tests passsing!

.dockerignore

@@ -1 +1 @@
-bin/*
+bin

.github/FUNDING.yml

@@ -1 +0,0 @@
-github: mikefarah

.github/ISSUE_TEMPLATE/bug_report_v3.md

@@ -10,8 +10,6 @@ assignees: ''
 **Describe the bug**
 A clear and concise description of what the bug is.
 
-Note that any how to questions should be posted in the discussion board and not raised as an issue.
-
 Version of yq: 3.X.X
 Operating system: mac/linux/windows/....
 Installed via: docker/binary release/homebrew/snap/...

.github/ISSUE_TEMPLATE/bug_report_v4.md

@@ -10,8 +10,6 @@ assignees: ''
 **Describe the bug**
 A clear and concise description of what the bug is.
 
-Note that any how to questions should be posted in the discussion board and not raised as an issue.
-
 Version of yq: 4.X.X
 Operating system: mac/linux/windows/....
 Installed via: docker/binary release/homebrew/snap/...

.github/ISSUE_TEMPLATE/feature_request.md

@@ -9,11 +9,9 @@ assignees: ''
 
 **Please describe your feature request.**
 A clear and concise description of what the request is and what it would solve. 
-Eg. I wish I could use yq to [...]
+Ex. I wish I could use yq to [...]
 
-Note:
-- how to questions should be posted in the discussion board and not raised as an issue.
-- V3 will no longer have any enhancements.
+Please note that V3 will no longer have any enhancements.
 
 **Describe the solution you'd like**
 If we have data1.yml like:
@@ -26,7 +24,7 @@ country: Australia
 And we run a command:
 
 ```bash
-yq 'predictWeatherOf(.country)'
+yq eval 'predictWeatherOf(.country)'
 ```
 
 it could output

.github/dependabot.yml

@@ -1,22 +0,0 @@
-# To get started with Dependabot version updates, you'll need to specify which
-# package ecosystems to update and where the package manifests are located.
-# Please see the documentation for all configuration options:
-# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
-
-version: 2
-updates:
-  - package-ecosystem: docker
-    directory: /
-    schedule:
-      day: thursday
-      interval: weekly
-  - package-ecosystem: github-actions
-    directory: /
-    schedule:
-      day: thursday
-      interval: weekly
-  - package-ecosystem: gomod
-    directory: /
-    schedule:
-      day: thursday
-      interval: weekly

.github/workflows/codeql.yml

@@ -1,70 +0,0 @@
-# For most projects, this workflow file will not need changing; you simply need
-# to commit it to your repository.
-#
-# You may wish to alter this file to override the set of languages analyzed,
-# or to provide custom queries or build logic.
-#
-# ******** NOTE ********
-# We have attempted to detect the languages in your repository. Please check
-# the `language` matrix defined below to confirm you have the correct set of
-# supported CodeQL languages.
-#
-name: "CodeQL"
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    # The branches below must be a subset of the branches above
-    branches: [ master ]
-  schedule:
-    - cron: '24 3 * * 1'
-
-jobs:
-  analyze:
-    name: Analyze
-    runs-on: ubuntu-latest
-    permissions:
-      actions: read
-      contents: read
-      security-events: write
-
-    strategy:
-      fail-fast: false
-      matrix:
-        language: [ 'go' ]
-        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
-        # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
-
-    steps:
-    - name: Checkout repository
-      uses: actions/checkout@v3
-
-    # Initializes the CodeQL tools for scanning.
-    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
-      with:
-        languages: ${{ matrix.language }}
-        # If you wish to specify custom queries, you can do so here or in a config file.
-        # By default, queries listed here will override any specified in a config file.
-        # Prefix the list here with "+" to use these queries and those in the config file.
-        # queries: ./path/to/local/query, your-org/your-repo/queries@main
-
-    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
-    # If this step fails, then you should remove it and run the build manually (see below)
-    - name: Autobuild
-      uses: github/codeql-action/autobuild@v2
-
-    # ℹ️ Command-line programs to run using the OS shell.
-    # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
-
-    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
-    #    and modify them (or add more) to build your code if your project
-    #    uses a compiled language
-
-    #- run: |
-    #   make bootstrap
-    #   make release
-
-    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2

.github/workflows/docker-release.yml

@@ -1,62 +0,0 @@
-name: Release Docker
-
-on:
-  release:
-    types: [released]
-
-  # Allows you to run this workflow manually from the Actions tab
-  workflow_dispatch:
-
-jobs:
-  publishDocker:
-    environment: dockerhub
-    env:
-      IMAGE_NAME: mikefarah/yq
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
-        with:
-          platforms: all
-
-      - name: Set up Docker Buildx
-        id: buildx
-        uses: docker/setup-buildx-action@v2
-        with:
-          version: latest
-
-      - name: Available platforms
-        run: echo ${{ steps.buildx.outputs.platforms }} && docker version
-
-      - name: Build and push image
-        run: |
-          echo "GithubRef: ${GITHUB_REF}"
-          VERSION=${GITHUB_REF##*/}
-          echo "VERSION: ${VERSION}"
-          IMAGE_VERSION=${VERSION:1}
-          echo "IMAGE_VERSION: ${IMAGE_VERSION}"
-
-          PLATFORMS="linux/amd64,linux/ppc64le,linux/arm64"
-
-          echo "Building and pushing version ${IMAGE_VERSION} of image ${IMAGE_NAME}"
-          echo '${{ secrets.DOCKER_PASSWORD }}' | docker login -u '${{ secrets.DOCKER_USERNAME }}' --password-stdin
-          docker buildx build \
-            --label "org.opencontainers.image.authors=https://github.com/mikefarah/yq/graphs/contributors" \
-            --label "org.opencontainers.image.created=$(date --rfc-3339=seconds)" \
-            --label "org.opencontainers.image.description=yq is a portable command-line YAML processor" \
-            --label "org.opencontainers.image.documentation=https://mikefarah.gitbook.io/yq/" \
-            --label "org.opencontainers.image.licenses=MIT" \
-            --label "org.opencontainers.image.revision=$(git rev-parse HEAD)" \
-            --label "org.opencontainers.image.source=https://github.com/mikefarah/yq" \
-            --label "org.opencontainers.image.title=yq" \
-            --label "org.opencontainers.image.url=https://mikefarah.gitbook.io/yq/" \
-            --label "org.opencontainers.image.version=${IMAGE_VERSION}" \
-            --platform "${PLATFORMS}" \
-            --pull \
-            --push \
-            -t "${IMAGE_NAME}:${IMAGE_VERSION}" \
-            -t "${IMAGE_NAME}:4" \
-            -t "${IMAGE_NAME}:latest" \
-            .

.github/workflows/go.yml

@@ -1,8 +1,5 @@
 name: Build
-on: [push, pull_request]
-permissions:
-  contents: read
-
+on: [push]
 jobs:
 
   build:
@@ -10,14 +7,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-    - name: Set up Go 1.18
-      uses: actions/setup-go@v3
+    - name: Set up Go 1.15
+      uses: actions/setup-go@v1
       with:
-        go-version: 1.18
+        go-version: 1.15
       id: go
 
     - name: Check out code into the Go module directory
-      uses: actions/checkout@v3
+      uses: actions/checkout@v2
 
     - name: Get dependencies
       run: |
@@ -27,9 +24,8 @@ jobs:
             dep ensure
         fi
 
-    - name: Check the build
-      shell: bash -l {0}
+    - name: Download deps
       run: |
         export PATH=${PATH}:`go env GOPATH`/bin
         scripts/devtools.sh
-        make local build
+        make local build

.github/workflows/release.yml

@@ -3,51 +3,76 @@ on:
   push:
     tags:
       - 'v*'
-      - 'draft-*'
 
 jobs:
   publishGitRelease:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-go@v3
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v2
         with:
-          go-version: '^1.18'
-      - name: Compile man page markup
-        id: gen-man-page-md
-        run: |
-          ./scripts/generate-man-page-md.sh
-          echo "::set-output name=man-page-md::man.md"
-
-      - name: Get the version
-        id: get_version
-        run: echo ::set-output name=VERSION::${GITHUB_REF##*/}
-
-      - name: Generate man page
-        uses: docker://pandoc/core:2.14.2
-        id: gen-man-page
-        with:
-          args: >-
-            --standalone
-            --to man
-            --variable=title:"YQ"
-            --variable=section:"1"
-            --variable=header:"yq (https://github.com/mikefarah/yq/) version ${{ steps.get_version.outputs.VERSION }}"
-            --variable=author:"Mike Farah"
-            --output=yq.1
-            ${{ steps.gen-man-page-md.outputs.man-page-md }}
-
+          go-version: '^1.15'
       - name: Cross compile
         run: |
           sudo apt-get install rhash -y
-          go install github.com/mitchellh/gox@v1.0.1
-          mkdir -p build
-          cp yq.1 build/yq.1
+          go get github.com/mitchellh/gox
           ./scripts/xcompile.sh
 
-      - name: Release
-        uses: softprops/action-gh-release@v1
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1.0.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
-          files: build/*
+          tag_name: ${{ github.ref }}
+          release_name: ${{ github.ref }}
           draft: true
-          fail_on_unmatched_files: true
+          prerelease: false
+
+      - uses: shogo82148/actions-upload-release-asset@v1
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: build/*
+
+  publishDocker:
+    environment: dockerhub
+    env:
+      IMAGE_NAME: mikefarah/yq
+    runs-on: ubuntu-latest
+    steps:
+      - name: Get latest release tag      
+        uses: oprypin/find-latest-tag@v1
+        with:
+          repository: mikefarah/yq  # The repository to scan.
+          releases-only: true  # We know that all relevant tags have a GitHub release for them.
+        id: yq  
+        
+      - name: Clone source code
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ steps.yq.outputs.tag }}
+      
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+        with:
+          platforms: all
+  
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v1
+        with:
+          version: latest
+
+      - name: Available platforms
+        run: echo ${{ steps.buildx.outputs.platforms }} && docker version
+ 
+      - name: Build and push image
+        run: |
+          IMAGE_VERSION="$(git describe --tags --abbrev=0)"
+          SHORT_SHA1=$(git rev-parse --short HEAD)
+          PLATFORMS="linux/amd64,linux/ppc64le,linux/arm64"
+          echo "Building and pushing version ${IMAGE_VERSION} of image ${IMAGE_NAME}"
+          echo ${{ secrets.DOCKER_PASSWORD }} | docker login -u ${{ secrets.DOCKER_USERNAME }} --password-stdin
+          docker buildx build --platform "${PLATFORMS}" -t "${IMAGE_NAME}:${IMAGE_VERSION}"  -t "${IMAGE_NAME}:latest" -t "${IMAGE_NAME}:4" \
+            --push .
+    

.github/workflows/test-yq.yml

@@ -1,22 +0,0 @@
-name: Test Yq Action
-on: [push]
-permissions:
-  contents: read
-
-jobs:
-
-  build:
-    name: Build
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v3
-      - name: Get test
-        uses: mikefarah/yq@master
-        with:
-          cmd: yq eval '.a' examples/sample.yaml
-      - name: Write inplace test
-        id: lookupSdkVersion
-        uses: mikefarah/yq@master
-        with:
-          cmd: yq eval -i '.b.c = 5' examples/sample.yaml

.gitignore

@@ -38,22 +38,3 @@ parts/
 prime/
 .snapcraft/
 yq*.snap
-
-test.yml
-test*.yml
-test*.yaml
-0.yml
-1.yml
-2.yml
-
-
-# man page
-man.md
-yq.1
-
-# debian pkg
-_build
-debian/files
-
-# intellij
-/.idea

.golangci.yml

@@ -1,40 +0,0 @@
-run:
-  timeout: 5m
-linters:
-  enable:
-    - asciicheck
-    - depguard
-    - errorlint
-    - gci
-    - gochecknoinits
-    - gofmt
-    - goimports
-    - gosec
-    - megacheck
-    - misspell
-    - nakedret
-    - nolintlint
-    - predeclared
-    - revive
-    - unconvert
-    - unparam
-linters-settings:
-  depguard:
-    list-type: blacklist
-    include-go-root: true
-    packages:
-      - io/ioutil
-    packages-with-error-message:
-      - io/ioutil: "The 'io/ioutil' package is deprecated. Use corresponding 'os' or 'io' functions instead."
-issues:
-  exclude-rules:
-  - linters:
-    - gosec
-    text:  "Implicit memory aliasing in for loop."
-    path: _test\.go
-  - linters:
-    - revive
-    text: "unexported-return"
-  - linters:
-    - revive
-    text: "var-naming"

CONTRIBUTING.md

@@ -1,5 +1,3 @@
-# Development
-
 1. Install (golang)[https://golang.org/]
 1. Run  `scripts/devtools.sh` to install the required devtools
 2. Run `make [local] vendor` to install the vendor dependencies
@@ -8,33 +6,3 @@
 4. Make the code changes.
 5. `make [local] test` to lint code and run tests
 6. Profit! ok no profit, but raise a PR and get kudos :)
-
-
-# Documentation
-
-The documentation is a bit of a mixed bag (sorry in advanced, I do plan on simplifying it...) - with some parts automatically generated and stiched together and some statically defined.
-
-Documentation is written in markdown, and is published in the 'gitbook' branch.
-
-The various operator documentation (e.g. 'strings') are generated from the 'master' branch, and have a statically defined header (e.g. `pkg/yqlib/doc/operators/headers/add.md`) and the bulk of the docs are generated from the unit tests e.g. `pkg/yqlib/operator_add_test.go`.
-
-The pipeline will run the tests and automatically concatenate the files together, and put them under 
-`pkg/qylib/doc/add.md`. These files are checked in the master branch (and are copied to the gitbook branch as part of the release process).
-
-## How to contribute
-
-The first step is to find if what you want is automatically generated or not - start by looking in the master branch. 
-
-### Updating dynamic documentation from master
-- Search for the documentation you want to update. If you find matches in a `*_test.go` file - update that, as that will automatically update the matching `*.md` file 
-- Assuming you are updating a `*_test.go` file, once updated, run the test to regenerated the docs. E.g. for the 'Add' test generated docs, from the pkg/yqlib folder run:
-`go test -run TestAddOperatorScenarios` which will run that test defined in the `operator_add_test.go` file.
-- Ensure the tests still pass, and check the generated documentation have your update.
-- Note: If the documentation is only in a `headers/*.md` file, then just update that directly
-- Raise a PR to merge the changes into master!
-
-### Updating static documentation from the gitbook branch
-If you haven't found what you want to update in the master branch, then check the gitbook branch directly as there are a few pages in there that are not in master.
-
-- Update the `*.md` files
-- Raise a PR to merge the changes into gitbook.

Dockerfile

@@ -1,28 +1,25 @@
-FROM golang:1.18.4 as builder
+FROM golang:1.15 as builder
 
 WORKDIR /go/src/mikefarah/yq
 
-COPY . .
+# cache devtools
+COPY ./scripts/devtools.sh /go/src/mikefarah/yq/scripts/devtools.sh
+RUN ./scripts/devtools.sh
 
-RUN CGO_ENABLED=0 go build .
-# RUN ./scripts/test.sh -- this too often times out in the github pipeline.
-RUN ./scripts/acceptance.sh
+COPY . /go/src/mikefarah/yq
+
+RUN CGO_ENABLED=0 make local build
 
 # Choose alpine as a base image to make this useful for CI, as many
 # CI tools expect an interactive shell inside the container
-FROM alpine:3 as production
-LABEL maintainer="Mike Farah <mikefarah@users.noreply.github.com>"
+FROM alpine:3.12.3 as production
 
 COPY --from=builder /go/src/mikefarah/yq/yq /usr/bin/yq
+RUN chmod +x /usr/bin/yq
+
+ARG VERSION=none
+LABEL version=${VERSION}
 
 WORKDIR /workdir
 
-RUN set -eux; \
-  addgroup -g 1000 yq; \
-  adduser -u 1000 -G yq -s /bin/sh -h /home/yq -D yq
-
-RUN chown -R yq:yq /workdir
-
-USER yq
-
 ENTRYPOINT ["/usr/bin/yq"]

Dockerfile.dev

@@ -1,10 +1,30 @@
-FROM golang:1.18.4
+FROM golang:1.15
 
 COPY scripts/devtools.sh /opt/devtools.sh
 
 RUN set -e -x \
     && /opt/devtools.sh
-ENV PATH=/go/bin:$PATH
+
+# install mkdocs
+RUN set -ex \
+    && buildDeps=' \
+        build-essential \
+        python3-dev \
+    ' \
+    && apt-get update && apt-get install -y --no-install-recommends \
+        $buildDeps \
+        python3 \
+        python3-setuptools \
+        python3-wheel \
+        python3-pip \
+    && pip3 install --upgrade \
+        pip \
+        'Markdown>=2.6.9' \
+        'mkdocs>=0.16.3' \
+        'mkdocs-material>=1.10.1' \
+        'markdown-include>=0.5.1' \
+    && apt-get purge -y --auto-remove $buildDeps \
+    && rm -rf /var/lib/apt/lists/*
 
 ENV CGO_ENABLED 0
 ENV GOPATH /go:/yq

LICENSE

@@ -1,5 +1,3 @@
-The MIT License (MIT)
-
 Copyright (c) 2017 Mike Farah
 
 Permission is hereby granted, free of charge, to any person obtaining a copy

Makefile

@@ -2,7 +2,6 @@ MAKEFLAGS += --warn-undefined-variables
 SHELL := /bin/bash
 .SHELLFLAGS := -o pipefail -euc
 .DEFAULT_GOAL := install
-ENGINE := $(shell { command -v podman || command -v docker; } 2>/dev/null)
 
 include Makefile.variables
 
@@ -18,7 +17,6 @@ help:
 	@echo '    make vendor          Install dependencies to vendor directory.'
 	@echo '    make format          Run code formatter.'
 	@echo '    make check           Run static code analysis (lint).'
-	@echo '    make secure          Run gosec.'
 	@echo '    make test            Run tests on project.'
 	@echo '    make cover           Run tests and capture code coverage metrics on project.'
 	@echo '    make clean           Clean the directory tree of produced artifacts.'
@@ -34,7 +32,7 @@ clean:
 
 ## prefix before other make targets to run in your local dev environment
 local: | quiet
-	@$(eval ENGINERUN= )
+	@$(eval DOCKRUN= )
 	@mkdir -p tmp
 	@touch tmp/dev_image_id
 quiet: # this is silly but shuts up 'Nothing to be done for `local`'
@@ -43,9 +41,9 @@ quiet: # this is silly but shuts up 'Nothing to be done for `local`'
 prepare: tmp/dev_image_id
 tmp/dev_image_id: Dockerfile.dev scripts/devtools.sh
 	@mkdir -p tmp
-	@${ENGINE} rmi -f ${DEV_IMAGE} > /dev/null 2>&1 || true
-	@${ENGINE} build -t ${DEV_IMAGE} -f Dockerfile.dev .
-	@${ENGINE} inspect -f "{{ .ID }}" ${DEV_IMAGE} > tmp/dev_image_id
+	@docker rmi -f ${DEV_IMAGE} > /dev/null 2>&1 || true
+	@docker build -t ${DEV_IMAGE} -f Dockerfile.dev .
+	@docker inspect -f "{{ .ID }}" ${DEV_IMAGE} > tmp/dev_image_id
 
 # ----------------------------------------------
 # build
@@ -55,61 +53,58 @@ build: build/dev
 .PHONY: build/dev
 build/dev: test *.go
 	@mkdir -p bin/
-	${ENGINERUN} go build --ldflags "$(LDFLAGS)"
-	${ENGINERUN} bash ./scripts/acceptance.sh
+	${DOCKRUN} go build --ldflags "$(LDFLAGS)"
+	${DOCKRUN} bash ./scripts/acceptance.sh
 
 ## Compile the project for multiple OS and Architectures.
 xcompile: check
 	@rm -rf build/
 	@mkdir -p build
-	${ENGINERUN} bash ./scripts/xcompile.sh
+	${DOCKRUN} bash ./scripts/xcompile.sh
 	@find build -type d -exec chmod 755 {} \; || :
 	@find build -type f -exec chmod 755 {} \; || :
 
 .PHONY: install
 install: build
-	${ENGINERUN} go install
+	${DOCKRUN} go install
 
 # Each of the fetch should be an entry within vendor.json; not currently included within project
 .PHONY: vendor
 vendor: tmp/dev_image_id
-	@mkdir -p vendor
-	${ENGINERUN} go mod vendor
+	${DOCKRUN} go mod vendor
 
 # ----------------------------------------------
 # develop and test
 
 .PHONY: format
 format: vendor
-	${ENGINERUN} bash ./scripts/format.sh
-
-
-.PHONY: secure
-secure: format
-	${ENGINERUN} bash ./scripts/secure.sh
+	${DOCKRUN} bash ./scripts/format.sh
 
 .PHONY: check
-check: secure
-	${ENGINERUN} bash ./scripts/check.sh
-
-
+check: format
+	${DOCKRUN} bash ./scripts/check.sh
 
 .PHONY: test
 test: check
-	${ENGINERUN} bash ./scripts/test.sh
+	${DOCKRUN} bash ./scripts/test.sh
 
 .PHONY: cover
 cover: check
 	@rm -rf cover/
 	@mkdir -p cover
-	${ENGINERUN} bash ./scripts/coverage.sh
+	${DOCKRUN} bash ./scripts/coverage.sh
 	@find cover -type d -exec chmod 755 {} \; || :
 	@find cover -type f -exec chmod 644 {} \; || :
 
+.PHONY: build-docs
+build-docs: prepare mkdocs.yml mkdocs/*
+	${DOCKRUN} mkdocs build
+	@find docs -type d -exec chmod 755 {} \; || :
+	@find docs -type f -exec chmod 644 {} \; || :
 
 .PHONY: release
 release: xcompile
-	${ENGINERUN} bash ./scripts/publish.sh
+	${DOCKRUN} bash ./scripts/publish.sh
 
 # ----------------------------------------------
 # utilities

Makefile.variables

@@ -29,7 +29,7 @@ endif
 
 DEV_IMAGE := ${PROJECT}_dev
 
-ENGINERUN := ${ENGINE} run --rm \
+DOCKRUN := docker run --rm \
 	-e LDFLAGS="${LDFLAGS}" \
 	-e GITHUB_TOKEN="${GITHUB_TOKEN}" \
 	-v ${ROOT}/vendor:/go/src \

README.md

@@ -1,107 +1,28 @@
 # yq
 
-![Build](https://github.com/mikefarah/yq/workflows/Build/badge.svg)  ![Docker Pulls](https://img.shields.io/docker/pulls/mikefarah/yq.svg) ![Github Releases (by Release)](https://img.shields.io/github/downloads/mikefarah/yq/total.svg) ![Go Report](https://goreportcard.com/badge/github.com/mikefarah/yq) ![CodeQL](https://github.com/mikefarah/yq/workflows/CodeQL/badge.svg)
+![Build](https://github.com/mikefarah/yq/workflows/Build/badge.svg)  ![Docker Pulls](https://img.shields.io/docker/pulls/mikefarah/yq.svg) ![Github Releases (by Release)](https://img.shields.io/github/downloads/mikefarah/yq/total.svg) ![Go Report](https://goreportcard.com/badge/github.com/mikefarah/yq)
 
 
-a lightweight and portable command-line YAML, JSON and XML processor. `yq` uses [jq](https://github.com/stedolan/jq) like syntax but works with yaml files as well as json and xml. It doesn't yet support everything `jq` does - but it does support the most common operations and functions, and more is being added continuously.
+a lightweight and portable command-line YAML processor
 
-yq is written in go - so you can download a dependency free binary for your platform and you are good to go! If you prefer there are a variety of package managers that can be used as well as Docker and Podman, all listed below.
+The aim of the project is to be the [jq](https://github.com/stedolan/jq) or sed of yaml files.
 
-## Notice for v4.x versions prior to 4.18.1
-Since 4.18.1, yq's 'eval/e' command is the _default_ command and no longer needs to be specified.
+## V4 released!
+V4 is now officially released, it's quite different from V3 (sorry for the migration), however it is much more similar to ```jq```, using a similar expression syntax and therefore support much more complex functionality! 
 
-Older versions will still need to specify 'eval/e'.
-
-Similarly, '-' is no longer required as a filename to read from STDIN (unless reading from one or more files).
-
-TLDR:
-
-Prior to 4.18.1 
-```bash
-yq e '.cool' - < file.yaml
-```
-
-4.18+ 
-```bash
-yq '.cool' < file.yaml
-```
-
-When merging multiple files together, `eval-all/ea` is still required to tell `yq` to run the expression against all the document at once.
-
-## Quick Usage Guide
-
-Read a value:
-```bash
-yq '.a.b[0].c' file.yaml
-```
-
-Pipe from STDIN:
-```bash
-yq '.a.b[0].c' < file.yaml
-```
-
-Update a yaml file, inplace
-```bash
-yq -i '.a.b[0].c = "cool"' file.yaml
-```
-
-Update using environment variables
-```bash
-NAME=mike yq -i '.a.b[0].c = strenv(NAME)' file.yaml
-```
-
-Merge multiple files
-```bash
-# note the use of `ea` to evaluate all the files at once
-# instead of in sequence
-yq ea '. as $item ireduce ({}; . * $item )' path/to/*.yml
-```
-
-Multiple updates to a yaml file
-```bash
-yq -i '
-  .a.b[0].c = "cool" |
-  .x.y.z = "foobar" |
-  .person.name = strenv(NAME)
-' file.yaml
-```
-
-Convert JSON to YAML
-```bash
-yq -P sample.json
-```
-
-See the [documentation](https://mikefarah.gitbook.io/yq/) for more examples.
+If you've been using v3 and want/need to upgrade, checkout the [upgrade guide](https://mikefarah.gitbook.io/yq/v/v4.x/upgrading-from-v3).
 
 ## Install
 
 ### [Download the latest binary](https://github.com/mikefarah/yq/releases/latest)
 
-### wget
-Use wget to download the pre-compiled binaries:
-
-#### Compressed via tar.gz
-```bash
-wget https://github.com/mikefarah/yq/releases/download/${VERSION}/${BINARY}.tar.gz -O - |\
-  tar xz && mv ${BINARY} /usr/bin/yq
-```
-
-#### Plain binary
-
-```bash
-wget https://github.com/mikefarah/yq/releases/download/${VERSION}/${BINARY} -O /usr/bin/yq &&\
-    chmod +x /usr/bin/yq
-```
-
-For instance, VERSION=v4.2.0 and BINARY=yq_linux_amd64
-
-### MacOS / Linux via Homebrew:
+### MacOS:
 Using [Homebrew](https://brew.sh/)
 ```
 brew install yq
 ```
 
-### Linux via snap:
+### Ubuntu and other Linux distros supporting `snap` packages:
 ```
 snap install yq
 ```
@@ -110,54 +31,43 @@ snap install yq
 `yq` installs with [_strict confinement_](https://docs.snapcraft.io/snap-confinement/6233) in snap, this means it doesn't have direct access to root files. To read root files you can:
 
 ```
-sudo cat /etc/myfile | yq '.a.path'
+sudo cat /etc/myfile | yq e '.a.path' - 
 ```
 
 And to write to a root file you can either use [sponge](https://linux.die.net/man/1/sponge):
 ```
-sudo cat /etc/myfile | yq '.a.path = "value"' | sudo sponge /etc/myfile
+sudo cat /etc/myfile | yq e '.a.path = "value"' - | sudo sponge /etc/myfile
 ```
 or write to a temporary file:
 ```
-sudo cat /etc/myfile | yq '.a.path = "value"' | sudo tee /etc/myfile.tmp
+sudo cat /etc/myfile | yq e '.a.path = "value"' | sudo tee /etc/myfile.tmp
 sudo mv /etc/myfile.tmp /etc/myfile
 rm /etc/myfile.tmp
 ```
 
-### Run with Docker or Podman
+### wget
+
+Use wget to download the pre-compiled binaries:
+
+```bash
+wget https://github.com/mikefarah/yq/releases/download/${VERSION}/${BINARY} -O /usr/bin/yq &&\
+    chmod +x /usr/bin/yq
+```
+
+For instance, VERSION=4.0.0 and BINARY=yq_linux_amd64
+
+### Run with Docker
+
 #### Oneshot use:
 
 ```bash
-docker run --rm -v "${PWD}":/workdir mikefarah/yq [command] [flags] [expression ]FILE...
-```
-
-Note that you can run `yq` in docker without network access and other privileges if you desire,
-namely `--security-opt=no-new-privileges --cap-drop all --network none`.
-
-```bash
-podman run --rm -v "${PWD}":/workdir mikefarah/yq [command] [flags] [expression ]FILE...
-```
-
-#### Pipe in via STDIN:
-
-You'll need to pass the `-i\--interactive` flag to docker:
-
-```bash
-docker run -i --rm mikefarah/yq '.this.thing' < myfile.yml
-```
-
-```bash
-podman run -i --rm mikefarah/yq '.this.thing' < myfile.yml
+docker run --rm -v "${PWD}":/workdir mikefarah/yq <command> [flags] [expression ]FILE...
 ```
 
 #### Run commands interactively:
 
 ```bash
-docker run --rm -it -v "${PWD}":/workdir --entrypoint sh mikefarah/yq
-```
-
-```bash
-podman run --rm -it -v "${PWD}":/workdir --entrypoint sh mikefarah/yq
+docker run --rm -it -v "${PWD}":/workdir mikefarah/yq sh
 ```
 
 It can be useful to have a bash function to avoid typing the whole docker command:
@@ -168,81 +78,16 @@ yq() {
 }
 ```
 
-```bash
-yq() {
-  podman run --rm -i -v "${PWD}":/workdir mikefarah/yq "$@"
-}
+### Go Get:
 ```
-#### Running as root:
-
-`yq`'s container image no longer runs under root (https://github.com/mikefarah/yq/pull/860). If you'd like to install more things in the container image, or you're having permissions issues when attempting to read/write files you'll need to either:
-
-
-```
-docker run --user="root" -it --entrypoint sh mikefarah/yq
-```
-
-```
-podman run --user="root" -it --entrypoint sh mikefarah/yq
-```
-
-Or, in your Dockerfile:
-
-```
-FROM mikefarah/yq
-
-USER root
-RUN apk add --no-cache bash
-USER yq
-```
-
-#### Missing timezone data
-By default, the alpine image yq uses does not include timezone data. If you'd like to use the `tz` operator, you'll need to include this data:
-
-```
-FROM mikefarah/yq
-
-USER root
-RUN apk add --no-cache tzdata
-USER yq
-```
-
-### GitHub Action
-```
-  - name: Set foobar to cool
-    uses: mikefarah/yq@master
-    with:
-      cmd: yq -i '.foo.bar = "cool"' 'config.yml'
-```
-
-See https://mikefarah.gitbook.io/yq/usage/github-action for more.
-
-### Go Install:
-```
-go install github.com/mikefarah/yq/v4@latest
+GO111MODULE=on go get github.com/mikefarah/yq
 ```
 
 ## Community Supported Installation methods
 As these are supported by the community :heart: - however, they may be out of date with the officially supported releases.
 
-# Webi
-
-```
-webi yq
-```
-
-See [webi](https://webinstall.dev/)
-Supported by @adithyasunil26 (https://github.com/webinstall/webi-installers/tree/master/yq)
-
-### Arch Linux
-
-```
-pacman -S go-yq
-```
 
 ### Windows:
-[![Chocolatey](https://img.shields.io/chocolatey/v/yq.svg)](https://chocolatey.org/packages/yq)
-[![Chocolatey](https://img.shields.io/chocolatey/dt/yq.svg)](https://chocolatey.org/packages/yq)
 ```
 choco install yq
 ```
@@ -275,28 +120,19 @@ sudo apt install yq -y
 Supported by @rmescandon (https://launchpad.net/~rmescandon/+archive/ubuntu/yq)
 
 ## Features
-- [Detailed documentation with many examples](https://mikefarah.gitbook.io/yq/)
 - Written in portable go, so you can download a lovely dependency free binary
-- Uses similar syntax as `jq` but works with YAML, [JSON](https://mikefarah.gitbook.io/yq/usage/convert) and [XML](https://mikefarah.gitbook.io/yq/usage/xml) files
+- Uses similar syntax as `jq` but works with YAML and JSON files
 - Fully supports multi document yaml files
-- Supports yaml [front matter](https://mikefarah.gitbook.io/yq/usage/front-matter) blocks (e.g. jekyll/assemble)
 - Colorized yaml output
-- [Date/Time manipulation and formatting with TZ](https://mikefarah.gitbook.io/yq/operators/datetime)
-- [Deeply data structures](https://mikefarah.gitbook.io/yq/operators/traverse-read)
-- [Sort keys](https://mikefarah.gitbook.io/yq/operators/sort-keys)
-- Manipulate yaml [comments](https://mikefarah.gitbook.io/yq/operators/comment-operators), [styling](https://mikefarah.gitbook.io/yq/operators/style), [tags](https://mikefarah.gitbook.io/yq/operators/tag) and [anchors and aliases](https://mikefarah.gitbook.io/yq/operators/anchor-and-alias-operators).
-- [Update inplace](https://mikefarah.gitbook.io/yq/v/v4.x/commands/evaluate#flags)
-- [Complex expressions to select and update](https://mikefarah.gitbook.io/yq/operators/select#select-and-update-matching-values-in-map)
+- [Deeply traverse yaml](https://mikefarah.gitbook.io/yq/v/v4.x/traverse)
+- [Sort yaml by keys](https://mikefarah.gitbook.io/yq/v/v4.x/sort-keys)
+- Manipulate yaml [comments](https://mikefarah.gitbook.io/yq/comment-operators), [styling](https://mikefarah.gitbook.io/yq/style), [tags](https://mikefarah.gitbook.io/yq/tag) and [anchors and aliases](https://mikefarah.gitbook.io/yq/anchor-and-alias-operators).
+- [Update yaml inplace](https://mikefarah.gitbook.io/yq/v/v4.x/commands/evaluate#flags)
+- [Complex expressions to select and update](https://mikefarah.gitbook.io/yq/v/v4.x/select#select-and-update-matching-values-in-map)
 - Keeps yaml formatting and comments when updating (though there are issues with whitespace)
-- [Decode/Encode base64 data](https://mikefarah.gitbook.io/yq/operators/encode-decode)
-- [Load content from other files](https://mikefarah.gitbook.io/yq/operators/load)
-- [Convert to/from json](https://mikefarah.gitbook.io/yq/v/v4.x/usage/convert)
-- [Convert to/from xml](https://mikefarah.gitbook.io/yq/v/v4.x/usage/xml)
-- [Convert to/from properties](https://mikefarah.gitbook.io/yq/v/v4.x/usage/properties)
-- [Convert to csv/tsv](https://mikefarah.gitbook.io/yq/usage/csv-tsv)
+- [Convert to/from json to yaml](https://mikefarah.gitbook.io/yq/v/v4.x/usage/convert)
+- [Pipe data in by using '-'](https://mikefarah.gitbook.io/yq/v/v4.x/commands/evaluate)
 - [General shell completion scripts (bash/zsh/fish/powershell)](https://mikefarah.gitbook.io/yq/v/v4.x/commands/shell-completion)
-- [Reduce](https://mikefarah.gitbook.io/yq/operators/reduce) to merge multiple files or sum an array or other fancy things.
-- [Github Action](https://mikefarah.gitbook.io/yq/usage/github-action) to use in your automated pipeline (thanks @devorbitus)
 
 ## [Usage](https://mikefarah.gitbook.io/yq/)
 
@@ -307,46 +143,33 @@ Usage:
   yq [flags]
   yq [command]
 
-Examples:
-
-# yq defaults to 'eval' command if no command is specified. See "yq eval --help" for more examples.
-yq '.stuff' < myfile.yml # outputs the data at the "stuff" node from "myfile.yml"
-
-yq -i '.stuff = "foo"' myfile.yml # update myfile.yml inplace
-
-
 Available Commands:
-  completion       Generate the autocompletion script for the specified shell
-  eval             (default) Apply the expression to each document in each yaml file in sequence
+  eval             Apply expression to each document in each yaml file given in sequence
   eval-all         Loads _all_ yaml documents of _all_ yaml files and runs expression once
   help             Help about any command
   shell-completion Generate completion script
 
 Flags:
-  -C, --colors                        force print with colors
-  -e, --exit-status                   set exit status if there are no matches or null or false is returned
-  -f, --front-matter string           (extract|process) first input as yaml front-matter. Extract will pull out the yaml content, process will run the expression against the yaml content, leaving the remaining data intact
-      --header-preprocess             Slurp any header comments and separators before processing expression. (default true)
-  -h, --help                          help for yq
-  -I, --indent int                    sets indent level for output (default 2)
-  -i, --inplace                       update the file inplace of first file given.
-  -p, --input-format string           [yaml|y|xml|x] parse format for input. Note that json is a subset of yaml. (default "yaml")
-  -M, --no-colors                     force print with no colors
-  -N, --no-doc                        Don't print document separators (---)
-  -n, --null-input                    Don't read input, simply evaluate the expression given. Useful for creating docs from scratch.
-  -o, --output-format string          [yaml|y|json|j|props|p|xml|x] output format type. (default "yaml")
-  -P, --prettyPrint                   pretty print, shorthand for '... style = ""'
-  -s, --split-exp string              print each result (or doc) into a file named (exp). [exp] argument must return a string. You can use $index in the expression as the result counter.
-      --unwrapScalar                  unwrap scalar, print the value with no quotes, colors or comments (default true)
-  -v, --verbose                       verbose mode
-  -V, --version                       Print version information and quit
-      --xml-attribute-prefix string   prefix for xml attributes (default "+")
-      --xml-content-name string       name for xml content (if no attribute name is present). (default "+content")
+  -C, --colors        force print with colors
+  -e, --exit-status   set exit status if there are no matches or null or false is returned
+  -h, --help          help for yq
+  -I, --indent int    sets indent level for output (default 2)
+  -i, --inplace       update the yaml file inplace of first yaml file given.
+  -M, --no-colors     force print with no colors
+  -N, --no-doc        Don't print document separators (---)
+  -n, --null-input    Don't read input, simply evaluate the expression given. Useful for creating yaml docs from scratch.
+  -j, --tojson        output as json. Set indent to 0 to print json in one line.
+  -v, --verbose       verbose mode
+  -V, --version       Print version information and quit
 
 Use "yq [command] --help" for more information about a command.
 ```
+
+Simple Example:
+
+```bash
+yq e '.a.b | length' f1.yml f2.yml 
+```
+
 ## Known Issues / Missing Features
 - `yq` attempts to preserve comment positions and whitespace as much as possible, but it does not handle all scenarios (see https://github.com/go-yaml/yaml/tree/v3 for details)
-- Powershell has its own...[opinions on quoting yq](https://mikefarah.gitbook.io/yq/usage/tips-and-tricks#quotes-in-windows-powershell)
-
-See [tips and tricks](https://mikefarah.gitbook.io/yq/usage/tips-and-tricks) for more common problems and solutions.

acceptance_tests/bad_args.sh

@@ -1,41 +0,0 @@
-#!/bin/bash
-
-testWriteInPlacePipeIn() {
-  result=$(./yq e -i -n '.a' 2>&1)
-  assertEquals 1 $?
-  assertEquals "Error: write inplace flag only applicable when giving an expression and at least one file" "$result"
-}
-
-testWriteInPlacePipeInEvalall() {
-  result=$(./yq ea -i -n '.a' 2>&1)
-  assertEquals 1 $?
-  assertEquals "Error: write inplace flag only applicable when giving an expression and at least one file" "$result"
-}
-
-testWriteInPlaceWithSplit() {
-  result=$(./yq e -s "cat" -i '.a = "thing"' test.yml 2>&1)
-  assertEquals 1 $?
-  assertEquals "Error: write inplace cannot be used with split file" "$result"
-}
-
-testWriteInPlaceWithSplitEvalAll() {
-  result=$(./yq ea -s "cat" -i '.a = "thing"' test.yml 2>&1)
-  assertEquals 1 $?
-  assertEquals "Error: write inplace cannot be used with split file" "$result"
-}
-
-testNullWithFiles() {
-  result=$(./yq e -n '.a = "thing"' test.yml 2>&1)
-  assertEquals 1 $?
-  assertEquals "Error: cannot pass files in when using null-input flag" "$result"
-}
-
-testNullWithFilesEvalAll() {
-  result=$(./yq ea -n '.a = "thing"' test.yml 2>&1)
-  assertEquals 1 $?
-  assertEquals "Error: cannot pass files in when using null-input flag" "$result"
-}
-
-
-
-source ./scripts/shunit2

acceptance_tests/basic.sh

@@ -1,356 +0,0 @@
-#!/bin/bash
-
-setUp() {
-  rm test*.yml 2>/dev/null || true
-  rm .xyz 2>/dev/null || true
-  rm instructions.txt 2>/dev/null || true
-}
-
-testBasicEvalRoundTrip() {
-  ./yq -n ".a = 123" > test.yml
-  X=$(./yq '.a' test.yml)
-  assertEquals 123 "$X"
-}
-
-testBasicTrailingContent() {
-  cat >test-trailing.yml <<EOL
-test:
-# this comment will be removed
-EOL
-
-  read -r -d '' expected << EOM
-test:
-# this comment will be removed
-EOM
-  X=$(./yq test-trailing.yml -P)
-  assertEquals "$expected" "$X"
-}
-
-testBasicTrailingContent() {
-  cat >test-trailing.yml <<EOL
-test:
-# this comment will be removed
-EOL
-
-  read -r -d '' expected << EOM
-test:
-# hi
-EOM
-  X=$(./yq '. footComment = "hi"' test-trailing.yml)
-  assertEquals "$expected" "$X"
-}
-
-testBasicTrailingContentEvalAll() {
-  cat >test-trailing.yml <<EOL
-test:
-# this comment will be removed
-EOL
-
-  read -r -d '' expected << EOM
-test:
-# this comment will be removed
-EOM
-  X=$(./yq ea test-trailing.yml -P)
-  assertEquals "$expected" "$X"
-}
-
-testBasicTrailingContentEvalAll() {
-  cat >test-trailing.yml <<EOL
-test:
-# this comment will be removed
-EOL
-
-  read -r -d '' expected << EOM
-test:
-# hi
-EOM
-  X=$(./yq ea '. footComment = "hi"' test-trailing.yml)
-  assertEquals "$expected" "$X"
-}
-
-testBasicPipeWithDot() {
-  ./yq -n ".a = 123" > test.yml
-  X=$(cat test.yml | ./yq '.')
-  assertEquals "a: 123" "$X"
-}
-
-testBasicExpressionMatchesFileName() {
-  ./yq -n ".xyz = 123" > test.yml
-  touch .xyz
-  
-  X=$(./yq --expression '.xyz' test.yml)
-  assertEquals "123" "$X"
-
-  X=$(./yq ea --expression '.xyz' test.yml)
-  assertEquals "123" "$X"
-}
-
-testBasicExpressionFromFile() {
-  ./yq -n ".xyz = 123" > test.yml
-  echo '.xyz = "meow" | .cool = "frog"' > instructions.txt
-  
-  X=$(./yq --from-file instructions.txt test.yml -o=j -I=0)
-  assertEquals '{"xyz":"meow","cool":"frog"}' "$X"
-
-  X=$(./yq ea --from-file instructions.txt test.yml -o=j -I=0)
-  assertEquals '{"xyz":"meow","cool":"frog"}' "$X"
-}
-
-testBasicGitHubAction() {
-  ./yq -n ".a = 123" > test.yml
-  X=$(cat /dev/null | ./yq test.yml)
-  assertEquals "a: 123" "$X"
-
-  X=$(cat /dev/null | ./yq e test.yml)
-  assertEquals "a: 123" "$X"
-
-  X=$(cat /dev/null | ./yq ea test.yml)
-  assertEquals "a: 123" "$X"
-}
-
-testBasicGitHubActionWithExpression() {
-  ./yq -n ".a = 123" > test.yml
-  X=$(cat /dev/null | ./yq '.a' test.yml)
-  assertEquals "123" "$X"
-
-  X=$(cat /dev/null | ./yq e '.a' test.yml)
-  assertEquals "123" "$X"
-
-  X=$(cat /dev/null | ./yq ea '.a' test.yml)
-  assertEquals "123" "$X"
-}
-
-
-testBasicEvalAllAllFiles() {
-  ./yq -n ".a = 123" > test.yml
-  ./yq -n ".a = 124" > test2.yml
-  X=$(./yq ea test.yml test2.yml)
-  Y=$(./yq e '.' test.yml test2.yml)
-  assertEquals "$Y" "$X"
-}
-
-# when given a file, don't read STDIN
-# otherwise strange things start happening
-# in scripts
-# https://github.com/mikefarah/yq/issues/1115
-
-testBasicCatWithFilesNoDash() {
-  ./yq -n ".a = 123" > test.yml
-  ./yq -n ".a = 124" > test2.yml
-  X=$(cat test.yml | ./yq test2.yml)
-  Y=$(./yq e '.' test2.yml)
-  assertEquals "$Y" "$X"
-}
-
-# when the nullinput flag is used
-# dont automatically read STDIN (this breaks github actions)
-testBasicCreateFileGithubAction() {
-  cat /dev/null | ./yq -n ".a = 123" > test.yml
-}
-
-testBasicEvalAllCatWithFilesNoDash() {
-  ./yq -n ".a = 123" > test.yml
-  ./yq -n ".a = 124" > test2.yml
-  X=$(cat test.yml | ./yq ea test2.yml)
-  Y=$(./yq e '.' test2.yml)
-  assertEquals "$Y" "$X"
-}
-
-testBasicCatWithFilesNoDashWithExp() {
-  ./yq -n ".a = 123" > test.yml
-  ./yq -n ".a = 124" > test2.yml
-  X=$(cat test.yml | ./yq '.a' test2.yml)
-  Y=$(./yq e '.a' test2.yml)
-  assertEquals "$Y" "$X"
-}
-
-testBasicEvalAllCatWithFilesNoDashWithExp() {
-  ./yq -n ".a = 123" > test.yml
-  ./yq -n ".a = 124" > test2.yml
-  X=$(cat test.yml | ./yq ea '.a' test2.yml)
-  Y=$(./yq e '.a' test2.yml)
-  assertEquals "$Y" "$X"
-}
-
-
-testBasicStdInWithFiles() {
-  ./yq -n ".a = 123" > test.yml
-  ./yq -n ".a = 124" > test2.yml
-  X=$(cat test.yml | ./yq - test2.yml)
-  Y=$(./yq e '.' test.yml test2.yml)
-  assertEquals "$Y" "$X"
-}
-
-testBasicEvalAllStdInWithFiles() {
-  ./yq -n ".a = 123" > test.yml
-  ./yq -n ".a = 124" > test2.yml
-  X=$(cat test.yml | ./yq ea - test2.yml)
-  Y=$(./yq e '.' test.yml test2.yml)
-  assertEquals "$Y" "$X"
-}
-
-testBasicStdInWithFilesReverse() {
-  ./yq -n ".a = 123" > test.yml
-  ./yq -n ".a = 124" > test2.yml
-  X=$(cat test.yml | ./yq test2.yml -)
-  Y=$(./yq e '.' test2.yml test.yml)
-  assertEquals "$Y" "$X"
-}
-
-testBasicEvalAllStdInWithFilesReverse() {
-  ./yq -n ".a = 123" > test.yml
-  ./yq -n ".a = 124" > test2.yml
-  X=$(cat test.yml | ./yq ea test2.yml -)
-  Y=$(./yq e '.' test2.yml test.yml)
-  assertEquals "$Y" "$X"
-}
-
-testBasicEvalRoundTripNoEval() {
-  ./yq -n ".a = 123" > test.yml
-  X=$(./yq '.a' test.yml)
-  assertEquals 123 "$X"
-}
-
-testBasicStdInWithOneArg() {
-  ./yq e -n ".a = 123" > test.yml
-  X=$(cat test.yml | ./yq e ".a")
-  assertEquals 123 "$X"
-
-  X=$(cat test.yml | ./yq ea ".a")
-  assertEquals 123 "$X"
-
-  X=$(cat test.yml | ./yq ".a")
-  assertEquals 123 "$X"
-}
-
-testBasicUpdateInPlaceSequence() {
-  cat >test.yml <<EOL
-a: 0
-EOL
-  ./yq e -i ".a = 10" test.yml
-  X=$(./yq e '.a' test.yml)
-  assertEquals "10" "$X"
-}
-
-testBasicUpdateInPlaceSequenceNoEval() {
-  cat >test.yml <<EOL
-a: 0
-EOL
-  ./yq -i ".a = 10" test.yml
-  X=$(./yq '.a' test.yml)
-  assertEquals "10" "$X"
-}
-
-testBasicUpdateInPlaceSequenceEvalAll() {
-  cat >test.yml <<EOL
-a: 0
-EOL
-  ./yq ea -i ".a = 10" test.yml
-  X=$(./yq e '.a' test.yml)
-  assertEquals "10" "$X"
-}
-
-testBasicUpdateInPlaceMultipleFilesNoExpressionEval() {
-  cat >test.yml <<EOL
-a: 0
-EOL
-  cat >test2.yml <<EOL
-a: 1
-EOL
-read -r -d '' expected << EOM
-0
----
-1
-EOM
-  ./yq -i test.yml test2.yml
-  X=$(./yq e '.a' test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testBasicUpdateInPlaceMultipleFilesNoExpressionEvalAll() {
-  cat >test.yml <<EOL
-a: 0
-EOL
-  cat >test2.yml <<EOL
-a: 1
-EOL
-read -r -d '' expected << EOM
-0
----
-1
-EOM
-  ./yq -i ea test.yml test2.yml
-  X=$(./yq e '.a' test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testBasicNoExitStatus() {
-  echo "a: cat" > test.yml
-  X=$(./yq e '.z' test.yml)
-  assertEquals "null" "$X"
-}
-
-testBasicExitStatus() {
-  echo "a: cat" > test.yml
-  X=$(./yq e -e '.z' test.yml 2&>/dev/null)
-  assertEquals 1 "$?"
-}
-
-testBasicExitStatusNoEval() {
-  echo "a: cat" > test.yml
-  X=$(./yq -e '.z' test.yml 2&>/dev/null)
-  assertEquals 1 "$?"
-}
-
-testBasicExtractFieldWithSeperator() {
-    cat >test.yml <<EOL
----
-name: chart-name
-version: 1.2.3
-EOL
-  X=$(./yq e '.name' test.yml)
-  assertEquals "chart-name" "$X"
-}
-
-testBasicExtractMultipleFieldWithSeperator() {
-    cat >test.yml <<EOL
----
-name: chart-name
-version: 1.2.3
----
-name: thing
-version: 1.2.3
-EOL
-
-read -r -d '' expected << EOM
-chart-name
----
-thing
-EOM
-  X=$(./yq e '.name' test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testBasicMultiplyAssignMultiDoc() {
-      cat >test.yml <<EOL
-a: 1
----
-b: 2
-EOL
-
-read -r -d '' expected << EOM
-a: 1
-c: 3
----
-b: 2
-c: 3
-EOM
-
-
-  X=$(./yq '. *= {"c":3}' test.yml)
-  assertEquals "$expected" "$X"
-}
-
-
-
-source ./scripts/shunit2

acceptance_tests/completion.sh

@@ -1,9 +0,0 @@
-#!/bin/bash
-
-testCompletionRuns() {
-    result=$(./yq __complete "" 2>&1)
-    assertEquals 0 $?
-    assertContains "$result" "Completion ended with directive:"
-}
-
-source ./scripts/shunit2

acceptance_tests/empty.sh

@@ -1,83 +0,0 @@
-#!/bin/bash
-
-setUp() {
-  rm test*.yml || true
-  cat >test.yml <<EOL
-# comment
-EOL
-}
-
-testEmptyEval() {
-  X=$(./yq e test.yml)
-  expected=$(cat test.yml)
-  assertEquals 0 $?
-  assertEquals "$expected" "$X"
-}
-
-testEmptyEvalNoNewLine() {
-  echo -n "#comment" >test.yml
-  X=$(./yq e test.yml)
-  expected=$(cat test.yml)
-  assertEquals 0 $?
-  assertEquals "$expected" "$X"
-}
-
-testEmptyEvalNoNewLineWithExpression() {
-  echo -n "# comment" >test.yml
-  X=$(./yq e '.apple = "tree"' test.yml)
-  read -r -d '' expected << EOM
-# comment
-apple: tree
-EOM
-  assertEquals "$expected" "$X"
-}
-
-testEmptyEvalPipe() {
-  X=$(./yq e - < test.yml)
-  assertEquals 0 $?
-}
-
-testEmptyCommentsWithExpressionEval() {
-  read -r -d '' expected << EOM
-# comment
-apple: tree
-EOM
-
-  X=$(./yq e '.apple="tree"' test.yml)
-
-  assertEquals "$expected" "$X"
-}
-
-testEmptyCommentsWithExpressionEvalAll() {
-  read -r -d '' expected << EOM
-# comment
-apple: tree
-EOM
-
-  X=$(./yq ea '.apple="tree"' test.yml)
-
-  assertEquals "$expected" "$X"
-}
-
-testEmptyWithExpressionEval() {
-  rm test.yml
-  touch test.yml
-  expected="apple: tree"
-
-  X=$(./yq e '.apple="tree"' test.yml)
-
-  assertEquals "$expected" "$X"
-}
-
-testEmptyWithExpressionEvalAll() {
-  rm test.yml
-  touch test.yml
-  expected="apple: tree"
-
-  X=$(./yq ea '.apple="tree"' test.yml)
-
-  assertEquals "$expected" "$X"
-}
-
-
-source ./scripts/shunit2

acceptance_tests/front-matter.sh

@@ -1,76 +0,0 @@
-#!/bin/bash
-
-setUp() {
-  rm test*.yml || true
-  cat >test.yml <<EOL
----
-a: apple
-b: cat
----
-not yaml
-c: at
-EOL
-}
-
-testFrontMatterProcessEval() {
-  read -r -d '' expected << EOM
----
-a: apple
-b: dog
----
-not yaml
-c: at
-EOM
-  ./yq e --front-matter="process" '.b = "dog"' test.yml -i
-  assertEquals "$expected" "$(cat test.yml)"
-}
-
-testFrontMatterProcessEvalAll() {
-  read -r -d '' expected << EOM
----
-a: apple
-b: dog
----
-not yaml
-c: at
-EOM
-  ./yq ea --front-matter="process" '.b = "dog"' test.yml -i
-  assertEquals "$expected" "$(cat test.yml)"
-}
-
-testFrontMatterExtractEval() {
-    cat >test.yml <<EOL
-a: apple
-b: cat
----
-not yaml
-c: at
-EOL
-
-  read -r -d '' expected << EOM
-a: apple
-b: dog
-EOM
-  ./yq e --front-matter="extract" '.b = "dog"' test.yml -i
-  assertEquals "$expected" "$(cat test.yml)"
-}
-
-testFrontMatterExtractEvalAll() {
-  cat >test.yml <<EOL
-a: apple
-b: cat
----
-not yaml
-c: at
-EOL
-
-  read -r -d '' expected << EOM
-a: apple
-b: dog
-EOM
-  ./yq ea --front-matter="extract" '.b = "dog"' test.yml -i
-  assertEquals "$expected" "$(cat test.yml)"
-}
-
-
-source ./scripts/shunit2

acceptance_tests/inputs-format.sh

@@ -1,168 +0,0 @@
-#!/bin/bash
-
-setUp() {
-  rm test*.yml 2>/dev/null || true
-  rm test*.properties 2>/dev/null || true
-  rm test*.csv 2>/dev/null || true
-  rm test*.tsv 2>/dev/null || true
-  rm test*.xml 2>/dev/null || true
-}
-
-testInputProperties() {
-  cat >test.properties <<EOL
-mike.things = hello
-EOL
-
-  read -r -d '' expected << EOM
-mike:
-  things: hello
-EOM
-
-  X=$(./yq e -p=props test.properties)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea -p=props test.properties)
-  assertEquals "$expected" "$X"
-}
-
-testInputPropertiesGitHubAction() {
-  cat >test.properties <<EOL
-mike.things = hello
-EOL
-
-  read -r -d '' expected << EOM
-mike:
-  things: hello
-EOM
-
-  X=$(cat /dev/null | ./yq e -p=props test.properties)
-  assertEquals "$expected" "$X"
-
-  X=$(cat /dev/null | ./yq ea -p=props test.properties)
-  assertEquals "$expected" "$X"
-}
-
-testInputCSV() {
-  cat >test.csv <<EOL
-fruit,yumLevel
-apple,5
-banana,4
-EOL
-
-  read -r -d '' expected << EOM
-- fruit: apple
-  yumLevel: 5
-- fruit: banana
-  yumLevel: 4
-EOM
-
-  X=$(./yq e -p=csv test.csv)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea -p=csv test.csv)
-  assertEquals "$expected" "$X"
-}
-
-testInputTSV() {
-  cat >test.tsv <<EOL
-fruit	yumLevel
-apple	5
-banana	4
-EOL
-
-  read -r -d '' expected << EOM
-- fruit: apple
-  yumLevel: 5
-- fruit: banana
-  yumLevel: 4
-EOM
-
-  X=$(./yq e -p=t test.tsv)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea -p=t test.tsv)
-  assertEquals "$expected" "$X"
-}
-
-
-
-
-testInputXml() {
-  cat >test.yml <<EOL
-<cat legs="4">BiBi</cat>
-EOL
-
-  read -r -d '' expected << EOM
-cat:
-  +content: BiBi
-  +legs: "4"
-EOM
-
-  X=$(./yq e -p=xml test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea -p=xml test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testInputXmlNamespaces() {
-  cat >test.yml <<EOL
-<?xml version="1.0"?>
-<map xmlns="some-namespace" xmlns:xsi="some-instance" xsi:schemaLocation="some-url">
-</map>
-EOL
-
-  read -r -d '' expected << EOM
-map:
-  +xmlns: some-namespace
-  +xmlns:xsi: some-instance
-  +xsi:schemaLocation: some-url
-EOM
-
-  X=$(./yq e -p=xml test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea -p=xml test.yml)
-  assertEquals "$expected" "$X"
-}
-
-
-testInputXmlStrict() {
-  cat >test.yml <<EOL
-<?xml version="1.0"?>
-<!DOCTYPE root [
-<!ENTITY writer "Catherine.">
-<!ENTITY copyright "(r) Great">
-]>
-<root>
-    <item>&writer;&copyright;</item>
-</root>
-EOL
-
-  X=$(./yq -p=xml --xml-strict-mode test.yml 2>&1)
-  assertEquals 1 $?
-  assertEquals "Error: bad file 'test.yml': XML syntax error on line 7: invalid character entity &writer;" "$X"
-
-  X=$(./yq ea -p=xml --xml-strict-mode test.yml 2>&1)
-  assertEquals "Error: bad file 'test.yml': XML syntax error on line 7: invalid character entity &writer;" "$X"
-}
-
-testInputXmlGithubAction() {
-  cat >test.yml <<EOL
-<cat legs="4">BiBi</cat>
-EOL
-
-  read -r -d '' expected << EOM
-cat:
-  +content: BiBi
-  +legs: "4"
-EOM
-
-  X=$(cat /dev/null | ./yq e -p=xml test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(cat /dev/null | ./yq ea -p=xml test.yml)
-  assertEquals "$expected" "$X"
-}
-
-source ./scripts/shunit2

acceptance_tests/leading-seperator.sh

@@ -1,450 +0,0 @@
-#!/bin/bash
-
-setUp() {
-  rm test*.yml || true
-  cat >test.yml <<EOL
----
-a: test
-EOL
-}
-
-testLeadingSeperatorWithDoc() {
-  cat >test.yml <<EOL
-# hi peeps
-# cool
----
-a: test
----
-b: cool
-EOL
-
-  read -r -d '' expected << EOM
-# hi peeps
-# cool
----
-a: thing
----
-b: cool
-EOM
-
-  X=$(./yq e '(select(di == 0) | .a) = "thing"' - < test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorPipeIntoEvalSeq() {
-  X=$(./yq e - < test.yml)
-  expected=$(cat test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorExtractField() {
-  X=$(./yq e '.a' - < test.yml)
-  assertEquals "test" "$X"
-}
-
-testLeadingSeperatorExtractFieldWithCommentsAfterSep() {
-  cat >test.yml <<EOL
----
-# hi peeps
-# cool
-a: test
-EOL
-  X=$(./yq e '.a' test.yml)
-  assertEquals "test" "$X"
-}
-
-testLeadingSeperatorExtractFieldWithCommentsBeforeSep() {
-  cat >test.yml <<EOL
-# hi peeps
-# cool
----
-a: test
-EOL
-  X=$(./yq e '.a' test.yml)
-  assertEquals "test" "$X"
-}
-
-
-testLeadingSeperatorExtractFieldMultiDoc() {
-  cat >test.yml <<EOL
----
-a: test
----
-a: test2
-EOL
-
-  read -r -d '' expected << EOM
-test
----
-test2
-EOM
-  X=$(./yq e '.a' test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorExtractFieldMultiDocWithComments() {
-  cat >test.yml <<EOL
-# here
----
-# there
-a: test
-# whereever
----
-# you are
-a: test2
-# woop
-EOL
-
-  read -r -d '' expected << EOM
-test
----
-test2
-EOM
-  X=$(./yq e '.a' test.yml)
-  assertEquals "$expected" "$X"
-}
-
-
-testLeadingSeperatorEvalSeq() {
-  X=$(./yq e test.yml)
-  expected=$(cat test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorPipeIntoEvalAll() {
-  X=$(./yq ea - < test.yml)
-  expected=$(cat test.yml)
-  assertEquals "$expected" "$X"
-}
-
-
-testLeadingSeperatorEvalAll() {
-  X=$(./yq ea test.yml)
-  expected=$(cat test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorMultiDocEvalSimple() {
-  read -r -d '' expected << EOM
----
-a: test
----
-version: 3
-application: MyApp
-EOM
-
-
-  X=$(./yq e '.' test.yml examples/order.yaml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorMultiDocInOneFile() {
-  cat >test.yml <<EOL
----
-# hi peeps
-# cool
-a: test
----
-b: things
-EOL
-  expected=$(cat test.yml)
-  X=$(./yq e '.' test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorMultiDocInOneFileEvalAll() {
-  cat >test.yml <<EOL
----
-# hi peeps
-# cool
-a: test
----
-b: things
-EOL
-  expected=$(cat test.yml)
-  X=$(./yq ea '.' test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorMultiDocEvalComments() {
-  cat >test.yml <<EOL
-# hi peeps
-# cool
-a: test
-EOL
-
-cat >test2.yml <<EOL
-# this is another doc
-# great
-b: sane
-EOL
-
-  read -r -d '' expected << EOM
-# hi peeps
-# cool
-a: test
----
-# this is another doc
-# great
-b: sane
-EOM
-
-
-  X=$(./yq e '.' test.yml test2.yml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorMultiDocEvalCommentsTrailingSep() {
-  cat >test.yml <<EOL
-# hi peeps
-# cool
----
-a: test
-EOL
-
-cat >test2.yml <<EOL
-# this is another doc
-# great
----
-b: sane
-EOL
-
-  read -r -d '' expected << EOM
-# hi peeps
-# cool
----
-a: test
----
-# this is another doc
-# great
----
-b: sane
-EOM
-
-
-  X=$(./yq e '.' test.yml test2.yml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorMultiMultiDocEvalCommentsTrailingSep() {
-  cat >test.yml <<EOL
-# hi peeps
-# cool
----
-a: test
----
-a1: test2
-EOL
-
-cat >test2.yml <<EOL
-# this is another doc
-# great
----
-b: sane
----
-b2: cool
-EOL
-
-  read -r -d '' expected << EOM
-# hi peeps
-# cool
----
-a: test
----
-a1: test2
----
-# this is another doc
-# great
----
-b: sane
----
-b2: cool
-EOM
-
-
-  X=$(./yq e '.' test.yml test2.yml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorMultiDocEvalCommentsLeadingSep() {
-  cat >test.yml <<EOL
----
-# hi peeps
-# cool
-a: test
-EOL
-
-cat >test2.yml <<EOL
----
-# this is another doc
-# great
-b: sane
-EOL
-
-  read -r -d '' expected << EOM
----
-# hi peeps
-# cool
-a: test
----
-# this is another doc
-# great
-b: sane
-EOM
-
-
-  X=$(./yq e '.' test.yml test2.yml)
-  assertEquals "$expected" "$X"
-}
-
-# https://github.com/mikefarah/yq/issues/919
-testLeadingSeparatorDoesNotBreakCommentsOnOtherFiles() {
-  cat >test.yml <<EOL
-# a1
-a: 1
-# a2
-EOL
-
-cat >test2.yml <<EOL
-# b1
-b: 2
-# b2
-EOL
-
-  read -r -d '' expected << EOM
-# a1
-a: 1
-# a2
-
-# b1
-b: 2
-# b2
-EOM
-
-
-  X=$(./yq ea 'select(fi == 0) * select(fi == 1)' test.yml test2.yml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorMultiDocEvalCommentsStripComments() {
-  cat >test.yml <<EOL
----
-# hi peeps
-# cool
-a: test
----
-# this is another doc
-# great
-b: sane
-EOL
-
-  # it will be hard to remove that top level separator
-  read -r -d '' expected << EOM
-a: test
----
-b: sane
-EOM
-
-  X=$(./yq e '... comments=""'  test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorMultiDocEvalCommentsLeadingSepNoDocFlag() {
-  cat >test.yml <<EOL
----
-# hi peeps
-# cool
-a: test
----
-# this is another doc
-# great
-b: sane
-EOL
-
-  read -r -d '' expected << EOM
-# hi peeps
-# cool
-a: test
-# this is another doc
-# great
-b: sane
-EOM
-
-
-  X=$(./yq e '.' --no-doc test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorMultiDocEvalJsonFlag() {
-  cat >test.yml <<EOL
----
-# hi peeps
-# cool
-a: test
-EOL
-
-cat >test2.yml <<EOL
----
-# this is another doc
-# great
-b: sane
-EOL
-
-  read -r -d '' expected << EOM
-{
-  "a": "test"
-}
-{
-  "b": "sane"
-}
-EOM
-
-
-  X=$(./yq e '.' -j test.yml test2.yml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorMultiDocEvalAllJsonFlag() {
-  cat >test.yml <<EOL
----
-# hi peeps
-# cool
-a: test
-EOL
-
-cat >test2.yml <<EOL
----
-# this is another doc
-# great
-b: sane
-EOL
-
-  read -r -d '' expected << EOM
-{
-  "a": "test"
-}
-{
-  "b": "sane"
-}
-EOM
-
-
-  X=$(./yq ea '.' -j test.yml test2.yml)
-  assertEquals "$expected" "$X"
-}
-
-testLeadingSeperatorMultiDocEvalAll() {
-  read -r -d '' expected << EOM
----
-a: test
----
-version: 3
-application: MyApp
-EOM
-
-
-  X=$(./yq ea '.' test.yml examples/order.yaml)
-  assertEquals "$expected" "$X"
-}
-
-source ./scripts/shunit2

acceptance_tests/load-file.sh

@@ -1,27 +0,0 @@
-#!/bin/bash
-
-testLoadFileNotExist() {
-  result=$(./yq e -n 'load("cat.yml")' 2>&1)
-  assertEquals 1 $?
-  assertEquals "Error: Failed to load cat.yml: open cat.yml: no such file or directory" "$result"
-}
-
-testLoadFileExpNotExist() {
-  result=$(./yq e -n 'load(.a)' 2>&1)
-  assertEquals 1 $?
-  assertEquals "Error: Filename expression returned nil" "$result"
-}
-
-testStrLoadFileNotExist() {
-  result=$(./yq e -n 'strload("cat.yml")' 2>&1)
-  assertEquals 1 $?
-  assertEquals "Error: Failed to load cat.yml: open cat.yml: no such file or directory" "$result"
-}
-
-testStrLoadFileExpNotExist() {
-  result=$(./yq e -n 'strload(.a)' 2>&1)
-  assertEquals 1 $?
-  assertEquals "Error: Filename expression returned nil" "$result"
-}
-
-source ./scripts/shunit2

acceptance_tests/output-format.sh

@@ -1,208 +0,0 @@
-#!/bin/bash
-
-setUp() {
-  rm test*.yml || true
-}
-
-testOutputJsonDeprecated() {
-  cat >test.yml <<EOL
-a: {b: ["cat"]}
-EOL
-
-  read -r -d '' expected << EOM
-{
-  "a": {
-    "b": [
-      "cat"
-    ]
-  }
-}
-EOM
-
-  X=$(./yq e -j test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea -j test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testOutputJson() {
-  cat >test.yml <<EOL
-a: {b: ["cat"]}
-EOL
-
-  read -r -d '' expected << EOM
-{
-  "a": {
-    "b": [
-      "cat"
-    ]
-  }
-}
-EOM
-
-  X=$(./yq e --output-format=json test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea --output-format=json test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testOutputJsonShort() {
-  cat >test.yml <<EOL
-a: {b: ["cat"]}
-EOL
-
-  read -r -d '' expected << EOM
-{
-  "a": {
-    "b": [
-      "cat"
-    ]
-  }
-}
-EOM
-
-  X=$(./yq e -o=j test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea -o=j test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testOutputProperties() {
-  cat >test.yml <<EOL
-a: {b: {c: ["cat"]}}
-EOL
-
-  read -r -d '' expected << EOM
-a.b.c.0 = cat
-EOM
-
-  X=$(./yq e --output-format=props test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea --output-format=props test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testOutputPropertiesShort() {
-  cat >test.yml <<EOL
-a: {b: {c: ["cat"]}}
-EOL
-
-  read -r -d '' expected << EOM
-a.b.c.0 = cat
-EOM
-
-  X=$(./yq e -o=p test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea -o=p test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testOutputCSV() {
-  cat >test.yml <<EOL
-- fruit: apple
-  yumLevel: 5
-- fruit: banana
-  yumLevel: 4
-EOL
-
-  read -r -d '' expected << EOM
-fruit,yumLevel
-apple,5
-banana,4
-EOM
-
-  X=$(./yq -o=c test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea -o=csv test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testOutputTSV() {
-  cat >test.yml <<EOL
-- fruit: apple
-  yumLevel: 5
-- fruit: banana
-  yumLevel: 4
-EOL
-
-  read -r -d '' expected << EOM
-fruit	yumLevel
-apple	5
-banana	4
-EOM
-
-  X=$(./yq -o=t test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea -o=tsv test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testOutputXml() {
-  cat >test.yml <<EOL
-a: {b: {c: ["cat"]}}
-EOL
-
-  read -r -d '' expected << EOM
-<a>
-  <b>
-    <c>cat</c>
-  </b>
-</a>
-EOM
-
-  X=$(./yq e --output-format=xml test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea --output-format=xml test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testOutputXmlShort() {
-  cat >test.yml <<EOL
-a: {b: {c: ["cat"]}}
-EOL
-
-  read -r -d '' expected << EOM
-<a>
-  <b>
-    <c>cat</c>
-  </b>
-</a>
-EOM
-
-  X=$(./yq e --output-format=x test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea --output-format=x test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testOutputXmComplex() {
-  cat >test.yml <<EOL
-a: {b: {c: ["cat", "dog"], +f: meow}}
-EOL
-
-  read -r -d '' expected << EOM
-<a>
-  <b f="meow">
-    <c>cat</c>
-    <c>dog</c>
-  </b>
-</a>
-EOM
-
-  X=$(./yq e --output-format=x test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea --output-format=x test.yml)
-  assertEquals "$expected" "$X"
-}
-
-source ./scripts/shunit2

acceptance_tests/pipe.sh

@@ -1,70 +0,0 @@
-#!/bin/bash
-
-setUp() {
-  rm test*.yml || true
-  cat >test.yml <<EOL
-a: frog
-EOL
-}
-
-testPipeViaCatWithParam() {
-  X=$(cat test.yml | ./yq '.a')
-  assertEquals "frog" "$X"
-}
-
-testPipeViaCatWithParamEval() {
-  X=$(cat test.yml | ./yq e '.a')
-  assertEquals "frog" "$X"
-}
-
-testPipeViaCatWithParamEvalAll() {
-  X=$(cat test.yml | ./yq ea '.a')
-  assertEquals "frog" "$X"
-}
-
-testPipeViaCatNoParam() {
-  X=$(cat test.yml | ./yq)
-  assertEquals "a: frog" "$X"
-}
-
-testPipeViaCatNoParamEval() {
-  X=$(cat test.yml | ./yq e)
-  assertEquals "a: frog" "$X"
-}
-
-testPipeViaCatNoParamEvalAll() {
-  X=$(cat test.yml | ./yq ea)
-  assertEquals "a: frog" "$X"
-}
-
-testPipeViaFileishWithParam() {
-  X=$(./yq '.a' < test.yml)
-  assertEquals "frog" "$X"
-}
-
-testPipeViaFileishWithParamEval() {
-  X=$(./yq e '.a' < test.yml)
-  assertEquals "frog" "$X"
-}
-
-testPipeViaFileishWithParamEvalAll() {
-  X=$(./yq ea '.a' < test.yml)
-  assertEquals "frog" "$X"
-}
-
-testPipeViaFileishNoParam() {
-  X=$(./yq < test.yml)
-  assertEquals "a: frog" "$X"
-}
-
-testPipeViaFileishNoParamEval() {
-  X=$(./yq e < test.yml)
-  assertEquals "a: frog" "$X"
-}
-
-testPipeViaFileishNoParamEvalAll() {
-  X=$(./yq ea < test.yml)
-  assertEquals "a: frog" "$X"
-}
-
-source ./scripts/shunit2

acceptance_tests/pretty-print.sh

@@ -1,176 +0,0 @@
-#!/bin/bash
-
-setUp() {
-  rm test*.yml || true
-}
-
-testPrettyPrintWithBooleans() {
-  cat >test.yml <<EOL
-leaveUnquoted: [yes, no, on, off, y, n, true, false]
-leaveQuoted: ["yes", "no", "on", "off", "y", "n", "true", "false"]
-
-EOL
-
-  read -r -d '' expected << EOM
-leaveUnquoted:
-  - yes
-  - no
-  - on
-  - off
-  - y
-  - n
-  - true
-  - false
-leaveQuoted:
-  - "yes"
-  - "no"
-  - "on"
-  - "off"
-  - "y"
-  - "n"
-  - "true"
-  - "false"
-EOM
-
-  X=$(./yq e --prettyPrint test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea --prettyPrint test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testPrettyPrintWithBooleansCapitals() {
-  cat >test.yml <<EOL
-leaveUnquoted: [YES, NO, ON, OFF, Y, N, TRUE, FALSE]
-leaveQuoted: ["YES", "NO", "ON", "OFF", "Y", "N", "TRUE", "FALSE"]
-EOL
-
-  read -r -d '' expected << EOM
-leaveUnquoted:
-  - YES
-  - NO
-  - ON
-  - OFF
-  - Y
-  - N
-  - TRUE
-  - FALSE
-leaveQuoted:
-  - "YES"
-  - "NO"
-  - "ON"
-  - "OFF"
-  - "Y"
-  - "N"
-  - "TRUE"
-  - "FALSE"
-EOM
-
-  X=$(./yq e --prettyPrint test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea --prettyPrint test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testPrettyPrintOtherStringValues() {
-  cat >test.yml <<EOL
-leaveUnquoted: [yesSir, hellno, bonapite]
-makeUnquoted: ["yesSir", "hellno", "bonapite"]
-EOL
-
-  read -r -d '' expected << EOM
-leaveUnquoted:
-  - yesSir
-  - hellno
-  - bonapite
-makeUnquoted:
-  - yesSir
-  - hellno
-  - bonapite
-EOM
-
-  X=$(./yq e --prettyPrint test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea --prettyPrint test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testPrettyPrintKeys() {
-  cat >test.yml <<EOL
-"removeQuotes": "please"
-EOL
-
-  read -r -d '' expected << EOM
-removeQuotes: please
-EOM
-
-  X=$(./yq e --prettyPrint test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea --prettyPrint test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testPrettyPrintOtherStringValues() {
-  cat >test.yml <<EOL
-leaveUnquoted: [yesSir, hellno, bonapite]
-makeUnquoted: ["yesSir", "hellno", "bonapite"]
-EOL
-
-  read -r -d '' expected << EOM
-leaveUnquoted:
-  - yesSir
-  - hellno
-  - bonapite
-makeUnquoted:
-  - yesSir
-  - hellno
-  - bonapite
-EOM
-
-  X=$(./yq e --prettyPrint test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea --prettyPrint test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testPrettyPrintStringBlocks() {
-  cat >test.yml <<EOL
-"removeQuotes": | 
-  "please"
-EOL
-
-  read -r -d '' expected << EOM
-removeQuotes: |
-  "please"
-EOM
-
-  X=$(./yq e --prettyPrint test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea --prettyPrint test.yml)
-  assertEquals "$expected" "$X"
-}
-
-testPrettyPrintWithExpression() {
-  cat >test.yml <<EOL
-a: {b: {c: ["cat"]}}
-EOL
-
-  read -r -d '' expected << EOM
-b:
-  c:
-    - cat
-EOM
-
-  X=$(./yq e '.a' --prettyPrint test.yml)
-  assertEquals "$expected" "$X"
-
-  X=$(./yq ea '.a' --prettyPrint test.yml)
-  assertEquals "$expected" "$X"
-}
-
-source ./scripts/shunit2

acceptance_tests/split-printer.sh

@@ -1,207 +0,0 @@
-#!/bin/bash
-
-setUp() {
-  rm test*.yml || true
-}
-
-testBasicSplitWithName() {
-  cat >test.yml <<EOL
-a: test_doc1
---- 
-a: test_doc2
-EOL
-
-  ./yq e test.yml -s ".a"
-
-  doc1=$(cat test_doc1.yml)
-  
-  assertEquals "a: test_doc1" "$doc1"
-
-  doc2=$(cat test_doc2.yml)
-  read -r -d '' expectedDoc2 << EOM
----
-a: test_doc2
-EOM
-  assertEquals "$expectedDoc2" "$doc2"
-}
-
-testBasicSplitWithNameCustomExtension() {
-  rm test*.yaml || true
-  cat >test.yml <<EOL
-a: test_doc1
---- 
-a: test_doc2
-EOL
-
-  ./yq e test.yml -s '.a + ".yaml"'
-
-  doc1=$(cat test_doc1.yaml)
-  
-  assertEquals "a: test_doc1" "$doc1"
-
-  doc2=$(cat test_doc2.yaml)
-  read -r -d '' expectedDoc2 << EOM
----
-a: test_doc2
-EOM
-  assertEquals "$expectedDoc2" "$doc2"
-}
-
-
-
-
-testSplitFromFile() {
-  cat >test.yml <<EOL
-a: test_doc1
---- 
-a: test_doc2
-EOL
-
-cat >test_splitExp.yml <<EOL
-.a
-EOL
-
-  ./yq test.yml --split-exp-file test_splitExp.yml
-
-  doc1=$(cat test_doc1.yml)
-  
-  assertEquals "a: test_doc1" "$doc1"
-
-  doc2=$(cat test_doc2.yml)
-  read -r -d '' expectedDoc2 << EOM
----
-a: test_doc2
-EOM
-  assertEquals "$expectedDoc2" "$doc2"
-}
-
-testBasicSplitWithNameEvalAll() {
-  cat >test.yml <<EOL
-a: test_doc1
---- 
-a: test_doc2
-EOL
-
-  ./yq ea test.yml -s ".a"
-
-  doc1=$(cat test_doc1.yml)
-  
-  assertEquals "a: test_doc1" "$doc1"
-
-  doc2=$(cat test_doc2.yml)
-  read -r -d '' expectedDoc2 << EOM
----
-a: test_doc2
-EOM
-  assertEquals "$expectedDoc2" "$doc2"
-}
-
-testBasicSplitWithIndex() {
-  cat >test.yml <<EOL
-a: test_doc1
---- 
-a: test_doc2
-EOL
-
-  ./yq e test.yml -s '"test_" + $index'
-
-  doc1=$(cat test_0.yml)
-  
-  assertEquals "a: test_doc1" "$doc1"
-
-  doc2=$(cat test_1.yml)
-  read -r -d '' expectedDoc2 << EOM
----
-a: test_doc2
-EOM
-  assertEquals "$expectedDoc2" "$doc2"
-}
-
-testBasicSplitWithIndexEvalAll() {
-  cat >test.yml <<EOL
-a: test_doc1
---- 
-a: test_doc2
-EOL
-
-  ./yq ea test.yml -s '"test_" + $index'
-
-  doc1=$(cat test_0.yml)
-  
-  assertEquals "a: test_doc1" "$doc1"
-
-  doc2=$(cat test_1.yml)
-  read -r -d '' expectedDoc2 << EOM
----
-a: test_doc2
-EOM
-  assertEquals "$expectedDoc2" "$doc2"
-}
-
-
-testArraySplitWithNameNoSeparators() {
-  cat >test.yml <<EOL
-- name: test_fred
-  age: 35
-- name: test_catherine
-  age: 37
-EOL
-
-  ./yq e --no-doc -s ".name"  ".[]" test.yml 
-
-  doc1=$(cat test_fred.yml)
-  read -r -d '' expectedDoc1 << EOM
-name: test_fred
-age: 35
-EOM
-
-  assertEquals "$expectedDoc1" "$doc1"
-
-  doc2=$(cat test_catherine.yml)
-  read -r -d '' expectedDoc2 << EOM
-name: test_catherine
-age: 37
-EOM
-  assertEquals "$expectedDoc2" "$doc2"
-}
-
-testArraySplitWithNameNoSeparatorsEvalAll() {
-  cat >test.yml <<EOL
-- name: test_fred
-  age: 35
-- name: test_catherine
-  age: 37
-EOL
-
-cat >test2.yml <<EOL
-- name: test_mike
-  age: 564
-EOL
-
-  ./yq ea --no-doc -s ".name"  ".[]" test.yml test2.yml
-
-  doc1=$(cat test_fred.yml)
-  read -r -d '' expectedDoc1 << EOM
-name: test_fred
-age: 35
-EOM
-
-  assertEquals "$expectedDoc1" "$doc1"
-
-  doc2=$(cat test_catherine.yml)
-  read -r -d '' expectedDoc2 << EOM
-name: test_catherine
-age: 37
-EOM
-  assertEquals "$expectedDoc2" "$doc2"
-
-
-  doc3=$(cat test_mike.yml)
-  read -r -d '' expectedDoc3 << EOM
-name: test_mike
-age: 564
-EOM
-  assertEquals "$expectedDoc3" "$doc3"
-}
-
-source ./scripts/shunit2

action.yml

@@ -1,15 +1,11 @@
 name: 'yq - portable yaml processor'
 description: 'create, read, update, delete, merge, validate and do more with yaml'
-branding:
-  icon: command
-  color: gray-dark
+icon: command
+color: gray-dark
 inputs:
   cmd:
     description: 'The Command which should be run'
     required: true
-outputs:
-  result:
-    description: "The complete result from the yq command being run"
 runs:
   using: 'docker'
   image: 'github-action/Dockerfile'

cmd/commands_test.go

@@ -0,0 +1,83 @@
+package cmd
+
+// import (
+// 	"strings"
+// 	"testing"
+
+// 	"github.com/mikefarah/yq/v3/test"
+// 	"github.com/spf13/cobra"
+// )
+
+// func getRootCommand() *cobra.Command {
+// 	return New()
+// }
+
+// func TestRootCmd(t *testing.T) {
+// 	cmd := getRootCommand()
+// 	result := test.RunCmd(cmd, "")
+// 	if result.Error != nil {
+// 		t.Error(result.Error)
+// 	}
+
+// 	if !strings.Contains(result.Output, "Usage:") {
+// 		t.Error("Expected usage message to be printed out, but the usage message was not found.")
+// 	}
+// }
+
+// func TestRootCmd_Help(t *testing.T) {
+// 	cmd := getRootCommand()
+// 	result := test.RunCmd(cmd, "--help")
+// 	if result.Error != nil {
+// 		t.Error(result.Error)
+// 	}
+
+// 	if !strings.Contains(result.Output, "yq is a lightweight and portable command-line YAML processor. It aims to be the jq or sed of yaml files.") {
+// 		t.Error("Expected usage message to be printed out, but the usage message was not found.")
+// 	}
+// }
+
+// func TestRootCmd_VerboseLong(t *testing.T) {
+// 	cmd := getRootCommand()
+// 	result := test.RunCmd(cmd, "--verbose")
+// 	if result.Error != nil {
+// 		t.Error(result.Error)
+// 	}
+
+// 	if !verbose {
+// 		t.Error("Expected verbose to be true")
+// 	}
+// }
+
+// func TestRootCmd_VerboseShort(t *testing.T) {
+// 	cmd := getRootCommand()
+// 	result := test.RunCmd(cmd, "-v")
+// 	if result.Error != nil {
+// 		t.Error(result.Error)
+// 	}
+
+// 	if !verbose {
+// 		t.Error("Expected verbose to be true")
+// 	}
+// }
+
+// func TestRootCmd_VersionShort(t *testing.T) {
+// 	cmd := getRootCommand()
+// 	result := test.RunCmd(cmd, "-V")
+// 	if result.Error != nil {
+// 		t.Error(result.Error)
+// 	}
+// 	if !strings.Contains(result.Output, "yq version") {
+// 		t.Error("expected version message to be printed out, but the message was not found.")
+// 	}
+// }
+
+// func TestRootCmd_VersionLong(t *testing.T) {
+// 	cmd := getRootCommand()
+// 	result := test.RunCmd(cmd, "--version")
+// 	if result.Error != nil {
+// 		t.Error(result.Error)
+// 	}
+// 	if !strings.Contains(result.Output, "yq version") {
+// 		t.Error("expected version message to be printed out, but the message was not found.")
+// 	}
+// }

cmd/constant.go

@@ -1,18 +1,9 @@
 package cmd
 
-var leadingContentPreProcessing = true
 var unwrapScalar = true
 
 var writeInplace = false
 var outputToJSON = false
-var outputFormat = "yaml"
-var inputFormat = "yaml"
-
-var xmlAttributePrefix = "+"
-var xmlContentName = "+content"
-var xmlStrictMode = false
-var xmlKeepNamespace = true
-var xmlUseRawToken = true
 
 var exitStatus = false
 var forceColor = false
@@ -23,16 +14,5 @@ var noDocSeparators = false
 var nullInput = false
 var verbose = false
 var version = false
-var prettyPrint = false
-
-// can be either "" (off), "extract" or "process"
-var frontMatter = ""
-
-var splitFileExp = ""
-var splitFileExpFile = ""
 
 var completedSuccessfully = false
-
-var forceExpression = ""
-
-var expressionFile = ""

cmd/evaluate_all_command.go

@@ -2,6 +2,8 @@ package cmd
 
 import (
 	"errors"
+	"fmt"
+	"os"
 
 	"github.com/mikefarah/yq/v4/pkg/yqlib"
 	"github.com/spf13/cobra"
@@ -13,109 +15,69 @@ func createEvaluateAllCommand() *cobra.Command {
 		Aliases: []string{"ea"},
 		Short:   "Loads _all_ yaml documents of _all_ yaml files and runs expression once",
 		Example: `
-# Merge f2.yml into f1.yml (inplace)
-yq eval-all --inplace 'select(fileIndex == 0) * select(fileIndex == 1)' f1.yml f2.yml
-## the same command and expression using shortened names:
-yq ea -i 'select(fi == 0) * select(fi == 1)' f1.yml f2.yml
-
-
-# Merge all given files
-yq ea '. as $item ireduce ({}; . * $item )' file1.yml file2.yml ...
-
-# Pipe from STDIN
-## use '-' as a filename to pipe from STDIN
-cat file2.yml | yq ea '.a.b' file1.yml - file3.yml
-`,
-		Long: `yq is a portable command-line YAML processor (https://github.com/mikefarah/yq/) 
-See https://mikefarah.gitbook.io/yq/ for detailed documentation and examples.
-
-## Evaluate All ##
-This command loads _all_ yaml documents of _all_ yaml files and runs expression once
-Useful when you need to run an expression across several yaml documents or files (like merge).
-Note that it consumes more memory than eval.
+# merges f2.yml into f1.yml (inplace)
+yq eval-all --inplace 'select(fileIndex == 0) * select(fileIndex == 1)' f1.yml f2.yml		
 `,
+		Long: "Evaluate All:\nUseful when you need to run an expression across several yaml documents or files. Consumes more memory than eval",
 		RunE: evaluateAll,
 	}
 	return cmdEvalAll
 }
-func evaluateAll(cmd *cobra.Command, args []string) (cmdError error) {
+func evaluateAll(cmd *cobra.Command, args []string) error {
+	cmd.SilenceUsage = true
 	// 0 args, read std in
 	// 1 arg, null input, process expression
 	// 1 arg, read file in sequence
 	// 2+ args, [0] = expression, file the rest
 
 	var err error
-
-	expression, args, err := initCommand(cmd, args)
-	if err != nil {
-		return err
-	}
+	stat, _ := os.Stdin.Stat()
+	pipingStdIn := (stat.Mode() & os.ModeCharDevice) == 0
 
 	out := cmd.OutOrStdout()
 
+	fileInfo, _ := os.Stdout.Stat()
+
+	if forceColor || (!forceNoColor && (fileInfo.Mode()&os.ModeCharDevice) != 0) {
+		colorsEnabled = true
+	}
+
+	if writeInplace && len(args) < 2 {
+		return fmt.Errorf("Write inplace flag only applicable when giving an expression and at least one file")
+	}
+
 	if writeInplace {
 		// only use colors if its forced
 		colorsEnabled = forceColor
-		writeInPlaceHandler := yqlib.NewWriteInPlaceHandler(args[0])
+		writeInPlaceHandler := yqlib.NewWriteInPlaceHandler(args[1])
 		out, err = writeInPlaceHandler.CreateTempFile()
 		if err != nil {
 			return err
 		}
 		// need to indirectly call the function so  that completedSuccessfully is
 		// passed when we finish execution as opposed to now
-		defer func() {
-			if cmdError == nil {
-				cmdError = writeInPlaceHandler.FinishWriteInPlace(completedSuccessfully)
-			}
-		}()
+		defer func() { writeInPlaceHandler.FinishWriteInPlace(completedSuccessfully) }()
 	}
 
-	format, err := yqlib.OutputFormatFromString(outputFormat)
-	if err != nil {
-		return err
-	}
-
-	decoder, err := configureDecoder()
-	if err != nil {
-		return err
-	}
-
-	printerWriter, err := configurePrinterWriter(format, out)
-	if err != nil {
-		return err
-	}
-	encoder := configureEncoder(format)
-
-	printer := yqlib.NewPrinter(encoder, printerWriter)
-
-	if frontMatter != "" {
-		frontMatterHandler := yqlib.NewFrontMatterHandler(args[0])
-		err = frontMatterHandler.Split()
-		if err != nil {
-			return err
-		}
-		args[0] = frontMatterHandler.GetYamlFrontMatterFilename()
-
-		if frontMatter == "process" {
-			reader := frontMatterHandler.GetContentReader()
-			printer.SetAppendix(reader)
-			defer yqlib.SafelyCloseReader(reader)
-		}
-		defer frontMatterHandler.CleanUp()
-	}
+	printer := yqlib.NewPrinter(out, outputToJSON, unwrapScalar, colorsEnabled, indent, !noDocSeparators)
 
 	allAtOnceEvaluator := yqlib.NewAllAtOnceEvaluator()
-
 	switch len(args) {
 	case 0:
-		if nullInput {
-			err = yqlib.NewStreamEvaluator().EvaluateNew(processExpression(expression), printer, "")
+		if pipingStdIn {
+			err = allAtOnceEvaluator.EvaluateFiles("", []string{"-"}, printer)
 		} else {
 			cmd.Println(cmd.UsageString())
 			return nil
 		}
+	case 1:
+		if nullInput {
+			err = yqlib.NewStreamEvaluator().EvaluateNew(args[0], printer)
+		} else {
+			err = allAtOnceEvaluator.EvaluateFiles("", []string{args[0]}, printer)
+		}
 	default:
-		err = allAtOnceEvaluator.EvaluateFiles(processExpression(expression), args, printer, leadingContentPreProcessing, decoder)
+		err = allAtOnceEvaluator.EvaluateFiles(args[0], args[1:], printer)
 	}
 
 	completedSuccessfully = err == nil

cmd/evalute_sequence_command.go

@@ -3,6 +3,7 @@ package cmd
 import (
 	"errors"
 	"fmt"
+	"os"
 
 	"github.com/mikefarah/yq/v4/pkg/yqlib"
 	"github.com/spf13/cobra"
@@ -12,124 +13,82 @@ func createEvaluateSequenceCommand() *cobra.Command {
 	var cmdEvalSequence = &cobra.Command{
 		Use:     "eval [expression] [yaml_file1]...",
 		Aliases: []string{"e"},
-		Short:   "(default) Apply the expression to each document in each yaml file in sequence",
+		Short:   "Apply expression to each document in each yaml file given in sequence",
 		Example: `
-# Reads field under the given path for each file
-yq e '.a.b' f1.yml f2.yml 
+# runs the expression against each file, in series
+yq e '.a.b | length' f1.yml f2.yml 
 
-# Prints out the file
+# prints out the file
 yq e sample.yaml 
 
-# Pipe from STDIN
-## use '-' as a filename to pipe from STDIN
-cat file2.yml | yq e '.a.b' file1.yml - file3.yml
-
-# Creates a new yaml document
-## Note that editing an empty file does not work.
+# prints a new yaml document
 yq e -n '.a.b.c = "cat"' 
 
-# Update a file inplace
+
+# updates file.yaml directly
 yq e '.a.b = "cool"' -i file.yaml 
 `,
-		Long: `yq is a portable command-line YAML processor (https://github.com/mikefarah/yq/) 
-See https://mikefarah.gitbook.io/yq/ for detailed documentation and examples.
-
-## Evaluate Sequence ##
-This command iterates over each yaml document from each given file, applies the 
-expression and prints the result in sequence.`,
+		Long: "Evaluate Sequence:\nIterate over each yaml document, apply the expression and print the results, in sequence.",
 		RunE: evaluateSequence,
 	}
 	return cmdEvalSequence
 }
-
-func processExpression(expression string) string {
-
-	if prettyPrint && expression == "" {
-		return yqlib.PrettyPrintExp
-	} else if prettyPrint {
-		return fmt.Sprintf("%v | %v", expression, yqlib.PrettyPrintExp)
-	}
-	return expression
-}
-
-func evaluateSequence(cmd *cobra.Command, args []string) (cmdError error) {
+func evaluateSequence(cmd *cobra.Command, args []string) error {
+	cmd.SilenceUsage = true
 	// 0 args, read std in
 	// 1 arg, null input, process expression
 	// 1 arg, read file in sequence
 	// 2+ args, [0] = expression, file the rest
 
+	var err error
+	stat, _ := os.Stdin.Stat()
+	pipingStdIn := (stat.Mode() & os.ModeCharDevice) == 0
+
 	out := cmd.OutOrStdout()
 
-	var err error
+	fileInfo, _ := os.Stdout.Stat()
 
-	expression, args, err := initCommand(cmd, args)
-	if err != nil {
-		return err
+	if forceColor || (!forceNoColor && (fileInfo.Mode()&os.ModeCharDevice) != 0) {
+		colorsEnabled = true
+	}
+
+	if writeInplace && len(args) < 2 {
+		return fmt.Errorf("Write inplace flag only applicable when giving an expression and at least one file")
 	}
 
 	if writeInplace {
 		// only use colors if its forced
 		colorsEnabled = forceColor
-		writeInPlaceHandler := yqlib.NewWriteInPlaceHandler(args[0])
+		writeInPlaceHandler := yqlib.NewWriteInPlaceHandler(args[1])
 		out, err = writeInPlaceHandler.CreateTempFile()
 		if err != nil {
 			return err
 		}
 		// need to indirectly call the function so  that completedSuccessfully is
 		// passed when we finish execution as opposed to now
-		defer func() {
-			if cmdError == nil {
-				cmdError = writeInPlaceHandler.FinishWriteInPlace(completedSuccessfully)
-			}
-		}()
+		defer func() { writeInPlaceHandler.FinishWriteInPlace(completedSuccessfully) }()
 	}
 
-	format, err := yqlib.OutputFormatFromString(outputFormat)
-	if err != nil {
-		return err
-	}
+	printer := yqlib.NewPrinter(out, outputToJSON, unwrapScalar, colorsEnabled, indent, !noDocSeparators)
 
-	printerWriter, err := configurePrinterWriter(format, out)
-	if err != nil {
-		return err
-	}
-	encoder := configureEncoder(format)
-
-	printer := yqlib.NewPrinter(encoder, printerWriter)
-
-	decoder, err := configureDecoder()
-	if err != nil {
-		return err
-	}
 	streamEvaluator := yqlib.NewStreamEvaluator()
 
-	if frontMatter != "" {
-		yqlib.GetLogger().Debug("using front matter handler")
-		frontMatterHandler := yqlib.NewFrontMatterHandler(args[0])
-		err = frontMatterHandler.Split()
-		if err != nil {
-			return err
-		}
-		args[0] = frontMatterHandler.GetYamlFrontMatterFilename()
-
-		if frontMatter == "process" {
-			reader := frontMatterHandler.GetContentReader()
-			printer.SetAppendix(reader)
-			defer yqlib.SafelyCloseReader(reader)
-		}
-		defer frontMatterHandler.CleanUp()
-	}
-
 	switch len(args) {
 	case 0:
-		if nullInput {
-			err = streamEvaluator.EvaluateNew(processExpression(expression), printer, "")
+		if pipingStdIn {
+			err = streamEvaluator.EvaluateFiles("", []string{"-"}, printer)
 		} else {
 			cmd.Println(cmd.UsageString())
 			return nil
 		}
+	case 1:
+		if nullInput {
+			err = streamEvaluator.EvaluateNew(args[0], printer)
+		} else {
+			err = streamEvaluator.EvaluateFiles("", []string{args[0]}, printer)
+		}
 	default:
-		err = streamEvaluator.EvaluateFiles(processExpression(expression), args, printer, leadingContentPreProcessing, decoder)
+		err = streamEvaluator.EvaluateFiles(args[0], args[1:], printer)
 	}
 	completedSuccessfully = err == nil
 

cmd/root.go

@@ -3,7 +3,6 @@ package cmd
 import (
 	"os"
 
-	"github.com/mikefarah/yq/v4/pkg/yqlib"
 	"github.com/spf13/cobra"
 	logging "gopkg.in/op/go-logging.v1"
 )
@@ -12,32 +11,18 @@ func New() *cobra.Command {
 	var rootCmd = &cobra.Command{
 		Use:   "yq",
 		Short: "yq is a lightweight and portable command-line YAML processor.",
-		Long: `yq is a portable command-line YAML processor (https://github.com/mikefarah/yq/) 
-See https://mikefarah.gitbook.io/yq/ for detailed documentation and examples.`,
-		Example: `
-# yq defaults to 'eval' command if no command is specified. See "yq eval --help" for more examples.
-
-# read the "stuff" node from "myfile.yml"
-yq '.stuff' < myfile.yml
-
-# update myfile.yml in place
-yq -i '.stuff = "foo"' myfile.yml
-
-# print contents of sample.json as idiomatic YAML
-yq -P sample.json
-`,
-
+		Long:  `yq is a lightweight and portable command-line YAML processor. It aims to be the jq or sed of yaml files.`,
 		RunE: func(cmd *cobra.Command, args []string) error {
 			if version {
 				cmd.Print(GetVersionDisplay())
 				return nil
 			}
-			return evaluateSequence(cmd, args)
+			cmd.Println(cmd.UsageString())
+			return nil
 
 		},
 		PersistentPreRun: func(cmd *cobra.Command, args []string) {
 			cmd.SetOut(cmd.OutOrStdout())
-
 			var format = logging.MustStringFormatter(
 				`%{color}%{time:15:04:05} %{shortfunc} [%{level:.4s}]%{color:reset} %{message}`,
 			)
@@ -51,51 +36,22 @@ yq -P sample.json
 			}
 
 			logging.SetBackend(backend)
-			yqlib.InitExpressionParser()
-			yqlib.XMLPreferences.AttributePrefix = xmlAttributePrefix
-			yqlib.XMLPreferences.ContentName = xmlContentName
-			yqlib.XMLPreferences.StrictMode = xmlStrictMode
 		},
 	}
 
 	rootCmd.PersistentFlags().BoolVarP(&verbose, "verbose", "v", false, "verbose mode")
-
-	rootCmd.PersistentFlags().BoolVarP(&outputToJSON, "tojson", "j", false, "(deprecated) output as json. Set indent to 0 to print json in one line.")
-	err := rootCmd.PersistentFlags().MarkDeprecated("tojson", "please use -o=json instead")
-	if err != nil {
-		panic(err)
-	}
-
-	rootCmd.PersistentFlags().StringVarP(&outputFormat, "output-format", "o", "yaml", "[yaml|y|json|j|props|p|xml|x] output format type.")
-	rootCmd.PersistentFlags().StringVarP(&inputFormat, "input-format", "p", "yaml", "[yaml|y|props|p|xml|x] parse format for input. Note that json is a subset of yaml.")
-
-	rootCmd.PersistentFlags().StringVar(&xmlAttributePrefix, "xml-attribute-prefix", "+", "prefix for xml attributes")
-	rootCmd.PersistentFlags().StringVar(&xmlContentName, "xml-content-name", "+content", "name for xml content (if no attribute name is present).")
-	rootCmd.PersistentFlags().BoolVar(&xmlStrictMode, "xml-strict-mode", false, "enables strict parsing of XML. See https://pkg.go.dev/encoding/xml for more details.")
-	rootCmd.PersistentFlags().BoolVar(&xmlKeepNamespace, "xml-keep-namespace", true, "enables keeping namespace after parsing attributes")
-	rootCmd.PersistentFlags().BoolVar(&xmlUseRawToken, "xml-raw-token", true, "enables using RawToken method instead Token. Commonly disables namespace translations. See https://pkg.go.dev/encoding/xml#Decoder.RawToken for details.")
-
-	rootCmd.PersistentFlags().BoolVarP(&nullInput, "null-input", "n", false, "Don't read input, simply evaluate the expression given. Useful for creating docs from scratch.")
+	rootCmd.PersistentFlags().BoolVarP(&outputToJSON, "tojson", "j", false, "output as json. Set indent to 0 to print json in one line.")
+	rootCmd.PersistentFlags().BoolVarP(&nullInput, "null-input", "n", false, "Don't read input, simply evaluate the expression given. Useful for creating yaml docs from scratch.")
 	rootCmd.PersistentFlags().BoolVarP(&noDocSeparators, "no-doc", "N", false, "Don't print document separators (---)")
 
 	rootCmd.PersistentFlags().IntVarP(&indent, "indent", "I", 2, "sets indent level for output")
 	rootCmd.Flags().BoolVarP(&version, "version", "V", false, "Print version information and quit")
-	rootCmd.PersistentFlags().BoolVarP(&writeInplace, "inplace", "i", false, "update the file inplace of first file given.")
-	rootCmd.PersistentFlags().BoolVarP(&unwrapScalar, "unwrapScalar", "r", true, "unwrap scalar, print the value with no quotes, colors or comments")
-	rootCmd.PersistentFlags().BoolVarP(&prettyPrint, "prettyPrint", "P", false, "pretty print, shorthand for '... style = \"\"'")
+	rootCmd.PersistentFlags().BoolVarP(&writeInplace, "inplace", "i", false, "update the yaml file inplace of first yaml file given.")
+	rootCmd.PersistentFlags().BoolVarP(&unwrapScalar, "unwrapScalar", "", true, "unwrap scalar, print the value with no quotes, colors or comments")
 	rootCmd.PersistentFlags().BoolVarP(&exitStatus, "exit-status", "e", false, "set exit status if there are no matches or null or false is returned")
 
 	rootCmd.PersistentFlags().BoolVarP(&forceColor, "colors", "C", false, "force print with colors")
 	rootCmd.PersistentFlags().BoolVarP(&forceNoColor, "no-colors", "M", false, "force print with no colors")
-	rootCmd.PersistentFlags().StringVarP(&frontMatter, "front-matter", "f", "", "(extract|process) first input as yaml front-matter. Extract will pull out the yaml content, process will run the expression against the yaml content, leaving the remaining data intact")
-	rootCmd.PersistentFlags().StringVarP(&forceExpression, "expression", "", "", "forcibly set the expression argument. Useful when yq argument detection thinks your expression is a file.")
-	rootCmd.PersistentFlags().BoolVarP(&leadingContentPreProcessing, "header-preprocess", "", true, "Slurp any header comments and separators before processing expression.")
-
-	rootCmd.PersistentFlags().StringVarP(&splitFileExp, "split-exp", "s", "", "print each result (or doc) into a file named (exp). [exp] argument must return a string. You can use $index in the expression as the result counter.")
-	rootCmd.PersistentFlags().StringVarP(&splitFileExpFile, "split-exp-file", "", "", "Use a file to specify the split-exp expression.")
-
-	rootCmd.PersistentFlags().StringVarP(&expressionFile, "from-file", "", "", "Load expression from specified file.")
-
 	rootCmd.AddCommand(
 		createEvaluateSequenceCommand(),
 		createEvaluateAllCommand(),

cmd/utils.go

@@ -1,177 +0,0 @@
-package cmd
-
-import (
-	"fmt"
-	"io"
-	"os"
-
-	"github.com/mikefarah/yq/v4/pkg/yqlib"
-	"github.com/spf13/cobra"
-	"gopkg.in/op/go-logging.v1"
-)
-
-func initCommand(cmd *cobra.Command, args []string) (string, []string, error) {
-	cmd.SilenceUsage = true
-
-	fileInfo, _ := os.Stdout.Stat()
-
-	if forceColor || (!forceNoColor && (fileInfo.Mode()&os.ModeCharDevice) != 0) {
-		colorsEnabled = true
-	}
-
-	expression, args, err := processArgs(args)
-	if err != nil {
-		return "", nil, err
-	}
-
-	if splitFileExpFile != "" {
-		splitExpressionBytes, err := os.ReadFile(splitFileExpFile)
-		if err != nil {
-			return "", nil, err
-		}
-		splitFileExp = string(splitExpressionBytes)
-	}
-
-	// backwards compatibility
-	if outputToJSON {
-		outputFormat = "json"
-	}
-
-	if writeInplace && (len(args) == 0 || args[0] == "-") {
-		return "", nil, fmt.Errorf("write inplace flag only applicable when giving an expression and at least one file")
-	}
-
-	if frontMatter != "" && len(args) == 0 {
-		return "", nil, fmt.Errorf("front matter flag only applicable when giving an expression and at least one file")
-	}
-
-	if writeInplace && splitFileExp != "" {
-		return "", nil, fmt.Errorf("write inplace cannot be used with split file")
-	}
-
-	if nullInput && len(args) > 0 {
-		return "", nil, fmt.Errorf("cannot pass files in when using null-input flag")
-	}
-
-	return expression, args, nil
-}
-
-func configureDecoder() (yqlib.Decoder, error) {
-	yqlibInputFormat, err := yqlib.InputFormatFromString(inputFormat)
-	if err != nil {
-		return nil, err
-	}
-	switch yqlibInputFormat {
-	case yqlib.XMLInputFormat:
-		return yqlib.NewXMLDecoder(xmlAttributePrefix, xmlContentName, xmlStrictMode, xmlKeepNamespace, xmlUseRawToken), nil
-	case yqlib.PropertiesInputFormat:
-		return yqlib.NewPropertiesDecoder(), nil
-	case yqlib.JsonInputFormat:
-		return yqlib.NewJSONDecoder(), nil
-	case yqlib.CSVObjectInputFormat:
-		return yqlib.NewCSVObjectDecoder(','), nil
-	case yqlib.TSVObjectInputFormat:
-		return yqlib.NewCSVObjectDecoder('\t'), nil
-	}
-
-	return yqlib.NewYamlDecoder(), nil
-}
-
-func configurePrinterWriter(format yqlib.PrinterOutputFormat, out io.Writer) (yqlib.PrinterWriter, error) {
-
-	var printerWriter yqlib.PrinterWriter
-
-	if splitFileExp != "" {
-		colorsEnabled = forceColor
-		splitExp, err := yqlib.ExpressionParser.ParseExpression(splitFileExp)
-		if err != nil {
-			return nil, fmt.Errorf("bad split document expression: %w", err)
-		}
-		printerWriter = yqlib.NewMultiPrinterWriter(splitExp, format)
-	} else {
-		printerWriter = yqlib.NewSinglePrinterWriter(out)
-	}
-	return printerWriter, nil
-}
-
-func configureEncoder(format yqlib.PrinterOutputFormat) yqlib.Encoder {
-	switch format {
-	case yqlib.JSONOutputFormat:
-		return yqlib.NewJSONEncoder(indent, colorsEnabled)
-	case yqlib.PropsOutputFormat:
-		return yqlib.NewPropertiesEncoder(unwrapScalar)
-	case yqlib.CSVOutputFormat:
-		return yqlib.NewCsvEncoder(',')
-	case yqlib.TSVOutputFormat:
-		return yqlib.NewCsvEncoder('\t')
-	case yqlib.YamlOutputFormat:
-		return yqlib.NewYamlEncoder(indent, colorsEnabled, !noDocSeparators, unwrapScalar)
-	case yqlib.XMLOutputFormat:
-		return yqlib.NewXMLEncoder(indent, xmlAttributePrefix, xmlContentName)
-	}
-	panic("invalid encoder")
-}
-
-// this is a hack to enable backwards compatibility with githubactions (which pipe /dev/null into everything)
-// and being able to call yq with the filename as a single parameter
-//
-// without this - yq detects there is stdin (thanks githubactions),
-// then tries to parse the filename as an expression
-func maybeFile(str string) bool {
-	yqlib.GetLogger().Debugf("checking '%v' is a file", str)
-	stat, err := os.Stat(str) // #nosec
-	result := err == nil && !stat.IsDir()
-	if yqlib.GetLogger().IsEnabledFor(logging.DEBUG) {
-		if err != nil {
-			yqlib.GetLogger().Debugf("error: %v", err)
-		} else {
-			yqlib.GetLogger().Debugf("error: %v, dir: %v", err, stat.IsDir())
-		}
-		yqlib.GetLogger().Debugf("result: %v", result)
-	}
-	return result
-}
-
-func processStdInArgs(args []string) []string {
-	stat, _ := os.Stdin.Stat()
-	pipingStdin := (stat.Mode() & os.ModeCharDevice) == 0
-
-	// if we've been given a file, don't automatically
-	// read from stdin.
-	// this happens if there is more than one argument
-	// or only one argument and its a file
-	if nullInput || !pipingStdin || len(args) > 1 || (len(args) > 0 && maybeFile(args[0])) {
-		return args
-	}
-
-	for _, arg := range args {
-		if arg == "-" {
-			return args
-		}
-	}
-	yqlib.GetLogger().Debugf("missing '-', adding it to the end")
-
-	// we're piping from stdin, but there's no '-' arg
-	// lets add one to the end
-	return append(args, "-")
-}
-
-func processArgs(originalArgs []string) (string, []string, error) {
-	expression := forceExpression
-	if expressionFile != "" {
-		expressionBytes, err := os.ReadFile(expressionFile)
-		if err != nil {
-			return "", nil, err
-		}
-		expression = string(expressionBytes)
-	}
-
-	args := processStdInArgs(originalArgs)
-	yqlib.GetLogger().Debugf("processed args: %v", args)
-	if expression == "" && len(args) > 0 && args[0] != "-" && !maybeFile(args[0]) {
-		yqlib.GetLogger().Debug("assuming expression is '%v'", args[0])
-		expression = args[0]
-		args = args[1:]
-	}
-	return expression, args, nil
-}

cmd/version.go

@@ -11,7 +11,7 @@ var (
 	GitDescribe string
 
 	// Version is main version number that is being run at the moment.
-	Version = "4.26.1"
+	Version = "4.1.0"
 
 	// VersionPrerelease is a pre-release marker for the version. If this is "" (empty string)
 	// then it means that it is a final release. Otherwise, this is a pre-release
@@ -25,7 +25,7 @@ const ProductName = "yq"
 // GetVersionDisplay composes the parts of the version in a way that's suitable
 // for displaying to humans.
 func GetVersionDisplay() string {
-	return fmt.Sprintf("yq (https://github.com/mikefarah/yq/) version %s\n", getHumanVersion())
+	return fmt.Sprintf("%s version %s\n", ProductName, getHumanVersion())
 }
 
 func getHumanVersion() string {

cmd/version_test.go

@@ -3,7 +3,7 @@ package cmd
 import "testing"
 
 func TestGetVersionDisplay(t *testing.T) {
-	var expectedVersion = ProductName + " (https://github.com/mikefarah/yq/) version " + Version
+	var expectedVersion = ProductName + " version " + Version
 	if VersionPrerelease != "" {
 		expectedVersion = expectedVersion + "-" + VersionPrerelease
 	}

debian/changelog

@@ -1,137 +1,3 @@
-yq (4.16.2) focal; urgency=medium
-
-  * Fixed with semicolon space issue
-  * Updating with documentation
-  * Added STDIN example to the top
-  * minor readme cleanup
-  * Help text tweak
-  * Fixed docker timeout - simplify docker builds
-  * New release with docker build fixes
-  * Updating to go 1.17 to fix CVE #944
-  * Fix a typo in root.go
-  * Skip the tests if the nocheck Debian build option is specified
-  * Fixed select bug (#958)
-  * Sped up explode operator
-  * Slight performance improvement to context.ChildContext
-  * Speed up multiply
-  * Update README with recently added / changed options
-  * Make deepMatch report in linear time
-  * Removed leadingContentPreProcessing flag - header preprocessing is stable
-  * Revert "Removed leadingContentPreProcessing flag - header preprocessing is stable"
-  * Keep flag, it is needed in corner cases
-  * Updated Readme
-  * Man page
-  * Fixed expression parsing bug #970
-  * Bumping go-lang, docker versions
-  * Added test release flow
-  * Updated github action release to generate man page
-  * Bumping version
-  * Removing no longer needed github action
-  * Added decoder op
-  * Fixed newline handling when decoding/encoding
-  * Fixed newline handling in encoder/decoder
-  * Can specify indent in encode ops
-  * Added group_by operator
-  * Added flatten operator
-  * Fixed flatten error message
-  * Improving docs
-  * Split printer
-  * Refactored command logic
-  * Fix JSON encoding removing null #985
-  * Fixed acceptance tests
-  * gitbook
-  * Update document generation script
-  * Updating README
-  * Updating release instructions
-  * github action no longer uses data1.yml
-  * Create dependabot.yml
-  * Bump actions/create-release from 1.0.0 to 1.1.4
-  * Bump actions/setup-go from 1 to 2.1.4
-  * Bump github.com/goccy/go-yaml from 1.8.9 to 1.9.4
-  * Bump github.com/jinzhu/copier from 0.2.8 to 0.3.2
-  * Bump github.com/fatih/color from 1.10.0 to 1.13.0
-  * Bump github.com/spf13/cobra from 1.1.3 to 1.2.1
-  * Update dependabot.yml
-  * Update go.yml
-  * add build check to PRs
-  * Include secure as part of build process
-  * Fixing bad label in github action
-  * fixed printer test
-  * remove leading content indicator
-  * Fixed header preprocessing!
-  * lint : define golangci configuration file
-  * Update check.sh
-  * Load file acceptance test
-  * Minor improvement on handling front matter
-  * Improved load doc
-  * feature: detect MANPATh and install there
-  * Update install-man-page.sh
-  * simplify prod stage, move version label to action
-  * add labels, quote some values
-  * enable errorlint linter
-  * Added errorlint to devtools
-  * Added key operator
-  * Added more tests
-  * Fixing comments
-  * Attempt to fix golint problem
-  * Include version query for tools
-  * Clean up errored file?
-  * enable misspell linter
-  * updated readme
-  * update Golangci version to v1.43.0
-  * gci linter
-  * Better merge array by key example
-  * Added credit for merge by array example
-  * Better formatting of merge arrays example
-  * Better merge example
-  * Add accessor for the yq logger instance (#1013)
-  * Fixed collect op when working with multiple nodes
-  * Added map, map_values
-  * Add support for Podman as well as Docker (#1026)
-  * Bump github.com/jinzhu/copier from 0.3.2 to 0.3.4 (#1027)
-  * Added csv, tsv output formats
-  * Added encoder tests
-  * Cleanup test
-  * Fixed docker permission issue #1014
-  * Recording release notes for next release
-  * Assignment op no longer clobbers anchor (#1029)
-  * Added sort_by operator
-  * Improved error message
-  * Improved tips and tricks
-  * Report while filename failed to parse #1030
-  * Added script for extracting checksums
-  * Improved extract-checksum.sh
-  * Bump github.com/spf13/cobra from 1.2.1 to 1.3.0 (#1039)
-  * enable more linters (#1043)
-  * Bump golang compiler #1037
-
- -- Roberto Mier Escandon <rmescandon@gmail.com>  Tue, 21 Dec 2021 09:41:44 +0000
-
-yq (4.13.0) focal; urgency=medium
-
-  * New `with` operator for making multiple changes to a given path
-  * New `contains` operator, works like the `jq` equivalent
-  * Subtract operator now supports subtracting elements from arrays!
-  * Fixed Swapping values using variables #934
-  * Github Action now properly supports multiline output #936, thanks @pjxiao
-  * Fixed missing closing bracket validation #932
-  * Fix processing of hex numbers #929
-  * Fixed alternative and union operator issues #930
-  * Can now convert yaml to properties properties format (`-o=props`), See [docs](https://mikefarah.gitbook.io/yq/v/v4.x/usage/properties) for more info.
-  * Fixed document header/footer comment handling when merging (https://github.com/mikefarah/yq/issues/919)
-  * pretty print yaml 1.1 compatibility  (https://github.com/mikefarah/yq/issues/914)
-
- -- Roberto Mier Escandon <rmescandon@gmail.com>  Thu, 16 Sep 2021 20:58:30 +0200
-
-yq (4.9.6) focal; urgency=medium
-
-  * Added darwin/arm64 build, thanks @alecthomas
-  * Incremented docker alpine base version, thanks @da6d6i7-bronga
-  * Bug fix: multine expression
-  * Bug fix: special character
-
- -- Roberto Mier Escandon <rmescandon@gmail.com>  Tue, 29 Jun 2021 21:32:14 +0200
-
 yq (3.3.2) focal; urgency=medium
 
   * Bug fix: existStatus bug (#459)

debian/control

@@ -3,8 +3,8 @@ Section: devel
 Priority: optional
 Maintainer: Roberto Mier Escandón <rmescandon@gmail.com>
 Build-Depends: debhelper (>=10),
-               golang-1.17-go,
-               pandoc,
+               dh-golang (>=1.34),
+               golang-1.13,
                rsync
 Standards-Version: 4.1.4
 Homepage: https://github.com/mikefarah/yq.git

debian/rules

@@ -1,6 +1,6 @@
 #!/usr/bin/make -f
 #
-# Copyright (C) 2018-2021 Roberto Mier Escandón <rmescandon@gmail.com>
+# Copyright (C) 2018 Roberto Mier Escandón <rmescandon@gmail.com>
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 3 as
@@ -17,25 +17,24 @@
 PROJECT := yq
 OWNER := mikefarah
 REPO := github.com
+GOVERSION := 1.13
 
 export DH_OPTIONS
 export DH_GOPKG := ${REPO}/${OWNER}/${PROJECT}
-export GOROOT := /usr/local/go
+export GOROOT := /usr/lib/go-${GOVERSION}
 export GOPATH := ${CURDIR}/_build
 export GOBIN := ${GOPATH}/bin
 export PATH := ${GOROOT}/bin:${GOBIN}:${PATH}
 export GOCACHE := /tmp/gocache
 export GOFLAGS := -mod=vendor
-export GO111MODULE := on
 
 SRCDIR := ${GOPATH}/src/${DH_GOPKG}
 DESTDIR := ${CURDIR}/debian/${PROJECT}
 BINDIR := /usr/bin
-MANDIR := /usr/share/man/man1/
 ASSETSDIR := /usr/share/${PROJECT}
 
 %:
-	dh $@
+	dh $@ --builddirectory=${GOPATH} --buildsystem=golang
 
 override_dh_auto_build:
 	mkdir -p ${SRCDIR}
@@ -43,32 +42,16 @@ override_dh_auto_build:
 	# copy project to local srcdir to build from there
 	rsync -avz --progress --exclude=_build --exclude=debian --exclude=tmp. --exclude=go.mod --exclude=docs . $(SRCDIR)
 	# build go code
-	( \
-		cd ${SRCDIR} && \
-		go install -buildmode=pie ./... \
-	)
-
-	# build man page
-	( \
-		cd ${SRCDIR} && \
-		./scripts/generate-man-page-md.sh && \
-		./scripts/generate-man-page.sh \
-	)
+	(cd ${SRCDIR} && go install -buildmode=pie ./...)
 	
 override_dh_auto_test:
-ifeq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
 	(cd ${SRCDIR} && go test -v ./...)
-endif
 
 override_dh_auto_install:
 	cp ${GOBIN}/yq ${DESTDIR}/${BINDIR}
 	cp -f ${SRCDIR}/LICENSE ${DESTDIR}/${ASSETSDIR}
 	chmod a+x ${DESTDIR}/${BINDIR}/yq
 
-	# man
-	mkdir -p "${DESTDIR}"/"${MANDIR}"
-	cp "${SRCDIR}"/yq.1 "${DESTDIR}"/"${MANDIR}" \
-
 override_dh_auto_clean:
 	dh_clean
 	rm -rf ${CURDIR}/_build

examples/base64.txt

@@ -1 +0,0 @@
-bXkgc2VjcmV0IGNoaWxsaSByZWNpcGUgaXMuLi4u

examples/data1.yaml

@@ -1,12 +1,4 @@
-# --------------------------------------------------
-# It's a test with comment
-# --------------------------------------------------
-test:
-  - name: a
-  - name: b
-  - name: c
-groups:
-  - name: a
-  - name: b
-  - name: c
-  - name: c
+a: simple # just the best
+b: [1, 2]
+c:
+  test: 1

examples/data2.yaml

@@ -1,5 +1,7 @@
-# --------------------------------------------------
-# It's a test with comment
-# --------------------------------------------------
-groups:
-  - name: d
+a: other # better than the original
+b: [3, 4]
+c:
+  toast: leave
+  test: 1
+  tell: 1
+  tasty.taco: cool

examples/empty.yaml

@@ -1 +1,2 @@
-# comment
+# a: apple
+# b: cat

examples/example.properties

@@ -1,6 +0,0 @@
-# comments on values appear
-person.name = Mike
-
-# comments on array values appear
-person.pets.0 = cat
-person.food.0 = pizza

examples/front-matter.yaml

@@ -1,6 +0,0 @@
----
-a: apple
-b: bannana
----
-hello there
-apples: great

examples/leading-seperator.yaml

@@ -1,2 +0,0 @@
----
-a: test

examples/mike.xml

@@ -1,14 +0,0 @@
-<!-- before cat -->
-<cat>
-	<!-- in cat before -->
-	<x>3<!-- multi
-line comment
-for x --></x>
-	<y>
-		<!-- in y before -->
-		<d><!-- in d before -->4<!-- in d after --></d>
-		<!-- in y after -->
-	</y>
-	<!-- in_cat_after -->
-</cat>
-<!-- after cat -->

examples/mike2.xml

@@ -1,11 +0,0 @@
-  <?xml version="1.0" encoding="UTF-8"?>
-  <!-- osm-->
-  <osm version="0.6" generator="CGImap 0.0.2">
-  <!-- bounds-->
-   <bounds minlat="54.0889580" minlon="12.2487570" maxlat="54.0913900" maxlon="12.2524800">
-   <!-- great -->
-   cool
-   </bounds>
-   <foo>ba2234r</foo>
-   <foo>bar2234233</foo>
-  </osm>

examples/sample_objects.csv

@@ -1,3 +0,0 @@
-name,numberOfCats,likesApples,height
-Gary,1,true,168.8
-Samantha's Rabbit,2,false,-188.8

examples/small.properties

@@ -1 +0,0 @@
-this.is = a properties file

examples/small.xml

@@ -1 +0,0 @@
-<this>is some xml</this>

examples/thing.yml

@@ -1,2 +0,0 @@
-a: apple is included
-b: cool.

github-action/Dockerfile

@@ -1,8 +1,5 @@
-FROM mikefarah/yq:4
+FROM mikefarah/yq:3
 
 COPY entrypoint.sh /entrypoint.sh
 
-# this seems to be the default user in github actions
-USER 1001
-
 ENTRYPOINT ["/entrypoint.sh"]

github-action/entrypoint.sh

@@ -1,9 +1,4 @@
 #!/bin/sh -l
-set -e
-echo "::debug::\$cmd: $1"
-RESULT=$(eval "$1")
-RESULT="${RESULT//'%'/'%25'}"
-RESULT="${RESULT//$'\n'/'%0A'}"
-RESULT="${RESULT//$'\r'/'%0D'}"
-echo "::debug::\$RESULT: $RESULT"
-echo ::set-output name=result::"$RESULT"
+
+echo "$1"
+eval $1

go.mod

@@ -1,30 +1,18 @@
 module github.com/mikefarah/yq/v4
 
 require (
-	github.com/a8m/envsubst v1.3.0
-	github.com/alecthomas/participle/v2 v2.0.0-beta.4
-	github.com/alecthomas/repr v0.1.0
-	github.com/elliotchance/orderedmap v1.4.0
-	github.com/fatih/color v1.13.0
-	github.com/goccy/go-json v0.9.10
-	github.com/goccy/go-yaml v1.9.5
-	github.com/jinzhu/copier v0.3.5
-	github.com/magiconair/properties v1.8.6
-	github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e
-	github.com/spf13/cobra v1.5.0
-	golang.org/x/net v0.0.0-20220708220712-1185a9018129
+	github.com/elliotchance/orderedmap v1.3.0
+	github.com/fatih/color v1.9.0
+	github.com/goccy/go-yaml v1.8.1
+	github.com/jinzhu/copier v0.0.0-20190924061706-b57f9002281a
+	github.com/mattn/go-colorable v0.1.7 // indirect
+	github.com/spf13/cobra v1.1.1
+	github.com/timtadh/data-structures v0.5.3 // indirect
+	github.com/timtadh/lexmachine v0.2.2
+	golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f // indirect
+	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	gopkg.in/op/go-logging.v1 v1.0.0-20160211212156-b2cb9fa56473
-	gopkg.in/yaml.v3 v3.0.1
+	gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776
 )
 
-require (
-	github.com/inconshreveable/mousetrap v1.0.0 // indirect
-	github.com/mattn/go-colorable v0.1.12 // indirect
-	github.com/mattn/go-isatty v0.0.14 // indirect
-	github.com/spf13/pflag v1.0.5 // indirect
-	golang.org/x/sys v0.0.0-20220712014510-0a85c31ab51e // indirect
-	golang.org/x/text v0.3.7 // indirect
-	golang.org/x/xerrors v0.0.0-20220609144429-65e65417b02f // indirect
-)
-
-go 1.18
+go 1.15

go.sum

@@ -1,81 +1,344 @@
-github.com/a8m/envsubst v1.3.0 h1:GmXKmVssap0YtlU3E230W98RWtWCyIZzjtf1apWWyAg=
-github.com/a8m/envsubst v1.3.0/go.mod h1:MVUTQNGQ3tsjOOtKCNd+fl8RzhsXcDvvAEzkhGtlsbY=
-github.com/alecthomas/assert/v2 v2.0.3 h1:WKqJODfOiQG0nEJKFKzDIG3E29CN2/4zR9XGJzKIkbg=
-github.com/alecthomas/participle/v2 v2.0.0-beta.4 h1:ublfGBm+x+p2j7KotHhrUMbKtejT7M0Gv1Mt1u3absw=
-github.com/alecthomas/participle/v2 v2.0.0-beta.4/go.mod h1:RC764t6n4L8D8ITAJv0qdokritYSNR3wV5cVwmIEaMM=
-github.com/alecthomas/repr v0.1.0 h1:ENn2e1+J3k09gyj2shc0dHr/yjaWSHRlrJ4DPMevDqE=
-github.com/alecthomas/repr v0.1.0/go.mod h1:2kn6fqh/zIyPLmm3ugklbEi5hg5wS435eygvNfaDQL8=
-github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
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how-it-works.md

@@ -1,129 +0,0 @@
-# How it works
-
-In `yq` expressions are made up of operators and pipes. A context of nodes is passed through the expression and each operation takes the context as input and returns a new context as output. That output is piped in as input for the next operation in the expression. To begin with, the context is set to the first yaml document of the first yaml file (if processing in sequence using eval).
-
-Lets look at a couple of examples.
-
-## Simple assignment example
-
-Given a document like:
-
-```yaml
-a: cat
-b: dog
-```
-
-with an expression:
-
-```
-.a = .b
-```
-
-Like math expressions - operator precedence is important. 
-
-The `=` operator takes two arguments, a `lhs` expression, which in this case is `.a` and `rhs` expression which is `.b`. 
-
-It pipes the current, lets call it 'root' context through the `lhs` expression of `.a` to return the node 
-
-```yaml
-cat
-```
-
-Sidenote: this node holds not only its value 'cat', but comments and metadata too, including path and parent information.
-
-The `=` operator then pipes the 'root' context through the `rhs` expression of `.b` to return the node
-
-```yaml
-dog
-```
-
-Both sides have now been evaluated, so now the operator copies across the value from the RHS (`.b`) to the the LHS (`.a`), and it returns the now updated context:
-
-```yaml
-a: dog
-b: dog
-```
-
-
-## Complex assignment, operator precedence rules
-
-Just like math expressions - `yq` expressions have an order of precedence. The pipe `|` operator has a low order of precedence, so operators with higher precedence will get evaluated first. 
-
-Most of the time, this is intuitively what you'd want, for instance `.a = "cat" | .b = "dog"` is effectively: `(.a = "cat") | (.b = "dog")`.
-
-However, this is not always the case, particularly if you have a complex LHS or RHS expression, for instance if you want to select particular nodes to update. 
-
-Lets say you had:
-
-```yaml
-- name: bob
-  fruit: apple
-- name: sally
-  fruit: orange
-
-```
-
-Lets say you wanted to update the `sally` entry to have fruit: 'mango'. The _incorrect_ way to do that is:
-`.[] | select(.name == "sally") | .fruit = "mango"`.
-
-Because `|` has a low operator precedence, this will be evaluated (_incorrectly_) as : `(.[]) | (select(.name == "sally")) | (.fruit = "mango")`. What you'll see is only the updated segment returned:
-
-```yaml
-name: sally
-fruit: mango
-```
-
-To properly update this yaml, you will need to use brackets (think BODMAS from maths) and wrap the entire LHS:
-`(.[] | select(.name == "sally") | .fruit) = "mango"`
-
-
-Now that entire LHS expression is passed to the 'assign' (`=`) operator, and the yaml is correctly updated and returned:
-
-
-```yaml
-- name: bob
-  fruit: apple
-- name: sally
-  fruit: mango
-
-```
-
-## Relative update (e.g. `|=`)
-There is another form of the `=` operator which we call the relative form. It's very similar to `=` but with one key difference when evaluating the RHS expression.
-
-In the plain form, we pass in the 'root' level context to the RHS expression. In relative form, we pass in _each result of the LHS_ to the RHS expression. Let's go through an example.
-
-Given a document like:
-
-```yaml
-a: 1
-b: thing
-```
-
-with an expression:
-
-```
-.a |= . + 1
-```
-
-Similar to the `=` operator, `|=` takes two operands, the LHS and RHS.
-
-It pipes the current context (the whole document) through the LHS expression of `.a` to get the node value:
-
-```
-1
-```
-
-Now it pipes _that LHS context_ into the RHS expression `. + 1` (whereas in the `=` plain form it piped the original document context into the RHS) to yield:
-
-
-```
-2
-```
-
-The assignment operator then copies across the value from the RHS to the value on the LHS, and it returns the now updated 'root' context:
-
-```yaml
-a: 2
-b: thing
-```

pkg/yqlib/all_at_once_evaluator.go

@@ -1,88 +1,43 @@
 package yqlib
 
-import (
-	"container/list"
+import "container/list"
 
-	yaml "gopkg.in/yaml.v3"
-)
-
-// A yaml expression evaluator that runs the expression once against all files/nodes in memory.
+/**
+	Loads all yaml documents of all files given into memory, then runs the given expression once.
+**/
 type Evaluator interface {
-	EvaluateFiles(expression string, filenames []string, printer Printer, leadingContentPreProcessing bool, decoder Decoder) error
-
-	// EvaluateNodes takes an expression and one or more yaml nodes, returning a list of matching candidate nodes
-	EvaluateNodes(expression string, nodes ...*yaml.Node) (*list.List, error)
-
-	// EvaluateCandidateNodes takes an expression and list of candidate nodes, returning a list of matching candidate nodes
-	EvaluateCandidateNodes(expression string, inputCandidateNodes *list.List) (*list.List, error)
+	EvaluateFiles(expression string, filenames []string, printer Printer) error
 }
 
 type allAtOnceEvaluator struct {
 	treeNavigator DataTreeNavigator
+	treeCreator   PathTreeCreator
 }
 
 func NewAllAtOnceEvaluator() Evaluator {
-	InitExpressionParser()
-	return &allAtOnceEvaluator{treeNavigator: NewDataTreeNavigator()}
+	return &allAtOnceEvaluator{treeNavigator: NewDataTreeNavigator(), treeCreator: NewPathTreeCreator()}
 }
 
-func (e *allAtOnceEvaluator) EvaluateNodes(expression string, nodes ...*yaml.Node) (*list.List, error) {
-	inputCandidates := list.New()
-	for _, node := range nodes {
-		inputCandidates.PushBack(&CandidateNode{Node: node})
-	}
-	return e.EvaluateCandidateNodes(expression, inputCandidates)
-}
-
-func (e *allAtOnceEvaluator) EvaluateCandidateNodes(expression string, inputCandidates *list.List) (*list.List, error) {
-	node, err := ExpressionParser.ParseExpression(expression)
-	if err != nil {
-		return nil, err
-	}
-	context, err := e.treeNavigator.GetMatchingNodes(Context{MatchingNodes: inputCandidates}, node)
-	if err != nil {
-		return nil, err
-	}
-	return context.MatchingNodes, nil
-}
-
-func (e *allAtOnceEvaluator) EvaluateFiles(expression string, filenames []string, printer Printer, leadingContentPreProcessing bool, decoder Decoder) error {
+func (e *allAtOnceEvaluator) EvaluateFiles(expression string, filenames []string, printer Printer) error {
 	fileIndex := 0
-	firstFileLeadingContent := ""
-
-	var allDocuments = list.New()
+	node, err := treeCreator.ParsePath(expression)
+	if err != nil {
+		return err
+	}
+	var allDocuments *list.List = list.New()
 	for _, filename := range filenames {
-		reader, leadingContent, err := readStream(filename, fileIndex == 0 && leadingContentPreProcessing)
+		reader, err := readStream(filename)
 		if err != nil {
 			return err
 		}
-
-		if fileIndex == 0 {
-			firstFileLeadingContent = leadingContent
-		}
-
-		fileDocuments, err := readDocuments(reader, filename, fileIndex, decoder)
+		fileDocuments, err := readDocuments(reader, filename, fileIndex)
 		if err != nil {
 			return err
 		}
 		allDocuments.PushBackList(fileDocuments)
 		fileIndex = fileIndex + 1
 	}
-
-	if allDocuments.Len() == 0 {
-		candidateNode := &CandidateNode{
-			Document:       0,
-			Filename:       "",
-			Node:           &yaml.Node{Kind: yaml.DocumentNode, Content: []*yaml.Node{{Tag: "!!null", Kind: yaml.ScalarNode}}},
-			FileIndex:      0,
-			LeadingContent: firstFileLeadingContent,
-		}
-		allDocuments.PushBack(candidateNode)
-	} else {
-		allDocuments.Front().Value.(*CandidateNode).LeadingContent = firstFileLeadingContent
-	}
-
-	matches, err := e.EvaluateCandidateNodes(expression, allDocuments)
+	matches, err := treeNavigator.GetMatchingNodes(allDocuments, node)
 	if err != nil {
 		return err
 	}

pkg/yqlib/all_at_once_evaluator_test.go

@@ -1,40 +0,0 @@
-package yqlib
-
-import (
-	"testing"
-
-	"github.com/mikefarah/yq/v4/test"
-)
-
-var evaluateNodesScenario = []expressionScenario{
-	{
-		document:   `a: hello`,
-		expression: `.a`,
-		expected: []string{
-			"D0, P[a], (!!str)::hello\n",
-		},
-	},
-	{
-		document:   `a: hello`,
-		expression: `.`,
-		expected: []string{
-			"D0, P[], (doc)::a: hello\n",
-		},
-	},
-	{
-		document:   `- a: "yes"`,
-		expression: `.[] | has("a")`,
-		expected: []string{
-			"D0, P[0], (!!bool)::true\n",
-		},
-	},
-}
-
-func TestAllAtOnceEvaluateNodes(t *testing.T) {
-	var evaluator = NewAllAtOnceEvaluator()
-	for _, tt := range evaluateNodesScenario {
-		node := test.ParseData(tt.document)
-		list, _ := evaluator.EvaluateNodes(tt.expression, &node)
-		test.AssertResultComplex(t, tt.expected, resultsToString(t, list))
-	}
-}

pkg/yqlib/candidate_node.go

@@ -1,8 +1,8 @@
 package yqlib
 
 import (
-	"container/list"
 	"fmt"
+	"strconv"
 	"strings"
 
 	"github.com/jinzhu/copier"
@@ -10,107 +10,18 @@ import (
 )
 
 type CandidateNode struct {
-	Node   *yaml.Node     // the actual node
-	Parent *CandidateNode // parent node
-	Key    *yaml.Node     // node key, if this is a value from a map (or index in an array)
-
-	LeadingContent  string
-	TrailingContent string
-
+	Node      *yaml.Node    // the actual node
 	Path      []interface{} /// the path we took to get to this node
 	Document  uint          // the document index of this node
 	Filename  string
 	FileIndex int
-	// when performing op against all nodes given, this will treat all the nodes as one
-	// (e.g. top level cross document merge). This property does not propagate to child nodes.
-	EvaluateTogether bool
-	IsMapKey         bool
 }
 
 func (n *CandidateNode) GetKey() string {
-	keyPrefix := ""
-	if n.IsMapKey {
-		keyPrefix = "key-"
-	}
-	return fmt.Sprintf("%v%v - %v", keyPrefix, n.Document, n.Path)
+	return fmt.Sprintf("%v - %v", n.Document, n.Path)
 }
 
-func (n *CandidateNode) GetNiceTag() string {
-	return unwrapDoc(n.Node).Tag
-}
-
-func (n *CandidateNode) GetNicePath() string {
-	if n.Path != nil && len(n.Path) >= 0 {
-		pathStr := make([]string, len(n.Path))
-		for i, v := range n.Path {
-			pathStr[i] = fmt.Sprintf("%v", v)
-		}
-		return strings.Join(pathStr, ".")
-	}
-	return ""
-}
-
-func (n *CandidateNode) AsList() *list.List {
-	elMap := list.New()
-	elMap.PushBack(n)
-	return elMap
-}
-
-func (n *CandidateNode) CreateChildInMap(key *yaml.Node, node *yaml.Node) *CandidateNode {
-	var value interface{}
-	if key != nil {
-		value = key.Value
-	}
-	return &CandidateNode{
-		Node:      node,
-		Path:      n.createChildPath(value),
-		Parent:    n,
-		Key:       key,
-		Document:  n.Document,
-		Filename:  n.Filename,
-		FileIndex: n.FileIndex,
-	}
-}
-
-func (n *CandidateNode) CreateChildInArray(index int, node *yaml.Node) *CandidateNode {
-	return &CandidateNode{
-		Node:      node,
-		Path:      n.createChildPath(index),
-		Parent:    n,
-		Key:       &yaml.Node{Kind: yaml.ScalarNode, Value: fmt.Sprintf("%v", index), Tag: "!!int"},
-		Document:  n.Document,
-		Filename:  n.Filename,
-		FileIndex: n.FileIndex,
-	}
-}
-
-func (n *CandidateNode) CreateReplacement(node *yaml.Node) *CandidateNode {
-	return &CandidateNode{
-		Node:      node,
-		Path:      n.createChildPath(nil),
-		Parent:    n.Parent,
-		Key:       n.Key,
-		IsMapKey:  n.IsMapKey,
-		Document:  n.Document,
-		Filename:  n.Filename,
-		FileIndex: n.FileIndex,
-	}
-}
-
-func (n *CandidateNode) CreateReplacementWithDocWrappers(node *yaml.Node) *CandidateNode {
-	replacement := n.CreateReplacement(node)
-	replacement.LeadingContent = n.LeadingContent
-	replacement.TrailingContent = n.TrailingContent
-	return replacement
-}
-
-func (n *CandidateNode) createChildPath(path interface{}) []interface{} {
-	if path == nil {
-		newPath := make([]interface{}, len(n.Path))
-		copy(newPath, n.Path)
-		return newPath
-	}
-
+func (n *CandidateNode) CreateChildPath(path interface{}) []interface{} {
 	//don't use append as they may actually modify the path of the orignal node!
 	newPath := make([]interface{}, len(n.Path)+1)
 	copy(newPath, n.Path)
@@ -124,30 +35,18 @@ func (n *CandidateNode) Copy() (*CandidateNode, error) {
 	if err != nil {
 		return nil, err
 	}
-	clone.Node = deepClone(n.Node)
 	return clone, nil
 }
 
 // updates this candidate from the given candidate node
-func (n *CandidateNode) UpdateFrom(other *CandidateNode, prefs assignPreferences) {
-
-	// if this is an empty map or empty array, use the style of other node.
-	if (n.Node.Kind != yaml.ScalarNode && len(n.Node.Content) == 0) ||
-		// if the tag has changed (e.g. from str to bool)
-		(guessTagFromCustomType(n.Node) != guessTagFromCustomType(other.Node)) {
-		n.Node.Style = other.Node.Style
-	}
-
-	n.Node.Content = deepCloneContent(other.Node.Content)
-	n.Node.Kind = other.Node.Kind
+func (n *CandidateNode) UpdateFrom(other *CandidateNode) {
+	n.UpdateAttributesFrom(other)
+	n.Node.Content = other.Node.Content
 	n.Node.Value = other.Node.Value
-
-	n.UpdateAttributesFrom(other, prefs)
-
+	n.Node.Alias = other.Node.Alias
 }
 
-func (n *CandidateNode) UpdateAttributesFrom(other *CandidateNode, prefs assignPreferences) {
-	log.Debug("UpdateAttributesFrom: n: %v other: %v", n.GetKey(), other.GetKey())
+func (n *CandidateNode) UpdateAttributesFrom(other *CandidateNode) {
 	if n.Node.Kind != other.Node.Kind {
 		// clear out the contents when switching to a different type
 		// e.g. map to array
@@ -155,35 +54,57 @@ func (n *CandidateNode) UpdateAttributesFrom(other *CandidateNode, prefs assignP
 		n.Node.Value = ""
 	}
 	n.Node.Kind = other.Node.Kind
-
-	// don't clobber custom tags...
-	if strings.HasPrefix(n.Node.Tag, "!!") || n.Node.Tag == "" {
-		n.Node.Tag = other.Node.Tag
-	}
-
-	n.Node.Alias = other.Node.Alias
-
-	if !prefs.DontOverWriteAnchor {
-		n.Node.Anchor = other.Node.Anchor
-	}
+	n.Node.Tag = other.Node.Tag
 
 	// merge will pickup the style of the new thing
 	// when autocreating nodes
-
 	if n.Node.Style == 0 {
 		n.Node.Style = other.Node.Style
 	}
+	n.Node.FootComment = n.Node.FootComment + other.Node.FootComment
+	n.Node.HeadComment = n.Node.HeadComment + other.Node.HeadComment
+	n.Node.LineComment = n.Node.LineComment + other.Node.LineComment
+}
 
-	if other.Node.FootComment != "" {
-		n.Node.FootComment = other.Node.FootComment
-	}
-	if other.TrailingContent != "" {
-		n.TrailingContent = other.TrailingContent
-	}
-	if other.Node.HeadComment != "" {
-		n.Node.HeadComment = other.Node.HeadComment
-	}
-	if other.Node.LineComment != "" {
-		n.Node.LineComment = other.Node.LineComment
+func (n *CandidateNode) PathStackToString() string {
+	return mergePathStackToString(n.Path)
+}
+
+func mergePathStackToString(pathStack []interface{}) string {
+	var sb strings.Builder
+	for index, path := range pathStack {
+		switch path.(type) {
+		case int, int64:
+			// if arrayMergeStrategy == AppendArrayMergeStrategy {
+			// sb.WriteString("[+]")
+			// } else {
+			sb.WriteString(fmt.Sprintf("[%v]", path))
+			// }
+
+		default:
+			s := fmt.Sprintf("%v", path)
+			var _, errParsingInt = strconv.ParseInt(s, 10, 64) // nolint
+
+			hasSpecial := strings.Contains(s, ".") || strings.Contains(s, "[") || strings.Contains(s, "]") || strings.Contains(s, "\"")
+			hasDoubleQuotes := strings.Contains(s, "\"")
+			wrappingCharacterStart := "\""
+			wrappingCharacterEnd := "\""
+			if hasDoubleQuotes {
+				wrappingCharacterStart = "("
+				wrappingCharacterEnd = ")"
+			}
+			if hasSpecial || errParsingInt == nil {
+				sb.WriteString(wrappingCharacterStart)
+			}
+			sb.WriteString(s)
+			if hasSpecial || errParsingInt == nil {
+				sb.WriteString(wrappingCharacterEnd)
+			}
+		}
+
+		if index < len(pathStack)-1 {
+			sb.WriteString(".")
+		}
 	}
+	return sb.String()
 }

pkg/yqlib/color_print.go

@@ -17,8 +17,8 @@ func format(attr color.Attribute) string {
 	return fmt.Sprintf("%s[%dm", escape, attr)
 }
 
-func colorizeAndPrint(yamlBytes []byte, writer io.Writer) error {
-	tokens := lexer.Tokenize(string(yamlBytes))
+func ColorizeAndPrint(bytes []byte, writer io.Writer) error {
+	tokens := lexer.Tokenize(string(bytes))
 	var p printer.Printer
 	p.Bool = func() *printer.Property {
 		return &printer.Property{

pkg/yqlib/compare_operators.go

@@ -1,133 +0,0 @@
-package yqlib
-
-import (
-	"fmt"
-	"strconv"
-	"time"
-
-	yaml "gopkg.in/yaml.v3"
-)
-
-type compareTypePref struct {
-	OrEqual bool
-	Greater bool
-}
-
-func compareOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {
-	log.Debugf("-- compareOperator")
-	prefs := expressionNode.Operation.Preferences.(compareTypePref)
-	return crossFunction(d, context.ReadOnlyClone(), expressionNode, compare(prefs), true)
-}
-
-func compare(prefs compareTypePref) func(d *dataTreeNavigator, context Context, lhs *CandidateNode, rhs *CandidateNode) (*CandidateNode, error) {
-	return func(d *dataTreeNavigator, context Context, lhs *CandidateNode, rhs *CandidateNode) (*CandidateNode, error) {
-		log.Debugf("-- compare cross function")
-		if lhs == nil && rhs == nil {
-			owner := &CandidateNode{}
-			return createBooleanCandidate(owner, prefs.OrEqual), nil
-		} else if lhs == nil {
-			log.Debugf("lhs nil, but rhs is not")
-			return createBooleanCandidate(rhs, false), nil
-		} else if rhs == nil {
-			log.Debugf("rhs nil, but rhs is not")
-			return createBooleanCandidate(lhs, false), nil
-		}
-
-		lhs.Node = unwrapDoc(lhs.Node)
-		rhs.Node = unwrapDoc(rhs.Node)
-
-		switch lhs.Node.Kind {
-		case yaml.MappingNode:
-			return nil, fmt.Errorf("maps not yet supported for comparison")
-		case yaml.SequenceNode:
-			return nil, fmt.Errorf("arrays not yet supported for comparison")
-		default:
-			if rhs.Node.Kind != yaml.ScalarNode {
-				return nil, fmt.Errorf("%v (%v) cannot be subtracted from %v", rhs.Node.Tag, rhs.Path, lhs.Node.Tag)
-			}
-			target := lhs.CreateReplacement(&yaml.Node{})
-			boolV, err := compareScalars(context, prefs, lhs.Node, rhs.Node)
-
-			return createBooleanCandidate(target, boolV), err
-		}
-	}
-}
-
-func compareDateTime(layout string, prefs compareTypePref, lhs *yaml.Node, rhs *yaml.Node) (bool, error) {
-	lhsTime, err := time.Parse(layout, lhs.Value)
-	if err != nil {
-		return false, err
-	}
-
-	rhsTime, err := time.Parse(layout, rhs.Value)
-	if err != nil {
-		return false, err
-	}
-
-	if prefs.OrEqual && lhsTime.Equal(rhsTime) {
-		return true, nil
-	}
-	if prefs.Greater {
-		return lhsTime.After(rhsTime), nil
-	}
-	return lhsTime.Before(rhsTime), nil
-
-}
-
-func compareScalars(context Context, prefs compareTypePref, lhs *yaml.Node, rhs *yaml.Node) (bool, error) {
-	lhsTag := guessTagFromCustomType(lhs)
-	rhsTag := guessTagFromCustomType(rhs)
-
-	isDateTime := lhs.Tag == "!!timestamp"
-	// if the lhs is a string, it might be a timestamp in a custom format.
-	if lhsTag == "!!str" && context.GetDateTimeLayout() != time.RFC3339 {
-		_, err := time.Parse(context.GetDateTimeLayout(), lhs.Value)
-		isDateTime = err == nil
-	}
-	if isDateTime {
-		return compareDateTime(context.GetDateTimeLayout(), prefs, lhs, rhs)
-	} else if lhsTag == "!!int" && rhsTag == "!!int" {
-		_, lhsNum, err := parseInt64(lhs.Value)
-		if err != nil {
-			return false, err
-		}
-		_, rhsNum, err := parseInt64(rhs.Value)
-		if err != nil {
-			return false, err
-		}
-
-		if prefs.OrEqual && lhsNum == rhsNum {
-			return true, nil
-		}
-		if prefs.Greater {
-			return lhsNum > rhsNum, nil
-		}
-		return lhsNum < rhsNum, nil
-	} else if (lhsTag == "!!int" || lhsTag == "!!float") && (rhsTag == "!!int" || rhsTag == "!!float") {
-		lhsNum, err := strconv.ParseFloat(lhs.Value, 64)
-		if err != nil {
-			return false, err
-		}
-		rhsNum, err := strconv.ParseFloat(rhs.Value, 64)
-		if err != nil {
-			return false, err
-		}
-		if prefs.OrEqual && lhsNum == rhsNum {
-			return true, nil
-		}
-		if prefs.Greater {
-			return lhsNum > rhsNum, nil
-		}
-		return lhsNum < rhsNum, nil
-	} else if lhsTag == "!!str" && rhsTag == "!!str" {
-		if prefs.OrEqual && lhs.Value == rhs.Value {
-			return true, nil
-		}
-		if prefs.Greater {
-			return lhs.Value > rhs.Value, nil
-		}
-		return lhs.Value < rhs.Value, nil
-	}
-
-	return false, fmt.Errorf("%v not yet supported for comparison", lhs.Tag)
-}

pkg/yqlib/compare_operators_test.go

@@ -1,371 +0,0 @@
-package yqlib
-
-import (
-	"testing"
-)
-
-var compareOperatorScenarios = []expressionScenario{
-	// ints, not equal
-	{
-		description: "Compare numbers (>)",
-		document:    "a: 5\nb: 4",
-		expression:  ".a > .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 5\nb: 4",
-		expression: ".a < .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:     true,
-		description: "Compare integers (>=)",
-		document:    "a: 5\nb: 4",
-		expression:  ".a >= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 5\nb: 4",
-		expression: ".a <= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-
-	// ints, equal
-	{
-		skipDoc:     true,
-		description: "Compare equal numbers (>)",
-		document:    "a: 5\nb: 5",
-		expression:  ".a > .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 5\nb: 5",
-		expression: ".a < .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		description: "Compare equal numbers (>=)",
-		document:    "a: 5\nb: 5",
-		expression:  ".a >= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 5\nb: 5",
-		expression: ".a <= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-
-	// floats, not equal
-	{
-		skipDoc:    true,
-		document:   "a: 5.2\nb: 4.1",
-		expression: ".a > .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 5.2\nb: 4.1",
-		expression: ".a < .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 5.2\nb: 4.1",
-		expression: ".a >= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 5.5\nb: 4.1",
-		expression: ".a <= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-
-	// floats, equal
-	{
-		skipDoc:    true,
-		document:   "a: 5.5\nb: 5.5",
-		expression: ".a > .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 5.5\nb: 5.5",
-		expression: ".a < .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 5.1\nb: 5.1",
-		expression: ".a >= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 5.1\nb: 5.1",
-		expression: ".a <= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-
-	// strings, not equal
-	{
-		description:    "Compare strings",
-		subdescription: "Compares strings by their bytecode.",
-		document:       "a: zoo\nb: apple",
-		expression:     ".a > .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: zoo\nb: apple",
-		expression: ".a < .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: zoo\nb: apple",
-		expression: ".a >= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: zoo\nb: apple",
-		expression: ".a <= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-
-	// strings, equal
-	{
-		skipDoc:    true,
-		document:   "a: cat\nb: cat",
-		expression: ".a > .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: cat\nb: cat",
-		expression: ".a < .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: cat\nb: cat",
-		expression: ".a >= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: cat\nb: cat",
-		expression: ".a <= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-
-	// datetime, not equal
-	{
-		description:    "Compare date times",
-		subdescription: "You can compare date times. Assumes RFC3339 date time format, see [date-time operators](https://mikefarah.gitbook.io/yq/operators/date-time-operators) for more information.",
-		document:       "a: 2021-01-01T03:10:00Z\nb: 2020-01-01T03:10:00Z",
-		expression:     ".a > .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 2021-01-01T03:10:00Z\nb: 2020-01-01T03:10:00Z",
-		expression: ".a < .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 2021-01-01T03:10:00Z\nb: 2020-01-01T03:10:00Z",
-		expression: ".a >= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 2021-01-01T03:10:00Z\nb: 2020-01-01T03:10:00Z",
-		expression: ".a <= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-
-	// datetime, equal
-	{
-		skipDoc:    true,
-		document:   "a: 2021-01-01T03:10:00Z\nb: 2021-01-01T03:10:00Z",
-		expression: ".a > .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 2021-01-01T03:10:00Z\nb: 2021-01-01T03:10:00Z",
-		expression: ".a < .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 2021-01-01T03:10:00Z\nb: 2021-01-01T03:10:00Z",
-		expression: ".a >= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   "a: 2021-01-01T03:10:00Z\nb: 2021-01-01T03:10:00Z",
-		expression: ".a <= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::true\n",
-		},
-	},
-	// both null
-	{
-		description: "Both sides are null: > is false",
-		expression:  ".a > .b",
-		expected: []string{
-			"D0, P[], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		expression: ".a < .b",
-		expected: []string{
-			"D0, P[], (!!bool)::false\n",
-		},
-	},
-	{
-		description: "Both sides are null: >= is true",
-		expression:  ".a >= .b",
-		expected: []string{
-			"D0, P[], (!!bool)::true\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		expression: ".a <= .b",
-		expected: []string{
-			"D0, P[], (!!bool)::true\n",
-		},
-	},
-
-	// one null
-	{
-		skipDoc:     true,
-		description: "One side is null: > is false",
-		document:    `a: 5`,
-		expression:  ".a > .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   `a: 5`,
-		expression: ".a < .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:     true,
-		description: "One side is null: >= is false",
-		document:    `a: 5`,
-		expression:  ".a >= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   `a: 5`,
-		expression: ".a <= .b",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   `a: 5`,
-		expression: ".b <= .a",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-	{
-		skipDoc:    true,
-		document:   `a: 5`,
-		expression: ".b < .a",
-		expected: []string{
-			"D0, P[a], (!!bool)::false\n",
-		},
-	},
-}
-
-func TestCompareOperatorScenarios(t *testing.T) {
-	for _, tt := range compareOperatorScenarios {
-		testScenario(t, &tt)
-	}
-	documentOperatorScenarios(t, "compare", compareOperatorScenarios)
-}

pkg/yqlib/context.go

@@ -1,122 +0,0 @@
-package yqlib
-
-import (
-	"container/list"
-	"fmt"
-	"time"
-
-	"github.com/jinzhu/copier"
-	logging "gopkg.in/op/go-logging.v1"
-)
-
-type Context struct {
-	MatchingNodes  *list.List
-	Variables      map[string]*list.List
-	DontAutoCreate bool
-	datetimeLayout string
-}
-
-func (n *Context) SingleReadonlyChildContext(candidate *CandidateNode) Context {
-	list := list.New()
-	list.PushBack(candidate)
-	newContext := n.ChildContext(list)
-	newContext.DontAutoCreate = true
-	return newContext
-}
-
-func (n *Context) SingleChildContext(candidate *CandidateNode) Context {
-	list := list.New()
-	list.PushBack(candidate)
-	return n.ChildContext(list)
-}
-
-func (n *Context) SetDateTimeLayout(newDateTimeLayout string) {
-	n.datetimeLayout = newDateTimeLayout
-}
-
-func (n *Context) GetDateTimeLayout() string {
-	if n.datetimeLayout != "" {
-		return n.datetimeLayout
-	}
-	return time.RFC3339
-}
-
-func (n *Context) GetVariable(name string) *list.List {
-	if n.Variables == nil {
-		return nil
-	}
-	return n.Variables[name]
-}
-
-func (n *Context) SetVariable(name string, value *list.List) {
-	if n.Variables == nil {
-		n.Variables = make(map[string]*list.List)
-	}
-	n.Variables[name] = value
-}
-
-func (n *Context) ChildContext(results *list.List) Context {
-	clone := Context{DontAutoCreate: n.DontAutoCreate, datetimeLayout: n.datetimeLayout}
-	clone.Variables = make(map[string]*list.List)
-	if len(n.Variables) > 0 {
-		err := copier.Copy(&clone.Variables, n.Variables)
-		if err != nil {
-			log.Error("Error cloning context :(")
-			panic(err)
-		}
-	}
-	clone.MatchingNodes = results
-	return clone
-}
-
-func (n *Context) ToString() string {
-	if !log.IsEnabledFor(logging.DEBUG) {
-		return ""
-	}
-	result := fmt.Sprintf("Context\nDontAutoCreate: %v\n", n.DontAutoCreate)
-	return result + NodesToString(n.MatchingNodes)
-}
-
-func (n *Context) DeepClone() Context {
-	clone := Context{}
-	err := copier.Copy(&clone, n)
-	// copier doesn't do lists properly for some reason
-	clone.MatchingNodes = list.New()
-	for el := n.MatchingNodes.Front(); el != nil; el = el.Next() {
-		clonedNode, err := el.Value.(*CandidateNode).Copy()
-		if err != nil {
-			log.Error("Error cloning context :(")
-			panic(err)
-		}
-		clone.MatchingNodes.PushBack(clonedNode)
-	}
-
-	if err != nil {
-		log.Error("Error cloning context :(")
-		panic(err)
-	}
-	return clone
-}
-
-func (n *Context) Clone() Context {
-	clone := Context{}
-	err := copier.Copy(&clone, n)
-
-	if err != nil {
-		log.Error("Error cloning context :(")
-		panic(err)
-	}
-	return clone
-}
-
-func (n *Context) ReadOnlyClone() Context {
-	clone := n.Clone()
-	clone.DontAutoCreate = true
-	return clone
-}
-
-func (n *Context) WritableClone() Context {
-	clone := n.Clone()
-	clone.DontAutoCreate = false
-	return clone
-}

pkg/yqlib/csv_test.go

@@ -1,273 +0,0 @@
-package yqlib
-
-import (
-	"bufio"
-	"fmt"
-	"testing"
-
-	"github.com/mikefarah/yq/v4/test"
-)
-
-const csvSimple = `name,numberOfCats,likesApples,height
-Gary,1,true,168.8
-Samantha's Rabbit,2,false,-188.8
-`
-
-const expectedUpdatedSimpleCsv = `name,numberOfCats,likesApples,height
-Gary,3,true,168.8
-Samantha's Rabbit,2,false,-188.8
-`
-
-const csvSimpleShort = `Name,Number of Cats
-Gary,1
-Samantha's Rabbit,2
-`
-
-const tsvSimple = `name	numberOfCats	likesApples	height
-Gary	1	true	168.8
-Samantha's Rabbit	2	false	-188.8
-`
-
-const expectedYamlFromCSV = `- name: Gary
-  numberOfCats: 1
-  likesApples: true
-  height: 168.8
-- name: Samantha's Rabbit
-  numberOfCats: 2
-  likesApples: false
-  height: -188.8
-`
-
-const expectedYamlFromCSVMissingData = `- name: Gary
-  numberOfCats: 1
-  height: 168.8
-- name: Samantha's Rabbit
-  height: -188.8
-  likesApples: false
-`
-
-const csvSimpleMissingData = `name,numberOfCats,height
-Gary,1,168.8
-Samantha's Rabbit,,-188.8
-`
-
-const csvTestSimpleYaml = `- [i, like, csv]
-- [because, excel, is, cool]`
-
-const expectedSimpleCsv = `i,like,csv
-because,excel,is,cool
-`
-
-const tsvTestExpectedSimpleCsv = `i	like	csv
-because	excel	is	cool
-`
-
-var csvScenarios = []formatScenario{
-	{
-		description:  "Encode CSV simple",
-		input:        csvTestSimpleYaml,
-		expected:     expectedSimpleCsv,
-		scenarioType: "encode-csv",
-	},
-	{
-		description:  "Encode TSV simple",
-		input:        csvTestSimpleYaml,
-		expected:     tsvTestExpectedSimpleCsv,
-		scenarioType: "encode-tsv",
-	},
-	{
-		description:  "Encode Empty",
-		skipDoc:      true,
-		input:        `[]`,
-		expected:     "",
-		scenarioType: "encode-csv",
-	},
-	{
-		description:  "Comma in value",
-		skipDoc:      true,
-		input:        `["comma, in, value", things]`,
-		expected:     "\"comma, in, value\",things\n",
-		scenarioType: "encode-csv",
-	},
-	{
-		description:  "Encode array of objects to csv",
-		input:        expectedYamlFromCSV,
-		expected:     csvSimple,
-		scenarioType: "encode-csv",
-	},
-	{
-		description:    "Encode array of objects to custom csv format",
-		subdescription: "Add the header row manually, then the we convert each object into an array of values - resulting in an array of arrays. Pick the columns and call the header whatever you like.",
-		input:          expectedYamlFromCSV,
-		expected:       csvSimpleShort,
-		expression:     `[["Name", "Number of Cats"]] +  [.[] | [.name, .numberOfCats ]]`,
-		scenarioType:   "encode-csv",
-	},
-	{
-		description:    "Encode array of objects to csv - missing fields behaviour",
-		subdescription: "First entry is used to determine the headers, and it is missing 'likesApples', so it is not included in the csv. Second entry does not have 'numberOfCats' so that is blank",
-		input:          expectedYamlFromCSVMissingData,
-		expected:       csvSimpleMissingData,
-		scenarioType:   "encode-csv",
-	},
-	{
-		description:    "Parse CSV into an array of objects",
-		subdescription: "First row is assumed to be the header row.",
-		input:          csvSimple,
-		expected:       expectedYamlFromCSV,
-		scenarioType:   "decode-csv-object",
-	},
-	{
-		description:    "Parse TSV into an array of objects",
-		subdescription: "First row is assumed to be the header row.",
-		input:          tsvSimple,
-		expected:       expectedYamlFromCSV,
-		scenarioType:   "decode-tsv-object",
-	},
-	{
-		description:  "Round trip",
-		input:        csvSimple,
-		expected:     expectedUpdatedSimpleCsv,
-		expression:   `(.[] | select(.name == "Gary") | .numberOfCats) = 3`,
-		scenarioType: "roundtrip-csv",
-	},
-}
-
-func testCSVScenario(t *testing.T, s formatScenario) {
-	switch s.scenarioType {
-	case "encode-csv":
-		test.AssertResultWithContext(t, s.expected, processFormatScenario(s, NewYamlDecoder(), NewCsvEncoder(',')), s.description)
-	case "encode-tsv":
-		test.AssertResultWithContext(t, s.expected, processFormatScenario(s, NewYamlDecoder(), NewCsvEncoder('\t')), s.description)
-	case "decode-csv-object":
-		test.AssertResultWithContext(t, s.expected, processFormatScenario(s, NewCSVObjectDecoder(','), NewYamlEncoder(2, false, true, true)), s.description)
-	case "decode-tsv-object":
-		test.AssertResultWithContext(t, s.expected, processFormatScenario(s, NewCSVObjectDecoder('\t'), NewYamlEncoder(2, false, true, true)), s.description)
-	case "roundtrip-csv":
-		test.AssertResultWithContext(t, s.expected, processFormatScenario(s, NewCSVObjectDecoder(','), NewCsvEncoder(',')), s.description)
-	default:
-		panic(fmt.Sprintf("unhandled scenario type %q", s.scenarioType))
-	}
-}
-
-func documentCSVDecodeObjectScenario(t *testing.T, w *bufio.Writer, s formatScenario, formatType string) {
-	writeOrPanic(w, fmt.Sprintf("## %v\n", s.description))
-
-	if s.subdescription != "" {
-		writeOrPanic(w, s.subdescription)
-		writeOrPanic(w, "\n\n")
-	}
-
-	writeOrPanic(w, fmt.Sprintf("Given a sample.%v file of:\n", formatType))
-	writeOrPanic(w, fmt.Sprintf("```%v\n%v\n```\n", formatType, s.input))
-
-	writeOrPanic(w, "then\n")
-	writeOrPanic(w, fmt.Sprintf("```bash\nyq -p=%v sample.%v\n```\n", formatType, formatType))
-	writeOrPanic(w, "will output\n")
-
-	separator := ','
-	if formatType == "tsv" {
-		separator = '\t'
-	}
-
-	writeOrPanic(w, fmt.Sprintf("```yaml\n%v```\n\n",
-		processFormatScenario(s, NewCSVObjectDecoder(separator), NewYamlEncoder(s.indent, false, true, true))),
-	)
-}
-
-func documentCSVEncodeScenario(w *bufio.Writer, s formatScenario, formatType string) {
-	writeOrPanic(w, fmt.Sprintf("## %v\n", s.description))
-
-	if s.subdescription != "" {
-		writeOrPanic(w, s.subdescription)
-		writeOrPanic(w, "\n\n")
-	}
-
-	writeOrPanic(w, "Given a sample.yml file of:\n")
-	writeOrPanic(w, fmt.Sprintf("```yaml\n%v\n```\n", s.input))
-
-	writeOrPanic(w, "then\n")
-
-	expression := s.expression
-
-	if expression != "" {
-		writeOrPanic(w, fmt.Sprintf("```bash\nyq -o=%v '%v' sample.yml\n```\n", formatType, expression))
-	} else {
-		writeOrPanic(w, fmt.Sprintf("```bash\nyq -o=%v sample.yml\n```\n", formatType))
-	}
-	writeOrPanic(w, "will output\n")
-
-	separator := ','
-	if formatType == "tsv" {
-		separator = '\t'
-	}
-
-	writeOrPanic(w, fmt.Sprintf("```%v\n%v```\n\n", formatType,
-		processFormatScenario(s, NewYamlDecoder(), NewCsvEncoder(separator))),
-	)
-}
-
-func documentCSVRoundTripScenario(w *bufio.Writer, s formatScenario, formatType string) {
-	writeOrPanic(w, fmt.Sprintf("## %v\n", s.description))
-
-	if s.subdescription != "" {
-		writeOrPanic(w, s.subdescription)
-		writeOrPanic(w, "\n\n")
-	}
-
-	writeOrPanic(w, fmt.Sprintf("Given a sample.%v file of:\n", formatType))
-	writeOrPanic(w, fmt.Sprintf("```%v\n%v\n```\n", formatType, s.input))
-
-	writeOrPanic(w, "then\n")
-
-	expression := s.expression
-
-	if expression != "" {
-		writeOrPanic(w, fmt.Sprintf("```bash\nyq -p=%v -o=%v '%v' sample.%v\n```\n", formatType, formatType, expression, formatType))
-	} else {
-		writeOrPanic(w, fmt.Sprintf("```bash\nyq -p=%v -o=%v sample.%v\n```\n", formatType, formatType, formatType))
-	}
-	writeOrPanic(w, "will output\n")
-
-	separator := ','
-	if formatType == "tsv" {
-		separator = '\t'
-	}
-
-	writeOrPanic(w, fmt.Sprintf("```%v\n%v```\n\n", formatType,
-		processFormatScenario(s, NewCSVObjectDecoder(separator), NewCsvEncoder(separator))),
-	)
-}
-
-func documentCSVScenario(t *testing.T, w *bufio.Writer, i interface{}) {
-	s := i.(formatScenario)
-	if s.skipDoc {
-		return
-	}
-	switch s.scenarioType {
-	case "encode-csv":
-		documentCSVEncodeScenario(w, s, "csv")
-	case "encode-tsv":
-		documentCSVEncodeScenario(w, s, "tsv")
-	case "decode-csv-object":
-		documentCSVDecodeObjectScenario(t, w, s, "csv")
-	case "decode-tsv-object":
-		documentCSVDecodeObjectScenario(t, w, s, "tsv")
-	case "roundtrip-csv":
-		documentCSVRoundTripScenario(w, s, "csv")
-
-	default:
-		panic(fmt.Sprintf("unhandled scenario type %q", s.scenarioType))
-	}
-}
-
-func TestCSVScenarios(t *testing.T) {
-	for _, tt := range csvScenarios {
-		testCSVScenario(t, tt)
-	}
-	genericScenarios := make([]interface{}, len(csvScenarios))
-	for i, s := range csvScenarios {
-		genericScenarios[i] = s
-	}
-	documentScenarios(t, "usage", "csv-tsv", genericScenarios, documentCSVScenario)
-}

pkg/yqlib/data_tree_navigator.go

@@ -3,14 +3,16 @@ package yqlib
 import (
 	"fmt"
 
+	"container/list"
+
 	logging "gopkg.in/op/go-logging.v1"
 )
 
 type DataTreeNavigator interface {
-	// given the context and a expressionNode,
-	// this will process the against the given expressionNode and return
-	// a new context of matching candidates
-	GetMatchingNodes(context Context, expressionNode *ExpressionNode) (Context, error)
+	// given a list of CandidateEntities and a pathNode,
+	// this will process the list against the given pathNode and return
+	// a new list of matching candidates
+	GetMatchingNodes(matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error)
 }
 
 type dataTreeNavigator struct {
@@ -20,22 +22,22 @@ func NewDataTreeNavigator() DataTreeNavigator {
 	return &dataTreeNavigator{}
 }
 
-func (d *dataTreeNavigator) GetMatchingNodes(context Context, expressionNode *ExpressionNode) (Context, error) {
-	if expressionNode == nil {
+func (d *dataTreeNavigator) GetMatchingNodes(matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error) {
+	if pathNode == nil {
 		log.Debugf("getMatchingNodes - nothing to do")
-		return context, nil
+		return matchingNodes, nil
 	}
-	log.Debugf("Processing Op: %v", expressionNode.Operation.toString())
+	log.Debugf("Processing Op: %v", pathNode.Operation.toString())
 	if log.IsEnabledFor(logging.DEBUG) {
-		for el := context.MatchingNodes.Front(); el != nil; el = el.Next() {
+		for el := matchingNodes.Front(); el != nil; el = el.Next() {
 			log.Debug(NodeToString(el.Value.(*CandidateNode)))
 		}
 	}
 	log.Debug(">>")
-	handler := expressionNode.Operation.OperationType.Handler
+	handler := pathNode.Operation.OperationType.Handler
 	if handler != nil {
-		return handler(d, context, expressionNode)
+		return handler(d, matchingNodes, pathNode)
 	}
-	return Context{}, fmt.Errorf("Unknown operator %v", expressionNode.Operation.OperationType)
+	return nil, fmt.Errorf("Unknown operator %v", pathNode.Operation.OperationType)
 
 }

pkg/yqlib/decoder.go

@@ -1,44 +0,0 @@
-package yqlib
-
-import (
-	"fmt"
-	"io"
-
-	yaml "gopkg.in/yaml.v3"
-)
-
-type InputFormat uint
-
-const (
-	YamlInputFormat = 1 << iota
-	XMLInputFormat
-	PropertiesInputFormat
-	Base64InputFormat
-	JsonInputFormat
-	CSVObjectInputFormat
-	TSVObjectInputFormat
-)
-
-type Decoder interface {
-	Init(reader io.Reader)
-	Decode(node *yaml.Node) error
-}
-
-func InputFormatFromString(format string) (InputFormat, error) {
-	switch format {
-	case "yaml", "y":
-		return YamlInputFormat, nil
-	case "xml", "x":
-		return XMLInputFormat, nil
-	case "props", "p":
-		return PropertiesInputFormat, nil
-	case "json", "ndjson", "j":
-		return JsonInputFormat, nil
-	case "csv", "c":
-		return CSVObjectInputFormat, nil
-	case "tsv", "t":
-		return TSVObjectInputFormat, nil
-	default:
-		return 0, fmt.Errorf("unknown format '%v' please use [yaml|xml|props]", format)
-	}
-}

pkg/yqlib/decoder_base64.go

@@ -1,53 +0,0 @@
-package yqlib
-
-import (
-	"bytes"
-	"encoding/base64"
-	"io"
-
-	yaml "gopkg.in/yaml.v3"
-)
-
-type base64Decoder struct {
-	reader       io.Reader
-	finished     bool
-	readAnything bool
-	encoding     base64.Encoding
-}
-
-func NewBase64Decoder() Decoder {
-	return &base64Decoder{finished: false, encoding: *base64.StdEncoding}
-}
-
-func (dec *base64Decoder) Init(reader io.Reader) {
-	dec.reader = reader
-	dec.readAnything = false
-	dec.finished = false
-}
-
-func (dec *base64Decoder) Decode(rootYamlNode *yaml.Node) error {
-	if dec.finished {
-		return io.EOF
-	}
-	base64Reader := base64.NewDecoder(&dec.encoding, dec.reader)
-	buf := new(bytes.Buffer)
-
-	if _, err := buf.ReadFrom(base64Reader); err != nil {
-		return err
-	}
-	if buf.Len() == 0 {
-		dec.finished = true
-
-		// if we've read _only_ an empty string, lets return that
-		// otherwise if we've already read some bytes, and now we get
-		// an empty string, then we are done.
-		if dec.readAnything {
-			return io.EOF
-		}
-	}
-	dec.readAnything = true
-	rootYamlNode.Kind = yaml.ScalarNode
-	rootYamlNode.Tag = "!!str"
-	rootYamlNode.Value = buf.String()
-	return nil
-}

pkg/yqlib/decoder_csv_object.go

@@ -1,77 +0,0 @@
-package yqlib
-
-import (
-	"encoding/csv"
-	"errors"
-	"io"
-
-	yaml "gopkg.in/yaml.v3"
-)
-
-type csvObjectDecoder struct {
-	separator rune
-	reader    csv.Reader
-	finished  bool
-}
-
-func NewCSVObjectDecoder(separator rune) Decoder {
-	return &csvObjectDecoder{separator: separator}
-}
-
-func (dec *csvObjectDecoder) Init(reader io.Reader) {
-	dec.reader = *csv.NewReader(reader)
-	dec.reader.Comma = dec.separator
-	dec.finished = false
-}
-
-func (dec *csvObjectDecoder) convertToYamlNode(content string) *yaml.Node {
-	node, err := parseSnippet(content)
-	if err != nil {
-		return createScalarNode(content, content)
-	}
-	return node
-}
-
-func (dec *csvObjectDecoder) createObject(headerRow []string, contentRow []string) *yaml.Node {
-	objectNode := &yaml.Node{Kind: yaml.MappingNode, Tag: "!!map"}
-
-	for i, header := range headerRow {
-		objectNode.Content = append(
-			objectNode.Content,
-			createScalarNode(header, header),
-			dec.convertToYamlNode(contentRow[i]))
-	}
-	return objectNode
-}
-
-func (dec *csvObjectDecoder) Decode(rootYamlNode *yaml.Node) error {
-	if dec.finished {
-		return io.EOF
-	}
-	headerRow, err := dec.reader.Read()
-	log.Debugf(": headerRow%v", headerRow)
-	if err != nil {
-		return err
-	}
-
-	rootArray := &yaml.Node{Kind: yaml.SequenceNode, Tag: "!!seq"}
-
-	contentRow, err := dec.reader.Read()
-
-	for err == nil && len(contentRow) > 0 {
-		log.Debugf("Adding contentRow: %v", contentRow)
-		rootArray.Content = append(rootArray.Content, dec.createObject(headerRow, contentRow))
-		contentRow, err = dec.reader.Read()
-		log.Debugf("Read next contentRow: %v, %v", contentRow, err)
-	}
-	if !errors.Is(err, io.EOF) {
-		return err
-	}
-
-	log.Debugf("finished, contentRow%v", contentRow)
-	log.Debugf("err: %v", err)
-
-	rootYamlNode.Kind = yaml.DocumentNode
-	rootYamlNode.Content = []*yaml.Node{rootArray}
-	return nil
-}

pkg/yqlib/decoder_json.go

@@ -1,85 +0,0 @@
-package yqlib
-
-import (
-	"fmt"
-	"io"
-
-	"github.com/goccy/go-json"
-	yaml "gopkg.in/yaml.v3"
-)
-
-type jsonDecoder struct {
-	decoder json.Decoder
-}
-
-func NewJSONDecoder() Decoder {
-	return &jsonDecoder{}
-}
-
-func (dec *jsonDecoder) Init(reader io.Reader) {
-	dec.decoder = *json.NewDecoder(reader)
-}
-
-func (dec *jsonDecoder) Decode(rootYamlNode *yaml.Node) error {
-
-	var dataBucket interface{}
-	log.Debug("going to decode")
-	err := dec.decoder.Decode(&dataBucket)
-	if err != nil {
-		return err
-	}
-	node, err := dec.convertToYamlNode(dataBucket)
-
-	if err != nil {
-		return err
-	}
-	rootYamlNode.Kind = yaml.DocumentNode
-	rootYamlNode.Content = []*yaml.Node{node}
-	return nil
-}
-
-func (dec *jsonDecoder) convertToYamlNode(data interface{}) (*yaml.Node, error) {
-	switch data := data.(type) {
-	case nil:
-		return createScalarNode(nil, "null"), nil
-	case float64, float32:
-		// json decoder returns ints as float.
-		return parseSnippet(fmt.Sprintf("%v", data))
-	case int, int64, int32, string, bool:
-		return createScalarNode(data, fmt.Sprintf("%v", data)), nil
-	case map[string]interface{}:
-		return dec.parseMap(data)
-	case []interface{}:
-		return dec.parseArray(data)
-	default:
-		return nil, fmt.Errorf("unrecognised type :(")
-	}
-}
-
-func (dec *jsonDecoder) parseMap(dataMap map[string]interface{}) (*yaml.Node, error) {
-
-	var yamlMap = &yaml.Node{Kind: yaml.MappingNode}
-
-	for key, value := range dataMap {
-		yamlValue, err := dec.convertToYamlNode(value)
-		if err != nil {
-			return nil, err
-		}
-		yamlMap.Content = append(yamlMap.Content, createScalarNode(key, fmt.Sprintf("%v", key)), yamlValue)
-	}
-	return yamlMap, nil
-}
-
-func (dec *jsonDecoder) parseArray(dataArray []interface{}) (*yaml.Node, error) {
-
-	var yamlMap = &yaml.Node{Kind: yaml.SequenceNode}
-
-	for _, value := range dataArray {
-		yamlValue, err := dec.convertToYamlNode(value)
-		if err != nil {
-			return nil, err
-		}
-		yamlMap.Content = append(yamlMap.Content, yamlValue)
-	}
-	return yamlMap, nil
-}

pkg/yqlib/decoder_properties.go

@@ -1,122 +0,0 @@
-package yqlib
-
-import (
-	"bytes"
-	"io"
-	"strconv"
-	"strings"
-
-	"github.com/magiconair/properties"
-	"gopkg.in/yaml.v3"
-)
-
-type propertiesDecoder struct {
-	reader   io.Reader
-	finished bool
-	d        DataTreeNavigator
-}
-
-func NewPropertiesDecoder() Decoder {
-	return &propertiesDecoder{d: NewDataTreeNavigator(), finished: false}
-}
-
-func (dec *propertiesDecoder) Init(reader io.Reader) {
-	dec.reader = reader
-	dec.finished = false
-}
-
-func parsePropKey(key string) []interface{} {
-	pathStrArray := strings.Split(key, ".")
-	path := make([]interface{}, len(pathStrArray))
-	for i, pathStr := range pathStrArray {
-		num, err := strconv.ParseInt(pathStr, 10, 32)
-		if err == nil {
-			path[i] = num
-		} else {
-			path[i] = pathStr
-		}
-	}
-	return path
-}
-
-func (dec *propertiesDecoder) processComment(c string) string {
-	if c == "" {
-		return ""
-	}
-	return "# " + c
-}
-
-func (dec *propertiesDecoder) applyProperty(properties *properties.Properties, context Context, key string) error {
-	value, _ := properties.Get(key)
-	path := parsePropKey(key)
-
-	rhsNode := &yaml.Node{
-		Value:       value,
-		Tag:         "!!str",
-		Kind:        yaml.ScalarNode,
-		LineComment: dec.processComment(properties.GetComment(key)),
-	}
-
-	rhsNode.Tag = guessTagFromCustomType(rhsNode)
-
-	rhsCandidateNode := &CandidateNode{
-		Path: path,
-		Node: rhsNode,
-	}
-
-	assignmentOp := &Operation{OperationType: assignOpType, Preferences: assignPreferences{}}
-
-	rhsOp := &Operation{OperationType: valueOpType, CandidateNode: rhsCandidateNode}
-
-	assignmentOpNode := &ExpressionNode{
-		Operation: assignmentOp,
-		LHS:       createTraversalTree(path, traversePreferences{}, false),
-		RHS:       &ExpressionNode{Operation: rhsOp},
-	}
-
-	_, err := dec.d.GetMatchingNodes(context, assignmentOpNode)
-	return err
-}
-
-func (dec *propertiesDecoder) Decode(rootYamlNode *yaml.Node) error {
-	if dec.finished {
-		return io.EOF
-	}
-	buf := new(bytes.Buffer)
-
-	if _, err := buf.ReadFrom(dec.reader); err != nil {
-		return err
-	}
-	if buf.Len() == 0 {
-		dec.finished = true
-		return io.EOF
-	}
-	properties, err := properties.LoadString(buf.String())
-	if err != nil {
-		return err
-	}
-	properties.DisableExpansion = true
-
-	rootMap := &CandidateNode{
-		Node: &yaml.Node{
-			Kind: yaml.MappingNode,
-			Tag:  "!!map",
-		},
-	}
-
-	context := Context{}
-	context = context.SingleChildContext(rootMap)
-
-	for _, key := range properties.Keys() {
-		if err := dec.applyProperty(properties, context, key); err != nil {
-			return err
-		}
-
-	}
-
-	rootYamlNode.Kind = yaml.DocumentNode
-	rootYamlNode.Content = []*yaml.Node{rootMap.Node}
-	dec.finished = true
-	return nil
-
-}

pkg/yqlib/decoder_test.go

@@ -1,60 +0,0 @@
-package yqlib
-
-import (
-	"bufio"
-	"bytes"
-	"strings"
-)
-
-type formatScenario struct {
-	input          string
-	indent         int
-	expression     string
-	expected       string
-	description    string
-	subdescription string
-	skipDoc        bool
-	scenarioType   string
-}
-
-func processFormatScenario(s formatScenario, decoder Decoder, encoder Encoder) string {
-
-	var output bytes.Buffer
-	writer := bufio.NewWriter(&output)
-
-	if decoder == nil {
-		decoder = NewYamlDecoder()
-	}
-
-	inputs, err := readDocuments(strings.NewReader(s.input), "sample.yml", 0, decoder)
-	if err != nil {
-		panic(err)
-	}
-
-	expression := s.expression
-	if expression == "" {
-		expression = "."
-	}
-
-	exp, err := getExpressionParser().ParseExpression(expression)
-
-	if err != nil {
-		panic(err)
-	}
-
-	context, err := NewDataTreeNavigator().GetMatchingNodes(Context{MatchingNodes: inputs}, exp)
-
-	if err != nil {
-		panic(err)
-	}
-
-	printer := NewPrinter(encoder, NewSinglePrinterWriter(writer))
-	err = printer.PrintResults(context.MatchingNodes)
-	if err != nil {
-		panic(err)
-	}
-	writer.Flush()
-
-	return output.String()
-
-}

pkg/yqlib/decoder_xml.go

@@ -1,348 +0,0 @@
-package yqlib
-
-import (
-	"encoding/xml"
-	"errors"
-	"io"
-	"strings"
-	"unicode"
-
-	"golang.org/x/net/html/charset"
-	yaml "gopkg.in/yaml.v3"
-)
-
-type xmlDecoder struct {
-	reader          io.Reader
-	readAnything    bool
-	attributePrefix string
-	contentName     string
-	strictMode      bool
-	keepNamespace   bool
-	useRawToken     bool
-	finished        bool
-}
-
-func NewXMLDecoder(attributePrefix string, contentName string, strictMode bool, keepNamespace bool, useRawToken bool) Decoder {
-	if contentName == "" {
-		contentName = "content"
-	}
-	return &xmlDecoder{
-		attributePrefix: attributePrefix,
-		contentName:     contentName,
-		finished:        false,
-		strictMode:      strictMode,
-		keepNamespace:   keepNamespace,
-		useRawToken:     useRawToken,
-	}
-}
-
-func (dec *xmlDecoder) Init(reader io.Reader) {
-	dec.reader = reader
-	dec.readAnything = false
-	dec.finished = false
-}
-
-func (dec *xmlDecoder) createSequence(nodes []*xmlNode) (*yaml.Node, error) {
-	yamlNode := &yaml.Node{Kind: yaml.SequenceNode, Tag: "!!seq"}
-	for _, child := range nodes {
-		yamlChild, err := dec.convertToYamlNode(child)
-		if err != nil {
-			return nil, err
-		}
-		yamlNode.Content = append(yamlNode.Content, yamlChild)
-	}
-
-	return yamlNode, nil
-}
-
-func (dec *xmlDecoder) processComment(c string) string {
-	if c == "" {
-		return ""
-	}
-	return "#" + strings.TrimRight(c, " ")
-}
-
-func (dec *xmlDecoder) createMap(n *xmlNode) (*yaml.Node, error) {
-	log.Debug("createMap: headC: %v, footC: %v", n.HeadComment, n.FootComment)
-	yamlNode := &yaml.Node{Kind: yaml.MappingNode, Tag: "!!map"}
-
-	if len(n.Data) > 0 {
-		label := dec.contentName
-		labelNode := createScalarNode(label, label)
-		labelNode.HeadComment = dec.processComment(n.HeadComment)
-		labelNode.FootComment = dec.processComment(n.FootComment)
-		yamlNode.Content = append(yamlNode.Content, labelNode, createScalarNode(n.Data, n.Data))
-	}
-
-	for i, keyValuePair := range n.Children {
-		label := keyValuePair.K
-		children := keyValuePair.V
-		labelNode := createScalarNode(label, label)
-		var valueNode *yaml.Node
-		var err error
-
-		if i == 0 {
-			labelNode.HeadComment = dec.processComment(n.HeadComment)
-
-		}
-
-		// if i == len(n.Children)-1 {
-		labelNode.FootComment = dec.processComment(keyValuePair.FootComment)
-		// }
-
-		log.Debug("len of children in %v is %v", label, len(children))
-		if len(children) > 1 {
-			valueNode, err = dec.createSequence(children)
-			if err != nil {
-				return nil, err
-			}
-		} else {
-			// comment hack for maps of scalars
-			// if the value is a scalar, the head comment of the scalar needs to go on the key?
-			// add tests for <z/> as well as multiple <ds> of inputXmlWithComments > yaml
-			if len(children[0].Children) == 0 && children[0].HeadComment != "" {
-				labelNode.HeadComment = labelNode.HeadComment + "\n" + strings.TrimSpace(children[0].HeadComment)
-				children[0].HeadComment = ""
-			}
-			valueNode, err = dec.convertToYamlNode(children[0])
-			if err != nil {
-				return nil, err
-			}
-		}
-		yamlNode.Content = append(yamlNode.Content, labelNode, valueNode)
-	}
-
-	return yamlNode, nil
-}
-
-func (dec *xmlDecoder) convertToYamlNode(n *xmlNode) (*yaml.Node, error) {
-	if len(n.Children) > 0 {
-		return dec.createMap(n)
-	}
-	scalar := createScalarNode(n.Data, n.Data)
-	if n.Data == "" {
-		scalar = createScalarNode(nil, "")
-	}
-	log.Debug("scalar headC: %v, footC: %v", n.HeadComment, n.FootComment)
-	scalar.HeadComment = dec.processComment(n.HeadComment)
-	scalar.LineComment = dec.processComment(n.LineComment)
-	scalar.FootComment = dec.processComment(n.FootComment)
-
-	return scalar, nil
-}
-
-func (dec *xmlDecoder) Decode(rootYamlNode *yaml.Node) error {
-	if dec.finished {
-		return io.EOF
-	}
-	root := &xmlNode{}
-	// cant use xj - it doesn't keep map order.
-	err := dec.decodeXML(root)
-
-	if err != nil {
-		return err
-	}
-	firstNode, err := dec.convertToYamlNode(root)
-
-	if err != nil {
-		return err
-	} else if firstNode.Tag == "!!null" {
-		dec.finished = true
-		if dec.readAnything {
-			return io.EOF
-		}
-	}
-	dec.readAnything = true
-	rootYamlNode.Kind = yaml.DocumentNode
-	rootYamlNode.Content = []*yaml.Node{firstNode}
-	dec.finished = true
-	return nil
-}
-
-type xmlNode struct {
-	Children    []*xmlChildrenKv
-	HeadComment string
-	FootComment string
-	LineComment string
-	Data        string
-}
-
-type xmlChildrenKv struct {
-	K           string
-	V           []*xmlNode
-	FootComment string
-}
-
-// AddChild appends a node to the list of children
-func (n *xmlNode) AddChild(s string, c *xmlNode) {
-
-	if n.Children == nil {
-		n.Children = make([]*xmlChildrenKv, 0)
-	}
-	log.Debug("looking for %s", s)
-	// see if we can find an existing entry to add to
-	for _, childEntry := range n.Children {
-		if childEntry.K == s {
-			log.Debug("found it, appending an entry%s", s)
-			childEntry.V = append(childEntry.V, c)
-			log.Debug("yay len of children in %v is %v", s, len(childEntry.V))
-			return
-		}
-	}
-	log.Debug("not there, making a new one %s", s)
-	n.Children = append(n.Children, &xmlChildrenKv{K: s, V: []*xmlNode{c}})
-}
-
-type element struct {
-	parent *element
-	n      *xmlNode
-	label  string
-	state  string
-}
-
-// this code is heavily based on https://github.com/basgys/goxml2json
-// main changes are to decode into a structure that preserves the original order
-// of the map keys.
-func (dec *xmlDecoder) decodeXML(root *xmlNode) error {
-	xmlDec := xml.NewDecoder(dec.reader)
-	xmlDec.Strict = dec.strictMode
-	// That will convert the charset if the provided XML is non-UTF-8
-	xmlDec.CharsetReader = charset.NewReaderLabel
-
-	// Create first element from the root node
-	elem := &element{
-		parent: nil,
-		n:      root,
-	}
-
-	getToken := func() (xml.Token, error) {
-		if dec.useRawToken {
-			return xmlDec.RawToken()
-		}
-		return xmlDec.Token()
-	}
-
-	for {
-		t, e := getToken()
-		if e != nil && !errors.Is(e, io.EOF) {
-			return e
-		}
-		if t == nil {
-			break
-		}
-
-		switch se := t.(type) {
-		case xml.StartElement:
-			log.Debug("start element %v", se.Name.Local)
-			elem.state = "started"
-			// Build new a new current element and link it to its parent
-			elem = &element{
-				parent: elem,
-				n:      &xmlNode{},
-				label:  se.Name.Local,
-			}
-
-			// Extract attributes as children
-			for _, a := range se.Attr {
-				if dec.keepNamespace {
-					if a.Name.Space != "" {
-						a.Name.Local = a.Name.Space + ":" + a.Name.Local
-					}
-				}
-				elem.n.AddChild(dec.attributePrefix+a.Name.Local, &xmlNode{Data: a.Value})
-			}
-		case xml.CharData:
-			// Extract XML data (if any)
-			elem.n.Data = trimNonGraphic(string(se))
-			if elem.n.Data != "" {
-				elem.state = "chardata"
-				log.Debug("chardata [%v] for %v", elem.n.Data, elem.label)
-			}
-		case xml.EndElement:
-			log.Debug("end element %v", elem.label)
-			elem.state = "finished"
-			// And add it to its parent list
-			if elem.parent != nil {
-				elem.parent.n.AddChild(elem.label, elem.n)
-			}
-
-			// Then change the current element to its parent
-			elem = elem.parent
-		case xml.Comment:
-
-			commentStr := string(xml.CharData(se))
-			if elem.state == "started" {
-				applyFootComment(elem, commentStr)
-
-			} else if elem.state == "chardata" {
-				log.Debug("got a line comment for (%v) %v: [%v]", elem.state, elem.label, commentStr)
-				elem.n.LineComment = joinFilter([]string{elem.n.LineComment, commentStr})
-			} else {
-				log.Debug("got a head comment for (%v) %v: [%v]", elem.state, elem.label, commentStr)
-				elem.n.HeadComment = joinFilter([]string{elem.n.HeadComment, commentStr})
-			}
-
-		}
-	}
-
-	return nil
-}
-
-func applyFootComment(elem *element, commentStr string) {
-
-	// first lets try to put the comment on the last child
-	if len(elem.n.Children) > 0 {
-		lastChildIndex := len(elem.n.Children) - 1
-		childKv := elem.n.Children[lastChildIndex]
-		log.Debug("got a foot comment for %v: [%v]", childKv.K, commentStr)
-		childKv.FootComment = joinFilter([]string{elem.n.FootComment, commentStr})
-	} else {
-		log.Debug("got a foot comment for %v: [%v]", elem.label, commentStr)
-		elem.n.FootComment = joinFilter([]string{elem.n.FootComment, commentStr})
-	}
-}
-
-func joinFilter(rawStrings []string) string {
-	stringsToJoin := make([]string, 0)
-	for _, str := range rawStrings {
-		if str != "" {
-			stringsToJoin = append(stringsToJoin, str)
-		}
-	}
-	return strings.Join(stringsToJoin, " ")
-}
-
-// trimNonGraphic returns a slice of the string s, with all leading and trailing
-// non graphic characters and spaces removed.
-//
-// Graphic characters include letters, marks, numbers, punctuation, symbols,
-// and spaces, from categories L, M, N, P, S, Zs.
-// Spacing characters are set by category Z and property Pattern_White_Space.
-func trimNonGraphic(s string) string {
-	if s == "" {
-		return s
-	}
-
-	var first *int
-	var last int
-	for i, r := range []rune(s) {
-		if !unicode.IsGraphic(r) || unicode.IsSpace(r) {
-			continue
-		}
-
-		if first == nil {
-			f := i // copy i
-			first = &f
-			last = i
-		} else {
-			last = i
-		}
-	}
-
-	// If first is nil, it means there are no graphic characters
-	if first == nil {
-		return ""
-	}
-
-	return string([]rune(s)[*first : last+1])
-}

pkg/yqlib/decoder_yaml.go

@@ -1,23 +0,0 @@
-package yqlib
-
-import (
-	"io"
-
-	yaml "gopkg.in/yaml.v3"
-)
-
-type yamlDecoder struct {
-	decoder yaml.Decoder
-}
-
-func NewYamlDecoder() Decoder {
-	return &yamlDecoder{}
-}
-
-func (dec *yamlDecoder) Init(reader io.Reader) {
-	dec.decoder = *yaml.NewDecoder(reader)
-}
-
-func (dec *yamlDecoder) Decode(rootYamlNode *yaml.Node) error {
-	return dec.decoder.Decode(rootYamlNode)
-}

pkg/yqlib/doc/Add.md

@@ -0,0 +1,133 @@
+Add behaves differently according to the type of the LHS:
+- arrays: concatenate
+- number scalars: arithmetic addition (soon)
+- string scalars: concatenate (soon)
+
+Use `+=` as append assign for things like increment. `.a += .x` is equivalent to running `.a |= . + .x`.
+
+## Concatenate and assign arrays
+Given a sample.yml file of:
+```yaml
+a:
+  val: thing
+  b:
+    - cat
+    - dog
+```
+then
+```bash
+yq eval '.a.b += ["cow"]' sample.yml
+```
+will output
+```yaml
+a:
+  val: thing
+  b:
+    - cat
+    - dog
+    - cow
+```
+
+## Concatenate arrays
+Given a sample.yml file of:
+```yaml
+a:
+  - 1
+  - 2
+b:
+  - 3
+  - 4
+```
+then
+```bash
+yq eval '.a + .b' sample.yml
+```
+will output
+```yaml
+- 1
+- 2
+- 3
+- 4
+```
+
+## Concatenate null to array
+Given a sample.yml file of:
+```yaml
+a:
+  - 1
+  - 2
+```
+then
+```bash
+yq eval '.a + null' sample.yml
+```
+will output
+```yaml
+- 1
+- 2
+```
+
+## Add object to array
+Given a sample.yml file of:
+```yaml
+a:
+  - 1
+  - 2
+c:
+  cat: meow
+```
+then
+```bash
+yq eval '.a + .c' sample.yml
+```
+will output
+```yaml
+- 1
+- 2
+- cat: meow
+```
+
+## Add string to array
+Given a sample.yml file of:
+```yaml
+a:
+  - 1
+  - 2
+```
+then
+```bash
+yq eval '.a + "hello"' sample.yml
+```
+will output
+```yaml
+- 1
+- 2
+- hello
+```
+
+## Update array (append)
+Given a sample.yml file of:
+```yaml
+a:
+  - 1
+  - 2
+b:
+  - 3
+  - 4
+```
+then
+```bash
+yq eval '.a = .a + .b' sample.yml
+```
+will output
+```yaml
+a:
+  - 1
+  - 2
+  - 3
+  - 4
+b:
+  - 3
+  - 4
+```
+

pkg/yqlib/doc/Alternative (Default value).md

@@ -1,13 +1,5 @@
-# Alternative (Default value)
-
 This operator is used to provide alternative (or default) values when a particular expression is either null or false.
 
-{% hint style="warning" %}
-Note that versions prior to 4.18 require the 'eval/e' command to be specified. 
-
-`yq e <exp> <file>`
-{% endhint %}
-
 ## LHS is defined
 Given a sample.yml file of:
 ```yaml
@@ -15,7 +7,7 @@ a: bridge
 ```
 then
 ```bash
-yq '.a // "hello"' sample.yml
+yq eval '.a // "hello"' sample.yml
 ```
 will output
 ```yaml
@@ -29,7 +21,7 @@ Given a sample.yml file of:
 ```
 then
 ```bash
-yq '.a // "hello"' sample.yml
+yq eval '.a // "hello"' sample.yml
 ```
 will output
 ```yaml
@@ -43,7 +35,7 @@ a: ~
 ```
 then
 ```bash
-yq '.a // "hello"' sample.yml
+yq eval '.a // "hello"' sample.yml
 ```
 will output
 ```yaml
@@ -57,7 +49,7 @@ a: false
 ```
 then
 ```bash
-yq '.a // "hello"' sample.yml
+yq eval '.a // "hello"' sample.yml
 ```
 will output
 ```yaml
@@ -72,7 +64,7 @@ b: cat
 ```
 then
 ```bash
-yq '.a // .b' sample.yml
+yq eval '.a // .b' sample.yml
 ```
 will output
 ```yaml

pkg/yqlib/doc/Anchor and Alias Operators.md

@@ -0,0 +1,161 @@
+Use the `alias` and `anchor` operators to read and write yaml aliases and anchors. The `explode` operator normalises a yaml file (dereference aliases and remove anchor names).
+
+`yq` supports merge aliases (like `<<: *blah`) however this is no longer in the standard yaml spec (1.2) and so `yq` will automatically add the `!!merge` tag to these nodes as it is effectively a custom tag.
+
+
+## Get anchor
+Given a sample.yml file of:
+```yaml
+a: &billyBob cat
+```
+then
+```bash
+yq eval '.a | anchor' sample.yml
+```
+will output
+```yaml
+billyBob
+```
+
+## Set anchor
+Given a sample.yml file of:
+```yaml
+a: cat
+```
+then
+```bash
+yq eval '.a anchor = "foobar"' sample.yml
+```
+will output
+```yaml
+a: &foobar cat
+```
+
+## Get alias
+Given a sample.yml file of:
+```yaml
+b: &billyBob meow
+a: *billyBob
+```
+then
+```bash
+yq eval '.a | alias' sample.yml
+```
+will output
+```yaml
+billyBob
+```
+
+## Set alias
+Given a sample.yml file of:
+```yaml
+b: &meow purr
+a: cat
+```
+then
+```bash
+yq eval '.a alias = "meow"' sample.yml
+```
+will output
+```yaml
+b: &meow purr
+a: *meow
+```
+
+## Explode alias and anchor
+Given a sample.yml file of:
+```yaml
+f:
+  a: &a cat
+  b: *a
+```
+then
+```bash
+yq eval 'explode(.f)' sample.yml
+```
+will output
+```yaml
+f:
+  a: cat
+  b: cat
+```
+
+## Explode with no aliases or anchors
+Given a sample.yml file of:
+```yaml
+a: mike
+```
+then
+```bash
+yq eval 'explode(.a)' sample.yml
+```
+will output
+```yaml
+a: mike
+```
+
+## Explode with alias keys
+Given a sample.yml file of:
+```yaml
+f:
+  a: &a cat
+  *a: b
+```
+then
+```bash
+yq eval 'explode(.f)' sample.yml
+```
+will output
+```yaml
+f:
+  a: cat
+  cat: b
+```
+
+## Explode with merge anchors
+Given a sample.yml file of:
+```yaml
+foo: &foo
+  a: foo_a
+  thing: foo_thing
+  c: foo_c
+bar: &bar
+  b: bar_b
+  thing: bar_thing
+  c: bar_c
+foobarList:
+  b: foobarList_b
+  !!merge <<:
+    - *foo
+    - *bar
+  c: foobarList_c
+foobar:
+  c: foobar_c
+  !!merge <<: *foo
+  thing: foobar_thing
+```
+then
+```bash
+yq eval 'explode(.)' sample.yml
+```
+will output
+```yaml
+foo:
+  a: foo_a
+  thing: foo_thing
+  c: foo_c
+bar:
+  b: bar_b
+  thing: bar_thing
+  c: bar_c
+foobarList:
+  b: bar_b
+  a: foo_a
+  thing: bar_thing
+  c: foobarList_c
+foobar:
+  c: foo_c
+  a: foo_a
+  thing: foobar_thing
+```
+

pkg/yqlib/doc/Assign.md

@@ -1,5 +1,3 @@
-# Assign (Update)
-
 This operator is used to update node values. It can be used in either the:
 
 ### plain form: `=`
@@ -7,16 +5,10 @@ Which will assign the LHS node values to the RHS node values. The RHS expression
 
 ### relative form: `|=`
 This will do a similar thing to the plain form, however, the RHS expression is run against _the LHS nodes_. This is useful for updating values based on old values, e.g. increment.
-{% hint style="warning" %}
-Note that versions prior to 4.18 require the 'eval/e' command to be specified. 
-
-`yq e <exp> <file>`
-{% endhint %}
-
 ## Create yaml file
 Running
 ```bash
-yq --null-input '.a.b = "cat" | .x = "frog"'
+yq eval --null-input '.a.b = "cat" | .x = "frog"'
 ```
 will output
 ```yaml
@@ -34,7 +26,7 @@ a:
 ```
 then
 ```bash
-yq '.a |= .b' sample.yml
+yq eval '.a |= .b' sample.yml
 ```
 will output
 ```yaml
@@ -42,45 +34,6 @@ a:
   g: foof
 ```
 
-## Double elements in an array
-Given a sample.yml file of:
-```yaml
-- 1
-- 2
-- 3
-```
-then
-```bash
-yq '.[] |= . * 2' sample.yml
-```
-will output
-```yaml
-- 2
-- 4
-- 6
-```
-
-## Update node from another file
-Note this will also work when the second file is a scalar (string/number)
-
-Given a sample.yml file of:
-```yaml
-a: apples
-```
-And another sample another.yml file of:
-```yaml
-b: bob
-```
-then
-```bash
-yq eval-all 'select(fileIndex==0).a = select(fileIndex==1) | select(fileIndex==0)' sample.yml another.yml
-```
-will output
-```yaml
-a:
-  b: bob
-```
-
 ## Update node to be the sibling value
 Given a sample.yml file of:
 ```yaml
@@ -90,7 +43,7 @@ b: sibling
 ```
 then
 ```bash
-yq '.a = .b' sample.yml
+yq eval '.a = .b' sample.yml
 ```
 will output
 ```yaml
@@ -107,13 +60,13 @@ c: fieldC
 ```
 then
 ```bash
-yq '(.a, .c) = "potato"' sample.yml
+yq eval '(.a, .c) |= "potatoe"' sample.yml
 ```
 will output
 ```yaml
-a: potato
+a: potatoe
 b: fieldB
-c: potato
+c: potatoe
 ```
 
 ## Update string value
@@ -124,7 +77,7 @@ a:
 ```
 then
 ```bash
-yq '.a.b = "frog"' sample.yml
+yq eval '.a.b = "frog"' sample.yml
 ```
 will output
 ```yaml
@@ -142,7 +95,7 @@ a:
 ```
 then
 ```bash
-yq '.a.b |= "frog"' sample.yml
+yq eval '.a.b |= "frog"' sample.yml
 ```
 will output
 ```yaml
@@ -150,9 +103,7 @@ a:
   b: frog
 ```
 
-## Update deeply selected results
-Note that the LHS is wrapped in brackets! This is to ensure we don't first filter out the yaml and then update the snippet.
-
+## Update selected results
 Given a sample.yml file of:
 ```yaml
 a:
@@ -161,7 +112,7 @@ a:
 ```
 then
 ```bash
-yq '(.a[] | select(. == "apple")) = "frog"' sample.yml
+yq eval '(.a[] | select(. == "apple")) = "frog"' sample.yml
 ```
 will output
 ```yaml
@@ -179,7 +130,7 @@ Given a sample.yml file of:
 ```
 then
 ```bash
-yq '(.[] | select(. == "*andy")) = "bogs"' sample.yml
+yq eval '(.[] | select(. == "*andy")) = "bogs"' sample.yml
 ```
 will output
 ```yaml
@@ -195,28 +146,11 @@ Given a sample.yml file of:
 ```
 then
 ```bash
-yq '.a.b |= "bogs"' sample.yml
+yq eval '.a.b |= "bogs"' sample.yml
 ```
 will output
 ```yaml
-a:
-  b: bogs
-```
-
-## Update node value that has an anchor
-Anchor will remaple
-
-Given a sample.yml file of:
-```yaml
-a: &cool cat
-```
-then
-```bash
-yq '.a = "dog"' sample.yml
-```
-will output
-```yaml
-a: &cool dog
+{a: {b: bogs}}
 ```
 
 ## Update empty object and array
@@ -226,12 +160,10 @@ Given a sample.yml file of:
 ```
 then
 ```bash
-yq '.a.b.[0] |= "bogs"' sample.yml
+yq eval '.a.b.[0] |= "bogs"' sample.yml
 ```
 will output
 ```yaml
-a:
-  b:
-    - bogs
+{a: {b: [bogs]}}
 ```
 

pkg/yqlib/doc/Boolean Operators.md

@@ -0,0 +1,113 @@
+The `or` and `and` operators take two parameters and return a boolean result. `not` flips a boolean from true to false, or vice versa. These are most commonly used with the `select` operator to filter particular nodes.
+## OR example
+Running
+```bash
+yq eval --null-input 'true or false'
+```
+will output
+```yaml
+true
+```
+
+## AND example
+Running
+```bash
+yq eval --null-input 'true and false'
+```
+will output
+```yaml
+false
+```
+
+## Matching nodes with select, equals and or
+Given a sample.yml file of:
+```yaml
+- a: bird
+  b: dog
+- a: frog
+  b: bird
+- a: cat
+  b: fly
+```
+then
+```bash
+yq eval '[.[] | select(.a == "cat" or .b == "dog")]' sample.yml
+```
+will output
+```yaml
+- a: bird
+  b: dog
+- a: cat
+  b: fly
+```
+
+## Not true is false
+Running
+```bash
+yq eval --null-input 'true | not'
+```
+will output
+```yaml
+false
+```
+
+## Not false is true
+Running
+```bash
+yq eval --null-input 'false | not'
+```
+will output
+```yaml
+true
+```
+
+## String values considered to be true
+Running
+```bash
+yq eval --null-input '"cat" | not'
+```
+will output
+```yaml
+false
+```
+
+## Empty string value considered to be true
+Running
+```bash
+yq eval --null-input '"" | not'
+```
+will output
+```yaml
+false
+```
+
+## Numbers are considered to be true
+Running
+```bash
+yq eval --null-input '1 | not'
+```
+will output
+```yaml
+false
+```
+
+## Zero is considered to be true
+Running
+```bash
+yq eval --null-input '0 | not'
+```
+will output
+```yaml
+false
+```
+
+## Null is considered to be false
+Running
+```bash
+yq eval --null-input '~ | not'
+```
+will output
+```yaml
+true
+```
+

pkg/yqlib/doc/Collect into Array.md

@@ -3,16 +3,10 @@
 This creates an array using the expression between the square brackets.
 
 
-{% hint style="warning" %}
-Note that versions prior to 4.18 require the 'eval/e' command to be specified. 
-
-`yq e <exp> <file>`
-{% endhint %}
-
 ## Collect empty
 Running
 ```bash
-yq --null-input '[]'
+yq eval --null-input '[]'
 ```
 will output
 ```yaml
@@ -22,7 +16,7 @@ will output
 ## Collect single
 Running
 ```bash
-yq --null-input '["cat"]'
+yq eval --null-input '["cat"]'
 ```
 will output
 ```yaml
@@ -37,7 +31,7 @@ b: dog
 ```
 then
 ```bash
-yq '[.a, .b]' sample.yml
+yq eval '[.a, .b]' sample.yml
 ```
 will output
 ```yaml

pkg/yqlib/doc/Collect into Object.md

@@ -1,17 +1,8 @@
-# Create, Collect into Object
-
 This is used to construct objects (or maps). This can be used against existing yaml, or to create fresh yaml documents.
-
-{% hint style="warning" %}
-Note that versions prior to 4.18 require the 'eval/e' command to be specified. 
-
-`yq e <exp> <file>`
-{% endhint %}
-
 ## Collect empty object
 Running
 ```bash
-yq --null-input '{}'
+yq eval --null-input '{}'
 ```
 will output
 ```yaml
@@ -25,7 +16,7 @@ name: Mike
 ```
 then
 ```bash
-yq '{"wrap": .}' sample.yml
+yq eval '{"wrap": .}' sample.yml
 ```
 will output
 ```yaml
@@ -43,7 +34,7 @@ pets:
 ```
 then
 ```bash
-yq '{.name: .pets.[]}' sample.yml
+yq eval '{.name: .pets.[]}' sample.yml
 ```
 will output
 ```yaml
@@ -66,7 +57,7 @@ pets:
 ```
 then
 ```bash
-yq '{.name: .pets.[]}' sample.yml
+yq eval '{.name: .pets.[]}' sample.yml
 ```
 will output
 ```yaml
@@ -79,23 +70,10 @@ Rosey: sheep
 ## Creating yaml from scratch
 Running
 ```bash
-yq --null-input '{"wrap": "frog"}'
+yq eval --null-input '{"wrap": "frog"}'
 ```
 will output
 ```yaml
 wrap: frog
 ```
 
-## Creating yaml from scratch with multiple objects
-Running
-```bash
-yq --null-input '(.a.b = "foo") | (.d.e = "bar")'
-```
-will output
-```yaml
-a:
-  b: foo
-d:
-  e: bar
-```
-

pkg/yqlib/doc/Comment Operators.md

@@ -0,0 +1,119 @@
+Use these comment operators to set or retrieve comments.
+## Set line comment
+Given a sample.yml file of:
+```yaml
+a: cat
+```
+then
+```bash
+yq eval '.a lineComment="single"' sample.yml
+```
+will output
+```yaml
+a: cat # single
+```
+
+## Set head comment
+Given a sample.yml file of:
+```yaml
+a: cat
+```
+then
+```bash
+yq eval '. headComment="single"' sample.yml
+```
+will output
+```yaml
+# single
+
+a: cat
+```
+
+## Set foot comment, using an expression
+Given a sample.yml file of:
+```yaml
+a: cat
+```
+then
+```bash
+yq eval '. footComment=.a' sample.yml
+```
+will output
+```yaml
+a: cat
+
+# cat
+```
+
+## Remove comment
+Given a sample.yml file of:
+```yaml
+a: cat # comment
+b: dog # leave this
+```
+then
+```bash
+yq eval '.a lineComment=""' sample.yml
+```
+will output
+```yaml
+a: cat
+b: dog # leave this
+```
+
+## Remove all comments
+Given a sample.yml file of:
+```yaml
+a: cat # comment
+```
+then
+```bash
+yq eval '.. comments=""' sample.yml
+```
+will output
+```yaml
+a: cat
+```
+
+## Get line comment
+Given a sample.yml file of:
+```yaml
+a: cat # meow
+```
+then
+```bash
+yq eval '.a | lineComment' sample.yml
+```
+will output
+```yaml
+meow
+```
+
+## Get head comment
+Given a sample.yml file of:
+```yaml
+a: cat # meow
+```
+then
+```bash
+yq eval '. | headComment' sample.yml
+```
+will output
+```yaml
+
+```
+
+## Get foot comment
+Given a sample.yml file of:
+```yaml
+a: cat # meow
+```
+then
+```bash
+yq eval '. | footComment' sample.yml
+```
+will output
+```yaml
+
+```
+

pkg/yqlib/doc/Delete.md

@@ -1,13 +1,4 @@
-# Delete
-
 Deletes matching entries in maps or arrays.
-
-{% hint style="warning" %}
-Note that versions prior to 4.18 require the 'eval/e' command to be specified. 
-
-`yq e <exp> <file>`
-{% endhint %}
-
 ## Delete entry in map
 Given a sample.yml file of:
 ```yaml
@@ -16,7 +7,7 @@ b: dog
 ```
 then
 ```bash
-yq 'del(.b)' sample.yml
+yq eval 'del(.b)' sample.yml
 ```
 will output
 ```yaml
@@ -32,7 +23,7 @@ a:
 ```
 then
 ```bash
-yq 'del(.a.a1)' sample.yml
+yq eval 'del(.a.a1)' sample.yml
 ```
 will output
 ```yaml
@@ -49,7 +40,7 @@ Given a sample.yml file of:
 ```
 then
 ```bash
-yq 'del(.[1])' sample.yml
+yq eval 'del(.[1])' sample.yml
 ```
 will output
 ```yaml
@@ -65,7 +56,7 @@ Given a sample.yml file of:
 ```
 then
 ```bash
-yq 'del(.[0].a)' sample.yml
+yq eval 'del(.[0].a)' sample.yml
 ```
 will output
 ```yaml
@@ -80,7 +71,7 @@ b: dog
 ```
 then
 ```bash
-yq 'del(.c)' sample.yml
+yq eval 'del(.c)' sample.yml
 ```
 will output
 ```yaml
@@ -97,30 +88,10 @@ c: bat
 ```
 then
 ```bash
-yq 'del( .[] | select(. == "*at") )' sample.yml
+yq eval 'del( .[] | select(. == "*at") )' sample.yml
 ```
 will output
 ```yaml
 b: dog
 ```
 
-## Recursively delete matching keys
-Given a sample.yml file of:
-```yaml
-a:
-  name: frog
-  b:
-    name: blog
-    age: 12
-```
-then
-```bash
-yq 'del(.. | select(has("name")).name)' sample.yml
-```
-will output
-```yaml
-a:
-  b:
-    age: 12
-```
-

pkg/yqlib/doc/Document Index.md

@@ -0,0 +1,54 @@
+Use the `documentIndex` operator to select nodes of a particular document.
+## Retrieve a document index
+Given a sample.yml file of:
+```yaml
+a: cat
+---
+a: frog
+```
+then
+```bash
+yq eval '.a | documentIndex' sample.yml
+```
+will output
+```yaml
+0
+---
+1
+```
+
+## Filter by document index
+Given a sample.yml file of:
+```yaml
+a: cat
+---
+a: frog
+```
+then
+```bash
+yq eval 'select(. | documentIndex == 1)' sample.yml
+```
+will output
+```yaml
+a: frog
+```
+
+## Print Document Index with matches
+Given a sample.yml file of:
+```yaml
+a: cat
+---
+a: frog
+```
+then
+```bash
+yq eval '.a | ({"match": ., "doc": (. | documentIndex)})' sample.yml
+```
+will output
+```yaml
+match: cat
+doc: 0
+match: frog
+doc: 1
+```
+

pkg/yqlib/doc/Equals.md

@@ -0,0 +1,59 @@
+This is a boolean operator that will return ```true``` if the LHS is equal to the RHS and ``false`` otherwise.
+
+```
+.a == .b
+```
+
+It is most often used with the select operator to find particular nodes:
+
+```
+select(.a == .b)
+```
+
+
+## Match string
+Given a sample.yml file of:
+```yaml
+- cat
+- goat
+- dog
+```
+then
+```bash
+yq eval '.[] | (. == "*at")' sample.yml
+```
+will output
+```yaml
+true
+true
+false
+```
+
+## Match number
+Given a sample.yml file of:
+```yaml
+- 3
+- 4
+- 5
+```
+then
+```bash
+yq eval '.[] | (. == 4)' sample.yml
+```
+will output
+```yaml
+false
+true
+false
+```
+
+## Match nulls
+Running
+```bash
+yq eval --null-input 'null == ~'
+```
+will output
+```yaml
+true
+```
+

pkg/yqlib/doc/File Operators.md

@@ -0,0 +1,35 @@
+File operators are most often used with merge when needing to merge specific files together. Note that when doing this, you will need to use `eval-all` to ensure all yaml documents are loaded into memory before performing the merge (as opposed to `eval` which runs the expression once per document).
+
+## Merging files
+Note the use of eval-all to ensure all documents are loaded into memory.
+```bash
+yq eval-all 'select(fileIndex == 0) * select(filename == "file2.yaml")' file1.yaml file2.yaml
+```
+## Get filename
+Given a sample.yml file of:
+```yaml
+a: cat
+```
+then
+```bash
+yq eval 'filename' sample.yml
+```
+will output
+```yaml
+sample.yaml
+```
+
+## Get file index
+Given a sample.yml file of:
+```yaml
+a: cat
+```
+then
+```bash
+yq eval 'fileIndex' sample.yml
+```
+will output
+```yaml
+0
+```
+

pkg/yqlib/doc/Has.md

@@ -0,0 +1,44 @@
+This is operation that returns true if the key exists in a map (or index in an array), false otherwise.
+## Has map key
+Given a sample.yml file of:
+```yaml
+- a: yes
+- a: ~
+- a:
+- b: nope
+```
+then
+```bash
+yq eval '.[] | has("a")' sample.yml
+```
+will output
+```yaml
+true
+true
+true
+false
+```
+
+## Has array index
+Given a sample.yml file of:
+```yaml
+- []
+- [1]
+- [1, 2]
+- [1, null]
+- [1, 2, 3]
+
+```
+then
+```bash
+yq eval '.[] | has(1)' sample.yml
+```
+will output
+```yaml
+false
+false
+true
+true
+true
+```
+

pkg/yqlib/doc/Length.md

@@ -1,13 +1,5 @@
-# Length
-
 Returns the lengths of the nodes. Length is defined according to the type of the node.
 
-{% hint style="warning" %}
-Note that versions prior to 4.18 require the 'eval/e' command to be specified. 
-
-`yq e <exp> <file>`
-{% endhint %}
-
 ## String length
 returns length of string
 
@@ -17,27 +9,13 @@ a: cat
 ```
 then
 ```bash
-yq '.a | length' sample.yml
+yq eval '.a | length' sample.yml
 ```
 will output
 ```yaml
 3
 ```
 
-## null length
-Given a sample.yml file of:
-```yaml
-a: null
-```
-then
-```bash
-yq '.a | length' sample.yml
-```
-will output
-```yaml
-0
-```
-
 ## Map length
 returns number of entries
 
@@ -48,7 +26,7 @@ c: dog
 ```
 then
 ```bash
-yq 'length' sample.yml
+yq eval 'length' sample.yml
 ```
 will output
 ```yaml
@@ -67,7 +45,7 @@ Given a sample.yml file of:
 ```
 then
 ```bash
-yq 'length' sample.yml
+yq eval 'length' sample.yml
 ```
 will output
 ```yaml

pkg/yqlib/doc/Multiply.md

@@ -0,0 +1,238 @@
+Like the multiple operator in `jq`, depending on the operands, this multiply operator will do different things. Currently only objects are supported, which have the effect of merging the RHS into the LHS.
+
+Upcoming versions of `yq` will add support for other types of multiplication (numbers, strings).
+
+To concatenate when merging objects, use the `*+` form (see examples below). This will recursively merge objects, appending arrays when it encounters them.
+
+Note that when merging objects, this operator returns the merged object (not the parent). This will be clearer in the examples below.
+
+## Merging files
+Note the use of eval-all to ensure all documents are loaded into memory.
+
+```bash
+yq eval-all 'select(fileIndex == 0) * select(fileIndex == 1)' file1.yaml file2.yaml
+```
+
+## Merge objects together, returning merged result only
+Given a sample.yml file of:
+```yaml
+a:
+  field: me
+  fieldA: cat
+b:
+  field:
+    g: wizz
+  fieldB: dog
+```
+then
+```bash
+yq eval '.a * .b' sample.yml
+```
+will output
+```yaml
+field:
+  g: wizz
+fieldA: cat
+fieldB: dog
+```
+
+## Merge objects together, returning parent object
+Given a sample.yml file of:
+```yaml
+a:
+  field: me
+  fieldA: cat
+b:
+  field:
+    g: wizz
+  fieldB: dog
+```
+then
+```bash
+yq eval '. * {"a":.b}' sample.yml
+```
+will output
+```yaml
+a:
+  field:
+    g: wizz
+  fieldA: cat
+  fieldB: dog
+b:
+  field:
+    g: wizz
+  fieldB: dog
+```
+
+## Merge keeps style of LHS
+Given a sample.yml file of:
+```yaml
+a: {things: great}
+b:
+  also: "me"
+
+```
+then
+```bash
+yq eval '. * {"a":.b}' sample.yml
+```
+will output
+```yaml
+a: {things: great, also: "me"}
+b:
+  also: "me"
+```
+
+## Merge arrays
+Given a sample.yml file of:
+```yaml
+a:
+  - 1
+  - 2
+  - 3
+b:
+  - 3
+  - 4
+  - 5
+```
+then
+```bash
+yq eval '. * {"a":.b}' sample.yml
+```
+will output
+```yaml
+a:
+  - 3
+  - 4
+  - 5
+b:
+  - 3
+  - 4
+  - 5
+```
+
+## Merge, appending arrays
+Given a sample.yml file of:
+```yaml
+a:
+  array:
+    - 1
+    - 2
+    - animal: dog
+  value: coconut
+b:
+  array:
+    - 3
+    - 4
+    - animal: cat
+  value: banana
+```
+then
+```bash
+yq eval '.a *+ .b' sample.yml
+```
+will output
+```yaml
+array:
+  - 1
+  - 2
+  - animal: dog
+  - 3
+  - 4
+  - animal: cat
+value: banana
+```
+
+## Merge to prefix an element
+Given a sample.yml file of:
+```yaml
+a: cat
+b: dog
+```
+then
+```bash
+yq eval '. * {"a": {"c": .a}}' sample.yml
+```
+will output
+```yaml
+a:
+  c: cat
+b: dog
+```
+
+## Merge with simple aliases
+Given a sample.yml file of:
+```yaml
+a: &cat
+  c: frog
+b:
+  f: *cat
+c:
+  g: thongs
+```
+then
+```bash
+yq eval '.c * .b' sample.yml
+```
+will output
+```yaml
+g: thongs
+f: *cat
+```
+
+## Merge does not copy anchor names
+Given a sample.yml file of:
+```yaml
+a:
+  c: &cat frog
+b:
+  f: *cat
+c:
+  g: thongs
+```
+then
+```bash
+yq eval '.c * .a' sample.yml
+```
+will output
+```yaml
+g: thongs
+c: frog
+```
+
+## Merge with merge anchors
+Given a sample.yml file of:
+```yaml
+foo: &foo
+  a: foo_a
+  thing: foo_thing
+  c: foo_c
+bar: &bar
+  b: bar_b
+  thing: bar_thing
+  c: bar_c
+foobarList:
+  b: foobarList_b
+  !!merge <<:
+    - *foo
+    - *bar
+  c: foobarList_c
+foobar:
+  c: foobar_c
+  !!merge <<: *foo
+  thing: foobar_thing
+```
+then
+```bash
+yq eval '.foobar * .foobarList' sample.yml
+```
+will output
+```yaml
+c: foobarList_c
+<<:
+  - *foo
+  - *bar
+thing: foobar_thing
+b: foobarList_b
+```
+

pkg/yqlib/doc/Path.md

@@ -1,15 +1,7 @@
-# Path
-
 The path operator can be used to get the traversal paths of matching nodes in an expression. The path is returned as an array, which if traversed in order will lead to the matching node.
 
 You can get the key/index of matching nodes by using the `path` operator to return the path array then piping that through `.[-1]` to get the last element of that array, the key.
 
-{% hint style="warning" %}
-Note that versions prior to 4.18 require the 'eval/e' command to be specified. 
-
-`yq e <exp> <file>`
-{% endhint %}
-
 ## Map path
 Given a sample.yml file of:
 ```yaml
@@ -18,7 +10,7 @@ a:
 ```
 then
 ```bash
-yq '.a.b | path' sample.yml
+yq eval '.a.b | path' sample.yml
 ```
 will output
 ```yaml
@@ -34,7 +26,7 @@ a:
 ```
 then
 ```bash
-yq '.a.b | path | .[-1]' sample.yml
+yq eval '.a.b | path | .[-1]' sample.yml
 ```
 will output
 ```yaml
@@ -50,7 +42,7 @@ a:
 ```
 then
 ```bash
-yq '.a.[] | select(. == "dog") | path' sample.yml
+yq eval '.a.[] | select(. == "dog") | path' sample.yml
 ```
 will output
 ```yaml
@@ -67,7 +59,7 @@ a:
 ```
 then
 ```bash
-yq '.a.[] | select(. == "dog") | path | .[-1]' sample.yml
+yq eval '.a.[] | select(. == "dog") | path | .[-1]' sample.yml
 ```
 will output
 ```yaml
@@ -84,7 +76,7 @@ a:
 ```
 then
 ```bash
-yq '.a[] | select(. == "*og") | [{"path":path, "value":.}]' sample.yml
+yq eval '.a.[] | select(. == "*og") | [{"path":path, "value":.}]' sample.yml
 ```
 will output
 ```yaml

pkg/yqlib/doc/Pipe.md

@@ -1,13 +1,5 @@
-# Pipe
-
 Pipe the results of an expression into another. Like the bash operator.
 
-{% hint style="warning" %}
-Note that versions prior to 4.18 require the 'eval/e' command to be specified. 
-
-`yq e <exp> <file>`
-{% endhint %}
-
 ## Simple Pipe
 Given a sample.yml file of:
 ```yaml
@@ -16,7 +8,7 @@ a:
 ```
 then
 ```bash
-yq '.a | .b' sample.yml
+yq eval '.a | .b' sample.yml
 ```
 will output
 ```yaml
@@ -32,7 +24,7 @@ c: same
 ```
 then
 ```bash
-yq '.a = "cat" | .b = "dog"' sample.yml
+yq eval '.a = "cat" | .b = "dog"' sample.yml
 ```
 will output
 ```yaml

pkg/yqlib/doc/Recursive Descent.md

@@ -0,0 +1,63 @@
+This operator recursively matches all children nodes given of a particular element, including that node itself. This is most often used to apply a filter recursively against all matches, for instance to set the `style` of all nodes in a yaml doc:
+
+```bash
+yq eval '.. style= "flow"' file.yaml
+```
+## Aliases are not traversed
+Given a sample.yml file of:
+```yaml
+a: &cat
+  c: frog
+b: *cat
+```
+then
+```bash
+yq eval '[..]' sample.yml
+```
+will output
+```yaml
+- a: &cat
+    c: frog
+  b: *cat
+- &cat
+  c: frog
+- frog
+- *cat
+```
+
+## Merge docs are not traversed
+Given a sample.yml file of:
+```yaml
+foo: &foo
+  a: foo_a
+  thing: foo_thing
+  c: foo_c
+bar: &bar
+  b: bar_b
+  thing: bar_thing
+  c: bar_c
+foobarList:
+  b: foobarList_b
+  !!merge <<:
+    - *foo
+    - *bar
+  c: foobarList_c
+foobar:
+  c: foobar_c
+  !!merge <<: *foo
+  thing: foobar_thing
+```
+then
+```bash
+yq eval '.foobar | [..]' sample.yml
+```
+will output
+```yaml
+- c: foobar_c
+  !!merge <<: *foo
+  thing: foobar_thing
+- foobar_c
+- *foo
+- foobar_thing
+```
+

pkg/yqlib/doc/Select.md

@@ -0,0 +1,38 @@
+Select is used to filter arrays and maps by a boolean expression.
+## Select elements from array
+Given a sample.yml file of:
+```yaml
+- cat
+- goat
+- dog
+```
+then
+```bash
+yq eval '.[] | select(. == "*at")' sample.yml
+```
+will output
+```yaml
+cat
+goat
+```
+
+## Select and update matching values in map
+Given a sample.yml file of:
+```yaml
+a:
+  things: cat
+  bob: goat
+  horse: dog
+```
+then
+```bash
+yq eval '(.a.[] | select(. == "*at")) |= "rabbit"' sample.yml
+```
+will output
+```yaml
+a:
+  things: rabbit
+  bob: rabbit
+  horse: dog
+```
+

pkg/yqlib/doc/Sort Keys.md

@@ -1,23 +1,13 @@
-# Sort Keys
-
 The Sort Keys operator sorts maps by their keys (based on their string value). This operator does not do anything to arrays or scalars (so you can easily recursively apply it to all maps).
 
 Sort is particularly useful for diffing two different yaml documents:
 
 ```bash
-yq -i -P 'sort_keys(..)' file1.yml
-yq -i -P 'sort_keys(..)' file2.yml
+yq eval -i 'sortKeys(..)' file1.yml
+yq eval -i 'sortKeys(..)' file2.yml
 diff file1.yml file2.yml
 ```
 
-Note that `yq` does not yet consider anchors when sorting by keys - this may result in invalid yaml documents if your are using merge anchors.
-
-{% hint style="warning" %}
-Note that versions prior to 4.18 require the 'eval/e' command to be specified. 
-
-`yq e <exp> <file>`
-{% endhint %}
-
 ## Sort keys of map
 Given a sample.yml file of:
 ```yaml
@@ -27,7 +17,7 @@ b: bing
 ```
 then
 ```bash
-yq 'sort_keys(.)' sample.yml
+yq eval 'sortKeys(.)' sample.yml
 ```
 will output
 ```yaml
@@ -57,7 +47,7 @@ aParent:
 ```
 then
 ```bash
-yq 'sort_keys(..)' sample.yml
+yq eval 'sortKeys(..)' sample.yml
 ```
 will output
 ```yaml

pkg/yqlib/doc/Style.md

@@ -0,0 +1,165 @@
+The style operator can be used to get or set the style of nodes (e.g. string style, yaml style)
+## Set tagged style
+Given a sample.yml file of:
+```yaml
+a: cat
+b: 5
+c: 3.2
+e: true
+```
+then
+```bash
+yq eval '.. style="tagged"' sample.yml
+```
+will output
+```yaml
+!!map
+a: !!str cat
+b: !!int 5
+c: !!float 3.2
+e: !!bool true
+```
+
+## Set double quote style
+Given a sample.yml file of:
+```yaml
+a: cat
+b: 5
+c: 3.2
+e: true
+```
+then
+```bash
+yq eval '.. style="double"' sample.yml
+```
+will output
+```yaml
+a: "cat"
+b: "5"
+c: "3.2"
+e: "true"
+```
+
+## Set single quote style
+Given a sample.yml file of:
+```yaml
+a: cat
+b: 5
+c: 3.2
+e: true
+```
+then
+```bash
+yq eval '.. style="single"' sample.yml
+```
+will output
+```yaml
+a: 'cat'
+b: '5'
+c: '3.2'
+e: 'true'
+```
+
+## Set literal quote style
+Given a sample.yml file of:
+```yaml
+a: cat
+b: 5
+c: 3.2
+e: true
+```
+then
+```bash
+yq eval '.. style="literal"' sample.yml
+```
+will output
+```yaml
+a: |-
+  cat
+b: |-
+  5
+c: |-
+  3.2
+e: |-
+  true
+```
+
+## Set folded quote style
+Given a sample.yml file of:
+```yaml
+a: cat
+b: 5
+c: 3.2
+e: true
+```
+then
+```bash
+yq eval '.. style="folded"' sample.yml
+```
+will output
+```yaml
+a: >-
+  cat
+b: >-
+  5
+c: >-
+  3.2
+e: >-
+  true
+```
+
+## Set flow quote style
+Given a sample.yml file of:
+```yaml
+a: cat
+b: 5
+c: 3.2
+e: true
+```
+then
+```bash
+yq eval '.. style="flow"' sample.yml
+```
+will output
+```yaml
+{a: cat, b: 5, c: 3.2, e: true}
+```
+
+## Pretty print
+Set empty (default) quote style
+
+Given a sample.yml file of:
+```yaml
+a: cat
+b: 5
+c: 3.2
+e: true
+```
+then
+```bash
+yq eval '.. style=""' sample.yml
+```
+will output
+```yaml
+a: cat
+b: 5
+c: 3.2
+e: true
+```
+
+## Read style
+Given a sample.yml file of:
+```yaml
+{a: "cat", b: 'thing'}
+```
+then
+```bash
+yq eval '.. | style' sample.yml
+```
+will output
+```yaml
+flow
+double
+single
+```
+