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Merge branch 'v3'

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Mike Farah 2020-01-30 13:00:14 +11:00
commit 789ea02096
112 changed files with 2868 additions and 9541 deletions
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1
.gitignore vendored
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@ -23,6 +23,7 @@ _cgo_export.*
_testmain.go
coverage.out
coverage.html
*.exe
*.test
*.prof

61
README.md
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@ -1,26 +1,14 @@
# yq
[![Build Status](https://travis-ci.com/mikefarah/yq.svg?branch=master)](https://travis-ci.com/mikefarah/yq) ![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)
[![Build Status](https://api.travis-ci.com/mikefarah/yq.svg?branch=master)](https://travis-ci.com/mikefarah/yq/) ![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 processor
The aim of the project is to be the [jq](https://github.com/stedolan/jq) or sed of yaml files.
## Major upgrade - V3 beta is out!
This addresses a number of features requests and issues that have been raised :)
Currently only available only available as a [binary release here](https://github.com/mikefarah/yq/releases/tag/3.0.0-beta) or via docker mikefarah/yq:3.0.0-beta!
It does have a few breaking changes listed on the [release page](https://github.com/mikefarah/yq/releases/tag/3.0.0-beta)
The updated user docs are available [here](https://mikefarah.gitbook.io/yq/)
Looking forward to feedback - once this is out of beta it will be added to the remaining package managers, and be the default version downloaded (and merged into master).
V2 will no longer have any new features added, and will be moved to a branch (v2). It will have limited maintenance for bugs for a few months.
## New version!
V3 is officially out - if you've been using v2 and want/need to upgrade, checkout the [upgrade guide](https://mikefarah.gitbook.io/yq/upgrading-from-v2).
## Install
@ -59,7 +47,7 @@ sudo apt install yq -y
```
### or, [Download latest binary](https://github.com/mikefarah/yq/releases/latest) or alternatively:
```
GO111MODULE=on go get github.com/mikefarah/yq/v2
GO111MODULE=on go get github.com/mikefarah/yq/v3
```
## Run with Docker
@ -86,44 +74,39 @@ yq() {
## Features
- Written in portable go, so you can download a lovely dependency free binary
- Deep read a yaml file with a given path
- Update a yaml file given a path
- Update a yaml file given a script file
- [Deep read a yaml file with a given path expression](https://mikefarah.gitbook.io/yq/commands/read#basic)
- [List matching paths of a given path expression](https://mikefarah.gitbook.io/yq/commands/read#path-only)
- Update a yaml file given a [path expression](https://mikefarah.gitbook.io/yq/commands/write-update#basic) or [script file](https://mikefarah.gitbook.io/yq/commands/write-update#basic)
- Update creates any missing entries in the path on the fly
- Create a yaml file given a deep path and value
- Create a yaml file given a script file
- Prefix a path to a yaml file
- Convert from json to yaml
- Convert from yaml to json
- Pipe data in by using '-'
- Merge multiple yaml files where each additional file sets values for missing or null value keys.
- Merge multiple yaml files and override previous values.
- Merge multiple yaml files and append array values.
- Supports multiple documents in a single yaml file
- Keeps yaml formatting and comments when updating
- Create a yaml file given a [deep path and value](https://mikefarah.gitbook.io/yq/commands/create#creating-a-simple-yaml-file) or a [script file](https://mikefarah.gitbook.io/yq/commands/create#creating-using-a-create-script)
- [Prefix a path to a yaml file](https://mikefarah.gitbook.io/yq/commands/prefix)
- [Convert to/from json to yaml](https://mikefarah.gitbook.io/yq/usage/convert)
- [Pipe data in by using '-'](https://mikefarah.gitbook.io/yq/commands/read#from-stdin)
- [Merge](https://mikefarah.gitbook.io/yq/commands/merge) multiple yaml files with various options for [overriding](https://mikefarah.gitbook.io/yq/commands/merge#overwrite-values) and [appending](https://mikefarah.gitbook.io/yq/commands/merge#append-values-with-arrays)
- Supports multiple documents in a single yaml file for [reading](https://mikefarah.gitbook.io/yq/commands/read#multiple-documents), [writing](https://mikefarah.gitbook.io/yq/commands/write-update#multiple-documents) and [merging](https://mikefarah.gitbook.io/yq/commands/merge#multiple-documents)
## [Usage](https://mikefarah.gitbook.io/yq/v/v2.x/)
## [Usage](https://mikefarah.gitbook.io/yq/)
Check out the [documentation](https://mikefarah.gitbook.io/yq/v/v2.x/) for more detailed and advanced usage.
Check out the [documentation](https://mikefarah.gitbook.io/yq/) for more detailed and advanced usage.
```
yq is a lightweight and portable command-line YAML processor. It aims to be the jq or sed of yaml files.
Usage:
yq [flags]
yq [command]
Available Commands:
delete yq d [--inplace/-i] [--doc/-d index] sample.yaml a.b.c
delete yq d [--inplace/-i] [--doc/-d index] sample.yaml 'b.e(name==fred).value'
help Help about any command
merge yq m [--inplace/-i] [--doc/-d index] [--overwrite/-x] [--append/-a] sample.yaml sample2.yaml
new yq n [--script/-s script_file] a.b.c newValue
prefix yq p [--inplace/-i] [--doc/-d index] sample.yaml a.b.c
read yq r [--doc/-d index] sample.yaml a.b.c
write yq w [--inplace/-i] [--script/-s script_file] [--doc/-d index] sample.yaml a.b.c newValue
read yq r [--printMode/-p pv] sample.yaml 'b.e(name==fr*).value'
write yq w [--inplace/-i] [--script/-s script_file] [--doc/-d index] sample.yaml 'b.e(name==fr*).value' newValue
Flags:
-h, --help help for yq
-t, --trim trim yaml output (default true)
-j, --tojson output as json
-v, --verbose verbose mode
-V, --version Print version information and quit
@ -139,8 +122,4 @@ Use "yq [command] --help" for more information about a command.
3. add unit tests
4. apply changes to go.mod
5. `make [local] build`
6. If required, update the user documentation
- Update README.md and/or documentation under the mkdocs folder
- `make [local] build-docs`
- browse to docs/index.html and check your changes
7. profit

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Upgrade Notes Normal file
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Major release! Upgraded underlying yaml parser, re-written majority of yq. This has brought on a number of features that have been in demand for a while (see below).
This is in beta and needs some community feedback and testing :)
# New Features
- Keeps yaml comments and formatting, can specify yaml tags when updating. https://github.com/mikefarah/yq/issues/19, https://github.com/mikefarah/yq/issues/169, https://github.com/mikefarah/yq/issues/107, https://github.com/mikefarah/yq/issues/171, https://github.com/mikefarah/yq/issues/245, https://github.com/mikefarah/yq/issues/303,https://github.com/mikefarah/yq/issues/308,https://github.com/mikefarah/yq/issues/314
- Handles anchors! https://github.com/mikefarah/yq/issues/310, https://github.com/mikefarah/yq/issues/178
- Can print out matching paths and values when splatting https://github.com/mikefarah/yq/issues/20
- JSON output works for all commands! Yaml files with multiple documents are printed out as one JSON document per line.
- Deep splat (**) to match arbitrary paths
# Breaking changes
## Update scripts file format has changed to be more powerful.
Comments can be added, and delete commands have been introduced.
Before:
```yaml
b.e[+].name: Mike Farah
```
After:
```yaml
- command: update
path: b.e[+].thing
value:
#great
things: frog # wow!
- command: delete
path: b.d
```
https://github.com/mikefarah/yq/issues/305
## Reading and splatting, matching results are printed once per line.
e.g:
```json
parent:
childA:
no: matches here
childB:
there: matches
hi: no match
there2: also matches
```
```bash
yq r sample.yaml 'parent.*.there*'
```
old
```yaml
- null
- - matches
- also matches
```
new
```yaml
matches
also matches
```
and you can print the matching paths:
yq r --printMode pv sample.yaml 'parent.*.there*'
```yaml
parent.childB.there: matches
parent.childB.there2: also matches
```

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commands_test.go → cmd/commands_test.go
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package cmd
import (
"github.com/mikefarah/yq/v3/pkg/yqlib"
logging "gopkg.in/op/go-logging.v1"
)
var customTag = ""
var printMode = "v"
var writeInplace = false
var writeScript = ""
var outputToJSON = false
var overwriteFlag = false
var autoCreateFlag = true
var allowEmptyFlag = false
var appendFlag = false
var verbose = false
var version = false
var docIndex = "0"
var log = logging.MustGetLogger("yq")
var lib = yqlib.NewYqLib()
var valueParser = yqlib.NewValueParser()

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package cmd
import (
"github.com/mikefarah/yq/v3/pkg/yqlib"
errors "github.com/pkg/errors"
"github.com/spf13/cobra"
)
func createDeleteCmd() *cobra.Command {
var cmdDelete = &cobra.Command{
Use: "delete [yaml_file] [path_expression]",
Aliases: []string{"d"},
Short: "yq d [--inplace/-i] [--doc/-d index] sample.yaml 'b.e(name==fred).value'",
Example: `
yq delete things.yaml 'a.b.c'
yq delete things.yaml 'a.*.c'
yq delete things.yaml 'a.(child.subchild==co*).c'
yq delete things.yaml 'a.**'
yq delete --inplace things.yaml 'a.b.c'
yq delete --inplace -- things.yaml '--key-starting-with-dash' # need to use '--' to stop processing arguments as flags
yq d -i things.yaml 'a.b.c'
`,
Long: `Deletes the nodes matching the given path expression from the YAML file.
Outputs to STDOUT unless the inplace flag is used, in which case the file is updated instead.
`,
RunE: deleteProperty,
}
cmdDelete.PersistentFlags().BoolVarP(&writeInplace, "inplace", "i", false, "update the yaml file inplace")
cmdDelete.PersistentFlags().StringVarP(&docIndex, "doc", "d", "0", "process document index number (0 based, * for all documents)")
return cmdDelete
}
func deleteProperty(cmd *cobra.Command, args []string) error {
if len(args) < 2 {
return errors.New("Must provide <filename> <path_to_delete>")
}
var updateCommands []yqlib.UpdateCommand = make([]yqlib.UpdateCommand, 1)
updateCommands[0] = yqlib.UpdateCommand{Command: "delete", Path: args[1]}
return updateDoc(args[0], updateCommands, cmd.OutOrStdout())
}

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cmd/merge.go Normal file
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package cmd
import (
"strings"
"github.com/mikefarah/yq/v3/pkg/yqlib"
errors "github.com/pkg/errors"
"github.com/spf13/cobra"
)
func createMergeCmd() *cobra.Command {
var cmdMerge = &cobra.Command{
Use: "merge [initial_yaml_file] [additional_yaml_file]...",
Aliases: []string{"m"},
Short: "yq m [--inplace/-i] [--doc/-d index] [--overwrite/-x] [--append/-a] sample.yaml sample2.yaml",
Example: `
yq merge things.yaml other.yaml
yq merge --inplace things.yaml other.yaml
yq m -i things.yaml other.yaml
yq m --overwrite things.yaml other.yaml
yq m -i -x things.yaml other.yaml
yq m -i -a things.yaml other.yaml
yq m -i --autocreate=false things.yaml other.yaml
`,
Long: `Updates the yaml file by adding/updating the path(s) and value(s) from additional yaml file(s).
Outputs to STDOUT unless the inplace flag is used, in which case the file is updated instead.
If overwrite flag is set then existing values will be overwritten using the values from each additional yaml file.
If append flag is set then existing arrays will be merged with the arrays from each additional yaml file.
`,
RunE: mergeProperties,
}
cmdMerge.PersistentFlags().BoolVarP(&writeInplace, "inplace", "i", false, "update the yaml file inplace")
cmdMerge.PersistentFlags().BoolVarP(&overwriteFlag, "overwrite", "x", false, "update the yaml file by overwriting existing values")
cmdMerge.PersistentFlags().BoolVarP(&autoCreateFlag, "autocreate", "c", true, "automatically create any missing entries")
cmdMerge.PersistentFlags().BoolVarP(&appendFlag, "append", "a", false, "update the yaml file by appending array values")
cmdMerge.PersistentFlags().BoolVarP(&allowEmptyFlag, "allow-empty", "e", false, "allow empty yaml files")
cmdMerge.PersistentFlags().StringVarP(&docIndex, "doc", "d", "0", "process document index number (0 based, * for all documents)")
return cmdMerge
}
func mergeProperties(cmd *cobra.Command, args []string) error {
if len(args) < 2 {
return errors.New("Must provide at least 2 yaml files")
}
// first generate update commands from the file
var filesToMerge = args[1:]
var updateCommands []yqlib.UpdateCommand = make([]yqlib.UpdateCommand, 0)
for _, fileToMerge := range filesToMerge {
matchingNodes, errorProcessingFile := readYamlFile(fileToMerge, "**", false, 0)
if errorProcessingFile != nil && (!allowEmptyFlag || !strings.HasPrefix(errorProcessingFile.Error(), "Could not process document index")) {
return errorProcessingFile
}
for _, matchingNode := range matchingNodes {
mergePath := lib.MergePathStackToString(matchingNode.PathStack, appendFlag)
updateCommands = append(updateCommands, yqlib.UpdateCommand{Command: "update", Path: mergePath, Value: matchingNode.Node, Overwrite: overwriteFlag})
}
}
return updateDoc(args[0], updateCommands, cmd.OutOrStdout())
}

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package cmd
import (
"github.com/spf13/cobra"
yaml "gopkg.in/yaml.v3"
)
func createNewCmd() *cobra.Command {
var cmdNew = &cobra.Command{
Use: "new [path] [value]",
Aliases: []string{"n"},
Short: "yq n [--script/-s script_file] a.b.c newValue",
Example: `
yq new 'a.b.c' cat
yq n 'a.b.c' --tag '!!str' true # force 'true' to be interpreted as a string instead of bool
yq n 'a.b[+]' cat
yq n -- '--key-starting-with-dash' cat # need to use '--' to stop processing arguments as flags
yq n --script create_script.yaml
`,
Long: `Creates a new yaml w.r.t the given path and value.
Outputs to STDOUT
Create Scripts:
Note that you can give a create script to perform more sophisticated yaml. This follows the same format as the update script.
`,
RunE: newProperty,
}
cmdNew.PersistentFlags().StringVarP(&writeScript, "script", "s", "", "yaml script for creating yaml")
cmdNew.PersistentFlags().StringVarP(&customTag, "tag", "t", "", "set yaml tag (e.g. !!int)")
return cmdNew
}
func newProperty(cmd *cobra.Command, args []string) error {
var updateCommands, updateCommandsError = readUpdateCommands(args, 2, "Must provide <path_to_update> <value>")
if updateCommandsError != nil {
return updateCommandsError
}
newNode := lib.New(updateCommands[0].Path)
for _, updateCommand := range updateCommands {
errorUpdating := lib.Update(&newNode, updateCommand, true)
if errorUpdating != nil {
return errorUpdating
}
}
var encoder = yaml.NewEncoder(cmd.OutOrStdout())
encoder.SetIndent(2)
errorEncoding := encoder.Encode(&newNode)
encoder.Close()
return errorEncoding
}

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package cmd
import (
"github.com/mikefarah/yq/v3/pkg/yqlib"
errors "github.com/pkg/errors"
"github.com/spf13/cobra"
yaml "gopkg.in/yaml.v3"
)
func createPrefixCmd() *cobra.Command {
var cmdPrefix = &cobra.Command{
Use: "prefix [yaml_file] [path]",
Aliases: []string{"p"},
Short: "yq p [--inplace/-i] [--doc/-d index] sample.yaml a.b.c",
Example: `
yq prefix things.yaml 'a.b.c'
yq prefix --inplace things.yaml 'a.b.c'
yq prefix --inplace -- things.yaml '--key-starting-with-dash' # need to use '--' to stop processing arguments as flags
yq p -i things.yaml 'a.b.c'
yq p --doc 2 things.yaml 'a.b.d'
yq p -d2 things.yaml 'a.b.d'
`,
Long: `Prefixes w.r.t to the yaml file at the given path.
Outputs to STDOUT unless the inplace flag is used, in which case the file is updated instead.
`,
RunE: prefixProperty,
}
cmdPrefix.PersistentFlags().BoolVarP(&writeInplace, "inplace", "i", false, "update the yaml file inplace")
cmdPrefix.PersistentFlags().StringVarP(&docIndex, "doc", "d", "0", "process document index number (0 based, * for all documents)")
return cmdPrefix
}
func prefixProperty(cmd *cobra.Command, args []string) error {
if len(args) < 2 {
return errors.New("Must provide <filename> <prefixed_path>")
}
updateCommand := yqlib.UpdateCommand{Command: "update", Path: args[1]}
log.Debugf("args %v", args)
var updateAll, docIndexInt, errorParsingDocIndex = parseDocumentIndex()
if errorParsingDocIndex != nil {
return errorParsingDocIndex
}
var updateData = func(dataBucket *yaml.Node, currentIndex int) error {
return prefixDocument(updateAll, docIndexInt, currentIndex, dataBucket, updateCommand)
}
return readAndUpdate(cmd.OutOrStdout(), args[0], updateData)
}

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package cmd
import (
errors "github.com/pkg/errors"
"github.com/spf13/cobra"
)
func createReadCmd() *cobra.Command {
var cmdRead = &cobra.Command{
Use: "read [yaml_file] [path_expression]",
Aliases: []string{"r"},
Short: "yq r [--printMode/-p pv] sample.yaml 'b.e(name==fr*).value'",
Example: `
yq read things.yaml 'a.b.c'
yq r - 'a.b.c' # reads from stdin
yq r things.yaml 'a.*.c'
yq r things.yaml 'a.**.c' # deep splat
yq r things.yaml 'a.(child.subchild==co*).c'
yq r -d1 things.yaml 'a.array[0].blah'
yq r things.yaml 'a.array[*].blah'
yq r -- things.yaml '--key-starting-with-dashes.blah'
`,
Long: "Outputs the value of the given path in the yaml file to STDOUT",
RunE: readProperty,
}
cmdRead.PersistentFlags().StringVarP(&docIndex, "doc", "d", "0", "process document index number (0 based, * for all documents)")
cmdRead.PersistentFlags().StringVarP(&printMode, "printMode", "p", "v", "print mode (v (values, default), p (paths), pv (path and value pairs)")
return cmdRead
}
func readProperty(cmd *cobra.Command, args []string) error {
var path = ""
if len(args) < 1 {
return errors.New("Must provide filename")
} else if len(args) > 1 {
path = args[1]
}
var updateAll, docIndexInt, errorParsingDocIndex = parseDocumentIndex()
if errorParsingDocIndex != nil {
return errorParsingDocIndex
}
matchingNodes, errorReadingStream := readYamlFile(args[0], path, updateAll, docIndexInt)
if errorReadingStream != nil {
return errorReadingStream
}
return printResults(matchingNodes, cmd)
}

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package cmd
import (
"os"
"github.com/spf13/cobra"
logging "gopkg.in/op/go-logging.v1"
)
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 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
}
cmd.Println(cmd.UsageString())
return nil
},
PersistentPreRun: func(cmd *cobra.Command, args []string) {
var format = logging.MustStringFormatter(
`%{color}%{time:15:04:05} %{shortfunc} [%{level:.4s}]%{color:reset} %{message}`,
)
var backend = logging.AddModuleLevel(
logging.NewBackendFormatter(logging.NewLogBackend(os.Stderr, "", 0), format))
if verbose {
backend.SetLevel(logging.DEBUG, "")
} else {
backend.SetLevel(logging.ERROR, "")
}
logging.SetBackend(backend)
},
}
rootCmd.PersistentFlags().BoolVarP(&verbose, "verbose", "v", false, "verbose mode")
rootCmd.PersistentFlags().BoolVarP(&outputToJSON, "tojson", "j", false, "output as json")
rootCmd.Flags().BoolVarP(&version, "version", "V", false, "Print version information and quit")
rootCmd.AddCommand(
createReadCmd(),
createWriteCmd(),
createPrefixCmd(),
createDeleteCmd(),
createNewCmd(),
createMergeCmd(),
)
rootCmd.SetOutput(os.Stdout)
return rootCmd
}

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package cmd
import (
"bufio"
"fmt"
"io"
"io/ioutil"
"os"
"strconv"
"github.com/mikefarah/yq/v3/pkg/yqlib"
errors "github.com/pkg/errors"
"github.com/spf13/cobra"
yaml "gopkg.in/yaml.v3"
)
func readYamlFile(filename string, path string, updateAll bool, docIndexInt int) ([]*yqlib.NodeContext, error) {
var matchingNodes []*yqlib.NodeContext
var currentIndex = 0
var errorReadingStream = readStream(filename, func(decoder *yaml.Decoder) error {
for {
var dataBucket yaml.Node
errorReading := decoder.Decode(&dataBucket)
if errorReading == io.EOF {
return handleEOF(updateAll, docIndexInt, currentIndex)
}
var errorParsing error
matchingNodes, errorParsing = appendDocument(matchingNodes, dataBucket, path, updateAll, docIndexInt, currentIndex)
if errorParsing != nil {
return errorParsing
}
currentIndex = currentIndex + 1
}
})
return matchingNodes, errorReadingStream
}
func handleEOF(updateAll bool, docIndexInt int, currentIndex int) error {
log.Debugf("done %v / %v", currentIndex, docIndexInt)
if !updateAll && currentIndex <= docIndexInt {
return fmt.Errorf("Could not process document index %v as there are only %v document(s)", docIndex, currentIndex)
}
return nil
}
func appendDocument(originalMatchingNodes []*yqlib.NodeContext, dataBucket yaml.Node, path string, updateAll bool, docIndexInt int, currentIndex int) ([]*yqlib.NodeContext, error) {
log.Debugf("processing document %v - requested index %v", currentIndex, docIndexInt)
yqlib.DebugNode(&dataBucket)
if !updateAll && currentIndex != docIndexInt {
return originalMatchingNodes, nil
}
log.Debugf("reading %v in document %v", path, currentIndex)
matchingNodes, errorParsing := lib.Get(&dataBucket, path)
if errorParsing != nil {
return nil, errors.Wrapf(errorParsing, "Error reading path in document index %v", currentIndex)
}
return append(originalMatchingNodes, matchingNodes...), nil
}
func printValue(node *yaml.Node, cmd *cobra.Command) error {
if node.Kind == yaml.ScalarNode {
cmd.Print(node.Value)
return nil
}
bufferedWriter := bufio.NewWriter(cmd.OutOrStdout())
defer safelyFlush(bufferedWriter)
var encoder yqlib.Encoder
if outputToJSON {
encoder = yqlib.NewJsonEncoder(bufferedWriter)
} else {
encoder = yqlib.NewYamlEncoder(bufferedWriter)
}
if err := encoder.Encode(node); err != nil {
return err
}
return nil
}
func printResults(matchingNodes []*yqlib.NodeContext, cmd *cobra.Command) error {
if len(matchingNodes) == 0 {
log.Debug("no matching results, nothing to print")
return nil
}
for index, mappedDoc := range matchingNodes {
switch printMode {
case "p":
cmd.Print(lib.PathStackToString(mappedDoc.PathStack))
if index < len(matchingNodes)-1 {
cmd.Print("\n")
}
case "pv", "vp":
// put it into a node and print that.
var parentNode = yaml.Node{Kind: yaml.MappingNode}
parentNode.Content = make([]*yaml.Node, 2)
parentNode.Content[0] = &yaml.Node{Kind: yaml.ScalarNode, Value: lib.PathStackToString(mappedDoc.PathStack)}
parentNode.Content[1] = mappedDoc.Node
if err := printValue(&parentNode, cmd); err != nil {
return err
}
default:
if err := printValue(mappedDoc.Node, cmd); err != nil {
return err
}
// Printing our Scalars does not print a new line at the end
// we only want to do that if there are more values (so users can easily script extraction of values in the yaml)
if index < len(matchingNodes)-1 && mappedDoc.Node.Kind == yaml.ScalarNode {
cmd.Print("\n")
}
}
}
return nil
}
func parseDocumentIndex() (bool, int, error) {
if docIndex == "*" {
return true, -1, nil
}
docIndexInt64, err := strconv.ParseInt(docIndex, 10, 32)
if err != nil {
return false, -1, errors.Wrapf(err, "Document index %v is not a integer or *", docIndex)
}
return false, int(docIndexInt64), nil
}
type updateDataFn func(dataBucket *yaml.Node, currentIndex int) error
func mapYamlDecoder(updateData updateDataFn, encoder yqlib.Encoder) yamlDecoderFn {
return func(decoder *yaml.Decoder) error {
var dataBucket yaml.Node
var errorReading error
var errorWriting error
var errorUpdating error
var currentIndex = 0
var updateAll, docIndexInt, errorParsingDocIndex = parseDocumentIndex()
if errorParsingDocIndex != nil {
return errorParsingDocIndex
}
for {
log.Debugf("Read doc %v", currentIndex)
errorReading = decoder.Decode(&dataBucket)
if errorReading == io.EOF {
if !updateAll && currentIndex <= docIndexInt {
return fmt.Errorf("asked to process document index %v but there are only %v document(s)", docIndex, currentIndex)
}
return nil
} else if errorReading != nil {
return errors.Wrapf(errorReading, "Error reading document at index %v, %v", currentIndex, errorReading)
}
errorUpdating = updateData(&dataBucket, currentIndex)
if errorUpdating != nil {
return errors.Wrapf(errorUpdating, "Error updating document at index %v", currentIndex)
}
errorWriting = encoder.Encode(&dataBucket)
if errorWriting != nil {
return errors.Wrapf(errorWriting, "Error writing document at index %v, %v", currentIndex, errorWriting)
}
currentIndex = currentIndex + 1
}
}
}
func prefixDocument(updateAll bool, docIndexInt int, currentIndex int, dataBucket *yaml.Node, updateCommand yqlib.UpdateCommand) error {
if updateAll || currentIndex == docIndexInt {
log.Debugf("Prefixing document %v", currentIndex)
yqlib.DebugNode(dataBucket)
updateCommand.Value = dataBucket.Content[0]
dataBucket.Content = make([]*yaml.Node, 1)
newNode := lib.New(updateCommand.Path)
dataBucket.Content[0] = &newNode
errorUpdating := lib.Update(dataBucket, updateCommand, true)
if errorUpdating != nil {
return errorUpdating
}
}
return nil
}
func updateDoc(inputFile string, updateCommands []yqlib.UpdateCommand, writer io.Writer) error {
var updateAll, docIndexInt, errorParsingDocIndex = parseDocumentIndex()
if errorParsingDocIndex != nil {
return errorParsingDocIndex
}
var updateData = func(dataBucket *yaml.Node, currentIndex int) error {
if updateAll || currentIndex == docIndexInt {
log.Debugf("Updating doc %v", currentIndex)
for _, updateCommand := range updateCommands {
log.Debugf("Processing update to Path %v", updateCommand.Path)
errorUpdating := lib.Update(dataBucket, updateCommand, autoCreateFlag)
if errorUpdating != nil {
return errorUpdating
}
}
}
return nil
}
return readAndUpdate(writer, inputFile, updateData)
}
func readAndUpdate(stdOut io.Writer, inputFile string, updateData updateDataFn) error {
var destination io.Writer
var destinationName string
if writeInplace {
info, err := os.Stat(inputFile)
if err != nil {
return err
}
tempFile, err := ioutil.TempFile("", "temp")
if err != nil {
return err
}
destinationName = tempFile.Name()
err = os.Chmod(destinationName, info.Mode())
if err != nil {
return err
}
destination = tempFile
defer func() {
safelyCloseFile(tempFile)
safelyRenameFile(tempFile.Name(), inputFile)
}()
} else {
destination = stdOut
destinationName = "Stdout"
}
log.Debugf("Writing to %v from %v", destinationName, inputFile)
bufferedWriter := bufio.NewWriter(destination)
defer safelyFlush(bufferedWriter)
var encoder yqlib.Encoder
if outputToJSON {
encoder = yqlib.NewJsonEncoder(bufferedWriter)
} else {
encoder = yqlib.NewYamlEncoder(bufferedWriter)
}
return readStream(inputFile, mapYamlDecoder(updateData, encoder))
}
type updateCommandParsed struct {
Command string
Path string
Value yaml.Node
}
func readUpdateCommands(args []string, expectedArgs int, badArgsMessage string) ([]yqlib.UpdateCommand, error) {
var updateCommands []yqlib.UpdateCommand = make([]yqlib.UpdateCommand, 0)
if writeScript != "" {
var parsedCommands = make([]updateCommandParsed, 0)
err := readData(writeScript, 0, &parsedCommands)
if err != nil && err != io.EOF {
return nil, err
}
log.Debugf("Read write commands file '%v'", parsedCommands)
for index := range parsedCommands {
parsedCommand := parsedCommands[index]
updateCommand := yqlib.UpdateCommand{Command: parsedCommand.Command, Path: parsedCommand.Path, Value: &parsedCommand.Value, Overwrite: true}
updateCommands = append(updateCommands, updateCommand)
}
log.Debugf("Read write commands file '%v'", updateCommands)
} else if len(args) < expectedArgs {
return nil, errors.New(badArgsMessage)
} else {
updateCommands = make([]yqlib.UpdateCommand, 1)
log.Debug("args %v", args)
log.Debug("path %v", args[expectedArgs-2])
log.Debug("Value %v", args[expectedArgs-1])
updateCommands[0] = yqlib.UpdateCommand{Command: "update", Path: args[expectedArgs-2], Value: valueParser.Parse(args[expectedArgs-1], customTag), Overwrite: true}
}
return updateCommands, nil
}
func safelyRenameFile(from string, to string) {
if renameError := os.Rename(from, to); renameError != nil {
log.Debugf("Error renaming from %v to %v, attempting to copy contents", from, to)
log.Debug(renameError.Error())
// can't do this rename when running in docker to a file targeted in a mounted volume,
// so gracefully degrade to copying the entire contents.
if copyError := copyFileContents(from, to); copyError != nil {
log.Errorf("Failed copying from %v to %v", from, to)
log.Error(copyError.Error())
} else {
removeErr := os.Remove(from)
if removeErr != nil {
log.Errorf("failed removing original file: %s", from)
}
}
}
}
// thanks https://stackoverflow.com/questions/21060945/simple-way-to-copy-a-file-in-golang
func copyFileContents(src, dst string) (err error) {
in, err := os.Open(src) // nolint gosec
if err != nil {
return err
}
defer safelyCloseFile(in)
out, err := os.Create(dst)
if err != nil {
return err
}
defer safelyCloseFile(out)
if _, err = io.Copy(out, in); err != nil {
return err
}
return out.Sync()
}
func safelyFlush(writer *bufio.Writer) {
if err := writer.Flush(); err != nil {
log.Error("Error flushing writer!")
log.Error(err.Error())
}
}
func safelyCloseFile(file *os.File) {
err := file.Close()
if err != nil {
log.Error("Error closing file!")
log.Error(err.Error())
}
}
type yamlDecoderFn func(*yaml.Decoder) error
func readStream(filename string, yamlDecoder yamlDecoderFn) error {
if filename == "" {
return errors.New("Must provide filename")
}
var stream io.Reader
if filename == "-" {
stream = bufio.NewReader(os.Stdin)
} else {
file, err := os.Open(filename) // nolint gosec
if err != nil {
return err
}
defer safelyCloseFile(file)
stream = file
}
return yamlDecoder(yaml.NewDecoder(stream))
}
func readData(filename string, indexToRead int, parsedData interface{}) error {
return readStream(filename, func(decoder *yaml.Decoder) error {
for currentIndex := 0; currentIndex < indexToRead; currentIndex++ {
errorSkipping := decoder.Decode(parsedData)
if errorSkipping != nil {
return errors.Wrapf(errorSkipping, "Error processing document at index %v, %v", currentIndex, errorSkipping)
}
}
return decoder.Decode(parsedData)
})
}

4
version.go → cmd/version.go
View File

@ -1,4 +1,4 @@
package main
package cmd
import (
"fmt"
@ -11,7 +11,7 @@ var (
GitDescribe string
// Version is main version number that is being run at the moment.
Version = "2.4.1"
Version = "3.0.1"
// 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

2
version_test.go → cmd/version_test.go
View File

@ -1,4 +1,4 @@
package main
package cmd
import "testing"

57
cmd/write.go Normal file
View File

@ -0,0 +1,57 @@
package cmd
import (
"github.com/spf13/cobra"
)
func createWriteCmd() *cobra.Command {
var cmdWrite = &cobra.Command{
Use: "write [yaml_file] [path_expression] [value]",
Aliases: []string{"w"},
Short: "yq w [--inplace/-i] [--script/-s script_file] [--doc/-d index] sample.yaml 'b.e(name==fr*).value' newValue",
Example: `
yq write things.yaml 'a.b.c' true
yq write things.yaml 'a.*.c' true
yq write things.yaml 'a.**' true
yq write things.yaml 'a.(child.subchild==co*).c' true
yq write things.yaml 'a.b.c' --tag '!!str' true # force 'true' to be interpreted as a string instead of bool
yq write things.yaml 'a.b.c' --tag '!!float' 3
yq write --inplace -- things.yaml 'a.b.c' '--cat' # need to use '--' to stop processing arguments as flags
yq w -i things.yaml 'a.b.c' cat
yq w -i -s update_script.yaml things.yaml
yq w things.yaml 'a.b.d[+]' foo # appends a new node to the 'd' array
yq w --doc 2 things.yaml 'a.b.d[+]' foo # updates the 3rd document of the yaml file
`,
Long: `Updates the yaml file w.r.t the given path and value.
Outputs to STDOUT unless the inplace flag is used, in which case the file is updated instead.
Append value to array adds the value to the end of array.
Update Scripts:
Note that you can give an update script to perform more sophisticated update. Update script
format is list of update commands (update or delete) like so:
---
- command: update
path: b.c
value:
#great
things: frog # wow!
- command: delete
path: b.d
`,
RunE: writeProperty,
}
cmdWrite.PersistentFlags().BoolVarP(&writeInplace, "inplace", "i", false, "update the yaml file inplace")
cmdWrite.PersistentFlags().StringVarP(&writeScript, "script", "s", "", "yaml script for updating yaml")
cmdWrite.PersistentFlags().StringVarP(&customTag, "tag", "t", "", "set yaml tag (e.g. !!int)")
cmdWrite.PersistentFlags().StringVarP(&docIndex, "doc", "d", "0", "process document index number (0 based, * for all documents)")
return cmdWrite
}
func writeProperty(cmd *cobra.Command, args []string) error {
var updateCommands, updateCommandsError = readUpdateCommands(args, 3, "Must provide <filename> <path_to_update> <value>")
if updateCommandsError != nil {
return updateCommandsError
}
return updateDoc(args[0], updateCommands, cmd.OutOrStdout())
}

13
compare.sh Executable file
View File

@ -0,0 +1,13 @@
GREEN='\033[0;32m'
NC='\033[0m'
echo "${GREEN}---Old---${NC}"
yq $@ > /tmp/yq-old-output
cat /tmp/yq-old-output
echo "${GREEN}---New---${NC}"
./yq $@ > /tmp/yq-new-output
cat /tmp/yq-new-output
echo "${GREEN}---Diff---${NC}"
colordiff /tmp/yq-old-output /tmp/yq-new-output

130
docs/404.html
View File

@ -32,7 +32,7 @@
<meta name="lang:search.tokenizer" content="[\s\-]+">
<link rel="shortcut icon" href="/assets/images/favicon.png">
<meta name="generator" content="mkdocs-1.0.4, mkdocs-material-4.2.0">
<meta name="generator" content="mkdocs-1.0.4, mkdocs-material-4.6.0">
@ -40,17 +40,17 @@
<link rel="stylesheet" href="/assets/stylesheets/application.750b69bd.css">
<link rel="stylesheet" href="/assets/stylesheets/application.1b62728e.css">
<script src="/assets/javascripts/modernizr.74668098.js"></script>
<script src="/assets/javascripts/modernizr.268332fc.js"></script>
<link href="https://fonts.gstatic.com" rel="preconnect" crossorigin>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,400i,700|Roboto+Mono">
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,400i,700%7CRoboto+Mono&display=fallback">
<style>body,input{font-family:"Roboto","Helvetica Neue",Helvetica,Arial,sans-serif}code,kbd,pre{font-family:"Roboto Mono","Courier New",Courier,monospace}</style>
@ -69,24 +69,7 @@
<defs>
<svg xmlns="http://www.w3.org/2000/svg" width="416" height="448"
viewBox="0 0 416 448" id="__github">
<path fill="currentColor" d="M160 304q0 10-3.125 20.5t-10.75 19-18.125
8.5-18.125-8.5-10.75-19-3.125-20.5 3.125-20.5 10.75-19 18.125-8.5
18.125 8.5 10.75 19 3.125 20.5zM320 304q0 10-3.125 20.5t-10.75
19-18.125 8.5-18.125-8.5-10.75-19-3.125-20.5 3.125-20.5 10.75-19
18.125-8.5 18.125 8.5 10.75 19 3.125 20.5zM360
304q0-30-17.25-51t-46.75-21q-10.25 0-48.75 5.25-17.75 2.75-39.25
2.75t-39.25-2.75q-38-5.25-48.75-5.25-29.5 0-46.75 21t-17.25 51q0 22 8
38.375t20.25 25.75 30.5 15 35 7.375 37.25 1.75h42q20.5 0
37.25-1.75t35-7.375 30.5-15 20.25-25.75 8-38.375zM416 260q0 51.75-15.25
82.75-9.5 19.25-26.375 33.25t-35.25 21.5-42.5 11.875-42.875 5.5-41.75
1.125q-19.5 0-35.5-0.75t-36.875-3.125-38.125-7.5-34.25-12.875-30.25-20.25-21.5-28.75q-15.5-30.75-15.5-82.75
0-59.25 34-99-6.75-20.5-6.75-42.5 0-29 12.75-54.5 27 0 47.5 9.875t47.25
30.875q36.75-8.75 77.25-8.75 37 0 70 8 26.25-20.5
46.75-30.25t47.25-9.75q12.75 25.5 12.75 54.5 0 21.75-6.75 42 34 40 34
99.5z" />
</svg>
<svg xmlns="http://www.w3.org/2000/svg" width="416" height="448" viewBox="0 0 416 448" id="__github"><path fill="currentColor" d="M160 304q0 10-3.125 20.5t-10.75 19T128 352t-18.125-8.5-10.75-19T96 304t3.125-20.5 10.75-19T128 256t18.125 8.5 10.75 19T160 304zm160 0q0 10-3.125 20.5t-10.75 19T288 352t-18.125-8.5-10.75-19T256 304t3.125-20.5 10.75-19T288 256t18.125 8.5 10.75 19T320 304zm40 0q0-30-17.25-51T296 232q-10.25 0-48.75 5.25Q229.5 240 208 240t-39.25-2.75Q130.75 232 120 232q-29.5 0-46.75 21T56 304q0 22 8 38.375t20.25 25.75 30.5 15 35 7.375 37.25 1.75h42q20.5 0 37.25-1.75t35-7.375 30.5-15 20.25-25.75T360 304zm56-44q0 51.75-15.25 82.75-9.5 19.25-26.375 33.25t-35.25 21.5-42.5 11.875-42.875 5.5T212 416q-19.5 0-35.5-.75t-36.875-3.125-38.125-7.5-34.25-12.875T37 371.5t-21.5-28.75Q0 312 0 260q0-59.25 34-99-6.75-20.5-6.75-42.5 0-29 12.75-54.5 27 0 47.5 9.875t47.25 30.875Q171.5 96 212 96q37 0 70 8 26.25-20.5 46.75-30.25T376 64q12.75 25.5 12.75 54.5 0 21.75-6.75 42 34 40 34 99.5z"/></svg>
</defs>
</svg>
@ -116,6 +99,8 @@
</span>
<span class="md-header-nav__topic">
</span>
</div>
@ -180,7 +165,7 @@
<main class="md-main">
<main class="md-main" role="main">
<div class="md-main__inner md-grid" data-md-component="container">
@ -225,92 +210,8 @@
<li class="md-nav__item">
<a href="/." title="Install" class="md-nav__link">
Install
</a>
</li>
<li class="md-nav__item">
<a href="/read/" title="Read" class="md-nav__link">
Read
</a>
</li>
<li class="md-nav__item">
<a href="/write/" title="Write/Update" class="md-nav__link">
Write/Update
</a>
</li>
<li class="md-nav__item">
<a href="/prefix/" title="Prefix" class="md-nav__link">
Prefix
</a>
</li>
<li class="md-nav__item">
<a href="/delete/" title="Delete" class="md-nav__link">
Delete
</a>
</li>
<li class="md-nav__item">
<a href="/create/" title="Create" class="md-nav__link">
Create
</a>
</li>
<li class="md-nav__item">
<a href="/convert/" title="Convert" class="md-nav__link">
Convert
</a>
</li>
<li class="md-nav__item">
<a href="/merge/" title="Merge" class="md-nav__link">
Merge
<a href="/." title="Home" class="md-nav__link">
Home
</a>
</li>
@ -352,22 +253,13 @@
Material for MkDocs</a>
</div>
<div class="md-footer-social">
<link rel="stylesheet" href="/assets/fonts/font-awesome.css">
<a href="https://github.com/mikefarah" class="md-footer-social__link fa fa-github"></a>
<a href="https://www.linkedin.com/in/mike-farah-b5a75b2/" class="md-footer-social__link fa fa-linkedin"></a>
</div>
</div>
</div>
</footer>
</div>
<script src="/assets/javascripts/application.39abc4af.js"></script>
<script src="/assets/javascripts/application.808e90bb.js"></script>
<script>app.initialize({version:"1.0.4",url:{base:"/"}})</script>

21
docs/assets/images/icons/bitbucket.1b09e088.svg
View File

@ -1,20 +1 @@
<svg xmlns="http://www.w3.org/2000/svg" width="352" height="448"
viewBox="0 0 352 448" id="__bitbucket">
<path fill="currentColor" d="M203.75 214.75q2 15.75-12.625 25.25t-27.875
1.5q-9.75-4.25-13.375-14.5t-0.125-20.5 13-14.5q9-4.5 18.125-3t16 8.875
6.875 16.875zM231.5 209.5q-3.5-26.75-28.25-41t-49.25-3.25q-15.75
7-25.125 22.125t-8.625 32.375q1 22.75 19.375 38.75t41.375 14q22.75-2
38-21t12.5-42zM291.25
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2.875q57 7.25 112 0.25 15.75-2 22.375-3t18.125-5.375 18.75-11.625zM305.5
332.75q-2 6.5-3.875 19.125t-3.5 21-7.125 17.5-14.5 14.125q-21.5
12-47.375 17.875t-50.5 5.5-50.375-4.625q-11.5-2-20.375-4.5t-19.125-6.75-18.25-10.875-13-15.375q-6.25-24-14.25-73l1.5-4
4.5-2.25q55.75 37 126.625 37t126.875-37q5.25 1.5 6 5.75t-1.25 11.25-2
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</svg>
<svg xmlns="http://www.w3.org/2000/svg" width="352" height="448" viewBox="0 0 352 448" id="__bitbucket"><path fill="currentColor" d="M203.75 214.75q2 15.75-12.625 25.25t-27.875 1.5q-9.75-4.25-13.375-14.5t-.125-20.5 13-14.5q9-4.5 18.125-3t16 8.875 6.875 16.875zm27.75-5.25q-3.5-26.75-28.25-41T154 165.25q-15.75 7-25.125 22.125t-8.625 32.375q1 22.75 19.375 38.75t41.375 14q22.75-2 38-21t12.5-42zM291.25 74q-5-6.75-14-11.125t-14.5-5.5T245 54.25q-72.75-11.75-141.5.5-10.75 1.75-16.5 3t-13.75 5.5T60.75 74q7.5 7 19 11.375t18.375 5.5T120 93.75Q177 101 232 94q15.75-2 22.375-3t18.125-5.375T291.25 74zm14.25 258.75q-2 6.5-3.875 19.125t-3.5 21-7.125 17.5-14.5 14.125q-21.5 12-47.375 17.875t-50.5 5.5-50.375-4.625q-11.5-2-20.375-4.5T88.75 412 70.5 401.125t-13-15.375q-6.25-24-14.25-73l1.5-4 4.5-2.25q55.75 37 126.625 37t126.875-37q5.25 1.5 6 5.75t-1.25 11.25-2 9.25zM350.75 92.5q-6.5 41.75-27.75 163.75-1.25 7.5-6.75 14t-10.875 10T291.75 288q-63 31.5-152.5 22-62-6.75-98.5-34.75-3.75-3-6.375-6.625t-4.25-8.75-2.25-8.5-1.5-9.875T25 232.75q-2.25-12.5-6.625-37.5t-7-40.375T5.5 118 0 78.5Q.75 72 4.375 66.375T12.25 57t11.25-7.5T35 43.875t12-4.625q31.25-11.5 78.25-16 94.75-9.25 169 12.5Q333 47.25 348 66.25q4 5 4.125 12.75t-1.375 13.5z"/></svg>
Side by Side Swipe Overlay

Before

Width:  |  Height:  |  Size: 1.4 KiB

After

Width:  |  Height:  |  Size: 1.2 KiB

19
docs/assets/images/icons/github.f0b8504a.svg
View File

@ -1,18 +1 @@
<svg xmlns="http://www.w3.org/2000/svg" width="416" height="448"
viewBox="0 0 416 448" id="__github">
<path fill="currentColor" d="M160 304q0 10-3.125 20.5t-10.75 19-18.125
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/*!
* Lunr languages, `Danish` language
* https://github.com/MihaiValentin/lunr-languages
*
* Copyright 2014, Mihai Valentin
* http://www.mozilla.org/MPL/
*/
/*!
* based on
* Snowball JavaScript Library v0.3
* http://code.google.com/p/urim/
* http://snowball.tartarus.org/
*
* Copyright 2010, Oleg Mazko
* http://www.mozilla.org/MPL/
*/
!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(e){if(void 0===e)throw new Error("Lunr is not present. Please include / require Lunr before this script.");if(void 0===e.stemmerSupport)throw new Error("Lunr stemmer support is not present. Please include / require Lunr stemmer support before this script.");var r,m,i;e.da=function(){this.pipeline.reset(),this.pipeline.add(e.da.trimmer,e.da.stopWordFilter,e.da.stemmer),this.searchPipeline&&(this.searchPipeline.reset(),this.searchPipeline.add(e.da.stemmer))},e.da.wordCharacters="A-Za-zªºÀ-ÖØ-öø-ʸˠ-ˤᴀ-ᴥᴬ-ᵜᵢ-ᵥᵫ-ᵷᵹ-ᶾḀ-ỿⁱⁿₐ-ₜKÅℲⅎⅠ-ↈⱠ-ⱿꜢ-ꞇꞋ-ꞭꞰ-ꞷꟷ-ꟿꬰ-ꭚꭜ-ꭤff-stＡ-Ｚａ-ｚ",e.da.trimmer=e.trimmerSupport.generateTrimmer(e.da.wordCharacters),e.Pipeline.registerFunction(e.da.trimmer,"trimmer-da"),e.da.stemmer=(r=e.stemmerSupport.Among,m=e.stemmerSupport.SnowballProgram,i=new function(){var i,t,n,s=[new r("hed",-1,1),new r("ethed",0,1),new r("ered",-1,1),new r("e",-1,1),new r("erede",3,1),new r("ende",3,1),new r("erende",5,1),new r("ene",3,1),new r("erne",3,1),new r("ere",3,1),new r("en",-1,1),new r("heden",10,1),new r("eren",10,1),new r("er",-1,1),new r("heder",13,1),new r("erer",13,1),new r("s",-1,2),new r("heds",16,1),new r("es",16,1),new r("endes",18,1),new r("erendes",19,1),new r("enes",18,1),new r("ernes",18,1),new r("eres",18,1),new r("ens",16,1),new r("hedens",24,1),new r("erens",24,1),new r("ers",16,1),new r("ets",16,1),new r("erets",28,1),new r("et",-1,1),new r("eret",30,1)],o=[new r("gd",-1,-1),new r("dt",-1,-1),new r("gt",-1,-1),new r("kt",-1,-1)],a=[new r("ig",-1,1),new r("lig",0,1),new r("elig",1,1),new r("els",-1,1),new r("løst",-1,2)],d=[17,65,16,1,0,0,0,0,0,0,0,0,0,0,0,0,48,0,128],u=[239,254,42,3,0,0,0,0,0,0,0,0,0,0,0,0,16],c=new m;function l(){var e,r=c.limit-c.cursor;c.cursor>=t&&(e=c.limit_backward,c.limit_backward=t,c.ket=c.cursor,c.find_among_b(o,4)?(c.bra=c.cursor,c.limit_backward=e,c.cursor=c.limit-r,c.cursor>c.limit_backward&&(c.cursor--,c.bra=c.cursor,c.slice_del())):c.limit_backward=e)}this.setCurrent=function(e){c.setCurrent(e)},this.getCurrent=function(){return c.getCurrent()},this.stem=function(){var e,r=c.cursor;return function(){var e,r=c.cursor+3;if(t=c.limit,0<=r&&r<=c.limit){for(i=r;;){if(e=c.cursor,c.in_grouping(d,97,248)){c.cursor=e;break}if((c.cursor=e)>=c.limit)return;c.cursor++}for(;!c.out_grouping(d,97,248);){if(c.cursor>=c.limit)return;c.cursor++}(t=c.cursor)<i&&(t=i)}}(),c.limit_backward=r,c.cursor=c.limit,function(){var e,r;if(c.cursor>=t&&(r=c.limit_backward,c.limit_backward=t,c.ket=c.cursor,e=c.find_among_b(s,32),c.limit_backward=r,e))switch(c.bra=c.cursor,e){case 1:c.slice_del();break;case 2:c.in_grouping_b(u,97,229)&&c.slice_del()}}(),c.cursor=c.limit,l(),c.cursor=c.limit,function(){var e,r,i,n=c.limit-c.cursor;if(c.ket=c.cursor,c.eq_s_b(2,"st")&&(c.bra=c.cursor,c.eq_s_b(2,"ig")&&c.slice_del()),c.cursor=c.limit-n,c.cursor>=t&&(r=c.limit_backward,c.limit_backward=t,c.ket=c.cursor,e=c.find_among_b(a,5),c.limit_backward=r,e))switch(c.bra=c.cursor,e){case 1:c.slice_del(),i=c.limit-c.cursor,l(),c.cursor=c.limit-i;break;case 2:c.slice_from("løs")}}(),c.cursor=c.limit,c.cursor>=t&&(e=c.limit_backward,c.limit_backward=t,c.ket=c.cursor,c.out_grouping_b(d,97,248)?(c.bra=c.cursor,n=c.slice_to(n),c.limit_backward=e,c.eq_v_b(n)&&c.slice_del()):c.limit_backward=e),!0}},function(e){return"function"==typeof e.update?e.update(function(e){return i.setCurrent(e),i.stem(),i.getCurrent()}):(i.setCurrent(e),i.stem(),i.getCurrent())}),e.Pipeline.registerFunction(e.da.stemmer,"stemmer-da"),e.da.stopWordFilter=e.generateStopWordFilter("ad af alle alt anden at blev blive bliver da de dem den denne der deres det dette dig din disse dog du efter eller en end er et for fra ham han hans har havde have hende hendes her hos hun hvad hvis hvor i ikke ind jeg jer jo kunne man mange med meget men mig min mine mit mod ned noget nogle nu når og også om op os over på selv sig sin sine sit skal skulle som sådan thi til ud under var vi vil ville vor være været".split(" ")),e.Pipeline.registerFunction(e.da.stopWordFilter,"stopWordFilter-da")}});

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/*!
* Lunr languages, `Japanese` language
* https://github.com/MihaiValentin/lunr-languages
*
* Copyright 2014, Chad Liu
* http://www.mozilla.org/MPL/
*/
/*!
* based on
* Snowball JavaScript Library v0.3
* http://code.google.com/p/urim/
* http://snowball.tartarus.org/
*
* Copyright 2010, Oleg Mazko
* http://www.mozilla.org/MPL/
*/
!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(m){if(void 0===m)throw new Error("Lunr is not present. Please include / require Lunr before this script.");if(void 0===m.stemmerSupport)throw new Error("Lunr stemmer support is not present. Please include / require Lunr stemmer support before this script.");var l="2"==m.version[0];m.ja=function(){this.pipeline.reset(),this.pipeline.add(m.ja.trimmer,m.ja.stopWordFilter,m.ja.stemmer),l?this.tokenizer=m.ja.tokenizer:(m.tokenizer&&(m.tokenizer=m.ja.tokenizer),this.tokenizerFn&&(this.tokenizerFn=m.ja.tokenizer))};var j=new m.TinySegmenter;m.ja.tokenizer=function(e){var r,t,i,n,o,s,p,a,u;if(!arguments.length||null==e||null==e)return[];if(Array.isArray(e))return e.map(function(e){return l?new m.Token(e.toLowerCase()):e.toLowerCase()});for(r=(t=e.toString().toLowerCase().replace(/^\s+/,"")).length-1;0<=r;r--)if(/\S/.test(t.charAt(r))){t=t.substring(0,r+1);break}for(o=[],i=t.length,p=a=0;a<=i;a++)if(s=a-p,t.charAt(a).match(/\s/)||a==i){if(0<s)for(n=j.segment(t.slice(p,a)).filter(function(e){return!!e}),u=p,r=0;r<n.length;r++)l?o.push(new m.Token(n[r],{position:[u,n[r].length],index:o.length})):o.push(n[r]),u+=n[r].length;p=a+1}return o},m.ja.stemmer=function(e){return e},m.Pipeline.registerFunction(m.ja.stemmer,"stemmer-ja"),m.ja.wordCharacters="一二三四五六七八九十百千万億兆一-龠々〆ヵヶぁ-んァ-ヴーｱ-ﾝﾞa-zA-Zａ-ｚＡ-Ｚ0-9０-９",m.ja.trimmer=m.trimmerSupport.generateTrimmer(m.ja.wordCharacters),m.Pipeline.registerFunction(m.ja.trimmer,"trimmer-ja"),m.ja.stopWordFilter=m.generateStopWordFilter("これ それ あれ この その あの ここ そこ あそこ こちら どこ だれ なに なん 何 私 貴方 貴方方 我々 私達 あの人 あのかた 彼女 彼 です あります おります います は が の に を で え から まで より も どの と し それで しかし".split(" ")),m.Pipeline.registerFunction(m.ja.stopWordFilter,"stopWordFilter-ja"),m.jp=m.ja,m.Pipeline.registerFunction(m.jp.stemmer,"stemmer-jp"),m.Pipeline.registerFunction(m.jp.trimmer,"trimmer-jp"),m.Pipeline.registerFunction(m.jp.stopWordFilter,"stopWordFilter-jp")}});

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!function(e,i){"function"==typeof define&&define.amd?define(i):"object"==typeof exports?module.exports=i():i()(e.lunr)}(this,function(){return function(o){o.multiLanguage=function(){for(var e=Array.prototype.slice.call(arguments),i=e.join("-"),t="",r=[],n=[],s=0;s<e.length;++s)"en"==e[s]?(t+="\\w",r.unshift(o.stopWordFilter),r.push(o.stemmer),n.push(o.stemmer)):(t+=o[e[s]].wordCharacters,r.unshift(o[e[s]].stopWordFilter),r.push(o[e[s]].stemmer),n.push(o[e[s]].stemmer));var p=o.trimmerSupport.generateTrimmer(t);return o.Pipeline.registerFunction(p,"lunr-multi-trimmer-"+i),r.unshift(p),function(){this.pipeline.reset(),this.pipeline.add.apply(this.pipeline,r),this.searchPipeline&&(this.searchPipeline.reset(),this.searchPipeline.add.apply(this.searchPipeline,n))}}}});
!function(e,t){"function"==typeof define&&define.amd?define(t):"object"==typeof exports?module.exports=t():t()(e.lunr)}(this,function(){return function(o){o.multiLanguage=function(){for(var e=Array.prototype.slice.call(arguments),t=e.join("-"),i="",r=[],n=[],s=0;s<e.length;++s)"en"==e[s]?(i+="\\w",r.unshift(o.stopWordFilter),r.push(o.stemmer),n.push(o.stemmer)):(i+=o[e[s]].wordCharacters,o[e[s]].stopWordFilter&&r.unshift(o[e[s]].stopWordFilter),o[e[s]].stemmer&&(r.push(o[e[s]].stemmer),n.push(o[e[s]].stemmer)));var p=o.trimmerSupport.generateTrimmer(i);return o.Pipeline.registerFunction(p,"lunr-multi-trimmer-"+t),r.unshift(p),function(){this.pipeline.reset(),this.pipeline.add.apply(this.pipeline,r),this.searchPipeline&&(this.searchPipeline.reset(),this.searchPipeline.add.apply(this.searchPipeline,n))}}}});

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/*!
* Lunr languages, `Norwegian` language
* https://github.com/MihaiValentin/lunr-languages
*
* Copyright 2014, Mihai Valentin
* http://www.mozilla.org/MPL/
*/
/*!
* based on
* Snowball JavaScript Library v0.3
* http://code.google.com/p/urim/
* http://snowball.tartarus.org/
*
* Copyright 2010, Oleg Mazko
* http://www.mozilla.org/MPL/
*/
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/*!
* Snowball JavaScript Library v0.3
* http://code.google.com/p/urim/
* http://snowball.tartarus.org/
*
* Copyright 2010, Oleg Mazko
* http://www.mozilla.org/MPL/
*/
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/*!
* Lunr languages, `Swedish` language
* https://github.com/MihaiValentin/lunr-languages
*
* Copyright 2014, Mihai Valentin
* http://www.mozilla.org/MPL/
*/
/*!
* based on
* Snowball JavaScript Library v0.3
* http://code.google.com/p/urim/
* http://snowball.tartarus.org/
*
* Copyright 2010, Oleg Mazko
* http://www.mozilla.org/MPL/
*/
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/*!
* Lunr languages, `Thai` language
* https://github.com/MihaiValentin/lunr-languages
*
* Copyright 2017, Keerati Thiwanruk
* http://www.mozilla.org/MPL/
*/
/*!
* based on
* Snowball JavaScript Library v0.3
* http://code.google.com/p/urim/
* http://snowball.tartarus.org/
*
* Copyright 2010, Oleg Mazko
* http://www.mozilla.org/MPL/
*/
!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(t){if(void 0===t)throw new Error("Lunr is not present. Please include / require Lunr before this script.");if(void 0===t.stemmerSupport)throw new Error("Lunr stemmer support is not present. Please include / require Lunr stemmer support before this script.");var i="2"==t.version[0];t.th=function(){this.pipeline.reset(),this.pipeline.add(t.th.trimmer),i?this.tokenizer=t.th.tokenizer:(t.tokenizer&&(t.tokenizer=t.th.tokenizer),this.tokenizerFn&&(this.tokenizerFn=t.th.tokenizer))},t.th.wordCharacters="[฀-๿]",t.th.trimmer=t.trimmerSupport.generateTrimmer(t.th.wordCharacters),t.Pipeline.registerFunction(t.th.trimmer,"trimmer-th");var n=t.wordcut;n.init(),t.th.tokenizer=function(e){if(!arguments.length||null==e||null==e)return[];if(Array.isArray(e))return e.map(function(e){return i?new t.Token(e):e});var r=e.toString().replace(/^\s+/,"");return n.cut(r).split("|")}}});

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/*!
* Lunr languages, `Vietnamese` language
* https://github.com/MihaiValentin/lunr-languages
*
* Copyright 2017, Keerati Thiwanruk
* http://www.mozilla.org/MPL/
*/
/*!
* based on
* Snowball JavaScript Library v0.3
* http://code.google.com/p/urim/
* http://snowball.tartarus.org/
*
* Copyright 2010, Oleg Mazko
* http://www.mozilla.org/MPL/
*/
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<h1>Convert</h1>
<h3 id="yaml-to-json">Yaml to Json<a class="headerlink" href="#yaml-to-json" title="Permanent link">&para;</a></h3>
<p>To convert output to json, use the --tojson (or -j) flag. This can only be used with the read command.</p>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">b:
c: 2
</code></pre>
<p>then</p>
<pre><code class="bash">yq r -j sample.yaml b.c
</code></pre>
<p>will output</p>
<pre><code class="json">{&quot;b&quot;:{&quot;c&quot;:2}}
</code></pre>
<h3 id="json-to-yaml">Json to Yaml<a class="headerlink" href="#json-to-yaml" title="Permanent link">&para;</a></h3>
<p>To read in json, just pass in a json file instead of yaml, it will just work :)</p>
<p>e.g given a json file</p>
<pre><code class="json">{&quot;a&quot;:&quot;Easy! as one two three&quot;,&quot;b&quot;:{&quot;c&quot;:2,&quot;d&quot;:[3,4]}}
</code></pre>
<p>then</p>
<pre><code class="bash">yq r sample.json
</code></pre>
<p>will output</p>
<pre><code class="yaml">a: Easy! as one two three
b:
c: 2
d:
- 3
- 4
</code></pre>
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<h1>Create</h1>
<p>Yaml files can be created using the 'new' command. This works in the same way as the write command, but you don't pass in an existing Yaml file. Currently this does not support creating multiple documents in a single yaml file.</p>
<pre><code>yq n &lt;path&gt; &lt;new value&gt;
</code></pre>
<h3 id="creating-a-simple-yaml-file">Creating a simple yaml file<a class="headerlink" href="#creating-a-simple-yaml-file" title="Permanent link">&para;</a></h3>
<pre><code class="bash">yq n b.c cat
</code></pre>
<p>will output:</p>
<pre><code class="yaml">b:
c: cat
</code></pre>
<h3 id="creating-using-a-create-script">Creating using a create script<a class="headerlink" href="#creating-using-a-create-script" title="Permanent link">&para;</a></h3>
<p>Create scripts follow the same format as the update scripts.</p>
<p>Given a script create_instructions.yaml of:</p>
<pre><code class="yaml">b.c: 3
b.e[+].name: Howdy Partner
</code></pre>
<p>then</p>
<pre><code class="bash">yq n -s create_instructions.yaml
</code></pre>
<p>will output:</p>
<pre><code class="yaml">b:
c: 3
e:
- name: Howdy Partner
</code></pre>
<p>You can also pipe the instructions in:</p>
<pre><code class="bash">cat create_instructions.yaml | yq n -s -
</code></pre>
<h3 id="keys-with-dots">Keys with dots<a class="headerlink" href="#keys-with-dots" title="Permanent link">&para;</a></h3>
<p>When specifying a key that has a dot use key lookup indicator.</p>
<pre><code class="yaml">b:
foo.bar: 7
</code></pre>
<pre><code class="bash">yaml r sample.yaml 'b[foo.bar]'
</code></pre>
<pre><code class="bash">yaml w sample.yaml 'b[foo.bar]' 9
</code></pre>
<p>Any valid yaml key can be specified as part of a key lookup.</p>
<p>Note that the path is in quotes to avoid the square brackets being interpreted by your shell.</p>
<h3 id="keys-and-values-with-leading-dashes">Keys (and values) with leading dashes<a class="headerlink" href="#keys-and-values-with-leading-dashes" title="Permanent link">&para;</a></h3>
<p>If a key or value has leading dashes, yq won't know that you are passing a value as opposed to a flag (and you will get a 'bad flag syntax' error).</p>
<p>To fix that, you will need to tell it to stop processing flags by adding '--' after the last flag like so:</p>
<pre><code class="bash">yq n -t -- --key --value
</code></pre>
<p>Will result in</p>
<p><code>`
--key: --value</code></p>
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From STDIN
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Deleting array elements
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Deleting nodes in-place
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<a href="#splat" title="Splat" class="md-nav__link">
Splat
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Prefix Splat
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Array Splat
</a>
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Multiple Documents - delete from single document
</a>
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<a href="#multiple-documents-delete-from-all-documents" title="Multiple Documents - delete from all documents" class="md-nav__link">
Multiple Documents - delete from all documents
</a>
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<a href="#keys-with-dots" title="Keys with dots" class="md-nav__link">
Keys with dots
</a>
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<a href="#keys-and-values-with-leading-dashes" title="Keys (and values) with leading dashes" class="md-nav__link">
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Deleting nodes in-place
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Multiple Documents - delete from single document
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Multiple Documents - delete from all documents
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Keys with dots
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<a href="https://github.com/mikefarah/yq/edit/master/docs/delete.md" title="Edit this page" class="md-icon md-content__icon">&#xE3C9;</a>
<h1>Delete</h1>
<pre><code>yq d &lt;yaml_file&gt; &lt;path_to_delete&gt;
</code></pre>
<h3 id="to-stdout">To Stdout<a class="headerlink" href="#to-stdout" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">b:
c: 2
apples: green
</code></pre>
<p>then</p>
<pre><code class="bash">yq d sample.yaml b.c
</code></pre>
<p>will output:</p>
<pre><code class="yaml">b:
apples: green
</code></pre>
<h3 id="from-stdin">From STDIN<a class="headerlink" href="#from-stdin" title="Permanent link">&para;</a></h3>
<pre><code class="bash">cat sample.yaml | yq d - b.c
</code></pre>
<h3 id="deleting-array-elements">Deleting array elements<a class="headerlink" href="#deleting-array-elements" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">b:
c:
- 1
- 2
- 3
</code></pre>
<p>then</p>
<pre><code class="bash">yq d sample.yaml 'b.c[1]'
</code></pre>
<p>will output:</p>
<pre><code class="yaml">b:
c:
- 1
- 3
</code></pre>
<h3 id="deleting-nodes-in-place">Deleting nodes in-place<a class="headerlink" href="#deleting-nodes-in-place" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">b:
c: 2
apples: green
</code></pre>
<p>then</p>
<pre><code class="bash">yq d -i sample.yaml b.c
</code></pre>
<p>will update the sample.yaml file so that the 'c' node is deleted</p>
<h3 id="splat">Splat<a class="headerlink" href="#splat" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">---
bob:
item1:
cats: bananas
dogs: woof
item2:
cats: apples
dogs: woof2
thing:
cats: oranges
dogs: woof3
</code></pre>
<p>then</p>
<pre><code class="bash">yq d sample.yaml bob.*.cats
</code></pre>
<p>will output:</p>
<pre><code class="yaml">---
bob:
item1:
dogs: woof
item2:
dogs: woof2
thing:
dogs: woof3
</code></pre>
<h3 id="prefix-splat">Prefix Splat<a class="headerlink" href="#prefix-splat" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">---
bob:
item1:
cats: bananas
dogs: woof
item2:
cats: apples
dogs: woof2
thing:
cats: oranges
dogs: woof3
</code></pre>
<p>then</p>
<pre><code class="bash">yq d sample.yaml bob.item*.cats
</code></pre>
<p>will output:</p>
<pre><code class="yaml">---
bob:
item1:
dogs: woof
item2:
dogs: woof2
thing:
cats: oranges
dogs: woof3
</code></pre>
<h3 id="array-splat">Array Splat<a class="headerlink" href="#array-splat" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">---
bob:
- cats: bananas
dogs: woof
- cats: apples
dogs: woof2
- cats: oranges
dogs: woof3
</code></pre>
<p>then</p>
<pre><code class="bash">yq d sample.yaml bob.[*].cats
</code></pre>
<p>will output:</p>
<pre><code class="yaml">---
bob:
- dogs: woof
- dogs: woof2
- dogs: woof3
</code></pre>
<h3 id="multiple-documents-delete-from-single-document">Multiple Documents - delete from single document<a class="headerlink" href="#multiple-documents-delete-from-single-document" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">something: else
field: leaveMe
---
b:
c: 2
field: deleteMe
</code></pre>
<p>then</p>
<pre><code class="bash">yq w -d1 sample.yaml field
</code></pre>
<p>will output:</p>
<pre><code class="yaml">something: else
field: leaveMe
---
b:
c: 2
</code></pre>
<h3 id="multiple-documents-delete-from-all-documents">Multiple Documents - delete from all documents<a class="headerlink" href="#multiple-documents-delete-from-all-documents" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">something: else
field: deleteMe
---
b:
c: 2
field: deleteMeToo
</code></pre>
<p>then</p>
<pre><code class="bash">yq w -d'*' sample.yaml field
</code></pre>
<p>will output:</p>
<pre><code class="yaml">something: else
---
b:
c: 2
</code></pre>
<p>Note that '*' is in quotes to avoid being interpreted by your shell.</p>
<h3 id="keys-with-dots">Keys with dots<a class="headerlink" href="#keys-with-dots" title="Permanent link">&para;</a></h3>
<p>When specifying a key that has a dot use key lookup indicator.</p>
<pre><code class="yaml">b:
foo.bar: 7
</code></pre>
<pre><code class="bash">yaml r sample.yaml 'b[foo.bar]'
</code></pre>
<pre><code class="bash">yaml w sample.yaml 'b[foo.bar]' 9
</code></pre>
<p>Any valid yaml key can be specified as part of a key lookup.</p>
<p>Note that the path is in quotes to avoid the square brackets being interpreted by your shell.</p>
<h3 id="keys-and-values-with-leading-dashes">Keys (and values) with leading dashes<a class="headerlink" href="#keys-and-values-with-leading-dashes" title="Permanent link">&para;</a></h3>
<p>If a key or value has leading dashes, yq won't know that you are passing a value as opposed to a flag (and you will get a 'bad flag syntax' error).</p>
<p>To fix that, you will need to tell it to stop processing flags by adding '--' after the last flag like so:</p>
<pre><code class="bash">yq n -t -- --key --value
</code></pre>
<p>Will result in</p>
<p><code>`
--key: --value</code></p>
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<div class="md-footer-meta__inner md-grid">
<div class="md-footer-copyright">
powered by
<a href="https://www.mkdocs.org">MkDocs</a>
and
<a href="https://squidfunk.github.io/mkdocs-material/">
Material for MkDocs</a>
</div>
<div class="md-footer-social">
<link rel="stylesheet" href="../assets/fonts/font-awesome.css">
<a href="https://github.com/mikefarah" class="md-footer-social__link fa fa-github"></a>
<a href="https://www.linkedin.com/in/mike-farah-b5a75b2/" class="md-footer-social__link fa fa-linkedin"></a>
</div>
</div>
</div>
</footer>
</div>
<script src="../assets/javascripts/application.39abc4af.js"></script>
<script>app.initialize({version:"1.0.4",url:{base:".."}})</script>
</body>
</html>

323
docs/index.html
View File

@ -32,7 +32,7 @@
<meta name="lang:search.tokenizer" content="[\s\-]+">
<link rel="shortcut icon" href="assets/images/favicon.png">
<meta name="generator" content="mkdocs-1.0.4, mkdocs-material-4.2.0">
<meta name="generator" content="mkdocs-1.0.4, mkdocs-material-4.6.0">
@ -40,17 +40,17 @@
<link rel="stylesheet" href="assets/stylesheets/application.750b69bd.css">
<link rel="stylesheet" href="assets/stylesheets/application.1b62728e.css">
<script src="assets/javascripts/modernizr.74668098.js"></script>
<script src="assets/javascripts/modernizr.268332fc.js"></script>
<link href="https://fonts.gstatic.com" rel="preconnect" crossorigin>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,400i,700|Roboto+Mono">
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,400i,700%7CRoboto+Mono&display=fallback">
<style>body,input{font-family:"Roboto","Helvetica Neue",Helvetica,Arial,sans-serif}code,kbd,pre{font-family:"Roboto Mono","Courier New",Courier,monospace}</style>
@ -69,24 +69,7 @@
<defs>
<svg xmlns="http://www.w3.org/2000/svg" width="416" height="448"
viewBox="0 0 416 448" id="__github">
<path fill="currentColor" d="M160 304q0 10-3.125 20.5t-10.75 19-18.125
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18.125 8.5 10.75 19 3.125 20.5zM320 304q0 10-3.125 20.5t-10.75
19-18.125 8.5-18.125-8.5-10.75-19-3.125-20.5 3.125-20.5 10.75-19
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38.375t20.25 25.75 30.5 15 35 7.375 37.25 1.75h42q20.5 0
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</svg>
<svg xmlns="http://www.w3.org/2000/svg" width="416" height="448" viewBox="0 0 416 448" id="__github"><path fill="currentColor" d="M160 304q0 10-3.125 20.5t-10.75 19T128 352t-18.125-8.5-10.75-19T96 304t3.125-20.5 10.75-19T128 256t18.125 8.5 10.75 19T160 304zm160 0q0 10-3.125 20.5t-10.75 19T288 352t-18.125-8.5-10.75-19T256 304t3.125-20.5 10.75-19T288 256t18.125 8.5 10.75 19T320 304zm40 0q0-30-17.25-51T296 232q-10.25 0-48.75 5.25Q229.5 240 208 240t-39.25-2.75Q130.75 232 120 232q-29.5 0-46.75 21T56 304q0 22 8 38.375t20.25 25.75 30.5 15 35 7.375 37.25 1.75h42q20.5 0 37.25-1.75t35-7.375 30.5-15 20.25-25.75T360 304zm56-44q0 51.75-15.25 82.75-9.5 19.25-26.375 33.25t-35.25 21.5-42.5 11.875-42.875 5.5T212 416q-19.5 0-35.5-.75t-36.875-3.125-38.125-7.5-34.25-12.875T37 371.5t-21.5-28.75Q0 312 0 260q0-59.25 34-99-6.75-20.5-6.75-42.5 0-29 12.75-54.5 27 0 47.5 9.875t47.25 30.875Q171.5 96 212 96q37 0 70 8 26.25-20.5 46.75-30.25T376 64q12.75 25.5 12.75 54.5 0 21.75-6.75 42 34 40 34 99.5z"/></svg>
</defs>
</svg>
@ -94,7 +77,7 @@
<input class="md-toggle" data-md-toggle="search" type="checkbox" id="__search" autocomplete="off">
<label class="md-overlay" data-md-component="overlay" for="__drawer"></label>
<a href="#yq" tabindex="1" class="md-skip">
<a href="#new-documentation-website" tabindex="1" class="md-skip">
Skip to content
</a>
@ -118,9 +101,7 @@
<span class="md-header-nav__topic">
Yq
</span>
<span class="md-header-nav__topic">
Install
</span>
</div>
</div>
@ -128,28 +109,6 @@
<label class="md-icon md-icon--search md-header-nav__button" for="__search"></label>
<div class="md-search" data-md-component="search" role="dialog">
<label class="md-search__overlay" for="__search"></label>
<div class="md-search__inner" role="search">
<form class="md-search__form" name="search">
<input type="text" class="md-search__input" name="query" placeholder="Search" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false" data-md-component="query" data-md-state="active">
<label class="md-icon md-search__icon" for="__search"></label>
<button type="reset" class="md-icon md-search__icon" data-md-component="reset" tabindex="-1">
&#xE5CD;
</button>
</form>
<div class="md-search__output">
<div class="md-search__scrollwrap" data-md-scrollfix>
<div class="md-search-result" data-md-component="result">
<div class="md-search-result__meta">
Type to start searching
</div>
<ol class="md-search-result__list"></ol>
</div>
</div>
</div>
</div>
</div>
</div>
@ -184,251 +143,25 @@
<main class="md-main">
<main class="md-main" role="main">
<div class="md-main__inner md-grid" data-md-component="container">
<div class="md-sidebar md-sidebar--primary" data-md-component="navigation">
<div class="md-sidebar__scrollwrap">
<div class="md-sidebar__inner">
<nav class="md-nav md-nav--primary" data-md-level="0">
<label class="md-nav__title md-nav__title--site" for="__drawer">
<a href="." title="Yq" class="md-nav__button md-logo">
<i class="md-icon"></i>
</a>
Yq
</label>
<div class="md-nav__source">
<a href="https://github.com/mikefarah/yq/" title="Go to repository" class="md-source" data-md-source="github">
<div class="md-source__icon">
<svg viewBox="0 0 24 24" width="24" height="24">
<use xlink:href="#__github" width="24" height="24"></use>
</svg>
</div>
<div class="md-source__repository">
mikefarah/yq
</div>
</a>
</div>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item md-nav__item--active">
<input class="md-toggle md-nav__toggle" data-md-toggle="toc" type="checkbox" id="__toc">
<label class="md-nav__link md-nav__link--active" for="__toc">
Install
</label>
<a href="." title="Install" class="md-nav__link md-nav__link--active">
Install
</a>
<nav class="md-nav md-nav--secondary">
<label class="md-nav__title" for="__toc">Table of contents</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="#install" title="Install" class="md-nav__link">
Install
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="read/" title="Read" class="md-nav__link">
Read
</a>
</li>
<li class="md-nav__item">
<a href="write/" title="Write/Update" class="md-nav__link">
Write/Update
</a>
</li>
<li class="md-nav__item">
<a href="prefix/" title="Prefix" class="md-nav__link">
Prefix
</a>
</li>
<li class="md-nav__item">
<a href="delete/" title="Delete" class="md-nav__link">
Delete
</a>
</li>
<li class="md-nav__item">
<a href="create/" title="Create" class="md-nav__link">
Create
</a>
</li>
<li class="md-nav__item">
<a href="convert/" title="Convert" class="md-nav__link">
Convert
</a>
</li>
<li class="md-nav__item">
<a href="merge/" title="Merge" class="md-nav__link">
Merge
</a>
</li>
</ul>
</nav>
</div>
</div>
</div>
<div class="md-sidebar md-sidebar--secondary" data-md-component="toc">
<div class="md-sidebar__scrollwrap">
<div class="md-sidebar__inner">
<nav class="md-nav md-nav--secondary">
<label class="md-nav__title" for="__toc">Table of contents</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="#install" title="Install" class="md-nav__link">
Install
</a>
</li>
</ul>
</nav>
</div>
</div>
</div>
<div class="md-content">
<article class="md-content__inner md-typeset">
<a href="https://github.com/mikefarah/yq/edit/master/docs/index.md" title="Edit this page" class="md-icon md-content__icon">&#xE3C9;</a>
<h1>New documentation website</h1>
<h1 id="yq">yq<a class="headerlink" href="#yq" title="Permanent link">&para;</a></h1>
<p>yq is a lightweight and portable command-line YAML processor</p>
<p>The aim of the project is to be the <a href="https://github.com/stedolan/jq">jq</a> or sed of yaml files.</p>
<h2 id="install">Install<a class="headerlink" href="#install" title="Permanent link">&para;</a></h2>
<p>On MacOS:</p>
<pre><code>brew install yq
</code></pre>
<p>On Ubuntu and other Linux distros supporting <code>snap</code> packages:</p>
<pre><code>snap install yq
</code></pre>
<p>On Ubuntu 16.04 or higher from Debian package:</p>
<pre><code>sudo add-apt-repository ppa:rmescandon/yq
sudo apt update
sudo apt install yq -y
</code></pre>
<p>or, <a href="https://github.com/mikefarah/yq/releases/latest">Download latest binary</a> or alternatively:</p>
<pre><code>go get gopkg.in/mikefarah/yq.v2
</code></pre>
<p><a href="https://github.com/mikefarah/yq">View on GitHub</a></p>
<p>User docs are better than ever, and have been <a href="https://mikefarah.gitbook.io/yq">moved here</a></p>
@ -443,27 +176,6 @@ sudo apt install yq -y
<footer class="md-footer">
<div class="md-footer-nav">
<nav class="md-footer-nav__inner md-grid">
<a href="read/" title="Read" class="md-flex md-footer-nav__link md-footer-nav__link--next" rel="next">
<div class="md-flex__cell md-flex__cell--stretch md-footer-nav__title">
<span class="md-flex__ellipsis">
<span class="md-footer-nav__direction">
Next
</span>
Read
</span>
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</div>
</a>
</nav>
</div>
<div class="md-footer-meta md-typeset">
<div class="md-footer-meta__inner md-grid">
<div class="md-footer-copyright">
@ -475,22 +187,13 @@ sudo apt install yq -y
Material for MkDocs</a>
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<script>app.initialize({version:"1.0.4",url:{base:"."}})</script>

730
docs/merge/index.html
View File

@ -1,730 +0,0 @@
<!doctype html>
<html lang="en" class="no-js">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<meta name="lang:clipboard.copy" content="Copy to clipboard">
<meta name="lang:clipboard.copied" content="Copied to clipboard">
<meta name="lang:search.language" content="en">
<meta name="lang:search.pipeline.stopwords" content="True">
<meta name="lang:search.pipeline.trimmer" content="True">
<meta name="lang:search.result.none" content="No matching documents">
<meta name="lang:search.result.one" content="1 matching document">
<meta name="lang:search.result.other" content="# matching documents">
<meta name="lang:search.tokenizer" content="[\s\-]+">
<link rel="shortcut icon" href="../assets/images/favicon.png">
<meta name="generator" content="mkdocs-1.0.4, mkdocs-material-4.2.0">
<title>Merge - Yq</title>
<link rel="stylesheet" href="../assets/stylesheets/application.750b69bd.css">
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<link href="https://fonts.gstatic.com" rel="preconnect" crossorigin>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,400i,700|Roboto+Mono">
<style>body,input{font-family:"Roboto","Helvetica Neue",Helvetica,Arial,sans-serif}code,kbd,pre{font-family:"Roboto Mono","Courier New",Courier,monospace}</style>
<link rel="stylesheet" href="../assets/fonts/material-icons.css">
</head>
<body dir="ltr">
<svg class="md-svg">
<defs>
<svg xmlns="http://www.w3.org/2000/svg" width="416" height="448"
viewBox="0 0 416 448" id="__github">
<path fill="currentColor" d="M160 304q0 10-3.125 20.5t-10.75 19-18.125
8.5-18.125-8.5-10.75-19-3.125-20.5 3.125-20.5 10.75-19 18.125-8.5
18.125 8.5 10.75 19 3.125 20.5zM320 304q0 10-3.125 20.5t-10.75
19-18.125 8.5-18.125-8.5-10.75-19-3.125-20.5 3.125-20.5 10.75-19
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0-59.25 34-99-6.75-20.5-6.75-42.5 0-29 12.75-54.5 27 0 47.5 9.875t47.25
30.875q36.75-8.75 77.25-8.75 37 0 70 8 26.25-20.5
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</svg>
</defs>
</svg>
<input class="md-toggle" data-md-toggle="drawer" type="checkbox" id="__drawer" autocomplete="off">
<input class="md-toggle" data-md-toggle="search" type="checkbox" id="__search" autocomplete="off">
<label class="md-overlay" data-md-component="overlay" for="__drawer"></label>
<a href="#to-stdout" tabindex="1" class="md-skip">
Skip to content
</a>
<header class="md-header" data-md-component="header">
<nav class="md-header-nav md-grid">
<div class="md-flex">
<div class="md-flex__cell md-flex__cell--shrink">
<a href=".." title="Yq" class="md-header-nav__button md-logo">
<i class="md-icon"></i>
</a>
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<div class="md-flex__cell md-flex__cell--shrink">
<label class="md-icon md-icon--menu md-header-nav__button" for="__drawer"></label>
</div>
<div class="md-flex__cell md-flex__cell--stretch">
<div class="md-flex__ellipsis md-header-nav__title" data-md-component="title">
<span class="md-header-nav__topic">
Yq
</span>
<span class="md-header-nav__topic">
Merge
</span>
</div>
</div>
<div class="md-flex__cell md-flex__cell--shrink">
<label class="md-icon md-icon--search md-header-nav__button" for="__search"></label>
<div class="md-search" data-md-component="search" role="dialog">
<label class="md-search__overlay" for="__search"></label>
<div class="md-search__inner" role="search">
<form class="md-search__form" name="search">
<input type="text" class="md-search__input" name="query" placeholder="Search" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false" data-md-component="query" data-md-state="active">
<label class="md-icon md-search__icon" for="__search"></label>
<button type="reset" class="md-icon md-search__icon" data-md-component="reset" tabindex="-1">
&#xE5CD;
</button>
</form>
<div class="md-search__output">
<div class="md-search__scrollwrap" data-md-scrollfix>
<div class="md-search-result" data-md-component="result">
<div class="md-search-result__meta">
Type to start searching
</div>
<ol class="md-search-result__list"></ol>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="md-flex__cell md-flex__cell--shrink">
<div class="md-header-nav__source">
<a href="https://github.com/mikefarah/yq/" title="Go to repository" class="md-source" data-md-source="github">
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<svg viewBox="0 0 24 24" width="24" height="24">
<use xlink:href="#__github" width="24" height="24"></use>
</svg>
</div>
<div class="md-source__repository">
mikefarah/yq
</div>
</a>
</div>
</div>
</div>
</nav>
</header>
<div class="md-container">
<main class="md-main">
<div class="md-main__inner md-grid" data-md-component="container">
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<div class="md-sidebar__scrollwrap">
<div class="md-sidebar__inner">
<nav class="md-nav md-nav--primary" data-md-level="0">
<label class="md-nav__title md-nav__title--site" for="__drawer">
<a href=".." title="Yq" class="md-nav__button md-logo">
<i class="md-icon"></i>
</a>
Yq
</label>
<div class="md-nav__source">
<a href="https://github.com/mikefarah/yq/" title="Go to repository" class="md-source" data-md-source="github">
<div class="md-source__icon">
<svg viewBox="0 0 24 24" width="24" height="24">
<use xlink:href="#__github" width="24" height="24"></use>
</svg>
</div>
<div class="md-source__repository">
mikefarah/yq
</div>
</a>
</div>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href=".." title="Install" class="md-nav__link">
Install
</a>
</li>
<li class="md-nav__item">
<a href="../read/" title="Read" class="md-nav__link">
Read
</a>
</li>
<li class="md-nav__item">
<a href="../write/" title="Write/Update" class="md-nav__link">
Write/Update
</a>
</li>
<li class="md-nav__item">
<a href="../prefix/" title="Prefix" class="md-nav__link">
Prefix
</a>
</li>
<li class="md-nav__item">
<a href="../delete/" title="Delete" class="md-nav__link">
Delete
</a>
</li>
<li class="md-nav__item">
<a href="../create/" title="Create" class="md-nav__link">
Create
</a>
</li>
<li class="md-nav__item">
<a href="../convert/" title="Convert" class="md-nav__link">
Convert
</a>
</li>
<li class="md-nav__item md-nav__item--active">
<input class="md-toggle md-nav__toggle" data-md-toggle="toc" type="checkbox" id="__toc">
<label class="md-nav__link md-nav__link--active" for="__toc">
Merge
</label>
<a href="./" title="Merge" class="md-nav__link md-nav__link--active">
Merge
</a>
<nav class="md-nav md-nav--secondary">
<label class="md-nav__title" for="__toc">Table of contents</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="#to-stdout" title="To Stdout" class="md-nav__link">
To Stdout
</a>
</li>
<li class="md-nav__item">
<a href="#updating-files-in-place" title="Updating files in-place" class="md-nav__link">
Updating files in-place
</a>
</li>
<li class="md-nav__item">
<a href="#overwrite-values" title="Overwrite values" class="md-nav__link">
Overwrite values
</a>
</li>
<li class="md-nav__item">
<a href="#overwrite-values-with-arrays" title="Overwrite values with arrays" class="md-nav__link">
Overwrite values with arrays
</a>
</li>
<li class="md-nav__item">
<a href="#append-values-with-arrays" title="Append values with arrays" class="md-nav__link">
Append values with arrays
</a>
</li>
<li class="md-nav__item">
<a href="#multiple-documents-merge-into-single-document" title="Multiple Documents - merge into single document" class="md-nav__link">
Multiple Documents - merge into single document
</a>
</li>
<li class="md-nav__item">
<a href="#multiple-documents-merge-into-all-documents" title="Multiple Documents - merge into all documents" class="md-nav__link">
Multiple Documents - merge into all documents
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</div>
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Updating files in-place
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Overwrite values
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Overwrite values with arrays
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Multiple Documents - merge into single document
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Multiple Documents - merge into all documents
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<a href="https://github.com/mikefarah/yq/edit/master/docs/merge.md" title="Edit this page" class="md-icon md-content__icon">&#xE3C9;</a>
<h1>Merge</h1>
<p>Yaml files can be merged using the 'merge' command. Each additional file merged with the first file will
set values for any key not existing already or where the key has no value.</p>
<pre><code>yq m &lt;yaml_file&gt; &lt;path&gt;...
</code></pre>
<h3 id="to-stdout">To Stdout<a class="headerlink" href="#to-stdout" title="Permanent link">&para;</a></h3>
<p>Given a data1.yaml file of:</p>
<pre><code class="yaml">a: simple
b: [1, 2]
</code></pre>
<p>and data2.yaml file of:</p>
<pre><code class="yaml">a: other
c:
test: 1
</code></pre>
<p>then</p>
<pre><code class="bash">yq m data1.yaml data2.yaml
</code></pre>
<p>will output:</p>
<pre><code class="yaml">a: simple
b: [1, 2]
c:
test: 1
</code></pre>
<h3 id="updating-files-in-place">Updating files in-place<a class="headerlink" href="#updating-files-in-place" title="Permanent link">&para;</a></h3>
<p>Given a data1.yaml file of:</p>
<pre><code class="yaml">a: simple
b: [1, 2]
</code></pre>
<p>and data2.yaml file of:</p>
<pre><code class="yaml">a: other
c:
test: 1
</code></pre>
<p>then</p>
<pre><code class="bash">yq m -i data1.yaml data2.yaml
</code></pre>
<p>will update the data1.yaml file so that the value of 'c' is 'test: 1'.</p>
<h3 id="overwrite-values">Overwrite values<a class="headerlink" href="#overwrite-values" title="Permanent link">&para;</a></h3>
<p>Given a data1.yaml file of:</p>
<pre><code class="yaml">a: simple
b: [1, 2]
</code></pre>
<p>and data2.yaml file of:</p>
<pre><code class="yaml">a: other
c:
test: 1
</code></pre>
<p>then</p>
<pre><code class="bash">yq m -x data1.yaml data2.yaml
</code></pre>
<p>will output:</p>
<pre><code class="yaml">a: other
b: [1, 2]
c:
test: 1
</code></pre>
<h3 id="overwrite-values-with-arrays">Overwrite values with arrays<a class="headerlink" href="#overwrite-values-with-arrays" title="Permanent link">&para;</a></h3>
<p>Given a data1.yaml file of:</p>
<pre><code class="yaml">a: simple
b: [1, 2]
</code></pre>
<p>and data3.yaml file of:</p>
<pre><code class="yaml">b: [3, 4]
c:
test: 2
other: true
d: false
</code></pre>
<p>then</p>
<pre><code class="bash">yq m -x data1.yaml data3.yaml
</code></pre>
<p>will output:</p>
<pre><code class="yaml">a: simple
b: [3, 4]
c:
test: 2
other: true
d: false
</code></pre>
<p>Notice that 'b' does not result in the merging of the values within an array. </p>
<h3 id="append-values-with-arrays">Append values with arrays<a class="headerlink" href="#append-values-with-arrays" title="Permanent link">&para;</a></h3>
<p>Given a data1.yaml file of:</p>
<pre><code class="yaml">a: simple
b: [1, 2]
d: hi
</code></pre>
<p>and data3.yaml file of:</p>
<pre><code class="yaml">a: something
b: [3, 4]
c:
test: 2
other: true
</code></pre>
<p>then</p>
<pre><code class="bash">yq m -a data1.yaml data3.yaml
</code></pre>
<p>will output:</p>
<pre><code class="yaml">a: simple
b: [1, 2, 3, 4]
c:
test: 2
other: true
d: hi
</code></pre>
<p>Note that the 'b' array has concatenated the values from the second data file. Also note that other map keys are not overridden (field a).</p>
<p>Append cannot be used with overwrite, if both flags are given then append is ignored.</p>
<h3 id="multiple-documents-merge-into-single-document">Multiple Documents - merge into single document<a class="headerlink" href="#multiple-documents-merge-into-single-document" title="Permanent link">&para;</a></h3>
<p>Currently yq only has multi-document support for the <em>first</em> document being merged into. The remaining yaml files will have their first document selected.</p>
<p>Given a data1.yaml file of:</p>
<pre><code class="yaml">something: else
---
a: simple
b: cat
</code></pre>
<p>and data3.yaml file of:</p>
<pre><code class="yaml">b: dog
</code></pre>
<p>then</p>
<pre><code class="bash">yq m -x -d1 data1.yaml data3.yaml
</code></pre>
<p>will output:</p>
<pre><code class="yaml">something: else
---
a: simple
b: dog
</code></pre>
<h3 id="multiple-documents-merge-into-all-documents">Multiple Documents - merge into all documents<a class="headerlink" href="#multiple-documents-merge-into-all-documents" title="Permanent link">&para;</a></h3>
<p>Currently yq only has multi-document support for the <em>first</em> document being merged into. The remaining yaml files will have their first document selected.</p>
<p>Given a data1.yaml file of:</p>
<pre><code class="yaml">something: else
---
a: simple
b: cat
</code></pre>
<p>and data3.yaml file of:</p>
<pre><code class="yaml">b: dog
</code></pre>
<p>then</p>
<pre><code class="bash">yq m -x -d'*' data1.yaml data3.yaml
</code></pre>
<p>will output:</p>
<pre><code class="yaml">b: dog
something: else
---
a: simple
b: dog
</code></pre>
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<h1>Prefix</h1>
<p>Paths can be prefixed using the 'prefix' command.
The complete yaml content will be nested inside the new prefix path.</p>
<pre><code>yq p &lt;yaml_file&gt; &lt;path&gt;
</code></pre>
<h3 id="to-stdout">To Stdout<a class="headerlink" href="#to-stdout" title="Permanent link">&para;</a></h3>
<p>Given a data1.yaml file of:</p>
<pre><code class="yaml">a: simple
b: [1, 2]
</code></pre>
<p>then</p>
<pre><code class="bash">yq p data1.yaml c
</code></pre>
<p>will output:</p>
<pre><code class="yaml">c:
a: simple
b: [1, 2]
</code></pre>
<h3 id="arbitrary-depth">Arbitrary depth<a class="headerlink" href="#arbitrary-depth" title="Permanent link">&para;</a></h3>
<p>Given a data1.yaml file of:</p>
<pre><code class="yaml">a:
b: [1, 2]
</code></pre>
<p>then</p>
<pre><code class="bash">yq p data1.yaml c.d
</code></pre>
<p>will output:</p>
<pre><code class="yaml">c:
d:
a:
b: [1, 2]
</code></pre>
<h3 id="updating-files-in-place">Updating files in-place<a class="headerlink" href="#updating-files-in-place" title="Permanent link">&para;</a></h3>
<p>Given a data1.yaml file of:</p>
<pre><code class="yaml">a: simple
b: [1, 2]
</code></pre>
<p>then</p>
<pre><code class="bash">yq p -i data1.yaml c
</code></pre>
<p>will update the data1.yaml file so that the path 'c' is prefixed to all other paths.</p>
<h3 id="multiple-documents-prefix-a-single-document">Multiple Documents - prefix a single document<a class="headerlink" href="#multiple-documents-prefix-a-single-document" title="Permanent link">&para;</a></h3>
<p>Given a data1.yaml file of:</p>
<pre><code class="yaml">something: else
---
a: simple
b: cat
</code></pre>
<p>then</p>
<pre><code class="bash">yq p -d1 data1.yaml c
</code></pre>
<p>will output:</p>
<pre><code class="yaml">something: else
---
c:
a: simple
b: cat
</code></pre>
<h3 id="multiple-documents-prefix-all-documents">Multiple Documents - prefix all documents<a class="headerlink" href="#multiple-documents-prefix-all-documents" title="Permanent link">&para;</a></h3>
<p>Given a data1.yaml file of:</p>
<pre><code class="yaml">something: else
---
a: simple
b: cat
</code></pre>
<p>then</p>
<pre><code class="bash">yq p -d'*' data1.yaml c
</code></pre>
<p>will output:</p>
<pre><code class="yaml">c:
something: else
---
c:
a: simple
b: cat
</code></pre>
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Multiple Documents - specify a single document
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Multiple Documents - read all documents
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Arrays
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Array Splat
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<h1>Read</h1>
<pre><code>yq r &lt;yaml_file|json_file&gt; &lt;path&gt;
</code></pre>
<p>This command can take a json file as input too, and will output yaml unless specified to export as json (-j)</p>
<h3 id="basic">Basic<a class="headerlink" href="#basic" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">b:
c: 2
</code></pre>
<p>then</p>
<pre><code class="bash">yq r sample.yaml b.c
</code></pre>
<p>will output the value of '2'.</p>
<h3 id="from-stdin">From Stdin<a class="headerlink" href="#from-stdin" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="bash">cat sample.yaml | yq r - b.c
</code></pre>
<p>will output the value of '2'.</p>
<h3 id="splat">Splat<a class="headerlink" href="#splat" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">---
bob:
item1:
cats: bananas
item2:
cats: apples
thing:
cats: oranges
</code></pre>
<p>then</p>
<pre><code class="bash">yq r sample.yaml bob.*.cats
</code></pre>
<p>will output</p>
<pre><code class="yaml">- bananas
- apples
- oranges
</code></pre>
<h3 id="prefix-splat">Prefix Splat<a class="headerlink" href="#prefix-splat" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">---
bob:
item1:
cats: bananas
item2:
cats: apples
thing:
cats: oranges
</code></pre>
<p>then</p>
<pre><code class="bash">yq r sample.yaml bob.item*.cats
</code></pre>
<p>will output</p>
<pre><code class="yaml">- bananas
- apples
</code></pre>
<h3 id="multiple-documents-specify-a-single-document">Multiple Documents - specify a single document<a class="headerlink" href="#multiple-documents-specify-a-single-document" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">something: else
---
b:
c: 2
</code></pre>
<p>then</p>
<pre><code class="bash">yq r -d1 sample.yaml b.c
</code></pre>
<p>will output the value of '2'.</p>
<h3 id="multiple-documents-read-all-documents">Multiple Documents - read all documents<a class="headerlink" href="#multiple-documents-read-all-documents" title="Permanent link">&para;</a></h3>
<p>Reading all documents will return the result as an array. This can be converted to json using the '-j' flag if desired.</p>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">name: Fred
age: 22
---
name: Stella
age: 23
---
name: Android
age: 232
</code></pre>
<p>then</p>
<pre><code class="bash">yq r -d'*' sample.yaml name
</code></pre>
<p>will output:</p>
<pre><code>- Fred
- Stella
- Android
</code></pre>
<h3 id="arrays">Arrays<a class="headerlink" href="#arrays" title="Permanent link">&para;</a></h3>
<p>You can give an index to access a specific element:
e.g.: given a sample file of</p>
<pre><code class="yaml">b:
e:
- name: fred
value: 3
- name: sam
value: 4
</code></pre>
<p>then</p>
<pre><code>yq r sample.yaml 'b.e[1].name'
</code></pre>
<p>will output 'sam'</p>
<p>Note that the path is in quotes to avoid the square brackets being interpreted by your shell.</p>
<h3 id="array-splat">Array Splat<a class="headerlink" href="#array-splat" title="Permanent link">&para;</a></h3>
<p>e.g.: given a sample file of</p>
<pre><code class="yaml">b:
e:
- name: fred
value: 3
- name: sam
value: 4
</code></pre>
<p>then</p>
<pre><code>yq r sample.yaml 'b.e[*].name'
</code></pre>
<p>will output:</p>
<pre><code>- fred
- sam
</code></pre>
<p>Note that the path is in quotes to avoid the square brackets being interpreted by your shell.</p>
<h3 id="keys-with-dots">Keys with dots<a class="headerlink" href="#keys-with-dots" title="Permanent link">&para;</a></h3>
<p>When specifying a key that has a dot use key lookup indicator.</p>
<pre><code class="yaml">b:
foo.bar: 7
</code></pre>
<pre><code class="bash">yaml r sample.yaml 'b[foo.bar]'
</code></pre>
<pre><code class="bash">yaml w sample.yaml 'b[foo.bar]' 9
</code></pre>
<p>Any valid yaml key can be specified as part of a key lookup.</p>
<p>Note that the path is in quotes to avoid the square brackets being interpreted by your shell.</p>
<h3 id="keys-and-values-with-leading-dashes">Keys (and values) with leading dashes<a class="headerlink" href="#keys-and-values-with-leading-dashes" title="Permanent link">&para;</a></h3>
<p>If a key or value has leading dashes, yq won't know that you are passing a value as opposed to a flag (and you will get a 'bad flag syntax' error).</p>
<p>To fix that, you will need to tell it to stop processing flags by adding '--' after the last flag like so:</p>
<pre><code class="bash">yq n -t -- --key --value
</code></pre>
<p>Will result in</p>
<p><code>`
--key: --value</code></p>
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<h1>Niche</h1>
<h3 id="keys-with-dots">Keys with dots<a class="headerlink" href="#keys-with-dots" title="Permanent link">&para;</a></h3>
<p>When specifying a key that has a dot use key lookup indicator.</p>
<pre><code class="yaml">b:
foo.bar: 7
</code></pre>
<pre><code class="bash">yaml r sample.yaml 'b[foo.bar]'
</code></pre>
<pre><code class="bash">yaml w sample.yaml 'b[foo.bar]' 9
</code></pre>
<p>Any valid yaml key can be specified as part of a key lookup.</p>
<p>Note that the path is in quotes to avoid the square brackets being interpreted by your shell.</p>
<h3 id="keys-and-values-with-leading-dashes">Keys (and values) with leading dashes<a class="headerlink" href="#keys-and-values-with-leading-dashes" title="Permanent link">&para;</a></h3>
<p>If a key or value has leading dashes, yq won't know that you are passing a value as opposed to a flag (and you will get a 'bad flag syntax' error).</p>
<p>To fix that, you will need to tell it to stop processing flags by adding '--' after the last flag like so:</p>
<pre><code class="bash">yq n -t -- --key --value
</code></pre>
<p>Will result in</p>
<pre><code>--key: --value
</code></pre>
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<h1>Works with json</h1>
<p>This command can take a json file as input too, and will output yaml unless specified to export as json (-j)</p>
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Adding new fields
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Splat
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Prefix Splat
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Array Splat
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Appending value to an array field
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Multiple Documents - update a single document
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Multiple Documents - update all documents
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Updating files in-place
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Updating multiple values with a script
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Values starting with a hyphen (or dash)
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Keys with dots
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From STDIN
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Adding new fields
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Splat
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Prefix Splat
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Array Splat
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Appending value to an array field
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<a href="#multiple-documents-update-a-single-document" title="Multiple Documents - update a single document" class="md-nav__link">
Multiple Documents - update a single document
</a>
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Multiple Documents - update all documents
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Updating files in-place
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Updating multiple values with a script
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Values starting with a hyphen (or dash)
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Keys with dots
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<a href="https://github.com/mikefarah/yq/edit/master/docs/write.md" title="Edit this page" class="md-icon md-content__icon">&#xE3C9;</a>
<h1>Write/Update</h1>
<pre><code>yq w &lt;yaml_file&gt; &lt;path&gt; &lt;new value&gt;
</code></pre>
<h3 id="to-stdout">To Stdout<a class="headerlink" href="#to-stdout" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">b:
c: 2
</code></pre>
<p>then</p>
<pre><code class="bash">yq w sample.yaml b.c cat
</code></pre>
<p>will output:</p>
<pre><code class="yaml">b:
c: cat
</code></pre>
<h3 id="from-stdin">From STDIN<a class="headerlink" href="#from-stdin" title="Permanent link">&para;</a></h3>
<pre><code class="bash">cat sample.yaml | yq w - b.c blah
</code></pre>
<h3 id="adding-new-fields">Adding new fields<a class="headerlink" href="#adding-new-fields" title="Permanent link">&para;</a></h3>
<p>Any missing fields in the path will be created on the fly.</p>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">b:
c: 2
</code></pre>
<p>then</p>
<pre><code class="bash">yq w sample.yaml b.d[+] &quot;new thing&quot;
</code></pre>
<p>will output:</p>
<pre><code class="yaml">b:
c: cat
d:
- new thing
</code></pre>
<h3 id="splat">Splat<a class="headerlink" href="#splat" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">---
bob:
item1:
cats: bananas
item2:
cats: apples
thing:
cats: oranges
</code></pre>
<p>then</p>
<pre><code class="bash">yq w sample.yaml bob.*.cats meow
</code></pre>
<p>will output:</p>
<pre><code class="yaml">---
bob:
item1:
cats: meow
item2:
cats: meow
thing:
cats: meow
</code></pre>
<h3 id="prefix-splat">Prefix Splat<a class="headerlink" href="#prefix-splat" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">---
bob:
item1:
cats: bananas
item2:
cats: apples
thing:
cats: oranges
</code></pre>
<p>then</p>
<pre><code class="bash">yq w sample.yaml bob.item*.cats meow
</code></pre>
<p>will output:</p>
<pre><code class="yaml">---
bob:
item1:
cats: meow
item2:
cats: meow
thing:
cats: oranges
</code></pre>
<h3 id="array-splat">Array Splat<a class="headerlink" href="#array-splat" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">---
bob:
- cats: bananas
- cats: apples
- cats: oranges
</code></pre>
<p>then</p>
<pre><code class="bash">yq w sample.yaml bob[*].cats meow
</code></pre>
<p>will output:</p>
<pre><code class="yaml">---
bob:
- cats: meow
- cats: meow
- cats: meow
</code></pre>
<h3 id="appending-value-to-an-array-field">Appending value to an array field<a class="headerlink" href="#appending-value-to-an-array-field" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">b:
c: 2
d:
- new thing
- foo thing
</code></pre>
<p>then</p>
<pre><code class="bash">yq w sample.yaml &quot;b.d[+]&quot; &quot;bar thing&quot;
</code></pre>
<p>will output:</p>
<pre><code class="yaml">b:
c: cat
d:
- new thing
- foo thing
- bar thing
</code></pre>
<p>Note that the path is in quotes to avoid the square brackets being interpreted by your shell.</p>
<h3 id="multiple-documents-update-a-single-document">Multiple Documents - update a single document<a class="headerlink" href="#multiple-documents-update-a-single-document" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">something: else
---
b:
c: 2
</code></pre>
<p>then</p>
<pre><code class="bash">yq w -d1 sample.yaml b.c 5
</code></pre>
<p>will output:</p>
<pre><code class="yaml">something: else
---
b:
c: 5
</code></pre>
<h3 id="multiple-documents-update-all-documents">Multiple Documents - update all documents<a class="headerlink" href="#multiple-documents-update-all-documents" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">something: else
---
b:
c: 2
</code></pre>
<p>then</p>
<pre><code class="bash">yq w -d'*' sample.yaml b.c 5
</code></pre>
<p>will output:</p>
<pre><code class="yaml">something: else
b:
c: 5
---
b:
c: 5
</code></pre>
<p>Note that '*' is in quotes to avoid being interpreted by your shell.</p>
<h3 id="updating-files-in-place">Updating files in-place<a class="headerlink" href="#updating-files-in-place" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">b:
c: 2
</code></pre>
<p>then</p>
<pre><code class="bash">yq w -i sample.yaml b.c cat
</code></pre>
<p>will update the sample.yaml file so that the value of 'c' is cat.</p>
<h3 id="updating-multiple-values-with-a-script">Updating multiple values with a script<a class="headerlink" href="#updating-multiple-values-with-a-script" title="Permanent link">&para;</a></h3>
<p>Given a sample.yaml file of:</p>
<pre><code class="yaml">b:
c: 2
e:
- name: Billy Bob
</code></pre>
<p>and a script update_instructions.yaml of:</p>
<pre><code class="yaml">b.c: 3
b.e[+].name: Howdy Partner
</code></pre>
<p>then</p>
<pre><code class="bash">yq w -s update_instructions.yaml sample.yaml
</code></pre>
<p>will output:</p>
<pre><code class="yaml">b:
c: 3
e:
- name: Howdy Partner
</code></pre>
<p>And, of course, you can pipe the instructions in using '-':</p>
<pre><code class="bash">cat update_instructions.yaml | yq w -s - sample.yaml
</code></pre>
<h3 id="values-starting-with-a-hyphen-or-dash">Values starting with a hyphen (or dash)<a class="headerlink" href="#values-starting-with-a-hyphen-or-dash" title="Permanent link">&para;</a></h3>
<p>The flag terminator needs to be used to stop the app from attempting to parse the subsequent arguments as flags:</p>
<pre><code>yq w -- my.path -3
</code></pre>
<p>will output</p>
<pre><code class="yaml">my:
path: -3
</code></pre>
<h3 id="keys-with-dots">Keys with dots<a class="headerlink" href="#keys-with-dots" title="Permanent link">&para;</a></h3>
<p>When specifying a key that has a dot use key lookup indicator.</p>
<pre><code class="yaml">b:
foo.bar: 7
</code></pre>
<pre><code class="bash">yaml r sample.yaml 'b[foo.bar]'
</code></pre>
<pre><code class="bash">yaml w sample.yaml 'b[foo.bar]' 9
</code></pre>
<p>Any valid yaml key can be specified as part of a key lookup.</p>
<p>Note that the path is in quotes to avoid the square brackets being interpreted by your shell.</p>
<h3 id="keys-and-values-with-leading-dashes">Keys (and values) with leading dashes<a class="headerlink" href="#keys-and-values-with-leading-dashes" title="Permanent link">&para;</a></h3>
<p>If a key or value has leading dashes, yq won't know that you are passing a value as opposed to a flag (and you will get a 'bad flag syntax' error).</p>
<p>To fix that, you will need to tell it to stop processing flags by adding '--' after the last flag like so:</p>
<pre><code class="bash">yq n -t -- --key --value
</code></pre>
<p>Will result in</p>
<p><code>`
--key: --value</code></p>
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2
examples/array.yaml
View File

@ -7,3 +7,5 @@
- lala
- land
serial: 1
- become: false
gather_facts: true

4
examples/data1.yaml
View File

@ -1,2 +1,4 @@
a: simple
a: simple # just the best
b: [1, 2]
c:
test: 1

5
examples/data2.yaml
View File

@ -1,4 +1,7 @@
a: other
a: other # better than the original
b: [3, 4]
c:
toast: leave
test: 1
tell: 1
taco: cool

9
examples/instruction_sample.yaml
View File

@ -1,2 +1,7 @@
b.c: cat
b.e[+].name: Mike Farah
- command: update
path: b.c
value:
#great
things: frog # wow!
- command: delete
path: b.d

19
examples/merge-anchor.yaml Normal file
View File

@ -0,0 +1,19 @@
foo: &foo
a: original
thing: coolasdf
thirsty: yep
bar: &bar
b: 2
thing: coconut
c: oldbar
foobarList:
<<: [*foo,*bar]
c: newbar
foobar:
<<: *foo
thirty: well beyond
thing: ice
c: 3

4
examples/sample.yaml
View File

@ -1,7 +1,7 @@
a: Easy! as one two three
a: true
b:
c: 2
d: [3, 4]
d: [3, 4, 5]
e:
- name: fred
value: 3

9
examples/sample2.yaml
View File

@ -1,9 +1,2 @@
a: Easy! as one two three
b:
c: things
d: whatever
things:
thing1:
cat: 'fred'
thing2:
cat: 'sam'
c: things

3
examples/sample_array_2.yaml
View File

@ -1 +1,2 @@
[4,5]
- 4
- 5

4
examples/simple-anchor.yaml Normal file
View File

@ -0,0 +1,4 @@
foo: &foo
a: 1
foobar: *foo

8
go.mod
View File

@ -1,12 +1,12 @@
module github.com/mikefarah/yq/v2
module github.com/mikefarah/yq/v3
require (
github.com/mikefarah/yaml/v2 v2.4.0
github.com/pkg/errors v0.8.1
github.com/spf13/cobra v0.0.5
golang.org/x/tools v0.0.0-20191030203535-5e247c9ad0a0 // indirect
gopkg.in/imdario/mergo.v0 v0.3.7
golang.org/x/tools v0.0.0-20191213221258-04c2e8eff935 // indirect
gopkg.in/imdario/mergo.v0 v0.3.7 // indirect
gopkg.in/op/go-logging.v1 v1.0.0-20160211212156-b2cb9fa56473
gopkg.in/yaml.v3 v3.0.0-20191120175047-4206685974f2
)
go 1.13

12
go.sum
View File

@ -10,8 +10,11 @@ github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T
github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
github.com/mikefarah/yaml v2.1.0+incompatible h1:nu2cqmzk4WlWJNgnevY88faMcdrDzYGcsUjYFxEpB7Y=
github.com/mikefarah/yaml/v2 v2.4.0 h1:eYqfooY0BnvKTJxr7+ABJs13n3dg9n347GScDaU2Lww=
github.com/mikefarah/yaml/v2 v2.4.0/go.mod h1:ahVqZF4n1W4NqwvVnZzC4es67xsW9uR/RRf2RRxieJU=
github.com/mikefarah/yq v2.4.0+incompatible h1:oBxbWy8R9hI3BIUUxEf0CzikWa2AgnGrGhvGQt5jgjk=
github.com/mikefarah/yq/v2 v2.4.1 h1:tajDonaFK6WqitSZExB6fKlWQy/yCkptqxh2AXEe3N4=
github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
@ -32,14 +35,21 @@ github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljT
github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/tools v0.0.0-20191030203535-5e247c9ad0a0 h1:s5lp4ug7qHzUccgyFdjsX7OZDzHXRaePrF3B3vmUiuM=
golang.org/x/tools v0.0.0-20191030203535-5e247c9ad0a0/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20191213221258-04c2e8eff935 h1:kJQZhwFzSwJS2BxboKjdZzWczQOZx8VuH7Y8hhuGUtM=
golang.org/x/tools v0.0.0-20191213221258-04c2e8eff935/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/imdario/mergo.v0 v0.3.7 h1:QDotlIZtaO/p+Um0ok18HRTpq5i5/SAk/qprsor+9c8=
@ -48,3 +58,5 @@ gopkg.in/op/go-logging.v1 v1.0.0-20160211212156-b2cb9fa56473 h1:6D+BvnJ/j6e222UW
gopkg.in/op/go-logging.v1 v1.0.0-20160211212156-b2cb9fa56473/go.mod h1:N1eN2tsCx0Ydtgjl4cqmbRCsY4/+z4cYDeqwZTk6zog=
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v3 v3.0.0-20191120175047-4206685974f2 h1:XZx7nhd5GMaZpmDaEHFVafUZC7ya0fuo7cSJ3UCKYmM=
gopkg.in/yaml.v3 v3.0.0-20191120175047-4206685974f2/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

21
mkdocs.yml
View File

@ -2,27 +2,6 @@ docs_dir: mkdocs
site_dir: docs
site_name: Yq
theme: 'material'
pages:
- Install: index.md
- Read: read.md
- Write/Update: write.md
- Prefix: prefix.md
- Delete: delete.md
- Create: create.md
- Convert: convert.md
- Merge: merge.md
repo_name: 'mikefarah/yq'
repo_url: 'https://github.com/mikefarah/yq'
extra:
social:
- type: 'github'
link: 'https://github.com/mikefarah'
- type: 'linkedin'
link: 'https://www.linkedin.com/in/mike-farah-b5a75b2/'
markdown_extensions:
- markdown_include.include:
base_path: mkdocs
- toc:
permalink: True

40
mkdocs/convert.md
View File

@ -1,40 +0,0 @@
### Yaml to Json
To convert output to json, use the --tojson (or -j) flag. This can only be used with the read command.
Given a sample.yaml file of:
```yaml
b:
c: 2
```
then
```bash
yq r -j sample.yaml b.c
```
will output
```json
{"b":{"c":2}}
```
### Json to Yaml
To read in json, just pass in a json file instead of yaml, it will just work :)
e.g given a json file
```json
{"a":"Easy! as one two three","b":{"c":2,"d":[3,4]}}
```
then
```bash
yq r sample.json
```
will output
```yaml
a: Easy! as one two three
b:
c: 2
d:
- 3
- 4
```

44
mkdocs/create.md
View File

@ -1,44 +0,0 @@
Yaml files can be created using the 'new' command. This works in the same way as the write command, but you don't pass in an existing Yaml file. Currently this does not support creating multiple documents in a single yaml file.
```
yq n <path> <new value>
```
### Creating a simple yaml file
```bash
yq n b.c cat
```
will output:
```yaml
b:
c: cat
```
### Creating using a create script
Create scripts follow the same format as the update scripts.
Given a script create_instructions.yaml of:
```yaml
b.c: 3
b.e[+].name: Howdy Partner
```
then
```bash
yq n -s create_instructions.yaml
```
will output:
```yaml
b:
c: 3
e:
- name: Howdy Partner
```
You can also pipe the instructions in:
```bash
cat create_instructions.yaml | yq n -s -
```
{!snippets/niche.md!}

197
mkdocs/delete.md
View File

@ -1,197 +0,0 @@
```
yq d <yaml_file> <path_to_delete>
```
### To Stdout
Given a sample.yaml file of:
```yaml
b:
c: 2
apples: green
```
then
```bash
yq d sample.yaml b.c
```
will output:
```yaml
b:
apples: green
```
### From STDIN
```bash
cat sample.yaml | yq d - b.c
```
### Deleting array elements
Given a sample.yaml file of:
```yaml
b:
c:
- 1
- 2
- 3
```
then
```bash
yq d sample.yaml 'b.c[1]'
```
will output:
```yaml
b:
c:
- 1
- 3
```
### Deleting nodes in-place
Given a sample.yaml file of:
```yaml
b:
c: 2
apples: green
```
then
```bash
yq d -i sample.yaml b.c
```
will update the sample.yaml file so that the 'c' node is deleted
### Splat
Given a sample.yaml file of:
```yaml
---
bob:
item1:
cats: bananas
dogs: woof
item2:
cats: apples
dogs: woof2
thing:
cats: oranges
dogs: woof3
```
then
```bash
yq d sample.yaml bob.*.cats
```
will output:
```yaml
---
bob:
item1:
dogs: woof
item2:
dogs: woof2
thing:
dogs: woof3
```
### Prefix Splat
Given a sample.yaml file of:
```yaml
---
bob:
item1:
cats: bananas
dogs: woof
item2:
cats: apples
dogs: woof2
thing:
cats: oranges
dogs: woof3
```
then
```bash
yq d sample.yaml bob.item*.cats
```
will output:
```yaml
---
bob:
item1:
dogs: woof
item2:
dogs: woof2
thing:
cats: oranges
dogs: woof3
```
### Array Splat
Given a sample.yaml file of:
```yaml
---
bob:
- cats: bananas
dogs: woof
- cats: apples
dogs: woof2
- cats: oranges
dogs: woof3
```
then
```bash
yq d sample.yaml bob.[*].cats
```
will output:
```yaml
---
bob:
- dogs: woof
- dogs: woof2
- dogs: woof3
```
### Multiple Documents - delete from single document
Given a sample.yaml file of:
```yaml
something: else
field: leaveMe
---
b:
c: 2
field: deleteMe
```
then
```bash
yq w -d1 sample.yaml field
```
will output:
```yaml
something: else
field: leaveMe
---
b:
c: 2
```
### Multiple Documents - delete from all documents
Given a sample.yaml file of:
```yaml
something: else
field: deleteMe
---
b:
c: 2
field: deleteMeToo
```
then
```bash
yq w -d'*' sample.yaml field
```
will output:
```yaml
something: else
---
b:
c: 2
```
Note that '*' is in quotes to avoid being interpreted by your shell.
{!snippets/niche.md!}

26
mkdocs/index.md
View File

@ -1,26 +0,0 @@
# yq
yq is a lightweight and portable command-line YAML processor
The aim of the project is to be the [jq](https://github.com/stedolan/jq) or sed of yaml files.
## Install
On MacOS:
```
brew install yq
```
On Ubuntu and other Linux distros supporting `snap` packages:
```
snap install yq
```
On Ubuntu 16.04 or higher from Debian package:
```
sudo add-apt-repository ppa:rmescandon/yq
sudo apt update
sudo apt install yq -y
```
or, [Download latest binary](https://github.com/mikefarah/yq/releases/latest) or alternatively:
```
go get gopkg.in/mikefarah/yq.v2
```
[View on GitHub](https://github.com/mikefarah/yq)

189
mkdocs/merge.md
View File

@ -1,189 +0,0 @@
Yaml files can be merged using the 'merge' command. Each additional file merged with the first file will
set values for any key not existing already or where the key has no value.
```
yq m <yaml_file> <path>...
```
### To Stdout
Given a data1.yaml file of:
```yaml
a: simple
b: [1, 2]
```
and data2.yaml file of:
```yaml
a: other
c:
test: 1
```
then
```bash
yq m data1.yaml data2.yaml
```
will output:
```yaml
a: simple
b: [1, 2]
c:
test: 1
```
### Updating files in-place
Given a data1.yaml file of:
```yaml
a: simple
b: [1, 2]
```
and data2.yaml file of:
```yaml
a: other
c:
test: 1
```
then
```bash
yq m -i data1.yaml data2.yaml
```
will update the data1.yaml file so that the value of 'c' is 'test: 1'.
### Overwrite values
Given a data1.yaml file of:
```yaml
a: simple
b: [1, 2]
```
and data2.yaml file of:
```yaml
a: other
c:
test: 1
```
then
```bash
yq m -x data1.yaml data2.yaml
```
will output:
```yaml
a: other
b: [1, 2]
c:
test: 1
```
### Overwrite values with arrays
Given a data1.yaml file of:
```yaml
a: simple
b: [1, 2]
```
and data3.yaml file of:
```yaml
b: [3, 4]
c:
test: 2
other: true
d: false
```
then
```bash
yq m -x data1.yaml data3.yaml
```
will output:
```yaml
a: simple
b: [3, 4]
c:
test: 2
other: true
d: false
```
Notice that 'b' does not result in the merging of the values within an array.
### Append values with arrays
Given a data1.yaml file of:
```yaml
a: simple
b: [1, 2]
d: hi
```
and data3.yaml file of:
```yaml
a: something
b: [3, 4]
c:
test: 2
other: true
```
then
```bash
yq m -a data1.yaml data3.yaml
```
will output:
```yaml
a: simple
b: [1, 2, 3, 4]
c:
test: 2
other: true
d: hi
```
Note that the 'b' array has concatenated the values from the second data file. Also note that other map keys are not overridden (field a).
Append cannot be used with overwrite, if both flags are given then append is ignored.
### Multiple Documents - merge into single document
Currently yq only has multi-document support for the _first_ document being merged into. The remaining yaml files will have their first document selected.
Given a data1.yaml file of:
```yaml
something: else
---
a: simple
b: cat
```
and data3.yaml file of:
```yaml
b: dog
```
then
```bash
yq m -x -d1 data1.yaml data3.yaml
```
will output:
```yaml
something: else
---
a: simple
b: dog
```
### Multiple Documents - merge into all documents
Currently yq only has multi-document support for the _first_ document being merged into. The remaining yaml files will have their first document selected.
Given a data1.yaml file of:
```yaml
something: else
---
a: simple
b: cat
```
and data3.yaml file of:
```yaml
b: dog
```
then
```bash
yq m -x -d'*' data1.yaml data3.yaml
```
will output:
```yaml
b: dog
something: else
---
a: simple
b: dog
```

96
mkdocs/prefix.md
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@ -1,96 +0,0 @@
Paths can be prefixed using the 'prefix' command.
The complete yaml content will be nested inside the new prefix path.
```
yq p <yaml_file> <path>
```
### To Stdout
Given a data1.yaml file of:
```yaml
a: simple
b: [1, 2]
```
then
```bash
yq p data1.yaml c
```
will output:
```yaml
c:
a: simple
b: [1, 2]
```
### Arbitrary depth
Given a data1.yaml file of:
```yaml
a:
b: [1, 2]
```
then
```bash
yq p data1.yaml c.d
```
will output:
```yaml
c:
d:
a:
b: [1, 2]
```
### Updating files in-place
Given a data1.yaml file of:
```yaml
a: simple
b: [1, 2]
```
then
```bash
yq p -i data1.yaml c
```
will update the data1.yaml file so that the path 'c' is prefixed to all other paths.
### Multiple Documents - prefix a single document
Given a data1.yaml file of:
```yaml
something: else
---
a: simple
b: cat
```
then
```bash
yq p -d1 data1.yaml c
```
will output:
```yaml
something: else
---
c:
a: simple
b: cat
```
### Multiple Documents - prefix all documents
Given a data1.yaml file of:
```yaml
something: else
---
a: simple
b: cat
```
then
```bash
yq p -d'*' data1.yaml c
```
will output:
```yaml
c:
something: else
---
c:
a: simple
b: cat
```

150
mkdocs/read.md
View File

@ -1,150 +0,0 @@
```
yq r <yaml_file|json_file> <path>
```
{!snippets/works_with_json.md!}
### Basic
Given a sample.yaml file of:
```yaml
b:
c: 2
```
then
```bash
yq r sample.yaml b.c
```
will output the value of '2'.
### From Stdin
Given a sample.yaml file of:
```bash
cat sample.yaml | yq r - b.c
```
will output the value of '2'.
### Splat
Given a sample.yaml file of:
```yaml
---
bob:
item1:
cats: bananas
item2:
cats: apples
thing:
cats: oranges
```
then
```bash
yq r sample.yaml bob.*.cats
```
will output
```yaml
- bananas
- apples
- oranges
```
### Prefix Splat
Given a sample.yaml file of:
```yaml
---
bob:
item1:
cats: bananas
item2:
cats: apples
thing:
cats: oranges
```
then
```bash
yq r sample.yaml bob.item*.cats
```
will output
```yaml
- bananas
- apples
```
### Multiple Documents - specify a single document
Given a sample.yaml file of:
```yaml
something: else
---
b:
c: 2
```
then
```bash
yq r -d1 sample.yaml b.c
```
will output the value of '2'.
### Multiple Documents - read all documents
Reading all documents will return the result as an array. This can be converted to json using the '-j' flag if desired.
Given a sample.yaml file of:
```yaml
name: Fred
age: 22
---
name: Stella
age: 23
---
name: Android
age: 232
```
then
```bash
yq r -d'*' sample.yaml name
```
will output:
```
- Fred
- Stella
- Android
```
### Arrays
You can give an index to access a specific element:
e.g.: given a sample file of
```yaml
b:
e:
- name: fred
value: 3
- name: sam
value: 4
```
then
```
yq r sample.yaml 'b.e[1].name'
```
will output 'sam'
Note that the path is in quotes to avoid the square brackets being interpreted by your shell.
### Array Splat
e.g.: given a sample file of
```yaml
b:
e:
- name: fred
value: 3
- name: sam
value: 4
```
then
```
yq r sample.yaml 'b.e[*].name'
```
will output:
```
- fred
- sam
```
Note that the path is in quotes to avoid the square brackets being interpreted by your shell.
{!snippets/niche.md!}

35
mkdocs/snippets/niche.md
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@ -1,35 +0,0 @@
### Keys with dots
When specifying a key that has a dot use key lookup indicator.
```yaml
b:
foo.bar: 7
```
```bash
yaml r sample.yaml 'b[foo.bar]'
```
```bash
yaml w sample.yaml 'b[foo.bar]' 9
```
Any valid yaml key can be specified as part of a key lookup.
Note that the path is in quotes to avoid the square brackets being interpreted by your shell.
### Keys (and values) with leading dashes
If a key or value has leading dashes, yq won't know that you are passing a value as opposed to a flag (and you will get a 'bad flag syntax' error).
To fix that, you will need to tell it to stop processing flags by adding '--' after the last flag like so:
```bash
yq n -t -- --key --value
```
Will result in
```
--key: --value
```

1
mkdocs/snippets/works_with_json.md
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@ -1 +0,0 @@
This command can take a json file as input too, and will output yaml unless specified to export as json (-j)

250
mkdocs/write.md
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@ -1,250 +0,0 @@
```
yq w <yaml_file> <path> <new value>
```
### To Stdout
Given a sample.yaml file of:
```yaml
b:
c: 2
```
then
```bash
yq w sample.yaml b.c cat
```
will output:
```yaml
b:
c: cat
```
### From STDIN
```bash
cat sample.yaml | yq w - b.c blah
```
### Adding new fields
Any missing fields in the path will be created on the fly.
Given a sample.yaml file of:
```yaml
b:
c: 2
```
then
```bash
yq w sample.yaml b.d[+] "new thing"
```
will output:
```yaml
b:
c: cat
d:
- new thing
```
### Splat
Given a sample.yaml file of:
```yaml
---
bob:
item1:
cats: bananas
item2:
cats: apples
thing:
cats: oranges
```
then
```bash
yq w sample.yaml bob.*.cats meow
```
will output:
```yaml
---
bob:
item1:
cats: meow
item2:
cats: meow
thing:
cats: meow
```
### Prefix Splat
Given a sample.yaml file of:
```yaml
---
bob:
item1:
cats: bananas
item2:
cats: apples
thing:
cats: oranges
```
then
```bash
yq w sample.yaml bob.item*.cats meow
```
will output:
```yaml
---
bob:
item1:
cats: meow
item2:
cats: meow
thing:
cats: oranges
```
### Array Splat
Given a sample.yaml file of:
```yaml
---
bob:
- cats: bananas
- cats: apples
- cats: oranges
```
then
```bash
yq w sample.yaml bob[*].cats meow
```
will output:
```yaml
---
bob:
- cats: meow
- cats: meow
- cats: meow
```
### Appending value to an array field
Given a sample.yaml file of:
```yaml
b:
c: 2
d:
- new thing
- foo thing
```
then
```bash
yq w sample.yaml "b.d[+]" "bar thing"
```
will output:
```yaml
b:
c: cat
d:
- new thing
- foo thing
- bar thing
```
Note that the path is in quotes to avoid the square brackets being interpreted by your shell.
### Multiple Documents - update a single document
Given a sample.yaml file of:
```yaml
something: else
---
b:
c: 2
```
then
```bash
yq w -d1 sample.yaml b.c 5
```
will output:
```yaml
something: else
---
b:
c: 5
```
### Multiple Documents - update all documents
Given a sample.yaml file of:
```yaml
something: else
---
b:
c: 2
```
then
```bash
yq w -d'*' sample.yaml b.c 5
```
will output:
```yaml
something: else
b:
c: 5
---
b:
c: 5
```
Note that '*' is in quotes to avoid being interpreted by your shell.
### Updating files in-place
Given a sample.yaml file of:
```yaml
b:
c: 2
```
then
```bash
yq w -i sample.yaml b.c cat
```
will update the sample.yaml file so that the value of 'c' is cat.
### Updating multiple values with a script
Given a sample.yaml file of:
```yaml
b:
c: 2
e:
- name: Billy Bob
```
and a script update_instructions.yaml of:
```yaml
b.c: 3
b.e[+].name: Howdy Partner
```
then
```bash
yq w -s update_instructions.yaml sample.yaml
```
will output:
```yaml
b:
c: 3
e:
- name: Howdy Partner
```
And, of course, you can pipe the instructions in using '-':
```bash
cat update_instructions.yaml | yq w -s - sample.yaml
```
### Values starting with a hyphen (or dash)
The flag terminator needs to be used to stop the app from attempting to parse the subsequent arguments as flags:
```
yq w -- my.path -3
```
will output
```yaml
my:
path: -3
```
{!snippets/niche.md!}

54
pkg/marshal/json_converter.go
View File

@ -1,54 +0,0 @@
package marshal
import (
"encoding/json"
"fmt"
"strconv"
yaml "github.com/mikefarah/yaml/v2"
)
type JsonConverter interface {
JsonToString(context interface{}) (string, error)
}
type jsonConverter struct{}
func NewJsonConverter() JsonConverter {
return &jsonConverter{}
}
func (j *jsonConverter) JsonToString(context interface{}) (string, error) {
out, err := json.Marshal(j.toJSON(context))
if err != nil {
return "", fmt.Errorf("error printing yaml as json: %v", err)
}
return string(out), nil
}
func (j *jsonConverter) toJSON(context interface{}) interface{} {
switch context := context.(type) {
case []interface{}:
oldArray := context
newArray := make([]interface{}, len(oldArray))
for index, value := range oldArray {
newArray[index] = j.toJSON(value)
}
return newArray
case yaml.MapSlice:
oldMap := context
newMap := make(map[string]interface{})
for _, entry := range oldMap {
if str, ok := entry.Key.(string); ok {
newMap[str] = j.toJSON(entry.Value)
} else if i, ok := entry.Key.(int); ok {
newMap[strconv.Itoa(i)] = j.toJSON(entry.Value)
} else if b, ok := entry.Key.(bool); ok {
newMap[strconv.FormatBool(b)] = j.toJSON(entry.Value)
}
}
return newMap
default:
return context
}
}

48
pkg/marshal/json_converter_test.go
View File

@ -1,48 +0,0 @@
package marshal
import (
"testing"
"github.com/mikefarah/yq/v2/test"
)
func TestJsonToString(t *testing.T) {
var data = test.ParseData(`
---
b:
c: 2
`)
got, _ := NewJsonConverter().JsonToString(data)
test.AssertResult(t, "{\"b\":{\"c\":2}}", got)
}
func TestJsonToString_withIntKey(t *testing.T) {
var data = test.ParseData(`
---
b:
2: c
`)
got, _ := NewJsonConverter().JsonToString(data)
test.AssertResult(t, `{"b":{"2":"c"}}`, got)
}
func TestJsonToString_withBoolKey(t *testing.T) {
var data = test.ParseData(`
---
b:
false: c
`)
got, _ := NewJsonConverter().JsonToString(data)
test.AssertResult(t, `{"b":{"false":"c"}}`, got)
}
func TestJsonToString_withArray(t *testing.T) {
var data = test.ParseData(`
---
b:
- item: one
- item: two
`)
got, _ := NewJsonConverter().JsonToString(data)
test.AssertResult(t, "{\"b\":[{\"item\":\"one\"},{\"item\":\"two\"}]}", got)
}

43
pkg/marshal/yaml_converter.go
View File

@ -1,43 +0,0 @@
package marshal
import (
"strings"
yaml "github.com/mikefarah/yaml/v2"
errors "github.com/pkg/errors"
)
type YamlConverter interface {
YamlToString(context interface{}, trimOutput bool) (string, error)
}
type yamlConverter struct{}
func NewYamlConverter() YamlConverter {
return &yamlConverter{}
}
func (y *yamlConverter) YamlToString(context interface{}, trimOutput bool) (string, error) {
switch context := context.(type) {
case string:
return context, nil
default:
return y.marshalContext(context, trimOutput)
}
}
func (y *yamlConverter) marshalContext(context interface{}, trimOutput bool) (string, error) {
out, err := yaml.Marshal(context)
if err != nil {
return "", errors.Wrap(err, "error printing yaml")
}
outStr := string(out)
// trim the trailing new line as it's easier for a script to add
// it in if required than to remove it
if trimOutput {
return strings.Trim(outStr, "\n "), nil
}
return outStr, nil
}

52
pkg/marshal/yaml_converter_test.go
View File

@ -1,52 +0,0 @@
package marshal
import (
"testing"
"github.com/mikefarah/yq/v2/test"
)
func TestYamlToString(t *testing.T) {
var raw = `b:
c: 2
`
var data = test.ParseData(raw)
got, _ := NewYamlConverter().YamlToString(data, false)
test.AssertResult(t, raw, got)
}
func TestYamlToString_withTrim(t *testing.T) {
var raw = `b:
c: 2`
var data = test.ParseData(raw)
got, _ := NewYamlConverter().YamlToString(data, true)
test.AssertResult(t, raw, got)
}
func TestYamlToString_withIntKey(t *testing.T) {
var raw = `b:
2: c
`
var data = test.ParseData(raw)
got, _ := NewYamlConverter().YamlToString(data, false)
test.AssertResult(t, raw, got)
}
func TestYamlToString_withBoolKey(t *testing.T) {
var raw = `b:
false: c
`
var data = test.ParseData(raw)
got, _ := NewYamlConverter().YamlToString(data, false)
test.AssertResult(t, raw, got)
}
func TestYamlToString_withArray(t *testing.T) {
var raw = `b:
- item: one
- item: two
`
var data = test.ParseData(raw)
got, _ := NewYamlConverter().YamlToString(data, false)
test.AssertResult(t, raw, got)
}

531
pkg/yqlib/data_navigator.go
View File

@ -1,376 +1,249 @@
package yqlib
import (
"fmt"
"reflect"
"strconv"
"strings"
yaml "github.com/mikefarah/yaml/v2"
logging "gopkg.in/op/go-logging.v1"
errors "github.com/pkg/errors"
yaml "gopkg.in/yaml.v3"
)
type DataNavigator interface {
ReadChildValue(child interface{}, remainingPaths []string) (interface{}, error)
UpdatedChildValue(child interface{}, remainingPaths []string, value interface{}) interface{}
DeleteChildValue(child interface{}, remainingPaths []string) (interface{}, error)
Traverse(value *yaml.Node, path []string) error
}
type navigator struct {
log *logging.Logger
navigationStrategy NavigationStrategy
}
func NewDataNavigator(l *logging.Logger) DataNavigator {
func NewDataNavigator(NavigationStrategy NavigationStrategy) DataNavigator {
return &navigator{
log: l,
navigationStrategy: NavigationStrategy,
}
}
func (n *navigator) ReadChildValue(child interface{}, remainingPaths []string) (interface{}, error) {
if len(remainingPaths) == 0 {
return child, nil
func (n *navigator) Traverse(value *yaml.Node, path []string) error {
realValue := value
emptyArray := make([]interface{}, 0)
if realValue.Kind == yaml.DocumentNode {
log.Debugf("its a document! returning the first child")
return n.doTraverse(value.Content[0], "", path, emptyArray)
}
return n.recurse(child, remainingPaths[0], remainingPaths[1:])
return n.doTraverse(value, "", path, emptyArray)
}
func (n *navigator) UpdatedChildValue(child interface{}, remainingPaths []string, value interface{}) interface{} {
if len(remainingPaths) == 0 {
return value
}
n.log.Debugf("UpdatedChildValue for child %v with path %v to set value %v", child, remainingPaths, value)
n.log.Debugf("type of child is %v", reflect.TypeOf(child))
switch child := child.(type) {
case nil:
if remainingPaths[0] == "+" || remainingPaths[0] == "*" {
return n.writeArray(child, remainingPaths, value)
}
case []interface{}:
_, nextIndexErr := strconv.ParseInt(remainingPaths[0], 10, 64)
arrayCommand := nextIndexErr == nil || remainingPaths[0] == "+" || remainingPaths[0] == "*"
if arrayCommand {
return n.writeArray(child, remainingPaths, value)
}
}
return n.writeMap(child, remainingPaths, value)
}
func (n *navigator) DeleteChildValue(child interface{}, remainingPaths []string) (interface{}, error) {
n.log.Debugf("DeleteChildValue for %v for %v\n", remainingPaths, child)
if len(remainingPaths) == 0 {
return child, nil
}
var head = remainingPaths[0]
var tail = remainingPaths[1:]
switch child := child.(type) {
case yaml.MapSlice:
return n.deleteMap(child, remainingPaths)
case []interface{}:
if head == "*" {
return n.deleteArraySplat(child, tail)
}
index, err := strconv.ParseInt(head, 10, 64)
if err != nil {
return nil, fmt.Errorf("error accessing array: %v", err)
}
return n.deleteArray(child, remainingPaths, index)
}
return child, nil
}
func (n *navigator) recurse(value interface{}, head string, tail []string) (interface{}, error) {
switch value := value.(type) {
case []interface{}:
if head == "*" {
return n.readArraySplat(value, tail)
}
index, err := strconv.ParseInt(head, 10, 64)
if err != nil {
return nil, fmt.Errorf("error accessing array: %v", err)
}
return n.readArray(value, index, tail)
case yaml.MapSlice:
return n.readMap(value, head, tail)
default:
return nil, nil
}
}
func (n *navigator) matchesKey(key string, actual interface{}) bool {
var actualString = fmt.Sprintf("%v", actual)
var prefixMatch = strings.TrimSuffix(key, "*")
if prefixMatch != key {
return strings.HasPrefix(actualString, prefixMatch)
}
return actualString == key
}
func (n *navigator) entriesInSlice(context yaml.MapSlice, key string) []*yaml.MapItem {
var matches = make([]*yaml.MapItem, 0)
for idx := range context {
var entry = &context[idx]
if n.matchesKey(key, entry.Key) {
matches = append(matches, entry)
}
}
return matches
}
func (n *navigator) getMapSlice(context interface{}) yaml.MapSlice {
var mapSlice yaml.MapSlice
switch context := context.(type) {
case yaml.MapSlice:
mapSlice = context
default:
mapSlice = make(yaml.MapSlice, 0)
}
return mapSlice
}
func (n *navigator) getArray(context interface{}) (array []interface{}, ok bool) {
switch context := context.(type) {
case []interface{}:
array = context
ok = true
default:
array = make([]interface{}, 0)
ok = false
}
return
}
func (n *navigator) writeMap(context interface{}, paths []string, value interface{}) interface{} {
n.log.Debugf("writeMap with path %v for %v to set value %v\n", paths, context, value)
mapSlice := n.getMapSlice(context)
if len(paths) == 0 {
return context
}
children := n.entriesInSlice(mapSlice, paths[0])
if len(children) == 0 && paths[0] == "*" {
n.log.Debugf("\tNo matches, return map as is")
return context
}
if len(children) == 0 {
newChild := yaml.MapItem{Key: paths[0]}
mapSlice = append(mapSlice, newChild)
children = n.entriesInSlice(mapSlice, paths[0])
n.log.Debugf("\tAppended child at %v for mapSlice %v\n", paths[0], mapSlice)
}
remainingPaths := paths[1:]
for _, child := range children {
child.Value = n.UpdatedChildValue(child.Value, remainingPaths, value)
}
n.log.Debugf("\tReturning mapSlice %v\n", mapSlice)
return mapSlice
}
func (n *navigator) writeArray(context interface{}, paths []string, value interface{}) []interface{} {
n.log.Debugf("writeArray with path %v for %v to set value %v\n", paths, context, value)
array, _ := n.getArray(context)
if len(paths) == 0 {
return array
}
n.log.Debugf("\tarray %v\n", array)
rawIndex := paths[0]
remainingPaths := paths[1:]
var index int64
// the append array indicator
if rawIndex == "+" {
index = int64(len(array))
} else if rawIndex == "*" {
for index, oldChild := range array {
array[index] = n.UpdatedChildValue(oldChild, remainingPaths, value)
}
return array
} else {
index, _ = strconv.ParseInt(rawIndex, 10, 64) // nolint
// writeArray is only called by UpdatedChildValue which handles parsing the
// index, as such this renders this dead code.
}
for index >= int64(len(array)) {
array = append(array, nil)
}
currentChild := array[index]
n.log.Debugf("\tcurrentChild %v\n", currentChild)
array[index] = n.UpdatedChildValue(currentChild, remainingPaths, value)
n.log.Debugf("\tReturning array %v\n", array)
return array
}
func (n *navigator) readMap(context yaml.MapSlice, head string, tail []string) (interface{}, error) {
n.log.Debugf("readingMap %v with key %v\n", context, head)
if head == "*" {
return n.readMapSplat(context, tail)
}
entries := n.entriesInSlice(context, head)
if len(entries) == 1 {
return n.calculateValue(entries[0].Value, tail)
} else if len(entries) == 0 {
return nil, nil
}
var errInIdx error
values := make([]interface{}, len(entries))
for idx, entry := range entries {
values[idx], errInIdx = n.calculateValue(entry.Value, tail)
if errInIdx != nil {
n.log.Errorf("Error updating index %v in %v", idx, context)
return nil, errInIdx
}
}
return values, nil
}
func (n *navigator) readMapSplat(context yaml.MapSlice, tail []string) (interface{}, error) {
var newArray = make([]interface{}, len(context))
var i = 0
for _, entry := range context {
func (n *navigator) doTraverse(value *yaml.Node, head string, tail []string, pathStack []interface{}) error {
log.Debug("head %v", head)
DebugNode(value)
var errorDeepSplatting error
if head == "**" && value.Kind != yaml.ScalarNode {
errorDeepSplatting = n.recurse(value, head, tail, pathStack)
// ignore errors here, we are deep splatting so we may accidently give a string key
// to an array sequence
if len(tail) > 0 {
val, err := n.recurse(entry.Value, tail[0], tail[1:])
if err != nil {
return nil, err
}
newArray[i] = val
} else {
newArray[i] = entry.Value
_ = n.recurse(value, tail[0], tail[1:], pathStack)
}
i++
}
return newArray, nil
}
func (n *navigator) readArray(array []interface{}, head int64, tail []string) (interface{}, error) {
if head >= int64(len(array)) {
return nil, nil
return errorDeepSplatting
}
value := array[head]
return n.calculateValue(value, tail)
}
func (n *navigator) readArraySplat(array []interface{}, tail []string) (interface{}, error) {
var newArray = make([]interface{}, len(array))
for index, value := range array {
val, err := n.calculateValue(value, tail)
if err != nil {
return nil, err
}
newArray[index] = val
}
return newArray, nil
}
func (n *navigator) calculateValue(value interface{}, tail []string) (interface{}, error) {
if len(tail) > 0 {
return n.recurse(value, tail[0], tail[1:])
log.Debugf("diving into %v", tail[0])
DebugNode(value)
return n.recurse(value, tail[0], tail[1:], pathStack)
}
return value, nil
return n.navigationStrategy.Visit(NewNodeContext(value, head, tail, pathStack))
}
func (n *navigator) deleteMap(context interface{}, paths []string) (yaml.MapSlice, error) {
n.log.Debugf("deleteMap for %v for %v\n", paths, context)
func (n *navigator) getOrReplace(original *yaml.Node, expectedKind yaml.Kind) *yaml.Node {
if original.Kind != expectedKind {
log.Debug("wanted %v but it was %v, overriding", expectedKind, original.Kind)
return &yaml.Node{Kind: expectedKind}
}
return original
}
mapSlice := n.getMapSlice(context)
func (n *navigator) recurse(value *yaml.Node, head string, tail []string, pathStack []interface{}) error {
log.Debug("recursing, processing %v", head)
switch value.Kind {
case yaml.MappingNode:
log.Debug("its a map with %v entries", len(value.Content)/2)
return n.recurseMap(value, head, tail, pathStack)
case yaml.SequenceNode:
log.Debug("its a sequence of %v things!", len(value.Content))
if n.navigationStrategy.GetPathParser().IsPathExpression(head) {
return n.splatArray(value, head, tail, pathStack)
} else if head == "+" {
return n.appendArray(value, head, tail, pathStack)
}
return n.recurseArray(value, head, tail, pathStack)
case yaml.AliasNode:
log.Debug("its an alias!")
DebugNode(value.Alias)
if n.navigationStrategy.FollowAlias(NewNodeContext(value, head, tail, pathStack)) {
log.Debug("following the alias")
return n.recurse(value.Alias, head, tail, pathStack)
}
return nil
default:
return nil
}
}
if len(paths) == 0 {
return mapSlice, nil
func (n *navigator) recurseMap(value *yaml.Node, head string, tail []string, pathStack []interface{}) error {
traversedEntry := false
errorVisiting := n.visitMatchingEntries(value, head, tail, pathStack, func(contents []*yaml.Node, indexInMap int) error {
log.Debug("recurseMap: visitMatchingEntries")
n.navigationStrategy.DebugVisitedNodes()
newPathStack := append(pathStack, contents[indexInMap].Value)
log.Debug("appended %v", contents[indexInMap].Value)
n.navigationStrategy.DebugVisitedNodes()
log.Debug("should I traverse? head: %v, path: %v", head, pathStackToString(newPathStack))
DebugNode(value)
if n.navigationStrategy.ShouldTraverse(NewNodeContext(contents[indexInMap+1], head, tail, newPathStack), contents[indexInMap].Value) {
log.Debug("recurseMap: Going to traverse")
traversedEntry = true
// contents[indexInMap+1] = n.getOrReplace(contents[indexInMap+1], guessKind(head, tail, contents[indexInMap+1].Kind))
errorTraversing := n.doTraverse(contents[indexInMap+1], head, tail, newPathStack)
log.Debug("recurseMap: Finished traversing")
n.navigationStrategy.DebugVisitedNodes()
return errorTraversing
} else {
log.Debug("nope not traversing")
}
return nil
})
if errorVisiting != nil {
return errorVisiting
}
var index int
var child yaml.MapItem
for index, child = range mapSlice {
if n.matchesKey(paths[0], child.Key) {
n.log.Debugf("\tMatched [%v] with [%v] at index %v", paths[0], child.Key, index)
var badDelete error
mapSlice, badDelete = n.deleteEntryInMap(mapSlice, child, index, paths)
if badDelete != nil {
return nil, badDelete
if traversedEntry || n.navigationStrategy.GetPathParser().IsPathExpression(head) || !n.navigationStrategy.AutoCreateMap(NewNodeContext(value, head, tail, pathStack)) {
return nil
}
mapEntryKey := yaml.Node{Value: head, Kind: yaml.ScalarNode}
value.Content = append(value.Content, &mapEntryKey)
mapEntryValue := yaml.Node{Kind: guessKind(head, tail, 0)}
value.Content = append(value.Content, &mapEntryValue)
log.Debug("adding new node %v", head)
return n.doTraverse(&mapEntryValue, head, tail, append(pathStack, head))
}
// need to pass the node in, as it may be aliased
type mapVisitorFn func(contents []*yaml.Node, index int) error
func (n *navigator) visitDirectMatchingEntries(node *yaml.Node, head string, tail []string, pathStack []interface{}, visit mapVisitorFn) error {
var contents = node.Content
for index := 0; index < len(contents); index = index + 2 {
content := contents[index]
log.Debug("index %v, checking %v, %v", index, content.Value, content.Tag)
n.navigationStrategy.DebugVisitedNodes()
errorVisiting := visit(contents, index)
if errorVisiting != nil {
return errorVisiting
}
}
return nil
}
func (n *navigator) visitMatchingEntries(node *yaml.Node, head string, tail []string, pathStack []interface{}, visit mapVisitorFn) error {
var contents = node.Content
log.Debug("visitMatchingEntries %v", head)
DebugNode(node)
// value.Content is a concatenated array of key, value,
// so keys are in the even indexes, values in odd.
// merge aliases are defined first, but we only want to traverse them
// if we don't find a match directly on this node first.
errorVisitedDirectEntries := n.visitDirectMatchingEntries(node, head, tail, pathStack, visit)
if errorVisitedDirectEntries != nil || !n.navigationStrategy.FollowAlias(NewNodeContext(node, head, tail, pathStack)) {
return errorVisitedDirectEntries
}
return n.visitAliases(contents, head, tail, pathStack, visit)
}
func (n *navigator) visitAliases(contents []*yaml.Node, head string, tail []string, pathStack []interface{}, visit mapVisitorFn) error {
// merge aliases are defined first, but we only want to traverse them
// if we don't find a match on this node first.
// traverse them backwards so that the last alias overrides the preceding.
// a node can either be
// an alias to one other node (e.g. <<: *blah)
// or a sequence of aliases (e.g. <<: [*blah, *foo])
log.Debug("checking for aliases")
for index := len(contents) - 2; index >= 0; index = index - 2 {
if contents[index+1].Kind == yaml.AliasNode {
valueNode := contents[index+1]
log.Debug("found an alias")
DebugNode(contents[index])
DebugNode(valueNode)
errorInAlias := n.visitMatchingEntries(valueNode.Alias, head, tail, pathStack, visit)
if errorInAlias != nil {
return errorInAlias
}
} else if contents[index+1].Kind == yaml.SequenceNode {
// could be an array of aliases...
errorVisitingAliasSeq := n.visitAliasSequence(contents[index+1].Content, head, tail, pathStack, visit)
if errorVisitingAliasSeq != nil {
return errorVisitingAliasSeq
}
}
}
return mapSlice, nil
return nil
}
func (n *navigator) deleteEntryInMap(original yaml.MapSlice, child yaml.MapItem, index int, paths []string) (yaml.MapSlice, error) {
remainingPaths := paths[1:]
var newSlice yaml.MapSlice
if len(remainingPaths) > 0 {
newChild := yaml.MapItem{Key: child.Key}
var errorDeleting error
newChild.Value, errorDeleting = n.DeleteChildValue(child.Value, remainingPaths)
if errorDeleting != nil {
return nil, errorDeleting
}
newSlice = make(yaml.MapSlice, len(original))
for i := range original {
item := original[i]
if i == index {
item = newChild
func (n *navigator) visitAliasSequence(possibleAliasArray []*yaml.Node, head string, tail []string, pathStack []interface{}, visit mapVisitorFn) error {
// need to search this backwards too, so that aliases defined last override the preceding.
for aliasIndex := len(possibleAliasArray) - 1; aliasIndex >= 0; aliasIndex = aliasIndex - 1 {
child := possibleAliasArray[aliasIndex]
if child.Kind == yaml.AliasNode {
log.Debug("found an alias")
DebugNode(child)
errorInAlias := n.visitMatchingEntries(child.Alias, head, tail, pathStack, visit)
if errorInAlias != nil {
return errorInAlias
}
newSlice[i] = item
}
} else {
// Delete item from slice at index
newSlice = append(original[:index], original[index+1:]...)
n.log.Debugf("\tDeleted item index %d from original", index)
}
n.log.Debugf("\tReturning original %v\n", original)
return newSlice, nil
return nil
}
func (n *navigator) deleteArraySplat(array []interface{}, tail []string) (interface{}, error) {
n.log.Debugf("deleteArraySplat for %v for %v\n", tail, array)
var newArray = make([]interface{}, len(array))
for index, value := range array {
val, err := n.DeleteChildValue(value, tail)
if err != nil {
return nil, err
func (n *navigator) splatArray(value *yaml.Node, head string, tail []string, pathStack []interface{}) error {
for index, childValue := range value.Content {
log.Debug("processing")
DebugNode(childValue)
childValue = n.getOrReplace(childValue, guessKind(head, tail, childValue.Kind))
newPathStack := append(pathStack, index)
if n.navigationStrategy.ShouldTraverse(NewNodeContext(childValue, head, tail, newPathStack), childValue.Value) {
var err = n.doTraverse(childValue, head, tail, newPathStack)
if err != nil {
return err
}
}
newArray[index] = val
}
return newArray, nil
return nil
}
func (n *navigator) deleteArray(array []interface{}, paths []string, index int64) (interface{}, error) {
n.log.Debugf("deleteArray for %v for %v\n", paths, array)
if index >= int64(len(array)) {
return array, nil
}
remainingPaths := paths[1:]
if len(remainingPaths) > 0 {
// recurse into the array element at index
var errorDeleting error
array[index], errorDeleting = n.deleteMap(array[index], remainingPaths)
if errorDeleting != nil {
return nil, errorDeleting
}
} else {
// Delete the array element at index
array = append(array[:index], array[index+1:]...)
n.log.Debugf("\tDeleted item index %d from array, leaving %v", index, array)
}
n.log.Debugf("\tReturning array: %v\n", array)
return array, nil
func (n *navigator) appendArray(value *yaml.Node, head string, tail []string, pathStack []interface{}) error {
var newNode = yaml.Node{Kind: guessKind(head, tail, 0)}
value.Content = append(value.Content, &newNode)
log.Debug("appending a new node, %v", value.Content)
return n.doTraverse(&newNode, head, tail, append(pathStack, len(value.Content)-1))
}
func (n *navigator) recurseArray(value *yaml.Node, head string, tail []string, pathStack []interface{}) error {
var index, err = strconv.ParseInt(head, 10, 64) // nolint
if err != nil {
return errors.Wrapf(err, "Error parsing array index '%v' for '%v'", head, pathStackToString(pathStack))
}
for int64(len(value.Content)) <= index {
value.Content = append(value.Content, &yaml.Node{Kind: guessKind(head, tail, 0)})
}
value.Content[index] = n.getOrReplace(value.Content[index], guessKind(head, tail, value.Content[index].Kind))
return n.doTraverse(value.Content[index], head, tail, append(pathStack, index))
}

396
pkg/yqlib/data_navigator_test.go
View File

@ -1,397 +1 @@
package yqlib
import (
"fmt"
"sort"
"testing"
"github.com/mikefarah/yq/v2/test"
logging "gopkg.in/op/go-logging.v1"
)
func TestDataNavigator(t *testing.T) {
var log = logging.MustGetLogger("yq")
subject := NewDataNavigator(log)
t.Run("TestReadMap_simple", func(t *testing.T) {
var data = test.ParseData(`
---
b:
c: 2
`)
got, _ := subject.ReadChildValue(data, []string{"b", "c"})
test.AssertResult(t, 2, got)
})
t.Run("TestReadMap_numberKey", func(t *testing.T) {
var data = test.ParseData(`
---
200: things
`)
got, _ := subject.ReadChildValue(data, []string{"200"})
test.AssertResult(t, "things", got)
})
t.Run("TestReadMap_splat", func(t *testing.T) {
var data = test.ParseData(`
---
mapSplat:
item1: things
item2: whatever
otherThing: cat
`)
res, _ := subject.ReadChildValue(data, []string{"mapSplat", "*"})
test.AssertResult(t, "[things whatever cat]", fmt.Sprintf("%v", res))
})
t.Run("TestReadMap_prefixSplat", func(t *testing.T) {
var data = test.ParseData(`
---
mapSplat:
item1: things
item2: whatever
otherThing: cat
`)
res, _ := subject.ReadChildValue(data, []string{"mapSplat", "item*"})
test.AssertResult(t, "[things whatever]", fmt.Sprintf("%v", res))
})
t.Run("TestReadMap_deep_splat", func(t *testing.T) {
var data = test.ParseData(`
---
mapSplatDeep:
item1:
cats: bananas
item2:
cats: apples
`)
res, _ := subject.ReadChildValue(data, []string{"mapSplatDeep", "*", "cats"})
result := res.([]interface{})
var actual = []string{result[0].(string), result[1].(string)}
sort.Strings(actual)
test.AssertResult(t, "[apples bananas]", fmt.Sprintf("%v", actual))
})
t.Run("TestReadMap_key_doesnt_exist", func(t *testing.T) {
var data = test.ParseData(`
---
b:
c: 2
`)
got, _ := subject.ReadChildValue(data, []string{"b", "x", "f", "c"})
test.AssertResult(t, nil, got)
})
t.Run("TestReadMap_recurse_against_string", func(t *testing.T) {
var data = test.ParseData(`
---
a: cat
`)
got, _ := subject.ReadChildValue(data, []string{"a", "b"})
test.AssertResult(t, nil, got)
})
t.Run("TestReadMap_with_array", func(t *testing.T) {
var data = test.ParseData(`
---
b:
d:
- 3
- 4
`)
got, _ := subject.ReadChildValue(data, []string{"b", "d", "1"})
test.AssertResult(t, 4, got)
})
t.Run("TestReadMap_with_array_and_bad_index", func(t *testing.T) {
var data = test.ParseData(`
---
b:
d:
- 3
- 4
`)
_, err := subject.ReadChildValue(data, []string{"b", "d", "x"})
if err == nil {
t.Fatal("Expected error due to invalid path")
}
expectedOutput := `error accessing array: strconv.ParseInt: parsing "x": invalid syntax`
test.AssertResult(t, expectedOutput, err.Error())
})
t.Run("TestReadMap_with_mapsplat_array_and_bad_index", func(t *testing.T) {
var data = test.ParseData(`
---
b:
d:
e:
- 3
- 4
f:
- 1
- 2
`)
_, err := subject.ReadChildValue(data, []string{"b", "d", "*", "x"})
if err == nil {
t.Fatal("Expected error due to invalid path")
}
expectedOutput := `error accessing array: strconv.ParseInt: parsing "x": invalid syntax`
test.AssertResult(t, expectedOutput, err.Error())
})
t.Run("TestReadMap_with_arraysplat_map_array_and_bad_index", func(t *testing.T) {
var data = test.ParseData(`
---
b:
d:
- names:
- fred
- smith
- names:
- sam
- bo
`)
_, err := subject.ReadChildValue(data, []string{"b", "d", "*", "names", "x"})
if err == nil {
t.Fatal("Expected error due to invalid path")
}
expectedOutput := `error accessing array: strconv.ParseInt: parsing "x": invalid syntax`
test.AssertResult(t, expectedOutput, err.Error())
})
t.Run("TestReadMap_with_array_out_of_bounds", func(t *testing.T) {
var data = test.ParseData(`
---
b:
d:
- 3
- 4
`)
got, _ := subject.ReadChildValue(data, []string{"b", "d", "3"})
test.AssertResult(t, nil, got)
})
t.Run("TestReadMap_with_array_out_of_bounds_by_1", func(t *testing.T) {
var data = test.ParseData(`
---
b:
d:
- 3
- 4
`)
got, _ := subject.ReadChildValue(data, []string{"b", "d", "2"})
test.AssertResult(t, nil, got)
})
t.Run("TestReadMap_with_array_splat", func(t *testing.T) {
var data = test.ParseData(`
e:
-
name: Fred
thing: cat
-
name: Sam
thing: dog
`)
got, _ := subject.ReadChildValue(data, []string{"e", "*", "name"})
test.AssertResult(t, "[Fred Sam]", fmt.Sprintf("%v", got))
})
t.Run("TestWrite_really_simple", func(t *testing.T) {
var data = test.ParseData(`
b: 2
`)
updated := subject.UpdatedChildValue(data, []string{"b"}, "4")
test.AssertResult(t, "[{b 4}]", fmt.Sprintf("%v", updated))
})
t.Run("TestWrite_simple", func(t *testing.T) {
var data = test.ParseData(`
b:
c: 2
`)
updated := subject.UpdatedChildValue(data, []string{"b", "c"}, "4")
test.AssertResult(t, "[{b [{c 4}]}]", fmt.Sprintf("%v", updated))
})
t.Run("TestWrite_new", func(t *testing.T) {
var data = test.ParseData(`
b:
c: 2
`)
updated := subject.UpdatedChildValue(data, []string{"b", "d"}, "4")
test.AssertResult(t, "[{b [{c 2} {d 4}]}]", fmt.Sprintf("%v", updated))
})
t.Run("TestWrite_new_deep", func(t *testing.T) {
var data = test.ParseData(`
b:
c: 2
`)
updated := subject.UpdatedChildValue(data, []string{"b", "d", "f"}, "4")
test.AssertResult(t, "[{b [{c 2} {d [{f 4}]}]}]", fmt.Sprintf("%v", updated))
})
t.Run("TestWrite_array", func(t *testing.T) {
var data = test.ParseData(`
b:
- aa
`)
updated := subject.UpdatedChildValue(data, []string{"b", "0"}, "bb")
test.AssertResult(t, "[{b [bb]}]", fmt.Sprintf("%v", updated))
})
t.Run("TestWrite_new_array", func(t *testing.T) {
var data = test.ParseData(`
b:
c: 2
`)
updated := subject.UpdatedChildValue(data, []string{"b", "0"}, "4")
test.AssertResult(t, "[{b [{c 2} {0 4}]}]", fmt.Sprintf("%v", updated))
})
t.Run("TestWrite_new_array_deep", func(t *testing.T) {
var data = test.ParseData(`
a: apple
`)
updated := subject.UpdatedChildValue(data, []string{"b", "+", "c"}, "4")
test.AssertResult(t, "[{a apple} {b [[{c 4}]]}]", fmt.Sprintf("%v", updated))
})
t.Run("TestWrite_new_map_array_deep", func(t *testing.T) {
var data = test.ParseData(`
b:
c: 2
`)
updated := subject.UpdatedChildValue(data, []string{"b", "d", "+"}, "4")
test.AssertResult(t, "[{b [{c 2} {d [4]}]}]", fmt.Sprintf("%v", updated))
})
t.Run("TestWrite_add_to_array", func(t *testing.T) {
var data = test.ParseData(`
b:
- aa
`)
updated := subject.UpdatedChildValue(data, []string{"b", "1"}, "bb")
test.AssertResult(t, "[{b [aa bb]}]", fmt.Sprintf("%v", updated))
})
t.Run("TestWrite_with_no_tail", func(t *testing.T) {
var data = test.ParseData(`
b:
c: 2
`)
updated := subject.UpdatedChildValue(data, []string{"b"}, "4")
test.AssertResult(t, "[{b 4}]", fmt.Sprintf("%v", updated))
})
t.Run("TestWriteMap_no_paths", func(t *testing.T) {
var data = test.ParseData(`
b: 5
`)
var new = test.ParseData(`
c: 4
`)
result := subject.UpdatedChildValue(data, []string{}, new)
test.AssertResult(t, fmt.Sprintf("%v", new), fmt.Sprintf("%v", result))
})
t.Run("TestWriteArray_no_paths", func(t *testing.T) {
var data = make([]interface{}, 1)
data[0] = "mike"
var new = test.ParseData(`
c: 4
`)
result := subject.UpdatedChildValue(data, []string{}, new)
test.AssertResult(t, fmt.Sprintf("%v", new), fmt.Sprintf("%v", result))
})
t.Run("TestDelete_MapItem", func(t *testing.T) {
var data = test.ParseData(`
a: 123
b: 456
`)
var expected = test.ParseData(`
b: 456
`)
result, _ := subject.DeleteChildValue(data, []string{"a"})
test.AssertResult(t, fmt.Sprintf("%v", expected), fmt.Sprintf("%v", result))
})
// Ensure deleting an index into a string does nothing
t.Run("TestDelete_index_to_string", func(t *testing.T) {
var data = test.ParseData(`
a: mystring
`)
result, _ := subject.DeleteChildValue(data, []string{"a", "0"})
test.AssertResult(t, fmt.Sprintf("%v", data), fmt.Sprintf("%v", result))
})
t.Run("TestDelete_list_index", func(t *testing.T) {
var data = test.ParseData(`
a: [3, 4]
`)
var expected = test.ParseData(`
a: [3]
`)
result, _ := subject.DeleteChildValue(data, []string{"a", "1"})
test.AssertResult(t, fmt.Sprintf("%v", expected), fmt.Sprintf("%v", result))
})
t.Run("TestDelete_list_index_beyond_bounds", func(t *testing.T) {
var data = test.ParseData(`
a: [3, 4]
`)
result, _ := subject.DeleteChildValue(data, []string{"a", "5"})
test.AssertResult(t, fmt.Sprintf("%v", data), fmt.Sprintf("%v", result))
})
t.Run("TestDelete_list_index_out_of_bounds_by_1", func(t *testing.T) {
var data = test.ParseData(`
a: [3, 4]
`)
result, _ := subject.DeleteChildValue(data, []string{"a", "2"})
test.AssertResult(t, fmt.Sprintf("%v", data), fmt.Sprintf("%v", result))
})
t.Run("TestDelete_no_paths", func(t *testing.T) {
var data = test.ParseData(`
a: [3, 4]
b:
- name: test
`)
result, _ := subject.DeleteChildValue(data, []string{})
test.AssertResult(t, fmt.Sprintf("%v", data), fmt.Sprintf("%v", result))
})
t.Run("TestDelete_array_map_item", func(t *testing.T) {
var data = test.ParseData(`
b:
- name: fred
value: blah
- name: john
value: test
`)
var expected = test.ParseData(`
b:
- value: blah
- name: john
value: test
`)
result, _ := subject.DeleteChildValue(data, []string{"b", "0", "name"})
test.AssertResult(t, fmt.Sprintf("%v", expected), fmt.Sprintf("%v", result))
})
}

67
pkg/yqlib/delete_navigation_strategy.go Normal file
View File

@ -0,0 +1,67 @@
package yqlib
import (
"strconv"
yaml "gopkg.in/yaml.v3"
)
func DeleteNavigationStrategy(pathElementToDelete string) NavigationStrategy {
parser := NewPathParser()
return &NavigationStrategyImpl{
visitedNodes: []*NodeContext{},
pathParser: parser,
followAlias: func(nodeContext NodeContext) bool {
return false
},
autoCreateMap: func(nodeContext NodeContext) bool {
return true
},
visit: func(nodeContext NodeContext) error {
node := nodeContext.Node
log.Debug("need to find and delete %v in here", pathElementToDelete)
DebugNode(node)
if node.Kind == yaml.SequenceNode {
newContent, errorDeleting := deleteFromArray(node.Content, pathElementToDelete)
if errorDeleting != nil {
return errorDeleting
}
node.Content = newContent
} else if node.Kind == yaml.MappingNode {
node.Content = deleteFromMap(parser, node.Content, nodeContext.PathStack, pathElementToDelete)
}
return nil
},
}
}
func deleteFromMap(pathParser PathParser, contents []*yaml.Node, pathStack []interface{}, pathElementToDelete string) []*yaml.Node {
newContents := make([]*yaml.Node, 0)
for index := 0; index < len(contents); index = index + 2 {
keyNode := contents[index]
valueNode := contents[index+1]
if !pathParser.MatchesNextPathElement(NewNodeContext(keyNode, pathElementToDelete, []string{}, pathStack), keyNode.Value) {
log.Debug("adding node %v", keyNode.Value)
newContents = append(newContents, keyNode, valueNode)
} else {
log.Debug("skipping node %v", keyNode.Value)
}
}
return newContents
}
func deleteFromArray(content []*yaml.Node, pathElementToDelete string) ([]*yaml.Node, error) {
if pathElementToDelete == "*" {
return make([]*yaml.Node, 0), nil
}
var index, err = strconv.ParseInt(pathElementToDelete, 10, 64) // nolint
if err != nil {
return content, err
}
if index >= int64(len(content)) {
log.Debug("index %v is greater than content length %v", index, len(content))
return content, nil
}
return append(content[:index], content[index+1:]...), nil
}

44
pkg/yqlib/encoder.go Normal file
View File

@ -0,0 +1,44 @@
package yqlib
import (
"encoding/json"
"io"
yaml "gopkg.in/yaml.v3"
)
type Encoder interface {
Encode(node *yaml.Node) error
}
type yamlEncoder struct {
encoder *yaml.Encoder
}
func NewYamlEncoder(destination io.Writer) Encoder {
var encoder = yaml.NewEncoder(destination)
encoder.SetIndent(2)
return &yamlEncoder{encoder}
}
func (ye *yamlEncoder) Encode(node *yaml.Node) error {
return ye.encoder.Encode(node)
}
type jsonEncoder struct {
encoder *json.Encoder
}
func NewJsonEncoder(destination io.Writer) Encoder {
var encoder = json.NewEncoder(destination)
return &jsonEncoder{encoder}
}
func (je *jsonEncoder) Encode(node *yaml.Node) error {
var dataBucket interface{}
errorDecoding := node.Decode(&dataBucket)
if errorDecoding != nil {
return errorDecoding
}
return je.encoder.Encode(dataBucket)
}

21
pkg/yqlib/filter_matching_node_navigation_strategy.go Normal file
View File

@ -0,0 +1,21 @@
package yqlib
func FilterMatchingNodesNavigationStrategy(value string) NavigationStrategy {
return &NavigationStrategyImpl{
visitedNodes: []*NodeContext{},
pathParser: NewPathParser(),
followAlias: func(nodeContext NodeContext) bool {
return true
},
autoCreateMap: func(nodeContext NodeContext) bool {
return false
},
visit: func(nodeContext NodeContext) error {
return nil
},
shouldVisitExtraFn: func(nodeContext NodeContext) bool {
log.Debug("does %v match %v ? %v", nodeContext.Node.Value, value, nodeContext.Node.Value == value)
return matchesString(value, nodeContext.Node.Value)
},
}
}

167
pkg/yqlib/lib.go
View File

@ -1,68 +1,149 @@
package yqlib
import (
mergo "gopkg.in/imdario/mergo.v0"
"bytes"
"fmt"
"strconv"
"strings"
logging "gopkg.in/op/go-logging.v1"
yaml "gopkg.in/yaml.v3"
)
var log = logging.MustGetLogger("yq")
type UpdateCommand struct {
Command string
Path string
Value *yaml.Node
Overwrite bool
}
func DebugNode(value *yaml.Node) {
if value == nil {
log.Debug("-- node is nil --")
} else if log.IsEnabledFor(logging.DEBUG) {
buf := new(bytes.Buffer)
encoder := yaml.NewEncoder(buf)
errorEncoding := encoder.Encode(value)
if errorEncoding != nil {
log.Error("Error debugging node, %v", errorEncoding.Error())
}
encoder.Close()
log.Debug("Tag: %v", value.Tag)
log.Debug("%v", buf.String())
}
}
func pathStackToString(pathStack []interface{}) string {
return mergePathStackToString(pathStack, false)
}
func mergePathStackToString(pathStack []interface{}, appendArrays bool) string {
var sb strings.Builder
for index, path := range pathStack {
switch path.(type) {
case int:
if appendArrays {
sb.WriteString("[+]")
} else {
sb.WriteString(fmt.Sprintf("[%v]", path))
}
default:
sb.WriteString(fmt.Sprintf("%v", path))
}
if index < len(pathStack)-1 {
sb.WriteString(".")
}
}
return sb.String()
}
func guessKind(head string, tail []string, guess yaml.Kind) yaml.Kind {
log.Debug("tail %v", tail)
if len(tail) == 0 && guess == 0 {
log.Debug("end of path, must be a scalar")
return yaml.ScalarNode
} else if len(tail) == 0 {
return guess
}
var _, errorParsingInt = strconv.ParseInt(tail[0], 10, 64)
if tail[0] == "+" || errorParsingInt == nil {
return yaml.SequenceNode
}
pathParser := NewPathParser()
if (pathParser.IsPathExpression(tail[0]) || head == "**") && (guess == yaml.SequenceNode || guess == yaml.MappingNode) {
return guess
}
if guess == yaml.AliasNode {
log.Debug("guess was an alias, okey doke.")
return guess
}
log.Debug("forcing a mapping node")
log.Debug("yaml.SequenceNode %v", guess == yaml.SequenceNode)
log.Debug("yaml.ScalarNode %v", guess == yaml.ScalarNode)
return yaml.MappingNode
}
type YqLib interface {
ReadPath(dataBucket interface{}, path string) (interface{}, error)
WritePath(dataBucket interface{}, path string, value interface{}) interface{}
PrefixPath(dataBucket interface{}, prefix string) interface{}
DeletePath(dataBucket interface{}, path string) (interface{}, error)
Merge(dst interface{}, src interface{}, overwrite bool, append bool) error
Get(rootNode *yaml.Node, path string) ([]*NodeContext, error)
Update(rootNode *yaml.Node, updateCommand UpdateCommand, autoCreate bool) error
New(path string) yaml.Node
PathStackToString(pathStack []interface{}) string
MergePathStackToString(pathStack []interface{}, appendArrays bool) string
}
type lib struct {
navigator DataNavigator
parser PathParser
parser PathParser
}
func NewYqLib(l *logging.Logger) YqLib {
func NewYqLib() YqLib {
return &lib{
navigator: NewDataNavigator(l),
parser: NewPathParser(),
parser: NewPathParser(),
}
}
func (l *lib) ReadPath(dataBucket interface{}, path string) (interface{}, error) {
func (l *lib) Get(rootNode *yaml.Node, path string) ([]*NodeContext, error) {
var paths = l.parser.ParsePath(path)
return l.navigator.ReadChildValue(dataBucket, paths)
navigationStrategy := ReadNavigationStrategy()
navigator := NewDataNavigator(navigationStrategy)
error := navigator.Traverse(rootNode, paths)
return navigationStrategy.GetVisitedNodes(), error
}
func (l *lib) WritePath(dataBucket interface{}, path string, value interface{}) interface{} {
func (l *lib) PathStackToString(pathStack []interface{}) string {
return pathStackToString(pathStack)
}
func (l *lib) MergePathStackToString(pathStack []interface{}, appendArrays bool) string {
return mergePathStackToString(pathStack, appendArrays)
}
func (l *lib) New(path string) yaml.Node {
var paths = l.parser.ParsePath(path)
return l.navigator.UpdatedChildValue(dataBucket, paths, value)
newNode := yaml.Node{Kind: guessKind("", paths, 0)}
return newNode
}
func (l *lib) PrefixPath(dataBucket interface{}, prefix string) interface{} {
var paths = l.parser.ParsePath(prefix)
// Inverse order
for i := len(paths)/2 - 1; i >= 0; i-- {
opp := len(paths) - 1 - i
paths[i], paths[opp] = paths[opp], paths[i]
func (l *lib) Update(rootNode *yaml.Node, updateCommand UpdateCommand, autoCreate bool) error {
log.Debugf("%v to %v", updateCommand.Command, updateCommand.Path)
switch updateCommand.Command {
case "update":
var paths = l.parser.ParsePath(updateCommand.Path)
navigator := NewDataNavigator(UpdateNavigationStrategy(updateCommand, autoCreate))
return navigator.Traverse(rootNode, paths)
case "delete":
var paths = l.parser.ParsePath(updateCommand.Path)
lastBit, newTail := paths[len(paths)-1], paths[:len(paths)-1]
navigator := NewDataNavigator(DeleteNavigationStrategy(lastBit))
return navigator.Traverse(rootNode, newTail)
default:
return fmt.Errorf("Unknown command %v", updateCommand.Command)
}
var mapDataBucket = dataBucket
for _, key := range paths {
singlePath := []string{key}
mapDataBucket = l.navigator.UpdatedChildValue(nil, singlePath, mapDataBucket)
}
return mapDataBucket
}
func (l *lib) DeletePath(dataBucket interface{}, path string) (interface{}, error) {
var paths = l.parser.ParsePath(path)
return l.navigator.DeleteChildValue(dataBucket, paths)
}
func (l *lib) Merge(dst interface{}, src interface{}, overwrite bool, append bool) error {
if overwrite {
return mergo.Merge(dst, src, mergo.WithOverride)
} else if append {
return mergo.Merge(dst, src, mergo.WithAppendSlice)
}
return mergo.Merge(dst, src)
}

276
pkg/yqlib/lib_test.go
View File

@ -1,166 +1,176 @@
package yqlib
import (
"fmt"
"testing"
"github.com/mikefarah/yq/v2/test"
logging "gopkg.in/op/go-logging.v1"
"github.com/mikefarah/yq/v3/test"
)
func TestLib(t *testing.T) {
var log = logging.MustGetLogger("yq")
subject := NewYqLib(log)
subject := NewYqLib()
t.Run("TestReadPath", func(t *testing.T) {
var data = test.ParseData(`
---
b:
2: c
`)
got, _ := subject.ReadPath(data, "b.2")
test.AssertResult(t, `c`, got)
t.Run("PathStackToString_Empty", func(t *testing.T) {
emptyArray := make([]interface{}, 0)
got := subject.PathStackToString(emptyArray)
test.AssertResult(t, ``, got)
})
t.Run("TestReadPath_WithError", func(t *testing.T) {
var data = test.ParseData(`
---
b:
- c
`)
_, err := subject.ReadPath(data, "b.[a]")
if err == nil {
t.Fatal("Expected error due to invalid path")
}
t.Run("PathStackToString", func(t *testing.T) {
array := make([]interface{}, 3)
array[0] = "a"
array[1] = 0
array[2] = "b"
got := subject.PathStackToString(array)
test.AssertResult(t, `a.[0].b`, got)
})
t.Run("TestWritePath", func(t *testing.T) {
var data = test.ParseData(`
---
b:
2: c
`)
got := subject.WritePath(data, "b.3", "a")
test.AssertResult(t, `[{b [{2 c} {3 a}]}]`, fmt.Sprintf("%v", got))
t.Run("MergePathStackToString", func(t *testing.T) {
array := make([]interface{}, 3)
array[0] = "a"
array[1] = 0
array[2] = "b"
got := subject.MergePathStackToString(array, true)
test.AssertResult(t, `a.[+].b`, got)
})
t.Run("TestPrefixPath", func(t *testing.T) {
var data = test.ParseData(`
---
b:
2: c
`)
// t.Run("TestReadPath_WithError", func(t *testing.T) {
// var data = test.ParseData(`
// ---
// b:
// - c
// `)
got := subject.PrefixPath(data, "a.d")
test.AssertResult(t, `[{a [{d [{b [{2 c}]}]}]}]`, fmt.Sprintf("%v", got))
})
// _, err := subject.ReadPath(data, "b.[a]")
// if err == nil {
// t.Fatal("Expected error due to invalid path")
// }
// })
t.Run("TestDeletePath", func(t *testing.T) {
var data = test.ParseData(`
---
b:
2: c
3: a
`)
// t.Run("TestWritePath", func(t *testing.T) {
// var data = test.ParseData(`
// ---
// b:
// 2: c
// `)
got, _ := subject.DeletePath(data, "b.2")
test.AssertResult(t, `[{b [{3 a}]}]`, fmt.Sprintf("%v", got))
})
// got := subject.WritePath(data, "b.3", "a")
// test.AssertResult(t, `[{b [{2 c} {3 a}]}]`, fmt.Sprintf("%v", got))
// })
t.Run("TestDeletePath_WithError", func(t *testing.T) {
var data = test.ParseData(`
---
b:
- c
`)
// t.Run("TestPrefixPath", func(t *testing.T) {
// var data = test.ParseData(`
// ---
// b:
// 2: c
// `)
_, err := subject.DeletePath(data, "b.[a]")
if err == nil {
t.Fatal("Expected error due to invalid path")
}
})
// got := subject.PrefixPath(data, "a.d")
// test.AssertResult(t, `[{a [{d [{b [{2 c}]}]}]}]`, fmt.Sprintf("%v", got))
// })
t.Run("TestMerge", func(t *testing.T) {
var dst = test.ParseData(`
---
a: b
c: d
`)
var src = test.ParseData(`
---
a: 1
b: 2
`)
// t.Run("TestDeletePath", func(t *testing.T) {
// var data = test.ParseData(`
// ---
// b:
// 2: c
// 3: a
// `)
var mergedData = make(map[interface{}]interface{})
mergedData["root"] = dst
var mapDataBucket = make(map[interface{}]interface{})
mapDataBucket["root"] = src
// got, _ := subject.DeletePath(data, "b.2")
// test.AssertResult(t, `[{b [{3 a}]}]`, fmt.Sprintf("%v", got))
// })
err := subject.Merge(&mergedData, mapDataBucket, false, false)
if err != nil {
t.Fatal("Unexpected error")
}
test.AssertResult(t, `[{a b} {c d}]`, fmt.Sprintf("%v", mergedData["root"]))
})
// t.Run("TestDeletePath_WithError", func(t *testing.T) {
// var data = test.ParseData(`
// ---
// b:
// - c
// `)
t.Run("TestMerge_WithOverwrite", func(t *testing.T) {
var dst = test.ParseData(`
---
a: b
c: d
`)
var src = test.ParseData(`
---
a: 1
b: 2
`)
// _, err := subject.DeletePath(data, "b.[a]")
// if err == nil {
// t.Fatal("Expected error due to invalid path")
// }
// })
var mergedData = make(map[interface{}]interface{})
mergedData["root"] = dst
var mapDataBucket = make(map[interface{}]interface{})
mapDataBucket["root"] = src
// t.Run("TestMerge", func(t *testing.T) {
// var dst = test.ParseData(`
// ---
// a: b
// c: d
// `)
// var src = test.ParseData(`
// ---
// a: 1
// b: 2
// `)
err := subject.Merge(&mergedData, mapDataBucket, true, false)
if err != nil {
t.Fatal("Unexpected error")
}
test.AssertResult(t, `[{a 1} {b 2}]`, fmt.Sprintf("%v", mergedData["root"]))
})
// var mergedData = make(map[interface{}]interface{})
// mergedData["root"] = dst
// var mapDataBucket = make(map[interface{}]interface{})
// mapDataBucket["root"] = src
t.Run("TestMerge_WithAppend", func(t *testing.T) {
var dst = test.ParseData(`
---
a: b
c: d
`)
var src = test.ParseData(`
---
a: 1
b: 2
`)
// err := subject.Merge(&mergedData, mapDataBucket, false, false)
// if err != nil {
// t.Fatal("Unexpected error")
// }
// test.AssertResult(t, `[{a b} {c d}]`, fmt.Sprintf("%v", mergedData["root"]))
// })
var mergedData = make(map[interface{}]interface{})
mergedData["root"] = dst
var mapDataBucket = make(map[interface{}]interface{})
mapDataBucket["root"] = src
// t.Run("TestMerge_WithOverwrite", func(t *testing.T) {
// var dst = test.ParseData(`
// ---
// a: b
// c: d
// `)
// var src = test.ParseData(`
// ---
// a: 1
// b: 2
// `)
err := subject.Merge(&mergedData, mapDataBucket, false, true)
if err != nil {
t.Fatal("Unexpected error")
}
test.AssertResult(t, `[{a b} {c d} {a 1} {b 2}]`, fmt.Sprintf("%v", mergedData["root"]))
})
// var mergedData = make(map[interface{}]interface{})
// mergedData["root"] = dst
// var mapDataBucket = make(map[interface{}]interface{})
// mapDataBucket["root"] = src
t.Run("TestMerge_WithError", func(t *testing.T) {
err := subject.Merge(nil, nil, false, false)
if err == nil {
t.Fatal("Expected error due to nil")
}
})
// err := subject.Merge(&mergedData, mapDataBucket, true, false)
// if err != nil {
// t.Fatal("Unexpected error")
// }
// test.AssertResult(t, `[{a 1} {b 2}]`, fmt.Sprintf("%v", mergedData["root"]))
// })
// t.Run("TestMerge_WithAppend", func(t *testing.T) {
// var dst = test.ParseData(`
// ---
// a: b
// c: d
// `)
// var src = test.ParseData(`
// ---
// a: 1
// b: 2
// `)
// var mergedData = make(map[interface{}]interface{})
// mergedData["root"] = dst
// var mapDataBucket = make(map[interface{}]interface{})
// mapDataBucket["root"] = src
// err := subject.Merge(&mergedData, mapDataBucket, false, true)
// if err != nil {
// t.Fatal("Unexpected error")
// }
// test.AssertResult(t, `[{a b} {c d} {a 1} {b 2}]`, fmt.Sprintf("%v", mergedData["root"]))
// })
// t.Run("TestMerge_WithError", func(t *testing.T) {
// err := subject.Merge(nil, nil, false, false)
// if err == nil {
// t.Fatal("Expected error due to nil")
// }
// })
}

152
pkg/yqlib/navigation_strategy.go Normal file
View File

@ -0,0 +1,152 @@
package yqlib
import (
"fmt"
yaml "gopkg.in/yaml.v3"
)
type NodeContext struct {
Node *yaml.Node
Head string
Tail []string
PathStack []interface{}
}
func NewNodeContext(node *yaml.Node, head string, tail []string, pathStack []interface{}) NodeContext {
newTail := make([]string, len(tail))
copy(newTail, tail)
newPathStack := make([]interface{}, len(pathStack))
copy(newPathStack, pathStack)
return NodeContext{
Node: node,
Head: head,
Tail: newTail,
PathStack: newPathStack,
}
}
type NavigationStrategy interface {
FollowAlias(nodeContext NodeContext) bool
AutoCreateMap(nodeContext NodeContext) bool
Visit(nodeContext NodeContext) error
// node key is the string value of the last element in the path stack
// we use it to match against the pathExpression in head.
ShouldTraverse(nodeContext NodeContext, nodeKey string) bool
GetVisitedNodes() []*NodeContext
DebugVisitedNodes()
GetPathParser() PathParser
}
type NavigationStrategyImpl struct {
followAlias func(nodeContext NodeContext) bool
autoCreateMap func(nodeContext NodeContext) bool
visit func(nodeContext NodeContext) error
shouldVisitExtraFn func(nodeContext NodeContext) bool
visitedNodes []*NodeContext
pathParser PathParser
}
func (ns *NavigationStrategyImpl) GetPathParser() PathParser {
return ns.pathParser
}
func (ns *NavigationStrategyImpl) GetVisitedNodes() []*NodeContext {
return ns.visitedNodes
}
func (ns *NavigationStrategyImpl) FollowAlias(nodeContext NodeContext) bool {
return ns.followAlias(nodeContext)
}
func (ns *NavigationStrategyImpl) AutoCreateMap(nodeContext NodeContext) bool {
return ns.autoCreateMap(nodeContext)
}
func (ns *NavigationStrategyImpl) ShouldTraverse(nodeContext NodeContext, nodeKey string) bool {
// we should traverse aliases (if enabled), but not visit them :/
if len(nodeContext.PathStack) == 0 {
return true
}
if ns.alreadyVisited(nodeContext.PathStack) {
return false
}
return (nodeKey == "<<" && ns.FollowAlias(nodeContext)) || (nodeKey != "<<" &&
ns.pathParser.MatchesNextPathElement(nodeContext, nodeKey))
}
func (ns *NavigationStrategyImpl) shouldVisit(nodeContext NodeContext) bool {
pathStack := nodeContext.PathStack
if len(pathStack) == 0 {
return true
}
log.Debug("tail len %v", len(nodeContext.Tail))
// SOMETHING HERE!
if ns.alreadyVisited(pathStack) || len(nodeContext.Tail) != 0 {
return false
}
nodeKey := fmt.Sprintf("%v", pathStack[len(pathStack)-1])
log.Debug("nodeKey: %v, nodeContext.Head: %v", nodeKey, nodeContext.Head)
// only visit aliases if its an exact match
return ((nodeKey == "<<" && nodeContext.Head == "<<") || (nodeKey != "<<" &&
ns.pathParser.MatchesNextPathElement(nodeContext, nodeKey))) && (ns.shouldVisitExtraFn == nil || ns.shouldVisitExtraFn(nodeContext))
}
func (ns *NavigationStrategyImpl) Visit(nodeContext NodeContext) error {
log.Debug("Visit?, %v, %v", nodeContext.Head, pathStackToString(nodeContext.PathStack))
DebugNode(nodeContext.Node)
if ns.shouldVisit(nodeContext) {
log.Debug("yep, visiting")
// pathStack array must be
// copied, as append() may sometimes reuse and modify the array
ns.visitedNodes = append(ns.visitedNodes, &nodeContext)
ns.DebugVisitedNodes()
return ns.visit(nodeContext)
}
log.Debug("nope, skip it")
return nil
}
func (ns *NavigationStrategyImpl) DebugVisitedNodes() {
log.Debug("Visited Nodes:")
for _, candidate := range ns.visitedNodes {
log.Debug(" - %v", pathStackToString(candidate.PathStack))
}
}
func (ns *NavigationStrategyImpl) alreadyVisited(pathStack []interface{}) bool {
log.Debug("checking already visited pathStack: %v", pathStackToString(pathStack))
for _, candidate := range ns.visitedNodes {
candidatePathStack := candidate.PathStack
if patchStacksMatch(candidatePathStack, pathStack) {
log.Debug("paths match, already seen it")
return true
}
}
log.Debug("never seen it before!")
return false
}
func patchStacksMatch(path1 []interface{}, path2 []interface{}) bool {
log.Debug("checking against path: %v", pathStackToString(path1))
if len(path1) != len(path2) {
return false
}
for index, p1Value := range path1 {
p2Value := path2[index]
if p1Value != p2Value {
return false
}
}
return true
}

71
pkg/yqlib/path_parser.go
View File

@ -1,7 +1,14 @@
package yqlib
import (
"strconv"
"strings"
)
type PathParser interface {
ParsePath(path string) []string
MatchesNextPathElement(nodeContext NodeContext, nodeKey string) bool
IsPathExpression(pathElement string) bool
}
type pathParser struct{}
@ -10,7 +17,66 @@ func NewPathParser() PathParser {
return &pathParser{}
}
func matchesString(expression string, value string) bool {
var prefixMatch = strings.TrimSuffix(expression, "*")
if prefixMatch != expression {
log.Debug("prefix match, %v", strings.HasPrefix(value, prefixMatch))
return strings.HasPrefix(value, prefixMatch)
}
return value == expression
}
func (p *pathParser) IsPathExpression(pathElement string) bool {
return pathElement == "*" || pathElement == "**" || strings.Contains(pathElement, "==")
}
/**
* node: node that we may traverse/visit
* head: path element expression to match against
* tail: remaining path element expressions
* pathStack: stack of actual paths we've matched to get to node
* nodeKey: actual value of this nodes 'key' or index.
*/
func (p *pathParser) MatchesNextPathElement(nodeContext NodeContext, nodeKey string) bool {
head := nodeContext.Head
if head == "**" || head == "*" {
return true
}
if strings.Contains(head, "==") {
log.Debug("ooh deep recursion time")
result := strings.SplitN(head, "==", 2)
path := strings.TrimSpace(result[0])
value := strings.TrimSpace(result[1])
log.Debug("path %v", path)
log.Debug("value %v", value)
DebugNode(nodeContext.Node)
navigationStrategy := FilterMatchingNodesNavigationStrategy(value)
navigator := NewDataNavigator(navigationStrategy)
err := navigator.Traverse(nodeContext.Node, p.ParsePath(path))
if err != nil {
log.Error(err.Error())
}
//crap handle error
log.Debug("done deep recursing, found %v matches", len(navigationStrategy.GetVisitedNodes()))
return len(navigationStrategy.GetVisitedNodes()) > 0
}
if head == "+" {
log.Debug("head is +, nodeKey is %v", nodeKey)
var _, err = strconv.ParseInt(nodeKey, 10, 64) // nolint
if err == nil {
return true
}
}
return matchesString(head, nodeKey)
}
func (p *pathParser) ParsePath(path string) []string {
if path == "" {
return []string{}
}
return p.parsePathAccum([]string{}, path)
}
@ -30,9 +96,12 @@ func (p *pathParser) nextYamlPath(path string) (pathElement string, remaining st
case '"':
// e.g "a.b".blah.cat -> we need to return "a.b" and "blah.cat"
return p.search(path[1:], []uint8{'"'}, true)
case '(':
// e.g "a.b".blah.cat -> we need to return "a.b" and "blah.cat"
return p.search(path[1:], []uint8{')'}, true)
default:
// e.g "a.blah.cat" -> return "a" and "blah.cat"
return p.search(path[0:], []uint8{'.', '['}, false)
return p.search(path[0:], []uint8{'.', '[', '"', '('}, false)
}
}

55
pkg/yqlib/path_parser_test.go
View File

@ -3,14 +3,18 @@ package yqlib
import (
"testing"
"github.com/mikefarah/yq/v2/test"
"github.com/mikefarah/yq/v3/test"
)
var parser = NewPathParser()
var parsePathsTests = []struct {
path string
expectedPaths []string
}{
{"a.b", []string{"a", "b"}},
{"a.b.**", []string{"a", "b", "**"}},
{"a.b.*", []string{"a", "b", "*"}},
{"a.b[0]", []string{"a", "b", "0"}},
{"a.b.d[+]", []string{"a", "b", "d", "+"}},
{"a", []string{"a"}},
@ -22,8 +26,53 @@ var parsePathsTests = []struct {
{"[0]", []string{"0"}},
}
func TestParsePath(t *testing.T) {
func TestPathParserParsePath(t *testing.T) {
for _, tt := range parsePathsTests {
test.AssertResultComplex(t, tt.expectedPaths, NewPathParser().ParsePath(tt.path))
test.AssertResultComplex(t, tt.expectedPaths, parser.ParsePath(tt.path))
}
}
func TestPathParserMatchesNextPathElementSplat(t *testing.T) {
var node = NodeContext{Head: "*"}
test.AssertResult(t, true, parser.MatchesNextPathElement(node, ""))
}
func TestPathParserMatchesNextPathElementDeepSplat(t *testing.T) {
var node = NodeContext{Head: "**"}
test.AssertResult(t, true, parser.MatchesNextPathElement(node, ""))
}
func TestPathParserMatchesNextPathElementAppendArrayValid(t *testing.T) {
var node = NodeContext{Head: "+"}
test.AssertResult(t, true, parser.MatchesNextPathElement(node, "3"))
}
func TestPathParserMatchesNextPathElementAppendArrayInvalid(t *testing.T) {
var node = NodeContext{Head: "+"}
test.AssertResult(t, false, parser.MatchesNextPathElement(node, "cat"))
}
func TestPathParserMatchesNextPathElementPrefixMatchesWhole(t *testing.T) {
var node = NodeContext{Head: "cat*"}
test.AssertResult(t, true, parser.MatchesNextPathElement(node, "cat"))
}
func TestPathParserMatchesNextPathElementPrefixMatchesStart(t *testing.T) {
var node = NodeContext{Head: "cat*"}
test.AssertResult(t, true, parser.MatchesNextPathElement(node, "caterpillar"))
}
func TestPathParserMatchesNextPathElementPrefixMismatch(t *testing.T) {
var node = NodeContext{Head: "cat*"}
test.AssertResult(t, false, parser.MatchesNextPathElement(node, "dog"))
}
func TestPathParserMatchesNextPathElementExactMatch(t *testing.T) {
var node = NodeContext{Head: "farahtek"}
test.AssertResult(t, true, parser.MatchesNextPathElement(node, "farahtek"))
}
func TestPathParserMatchesNextPathElementExactMismatch(t *testing.T) {
var node = NodeContext{Head: "farahtek"}
test.AssertResult(t, false, parser.MatchesNextPathElement(node, "othertek"))
}

17
pkg/yqlib/read_navigation_strategy.go Normal file
View File

@ -0,0 +1,17 @@
package yqlib
func ReadNavigationStrategy() NavigationStrategy {
return &NavigationStrategyImpl{
visitedNodes: []*NodeContext{},
pathParser: NewPathParser(),
followAlias: func(nodeContext NodeContext) bool {
return true
},
autoCreateMap: func(nodeContext NodeContext) bool {
return false
},
visit: func(nodeContext NodeContext) error {
return nil
},
}
}

35
pkg/yqlib/update_navigation_strategy.go Normal file
View File

@ -0,0 +1,35 @@
package yqlib
func UpdateNavigationStrategy(updateCommand UpdateCommand, autoCreate bool) NavigationStrategy {
return &NavigationStrategyImpl{
visitedNodes: []*NodeContext{},
pathParser: NewPathParser(),
followAlias: func(nodeContext NodeContext) bool {
return false
},
autoCreateMap: func(nodeContext NodeContext) bool {
return autoCreate
},
visit: func(nodeContext NodeContext) error {
node := nodeContext.Node
changesToApply := updateCommand.Value
if updateCommand.Overwrite || node.Value == "" {
log.Debug("going to update")
DebugNode(node)
log.Debug("with")
DebugNode(changesToApply)
node.Value = changesToApply.Value
node.Tag = changesToApply.Tag
node.Kind = changesToApply.Kind
node.Style = changesToApply.Style
node.Content = changesToApply.Content
node.HeadComment = changesToApply.HeadComment
node.LineComment = changesToApply.LineComment
node.FootComment = changesToApply.FootComment
} else {
log.Debug("skipping update as node already has value %v and overwriteFlag is ", node.Value, updateCommand.Overwrite)
}
return nil
},
}
}

28
pkg/yqlib/value_parser.go
View File

@ -1,35 +1,23 @@
package yqlib
import (
"strconv"
yaml "gopkg.in/yaml.v3"
)
type ValueParser interface {
ParseValue(argument string) interface{}
Parse(argument string, customTag string) *yaml.Node
}
type valueParser struct{}
type valueParser struct {
}
func NewValueParser() ValueParser {
return &valueParser{}
}
func (v *valueParser) ParseValue(argument string) interface{} {
var value, err interface{}
var inQuotes = len(argument) > 0 && argument[0] == '"'
if !inQuotes {
value, err = strconv.ParseFloat(argument, 64)
if err == nil {
return value
}
value, err = strconv.ParseBool(argument)
if err == nil {
return value
}
if argument == "[]" {
return make([]interface{}, 0)
}
return argument
func (v *valueParser) Parse(argument string, customTag string) *yaml.Node {
if argument == "[]" {
return &yaml.Node{Tag: "!!seq", Kind: yaml.SequenceNode}
}
return argument[1 : len(argument)-1]
return &yaml.Node{Value: argument, Tag: customTag, Kind: yaml.ScalarNode}
}

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