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README now links to doco
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README.md
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README.md
@ -21,12 +21,15 @@ go get github.com/mikefarah/yaml
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- Convert from yaml to json
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- Pipe data in by using '-'
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## Read examples
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## [Usage](http://mikefarah.github.io/yaml/)
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Check out the [documentation](http://mikefarah.github.io/yaml/) for more detailed and advanced usage.
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### Read
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```
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yaml r <yaml file> <path>
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```
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### Basic
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Given a sample.yaml file of:
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```yaml
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b:
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@ -38,86 +41,10 @@ yaml r sample.yaml b.c
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```
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will output the value of '2'.
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### Reading from STDIN
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Given a sample.yaml file of:
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```bash
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cat sample.yaml | yaml r - b.c
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```
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will output the value of '2'.
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### Splat
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Given a sample.yaml file of:
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```yaml
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---
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bob:
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item1:
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cats: bananas
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item2:
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cats: apples
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```
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then
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```bash
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yaml r sample.yaml bob.*.cats
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```
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will output
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```yaml
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- bananas
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- apples
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```
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### Handling '.' in the yaml key
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Given a sample.yaml file of:
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```yaml
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b.x:
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c: 2
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```
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then
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```bash
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yaml r sample.yaml \"b.x\".c
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```
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will output the value of '2'.
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### Arrays
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You can give an index to access a specific element:
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e.g.: given a sample file of
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```yaml
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b:
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e:
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- name: fred
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value: 3
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- name: sam
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value: 4
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```
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then
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```
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yaml r sample.yaml b.e[1].name
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```
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will output 'sam'
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### Array Splat
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e.g.: given a sample file of
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```yaml
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b:
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e:
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- name: fred
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value: 3
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- name: sam
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value: 4
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```
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then
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```
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yaml r sample.yaml b.e[*].name
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```
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will output:
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```
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- fred
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- sam
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```
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## Update examples
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## Update
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Existing yaml files can be updated via the write command
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### Update to stdout
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Given a sample.yaml file of:
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```yaml
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b:
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@ -133,76 +60,7 @@ b:
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c: cat
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```
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### Update from STDIN
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```bash
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cat sample.yaml | yaml w - b.c blah
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```
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### Adding new fields
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Any missing fields in the path will be created on the fly.
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Given a sample.yaml file of:
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```yaml
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b:
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c: 2
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```
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then
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```bash
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yaml w sample.yaml b.d[0] "new thing"
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```
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will output:
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```yaml
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b:
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c: cat
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d:
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- new thing
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```
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### Updating yaml in-place
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Given a sample.yaml file of:
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```yaml
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b:
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c: 2
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```
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then
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```bash
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yaml w -i sample.yaml b.c cat
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```
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will update the sample.yaml file so that the value of 'c' is cat.
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### Updating multiple values with a script
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Given a sample.yaml file of:
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```yaml
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b:
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c: 2
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e:
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- name: Billy Bob
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```
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and a script update_instructions.yaml of:
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```yaml
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b.c: 3
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b.e[0].name: Howdy Partner
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```
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then
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```bash
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yaml w -s update_instructions.yaml sample.yaml
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```
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will output:
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```yaml
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b:
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c: 3
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e:
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- name: Howdy Partner
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```
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And, of course, you can pipe the instructions in using '-':
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```bash
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cat update_instructions.yaml | yaml w -s - sample.yaml
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```
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## New Examples
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## Create
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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.
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### Creating a simple yaml file
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@ -215,33 +73,6 @@ b:
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c: cat
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```
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### Creating using a create script
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Create scripts follow the same format as the update scripts.
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Given a script create_instructions.yaml of:
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```yaml
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b.c: 3
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b.e[0].name: Howdy Partner
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```
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then
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```bash
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yaml n -s create_instructions.yaml
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```
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will output:
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```yaml
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b:
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c: 3
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e:
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- name: Howdy Partner
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```
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You can also pipe the instructions in:
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```bash
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cat create_instructions.yaml | yaml n -s -
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```
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## Converting to and from json
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### Yaml2json
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