https://github.com/karimsa/json
Parse JSON objects from shell scripts.
https://github.com/karimsa/json
go json parser shell
Last synced: 4 months ago
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Parse JSON objects from shell scripts.
- Host: GitHub
- URL: https://github.com/karimsa/json
- Owner: karimsa
- Created: 2018-01-06T00:35:28.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2018-01-06T01:01:23.000Z (over 7 years ago)
- Last Synced: 2025-02-18T03:38:58.251Z (4 months ago)
- Topics: go, json, parser, shell
- Language: Go
- Homepage:
- Size: 798 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# json
Parse JSON objects from shell scripts.
**Install**: `go get -u github.com/karimsa/json`
## Usage
To read a json file from the shell, just pipe it to the json command and eval the result.
```shell
$ cat sample_file.json
{
"message": "hello world"
}
$ eval "$(json < sample_file.json)"
$ echo ${message}
hello world
```
To scope all keys to a given key, pass that key as a parameter to json.
```shell
$ cat sample_file.json
{
"message": "hello world"
}
$ eval "$(json obj < sample_file.json)"
$ echo ${obj_message}
hello world
```
Object paths use `_` instead of `.` - so `path.to.key` becomes `path_to_key`.
Arrays are a bit weird though. My goal was to keep this utility POSIX compliant so it is
as universal as possible. The element index will be a suffix to the variable. To retrieve
the value dynamically, you need to use a bit of `eval` hacking. Here's a pretty function that
can do it for you:
```shell
function at () {
echo "$(eval echo "\${${1}_${2}${3}}")"
}
```
For a more complete example, see [this](example/test.sh).
## License
Licensed under MIT license.
Copyright (C) 2017-present Karim Alibhai.