cj is a lightweight command-line tool to process JSON files blazingly fast :boom: (I had to say it because it is written in rust :stuckouttonguewinkingeye:).
It is in very early stage of development so there's lots of room to improve. (Feature requests and PR's are very welcome.) That being said, it can prettify / minify json input, process json-path expressions and prints out the results to stdout.
Right now only way to install is using cargo install or building it from the source with cargo build command.
``` cj 0.1.0
USAGE: cj [OPTIONS] [--] [STDIN]
ARGS:
OPTIONS:
-c, --compress compress JSON input
-f, --filters
Assuming that you have test.json file in cwd with the following content, when no filter expression is given the default behaviour is pretty printing the json input. (Coloring support is coming soon...).
```
$ cat test.json | cj
$ cj -p test.json
{
"store": {
"bicycle": {
"color": "red",
"price": 19.95
},
"book": [
{
"author": "Nigel Rees",
"category": "reference",
"price": 8.95,
"title": "Sayings of the Century"
},
{
"author": "Evelyn Waugh",
"category": "fiction",
"price": 12.99,
"title": "Sword of Honour"
},
{
"author": "Herman Melville",
"category": "fiction",
"isbn": "0-553-21311-3",
"price": 8.99,
"title": "Moby Dick"
},
{
"author": "J. R. R. Tolkien",
"category": "fiction",
"isbn": "0-395-19395-8",
"price": 22.99,
"title": "The Lord of the Rings"
}
]
}
}
Filter books which costs lesser than 10:
$ cj -f $.store.book[\?(\@.price\ \<\ 10)].title
You can also chain the filters:
$ cj -f '$.store.book[?(@.price < 10)].title' $..price
```
You can find more information about json path expressions here.
Inspiration for this project comes from the beautiful tool jq. You may check that out for a more feature-rich version of this project or in case you want a json processor tool wihout having to install rust/cargo on your system.
Thanks to @besok for the jsoppath-rust library.