YJ - YAML to JSON

Simple command line tool to convert a YAML input file into a JSON output file.

How to, etc.

Built in help

$ yj --help
yj 1.1.25
Bruce Adams <bruce.adams@acm.org>
Read YAML, write JSON

USAGE:
    yj.exe [FLAGS] [OPTIONS] [input]

FLAGS:
    -c, --compact    Use compact formatting for the JSON output.
    -h, --help       Prints help information
    -j, --json       Parse the input as JSON. For most use
                     cases, this option makes no difference.
                     Valid JSON is valid YAML, so JSON input
                     will (should?) parse correctly even when
                     being handled with the YAML parser. Use
                     this option when you want failure (instead
                     of weird results) when the input is invalid
                     JSON.
    -V, --version    Prints version information
    -y, --yaml       Format the output as YAML instead of JSON.

OPTIONS:
    -o, --output <output>
            Output file name for the JSON. Defaults to stdout.


ARGS:
    <input>    Input YAML file name. Defaults to stdin.

Installing

Local build and install with cargo:

$ cargo install yj

Prebuilt binaries are available on Github releases for 64bit x86 for Windows, Linux and macOS.

On macOS, the prebuilt binary can be installed using Homebrew.

$ brew tap bruceadams/utilities
$ brew install yj

Minimal Docker images are available on Docker Hub:

$ docker pull bruceadams/yj

Example runs

$ cat .travis.yml
language: rust
os:
  - linux
  - osx
  - windows
rust:
  - stable
  - beta
  - nightly
matrix:
  allow_failures:
    - rust: nightly
  fast_finish: true
$ yj .travis.yml
{
  "language": "rust",
  "os": [
    "linux",
    "osx",
    "windows"
  ],
  "rust": [
    "stable",
    "beta",
    "nightly"
  ],
  "matrix": {
    "allow_failures": [
      {
        "rust": "nightly"
      }
    ],
    "fast_finish": true
  }
}
$ echo pi: 3.1415926 | yj
{
  "pi": 3.1415926
}
$ echo pi: 3.1415926 | yj -c
{"pi":3.1415926}$

Build

Build it your self with Rust 2018, which needs a recent installation of Rust. Get Rust installed from https://rustup.rs/.

cargo build