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https://jdp.github.io/jarg/

shorthand JSON and form encoding syntax in the shell
https://jdp.github.io/jarg/

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shorthand JSON and form encoding syntax in the shell

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README

        

====
jarg
====

.. image:: https://travis-ci.org/jdp/jarg.svg?branch=master
:target: https://travis-ci.org/jdp/jarg

**jarg** is an encoding shorthand for your shell.
It is a command-line utility that makes generating data in formats like JSON, YAML, and form encoding easier in the shell.

Installation
------------

Install from PyPI_::

$ pip install jarg

Usage
-----

Each argument to **jarg** should be in the format of `name=value`.
Values are interpreted as their closest native encoding value, and the default dialect is JSON.
The most common case is probably string names and values::

$ jarg foo=bar baz=quux
{"foo": "bar", "baz": "quux"}

Floats and integers will work too::

$ jarg foo=10 bar=4.2
{"foo": 10, "bar": 4.2}

The value is optional.
If you leave it out, it is interpreted as ``null``::

$ jarg foo
{"foo": null}

The `name` portions have the same syntax and semantics as `HTML JSON`_ names::

$ jarg foo[]=bar foo[]=baz bar[baz]=quux
{"foo": ["bar", "baz"], "bar": {"baz": "quux"}}

You can also write literal values directly, using the `name:=value` syntax.
That lets you write things like booleans, lists, and explicit strings::

$ jarg foo:=true bar:=\"123\"
{"foo": true, "bar": "123"}
$ jarg foo:=[1,2,3]
{"foo": [1, 2, 3]}

Dialects
--------

The default dialect is JSON, and includes support for YAML and form encoding.

To use the YAML dialect, use the ``-y``/``--yaml`` switch::

$ jarg -y name=jarg type="cli tool" traits[]=dope traits[]=rad
---
name: jarg
traits: [dope, rad]
type: cli tool

You can switch to the form encoding dialect with the ``-f``/``--form`` switch::

$ jarg -f foo=bar baz="jarg is dope"
foo=bar&baz=jarg+is+dope

.. _PyPI: http://pypi.python.org/
.. _`HTML JSON`: http://www.w3.org/TR/html-json-forms/