Diffusor

A pure-python diffing utility using Google’s diff-match-patch.

This is a utility script for a very specific purpose, namely easy generation and application of diffs for Python-centric projects, programmatically from within Python.

This tool serves exactly two functions:

1. Create diffs between two versions of the same file
2. Apply diffs to a file

It works on a per-file basis.

If you don’t have a specific use case for this, you’re probably better off using Git diffs and the ubiquitous Linux patch tool. Diffusor exists specifically for easing the patch-apply workflow within Python programs, nothing more, nothing less.

Installation

Diffusor can be installed via pip:

$ pip install diffusor

Please note that Diffusor requires Python 3 and will not provide backwards compatibility for Python 2 for the foreseeable future.

Usage

To create a diff:

diffusor diff <source_file> <modified_file> -n <target_file>

To apply a diff:

diffusor apply <patch_file> -t <target_file>

Command Line Interface

Usage: diffusor.py [OPTIONS] COMMAND [ARGS]...
  A pure-python diffing utility using Google's diff-match-patch.
  This tool serves exactly two functions:
  1. Create diffs between two versions of the same file
  2. Apply diffs to a file
  Commands can be abbreviated by the shortest unique string.
  For example:
      diff -> d
      apply -> a
  Examples of full commands:
      diffusor diff <source_file> <modified_file> -n <target_file>
      diffusor apply <patch_file> -t <target_file>
Options:
  -d, --debug / -nd, --no-debug  Print debug information or only regular
                                 output
  --help                         Show this message and exit.
Commands:
  apply
  diff