Matthew Wang 58bb01b0a7 Performance enhancement 11 years ago
img document update; images 11 years ago
tests Script and make targets for profiling 11 years ago
.gitignore Script and make targets for profiling 11 years ago
.travis.yml clean up for travis CI 11 years ago
CHANGES - Fixed incorrect yield on diff missing eof - Fixed a bug in diff format probe - Handle keyboard interrupt and large diffs in non-color mode - Code clean up 11 years ago
LICENSE Read version from source code; add --version; try protect my email from spambot 11 years ago
MANIFEST.in Use wrapper `cdiff` instead of symlink for future unit test; doc update 11 years ago
Makefile Script and make targets for profiling 11 years ago
README.rst - Fixed incorrect yield on diff missing eof - Fixed a bug in diff format probe - Handle keyboard interrupt and large diffs in non-color mode - Code clean up 11 years ago
cdiff Better patch parser; support svn log --diff 11 years ago
cdiff.py Performance enhancement `make profile` got better result: 0.717 seconds -> 0.394 seconds 11 years ago
setup.py Remove unused imports 11 years ago

README.rst

Cdiff
=====

.. image:: https://travis-ci.org/ymattw/cdiff.png?branch=master
:target: https://travis-ci.org/ymattw/cdiff
:alt: Build status

Term based tool to view **colored**, **incremental** diff in *Git/Mercurial/Svn*
workspace, given patch or two files, or from stdin, with **side by side** and
**auto pager** support. Requires python (>= 2.5.0) and ``less``.

.. image:: http://ymattw.github.com/cdiff/img/default.png
:alt: default
:align: center

.. image:: http://ymattw.github.com/cdiff/img/side-by-side.png
:alt: side by side
:align: center
:width: 900 px

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

Install with pip
~~~~~~~~~~~~~~~~

Cdiff is already listed on `PyPI `_, you can
install with ``pip`` if you have the tool.

.. code:: sh

pip install --upgrade cdiff

Install with setup.py
~~~~~~~~~~~~~~~~~~~~~

You can also run the setup.py from the source if you don't have ``pip``.

.. code:: sh

git clone https://github.com/ymattw/cdiff.git
cd cdiff
./setup.py install

Download directly
~~~~~~~~~~~~~~~~~

Just save `cdiff.py `_ to
whatever directory which is in your ``$PATH``, for example, ``$HOME/bin`` is in
my ``$PATH``, so I save the script there and name as ``cdiff``.

.. code:: sh

curl -ksS https://raw.github.com/ymattw/cdiff/master/cdiff.py > ~/bin/cdiff
chmod +x ~/bin/cdiff

Usage
-----

Show usage:

.. code:: sh

cdiff -h

Read diff from local modification in a *Git/Mercurial/Svn* workspace:

.. code:: sh

cd proj-workspace
cdiff # view colored incremental udiff
cdiff -s # view side by side
cdiff -s -w 90 # use text width 90 other than default 80

Read the log (e.g. ``git log -p``) in a *Git/Mercurial/Svn* workspace:

.. code:: sh

cd proj-workspace
cdiff -l
cdiff -ls # equivalent to ``cdiff -l -s``
cdiff -ls -w90

Pipe in a diff:

.. code:: sh

git log -p -2 | cdiff -s
git show 15bfa5 | cdiff -s
svn diff -r PREV | cdiff -s

View a diff (patch) file:

.. code:: sh

cdiff foo.patch
cdiff foo.patch -s
cdiff foo.patch -s -w 90

View diff between two files (wrapper of ``diff``):

.. code:: sh

cdiff foo foo.new # equivalent to diff -u foo foo.new | cdiff
cdiff foo foo.new -s

Redirect output to another patch file is safe:

.. code:: sh

svn diff -r PREV | cdiff -s > my.patch

Notes
-----

- Works with python >= 2.5.0 (subprocess.Popen seems not working with PIPE in
2.4.3, maybe you can fix it)
- Only takes unified diff for input
- Side by side mode has alignment problem for wide chars
- Pull requests are very welcome (please run ``make test test3`` to verify)

See also
--------

I have another tool `coderev `_ which
generates side-by-side diff pages for code review from two given files or
directories, I found it's not easy to extend to support git so invented
`cdiff`. Idea of ansi color markup is also from project `colordiff
`_.