Colorizing and autopaging svn diffs and other commands

I can't remember the last time I jacked off to black and white pornography.

Can you?

OF COURSE YOU CANT! Color is fucking awesome! No one yanks their crank to black and white shit anymore.

Once you've tasted color, you can never go back.

This brings us to the subject of version control. Over the last few years I've been spoiled by git, but have recently switched jobs and been using svn again. Using git has taught me to actually care what I'm committing — as opposed to just creating one giant commit at the end of the day — which has meant I've been looking at lots of diffs.

Git gives you lovely colorized, paged diffs that frequently stiffen the schlong. While svn, on the other hand, still gives you the same uncolored, unpaged horse shit as it did several years ago! I can't fucking believe the meat puppets at svn haven't gotten their asses into gear and stolen some basic UI ideas from the competition. WTF guys?!

Here's how you enable color for everything in git:

git config --global color.ui always

There are more granular options if you want them, but fuck that, color is awesome!

Svn has no such option. So I, like many others, have been forced to hack the mainframe to get color. Check my hacks:

	#Author: Martin Grenfell [http://github.com/scrooloose]
	#License:
	#
	# This program is free software. It comes without any warranty, to
	# the extent permitted by applicable law. You can redistribute it
	# and/or modify it under the terms of the Do What The Fuck You Want
	# To Public License, Version 2, as published by Sam Hocevar. See
	# http://sam.zoy.org/wtfpl/COPYING for more details.
	#
	#This script hijacks calls to svn and adds color and pagination to
	#some svn commands. Source it from your bashrc.
	#
	#colordiff must be installed.
	#-------------------------------------------------------------------
	#intercept calls to svn
	svn () {
	#bail if the user didnt specify which subversion command to invoke
	if [ $# -lt 1 ]; then
	command svn
	return
	fi
	local sub_cmd=$1
	shift
	#intercept svn diff commands
	if [ $sub_cmd == diff ]; then
	#colorize the diff
	#remove stupid ^M dos line endings
	#page it if there's more one screen
	command svn diff "$@" | colordiff | sed -e 's/\r//g' | less -RF
	#add some color to svn status output and page if needed:
	#M = blue
	#A = green
	#D/!/~ = red
	#C = magenta
	#
	#note that C and M can be preceded by whitespace - see $svn help status
	elif [[ $sub_cmd =~ ^(status|st)$ ]]; then
	command svn status "$@" | sed -e 's/^\(\([A-Z]\s\+\(+\s\+\)\?\)\?C .*\)$/\o33\[1;35m\1\o33[0m/' \
	-e 's/^\(\s*M.*\)$/\o33\[1;34m\1\o33[0m/' \
	-e 's/^\(A.*\)$/\o33\[1;32m\1\o33[0m/' \
	-e 's/^\(\(D\|!\|~\).*\)$/\o33\[1;31m\1\o33[0m/' | less -RF
	#page some stuff I often end up paging manually
	elif [[ $sub_cmd =~ ^(blame|help|h|cat)$ ]]; then
	command svn $sub_cmd "$@" | less -F
	#colorize and page svn log
	#rearrange the date field from:
	# 2010-10-08 21:19:24 +1300 (Fri, 08 Oct 2010)
	#to:
	# 2010-10-08 21:19 (Fri, +1300)
	elif [[ $sub_cmd == log ]]; then
	command svn log "$@" | sed -e 's/^\(.*\)|\(.*\)| \(.*\) \(.*\):[0-9]\{2\} \(.*\) (\(...\).*) |\(.*\)$/\o33\[1;32m\1\o33[0m|\o33\[1;34m\2\o33[0m| \o33\[1;35m\3 \4 (\6, \5)\o33[0m |\7/' | less -RF
	#let svn handle it as normal
	else
	command svn $sub_cmd "$@"
	fi
	}
	# vi:sw=2:et:sts=2

view raw svnhacks.sh hosted with ❤ by GitHub

This script defines a function called "svn" that hijacks calls to the svn program and essentially rewrites some of the commands. For example, this command:

svn diff -r1:7 foo

would get rewritten to:

svn diff -r1:7 foo | colordiff | sed -e 's/\r//g' | less -RF

Another example:

svn log foo

would get rewritten to:

svn log foo | less -F

Notice that I'm still interacting with svn via the same command set, and am not training myself away from the existing commands. Hopefully this will prevent me from losing the plot and ripping off cocks when forced to use svn on a machine that doesn't have my hacks.