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@yannlugrin
Forked from woods/git_svn_bash_prompt.sh
Created April 2, 2009 14:24
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#!/bin/bash
#
# Set our bash prompt according to the branch/status of the current git
# repository.
#
# Forked from http://gist.github.com/31967
RED="\[\033[0;31m\]"
YELLOW="\[\033[0;33m\]"
GREEN="\[\033[0;32m\]"
BLUE="\[\033[0;34m\]"
LIGHT_RED="\[\033[1;31m\]"
LIGHT_GREEN="\[\033[1;32m\]"
WHITE="\[\033[1;37m\]"
LIGHT_GRAY="\[\033[0;37m\]"
COLOR_NONE="\[\e[0m\]"
function is_git_repository()
{
git branch > /dev/null 2>&1
}
function parse_git_branch()
{
# Only display git info if we're inside a git repository.
is_git_repository || return 1
# Capture the output of the "git status" command.
git_status="$(git status 2> /dev/null)"
# Set color based on clean/staged/dirty.
if [[ ${git_status} =~ "working directory clean" ]]; then
state_color="${GREEN}"
elif [[ ${git_status} =~ "Changes to be committed" ]]; then
state_color="${YELLOW}"
state_icon="⚡"
else
state_color="${RED}"
state_icon="⚡"
fi
# Set arrow icon based on status against remote.
remote_pattern="# Your branch is (.*) of"
if [[ ${git_status} =~ ${remote_pattern} ]]; then
if [[ ${BASH_REMATCH[1]} == "ahead" ]]; then
remote="↑"
else
remote="↓"
fi
fi
diverge_pattern="# Your branch and (.*) have diverged"
if [[ ${git_status} =~ ${diverge_pattern} ]]; then
remote="↕"
fi
# Get the name of the branch.
branch_pattern="^# On branch ([^${IFS}]*)"
if [[ ${git_status} =~ ${branch_pattern} ]]; then
branch=${BASH_REMATCH[1]}
fi
# Display the prompt.
echo "${state_color}(${branch})${state_icon}${remote}${COLOR_NONE} "
}
function prompt_symbol()
{
# Set color of dollar prompt based on return value of previous command.
if test $1 -eq 0
then
echo "\$"
else
echo "${RED}\$${COLOR_NONE}"
fi
}
function prompt_func()
{
last_return_value=$?
PS1="\u@\h \w $(parse_git_branch)$(prompt_symbol $last_return_value) "
}
PROMPT_COMMAND=prompt_func
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