bash profile (git tips for bash)

.bash_profile

# If not running interactively, don't do anything
[ -z "$PS1" ] && return

# add local bin path
PATH=$HOME/.bin:$PATH
PATH=/usr/local/bin:$PATH
PATH=/usr/local/sbin:$PATH
PATH=/usr/local/mysql/bin:$PATH

# don't put duplicate lines in the history
export HISTCONTROL=ignoreboth,erasedups
# set history length
HISTFILESIZE=1000000000
HISTSIZE=1000000

# append to the history file, don't overwrite it
shopt -s histappend
# check the window size after each command and, if necessary, update the values of LINES and COLUMNS.
shopt -s checkwinsize
# correct minor errors in the spelling of a directory component in a cd command
shopt -s cdspell
# save all lines of a multiple-line command in the same history entry (allows easy re-editing of multi-line commands)
shopt -s cmdhist

# setup color variables
color_is_on=
color_red=
color_green=
color_yellow=
color_blue=
color_white=
color_gray=
color_bg_red=
color_off=
if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
color_is_on=true
color_red="\[$(/usr/bin/tput setaf 1)\]"
color_green="\[$(/usr/bin/tput setaf 2)\]"
color_yellow="\[$(/usr/bin/tput setaf 3)\]"
color_blue="\[$(/usr/bin/tput setaf 6)\]"
color_white="\[$(/usr/bin/tput setaf 7)\]"
color_gray="\[$(/usr/bin/tput setaf 8)\]"
color_off="\[$(/usr/bin/tput sgr0)\]"
color_error="$(/usr/bin/tput setab 1)$(/usr/bin/tput setaf 7)"
color_error_off="$(/usr/bin/tput sgr0)"
fi

# get git status
function parse_git_status {
# clear git variables
GIT_BRANCH=
GIT_DIRTY=

# exit if no git found in system
local GIT_BIN=$(which git 2>/dev/null)
[[ -z $GIT_BIN ]] && return

# check we are in git repo
local CUR_DIR=$PWD
while [ ! -d ${CUR_DIR}/.git ] && [ ! $CUR_DIR = "/" ]; do CUR_DIR=${CUR_DIR%/*}; done
[[ ! -d ${CUR_DIR}/.git ]] && return

# 'git repo for dotfiles' fix: show git status only in home dir and other git repos
[[ $CUR_DIR == $HOME ]] && [[ $PWD != $HOME ]] && return

# get git branch
GIT_BRANCH=$($GIT_BIN symbolic-ref HEAD 2>/dev/null)
[[ -z $GIT_BRANCH ]] && return
GIT_BRANCH=${GIT_BRANCH#refs/heads/}

# get git status
local GIT_STATUS=$($GIT_BIN status --porcelain 2>/dev/null)
[[ -n $GIT_STATUS ]] && GIT_DIRTY=1
}

function prompt_command {
local PS1_GIT=
local PS1_VENV=
local PWDNAME=$PWD

# beautify working firectory name
if [ $HOME == $PWD ]; then
PWDNAME="~"
elif [ $HOME == ${PWD:0:${#HOME}} ]; then
PWDNAME="~${PWD:${#HOME}}"
fi

# parse git status and get git variables
parse_git_status

# build b/w prompt for git and vertial env
[[ ! -z $GIT_BRANCH ]] && PS1_GIT=" (git: ${GIT_BRANCH})"
[[ ! -z $VIRTUAL_ENV ]] && PS1_VENV=" (venv: ${VIRTUAL_ENV#$WORKON_HOME})"

# calculate fillsize
local fillsize=$(($COLUMNS-$(printf "${USER}@${HOSTNAME}:${PWDNAME}${PS1_GIT}${PS1_VENV} " | wc -c | tr -d " ")))

local FILL=$color_gray
while [ $fillsize -gt 0 ]; do FILL="${FILL}─"; fillsize=$(($fillsize-1)); done
FILL="${FILL}${color_off}"

local color_user=
if $color_is_on; then
# set user color
case `id -u` in
0) color_user=$color_red ;;
*) color_user=$color_green ;;
esac

# build git status for prompt
if [ ! -z $GIT_BRANCH ]; then
if [ -z $GIT_DIRTY ]; then
PS1_GIT=" (git: ${color_green}${GIT_BRANCH}${color_off})"
else
PS1_GIT=" (git: ${color_red}${GIT_BRANCH}${color_off})"
fi
fi

# build python venv status for prompt
[[ ! -z $VIRTUAL_ENV ]] && PS1_VENV=" (venv: ${color_blue}${VIRTUAL_ENV#$WORKON_HOME}${color_off})"
fi

# set new color prompt
PS1="${color_user}${USER}${color_off}@${color_yellow}${HOSTNAME}${color_off}:${color_white}${PWDNAME}${color_off}${PS1_GIT}${PS1_VENV} ${FILL}\n➜ "

# get cursor position and add new line if we're not in first column
# cool'n'dirty trick (http://stackoverflow.com/a/2575525/1164595)
# XXX FIXME: this hack broke ssh =(
# exec < /dev/tty
# local OLDSTTY=$(stty -g)
# stty raw -echo min 0
# echo -en "\033[6n" > /dev/tty && read -sdR CURPOS
# stty $OLDSTTY
echo -en "\033[6n" && read -sdR CURPOS
[[ ${CURPOS##*;} -gt 1 ]] && echo "${color_error}↵${color_error_off}"

# set title
echo -ne "\033]0;${USER}@${HOSTNAME}:${PWDNAME}"; echo -ne "\007"
}

# set prompt command (title update and color prompt)
PROMPT_COMMAND=prompt_command
# set new b/w prompt (will be overwritten in 'prompt_command' later for color prompt)
PS1='\u@\h:\w\$ '

# python virtualenv
if [ -f /usr/local/bin/virtualenvwrapper.sh ]; then
export PROJECT_HOME=~/work/
export WORKON_HOME=~/work/.venv/
export VIRTUAL_ENV_DISABLE_PROMPT=1
source /usr/local/bin/virtualenvwrapper.sh
fi

# grep colorize
export GREP_OPTIONS="--color=auto"

# bash completion
if [ -f `brew --prefix`/etc/bash_completion ]; then
. `brew --prefix`/etc/bash_completion
fi

# bash aliases
if [ -f ~/.bash_aliases ]; then
. ~/.bash_aliases
fi

# this is for delete words by ^W
tty -s && stty werase ^- 2>/dev/null

source ~/.git-completion.bash