bash_profile_ps1.sh

_vcs_info() {
    # parse git branch
    git name-rev HEAD 2> /dev/null | sed 's#HEAD\ \(.*\)#git:\1)#' | grep git && return
    # parse svn branch
    # http://svn.host/xxx
    REPO_ROOT=`svn info 2>/dev/null | sed -ne 's#^Repository Root: ##p'`
    [ -z "$REPO_ROOT" ] && return
    # http://svn.host/xxx                                  -> 空串
    # http://svn.host/xxx/trunk                            -> /trunk
    # http://svn.host/xxx/branches/yyy/zzz                 -> /branches/yyy/zzz
    # http://svn.host/xxx/tags/yyy/zzz                     -> /xxx/tags/yyy/zzz
    WORK_PATH=`svn info 2>/dev/null | sed -ne 's#^URL: ##p' | sed -e 's#^'"$REPO_ROOT"'##g'`
    if [ -z "$WORK_PATH" ] ; then
        BRANCH=/
    elif echo "$WORK_PATH" | grep -q /trunk ; then
        BRANCH=`echo "$WORK_PATH" | egrep -o '/trunk([^/]*)' | sed -ne 's#/##p'`
    elif echo "$WORK_PATH" | grep -q /branches/ ; then
        BRANCH=`echo "$WORK_PATH" | egrep -o '/branches/([^/]*)' | sed -ne 's#^/branches/##p'`
    elif echo "$WORK_PATH" | grep -q /tags/ ; then
        BRANCH=`echo "$WORK_PATH" | egrep -o '/tags/([^/]*)' | sed -ne 's#^/tags/##p'`
    else
        BRANCH=`echo "$WORK_PATH" | awk -F"/" '{print $1?$1:$2}'`
    fi
    echo "$BRANCH" | awk '{print "svn:"$1")" }'
}

# Rainbow style prompt (first line)  - user@host path ]
PS1=""
PS1="$PS1\[$(tput bold)\]"
PS1="$PS1\[$(tput setaf 3)\]\u"
PS1="$PS1\[$(tput setaf 2)\]@"
PS1="$PS1\[$(tput setaf 4)\]\h"
PS1="$PS1\[$(tput setaf 5)\] \w"
PS1="$PS1\[$(tput setaf 1)\] ]"
#                      (second line) - $ _
#                                    - svn:trunk)$ _
#                                    - git:master)$ _
PS1="$PS1\n"
PS1="$PS1\[$(tput bold)\]\[$(tput setaf 3)\]↪ " #
PS1="$PS1\[$(tput sgr0)\]\[$(tput setaf 2)\]\$(_vcs_info)"
PS1="$PS1\[$(tput bold)\]\[$(tput setaf 7)\]\$"
PS1="$PS1\[$(tput sgr0)\] "
export PS1
export -f _vcs_info