vcs info on PS1

ps1.sh

vcs() {
    if [[ -d ".svn" ]] ; then
        __svn_branch 2> /dev/null | \
            awk '{ printf "svn:" $1 }'
    elif [[ -d ".hg" ]] ; then
        hg branch 2> /dev/null | \
            awk '{ printf " hg:on " $1 }'
        hg bookmarks 2> /dev/null | \
            awk '/\*/ { printf " hg:at " $2 }'
    elif [[ -d .git ]] ; then
        git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/git:on\ \1 /'
    fi
}

# Outputs the current trunk, branch, or tag
__svn_branch() {
    local url=
    if [[ -d .svn ]]; then
        url=`svn info | awk '/URL:/ {print $2}'`
        if [[ $url =~ trunk ]]; then
            echo trunk
        elif [[ $url =~ /branches/ ]]; then
            echo $url | sed -e 's#^.*/\(branches/.*/.*\)$#\1#'
        elif [[ $url =~ /tags/ ]]; then
            echo $url | sed -e 's#^.*/\(tags/.*\)/.*$#\1#'
        fi
    fi
}

# Outputs the current revision
__svn_rev() {
    local r=$(svn info | awk '/Revision:/ {print $2}')

    if [ ! -z $SVN_SHOWDIRTYSTATE ]; then
        local svnst flag
        svnst=$(svn status | grep '^\s*[?ACDMR?!]')
        [ -z "$svnst" ] && flag=*
        r=$r$flag
    fi
    echo $r
}

if [ "$color_prompt" = yes ]; then
    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\] $(vcs)\n\$'
else
    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
fi