# zshrc/85_git_prompt # # Make git information available to the prompt # # Copyright © 1994–2008 martin f. krafft # Released under the terms of the Artistic Licence 2.0 # # Source repository: http://git.madduck.net/v/etc/zsh.git # # Shamelessly based on http://glandium.org/blog/?p=170 # __git_get_repo_root() { local relroot relroot="$(git rev-parse --show-cdup 2>/dev/null)" || return 1 if [ -n "$relroot" ]; then readlink -f "$relroot" else echo $PWD fi } __git_get_branch() { local ref ref=$(git symbolic-ref -q HEAD 2>/dev/null \ || git-name-rev --name-only HEAD 2>/dev/null) echo "${ref#refs/heads/}" } __get_root_offsets() { local pwda reporoot loc pwda=(${(s:/:)PWD}) reporoot=(${(s:/:)1}) echo $((1 - $#reporoot)) $(($#pwda - $#reporoot)) } __get_prompt_path_components() { local reporoot reporoot="$1" set -- $(__get_root_offsets "$reporoot") if [ "$2" -le 0 ]; then echo %~ else echo "%${1}~" "%${2}~" fi } __vcs_get_repo_type() { while true; do [ -d .git ] && echo git && break [ -d .bzr ] && echo bzr && break [ -d .hg ] && echo hg && break [ -d .svn ] && echo svn && break [ -d CVS ] && echo cvs && break [ "$PWD" = / ] && echo NONE && return 1 cd .. done } __vcs_set_prompt_variables() { local pre branch post local MAXLEN=25 local repotype="${1:-$(__vcs_get_repo_type)}" case "$repotype" in git) local reporoot="$(__git_get_repo_root)" set -- $(__get_prompt_path_components "$reporoot") branch="$(__git_get_branch)" post="${(%)2}" local prelen="$((MAXLEN - $#post - $#branch))" [ $prelen -lt 10 ] && prelen=10 pre="%${prelen}<..<${1}%<<" pre="${(%)pre}" ;; *) case "$repotype" in NONE) :;; *) warn "$repotype repositories not (yet) supported in the prompt";; esac local p="%${MAXLEN}<..<%~%<<" #TODO find a better way so we don't have to nuke $psvar, but since the # %(nv.true.false) check for prompts checks element count, not # content, that's all we get for now psvar=("${(%)p}") return esac psvar[1]="$pre" psvar[2]="$branch" psvar[3]="$post" } if ! is_root; then # too dangerous to be run as root _update_vcs_prompt_vars_if_vcs_ran() { local vcs="$(__vcs_get_repo_type)" case "$(history $(($HISTCMD - 1)))" in # $vcs appeared in last command, so be sure to update *${vcs}*) __vcs_set_prompt_variables esac } precmd_functions+=_update_vcs_prompt_vars_if_vcs_ran _update_vcs_prompt_vars() { __vcs_set_prompt_variables } chpwd_functions+=_update_vcs_prompt_vars # call it once _update_vcs_prompt_vars fi # vim:ft=zsh