enable vcsprompt to use %-sequences and make vcsh prompt stand out

[etc/zsh.git] / .zsh / zshrc / 60_vcsprompt

diff --git a/.zsh/zshrc/60_vcsprompt b/.zsh/zshrc/60_vcsprompt
index 744f649009a3db5a2f38d05f61e0eadb0cb26ff9..cf901101a0c070adfccd5fd26695b7275c304765 100644 (file)
--- a/.zsh/zshrc/60_vcsprompt
+++ b/.zsh/zshrc/60_vcsprompt
@@ -5,7 +5,7 @@
 # Copyright © 1994–2008 martin f. krafft <madduck@madduck.net>
 # Released under the terms of the Artistic Licence 2.0
 #
-# Source repository: http://git.madduck.net/v/etc/zsh.git
+# Source repository: git://git.madduck.net/etc/zsh.git
 #
 # Shamelessly based on http://glandium.org/blog/?p=170
 #
@@ -26,12 +26,30 @@ __git_get_reporoot()
 __git_get_branch()
 {
   # return the name of the git branch we're on
-  local ref
-  ref=$(git symbolic-ref -q HEAD 2>/dev/null \
-     || git-name-rev --name-only HEAD 2>/dev/null) || return 1
+  local ref gitdir
+  gitdir="$(git rev-parse --git-dir)"
+  ref=$(git --git-dir="$gitdir" symbolic-ref -q HEAD 2>/dev/null \
+     || git --git-dir="$gitdir" name-rev --name-only HEAD 2>/dev/null) || return 1
   echo "${ref#refs/heads/}"
 }
 
+__git_print_preprompt()
+{
+  [ "$(git config --get core.bare)" = false ] || return
+
+  local output
+  output=(${(f):-"$(git diff --stat --relative 2>/dev/null)"})
+  if [[ ${#output} -gt 1 ]]; then
+    echo changes on filesystem:
+    print "${${(F)output[1,-2]}//\.\.\./…}"
+  fi
+  output=(${(f):-"$(git diff --cached --stat --relative 2>/dev/null)"})
+  if [[ ${#output} -gt 1 ]]; then
+    echo cached/staged changes:
+    print "${${(F)output[1,-2]}//\.\.\./…}"
+  fi
+}
+
 __hg_get_reporoot()
 {
   hg root
@@ -70,6 +88,7 @@ __vcs_get_repo_type()
   local dir
   while true; do
     [ -d ${dir}.git ] && echo git && break
+    [ -d "$GIT_DIR" ] && echo git && break
     [ -d ${dir}.bzr ] && echo bzr && break
     [ -d ${dir}.hg ] && echo hg && break
     [ "$(readlink -f ${dir:-.})" = / ] && echo NONE && break
@@ -84,7 +103,7 @@ __vcs_get_prompt_path_components()
 
   # shortcut: if there are no arguments, return a default prompt
   if [ -z "${1:-}" ]; then
-    pwdnamed="${(%):-%${_PROMPT_PATH_MAXLEN}<..<%~%<<}"
+    pwdnamed="${(%):-%${_PROMPT_PATH_MAXLEN}<…<%~%<<}"
     echo "$pwdnamed"
     return
   fi
@@ -122,7 +141,7 @@ __vcs_get_prompt_path_components()
   prelen=$((${_PROMPT_PATH_MAXLEN:-25} - $#branch - $#postfix))
   minlen=${_PROMPT_PATH_MINLEN:-10}
   (( $prelen < $minlen )) && prelen=$minlen
-  prefix="${(%):-%${prelen}<..<%-${precomps}~%<<}"
+  prefix="${(%):-%${prelen}<…<%-${precomps}~%<<}"
 
   echo "'$prefix'" "'$branch'" "'$postfix'"
 }
@@ -139,10 +158,20 @@ __vcs_set_prompt_variables()
         { error "could not determine git repository root"; return 1 }
       branch="$(__git_get_branch)" ||
         { error "could not determine git branch"; return 1 }
-      eval set -- $(__vcs_get_prompt_path_components "$reporoot" "$branch")
-      # poor man's replace until I find out how to do named dirs properly
-      # here:
-      [ -d "$GIT_DIR" ] && set -- "${GIT_DIR/$HOME/~}" "$2" "$1"
+      if [ -n "$VCSH_REPO_NAME" ]; then
+        # if vcsh is used to get a subshell, then the repo root is the home
+        # directory, but we want to indicate the vcsh context too:
+        eval set -- $(__vcs_get_prompt_path_components "$HOME" "$branch")
+        set -- "%Svcsh:$VCSH_REPO_NAME%s" "$2" "$3"
+      else
+        eval set -- $(__vcs_get_prompt_path_components "$reporoot" "$branch")
+        if [ -d "$GIT_DIR" ]; then
+          # poor man's replace until I find out how to do named dirs properly
+          # here:
+          local _D="${GIT_DIR/$HOME/~}"
+          set -- "$_D" "$2" "${${1#$_D}%/}"
+        fi
+      fi
       ;;
     hg)
       reporoot="$(__hg_get_reporoot)" ||
@@ -163,7 +192,7 @@ __vcs_set_prompt_variables()
         NONE) :;;
         *) warn "$repotype repositories not (yet) supported in the prompt";;
       esac
-      local p="%${MAXLEN}<..<%~%<<"
+      local p="%${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
@@ -171,7 +200,19 @@ __vcs_set_prompt_variables()
       return
   esac
 
-  psvar[1,3]=($1 $2 $3)
+  psvar[1,3]=(${(%)1} ${(%)2} ${(%)3})
+}
+
+__vcs_print_preprompt()
+{
+  local reporoot
+  repotype="${1:-$(__vcs_get_repo_type)}"
+
+  case "$repotype" in
+    git)
+      __git_print_preprompt
+      ;;
+  esac
 }
 
 if ! is_root; then
@@ -191,6 +232,11 @@ if ! is_root; then
   }
   chpwd_functions+=_update_vcs_prompt_vars
 
+  _print_preprompt() {
+    [[ $? -eq 0 ]] && __vcs_print_preprompt
+  }
+  precmd_functions+=_print_preprompt
+
   # call it once
   _update_vcs_prompt_vars
 fi