contrib/stg-gitk

   1 #!/bin/sh
   2 set -e
   3
   4 # stg-gitk - helper script to graphically display an StGit stack
   5
   6 # Displays given branches and stacks, without getting disturbed by
   7 # patch logs.
   8
   9 # LIMITATIONS:
  10 # - no support for spaces in branch names
  11
  12 # Copyright (c) 2007 Yann Dirson <ydirson@altern.org>
  13 # Subject to the GNU GPL, version 2.
  14
  15 helptext="Usage: $(basename "$0") [--refs] [<branches>|--all] [-- <gitk args>]"
  16
  17 usage()
  18 {
  19     echo >&2 "$helptext"
  20     exit 1
  21 }
  22
  23 allbranches=0
  24 refsonly=0
  25 branches=''
  26 while [ "$#" -gt 0 ]; do
  27     case "$1" in
  28         --refs) refsonly=1 ;;
  29         --all) allbranches=1 ;;
  30         --help) echo "$helptext"; exit 0 ;;
  31         --) shift; break ;;
  32         --*) usage ;;
  33         *) branches="$branches $1" ;;
  34     esac
  35     shift
  36 done
  37 # Now any remaining stuff in $@ are additional options for gitk
  38
  39 if [ $allbranches = 1 ] && [ "$branches" != "" ]; then
  40     usage
  41 fi
  42
  43 GIT_DIR=$(git rev-parse --git-dir)
  44 GIT_DIR_SKIPLEN=$(printf "%s/X" "$GIT_DIR" | wc -c)
  45
  46 refdirs=''
  47 if [ $allbranches = 1 ]; then
  48     refdirs="$GIT_DIR/refs"
  49 else
  50     # default to current branch
  51     if [ "$branches" = "" ]; then
  52         branches="$(stg branch)"
  53     fi
  54     if [ "$branches" = "" ]; then
  55         echo >&2 "ERROR: cannot find current branch."
  56         exit 1
  57     fi
  58
  59     # expand patches for each named branch
  60     for b in $branches; do
  61         if [ -e "$GIT_DIR/refs/patches/$b" ]; then
  62             # StGit branch: show all patches
  63             refdirs="$refdirs $GIT_DIR/refs/heads/$b $GIT_DIR/refs/patches/$b"
  64         elif [ -e "$GIT_DIR/refs/heads/$b" ]; then
  65             # other Git branch
  66             refdirs="$refdirs $GIT_DIR/refs/heads/$b"
  67         elif [ "$(git for-each-ref "refs/$b" | wc -l)" != 0 ]; then
  68             # other ref
  69             refdirs="$refdirs $(git for-each-ref --format="$GIT_DIR/%(refname)" "refs/$b")"
  70         else
  71             echo >&2 "ERROR: no such ref '$b'"
  72             usage
  73         fi
  74     done
  75 fi
  76
  77 printrefs()
  78 {
  79     # shellcheck disable=SC2086
  80     find $refdirs -type f -not -name '*.log' | cut -c"${GIT_DIR_SKIPLEN}"-
  81 }
  82
  83 if [ $refsonly = 1 ]; then
  84     printrefs
  85 elif grep -q -- --argscmd "$(command -v gitk)"; then
  86     # This gitk supports --argscmd.
  87     # Let's use a hack to pass --all, which was consumed during command-line parsing
  88     if [ $allbranches = 1 ]; then
  89         gitk --argscmd="$0 --refs --all" "$@"
  90     else
  91         gitk --argscmd="$0 --refs $branches" "$@"
  92     fi
  93 else
  94     # This gitk does not support --argscmd, just compute refs onces
  95     # shellcheck disable=SC2046
  96     gitk $(printrefs) "$@"
  97 fi