git-diff-script

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2005 Linus Torvalds
   4 # Copyright (c) 2005 Junio C Hamano
   5
   6 rev=$(git-rev-parse --revs-only --no-flags --sq "$@") || exit
   7 flags=$(git-rev-parse --no-revs --flags --sq "$@")
   8 files=$(git-rev-parse --no-revs --no-flags --sq "$@")
   9
  10 : ${flags:="'-M' '-p'"}
  11
  12 case "$rev" in
  13 ?*' '?*' '?*)
  14         die "I don't understand"
  15         ;;
  16 ?*' '^?*)
  17         begin=$(expr "$rev" : '.*^.\([0-9a-f]*\).*') &&
  18         end=$(expr "$rev" : '.\([0-9a-f]*\). .*') || exit
  19         cmd="git-diff-tree $flags $begin $end $files"
  20         ;;
  21 ?*' '?*)
  22         cmd="git-diff-tree $flags $rev $files"
  23         ;;
  24 ?*' ')
  25         cmd="git-diff-cache $flags $rev $files"
  26         ;;
  27 '')
  28         cmd="git-diff-files $flags $files"
  29         ;;
  30 *)
  31         die "I don't understand $*"
  32         ;;
  33 esac
  34
  35 eval "$cmd"