Andrew's git - gitweb.git/blob

   1#!/bin/sh
   2#
   3# Copyright (c) 2005 Linus Torvalds
   4# Copyright (c) 2005 Junio C Hamano
   5
   6rev=$(git-rev-parse --revs-only --no-flags --sq "$@") || exit
   7flags=$(git-rev-parse --no-revs --flags --sq "$@")
   8files=$(git-rev-parse --no-revs --no-flags --sq "$@")
   9
  10# I often say 'git diff --cached -p' and get scolded by git-diff-files, but
  11# obviously I mean 'git diff --cached -p HEAD' in that case.
  12case "$rev" in
  13'')
  14        case " $flags " in
  15        *" '--cached' "*)
  16                rev='HEAD '
  17                ;;
  18        esac
  19esac
  20
  21# If we do not have --name-status, --name-only nor -r, default to -p.
  22# If we do not have -B nor -C, default to -M.
  23case " $flags " in
  24*" '--name-status' "* | *" '--name-only' "* | *" '-r' "* )
  25        ;;
  26*)
  27        flags="$flags'-p' " ;;
  28esac
  29case " $flags " in
  30*" '-"[BCM]* | *" '--find-copies-harder' "*)
  31        ;; # something like -M50.
  32*)
  33        flags="$flags'-M' " ;;
  34esac
  35
  36case "$rev" in
  37?*' '?*' '?*)
  38        echo >&2 "I don't understand"
  39        exit 1
  40        ;;
  41?*' '^?*)
  42        begin=$(expr "$rev" : '.*^.\([0-9a-f]*\).*') &&
  43        end=$(expr "$rev" : '.\([0-9a-f]*\). .*') || exit
  44        cmd="git-diff-tree $flags $begin $end -- $files"
  45        ;;
  46?*' '?*)
  47        cmd="git-diff-tree $flags $rev -- $files"
  48        ;;
  49?*' ')
  50        cmd="git-diff-index $flags $rev -- $files"
  51        ;;
  52'')
  53        cmd="git-diff-files $flags -- $files"
  54        ;;
  55*)
  56        die "I don't understand $*"
  57        ;;
  58esac
  59
  60eval "$cmd"