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
  10die () {
  11    echo >&2 "$*"
  12    exit 1
  13}
  14
  15# I often say 'git diff --cached -p' and get scolded by git-diff-files, but
  16# obviously I mean 'git diff --cached -p HEAD' in that case.
  17case "$rev" in
  18'')
  19        case " $flags " in
  20        *" '--cached' "*)
  21                rev='HEAD '
  22                ;;
  23        esac
  24esac
  25
  26# If we do not have --name-status, --name-only nor -r, default to -p.
  27# If we do not have -B nor -C, default to -M.
  28case " $flags " in
  29*" '--name-status' "* | *" '--name-only' "* | *" '-r' "* )
  30        ;;
  31*)
  32        flags="$flags'-p' " ;;
  33esac
  34case " $flags " in
  35*" '-"[BCM]* | *" '--find-copies-harder' "*)
  36        ;; # something like -M50.
  37*)
  38        flags="$flags'-M' " ;;
  39esac
  40
  41case "$rev" in
  42?*' '?*' '?*)
  43        echo >&2 "I don't understand"
  44        exit 1
  45        ;;
  46?*' '^?*)
  47        begin=$(expr "$rev" : '.*^.\([0-9a-f]*\).*') &&
  48        end=$(expr "$rev" : '.\([0-9a-f]*\). .*') || exit
  49        cmd="git-diff-tree $flags $begin $end -- $files"
  50        ;;
  51?*' '?*)
  52        cmd="git-diff-tree $flags $rev -- $files"
  53        ;;
  54?*' ')
  55        cmd="git-diff-index $flags $rev -- $files"
  56        ;;
  57'')
  58        cmd="git-diff-files $flags -- $files"
  59        ;;
  60*)
  61        die "I don't understand $*"
  62        ;;
  63esac
  64
  65eval "$cmd"