Andrew's git - gitweb.git/blob

   1#!/bin/sh
   2#
   3# Copyright (c) 2005 Junio C Hamano.
   4#
   5
   6USAGE='[-v] <upstream> [<head>] [<limit>]'
   7LONG_USAGE='             __*__*__*__*__> <upstream>
   8            /
   9  fork-point
  10            \__+__+__+__+__+__+__+__> <head>
  11
  12Each commit between the fork-point (or <limit> if given) and <head> is
  13examined, and compared against the change each commit between the
  14fork-point and <upstream> introduces.  If the change seems to be in
  15the upstream, it is shown on the standard output with prefix "+".
  16Otherwise it is shown with prefix "-".'
  17. git-sh-setup
  18
  19case "$1" in -v) verbose=t; shift ;; esac 
  20
  21case "$#,$1" in
  221,*..*)
  23    upstream=$(expr "z$1" : 'z\(.*\)\.\.') ours=$(expr "z$1" : '.*\.\.\(.*\)$')
  24    set x "$upstream" "$ours"
  25    shift ;;
  26esac
  27
  28case "$#" in
  291) upstream=`git-rev-parse --verify "$1"` &&
  30   ours=`git-rev-parse --verify HEAD` || exit
  31   limit="$upstream"
  32   ;;
  332) upstream=`git-rev-parse --verify "$1"` &&
  34   ours=`git-rev-parse --verify "$2"` || exit
  35   limit="$upstream"
  36   ;;
  373) upstream=`git-rev-parse --verify "$1"` &&
  38   ours=`git-rev-parse --verify "$2"` &&
  39   limit=`git-rev-parse --verify "$3"` || exit
  40   ;;
  41*) usage ;;
  42esac
  43
  44# Note that these list commits in reverse order;
  45# not that the order in inup matters...
  46inup=`git-rev-list ^$ours $upstream` &&
  47ours=`git-rev-list $ours ^$limit` || exit
  48
  49tmp=.cherry-tmp$$
  50patch=$tmp-patch
  51mkdir $patch
  52trap "rm -rf $tmp-*" 0 1 2 3 15
  53
  54for c in $inup
  55do
  56        git-diff-tree -p $c
  57done | git-patch-id |
  58while read id name
  59do
  60        echo $name >>$patch/$id
  61done
  62
  63LF='
  64'
  65
  66O=
  67for c in $ours
  68do
  69        set x `git-diff-tree -p $c | git-patch-id`
  70        if test "$2" != ""
  71        then
  72                if test -f "$patch/$2"
  73                then
  74                        sign=-
  75                else
  76                        sign=+
  77                fi
  78                case "$verbose" in
  79                t)
  80                        c=$(git-rev-list --pretty=oneline --max-count=1 $c)
  81                esac
  82                case "$O" in
  83                '')     O="$sign $c" ;;
  84                *)      O="$sign $c$LF$O" ;;
  85                esac
  86        fi
  87done
  88case "$O" in
  89'') ;;
  90*)  echo "$O" ;;
  91esac