e186363647e2dcf0ecd72efb3cd609dde6a672bf
1#!/bin/sh
2#
3# Copyright (c) 2005 Junio C Hamano.
4#
5
6. git-sh-setup-script || die "Not a git archive."
7
8usage="usage: $0 "'[-v] <upstream> [<head>]
9
10 __*__*__*__*__> <upstream>
11 /
12 fork-point
13 \__+__+__+__+__+__+__+__> <head>
14
15Each commit between the fork-point and <head> is examined, and
16compared against the change each commit between the fork-point and
17<upstream> introduces. If the change does not seem to be in the
18upstream, it is shown on the standard output.
19
20The output is intended to be used as:
21
22 OLD_HEAD=$(git-rev-parse HEAD)
23 git-rev-parse upstream >${GIT_DIR-.}/HEAD
24 git-cherry upstream $OLD_HEAD |
25 while read commit
26 do
27 GIT_EXTERNAL_DIFF=git-apply-patch-script git-diff-tree -p "$commit" &&
28 git-commit-script -C "$commit"
29 done
30'
31
32case "$1" in -v) verbose=t; shift ;; esac
33
34case "$#,$1" in
351,*..*)
36 upstream=$(expr "$1" : '\(.*\)\.\.') ours=$(expr "$1" : '.*\.\.\(.*\)$')
37 set x "$upstream" "$ours"
38 shift ;;
39esac
40
41case "$#" in
421) upstream=`git-rev-parse --verify "$1"` &&
43 ours=`git-rev-parse --verify HEAD` || exit
44 ;;
452) upstream=`git-rev-parse --verify "$1"` &&
46 ours=`git-rev-parse --verify "$2"` || exit
47 ;;
48*) echo >&2 "$usage"; exit 1 ;;
49esac
50
51# Note that these list commits in reverse order;
52# not that the order in inup matters...
53inup=`git-rev-list ^$ours $upstream` &&
54ours=`git-rev-list $ours ^$upstream` || exit
55
56tmp=.cherry-tmp$$
57patch=$tmp-patch
58mkdir $patch
59trap "rm -rf $tmp-*" 0 1 2 3 15
60
61_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
62_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
63
64for c in $inup
65do
66 git-diff-tree -p $c
67done | git-patch-id |
68while read id name
69do
70 echo $name >>$patch/$id
71done
72
73LF='
74'
75
76O=
77for c in $ours
78do
79 set x `git-diff-tree -p $c | git-patch-id`
80 if test "$2" != ""
81 then
82 if test -f "$patch/$2"
83 then
84 sign=-
85 else
86 sign=+
87 fi
88 case "$verbose" in
89 t)
90 c=$(git-rev-list --pretty=oneline --max-count=1 $c)
91 esac
92 case "$O" in
93 '') O="$sign $c" ;;
94 *) O="$sign $c$LF$O" ;;
95 esac
96 fi
97done
98case "$O" in
99'') ;;
100*) echo "$O" ;;
101esac