git-cherry.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2005 Junio C Hamano.
   4 #
   5
   6 . git-sh-setup
   7
   8 usage="usage: $0 "'[-v] <upstream> [<head>]
   9
  10              __*__*__*__*__> <upstream>
  11             /
  12   fork-point
  13             \__+__+__+__+__+__+__+__> <head>
  14
  15 Each commit between the fork-point and <head> is examined, and
  16 compared against the change each commit between the fork-point and
  17 <upstream> introduces.  If the change seems to be in the upstream,
  18 it is shown on the standard output with prefix "+".  Otherwise
  19 it is shown with prefix "-".
  20 '
  21
  22 case "$1" in -v) verbose=t; shift ;; esac
  23
  24 case "$#,$1" in
  25 1,*..*)
  26     upstream=$(expr "$1" : '\(.*\)\.\.') ours=$(expr "$1" : '.*\.\.\(.*\)$')
  27     set x "$upstream" "$ours"
  28     shift ;;
  29 esac
  30
  31 case "$#" in
  32 1) upstream=`git-rev-parse --verify "$1"` &&
  33    ours=`git-rev-parse --verify HEAD` || exit
  34    ;;
  35 2) upstream=`git-rev-parse --verify "$1"` &&
  36    ours=`git-rev-parse --verify "$2"` || exit
  37    ;;
  38 *) echo >&2 "$usage"; exit 1 ;;
  39 esac
  40
  41 # Note that these list commits in reverse order;
  42 # not that the order in inup matters...
  43 inup=`git-rev-list ^$ours $upstream` &&
  44 ours=`git-rev-list $ours ^$upstream` || exit
  45
  46 tmp=.cherry-tmp$$
  47 patch=$tmp-patch
  48 mkdir $patch
  49 trap "rm -rf $tmp-*" 0 1 2 3 15
  50
  51 _x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
  52 _x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
  53
  54 for c in $inup
  55 do
  56         git-diff-tree -p $c
  57 done | git-patch-id |
  58 while read id name
  59 do
  60         echo $name >>$patch/$id
  61 done
  62
  63 LF='
  64 '
  65
  66 O=
  67 for c in $ours
  68 do
  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$O" ;;
  85                 esac
  86         fi
  87 done
  88 case "$O" in
  89 '') ;;
  90 *)  echo "$O" ;;
  91 esac