git-request-pull.sh

   1 #!/bin/sh
   2 # Copyright 2005, Ryan Anderson <ryan@michonline.com>
   3 #
   4 # This file is licensed under the GPL v2, or a later version
   5 # at the discretion of Linus Torvalds.
   6
   7 USAGE='<start> <url> [<end>]'
   8 LONG_USAGE='Summarizes the changes between two commits to the standard output,
   9 and includes the given URL in the generated summary.'
  10 SUBDIRECTORY_OK='Yes'
  11 OPTIONS_KEEPDASHDASH=
  12 OPTIONS_SPEC='git request-pull [options] start url [end]
  13 --
  14 p    show patch text as well
  15 '
  16
  17 . git-sh-setup
  18
  19 GIT_PAGER=
  20 export GIT_PAGER
  21
  22 patch=
  23 while   case "$#" in 0) break ;; esac
  24 do
  25         case "$1" in
  26         -p)
  27                 patch=-p ;;
  28         --)
  29                 shift; break ;;
  30         -*)
  31                 usage ;;
  32         *)
  33                 break ;;
  34         esac
  35         shift
  36 done
  37
  38 base=$1 url=$2 head=${3-HEAD} status=0 branch_name=
  39
  40 headref=$(git symbolic-ref -q "$head")
  41 if git show-ref -q --verify "$headref"
  42 then
  43         branch_name=${headref#refs/heads/}
  44         if test "z$branch_name" = "z$headref" ||
  45                 ! git config "branch.$branch_name.description" >/dev/null
  46         then
  47                 branch_name=
  48         fi
  49 fi
  50
  51 tag_name=$(git describe --exact "$head^0" 2>/dev/null)
  52
  53 test -n "$base" && test -n "$url" || usage
  54 baserev=$(git rev-parse --verify "$base"^0) &&
  55 headrev=$(git rev-parse --verify "$head"^0) || exit
  56
  57 merge_base=$(git merge-base $baserev $headrev) ||
  58 die "fatal: No commits in common between $base and $head"
  59
  60 # $head is the token given from the command line. If a ref with that
  61 # name exists at the remote and their values match, we should use it.
  62 # Otherwise find a ref that matches $headrev.
  63 find_matching_ref='
  64         sub abbr {
  65                 my $ref = shift;
  66                 if ($ref =~ s|^refs/heads/|| || $ref =~ s|^refs/tags/|tags/|) {
  67                         return $ref;
  68                 } else {
  69                         return $ref;
  70                 }
  71         }
  72
  73         my ($exact, $found);
  74         while (<STDIN>) {
  75                 my ($sha1, $ref, $deref) = /^(\S+)\s+(\S+?)(\^\{\})?$/;
  76                 next unless ($sha1 eq $ARGV[1]);
  77                 $found = abbr($ref);
  78                 if ($ref =~ m|/\Q$ARGV[0]\E$|) {
  79                         $exact = $found;
  80                         last;
  81                 }
  82         }
  83         if ($exact) {
  84                 print "$exact\n";
  85         } elsif ($found) {
  86                 print "$found\n";
  87         }
  88 '
  89
  90 ref=$(git ls-remote "$url" | perl -e "$find_matching_ref" "$head" "$headrev")
  91
  92 url=$(git ls-remote --get-url "$url")
  93
  94 git show -s --format='The following changes since commit %H:
  95
  96   %s (%ci)
  97
  98 are available in the git repository at:
  99 ' $merge_base &&
 100 echo "  $url${ref+ $ref}" &&
 101 git show -s --format='
 102 for you to fetch changes up to %H:
 103
 104   %s (%ci)
 105
 106 ----------------------------------------------------------------' $headrev &&
 107
 108 if test -n "$branch_name"
 109 then
 110         echo "(from the branch description for $branch_name local branch)"
 111         echo
 112         git config "branch.$branch_name.description"
 113 fi &&
 114
 115 if test -n "$tag_name"
 116 then
 117         git cat-file tag "$tag_name" |
 118         sed -n -e '1,/^$/d' -e '/^-----BEGIN PGP /q' -e p
 119         echo
 120 fi &&
 121
 122 if test -n "$branch_name" || test -n "$tag_name"
 123 then
 124         echo "----------------------------------------------------------------"
 125 fi &&
 126
 127 git shortlog ^$baserev $headrev &&
 128 git diff -M --stat --summary $patch $merge_base..$headrev || status=1
 129
 130 if test -z "$ref"
 131 then
 132         echo "warn: No branch of $url is at:" >&2
 133         git show -s --format='warn:   %h: %s' $headrev >&2
 134         echo "warn: Are you sure you pushed '$head' there?" >&2
 135         status=1
 136 fi
 137 exit $status