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=$2 status=0
  39
  40 test -n "$base" && test -n "$url" || usage
  41
  42 baserev=$(git rev-parse --verify --quiet "$base"^0)
  43 if test -z "$baserev"
  44 then
  45     die "fatal: Not a valid revision: $base"
  46 fi
  47
  48 #
  49 # $3 must be a symbolic ref, a unique ref, or
  50 # a SHA object expression
  51 #
  52 head=$(git symbolic-ref -q "${3-HEAD}")
  53 head=${head:-$(git show-ref "${3-HEAD}" | cut -d' ' -f2)}
  54 head=${head:-$(git rev-parse --quiet --verify "$3")}
  55
  56 # None of the above? Bad.
  57 test -z "$head" && die "fatal: Not a valid revision: $3"
  58
  59 # This also verifies that the resulting head is unique:
  60 # "git show-ref" could have shown multiple matching refs..
  61 headrev=$(git rev-parse --verify --quiet "$head"^0)
  62 test -z "$headrev" && die "fatal: Ambiguous revision: $3"
  63
  64 # Was it a branch with a description?
  65 branch_name=${head#refs/heads/}
  66 if test "z$branch_name" = "z$headref" ||
  67         ! git config "branch.$branch_name.description" >/dev/null
  68 then
  69         branch_name=
  70 fi
  71
  72 prettyhead=${head#refs/}
  73 prettyhead=${prettyhead#heads/}
  74
  75 merge_base=$(git merge-base $baserev $headrev) ||
  76 die "fatal: No commits in common between $base and $head"
  77
  78 # $head is the refname from the command line.
  79 # If a ref with the same name as $head exists at the remote
  80 # and their values match, use that.
  81 #
  82 # Otherwise find a random ref that matches $headrev.
  83 find_matching_ref='
  84         my ($exact,$found);
  85         while (<STDIN>) {
  86                 my ($sha1, $ref, $deref) = /^(\S+)\s+([^^]+)(\S*)$/;
  87                 next unless ($sha1 eq $ARGV[1]);
  88                 if ($ref eq $ARGV[0]) {
  89                         $exact = $ref;
  90                 }
  91                 if ($sha1 eq $ARGV[0]) {
  92                         $found = $sha1;
  93                 }
  94         }
  95         if ($exact) {
  96                 print "$exact\n";
  97         } elsif ($found) {
  98                 print "$found\n";
  99         }
 100 '
 101
 102 ref=$(git ls-remote "$url" | @@PERL@@ -e "$find_matching_ref" "$head" "$headrev")
 103
 104 if test -z "$ref"
 105 then
 106         echo "warn: No match for $prettyhead found at $url" >&2
 107         echo "warn: Are you sure you pushed '$prettyhead' there?" >&2
 108         status=1
 109 fi
 110
 111 url=$(git ls-remote --get-url "$url")
 112
 113 git show -s --format='The following changes since commit %H:
 114
 115   %s (%ci)
 116
 117 are available in the git repository at:
 118 ' $merge_base &&
 119 echo "  $url $prettyhead" &&
 120 git show -s --format='
 121 for you to fetch changes up to %H:
 122
 123   %s (%ci)
 124
 125 ----------------------------------------------------------------' $headrev &&
 126
 127 if test -n "$branch_name"
 128 then
 129         echo "(from the branch description for $branch_name local branch)"
 130         echo
 131         git config "branch.$branch_name.description"
 132         echo "----------------------------------------------------------------"
 133 fi &&
 134
 135 git shortlog ^$baserev $headrev &&
 136 git diff -M --stat --summary $patch $merge_base..$headrev || status=1
 137
 138 exit $status