Squashed 'third_party/git/' content from commit cb71568594

git-subtree-dir: third_party/git
git-subtree-split: cb715685942260375e1eb8153b0768a376e4ece7

1 files changed, 172 insertions, 0 deletions

diff --git a/git-request-pull.sh b/git-request-pull.sh
new file mode 100755
index 0000000000..2d0e44656c
--- /dev/null
+++ b/git-request-pull.sh
@@ -0,0 +1,172 @@
+#!/bin/sh
+# Copyright 2005, Ryan Anderson <ryan@michonline.com>
+#
+# This file is licensed under the GPL v2, or a later version
+# at the discretion of Linus Torvalds.
+
+SUBDIRECTORY_OK='Yes'
+OPTIONS_KEEPDASHDASH=
+OPTIONS_STUCKLONG=
+OPTIONS_SPEC='git request-pull [options] start url [end]
+--
+p    show patch text as well
+'
+
+. git-sh-setup
+
+GIT_PAGER=
+export GIT_PAGER
+
+patch=
+while	case "$#" in 0) break ;; esac
+do
+	case "$1" in
+	-p)
+		patch=-p ;;
+	--)
+		shift; break ;;
+	-*)
+		usage ;;
+	*)
+		break ;;
+	esac
+	shift
+done
+
+base=$1 url=$2 status=0
+
+test -n "$base" && test -n "$url" || usage
+
+baserev=$(git rev-parse --verify --quiet "$base"^0)
+if test -z "$baserev"
+then
+    die "fatal: Not a valid revision: $base"
+fi
+
+#
+# $3 must be a symbolic ref, a unique ref, or
+# a SHA object expression. It can also be of
+# the format 'local-name:remote-name'.
+#
+local=${3%:*}
+local=${local:-HEAD}
+remote=${3#*:}
+pretty_remote=${remote#refs/}
+pretty_remote=${pretty_remote#heads/}
+head=$(git symbolic-ref -q "$local")
+head=${head:-$(git show-ref --heads --tags "$local" | cut -d' ' -f2)}
+head=${head:-$(git rev-parse --quiet --verify "$local")}
+
+# None of the above? Bad.
+test -z "$head" && die "fatal: Not a valid revision: $local"
+
+# This also verifies that the resulting head is unique:
+# "git show-ref" could have shown multiple matching refs..
+headrev=$(git rev-parse --verify --quiet "$head"^0)
+test -z "$headrev" && die "fatal: Ambiguous revision: $local"
+
+local_sha1=$(git rev-parse --verify --quiet "$head")
+
+# Was it a branch with a description?
+branch_name=${head#refs/heads/}
+if test "z$branch_name" = "z$headref" ||
+	! git config "branch.$branch_name.description" >/dev/null
+then
+	branch_name=
+fi
+
+merge_base=$(git merge-base $baserev $headrev) ||
+die "fatal: No commits in common between $base and $head"
+
+# $head is the refname from the command line.
+# Find a ref with the same name as $head that exists at the remote
+# and points to the same commit as the local object.
+find_matching_ref='
+	my ($head,$headrev) = (@ARGV);
+	my $pattern = qr{/\Q$head\E$};
+	my ($remote_sha1, $found);
+
+	while (<STDIN>) {
+		chomp;
+		my ($sha1, $ref, $deref) = /^(\S+)\s+([^^]+)(\S*)$/;
+
+		if ($sha1 eq $head) {
+			$found = $remote_sha1 = $sha1;
+			break;
+		}
+
+		if ($ref eq $head || $ref =~ $pattern) {
+			if ($deref eq "") {
+				# Remember the matching object on the remote side
+				$remote_sha1 = $sha1;
+			}
+			if ($sha1 eq $headrev) {
+				$found = $ref;
+				break;
+			}
+		}
+	}
+	if ($found) {
+		$remote_sha1 = $headrev if ! defined $remote_sha1;
+		print "$remote_sha1 $found\n";
+	}
+'
+
+set fnord $(git ls-remote "$url" | @@PERL@@ -e "$find_matching_ref" "${remote:-HEAD}" "$headrev")
+remote_sha1=$2
+ref=$3
+
+if test -z "$ref"
+then
+	echo "warn: No match for commit $headrev found at $url" >&2
+	echo "warn: Are you sure you pushed '${remote:-HEAD}' there?" >&2
+	status=1
+elif test "$local_sha1" != "$remote_sha1"
+then
+	echo "warn: $head found at $url but points to a different object" >&2
+	echo "warn: Are you sure you pushed '${remote:-HEAD}' there?" >&2
+	status=1
+fi
+
+# Special case: turn "for_linus" to "tags/for_linus" when it is correct
+if test "$ref" = "refs/tags/$pretty_remote"
+then
+	pretty_remote=tags/$pretty_remote
+fi
+
+url=$(git ls-remote --get-url "$url")
+
+git show -s --format='The following changes since commit %H:
+
+  %s (%ci)
+
+are available in the Git repository at:
+' $merge_base &&
+echo "  $url $pretty_remote" &&
+git show -s --format='
+for you to fetch changes up to %H:
+
+  %s (%ci)
+
+----------------------------------------------------------------' $headrev &&
+
+if test $(git cat-file -t "$head") = tag
+then
+	git cat-file tag "$head" |
+	sed -n -e '1,/^$/d' -e '/^-----BEGIN PGP /q' -e p
+	echo
+	echo "----------------------------------------------------------------"
+fi &&
+
+if test -n "$branch_name"
+then
+	echo "(from the branch description for $branch_name local branch)"
+	echo
+	git config "branch.$branch_name.description"
+	echo "----------------------------------------------------------------"
+fi &&
+
+git shortlog ^$baserev $headrev &&
+git diff -M --stat --summary $patch $merge_base..$headrev || status=1
+
+exit $status