✏️ Editing: git-request-pull Read Only

#!/usr/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"

find_matching_ref () {
	while read sha1 ref
	do
		case "$ref" in
		*"^"?*)
			ref="${ref%"^"*}"
			deref=true
			;;
		*)
			deref=
			;;
		esac

if test "$sha1" = "${remote:-HEAD}"
		then
			echo "$sha1 $sha1"
			break
		fi

case "$ref" in
		"${remote:-HEAD}"|*"/${remote:-HEAD}")
			if test -z "$deref"
			then
				# Remember the matching unpeeled object on the
				# remote side.
				remote_sha1="$sha1"
			fi

if test "$sha1" = "$headrev"
			then
				echo "${remote_sha1:-$headrev} $ref"
				break
			fi
			;;
		esac
	done
}

# Find a ref with the same name as $remote that exists at the remote
# and points to the same commit as the local object.
set fnord $(git ls-remote "$url" | find_matching_ref)
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 $PGP\|SSH\|SIGNED$ /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

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