[PATCH] Start adding the $GIT_DIR/remotes/ support.

All the necessary parsing code is in git-parse-remote-script;
update git-push-script to use it.

Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 144 insertions, 0 deletions

diff --git a/git-parse-remote-script b/git-parse-remote-script
new file mode 100755
index 0000000000..2da7ae8470
--- /dev/null
+++ b/git-parse-remote-script
@@ -0,0 +1,144 @@
+#!/bin/sh
+
+. git-sh-setup-script || die "Not a git archive"
+
+get_data_source () {
+	case "$1" in
+	*/*)
+		# Not so fast.  This could be the partial URL shorthand...
+		token=$(expr "$1" : '\([^/]*\)/')
+		remainder=$(expr "$1" : '[^/]*/\(.*\)')
+		if test -f "$GIT_DIR/branches/$token"
+		then
+			echo branches-partial
+		else
+			echo ''
+		fi
+		;;
+	*)
+		if test -f "$GIT_DIR/remotes/$1"
+		then
+			echo remotes
+		elif test -f "$GIT_DIR/branches/$1"
+		then
+			echo branches
+		else
+			echo ''
+		fi ;;
+	esac
+}
+
+get_remote_url () {
+	data_source=$(get_data_source "$1")
+	case "$data_source" in
+	'')
+		echo "$1" ;;
+	remotes)
+		sed -ne '/^URL: */{
+			s///p
+			q
+		}' "$GIT_DIR/remotes/$1" ;;
+	branches)
+		sed -e 's/#.*//' "$GIT_DIR/branches/$1" ;;
+	branches-partial)
+		token=$(expr "$1" : '\([^/]*\)/')
+		remainder=$(expr "$1" : '[^/]*/\(.*\)')
+		url=$(sed -e 's/#.*//' "$GIT_DIR/branches/$token")
+		echo "$url/$remainder"
+		;;
+	*)
+		die "internal error: get-remote-url $1" ;;
+	esac
+}
+
+get_remote_default_refs_for_push () {
+	data_source=$(get_data_source "$1")
+	case "$data_source" in
+	'' | branches | branches-partial)
+		;; # no default push mapping, just send matching refs.
+	remotes)
+		sed -ne '/^Push: */{
+			s///p
+		}' "$GIT_DIR/remotes/$1" ;;
+	*)
+		die "internal error: get-remote-default-ref-for-push $1" ;;
+	esac
+}
+
+# Subroutine to canonicalize remote:local notation
+canon_refs_list_for_fetch () {
+	for ref
+	do
+		expr "$ref" : '.*:' >/dev/null || ref="${ref}:"
+		remote=$(expr "$ref" : '\([^:]*\):')
+		local=$(expr "$ref" : '[^:]*:\(.*\)')
+		case "$remote" in
+		'') remote=HEAD ;;
+		*) remote="refs/heads/$remote" ;;
+		esac
+		case "$local" in
+		'') local= ;;
+		*) local="refs/heads/$local" ;;
+		esac
+		echo "${remote}:${local}"
+	done
+}
+
+# Returns list of src: (no store), or src:dst (store)
+get_remote_default_refs_for_fetch () {
+	data_source=$(get_data_source "$1")
+	case "$data_source" in
+	'' | branches-partial)
+		echo "HEAD:" ;;
+	branches)
+		remote_branch=$(sed -ne '/#/s/.*#//p' "$GIT_DIR/branches/$1")
+		case "$remote_branch" in '') remote_branch=master ;; esac
+		echo "refs/heads/${remote_branch}:refs/heads/$1"
+		;;
+	remotes)
+		canon_refs_list_for_fetch $(sed -ne '/^Pull: */{
+						s///p
+					}' "$GIT_DIR/remotes/$1")
+		;;
+	*)
+		die "internal error: get-remote-default-ref-for-push $1" ;;
+	esac
+}
+
+get_remote_refs_for_push () {
+	case "$#" in
+	0) die "internal error: get-remote-refs-for-push." ;;
+	1) get_remote_default_refs_for_push "$@" ;;
+	*) shift; echo "$@" ;;
+	esac
+}
+
+get_remote_refs_for_fetch () {
+	case "$#" in
+	0)
+	    die "internal error: get-remote-refs-for-fetch." ;;
+	1)
+	    get_remote_default_refs_for_fetch "$@" ;;
+	*)
+	    shift
+	    tag_just_seen=
+	    for ref
+	    do
+		if test "$tag_just_seen"
+		then
+		    echo "refs/tags/${ref}:refs/tags/${ref}"
+		    tag_just_seen=
+		    continue
+		else
+		    case "$ref" in
+		    tag)
+		        tag_just_seen=yes
+			continue
+			;;
+		    esac
+		fi
+	        canon_refs_list_for_fetch "$ref"
+	    done
+	    ;;
+	esac
+}