git-fetch: allow glob pattern in refspec

This adds Andy's refspec glob.  You can have a single line:

	Pull: refs/heads/*:refs/remotes/origin/*

in your ".git/remotes/origin" and say "git fetch" to retrieve
all refs under heads/ at the remote side to remotes/origin/ in
the local repository.

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

diff --git a/git-parse-remote.sh b/git-parse-remote.sh
index c325ef761e4c558ab5c7c560da942e127e1be040..e281b7c6ebd5515d74201869574eed6077f37c9d 100755 (executable)
--- a/git-parse-remote.sh
+++ b/git-parse-remote.sh
@@ -90,6 +90,39 @@ get_remote_default_refs_for_push () {
        esac
 }
 
+# Called from canon_refs_list_for_fetch -d "$remote", which
+# is called from get_remote_default_refs_for_fetch to grok
+# refspecs that are retrieved from the configuration, but not
+# from get_remote_refs_for_fetch when it deals with refspecs
+# supplied on the command line.  $ls_remote_result has the list
+# of refs available at remote.
+expand_refs_wildcard () {
+       for ref
+       do
+               # a non glob pattern is given back as-is.
+               expr "z$ref" : 'zrefs/.*/\*:refs/.*/\*$' >/dev/null || {
+                       echo "$ref"
+                       continue
+               }
+               from=`expr "z$ref" : 'z\(refs/.*/\)\*:refs/.*/\*$'`
+               to=`expr "z$ref" : 'zrefs/.*/\*:\(refs/.*/\)\*$'`
+               echo "$ls_remote_result" |
+               (
+                       IFS='   '
+                       while read sha1 name
+                       do
+                               mapped=${name#"$from"}
+                               if test "z$name" != "z${name#'^{}'}" ||
+                                       test "z$name" = "z$mapped"
+                               then
+                                       continue
+                               fi
+                               echo "${name}:${to}${mapped}"
+                       done
+               )
+       done
+}
+
 # Subroutine to canonicalize remote:local notation.
 canon_refs_list_for_fetch () {
        # If called from get_remote_default_refs_for_fetch
@@ -107,6 +140,8 @@ canon_refs_list_for_fetch () {
                        merge_branches=$(git-repo-config \
                            --get-all "branch.${curr_branch}.merge")
                fi
+               set x $(expand_refs_wildcard "$@")
+               shift
        fi
        for ref
        do