Documentation: m can be relative in "git-blame -Ln,m"
[gitweb.git] / git-parse-remote.sh
index 63f22818e6aa36b5f101af996941b0471ce3cbf3..4fc602082b23c695211b4333469ae0dce1a33727 100755 (executable)
@@ -7,18 +7,13 @@ GIT_DIR=$(git-rev-parse --git-dir 2>/dev/null) || :;
 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
+               echo ''
                ;;
        *)
-               if test -f "$GIT_DIR/remotes/$1"
+               if test "$(git-repo-config --get "remote.$1.url")"
+               then
+                       echo config
+               elif test -f "$GIT_DIR/remotes/$1"
                then
                        echo remotes
                elif test -f "$GIT_DIR/branches/$1"
@@ -34,30 +29,38 @@ get_remote_url () {
        data_source=$(get_data_source "$1")
        case "$data_source" in
        '')
-               echo "$1" ;;
+               echo "$1"
+               ;;
+       config)
+               git-repo-config --get "remote.$1.url"
+               ;;
        remotes)
                sed -ne '/^URL: */{
                        s///p
                        q
-               }' "$GIT_DIR/remotes/$1" ;;
+               }' "$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/$remainder"
+               sed -e 's/#.*//' "$GIT_DIR/branches/$1"
                ;;
        *)
                die "internal error: get-remote-url $1" ;;
        esac
 }
 
+get_default_remote () {
+       curr_branch=$(git-symbolic-ref -q HEAD | sed -e 's|^refs/heads/||')
+       origin=$(git-repo-config --get "branch.$curr_branch.remote")
+       echo ${origin:-origin}
+}
+
 get_remote_default_refs_for_push () {
        data_source=$(get_data_source "$1")
        case "$data_source" in
-       '' | branches | branches-partial)
+       '' | branches)
                ;; # no default push mapping, just send matching refs.
+       config)
+               git-repo-config --get-all "remote.$1.push" ;;
        remotes)
                sed -ne '/^Push: */{
                        s///p
@@ -67,23 +70,111 @@ 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.  $ls_remote_result has the list
+# of refs available at remote.
+#
+# The first token returned is either "explicit" or "glob"; this
+# is to help prevent randomly "globbed" ref from being chosen as
+# a merge candidate
+expand_refs_wildcard () {
+       first_one=yes
+       for ref
+       do
+               lref=${ref#'+'}
+               # a non glob pattern is given back as-is.
+               expr "z$lref" : 'zrefs/.*/\*:refs/.*/\*$' >/dev/null || {
+                       if test -n "$first_one"
+                       then
+                               echo "explicit"
+                               first_one=
+                       fi
+                       echo "$ref"
+                       continue
+               }
+
+               # glob
+               if test -n "$first_one"
+               then
+                       echo "glob"
+                       first_one=
+               fi
+               from=`expr "z$lref" : 'z\(refs/.*/\)\*:refs/.*/\*$'`
+               to=`expr "z$lref" : 'zrefs/.*/\*:\(refs/.*/\)\*$'`
+               local_force=
+               test "z$lref" = "z$ref" || local_force='+'
+               echo "$ls_remote_result" |
+               sed -e '/\^{}$/d' |
+               (
+                       IFS='   '
+                       while read sha1 name
+                       do
+                               # ignore the ones that do not start with $from
+                               mapped=${name#"$from"}
+                               test "z$name" = "z$mapped" && continue
+                               echo "${local_force}${name}:${to}${mapped}"
+                       done
+               )
+       done
+}
+
 # Subroutine to canonicalize remote:local notation.
 canon_refs_list_for_fetch () {
-       # Leave only the first one alone; add prefix . to the rest
+       # If called from get_remote_default_refs_for_fetch
+       # leave the branches in branch.${curr_branch}.merge alone,
+       # or the first one otherwise; add prefix . to the rest
        # to prevent the secondary branches to be merged by default.
-       dot_prefix=
+       merge_branches=
+       curr_branch=
+       if test "$1" = "-d"
+       then
+               shift ; remote="$1" ; shift
+               set $(expand_refs_wildcard "$@")
+               is_explicit="$1"
+               shift
+               if test "$remote" = "$(get_default_remote)"
+               then
+                       curr_branch=$(git-symbolic-ref -q HEAD | \
+                           sed -e 's|^refs/heads/||')
+                       merge_branches=$(git-repo-config \
+                           --get-all "branch.${curr_branch}.merge")
+               fi
+               if test -z "$merge_branches" && test $is_explicit != explicit
+               then
+                       merge_branches=..this.will.never.match.any.ref..
+               fi
+       fi
        for ref
        do
                force=
                case "$ref" in
                +*)
-                       ref=$(expr "$ref" : '\+\(.*\)')
+                       ref=$(expr "z$ref" : 'z+\(.*\)')
                        force=+
                        ;;
                esac
-               expr "$ref" : '.*:' >/dev/null || ref="${ref}:"
-               remote=$(expr "$ref" : '\([^:]*\):')
-               local=$(expr "$ref" : '[^:]*:\(.*\)')
+               expr "z$ref" : 'z.*:' >/dev/null || ref="${ref}:"
+               remote=$(expr "z$ref" : 'z\([^:]*\):')
+               local=$(expr "z$ref" : 'z[^:]*:\(.*\)')
+               dot_prefix=.
+               if test -z "$merge_branches"
+               then
+                       merge_branches=$remote
+                       dot_prefix=
+               else
+                       for merge_branch in $merge_branches
+                       do
+                           if  test "$remote" = "$merge_branch" ||
+                               test "$local" = "$merge_branch"
+                           then
+                                   dot_prefix=
+                                   break
+                           fi
+                       done
+               fi
                case "$remote" in
                '') remote=HEAD ;;
                refs/heads/* | refs/tags/* | refs/remotes/*) ;;
@@ -97,13 +188,12 @@ canon_refs_list_for_fetch () {
                *) local="refs/heads/$local" ;;
                esac
 
-               if local_ref_name=$(expr "$local" : 'refs/\(.*\)')
+               if local_ref_name=$(expr "z$local" : 'zrefs/\(.*\)')
                then
                   git-check-ref-format "$local_ref_name" ||
                   die "* refusing to create funny ref '$local_ref_name' locally"
                fi
                echo "${dot_prefix}${force}${remote}:${local}"
-               dot_prefix=.
        done
 }
 
@@ -111,18 +201,18 @@ canon_refs_list_for_fetch () {
 get_remote_default_refs_for_fetch () {
        data_source=$(get_data_source "$1")
        case "$data_source" in
-       '' | branches-partial)
+       '')
                echo "HEAD:" ;;
+       config)
+               canon_refs_list_for_fetch -d "$1" \
+                       $(git-repo-config --get-all "remote.$1.fetch") ;;
        branches)
                remote_branch=$(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)
-               # This prefixes the second and later default refspecs
-               # with a '.', to signal git-fetch to mark them
-               # not-for-merge.
-               canon_refs_list_for_fetch $(sed -ne '/^Pull: */{
+               canon_refs_list_for_fetch -d "$1" $(sed -ne '/^Pull: */{
                                                s///p
                                        }' "$GIT_DIR/remotes/$1")
                ;;
@@ -171,7 +261,7 @@ get_remote_refs_for_fetch () {
 
 resolve_alternates () {
        # original URL (xxx.git)
-       top_=`expr "$1" : '\([^:]*:/*[^/]*\)/'`
+       top_=`expr "z$1" : 'z\([^:]*:/*[^/]*\)/'`
        while read path
        do
                case "$path" in