filter-branch: Fix fatal error on bare repositories
[gitweb.git] / git-parse-remote.sh
index c9b899e3d73152a92523ed460f4d90fdab3d6f33..695a4094bb4230341618bd6f16d0bea9bff2e826 100755 (executable)
@@ -2,23 +2,21 @@
 
 # git-ls-remote could be called from outside a git managed repository;
 # this would fail in that case and would issue an error message.
-GIT_DIR=$(git-rev-parse --git-dir 2>/dev/null) || :;
+GIT_DIR=$(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 "z$1" : 'z\([^/]*\)/')
-               remainder=$(expr "z$1" : 'z[^/]*/\(.*\)')
-               if test -f "$GIT_DIR/branches/$token"
-               then
-                       echo branches-partial
-               else
-                       echo ''
-               fi
+               echo ''
+               ;;
+       .)
+               echo self
                ;;
        *)
-               if test -f "$GIT_DIR/remotes/$1"
+               if test "$(git config --get "remote.$1.url")"
+               then
+                       echo config
+               elif test -f "$GIT_DIR/remotes/$1"
                then
                        echo remotes
                elif test -f "$GIT_DIR/branches/$1"
@@ -34,30 +32,41 @@ get_remote_url () {
        data_source=$(get_data_source "$1")
        case "$data_source" in
        '')
-               echo "$1" ;;
+               echo "$1"
+               ;;
+       self)
+               echo "$1"
+               ;;
+       config)
+               git 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 "z$1" : 'z\([^/]*\)/')
-               remainder=$(expr "z$1" : 'z[^/]*/\(.*\)')
-               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 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 | self)
                ;; # no default push mapping, just send matching refs.
+       config)
+               git config --get-all "remote.$1.push" ;;
        remotes)
                sed -ne '/^Push: */{
                        s///p
@@ -67,11 +76,47 @@ 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.  $ls_remote_result has the list
+# of refs available at remote.
+#
+# The first token returned is either "explicit" or "glob"; this
+# is to help prevent randomly "globbed" ref from being chosen as
+# a merge candidate
+expand_refs_wildcard () {
+       echo "$ls_remote_result" |
+       git fetch--tool expand-refs-wildcard "-" "$@"
+}
+
 # Subroutine to canonicalize remote:local notation.
 canon_refs_list_for_fetch () {
-       # Leave only the first one alone; add prefix . to the rest
+       # If called from get_remote_default_refs_for_fetch
+       # leave the branches in branch.${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 $(expand_refs_wildcard "$remote" "$@")
+               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=$(git config \
+                           --get-all "branch.${curr_branch}.merge")
+               fi
+               if test -z "$merge_branches" && test $is_explicit != explicit
+               then
+                       merge_branches=..this.will.never.match.any.ref..
+               fi
+       fi
        for ref
        do
                force=
@@ -84,26 +129,37 @@ canon_refs_list_for_fetch () {
                expr "z$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 $merge_branches
+                       do
+                           [ "$remote" = "$merge_branch" ] &&
+                           dot_prefix= && break
+                       done
+               fi
                case "$remote" in
-               '') remote=HEAD ;;
-               refs/heads/* | refs/tags/* | refs/remotes/*) ;;
+               '' | HEAD ) remote=HEAD ;;
+               refs/*) ;;
                heads/* | tags/* | remotes/* ) remote="refs/$remote" ;;
                *) remote="refs/heads/$remote" ;;
                esac
                case "$local" in
                '') local= ;;
-               refs/heads/* | refs/tags/* | refs/remotes/*) ;;
+               refs/*) ;;
                heads/* | tags/* | remotes/* ) local="refs/$local" ;;
                *) local="refs/heads/$local" ;;
                esac
 
                if local_ref_name=$(expr "z$local" : 'zrefs/\(.*\)')
                then
-                  git-check-ref-format "$local_ref_name" ||
+                  git check-ref-format "$local_ref_name" ||
                   die "* refusing to create funny ref '$local_ref_name' locally"
                fi
                echo "${dot_prefix}${force}${remote}:${local}"
-               dot_prefix=.
        done
 }
 
@@ -111,23 +167,27 @@ 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:" ;;
+       self)
+               canon_refs_list_for_fetch -d "$1" \
+                       $(git for-each-ref --format='%(refname):')
+               ;;
+       config)
+               canon_refs_list_for_fetch -d "$1" \
+                       $(git 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")
                ;;
        *)
-               die "internal error: get-remote-default-ref-for-push $1" ;;
+               die "internal error: get-remote-default-ref-for-fetch $1" ;;
        esac
 }
 
@@ -189,3 +249,16 @@ resolve_alternates () {
                esac
        done
 }
+
+get_uploadpack () {
+       data_source=$(get_data_source "$1")
+       case "$data_source" in
+       config)
+               uplp=$(git config --get "remote.$1.uploadpack")
+               echo ${uplp:-git-upload-pack}
+               ;;
+       *)
+               echo "git-upload-pack"
+               ;;
+       esac
+}