Code

attr: don't confuse prefixes with leading directories
[git.git] / git-submodule.sh
index 07dc675cef2c71e487648a4bd8cc18f4d93db917..c94218b8779be63e1441480ef3828fb4ce0b61b0 100755 (executable)
@@ -8,7 +8,7 @@ dashless=$(basename "$0" | sed -e 's/-/ /')
 USAGE="[--quiet] add [-b branch] [-f|--force] [--reference <repository>] [--] <repository> [<path>]
    or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
    or: $dashless [--quiet] init [--] [<path>...]
-   or: $dashless [--quiet] update [--init] [-N|--no-fetch] [--rebase] [--reference <repository>] [--merge] [--recursive] [--] [<path>...]
+   or: $dashless [--quiet] update [--init] [-N|--no-fetch] [-f|--force] [--rebase] [--reference <repository>] [--merge] [--recursive] [--] [<path>...]
    or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
    or: $dashless [--quiet] foreach [--recursive] <command>
    or: $dashless [--quiet] sync [--] [<path>...]"
@@ -34,15 +34,27 @@ resolve_relative_url ()
 {
        remote=$(get_default_remote)
        remoteurl=$(git config "remote.$remote.url") ||
-               die "remote ($remote) does not have a url defined in .git/config"
+               remoteurl=$(pwd) # the repository is its own authoritative upstream
        url="$1"
        remoteurl=${remoteurl%/}
+       sep=/
        while test -n "$url"
        do
                case "$url" in
                ../*)
                        url="${url#../}"
-                       remoteurl="${remoteurl%/*}"
+                       case "$remoteurl" in
+                       */*)
+                               remoteurl="${remoteurl%/*}"
+                               ;;
+                       *:*)
+                               remoteurl="${remoteurl%:*}"
+                               sep=:
+                               ;;
+                       *)
+                               die "cannot strip one component off url '$remoteurl'"
+                               ;;
+                       esac
                        ;;
                ./*)
                        url="${url#./}"
@@ -51,7 +63,7 @@ resolve_relative_url ()
                        break;;
                esac
        done
-       echo "$remoteurl/${url%/}"
+       echo "$remoteurl$sep${url%/}"
 }
 
 #
@@ -60,7 +72,24 @@ resolve_relative_url ()
 #
 module_list()
 {
-       git ls-files --error-unmatch --stage -- "$@" | sane_grep '^160000 '
+       git ls-files --error-unmatch --stage -- "$@" |
+       perl -e '
+       my %unmerged = ();
+       my ($null_sha1) = ("0" x 40);
+       while (<STDIN>) {
+               chomp;
+               my ($mode, $sha1, $stage, $path) =
+                       /^([0-7]+) ([0-9a-f]{40}) ([0-3])\t(.*)$/;
+               next unless $mode eq "160000";
+               if ($stage ne "0") {
+                       if (!$unmerged{$path}++) {
+                               print "$mode $null_sha1 U\t$path\n";
+                       }
+                       next;
+               }
+               print "$_\n";
+       }
+       '
 }
 
 #
@@ -92,26 +121,17 @@ module_clone()
        path=$1
        url=$2
        reference="$3"
-
-       # If there already is a directory at the submodule path,
-       # expect it to be empty (since that is the default checkout
-       # action) and try to remove it.
-       # Note: if $path is a symlink to a directory the test will
-       # succeed but the rmdir will fail. We might want to fix this.
-       if test -d "$path"
+       quiet=
+       if test -n "$GIT_QUIET"
        then
-               rmdir "$path" 2>/dev/null ||
-               die "Directory '$path' exists, but is neither empty nor a git repository"
+               quiet=-q
        fi
 
-       test -e "$path" &&
-       die "A file already exist at path '$path'"
-
        if test -n "$reference"
        then
-               git-clone "$reference" -n "$url" "$path"
+               git-clone $quiet "$reference" -n "$url" "$path"
        else
-               git-clone -n "$url" "$path"
+               git-clone $quiet -n "$url" "$path"
        fi ||
        die "Clone of '$url' into submodule path '$path' failed"
 }
@@ -223,15 +243,6 @@ cmd_add()
                        die "'$path' already exists and is not a valid git repo"
                fi
 
-               case "$repo" in
-               ./*|../*)
-                       url=$(resolve_relative_url "$repo") || exit
-                   ;;
-               *)
-                       url="$repo"
-                       ;;
-               esac
-               git config submodule."$path".url "$url"
        else
 
                module_clone "$path" "$realrepo" "$reference" || exit
@@ -241,10 +252,11 @@ cmd_add()
                        # ash fails to wordsplit ${branch:+-b "$branch"...}
                        case "$branch" in
                        '') git checkout -f -q ;;
-                       ?*) git checkout -f -q -b "$branch" "origin/$branch" ;;
+                       ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
                        esac
                ) || die "Unable to checkout submodule '$path'"
        fi
+       git config submodule."$path".url "$realrepo"
 
        git add $force "$path" ||
        die "Failed to add submodule '$path'"
@@ -344,25 +356,26 @@ cmd_init()
        do
                # Skip already registered paths
                name=$(module_name "$path") || exit
-               url=$(git config submodule."$name".url)
-               test -z "$url" || continue
-
-               url=$(git config -f .gitmodules submodule."$name".url)
-               test -z "$url" &&
-               die "No url found for submodule path '$path' in .gitmodules"
-
-               # Possibly a url relative to parent
-               case "$url" in
-               ./*|../*)
-                       url=$(resolve_relative_url "$url") || exit
-                       ;;
-               esac
-
-               git config submodule."$name".url "$url" ||
-               die "Failed to register url for submodule path '$path'"
+               if test -z "$(git config "submodule.$name.url")"
+               then
+                       url=$(git config -f .gitmodules submodule."$name".url)
+                       test -z "$url" &&
+                       die "No url found for submodule path '$path' in .gitmodules"
+
+                       # Possibly a url relative to parent
+                       case "$url" in
+                       ./*|../*)
+                               url=$(resolve_relative_url "$url") || exit
+                               ;;
+                       esac
+                       git config submodule."$name".url "$url" ||
+                       die "Failed to register url for submodule path '$path'"
+               fi
 
+               # Copy "update" setting when it is not set yet
                upd="$(git config -f .gitmodules submodule."$name".update)"
                test -z "$upd" ||
+               test -n "$(git config submodule."$name".update)" ||
                git config submodule."$name".update "$upd" ||
                die "Failed to register update mode for submodule path '$path'"
 
@@ -391,6 +404,9 @@ cmd_update()
                -N|--no-fetch)
                        nofetch=1
                        ;;
+               -f|--force)
+                       force=$1
+                       ;;
                -r|--rebase)
                        update="rebase"
                        ;;
@@ -429,9 +445,15 @@ cmd_update()
                cmd_init "--" "$@" || return
        fi
 
+       cloned_modules=
        module_list "$@" |
        while read mode sha1 stage path
        do
+               if test "$stage" = U
+               then
+                       echo >&2 "Skipping unmerged submodule $path"
+                       continue
+               fi
                name=$(module_name "$path") || exit
                url=$(git config submodule."$name".url)
                update_module=$(git config submodule."$name".update)
@@ -448,6 +470,7 @@ cmd_update()
                if ! test -d "$path"/.git -o -f "$path"/.git
                then
                        module_clone "$path" "$url" "$reference"|| exit
+                       cloned_modules="$cloned_modules;$name"
                        subsha1=
                else
                        subsha1=$(clear_local_git_env; cd "$path" &&
@@ -462,19 +485,30 @@ cmd_update()
 
                if test "$subsha1" != "$sha1"
                then
-                       force=
-                       if test -z "$subsha1"
+                       subforce=$force
+                       # If we don't already have a -f flag and the submodule has never been checked out
+                       if test -z "$subsha1" -a -z "$force"
                        then
-                               force="-f"
+                               subforce="-f"
                        fi
 
                        if test -z "$nofetch"
                        then
+                               # Run fetch only if $sha1 isn't present or it
+                               # is not reachable from a ref.
                                (clear_local_git_env; cd "$path" &&
-                                       git-fetch) ||
+                                       ( (rev=$(git rev-list -n 1 $sha1 --not --all 2>/dev/null) &&
+                                        test -z "$rev") || git-fetch)) ||
                                die "Unable to fetch in submodule path '$path'"
                        fi
 
+                       # Is this something we just cloned?
+                       case ";$cloned_modules;" in
+                       *";$name;"*)
+                               # then there is no local change to integrate
+                               update_module= ;;
+                       esac
+
                        case "$update_module" in
                        rebase)
                                command="git rebase"
@@ -487,7 +521,7 @@ cmd_update()
                                msg="merged in"
                                ;;
                        *)
-                               command="git checkout $force -q"
+                               command="git checkout $subforce -q"
                                action="checkout"
                                msg="checked out"
                                ;;
@@ -767,6 +801,11 @@ cmd_status()
                name=$(module_name "$path") || exit
                url=$(git config submodule."$name".url)
                displaypath="$prefix$path"
+               if test "$stage" = U
+               then
+                       say "U$sha1 $displaypath"
+                       continue
+               fi
                if test -z "$url" || ! test -d "$path"/.git -o -f "$path"/.git
                then
                        say "-$sha1 $displaypath"
@@ -837,16 +876,20 @@ cmd_sync()
                        ;;
                esac
 
-               if test -e "$path"/.git
+               if git config "submodule.$name.url" >/dev/null 2>/dev/null
                then
-               (
                        say "Synchronizing submodule url for '$name'"
                        git config submodule."$name".url "$url"
-                       clear_local_git_env
-                       cd "$path"
-                       remote=$(get_default_remote)
-                       git config remote."$remote".url "$url"
-               )
+
+                       if test -e "$path"/.git
+                       then
+                       (
+                               clear_local_git_env
+                               cd "$path"
+                               remote=$(get_default_remote)
+                               git config remote."$remote".url "$url"
+                       )
+                       fi
                fi
        done
 }