Code

Update draft release notes to 1.7.6.6
[git.git] / git-submodule.sh
index 9e752904b3d492ef899f172291160c88bf2fa51b..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: $dashless [--quiet] sync [--] [<path>...]"
@@ -34,7 +34,7 @@ resolve_relative_url ()
 {
        remote=$(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=/
@@ -72,7 +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";
+       }
+       '
 }
 
 #
@@ -104,12 +121,17 @@ module_clone()
        path=$1
        url=$2
        reference="$3"
+       quiet=
+       if test -n "$GIT_QUIET"
+       then
+               quiet=-q
+       fi
 
        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 '$path' failed"
 }
@@ -221,15 +243,6 @@ cmd_add()
                        die "'$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" "$reference" || exit
@@ -243,6 +256,7 @@ cmd_add()
                        esac
                ) || die "Unable to checkout submodule '$path'"
        fi
+       git config submodule."$path".url "$realrepo"
 
        git add $force "$path" ||
        die "Failed to add submodule '$path'"
@@ -283,6 +297,10 @@ cmd_foreach()
 
        toplevel=$(pwd)
 
+       # dup stdin so that it can be restored when running the external
+       # command in the subshell (and a recursive call to this function)
+       exec 3<&0
+
        module_list |
        while read mode sha1 stage path
        do
@@ -299,7 +317,7 @@ cmd_foreach()
                                then
                                        cmd_foreach "--recursive" "$@"
                                fi
-                       ) ||
+                       ) <&3 3<&- ||
                        die "Stopping at '$path'; script returned non-zero status."
                fi
        done
@@ -338,25 +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'"
 
@@ -372,41 +391,38 @@ cmd_init()
 cmd_update()
 {
        # parse $args after "submodule ... update".
-       orig_args="$@"
+       orig_flags=
        while test $# -ne 0
        do
                case "$1" in
                -q|--quiet)
-                       shift
                        GIT_QUIET=1
                        ;;
                -i|--init)
                        init=1
-                       shift
                        ;;
                -N|--no-fetch)
-                       shift
                        nofetch=1
                        ;;
+               -f|--force)
+                       force=$1
+                       ;;
                -r|--rebase)
-                       shift
                        update="rebase"
                        ;;
                --reference)
                        case "$2" in '') usage ;; esac
                        reference="--reference=$2"
-                       shift 2
+                       orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
+                       shift
                        ;;
                --reference=*)
                        reference="$1"
-                       shift
                        ;;
                -m|--merge)
-                       shift
                        update="merge"
                        ;;
                --recursive)
-                       shift
                        recursive=1
                        ;;
                --)
@@ -420,6 +436,8 @@ cmd_update()
                        break
                        ;;
                esac
+               orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
+               shift
        done
 
        if test -n "$init"
@@ -427,9 +445,15 @@ cmd_update()
                cmd_init "--" "$@" || 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."$name".update)
@@ -446,6 +470,7 @@ cmd_update()
                if ! test -d "$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" &&
@@ -460,19 +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"
@@ -485,7 +521,7 @@ cmd_update()
                                msg="merged in"
                                ;;
                        *)
-                               command="git checkout $force -q"
+                               command="git checkout $subforce -q"
                                action="checkout"
                                msg="checked out"
                                ;;
@@ -498,7 +534,7 @@ cmd_update()
 
                if test -n "$recursive"
                then
-                       (clear_local_git_env; cd "$path" && cmd_update $orig_args) ||
+                       (clear_local_git_env; cd "$path" && eval cmd_update "$orig_flags") ||
                        die "Failed to recurse into submodule path '$path'"
                fi
        done
@@ -731,7 +767,7 @@ cmd_summary() {
 cmd_status()
 {
        # parse $args after "submodule ... status".
-       orig_args="$@"
+       orig_flags=
        while test $# -ne 0
        do
                case "$1" in
@@ -755,6 +791,7 @@ cmd_status()
                        break
                        ;;
                esac
+               orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
                shift
        done
 
@@ -764,6 +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 $displaypath"
@@ -788,7 +830,7 @@ cmd_status()
                                prefix="$displaypath/"
                                clear_local_git_env
                                cd "$path" &&
-                               cmd_status $orig_args
+                               eval cmd_status "$orig_args"
                        ) ||
                        die "Failed to recurse into submodule path '$path'"
                fi
@@ -834,17 +876,20 @@ cmd_sync()
                        ;;
                esac
 
-               say "Synchronizing submodule url for '$name'"
-               git config submodule."$name".url "$url"
-
-               if test -e "$path"/.git
+               if git config "submodule.$name.url" >/dev/null 2>/dev/null
                then
-               (
-                       clear_local_git_env
-                       cd "$path"
-                       remote=$(get_default_remote)
-                       git config remote."$remote".url "$url"
-               )
+                       say "Synchronizing submodule url for '$name'"
+                       git config submodule."$name".url "$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
 }