grep: refactor grep_objects loop into its own function
[gitweb.git] / git-submodule.sh
index c501b7eafab96460bce4e48532d6bd05992e9829..8175cb279d38a663fc0481e2b11f4b5ea60f8a32 100755 (executable)
@@ -5,11 +5,11 @@
 # Copyright (c) 2007 Lars Hjemli
 
 dashless=$(basename "$0" | sed -e 's/-/ /')
-USAGE="[--quiet] add [-b branch] [--reference <repository>] [--] <repository> <path>
-   or: $dashless [--quiet] status [--cached] [--] [<path>...]
+USAGE="[--quiet] add [-b branch] [--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] [--] [<path>...]
-   or: $dashless [--quiet] summary [--cached] [--summary-limit <n>] [commit] [--] [<path>...]
+   or: $dashless [--quiet] update [--init] [-N|--no-fetch] [--rebase] [--reference <repository>] [--merge] [--recursive] [--] [<path>...]
+   or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
    or: $dashless [--quiet] foreach [--recursive] <command>
    or: $dashless [--quiet] sync [--] [<path>...]"
 OPTIONS_SPEC=
@@ -21,6 +21,9 @@ command=
 branch=
 reference=
 cached=
+recursive=
+init=
+files=
 nofetch=
 update=
 prefix=
@@ -56,7 +59,7 @@ resolve_relative_url ()
 #
 module_list()
 {
-       git ls-files --error-unmatch --stage -- "$@" | grep '^160000 '
+       git ls-files --error-unmatch --stage -- "$@" | sane_grep '^160000 '
 }
 
 #
@@ -97,7 +100,7 @@ module_clone()
        if test -d "$path"
        then
                rmdir "$path" 2>/dev/null ||
-               die "Directory '$path' exist, but is neither empty nor a git repository"
+               die "Directory '$path' exists, but is neither empty nor a git repository"
        fi
 
        test -e "$path" &&
@@ -159,6 +162,11 @@ cmd_add()
        repo=$1
        path=$2
 
+       if test -z "$path"; then
+               path=$(echo "$repo" |
+                       sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
+       fi
+
        if test -z "$repo" -o -z "$path"; then
                usage
        fi
@@ -216,7 +224,7 @@ cmd_add()
 
                module_clone "$path" "$realrepo" "$reference" || exit
                (
-                       unset GIT_DIR
+                       clear_local_git_env
                        cd "$path" &&
                        # ash fails to wordsplit ${branch:+-b "$branch"...}
                        case "$branch" in
@@ -272,7 +280,7 @@ cmd_foreach()
                        name=$(module_name "$path")
                        (
                                prefix="$prefix$path/"
-                               unset GIT_DIR
+                               clear_local_git_env
                                cd "$path" &&
                                eval "$@" &&
                                if test -n "$recursive"
@@ -352,6 +360,7 @@ cmd_init()
 cmd_update()
 {
        # parse $args after "submodule ... update".
+       orig_args="$@"
        while test $# -ne 0
        do
                case "$1" in
@@ -384,6 +393,10 @@ cmd_update()
                        shift
                        update="merge"
                        ;;
+               --recursive)
+                       shift
+                       recursive=1
+                       ;;
                --)
                        shift
                        break
@@ -423,7 +436,7 @@ cmd_update()
                        module_clone "$path" "$url" "$reference"|| exit
                        subsha1=
                else
-                       subsha1=$(unset GIT_DIR; cd "$path" &&
+                       subsha1=$(clear_local_git_env; cd "$path" &&
                                git rev-parse --verify HEAD) ||
                        die "Unable to find current revision in submodule path '$path'"
                fi
@@ -443,7 +456,7 @@ cmd_update()
 
                        if test -z "$nofetch"
                        then
-                               (unset GIT_DIR; cd "$path" &&
+                               (clear_local_git_env; cd "$path" &&
                                        git-fetch) ||
                                die "Unable to fetch in submodule path '$path'"
                        fi
@@ -466,16 +479,22 @@ cmd_update()
                                ;;
                        esac
 
-                       (unset GIT_DIR; cd "$path" && $command "$sha1") ||
+                       (clear_local_git_env; cd "$path" && $command "$sha1") ||
                        die "Unable to $action '$sha1' in submodule path '$path'"
                        say "Submodule path '$path': $msg '$sha1'"
                fi
+
+               if test -n "$recursive"
+               then
+                       (clear_local_git_env; cd "$path" && cmd_update $orig_args) ||
+                       die "Failed to recurse into submodule path '$path'"
+               fi
        done
 }
 
 set_name_rev () {
        revname=$( (
-               unset GIT_DIR
+               clear_local_git_env
                cd "$1" && {
                        git describe "$2" 2>/dev/null ||
                        git describe --tags "$2" 2>/dev/null ||
@@ -496,6 +515,7 @@ set_name_rev () {
 cmd_summary() {
        summary_limit=-1
        for_status=
+       diff_cmd=diff-index
 
        # parse $args after "submodule ... summary".
        while test $# -ne 0
@@ -504,6 +524,9 @@ cmd_summary() {
                --cached)
                        cached="$1"
                        ;;
+               --files)
+                       files="$1"
+                       ;;
                --for-status)
                        for_status="$1"
                        ;;
@@ -532,18 +555,31 @@ cmd_summary() {
 
        test $summary_limit = 0 && return
 
-       if rev=$(git rev-parse -q --verify "$1^0")
+       if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
        then
                head=$rev
-               shift
+               test $# = 0 || shift
+       elif test -z "$1" -o "$1" = "HEAD"
+       then
+               # before the first commit: compare with an empty tree
+               head=$(git hash-object -w -t tree --stdin </dev/null)
+               test -z "$1" || shift
        else
-               head=HEAD
+               head="HEAD"
+       fi
+
+       if [ -n "$files" ]
+       then
+               test -n "$cached" &&
+               die "--cached cannot be used with --files"
+               diff_cmd=diff-files
+               head=
        fi
 
        cd_to_toplevel
        # Get modified modules cared by user
-       modules=$(git diff-index $cached --raw $head -- "$@" |
-               egrep '^:([0-7]* )?160000' |
+       modules=$(git $diff_cmd $cached --raw $head -- "$@" |
+               sane_egrep '^:([0-7]* )?160000' |
                while read mod_src mod_dst sha1_src sha1_dst status name
                do
                        # Always show modules deleted or type-changed (blob<->module)
@@ -556,8 +592,8 @@ cmd_summary() {
 
        test -z "$modules" && return
 
-       git diff-index $cached --raw $head -- $modules |
-       egrep '^:([0-7]* )?160000' |
+       git $diff_cmd $cached --raw $head -- $modules |
+       sane_egrep '^:([0-7]* )?160000' |
        cut -c2- |
        while read mod_src mod_dst sha1_src sha1_dst status name
        do
@@ -614,7 +650,7 @@ cmd_summary() {
                                range=$sha1_dst
                        fi
                        GIT_DIR="$name/.git" \
-                       git log --pretty=oneline --first-parent $range | wc -l
+                       git rev-list --first-parent $range -- | wc -l
                        )
                        total_commits=" ($(($total_commits + 0)))"
                        ;;
@@ -659,7 +695,11 @@ cmd_summary() {
                echo
        done |
        if test -n "$for_status"; then
-               echo "# Modified submodules:"
+               if [ -n "$files" ]; then
+                       echo "# Submodules changed but not updated:"
+               else
+                       echo "# Submodule changes to be committed:"
+               fi
                echo "#"
                sed -e 's|^|# |' -e 's|^# $|#|'
        else
@@ -679,6 +719,7 @@ cmd_summary() {
 cmd_status()
 {
        # parse $args after "submodule ... status".
+       orig_args="$@"
        while test $# -ne 0
        do
                case "$1" in
@@ -688,6 +729,9 @@ cmd_status()
                --cached)
                        cached=1
                        ;;
+               --recursive)
+                       recursive=1
+                       ;;
                --)
                        shift
                        break
@@ -707,22 +751,34 @@ cmd_status()
        do
                name=$(module_name "$path") || exit
                url=$(git config submodule."$name".url)
+               displaypath="$prefix$path"
                if test -z "$url" || ! test -d "$path"/.git -o -f "$path"/.git
                then
-                       say "-$sha1 $path"
+                       say "-$sha1 $displaypath"
                        continue;
                fi
                set_name_rev "$path" "$sha1"
                if git diff-files --quiet -- "$path"
                then
-                       say " $sha1 $path$revname"
+                       say " $sha1 $displaypath$revname"
                else
                        if test -z "$cached"
                        then
-                               sha1=$(unset GIT_DIR; cd "$path" && git rev-parse --verify HEAD)
+                               sha1=$(clear_local_git_env; cd "$path" && git rev-parse --verify HEAD)
                                set_name_rev "$path" "$sha1"
                        fi
-                       say "+$sha1 $path$revname"
+                       say "+$sha1 $displaypath$revname"
+               fi
+
+               if test -n "$recursive"
+               then
+                       (
+                               prefix="$displaypath/"
+                               clear_local_git_env
+                               cd "$path" &&
+                               cmd_status $orig_args
+                       ) ||
+                       die "Failed to recurse into submodule path '$path'"
                fi
        done
 }
@@ -769,7 +825,7 @@ cmd_sync()
                if test -e "$path"/.git
                then
                (
-                       unset GIT_DIR
+                       clear_local_git_env
                        cd "$path"
                        remote=$(get_default_remote)
                        say "Synchronizing submodule url for '$name'"