X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=git-mergetool.sh;h=cbbb707959cc64427f7bbd7bfefb0a8f0f263596;hb=5c66d0d4580196094e80c552f141525759a8e249;hp=7942fd0b6490760b09248b961b38adb89ede1adb;hpb=3a81b9f571a6b7edd83b3d5f27c3c95d9b1c9d5c;p=git.git

diff --git a/git-mergetool.sh b/git-mergetool.sh
index 7942fd0b6..cbbb70795 100755
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
@@ -5,28 +5,30 @@
 # Copyright (c) 2006 Theodore Y. Ts'o
 #
 # This file is licensed under the GPL v2, or a later version
-# at the discretion of Junio C Hammano.
+# at the discretion of Junio C Hamano.
 #
 
 USAGE='[--tool=tool] [file to merge] ...'
 SUBDIRECTORY_OK=Yes
+OPTIONS_SPEC=
 . git-sh-setup
 require_work_tree
+prefix=$(git rev-parse --show-prefix)
 
 # Returns true if the mode reflects a symlink
-function is_symlink () {
+is_symlink () {
     test "$1" = 120000
 }
 
-function local_present () {
+local_present () {
     test -n "$local_mode"
 }
 
-function remote_present () {
+remote_present () {
     test -n "$remote_mode"
 }
 
-function base_present () {
+base_present () {
     test -n "$base_mode"
 }
 
@@ -39,47 +41,44 @@ cleanup_temp_files () {
     fi
 }
 
-function describe_file () {
+describe_file () {
     mode="$1"
     branch="$2"
     file="$3"
 
-    echo -n "    "
+    printf "  {%s}: " "$branch"
     if test -z "$mode"; then
-	echo -n "'$path' was deleted"
+	echo "deleted"
     elif is_symlink "$mode" ; then
-	echo -n "'$path' is a symlink containing '"
-	cat "$file"
-	echo -n "'"
+	echo "a symbolic link -> '$(cat "$file")'"
     else
 	if base_present; then
-	    echo -n "'$path' was created"
+	    echo "modified"
 	else
-	    echo -n "'$path' was modified"
+	    echo "created"
 	fi
     fi
-    echo " in the $branch branch"
 }
 
 
 resolve_symlink_merge () {
-    while /bin/true; do
-	echo -n "Use (r)emote or (l)ocal, or (a)bort? "
+    while true; do
+	printf "Use (l)ocal or (r)emote, or (a)bort? "
 	read ans
 	case "$ans" in
 	    [lL]*)
-		git-checkout-index -f --stage=2 -- "$path"
-		git-add -- "$path"
+		git checkout-index -f --stage=2 -- "$path"
+		git add -- "$path"
 		cleanup_temp_files --save-backup
 		return
 		;;
-	   [rR]*)
-		git-checkout-index -f --stage=3 -- "$path"
-		git-add -- "$path"
+	    [rR]*)
+		git checkout-index -f --stage=3 -- "$path"
+		git add -- "$path"
 		cleanup_temp_files --save-backup
 		return
 		;;
-	    [qQ]*)
+	    [aA]*)
 		exit 1
 		;;
 	    esac
@@ -87,45 +86,77 @@ resolve_symlink_merge () {
 }
 
 resolve_deleted_merge () {
-    while /bin/true; do
-	echo -n "Use (m)odified or (d)eleted file, or (a)bort? "
+    while true; do
+	if base_present; then
+	    printf "Use (m)odified or (d)eleted file, or (a)bort? "
+	else
+	    printf "Use (c)reated or (d)eleted file, or (a)bort? "
+	fi
 	read ans
 	case "$ans" in
-	    [mM]*)
-		git-add -- "$path"
+	    [mMcC]*)
+		git add -- "$path"
 		cleanup_temp_files --save-backup
 		return
 		;;
-	   [dD]*)
-		git-rm -- "$path"
+	    [dD]*)
+		git rm -- "$path" > /dev/null
 		cleanup_temp_files
 		return
 		;;
-	    [qQ]*)
+	    [aA]*)
 		exit 1
 		;;
 	    esac
 	done
 }
 
-merge_file () {
-    path="$1"
+check_unchanged () {
+    if test "$path" -nt "$BACKUP" ; then
+	status=0;
+    else
+	while true; do
+	    echo "$path seems unchanged."
+	    printf "Was the merge successful? [y/n] "
+	    read answer < /dev/tty
+	    case "$answer" in
+		y*|Y*) status=0; break ;;
+		n*|N*) status=1; break ;;
+	    esac
+	done
+    fi
+}
 
-    if test ! -f "$path" ; then
-	echo "$path: file not found"
-	exit 1
+save_backup () {
+    if test "$status" -eq 0; then
+	mv -- "$BACKUP" "$path.orig"
     fi
+}
 
-    f=`git-ls-files -u -- "$path"`
+remove_backup () {
+    if test "$status" -eq 0; then
+	rm "$BACKUP"
+    fi
+}
+
+merge_file () {
+    path="$1"
+
+    f=`git ls-files -u -- "$path"`
     if test -z "$f" ; then
-	echo "$path: file does not need merging"
+	if test ! -f "$path" ; then
+	    echo "$path: file not found"
+	else
+	    echo "$path: file does not need merging"
+	fi
 	exit 1
     fi
 
-    BACKUP="$path.BACKUP.$$"
-    LOCAL="$path.LOCAL.$$"
-    REMOTE="$path.REMOTE.$$"
-    BASE="$path.BASE.$$"
+    ext="$$$(expr "$path" : '.*\(\.[^/]*\)$')"
+    BACKUP="$path.BACKUP.$ext"
+    LOCAL="$path.LOCAL.$ext"
+    REMOTE="$path.REMOTE.$ext"
+    BASE="$path.BASE.$ext"
 
     mv -- "$path" "$BACKUP"
     cp -- "$BACKUP" "$path"
@@ -134,12 +165,12 @@ merge_file () {
     local_mode=`git ls-files -u -- "$path" | awk '{if ($3==2) print $1;}'`
     remote_mode=`git ls-files -u -- "$path" | awk '{if ($3==3) print $1;}'`
 
-    base_present   && git cat-file blob ":1:$path" > "$BASE" 2>/dev/null
-    local_present  && git cat-file blob ":2:$path" > "$LOCAL" 2>/dev/null
-    remote_present && git cat-file blob ":3:$path" > "$REMOTE" 2>/dev/null
+    base_present   && git cat-file blob ":1:$prefix$path" >"$BASE" 2>/dev/null
+    local_present  && git cat-file blob ":2:$prefix$path" >"$LOCAL" 2>/dev/null
+    remote_present && git cat-file blob ":3:$prefix$path" >"$REMOTE" 2>/dev/null
 
     if test -z "$local_mode" -o -z "$remote_mode"; then
-	echo "Deleted merge conflict for $path:"
+	echo "Deleted merge conflict for '$path':"
 	describe_file "$local_mode" "local" "$LOCAL"
 	describe_file "$remote_mode" "remote" "$REMOTE"
 	resolve_deleted_merge
@@ -147,106 +178,98 @@ merge_file () {
     fi
 
     if is_symlink "$local_mode" || is_symlink "$remote_mode"; then
-	echo "Symlink merge conflict for $path:"
+	echo "Symbolic link merge conflict for '$path':"
 	describe_file "$local_mode" "local" "$LOCAL"
 	describe_file "$remote_mode" "remote" "$REMOTE"
 	resolve_symlink_merge
 	return
     fi
 
-    echo "Normal merge conflict for $path:"
+    echo "Normal merge conflict for '$path':"
     describe_file "$local_mode" "local" "$LOCAL"
     describe_file "$remote_mode" "remote" "$REMOTE"
-    echo -n "Hit return to start merge resolution tool ($merge_tool): "
+    printf "Hit return to start merge resolution tool (%s): " "$merge_tool"
     read ans
 
     case "$merge_tool" in
 	kdiff3)
 	    if base_present ; then
-		(kdiff3 --auto --L1 "$path (Base)" -L2 "$path (Local)" --L3 "$path (Remote)" \
+		("$merge_tool_path" --auto --L1 "$path (Base)" --L2 "$path (Local)" --L3 "$path (Remote)" \
 		    -o "$path" -- "$BASE" "$LOCAL" "$REMOTE" > /dev/null 2>&1)
 	    else
-		(kdiff3 --auto -L1 "$path (Local)" --L2 "$path (Remote)" \
+		("$merge_tool_path" --auto --L1 "$path (Local)" --L2 "$path (Remote)" \
 		    -o "$path" -- "$LOCAL" "$REMOTE" > /dev/null 2>&1)
 	    fi
 	    status=$?
-	    if test "$status" -eq 0; then
-		rm "$BACKUP"
-	    fi
+	    remove_backup
 	    ;;
 	tkdiff)
 	    if base_present ; then
-		tkdiff -a "$BASE" -o "$path" -- "$LOCAL" "$REMOTE"
+		"$merge_tool_path" -a "$BASE" -o "$path" -- "$LOCAL" "$REMOTE"
 	    else
-		tkdiff -o "$path" -- "$LOCAL" "$REMOTE"
+		"$merge_tool_path" -o "$path" -- "$LOCAL" "$REMOTE"
 	    fi
 	    status=$?
-	    if test "$status" -eq 0; then
-		mv -- "$BACKUP" "$path.orig"
-	    fi
+	    save_backup
 	    ;;
 	meld|vimdiff)
 	    touch "$BACKUP"
-	    $merge_tool -- "$LOCAL" "$path" "$REMOTE"
-	    if test "$path" -nt "$BACKUP" ; then
-		status=0;
-	    else
-		while true; do
-		    echo "$path seems unchanged."
-		    echo -n "Was the merge successful? [y/n] "
-		    read answer < /dev/tty
-		    case "$answer" in
-			y*|Y*) status=0; break ;;
-			n*|N*) status=1; break ;;
-		    esac
-		done
-	    fi
-	    if test "$status" -eq 0; then
-		mv -- "$BACKUP" "$path.orig"
-	    fi
+	    "$merge_tool_path" -- "$LOCAL" "$path" "$REMOTE"
+	    check_unchanged
+	    save_backup
 	    ;;
+	gvimdiff)
+		touch "$BACKUP"
+		"$merge_tool_path" -f -- "$LOCAL" "$path" "$REMOTE"
+		check_unchanged
+		save_backup
+		;;
 	xxdiff)
 	    touch "$BACKUP"
 	    if base_present ; then
-		xxdiff -X --show-merged-pane \
+		"$merge_tool_path" -X --show-merged-pane \
 		    -R 'Accel.SaveAsMerged: "Ctrl-S"' \
 		    -R 'Accel.Search: "Ctrl+F"' \
 		    -R 'Accel.SearchForward: "Ctrl-G"' \
 		    --merged-file "$path" -- "$LOCAL" "$BASE" "$REMOTE"
 	    else
-		xxdiff -X --show-merged-pane \
+		"$merge_tool_path" -X --show-merged-pane \
 		    -R 'Accel.SaveAsMerged: "Ctrl-S"' \
 		    -R 'Accel.Search: "Ctrl+F"' \
 		    -R 'Accel.SearchForward: "Ctrl-G"' \
 		    --merged-file "$path" -- "$LOCAL" "$REMOTE"
 	    fi
-	    if test "$path" -nt "$BACKUP" ; then
-		status=0;
+	    check_unchanged
+	    save_backup
+	    ;;
+	opendiff)
+	    touch "$BACKUP"
+	    if base_present; then
+		"$merge_tool_path" "$LOCAL" "$REMOTE" -ancestor "$BASE" -merge "$path" | cat
 	    else
-		while true; do
-		    echo "$path seems unchanged."
-		    echo -n "Was the merge successful? [y/n] "
-		    read answer < /dev/tty
-		    case "$answer" in
-			y*|Y*) status=0; break ;;
-			n*|N*) status=1; break ;;
-		    esac
-		done
+		"$merge_tool_path" "$LOCAL" "$REMOTE" -merge "$path" | cat
 	    fi
-	    if test "$status" -eq 0; then
-		mv -- "$BACKUP" "$path.orig"
+	    check_unchanged
+	    save_backup
+	    ;;
+	ecmerge)
+	    touch "$BACKUP"
+	    if base_present; then
+		"$merge_tool_path" "$BASE" "$LOCAL" "$REMOTE" --mode=merge3 --to="$path"
+	    else
+		"$merge_tool_path" "$LOCAL" "$REMOTE" --mode=merge2 --to="$path"
 	    fi
+	    check_unchanged
+	    save_backup
 	    ;;
 	emerge)
 	    if base_present ; then
-		emacs -f emerge-files-with-ancestor-command "$LOCAL" "$REMOTE" "$BASE" "$path"
+		"$merge_tool_path" -f emerge-files-with-ancestor-command "$LOCAL" "$REMOTE" "$BASE" "$(basename "$path")"
 	    else
-		emacs -f emerge-files-command "$LOCAL" "$REMOTE" "$path"
+		"$merge_tool_path" -f emerge-files-command "$LOCAL" "$REMOTE" "$(basename "$path")"
 	    fi
 	    status=$?
-	    if test "$status" -eq 0; then
-		mv -- "$BACKUP" "$path.orig"
-	    fi
+	    save_backup
 	    ;;
     esac
     if test "$status" -ne 0; then
@@ -258,7 +281,7 @@ merge_file () {
     cleanup_temp_files
 }
 
-while case $# in 0) break ;; esac
+while test $# != 0
 do
     case "$1" in
 	-t|--tool*)
@@ -286,56 +309,83 @@ do
     shift
 done
 
+valid_tool() {
+	case "$1" in
+		kdiff3 | tkdiff | xxdiff | meld | opendiff | emerge | vimdiff | gvimdiff | ecmerge)
+			;; # happy
+		*)
+			return 1
+			;;
+	esac
+}
+
+init_merge_tool_path() {
+	merge_tool_path=`git config mergetool.$1.path`
+	if test -z "$merge_tool_path" ; then
+		case "$1" in
+			emerge)
+				merge_tool_path=emacs
+				;;
+			*)
+				merge_tool_path=$1
+				;;
+		esac
+	fi
+}
+
+
 if test -z "$merge_tool"; then
-    merge_tool=`git-config merge.tool`
-    case "$merge_tool" in
-	kdiff3 | tkdiff | xxdiff | meld | emerge | vimdiff)
-	    ;; # happy
-	*)
+    merge_tool=`git config merge.tool`
+    if test -n "$merge_tool" && ! valid_tool "$merge_tool"; then
 	    echo >&2 "git config option merge.tool set to unknown tool: $merge_tool"
 	    echo >&2 "Resetting to default..."
 	    unset merge_tool
-	    ;;
-    esac
+    fi
 fi
 
 if test -z "$merge_tool" ; then
-    if type kdiff3 >/dev/null 2>&1 && test -n "$DISPLAY"; then
-	merge_tool="kdiff3";
-    elif type tkdiff >/dev/null 2>&1 && test -n "$DISPLAY"; then
-	merge_tool=tkdiff
-    elif type xxdiff >/dev/null 2>&1 && test -n "$DISPLAY"; then
-	merge_tool=xxdiff
-    elif type meld >/dev/null 2>&1 && test -n "$DISPLAY"; then
-	merge_tool=meld
-    elif type emacs >/dev/null 2>&1; then
-	merge_tool=emerge
-    elif type vimdiff >/dev/null 2>&1; then
-	merge_tool=vimdiff
-    else
-	echo "No available merge resolution programs available."
+    if test -n "$DISPLAY"; then
+        merge_tool_candidates="kdiff3 tkdiff xxdiff meld gvimdiff"
+        if test -n "$GNOME_DESKTOP_SESSION_ID" ; then
+            merge_tool_candidates="meld $merge_tool_candidates"
+        fi
+        if test "$KDE_FULL_SESSION" = "true"; then
+            merge_tool_candidates="kdiff3 $merge_tool_candidates"
+        fi
+    fi
+    if echo "${VISUAL:-$EDITOR}" | grep 'emacs' > /dev/null 2>&1; then
+        merge_tool_candidates="$merge_tool_candidates emerge"
+    fi
+    if echo "${VISUAL:-$EDITOR}" | grep 'vim' > /dev/null 2>&1; then
+        merge_tool_candidates="$merge_tool_candidates vimdiff"
+    fi
+    merge_tool_candidates="$merge_tool_candidates opendiff emerge vimdiff"
+    echo "merge tool candidates: $merge_tool_candidates"
+    for i in $merge_tool_candidates; do
+        init_merge_tool_path $i
+        if type "$merge_tool_path" > /dev/null 2>&1; then
+            merge_tool=$i
+            break
+        fi
+    done
+    if test -z "$merge_tool" ; then
+	echo "No known merge resolution program available."
 	exit 1
     fi
+else
+    if ! valid_tool "$merge_tool"; then
+        echo >&2 "Unknown merge_tool $merge_tool"
+        exit 1
+    fi
+
+    init_merge_tool_path "$merge_tool"
+
+    if ! type "$merge_tool_path" > /dev/null 2>&1; then
+        echo "The merge tool $merge_tool is not available as '$merge_tool_path'"
+        exit 1
+    fi
 fi
 
-case "$merge_tool" in
-    kdiff3|tkdiff|meld|xxdiff|vimdiff)
-	if ! type "$merge_tool" > /dev/null 2>&1; then
-	    echo "The merge tool $merge_tool is not available"
-	    exit 1
-	fi
-	;;
-    emerge)
-	if ! type "emacs" > /dev/null 2>&1; then
-	    echo "Emacs is not available"
-	    exit 1
-	fi
-	;;
-    *)
-	echo "Unknown merge tool: $merge_tool"
-	exit 1
-	;;
-esac
 
 if test $# -eq 0 ; then
 	files=`git ls-files -u | sed -e 's/^[^	]*	//' | sort -u`
@@ -343,15 +393,18 @@ if test $# -eq 0 ; then
 		echo "No files need merging"
 		exit 0
 	fi
-	echo Merging the files: $files
-	git ls-files -u | sed -e 's/^[^	]*	//' | sort -u | while read i
+	echo Merging the files: "$files"
+	git ls-files -u |
+	sed -e 's/^[^	]*	//' |
+	sort -u |
+	while IFS= read i
 	do
-		echo ""
+		printf "\n"
 		merge_file "$i" < /dev/tty > /dev/tty
 	done
 else
 	while test $# -gt 0; do
-		echo ""
+		printf "\n"
 		merge_file "$1"
 		shift
 	done