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diff --git a/git-mergetool.sh b/git-mergetool.sh
index 7942fd0b6490760b09248b961b38adb89ede1adb..cbbb707959cc64427f7bbd7bfefb0a8f0f263596 100755 (executable)
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
# 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"
}
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
}
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" "$path"
local_mode=`git ls-files -u -- "$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
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
cleanup_temp_files
}
-while case $# in 0) break ;; esac
+while test $# != 0
do
case "$1" in
-t|--tool*)
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`
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