}
translate_merge_tool_path () {
- case "$1" in
- araxis)
- echo compare
- ;;
- bc3)
- echo bcompare
- ;;
- emerge)
- echo emacs
- ;;
- gvimdiff|gvimdiff2)
- echo gvim
- ;;
- vimdiff|vimdiff2)
- echo vim
- ;;
- *)
- echo "$1"
- ;;
- esac
+ echo "$1"
}
check_unchanged () {
- if test "$MERGED" -nt "$BACKUP"; then
+ if test "$MERGED" -nt "$BACKUP"
+ then
status=0
else
- while true; do
+ while true
+ do
echo "$MERGED seems unchanged."
printf "Was the merge successful? [y/n] "
- read answer
+ read answer || return 1
case "$answer" in
y*|Y*) status=0; break ;;
n*|N*) status=1; break ;;
fi
}
+valid_tool_config () {
+ if test -n "$(get_merge_tool_cmd "$1")"
+ then
+ return 0
+ else
+ return 1
+ fi
+}
+
valid_tool () {
+ setup_tool "$1" || valid_tool_config "$1"
+}
+
+setup_tool () {
case "$1" in
- araxis | bc3 | diffuse | ecmerge | emerge | gvimdiff | gvimdiff2 | \
- kdiff3 | meld | opendiff | p4merge | tkdiff | vimdiff | vimdiff2 | xxdiff)
- ;; # happy
- kompare)
- if ! diff_mode; then
- return 1
- fi
- ;;
- tortoisemerge)
- if ! merge_mode; then
- return 1
- fi
+ vim*|gvim*)
+ tool=vim
;;
*)
- if test -z "$(get_merge_tool_cmd "$1")"; then
- return 1
- fi
+ tool="$1"
;;
esac
+ mergetools="$(git --exec-path)/mergetools"
+
+ # Load the default definitions
+ . "$mergetools/defaults"
+ if ! test -f "$mergetools/$tool"
+ then
+ return 1
+ fi
+
+ # Load the redefined functions
+ . "$mergetools/$tool"
+
+ if merge_mode && ! can_merge
+ then
+ echo "error: '$tool' can not be used to resolve merges" >&2
+ exit 1
+ elif diff_mode && ! can_diff
+ then
+ echo "error: '$tool' can only be used to resolve merges" >&2
+ exit 1
+ fi
+ return 0
}
get_merge_tool_cmd () {
# Prints the custom command for a merge tool
- if test -n "$1"; then
- merge_tool="$1"
- else
- merge_tool="$(get_merge_tool)"
- fi
- if diff_mode; then
+ merge_tool="$1"
+ if diff_mode
+ then
echo "$(git config difftool.$merge_tool.cmd ||
- git config mergetool.$merge_tool.cmd)"
+ git config mergetool.$merge_tool.cmd)"
else
echo "$(git config mergetool.$merge_tool.cmd)"
fi
}
+# Entry point for running tools
run_merge_tool () {
+ # If GIT_PREFIX is empty then we cannot use it in tools
+ # that expect to be able to chdir() to its value.
+ GIT_PREFIX=${GIT_PREFIX:-.}
+ export GIT_PREFIX
+
merge_tool_path="$(get_merge_tool_path "$1")" || exit
base_present="$2"
status=0
- case "$1" in
- araxis)
- if merge_mode; then
- touch "$BACKUP"
- if $base_present; then
- "$merge_tool_path" -wait -merge -3 -a1 \
- "$BASE" "$LOCAL" "$REMOTE" "$MERGED" \
- >/dev/null 2>&1
- else
- "$merge_tool_path" -wait -2 \
- "$LOCAL" "$REMOTE" "$MERGED" \
- >/dev/null 2>&1
- fi
- check_unchanged
- else
- "$merge_tool_path" -wait -2 "$LOCAL" "$REMOTE" \
- >/dev/null 2>&1
- fi
- ;;
- bc3)
- if merge_mode; then
- touch "$BACKUP"
- if $base_present; then
- "$merge_tool_path" "$LOCAL" "$REMOTE" "$BASE" \
- -mergeoutput="$MERGED"
- else
- "$merge_tool_path" "$LOCAL" "$REMOTE" \
- -mergeoutput="$MERGED"
- fi
- check_unchanged
- else
- "$merge_tool_path" "$LOCAL" "$REMOTE"
- fi
- ;;
- diffuse)
- if merge_mode; then
- touch "$BACKUP"
- if $base_present; then
- "$merge_tool_path" \
- "$LOCAL" "$MERGED" "$REMOTE" \
- "$BASE" | cat
- else
- "$merge_tool_path" \
- "$LOCAL" "$MERGED" "$REMOTE" | cat
- fi
- check_unchanged
- else
- "$merge_tool_path" "$LOCAL" "$REMOTE" | cat
- fi
- ;;
- ecmerge)
- if merge_mode; then
- touch "$BACKUP"
- if $base_present; then
- "$merge_tool_path" "$BASE" "$LOCAL" "$REMOTE" \
- --default --mode=merge3 --to="$MERGED"
- else
- "$merge_tool_path" "$LOCAL" "$REMOTE" \
- --default --mode=merge2 --to="$MERGED"
- fi
- check_unchanged
- else
- "$merge_tool_path" --default --mode=diff2 \
- "$LOCAL" "$REMOTE"
- fi
- ;;
- emerge)
- if merge_mode; then
- if $base_present; then
- "$merge_tool_path" \
- -f emerge-files-with-ancestor-command \
- "$LOCAL" "$REMOTE" "$BASE" \
- "$(basename "$MERGED")"
- else
- "$merge_tool_path" \
- -f emerge-files-command \
- "$LOCAL" "$REMOTE" \
- "$(basename "$MERGED")"
- fi
- status=$?
- else
- "$merge_tool_path" -f emerge-files-command \
- "$LOCAL" "$REMOTE"
- fi
- ;;
- gvimdiff|vimdiff)
- if merge_mode; then
- touch "$BACKUP"
- if $base_present; then
- "$merge_tool_path" -f -d -c "wincmd J" \
- "$MERGED" "$LOCAL" "$BASE" "$REMOTE"
- else
- "$merge_tool_path" -f -d -c "wincmd l" \
- "$LOCAL" "$MERGED" "$REMOTE"
- fi
- check_unchanged
- else
- "$merge_tool_path" -R -f -d -c "wincmd l" \
- "$LOCAL" "$REMOTE"
- fi
- ;;
- gvimdiff2|vimdiff2)
- if merge_mode; then
- touch "$BACKUP"
- "$merge_tool_path" -f -d -c "wincmd l" \
- "$LOCAL" "$MERGED" "$REMOTE"
- check_unchanged
- else
- "$merge_tool_path" -R -f -d -c "wincmd l" \
- "$LOCAL" "$REMOTE"
- fi
- ;;
- kdiff3)
- if merge_mode; then
- if $base_present; then
- ("$merge_tool_path" --auto \
- --L1 "$MERGED (Base)" \
- --L2 "$MERGED (Local)" \
- --L3 "$MERGED (Remote)" \
- -o "$MERGED" \
- "$BASE" "$LOCAL" "$REMOTE" \
- > /dev/null 2>&1)
- else
- ("$merge_tool_path" --auto \
- --L1 "$MERGED (Local)" \
- --L2 "$MERGED (Remote)" \
- -o "$MERGED" \
- "$LOCAL" "$REMOTE" \
- > /dev/null 2>&1)
- fi
- status=$?
- else
- ("$merge_tool_path" --auto \
- --L1 "$MERGED (A)" \
- --L2 "$MERGED (B)" "$LOCAL" "$REMOTE" \
- > /dev/null 2>&1)
- fi
- ;;
- kompare)
- "$merge_tool_path" "$LOCAL" "$REMOTE"
- ;;
- meld)
- if merge_mode; then
- touch "$BACKUP"
- "$merge_tool_path" "$LOCAL" "$MERGED" "$REMOTE"
- check_unchanged
- else
- "$merge_tool_path" "$LOCAL" "$REMOTE"
- fi
- ;;
- opendiff)
- if merge_mode; then
- touch "$BACKUP"
- if $base_present; then
- "$merge_tool_path" "$LOCAL" "$REMOTE" \
- -ancestor "$BASE" \
- -merge "$MERGED" | cat
- else
- "$merge_tool_path" "$LOCAL" "$REMOTE" \
- -merge "$MERGED" | cat
- fi
- check_unchanged
- else
- "$merge_tool_path" "$LOCAL" "$REMOTE" | cat
- fi
- ;;
- p4merge)
- if merge_mode; then
- touch "$BACKUP"
- $base_present || >"$BASE"
- "$merge_tool_path" "$BASE" "$LOCAL" "$REMOTE" "$MERGED"
- check_unchanged
- else
- "$merge_tool_path" "$LOCAL" "$REMOTE"
- fi
- ;;
- tkdiff)
- if merge_mode; then
- if $base_present; then
- "$merge_tool_path" -a "$BASE" \
- -o "$MERGED" "$LOCAL" "$REMOTE"
- else
- "$merge_tool_path" \
- -o "$MERGED" "$LOCAL" "$REMOTE"
- fi
- status=$?
- else
- "$merge_tool_path" "$LOCAL" "$REMOTE"
- fi
- ;;
- tortoisemerge)
- if $base_present; then
- touch "$BACKUP"
- "$merge_tool_path" \
- -base:"$BASE" -mine:"$LOCAL" \
- -theirs:"$REMOTE" -merged:"$MERGED"
- check_unchanged
- else
- echo "TortoiseMerge cannot be used without a base" 1>&2
- status=1
- fi
- ;;
- xxdiff)
- if merge_mode; then
- touch "$BACKUP"
- if $base_present; then
- "$merge_tool_path" -X --show-merged-pane \
- -R 'Accel.SaveAsMerged: "Ctrl-S"' \
- -R 'Accel.Search: "Ctrl+F"' \
- -R 'Accel.SearchForward: "Ctrl-G"' \
- --merged-file "$MERGED" \
- "$LOCAL" "$BASE" "$REMOTE"
- else
- "$merge_tool_path" -X $extra \
- -R 'Accel.SaveAsMerged: "Ctrl-S"' \
- -R 'Accel.Search: "Ctrl+F"' \
- -R 'Accel.SearchForward: "Ctrl-G"' \
- --merged-file "$MERGED" \
- "$LOCAL" "$REMOTE"
- fi
- check_unchanged
- else
- "$merge_tool_path" \
- -R 'Accel.Search: "Ctrl+F"' \
- -R 'Accel.SearchForward: "Ctrl-G"' \
- "$LOCAL" "$REMOTE"
- fi
- ;;
- *)
- merge_tool_cmd="$(get_merge_tool_cmd "$1")"
- if test -z "$merge_tool_cmd"; then
- if merge_mode; then
- status=1
- fi
- break
- fi
- if merge_mode; then
- trust_exit_code="$(git config --bool \
- mergetool."$1".trustExitCode || echo false)"
- if test "$trust_exit_code" = "false"; then
- touch "$BACKUP"
- ( eval $merge_tool_cmd )
- check_unchanged
- else
- ( eval $merge_tool_cmd )
- status=$?
- fi
- else
- ( eval $merge_tool_cmd )
- fi
- ;;
- esac
+ # Bring tool-specific functions into scope
+ setup_tool "$1"
+
+ if merge_mode
+ then
+ merge_cmd "$1"
+ else
+ diff_cmd "$1"
+ fi
return $status
}
guess_merge_tool () {
- if merge_mode; then
+ if merge_mode
+ then
tools="tortoisemerge"
else
tools="kompare"
fi
- if test -n "$DISPLAY"; then
- if test -n "$GNOME_DESKTOP_SESSION_ID" ; then
+ if test -n "$DISPLAY"
+ then
+ if test -n "$GNOME_DESKTOP_SESSION_ID"
+ then
tools="meld opendiff kdiff3 tkdiff xxdiff $tools"
else
tools="opendiff kdiff3 tkdiff xxdiff meld $tools"
for i in $tools
do
merge_tool_path="$(translate_merge_tool_path "$i")"
- if type "$merge_tool_path" > /dev/null 2>&1; then
+ if type "$merge_tool_path" >/dev/null 2>&1
+ then
echo "$i"
return 0
fi
get_configured_merge_tool () {
# Diff mode first tries diff.tool and falls back to merge.tool.
# Merge mode only checks merge.tool
- if diff_mode; then
+ if diff_mode
+ then
merge_tool=$(git config diff.tool || git config merge.tool)
else
merge_tool=$(git config merge.tool)
fi
- if test -n "$merge_tool" && ! valid_tool "$merge_tool"; then
+ if test -n "$merge_tool" && ! valid_tool "$merge_tool"
+ then
echo >&2 "git config option $TOOL_MODE.tool set to unknown tool: $merge_tool"
echo >&2 "Resetting to default..."
return 1
get_merge_tool_path () {
# A merge tool has been set, so verify that it's valid.
- if test -n "$1"; then
- merge_tool="$1"
- else
- merge_tool="$(get_merge_tool)"
- fi
- if ! valid_tool "$merge_tool"; then
+ merge_tool="$1"
+ if ! valid_tool "$merge_tool"
+ then
echo >&2 "Unknown merge tool $merge_tool"
exit 1
fi
- if diff_mode; then
+ if diff_mode
+ then
merge_tool_path=$(git config difftool."$merge_tool".path ||
- git config mergetool."$merge_tool".path)
+ git config mergetool."$merge_tool".path)
else
merge_tool_path=$(git config mergetool."$merge_tool".path)
fi
- if test -z "$merge_tool_path"; then
+ if test -z "$merge_tool_path"
+ then
merge_tool_path="$(translate_merge_tool_path "$merge_tool")"
fi
if test -z "$(get_merge_tool_cmd "$merge_tool")" &&
- ! type "$merge_tool_path" > /dev/null 2>&1; then
+ ! type "$merge_tool_path" >/dev/null 2>&1
+ then
echo >&2 "The $TOOL_MODE tool $merge_tool is not available as"\
- "'$merge_tool_path'"
+ "'$merge_tool_path'"
exit 1
fi
echo "$merge_tool_path"
get_merge_tool () {
# Check if a merge tool has been configured
- merge_tool=$(get_configured_merge_tool)
+ merge_tool="$(get_configured_merge_tool)"
# Try to guess an appropriate merge tool if no tool has been set.
- if test -z "$merge_tool"; then
+ if test -z "$merge_tool"
+ then
merge_tool="$(guess_merge_tool)" || exit
fi
echo "$merge_tool"