}
}
-diff_mode() {
+diff_mode () {
test "$TOOL_MODE" = diff
}
-merge_mode() {
+merge_mode () {
test "$TOOL_MODE" = merge
}
+gui_mode () {
+ test "$GIT_MERGETOOL_GUI" = true
+}
+
translate_merge_tool_path () {
echo "$1"
}
}
merge_cmd () {
- trust_exit_code=$(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 )
- fi
+ ( eval $merge_tool_cmd )
}
}
echo "$1"
}
+ # Most tools' exit codes cannot be trusted, so By default we ignore
+ # their exit code and check the merged file's modification time in
+ # check_unchanged() to determine whether or not the merge was
+ # successful. The return value from run_merge_cmd, by default, is
+ # determined by check_unchanged().
+ #
+ # When a tool's exit code can be trusted then the return value from
+ # run_merge_cmd is simply the tool's exit code, and check_unchanged()
+ # is not called.
+ #
+ # The return value of exit_code_trustable() tells us whether or not we
+ # can trust the tool's exit code.
+ #
+ # User-defined and built-in tools default to false.
+ # Built-in tools advertise that their exit code is trustable by
+ # redefining exit_code_trustable() to true.
+
+ exit_code_trustable () {
+ false
+ }
+
+
if ! test -f "$MERGE_TOOLS_DIR/$tool"
then
setup_user_tool
fi
}
+trust_exit_code () {
+ if git config --bool "mergetool.$1.trustExitCode"
+ then
+ :; # OK
+ elif exit_code_trustable
+ then
+ echo true
+ else
+ echo false
+ fi
+}
+
+
# Entry point for running tools
run_merge_tool () {
# If GIT_PREFIX is empty then we cannot use it in tools
# Run a either a configured or built-in merge tool
run_merge_cmd () {
- merge_cmd "$1"
+ mergetool_trust_exit_code=$(trust_exit_code "$1")
+ if test "$mergetool_trust_exit_code" = "true"
+ then
+ merge_cmd "$1"
+ else
+ touch "$BACKUP"
+ merge_cmd "$1"
+ check_unchanged
+ fi
}
list_merge_tool_candidates () {
fi
tools="$tools gvimdiff diffuse diffmerge ecmerge"
tools="$tools p4merge araxis bc codecompare"
+ tools="$tools smerge"
fi
case "${VISUAL:-$EDITOR}" in
*vim*)
}
get_configured_merge_tool () {
- # Diff mode first tries diff.tool and falls back to merge.tool.
- # Merge mode only checks merge.tool
+ keys=
if diff_mode
then
- merge_tool=$(git config diff.tool || git config merge.tool)
+ if gui_mode
+ then
+ keys="diff.guitool merge.guitool diff.tool merge.tool"
+ else
+ keys="diff.tool merge.tool"
+ fi
else
- merge_tool=$(git config merge.tool)
+ if gui_mode
+ then
+ keys="merge.guitool merge.tool"
+ else
+ keys="merge.tool"
+ fi
fi
+
+ merge_tool=$(
+ IFS=' '
+ for key in $keys
+ do
+ selected=$(git config $key)
+ if test -n "$selected"
+ then
+ echo "$selected"
+ return
+ fi
+ done)
+
if test -n "$merge_tool" && ! valid_tool "$merge_tool"
then
- echo >&2 "git config option $TOOL_MODE.tool set to unknown tool: $merge_tool"
+ echo >&2 "git config option $TOOL_MODE.${gui_prefix}tool set to unknown tool: $merge_tool"
echo >&2 "Resetting to default..."
return 1
fi
}
get_merge_tool () {
+ is_guessed=false
# Check if a merge tool has been configured
merge_tool=$(get_configured_merge_tool)
# Try to guess an appropriate merge tool if no tool has been set.
if test -z "$merge_tool"
then
merge_tool=$(guess_merge_tool) || exit
+ is_guessed=true
fi
echo "$merge_tool"
+ test "$is_guessed" = false
+}
+
+mergetool_find_win32_cmd () {
+ executable=$1
+ sub_directory=$2
+
+ # Use $executable if it exists in $PATH
+ if type -p "$executable" >/dev/null 2>&1
+ then
+ printf '%s' "$executable"
+ return
+ fi
+
+ # Look for executable in the typical locations
+ for directory in $(env | grep -Ei '^PROGRAM(FILES(\(X86\))?|W6432)=' |
+ cut -d '=' -f 2- | sort -u)
+ do
+ if test -n "$directory" && test -x "$directory/$sub_directory/$executable"
+ then
+ printf '%s' "$directory/$sub_directory/$executable"
+ return
+ fi
+ done
+
+ printf '%s' "$executable"
}