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godot/editor/pot_generator.cpp

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/*************************************************************************/
/* pot_generator.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "pot_generator.h"
#include "core/class_db.h"
#include "core/error_macros.h"
#include "core/io/resource_loader.h"
#include "core/project_settings.h"
#include "core/script_language.h"
#include "core/variant.h"
#include "modules/gdscript/gdscript.h"
#include "scene/resources/packed_scene.h"
POTGenerator *POTGenerator::singleton = nullptr;
//#define DEBUG_POT
#ifdef DEBUG_POT
void _print_all_translation_strings(const OrderedHashMap<String, Set<String>> &p_all_translation_strings) {
for (auto E_pair = p_all_translation_strings.front(); E_pair; E_pair = E_pair.next()) {
String msg = static_cast<String>(E_pair.key()) + " : ";
for (Set<String>::Element *E = E_pair.value().front(); E; E = E->next()) {
msg += E->get() + " ";
}
print_line(msg);
}
}
#endif
void POTGenerator::generate_pot(const String &p_file) {
if (!ProjectSettings::get_singleton()->has_setting("locale/translations_pot_files")) {
WARN_PRINT("No files selected for POT generation.");
return;
}
// Clear all_translation_strings of the previous round.
all_translation_strings.clear();
Vector<String> files = ProjectSettings::get_singleton()->get("locale/translations_pot_files");
Vector<String> translation_strings;
List<String> packed_scene_extensions;
ResourceLoader::get_recognized_extensions_for_type("PackedScene", &packed_scene_extensions);
// Collect all translatable strings according to files order in "POT Generation" setting.
for (int i = 0; i < files.size(); i++) {
String file_path = files[i];
String file_extension = file_path.get_extension();
Error err;
RES loaded_res = ResourceLoader::load(file_path, "", false, &err);
if (err) {
ERR_PRINT("Failed to load " + file_path);
continue;
}
bool is_scene_file = false;
for (List<String>::Element *E = packed_scene_extensions.front(); E; E = E->next()) {
if (file_extension == E->get()) {
is_scene_file = true;
break;
}
}
if (is_scene_file) {
Ref<PackedScene> ps = loaded_res;
translation_strings = _parse_scene(ps->get_state());
} else if (file_extension == "gd") {
// Currently we only support GDScript.
Ref<GDScript> s = loaded_res;
translation_strings = _parse_script(s->get_source_code());
} else {
ERR_PRINT("Unrecognized file extension in generate_pot()");
continue;
}
// Store translation strings parsed in this iteration along with their corresponding source file - to write into POT later on.
for (int j = 0; j < translation_strings.size(); j++) {
all_translation_strings[translation_strings[j]].insert(file_path);
}
}
#ifdef DEBUG_POT
_print_all_translation_strings(all_translation_strings);
#endif
_write_to_pot(p_file);
}
Vector<String> POTGenerator::_parse_scene(const Ref<SceneState> &p_state) {
// Parse specific scene Node's properties (see in constructor) that are auto-translated by the engine when set. E.g Label's text property.
// These properties are translated with the tr() function in the C++ code when being set or updated.
Vector<String> parsed_strings;
String property_name;
Variant property_value;
for (int i = 0; i < p_state->get_node_count(); i++) {
if (!ClassDB::is_parent_class(p_state->get_node_type(i), "Control") && !ClassDB::is_parent_class(p_state->get_node_type(i), "Viewport")) {
continue;
}
for (int j = 0; j < p_state->get_node_property_count(i); j++) {
property_name = p_state->get_node_property_name(i, j);
if (!lookup_properties.has(property_name)) {
continue;
}
property_value = p_state->get_node_property_value(i, j);
if (property_name == "script" && property_value.get_type() == Variant::OBJECT && !property_value.is_null()) {
// Parse built-in script. Currently we only support GDScript.
Ref<GDScript> s = Object::cast_to<GDScript>(property_value);
parsed_strings.append_array(_parse_script(s->get_source_code()));
} else if (property_name == "filters") {
// Extract FileDialog's filters property with values in format "*.png ; PNG Images","*.gd ; GDScript Files".
Vector<String> str_values = property_value;
for (int k = 0; k < str_values.size(); k++) {
String desc = str_values[k].get_slice(";", 1).strip_edges();
if (!desc.empty()) {
parsed_strings.push_back(desc);
}
}
} else if (property_value.get_type() == Variant::STRING) {
String str_value = String(property_value);
// Prevent reading text containing only spaces.
if (!str_value.strip_edges().empty()) {
parsed_strings.push_back(str_value);
}
}
}
}
return parsed_strings;
}
Vector<String> POTGenerator::_parse_script(const String &p_source_code) {
// Parse and match all GDScript function API that involves translation string.
// E.g get_node("Label").text = "something", var test = tr("something")
// "something" will be matched and collected
// The extra complication in the regex pattern is to ensure that the matching works when users write over multiple lines, use tabs etc.
Vector<String> parsed_strings;
regex.clear();
regex.compile(String("|").join(patterns));
Array results = regex.search_all(p_source_code);
_get_captured_strings(results, &parsed_strings);
// Special handling for FileDialog
Vector<String> temp;
_parse_file_dialog(p_source_code, &temp);
parsed_strings.append_array(temp);
// Filter out / and +
String filter = "(?:\\\\\\n|\"[\\s\\\\]*\\+\\s*\")";
regex.clear();
regex.compile(filter);
for (int i = 0; i < parsed_strings.size(); i++) {
parsed_strings.set(i, regex.sub(parsed_strings[i], "", true));
}
return parsed_strings;
}
void POTGenerator::_parse_file_dialog(const String &p_source_code, Vector<String> *r_output) {
// FileDialog API has the form .filters = PackedStringArray(["*.png ; PNG Images","*.gd ; GDScript Files"]).
// First filter: Get "*.png ; PNG Images", "*.gd ; GDScript Files" from PackedStringArray.
regex.clear();
regex.compile(String("|").join(file_dialog_patterns));
Array results = regex.search_all(p_source_code);
Vector<String> temp;
_get_captured_strings(results, &temp);
String captured_strings = String(",").join(temp);
// Second filter: Get the texts after semicolon from "*.png ; PNG Images","*.gd ; GDScript Files".
String second_filter = "\"[^;]+;" + text + "\"";
regex.clear();
regex.compile(second_filter);
results = regex.search_all(captured_strings);
_get_captured_strings(results, r_output);
for (int i = 0; i < r_output->size(); i++) {
r_output->set(i, r_output->get(i).strip_edges());
}
}
void POTGenerator::_get_captured_strings(const Array &p_results, Vector<String> *r_output) {
Ref<RegExMatch> result;
for (int i = 0; i < p_results.size(); i++) {
result = p_results[i];
for (int j = 0; j < result->get_group_count(); j++) {
String s = result->get_string(j + 1);
// Prevent reading text with only spaces.
if (!s.strip_edges().empty()) {
r_output->push_back(s);
}
}
}
}
void POTGenerator::_write_to_pot(const String &p_file) {
Error err;
FileAccess *file = FileAccess::open(p_file, FileAccess::WRITE, &err);
if (err != OK) {
ERR_PRINT("Failed to open " + p_file);
return;
}
String project_name = ProjectSettings::get_singleton()->get("application/config/name");
Vector<String> files = ProjectSettings::get_singleton()->get("locale/translations_pot_files");
String extracted_files = "";
for (int i = 0; i < files.size(); i++) {
extracted_files += "# " + files[i] + "\n";
}
const String header =
"# LANGUAGE translation for " + project_name + " for the following files:\n" + extracted_files +
"#\n"
"#\n"
"# FIRST AUTHOR < EMAIL @ADDRESS>, YEAR.\n"
"#\n"
"#, fuzzy\n"
"msgid \"\"\n"
"msgstr \"\"\n"
"\"Project-Id-Version: " +
project_name + "\\n\"\n"
"\"Content-Type: text/plain; charset=UTF-8\\n\"\n"
"\"Content-Transfer-Encoding: 8-bit\\n\"\n\n";
file->store_string(header);
for (OrderedHashMap<String, Set<String>>::Element E_pair = all_translation_strings.front(); E_pair; E_pair = E_pair.next()) {
String msg = E_pair.key();
// Write file locations.
for (Set<String>::Element *E = E_pair.value().front(); E; E = E->next()) {
file->store_line("#: " + E->get().trim_prefix("res://"));
}
// Write msgid.
Vector<String> msg_lines = msg.split("\\n");
file->store_string("msgid \"" + msg_lines[0]);
for (int i = 1; i < msg_lines.size(); i++) {
file->store_line("\\n\"");
file->store_string("\"" + msg_lines[i]);
}
file->store_line("\"");
file->store_line("msgstr \"\"\n");
}
file->close();
}
POTGenerator *POTGenerator::get_singleton() {
if (!singleton) {
singleton = memnew(POTGenerator);
}
return singleton;
}
POTGenerator::POTGenerator() {
// Scene Node's properties containing strings that will be fetched for translation.
lookup_properties.insert("text");
lookup_properties.insert("hint_tooltip");
lookup_properties.insert("placeholder_text");
lookup_properties.insert("dialog_text");
lookup_properties.insert("filters");
lookup_properties.insert("script");
//Add exception list (to prevent false positives)
//line edit, text edit, richtextlabel
//Set<String> exception_list;
//exception_list.insert("RichTextLabel");
// Regex search pattern templates.
const String dot = "\\.[\\s\\\\]*";
const String str_assign_template = "[\\s\\\\]*=[\\s\\\\]*\"" + text + "\"";
const String first_arg_template = "[\\s\\\\]*\\([\\s\\\\]*\"" + text + "\"[\\s\\S]*?\\)";
const String second_arg_template = "[\\s\\\\]*\\([\\s\\S]+?,[\\s\\\\]*\"" + text + "\"[\\s\\S]*?\\)";
// Common patterns.
patterns.push_back("tr" + first_arg_template);
patterns.push_back(dot + "text" + str_assign_template);
patterns.push_back(dot + "placeholder_text" + str_assign_template);
patterns.push_back(dot + "hint_tooltip" + str_assign_template);
patterns.push_back(dot + "set_text" + first_arg_template);
patterns.push_back(dot + "set_tooltip" + first_arg_template);
patterns.push_back(dot + "set_placeholder" + first_arg_template);
// Tabs and TabContainer API.
patterns.push_back(dot + "set_tab_title" + second_arg_template);
patterns.push_back(dot + "add_tab" + first_arg_template);
// PopupMenu API.
patterns.push_back(dot + "add_check_item" + first_arg_template);
patterns.push_back(dot + "add_icon_check_item" + second_arg_template);
patterns.push_back(dot + "add_icon_item" + second_arg_template);
patterns.push_back(dot + "add_icon_radio_check_item" + second_arg_template);
patterns.push_back(dot + "add_item" + first_arg_template);
patterns.push_back(dot + "add_multistate_item" + first_arg_template);
patterns.push_back(dot + "add_radio_check_item" + first_arg_template);
patterns.push_back(dot + "add_separator" + first_arg_template);
patterns.push_back(dot + "add_submenu_item" + first_arg_template);
patterns.push_back(dot + "set_item_text" + second_arg_template);
//patterns.push_back(dot + "set_item_tooltip" + second_arg_template); //no tr() behind this function. might be bug.
// FileDialog API - special case.
const String fd_text = "((?:[\\s\\\\]*\"(?:[^\"\\\\]|\\\\[\\s\\S])*(?:\"[\\s\\\\]*\\+[\\s\\\\]*\"(?:[^\"\\\\]|\\\\[\\s\\S])*)*\"[\\s\\\\]*,?)*)";
const String packed_string_array = "[\\s\\\\]*PackedStringArray[\\s\\\\]*\\([\\s\\\\]*\\[" + fd_text + "\\][\\s\\\\]*\\)";
file_dialog_patterns.push_back(dot + "add_filter[\\s\\\\]*\\(" + fd_text + "[\\s\\\\]*\\)");
file_dialog_patterns.push_back(dot + "filters[\\s\\\\]*=" + packed_string_array);
file_dialog_patterns.push_back(dot + "set_filters[\\s\\\\]*\\(" + packed_string_array + "[\\s\\\\]*\\)");
}
POTGenerator::~POTGenerator() {
memdelete(singleton);
singleton = nullptr;
}
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