/*************************************************************************/ /* translation_po.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2021 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 "translation_po.h" #include "core/io/file_access.h" #ifdef DEBUG_TRANSLATION_PO void TranslationPO::print_translation_map() { Error err; FileAccess *file = FileAccess::open("translation_map_print_test.txt", FileAccess::WRITE, &err); if (err != OK) { ERR_PRINT("Failed to open translation_map_print_test.txt"); return; } file->store_line("NPlural : " + String::num_int64(this->get_plural_forms())); file->store_line("Plural rule : " + this->get_plural_rule()); file->store_line(""); List<StringName> context_l; translation_map.get_key_list(&context_l); for (const StringName &ctx : context_l) { file->store_line(" ===== Context: " + String::utf8(String(ctx).utf8()) + " ===== "); const HashMap<StringName, Vector<StringName>> &inner_map = translation_map[ctx]; List<StringName> id_l; inner_map.get_key_list(&id_l); for (List<StringName>::Element *E2 = id_l.front(); E2; E2 = E2->next()) { StringName id = E2->get(); file->store_line("msgid: " + String::utf8(String(id).utf8())); for (int i = 0; i < inner_map[id].size(); i++) { file->store_line("msgstr[" + String::num_int64(i) + "]: " + String::utf8(String(inner_map[id][i]).utf8())); } file->store_line(""); } } file->close(); } #endif Dictionary TranslationPO::_get_messages() const { // Return translation_map as a Dictionary. Dictionary d; List<StringName> context_l; translation_map.get_key_list(&context_l); for (const StringName &ctx : context_l) { const HashMap<StringName, Vector<StringName>> &id_str_map = translation_map[ctx]; Dictionary d2; List<StringName> id_l; id_str_map.get_key_list(&id_l); // Save list of id and strs associated with a context in a temporary dictionary. for (List<StringName>::Element *E2 = id_l.front(); E2; E2 = E2->next()) { StringName id = E2->get(); d2[id] = id_str_map[id]; } d[ctx] = d2; } return d; } void TranslationPO::_set_messages(const Dictionary &p_messages) { // Construct translation_map from a Dictionary. List<Variant> context_l; p_messages.get_key_list(&context_l); for (const Variant &ctx : context_l) { const Dictionary &id_str_map = p_messages[ctx]; HashMap<StringName, Vector<StringName>> temp_map; List<Variant> id_l; id_str_map.get_key_list(&id_l); for (List<Variant>::Element *E2 = id_l.front(); E2; E2 = E2->next()) { StringName id = E2->get(); temp_map[id] = id_str_map[id]; } translation_map[ctx] = temp_map; } } Vector<String> TranslationPO::_get_message_list() const { // Return all keys in translation_map. List<StringName> msgs; get_message_list(&msgs); Vector<String> v; for (const StringName &E : msgs) { v.push_back(E); } return v; } int TranslationPO::_get_plural_index(int p_n) const { // Get a number between [0;number of plural forms). input_val.clear(); input_val.push_back(p_n); Variant result; for (int i = 0; i < equi_tests.size(); i++) { Error err = expr->parse(equi_tests[i], input_name); ERR_FAIL_COND_V_MSG(err != OK, 0, "Cannot parse expression. Error: " + expr->get_error_text()); result = expr->execute(input_val); ERR_FAIL_COND_V_MSG(expr->has_execute_failed(), 0, "Cannot evaluate expression."); // Last expression. Variant result will either map to a bool or an integer, in both cases returning it will give the correct plural index. if (i + 1 == equi_tests.size()) { return result; } if (bool(result)) { return i; } } ERR_FAIL_V_MSG(0, "Unexpected. Function should have returned. Please report this bug."); } void TranslationPO::_cache_plural_tests(const String &p_plural_rule) { // Some examples of p_plural_rule passed in can have the form: // "n==0 ? 0 : n==1 ? 1 : n==2 ? 2 : n%100>=3 && n%100<=10 ? 3 : n%100>=11 && n%100<=99 ? 4 : 5" (Arabic) // "n >= 2" (French) // When evaluating the last, especially careful with this one. // "n != 1" (English) int first_ques_mark = p_plural_rule.find("?"); if (first_ques_mark == -1) { equi_tests.push_back(p_plural_rule.strip_edges()); return; } String equi_test = p_plural_rule.substr(0, first_ques_mark).strip_edges(); equi_tests.push_back(equi_test); String after_colon = p_plural_rule.substr(p_plural_rule.find(":") + 1, p_plural_rule.length()); _cache_plural_tests(after_colon); } void TranslationPO::set_plural_rule(const String &p_plural_rule) { // Set plural_forms and plural_rule. // p_plural_rule passed in has the form "Plural-Forms: nplurals=2; plural=(n >= 2);". int first_semi_col = p_plural_rule.find(";"); plural_forms = p_plural_rule.substr(p_plural_rule.find("=") + 1, first_semi_col - (p_plural_rule.find("=") + 1)).to_int(); int expression_start = p_plural_rule.find("=", first_semi_col) + 1; int second_semi_col = p_plural_rule.rfind(";"); plural_rule = p_plural_rule.substr(expression_start, second_semi_col - expression_start); // Setup the cache to make evaluating plural rule faster later on. plural_rule = plural_rule.replacen("(", ""); plural_rule = plural_rule.replacen(")", ""); _cache_plural_tests(plural_rule); expr.instantiate(); input_name.push_back("n"); } void TranslationPO::add_message(const StringName &p_src_text, const StringName &p_xlated_text, const StringName &p_context) { HashMap<StringName, Vector<StringName>> &map_id_str = translation_map[p_context]; if (map_id_str.has(p_src_text)) { WARN_PRINT("Double translations for \"" + String(p_src_text) + "\" under the same context \"" + String(p_context) + "\" for locale \"" + get_locale() + "\".\nThere should only be one unique translation for a given string under the same context."); map_id_str[p_src_text].set(0, p_xlated_text); } else { map_id_str[p_src_text].push_back(p_xlated_text); } } void TranslationPO::add_plural_message(const StringName &p_src_text, const Vector<String> &p_plural_xlated_texts, const StringName &p_context) { ERR_FAIL_COND_MSG(p_plural_xlated_texts.size() != plural_forms, "Trying to add plural texts that don't match the required number of plural forms for locale \"" + get_locale() + "\""); HashMap<StringName, Vector<StringName>> &map_id_str = translation_map[p_context]; if (map_id_str.has(p_src_text)) { WARN_PRINT("Double translations for \"" + p_src_text + "\" under the same context \"" + p_context + "\" for locale " + get_locale() + ".\nThere should only be one unique translation for a given string under the same context."); map_id_str[p_src_text].clear(); } for (int i = 0; i < p_plural_xlated_texts.size(); i++) { map_id_str[p_src_text].push_back(p_plural_xlated_texts[i]); } } int TranslationPO::get_plural_forms() const { return plural_forms; } String TranslationPO::get_plural_rule() const { return plural_rule; } StringName TranslationPO::get_message(const StringName &p_src_text, const StringName &p_context) const { if (!translation_map.has(p_context) || !translation_map[p_context].has(p_src_text)) { return StringName(); } ERR_FAIL_COND_V_MSG(translation_map[p_context][p_src_text].is_empty(), StringName(), "Source text \"" + String(p_src_text) + "\" is registered but doesn't have a translation. Please report this bug."); return translation_map[p_context][p_src_text][0]; } StringName TranslationPO::get_plural_message(const StringName &p_src_text, const StringName &p_plural_text, int p_n, const StringName &p_context) const { ERR_FAIL_COND_V_MSG(p_n < 0, StringName(), "N passed into translation to get a plural message should not be negative. For negative numbers, use singular translation please. Search \"gettext PO Plural Forms\" online for the documentation on translating negative numbers."); // If the query is the same as last time, return the cached result. if (p_n == last_plural_n && p_context == last_plural_context && p_src_text == last_plural_key) { return translation_map[p_context][p_src_text][last_plural_mapped_index]; } if (!translation_map.has(p_context) || !translation_map[p_context].has(p_src_text)) { return StringName(); } ERR_FAIL_COND_V_MSG(translation_map[p_context][p_src_text].is_empty(), StringName(), "Source text \"" + String(p_src_text) + "\" is registered but doesn't have a translation. Please report this bug."); if (translation_map[p_context][p_src_text].size() == 1) { WARN_PRINT("Source string \"" + String(p_src_text) + "\" doesn't have plural translations. Use singular translation API for such as tr(), TTR() to translate \"" + String(p_src_text) + "\""); return translation_map[p_context][p_src_text][0]; } int plural_index = _get_plural_index(p_n); ERR_FAIL_COND_V_MSG(plural_index < 0 || translation_map[p_context][p_src_text].size() < plural_index + 1, StringName(), "Plural index returned or number of plural translations is not valid. Please report this bug."); // Cache result so that if the next entry is the same, we can return directly. // _get_plural_index(p_n) can get very costly, especially when evaluating long plural-rule (Arabic) last_plural_key = p_src_text; last_plural_context = p_context; last_plural_n = p_n; last_plural_mapped_index = plural_index; return translation_map[p_context][p_src_text][plural_index]; } void TranslationPO::erase_message(const StringName &p_src_text, const StringName &p_context) { if (!translation_map.has(p_context)) { return; } translation_map[p_context].erase(p_src_text); } void TranslationPO::get_message_list(List<StringName> *r_messages) const { // OptimizedTranslation uses this function to get the list of msgid. // Return all the keys of translation_map under "" context. List<StringName> context_l; translation_map.get_key_list(&context_l); for (const StringName &E : context_l) { if (String(E) != "") { continue; } List<StringName> msgid_l; translation_map[E].get_key_list(&msgid_l); for (List<StringName>::Element *E2 = msgid_l.front(); E2; E2 = E2->next()) { r_messages->push_back(E2->get()); } } } int TranslationPO::get_message_count() const { List<StringName> context_l; translation_map.get_key_list(&context_l); int count = 0; for (const StringName &E : context_l) { count += translation_map[E].size(); } return count; } void TranslationPO::_bind_methods() { ClassDB::bind_method(D_METHOD("get_plural_forms"), &TranslationPO::get_plural_forms); ClassDB::bind_method(D_METHOD("get_plural_rule"), &TranslationPO::get_plural_rule); }