godot/core/io/resource_importer.cpp
2020-12-09 12:12:36 +01:00

414 lines
12 KiB
C++

/*************************************************************************/
/* resource_importer.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 "resource_importer.h"
#include "core/config/project_settings.h"
#include "core/os/os.h"
#include "core/variant/variant_parser.h"
bool ResourceFormatImporter::SortImporterByName::operator()(const Ref<ResourceImporter> &p_a, const Ref<ResourceImporter> &p_b) const {
return p_a->get_importer_name() < p_b->get_importer_name();
}
Error ResourceFormatImporter::_get_path_and_type(const String &p_path, PathAndType &r_path_and_type, bool *r_valid) const {
Error err;
FileAccess *f = FileAccess::open(p_path + ".import", FileAccess::READ, &err);
if (!f) {
if (r_valid) {
*r_valid = false;
}
return err;
}
VariantParser::StreamFile stream;
stream.f = f;
String assign;
Variant value;
VariantParser::Tag next_tag;
if (r_valid) {
*r_valid = true;
}
int lines = 0;
String error_text;
bool path_found = false; //first match must have priority
while (true) {
assign = Variant();
next_tag.fields.clear();
next_tag.name = String();
err = VariantParser::parse_tag_assign_eof(&stream, lines, error_text, next_tag, assign, value, nullptr, true);
if (err == ERR_FILE_EOF) {
memdelete(f);
return OK;
} else if (err != OK) {
ERR_PRINT("ResourceFormatImporter::load - " + p_path + ".import:" + itos(lines) + " error: " + error_text);
memdelete(f);
return err;
}
if (assign != String()) {
if (!path_found && assign.begins_with("path.") && r_path_and_type.path == String()) {
String feature = assign.get_slicec('.', 1);
if (OS::get_singleton()->has_feature(feature)) {
r_path_and_type.path = value;
path_found = true; //first match must have priority
}
} else if (!path_found && assign == "path") {
r_path_and_type.path = value;
path_found = true; //first match must have priority
} else if (assign == "type") {
r_path_and_type.type = ClassDB::get_compatibility_remapped_class(value);
} else if (assign == "importer") {
r_path_and_type.importer = value;
} else if (assign == "group_file") {
r_path_and_type.group_file = value;
} else if (assign == "metadata") {
r_path_and_type.metadata = value;
} else if (assign == "valid") {
if (r_valid) {
*r_valid = value;
}
}
} else if (next_tag.name != "remap") {
break;
}
}
memdelete(f);
if (r_path_and_type.path == String() || r_path_and_type.type == String()) {
return ERR_FILE_CORRUPT;
}
return OK;
}
RES ResourceFormatImporter::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_use_sub_threads, float *r_progress, bool p_no_cache) {
PathAndType pat;
Error err = _get_path_and_type(p_path, pat);
if (err != OK) {
if (r_error) {
*r_error = err;
}
return RES();
}
RES res = ResourceLoader::_load(pat.path, p_path, pat.type, p_no_cache, r_error, p_use_sub_threads, r_progress);
#ifdef TOOLS_ENABLED
if (res.is_valid()) {
res->set_import_last_modified_time(res->get_last_modified_time()); //pass this, if used
res->set_import_path(pat.path);
}
#endif
return res;
}
void ResourceFormatImporter::get_recognized_extensions(List<String> *p_extensions) const {
Set<String> found;
for (int i = 0; i < importers.size(); i++) {
List<String> local_exts;
importers[i]->get_recognized_extensions(&local_exts);
for (List<String>::Element *F = local_exts.front(); F; F = F->next()) {
if (!found.has(F->get())) {
p_extensions->push_back(F->get());
found.insert(F->get());
}
}
}
}
void ResourceFormatImporter::get_recognized_extensions_for_type(const String &p_type, List<String> *p_extensions) const {
if (p_type == "") {
get_recognized_extensions(p_extensions);
return;
}
Set<String> found;
for (int i = 0; i < importers.size(); i++) {
String res_type = importers[i]->get_resource_type();
if (res_type == String()) {
continue;
}
if (!ClassDB::is_parent_class(res_type, p_type)) {
continue;
}
List<String> local_exts;
importers[i]->get_recognized_extensions(&local_exts);
for (List<String>::Element *F = local_exts.front(); F; F = F->next()) {
if (!found.has(F->get())) {
p_extensions->push_back(F->get());
found.insert(F->get());
}
}
}
}
bool ResourceFormatImporter::exists(const String &p_path) const {
return FileAccess::exists(p_path + ".import");
}
bool ResourceFormatImporter::recognize_path(const String &p_path, const String &p_for_type) const {
return FileAccess::exists(p_path + ".import");
}
int ResourceFormatImporter::get_import_order(const String &p_path) const {
Ref<ResourceImporter> importer;
if (FileAccess::exists(p_path + ".import")) {
PathAndType pat;
Error err = _get_path_and_type(p_path, pat);
if (err == OK) {
importer = get_importer_by_name(pat.importer);
}
} else {
importer = get_importer_by_extension(p_path.get_extension().to_lower());
}
if (importer.is_valid()) {
return importer->get_import_order();
}
return 0;
}
bool ResourceFormatImporter::handles_type(const String &p_type) const {
for (int i = 0; i < importers.size(); i++) {
String res_type = importers[i]->get_resource_type();
if (res_type == String()) {
continue;
}
if (ClassDB::is_parent_class(res_type, p_type)) {
return true;
}
}
return true;
}
String ResourceFormatImporter::get_internal_resource_path(const String &p_path) const {
PathAndType pat;
Error err = _get_path_and_type(p_path, pat);
if (err != OK) {
return String();
}
return pat.path;
}
void ResourceFormatImporter::get_internal_resource_path_list(const String &p_path, List<String> *r_paths) {
Error err;
FileAccess *f = FileAccess::open(p_path + ".import", FileAccess::READ, &err);
if (!f) {
return;
}
VariantParser::StreamFile stream;
stream.f = f;
String assign;
Variant value;
VariantParser::Tag next_tag;
int lines = 0;
String error_text;
while (true) {
assign = Variant();
next_tag.fields.clear();
next_tag.name = String();
err = VariantParser::parse_tag_assign_eof(&stream, lines, error_text, next_tag, assign, value, nullptr, true);
if (err == ERR_FILE_EOF) {
memdelete(f);
return;
} else if (err != OK) {
ERR_PRINT("ResourceFormatImporter::get_internal_resource_path_list - " + p_path + ".import:" + itos(lines) + " error: " + error_text);
memdelete(f);
return;
}
if (assign != String()) {
if (assign.begins_with("path.")) {
r_paths->push_back(value);
} else if (assign == "path") {
r_paths->push_back(value);
}
} else if (next_tag.name != "remap") {
break;
}
}
memdelete(f);
}
String ResourceFormatImporter::get_import_group_file(const String &p_path) const {
bool valid = true;
PathAndType pat;
_get_path_and_type(p_path, pat, &valid);
return valid ? pat.group_file : String();
}
bool ResourceFormatImporter::is_import_valid(const String &p_path) const {
bool valid = true;
PathAndType pat;
_get_path_and_type(p_path, pat, &valid);
return valid;
}
String ResourceFormatImporter::get_resource_type(const String &p_path) const {
PathAndType pat;
Error err = _get_path_and_type(p_path, pat);
if (err != OK) {
return "";
}
return pat.type;
}
Variant ResourceFormatImporter::get_resource_metadata(const String &p_path) const {
PathAndType pat;
Error err = _get_path_and_type(p_path, pat);
if (err != OK) {
return Variant();
}
return pat.metadata;
}
void ResourceFormatImporter::get_dependencies(const String &p_path, List<String> *p_dependencies, bool p_add_types) {
PathAndType pat;
Error err = _get_path_and_type(p_path, pat);
if (err != OK) {
return;
}
ResourceLoader::get_dependencies(pat.path, p_dependencies, p_add_types);
}
Ref<ResourceImporter> ResourceFormatImporter::get_importer_by_name(const String &p_name) const {
for (int i = 0; i < importers.size(); i++) {
if (importers[i]->get_importer_name() == p_name) {
return importers[i];
}
}
return Ref<ResourceImporter>();
}
void ResourceFormatImporter::get_importers_for_extension(const String &p_extension, List<Ref<ResourceImporter>> *r_importers) {
for (int i = 0; i < importers.size(); i++) {
List<String> local_exts;
importers[i]->get_recognized_extensions(&local_exts);
for (List<String>::Element *F = local_exts.front(); F; F = F->next()) {
if (p_extension.to_lower() == F->get()) {
r_importers->push_back(importers[i]);
}
}
}
}
Ref<ResourceImporter> ResourceFormatImporter::get_importer_by_extension(const String &p_extension) const {
Ref<ResourceImporter> importer;
float priority = 0;
for (int i = 0; i < importers.size(); i++) {
List<String> local_exts;
importers[i]->get_recognized_extensions(&local_exts);
for (List<String>::Element *F = local_exts.front(); F; F = F->next()) {
if (p_extension.to_lower() == F->get() && importers[i]->get_priority() > priority) {
importer = importers[i];
priority = importers[i]->get_priority();
}
}
}
return importer;
}
String ResourceFormatImporter::get_import_base_path(const String &p_for_file) const {
return ProjectSettings::IMPORTED_FILES_PATH.plus_file(p_for_file.get_file() + "-" + p_for_file.md5_text());
}
bool ResourceFormatImporter::are_import_settings_valid(const String &p_path) const {
bool valid = true;
PathAndType pat;
_get_path_and_type(p_path, pat, &valid);
if (!valid) {
return false;
}
for (int i = 0; i < importers.size(); i++) {
if (importers[i]->get_importer_name() == pat.importer) {
if (!importers[i]->are_import_settings_valid(p_path)) { //importer thinks this is not valid
return false;
}
}
}
return true;
}
String ResourceFormatImporter::get_import_settings_hash() const {
Vector<Ref<ResourceImporter>> sorted_importers = importers;
sorted_importers.sort_custom<SortImporterByName>();
String hash;
for (int i = 0; i < sorted_importers.size(); i++) {
hash += ":" + sorted_importers[i]->get_importer_name() + ":" + sorted_importers[i]->get_import_settings_string();
}
return hash.md5_text();
}
ResourceFormatImporter *ResourceFormatImporter::singleton = nullptr;
ResourceFormatImporter::ResourceFormatImporter() {
singleton = this;
}