godot/platform/javascript/os_javascript.cpp

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/*************************************************************************/
/* os_javascript.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
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/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
/* 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. */
/*************************************************************************/
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#include "os_javascript.h"
#include "core/debugger/engine_debugger.h"
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#include "drivers/unix/dir_access_unix.h"
#include "drivers/unix/file_access_unix.h"
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#include "main/main.h"
#include "platform/javascript/display_server_javascript.h"
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#include "modules/modules_enabled.gen.h"
#ifdef MODULE_WEBSOCKET_ENABLED
#include "modules/websocket/remote_debugger_peer_websocket.h"
#endif
#include <dlfcn.h>
#include <emscripten.h>
#include <stdlib.h>
#include "godot_js.h"
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// Lifecycle
void OS_JavaScript::initialize() {
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OS_Unix::initialize_core();
DisplayServerJavaScript::register_javascript_driver();
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#ifdef MODULE_WEBSOCKET_ENABLED
EngineDebugger::register_uri_handler("ws://", RemoteDebuggerPeerWebSocket::create);
EngineDebugger::register_uri_handler("wss://", RemoteDebuggerPeerWebSocket::create);
#endif
}
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void OS_JavaScript::resume_audio() {
if (audio_driver_javascript) {
audio_driver_javascript->resume();
}
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}
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void OS_JavaScript::set_main_loop(MainLoop *p_main_loop) {
main_loop = p_main_loop;
}
MainLoop *OS_JavaScript::get_main_loop() const {
return main_loop;
}
void OS_JavaScript::fs_sync_callback() {
get_singleton()->idb_is_syncing = false;
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}
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bool OS_JavaScript::main_loop_iterate() {
if (is_userfs_persistent() && idb_needs_sync && !idb_is_syncing) {
idb_is_syncing = true;
idb_needs_sync = false;
godot_js_os_fs_sync(&fs_sync_callback);
}
DisplayServer::get_singleton()->process_events();
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return Main::iteration();
}
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void OS_JavaScript::delete_main_loop() {
if (main_loop) {
memdelete(main_loop);
}
main_loop = nullptr;
}
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void OS_JavaScript::finalize() {
delete_main_loop();
if (audio_driver_javascript) {
memdelete(audio_driver_javascript);
audio_driver_javascript = nullptr;
}
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}
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// Miscellaneous
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Error OS_JavaScript::execute(const String &p_path, const List<String> &p_arguments, String *r_pipe, int *r_exitcode, bool read_stderr, Mutex *p_pipe_mutex) {
return create_process(p_path, p_arguments);
}
Error OS_JavaScript::create_process(const String &p_path, const List<String> &p_arguments, ProcessID *r_child_id) {
Array args;
for (const List<String>::Element *E = p_arguments.front(); E; E = E->next()) {
args.push_back(E->get());
}
String json_args = Variant(args).to_json_string();
int failed = godot_js_os_execute(json_args.utf8().get_data());
ERR_FAIL_COND_V_MSG(failed, ERR_UNAVAILABLE, "OS::execute() or create_process() must be implemented in JavaScript via 'engine.setOnExecute' if required.");
return OK;
}
Error OS_JavaScript::kill(const ProcessID &p_pid) {
ERR_FAIL_V_MSG(ERR_UNAVAILABLE, "OS::kill() is not available on the HTML5 platform.");
}
int OS_JavaScript::get_process_id() const {
ERR_FAIL_V_MSG(0, "OS::get_process_id() is not available on the HTML5 platform.");
}
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int OS_JavaScript::get_processor_count() const {
return godot_js_os_hw_concurrency_get();
}
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bool OS_JavaScript::_check_internal_feature_support(const String &p_feature) {
if (p_feature == "HTML5" || p_feature == "web") {
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return true;
}
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#ifdef JAVASCRIPT_EVAL_ENABLED
if (p_feature == "JavaScript") {
return true;
}
#endif
#ifndef NO_THREADS
if (p_feature == "threads") {
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return true;
}
#endif
#if WASM_GDNATIVE
if (p_feature == "wasm32") {
return true;
}
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#endif
return false;
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}
String OS_JavaScript::get_executable_path() const {
return OS::get_executable_path();
}
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Error OS_JavaScript::shell_open(String p_uri) {
// Open URI in a new tab, browser will deal with it by protocol.
godot_js_os_shell_open(p_uri.utf8().get_data());
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return OK;
}
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String OS_JavaScript::get_name() const {
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return "HTML5";
}
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String OS_JavaScript::get_user_data_dir() const {
return "/userfs";
};
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String OS_JavaScript::get_cache_path() const {
return "/home/web_user/.cache";
}
String OS_JavaScript::get_config_path() const {
return "/home/web_user/.config";
}
String OS_JavaScript::get_data_path() const {
return "/home/web_user/.local/share";
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}
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void OS_JavaScript::file_access_close_callback(const String &p_file, int p_flags) {
OS_JavaScript *os = OS_JavaScript::get_singleton();
if (!(os->is_userfs_persistent() && (p_flags & FileAccess::WRITE))) {
return; // FS persistence is not working or we are not writing.
}
bool is_file_persistent = p_file.begins_with("/userfs");
#ifdef TOOLS_ENABLED
// Hack for editor persistence (can we track).
is_file_persistent = is_file_persistent || p_file.begins_with("/home/web_user/");
#endif
if (is_file_persistent) {
os->idb_needs_sync = true;
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}
}
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bool OS_JavaScript::is_userfs_persistent() const {
return idb_available;
}
Error OS_JavaScript::open_dynamic_library(const String p_path, void *&p_library_handle, bool p_also_set_library_path) {
String path = p_path.get_file();
p_library_handle = dlopen(path.utf8().get_data(), RTLD_NOW);
ERR_FAIL_COND_V_MSG(!p_library_handle, ERR_CANT_OPEN, "Can't open dynamic library: " + p_path + ". Error: " + dlerror());
return OK;
}
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OS_JavaScript *OS_JavaScript::get_singleton() {
return static_cast<OS_JavaScript *>(OS::get_singleton());
}
void OS_JavaScript::initialize_joypads() {
}
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OS_JavaScript::OS_JavaScript() {
char locale_ptr[16];
godot_js_config_locale_get(locale_ptr, 16);
setenv("LANG", locale_ptr, true);
if (AudioDriverJavaScript::is_available()) {
audio_driver_javascript = memnew(AudioDriverJavaScript);
AudioDriverManager::add_driver(audio_driver_javascript);
}
idb_available = godot_js_os_fs_is_persistent();
Vector<Logger *> loggers;
loggers.push_back(memnew(StdLogger));
_set_logger(memnew(CompositeLogger(loggers)));
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FileAccessUnix::close_notification_func = file_access_close_callback;
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}