text: /*************************************************************************/
  /*  os.cpp                                                               */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                    http://www.godotengine.org                         */
  /*************************************************************************/
  /* Copyright (c) 2007-2015 Juan Linietsky, Ariel Manzur.                 */
  /*                                                                       */
  /* 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 "os.h"
  #include "os/file_access.h"
  #include <stdarg.h>
  #include "dir_access.h"
  #include "globals.h"
  #include "input.h"
  
  OS* OS::singleton=NULL;
  
  OS* OS::get_singleton() {
  
  	return singleton;
  }
  
  uint32_t OS::get_ticks_msec() const
  { return get_ticks_usec()/1000; }
  
  uint64_t OS::get_splash_tick_msec() const {
  	return _msec_splash;
  }
  uint64_t OS::get_unix_time() const {
  
  	return 0;
  };
  uint64_t OS::get_system_time_msec() const {
  	return 0;
  }
  void OS::debug_break() {
  
  	// something
  };
  
  
  void OS::print_error(const char* p_function,const char* p_file,int p_line,const char *p_code,const char*p_rationale,ErrorType p_type) {
  
  	if (p_rationale && *p_rationale)
  		print("**ERROR**: %s\n ",p_rationale);
  	print("**ERROR**: At: %s:%i:%s() - %s\n",p_file,p_line,p_function,p_code);
  }
  
  void OS::print(const char* p_format, ...) {
  
  
  	va_list argp;
  	va_start(argp, p_format);
  
  	vprint(p_format, argp);
  
  	va_end(argp);
  };
  
  void OS::printerr(const char* p_format, ...) {
  
  	va_list argp;
  	va_start(argp, p_format);
  
  	vprint(p_format, argp, true);
  
  	va_end(argp);
  };
  
  
  void OS::set_iterations_per_second(int p_ips) {
  
  	ips=p_ips;
  }
  int OS::get_iterations_per_second() const {
  
  	return ips;
  }
  
  void OS::set_target_fps(int p_fps) {
  	_target_fps=p_fps>0? p_fps : 0;
  }
  
  float OS::get_target_fps() const {
  	return _target_fps;
  }
  
  void OS::set_low_processor_usage_mode(bool p_enabled) {
  
  	low_processor_usage_mode=p_enabled;
  }
  
  bool OS::is_in_low_processor_usage_mode() const {
  
  	return low_processor_usage_mode;
  }
  
  void OS::set_clipboard(const String& p_text) {
  
  	_local_clipboard=p_text;
  }
  String OS::get_clipboard() const {
  
  	return _local_clipboard;
  }
  
  String OS::get_executable_path() const {
  
  	return _execpath;
  }
  
  int OS::get_process_ID() const {
  
  	return -1;
  };
  
  uint64_t OS::get_frames_drawn() {
  
  	return frames_drawn;
  }
  
  bool OS::is_stdout_verbose() const {
  
  	return _verbose_stdout;
  }
  
  void OS::set_last_error(const char* p_error) {
  
  	GLOBAL_LOCK_FUNCTION
  	if (p_error==NULL)
  		p_error="Unknown Error";
  
  	if (last_error)
  		memfree(last_error);
  	last_error=NULL;
  	int len =0;
  	while(p_error[len++]);
  
  	last_error=(char*)memalloc(len);
  	for(int i=0;i<len;i++)
  		last_error[i]=p_error[i];
  
  }
  
  const char *OS::get_last_error() const {
  	GLOBAL_LOCK_FUNCTION
  	return last_error?last_error:"";
  }
  
  void OS::dump_memory_to_file(const char* p_file) {
  
  	Memory::dump_static_mem_to_file(p_file);
  }
  
  static FileAccess *_OSPRF=NULL;
  
  static void _OS_printres(Object *p_obj) {
  
  	Resource *res = p_obj->cast_to<Resource>();
  	if (!res)
  		return;
  
  	String str = itos(res->get_instance_ID())+String(res->get_type())+":"+String(res->get_name())+" - "+res->get_path();
  	if (_OSPRF)
  		_OSPRF->store_line(str);
  	else
  		print_line(str);
  
  }
  
  bool OS::has_virtual_keyboard() const {
  
  	return false;
  }
  void OS::show_virtual_keyboard(const String& p_existing_text,const Rect2& p_screen_rect) {
  
  
  
  }
  
  void OS::hide_virtual_keyboard(){
  
  
  }
  
  
  void OS::print_all_resources(String p_to_file) {
  
  	ERR_FAIL_COND(p_to_file!="" && _OSPRF);
  	if (p_to_file!="") {
  
  		Error err;
  		_OSPRF=FileAccess::open(p_to_file,FileAccess::WRITE,&err);
  		if (err!=OK) {
  			_OSPRF=NULL;
  			ERR_FAIL_COND(err!=OK);
  		}
  	}
  
  	ObjectDB::debug_objects(_OS_printres);
  
  	if (p_to_file!="") {
  
  		if (_OSPRF)
  			memdelete(_OSPRF);
  		_OSPRF=NULL;
  	}
  }
  
  void OS::print_resources_in_use(bool p_short) {
  
  
  	ResourceCache::dump(NULL,p_short);
  }
  
  void OS::dump_resources_to_file(const char* p_file) {
  
  	ResourceCache::dump(p_file);
  }
  
  
  void OS::clear_last_error() {
  
  	GLOBAL_LOCK_FUNCTION
  	if (last_error)
  		memfree(last_error);
  	last_error=NULL;
  }
  void OS::set_frame_delay(uint32_t p_msec) {
  
  	_frame_delay=p_msec;
  }
  
  uint32_t OS::get_frame_delay() const {
  
  	return _frame_delay;
  }
  
  void OS::set_no_window_mode(bool p_enable) {
  
  	_no_window=p_enable;
  }
  
  bool OS::is_no_window_mode_enabled() const {
  
  	return _no_window;
  }
  
  int OS::get_exit_code() const {
  
  	return _exit_code;
  }
  void OS::set_exit_code(int p_code) {
  
  	_exit_code=p_code;
  }
  
  String OS::get_locale() const {
  
  	return "en";
  }
  
  String OS::get_resource_dir() const {
  
  	return Globals::get_singleton()->get_resource_path();
  }
  
  
  String OS::get_system_dir(SystemDir p_dir) const {
  
  	return ".";
  }
  
  String OS::get_data_dir() const {
  
  	return ".";
  };
  
  Error OS::shell_open(String p_uri) {
  	return ERR_UNAVAILABLE;
  };
  
  // implement these with the canvas?
  Error OS::dialog_show(String p_title, String p_description, Vector<String> p_buttons, Object* p_obj, String p_callback) {
  
  	while (true) {
  
  		print("%ls\n--------\n%ls\n", p_title.c_str(), p_description.c_str());
  		for (int i=0; i<p_buttons.size(); i++) {
  			if (i>0) print(", ");
  			print("%i=%ls", i+1, p_buttons[i].c_str());
  		};
  		print("\n");
  		String res = get_stdin_string().strip_edges();
  		if (!res.is_numeric())
  			continue;
  		int n = res.to_int();
  		if (n < 0 || n >= p_buttons.size())
  			continue;
  		if (p_obj && p_callback != "")
  			p_obj->call_deferred(p_callback, n);
  		break;
  	};
  	return OK;
  };
  
  Error OS::dialog_input_text(String p_title, String p_description, String p_partial, Object* p_obj, String p_callback)  {
  
  	ERR_FAIL_COND_V(!p_obj, FAILED);
  	ERR_FAIL_COND_V(p_callback == "", FAILED);
  	print("%ls\n---------\n%ls\n[%ls]:\n", p_title.c_str(), p_description.c_str(), p_partial.c_str());
  
  	String res = get_stdin_string().strip_edges();
  	bool success = true;
  	if (res == "") {
  		res = p_partial;
  	};
  
  	p_obj->call_deferred(p_callback, success, res);
  
  	return OK;
  };
  
  int OS::get_static_memory_usage() const {
  
  	return Memory::get_static_mem_usage();
  }
  int OS::get_dynamic_memory_usage() const{
  
  	return Memory::get_dynamic_mem_usage();
  }
  
  int OS::get_static_memory_peak_usage() const {
  
  	return Memory::get_static_mem_max_usage();
  }
  
  Error OS::set_cwd(const String& p_cwd) {
  
  	return ERR_CANT_OPEN;
  }
  
  bool OS::has_touchscreen_ui_hint() const {
  
  	//return false;
  	return Input::get_singleton() && Input::get_singleton()->is_emulating_touchscreen();
  }
  
  int OS::get_free_static_memory() const {
  
  	return Memory::get_static_mem_available();
  }
  
  void OS::yield() {
  
  
  }
  
  void OS::set_screen_orientation(ScreenOrientation p_orientation) {
  
  	_orientation=p_orientation;
  }
  
  OS::ScreenOrientation OS::get_screen_orientation() const {
  
  	return (OS::ScreenOrientation)_orientation;
  }
  
  
  void OS::_ensure_data_dir() {
  
  	String dd = get_data_dir();
  	DirAccess *da = DirAccess::open(dd);
  	if (da) {
  		memdelete(da);
  		return;
  	}
  
  	da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
  	Error err = da->make_dir_recursive(dd);
  	if (err!=OK) {
  		ERR_EXPLAIN("Error attempting to create data dir: "+dd);
  	}
  	ERR_FAIL_COND(err!=OK);
  
  	memdelete(da);
  
  
  }
  
  void OS::set_icon(const Image& p_icon) {
  
  
  }
  
  String OS::get_model_name() const {
  
      return "GenericDevice";
  }
  
  
  void OS::set_cmdline(const char* p_execpath, const List<String>& p_args) {
  
  	_execpath = p_execpath;
  	_cmdline = p_args;
  };
  
  void OS::release_rendering_thread() {
  
  
  }
  
  void OS::make_rendering_thread() {
  
  
  }
  
  void OS::swap_buffers() {
  
  }
  
  String OS::get_unique_ID() const {
  
  	ERR_FAIL_V("");
  }
  
  int OS::get_processor_count() const {
  
  	return 1;
  }
  
  Error OS::native_video_play(String p_path, float p_volume, String p_audio_track, String p_subtitle_track) {
  
  	return FAILED;
  };
  
  bool OS::native_video_is_playing() const {
  
  	return false;
  };
  
  void OS::native_video_pause() {
  
  };
  
  void OS::native_video_stop() {
  
  };
  
  void OS::set_mouse_mode(MouseMode p_mode) {
  
  }
  
  bool OS::can_use_threads() const {
  
  #ifdef NO_THREADS
  	return false;
  #else
  	return true;
  #endif
  }
  
  OS::MouseMode OS::get_mouse_mode() const{
  
  	return MOUSE_MODE_VISIBLE;
  }
  
  void OS::set_time_scale(float p_scale) {
  
  	_time_scale=p_scale;
  }
  
  OS::LatinKeyboardVariant OS::get_latin_keyboard_variant() const {
  
  	return LATIN_KEYBOARD_QWERTY;
  }
  
  float OS::get_time_scale() const {
  
  	return _time_scale;
  }
  
  
  OS::OS() {
  	last_error=NULL;
  	frames_drawn=0;
  	singleton=this;
  	ips=60;
  	low_processor_usage_mode=false;
  	_verbose_stdout=false;
  	_frame_delay=0;
  	_no_window=false;
  	_exit_code=0;
  	_orientation=SCREEN_LANDSCAPE;
  	_fps=1;
  	_target_fps=0;
  	_render_thread_mode=RENDER_THREAD_SAFE;
  	_time_scale=1.0;
  	Math::seed(1234567);
  }
  
  
  OS::~OS() {
  
  	singleton=NULL;
  }
  
  
  