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/***************************************************************************

    emuopts.c

    Options file and command line management.

****************************************************************************

    Copyright Aaron Giles
    All rights reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are
    met:

        * Redistributions of source code must retain the above copyright
          notice, this list of conditions and the following disclaimer.
        * Redistributions in binary form must reproduce the above copyright
          notice, this list of conditions and the following disclaimer in
          the documentation and/or other materials provided with the
          distribution.
        * Neither the name 'MAME' nor the names of its contributors may be
          used to endorse or promote products derived from this software
          without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR
    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT,
    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
    IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.

***************************************************************************/

#include "emu.h"
#include "emuopts.h"

#include <ctype.h>



//**************************************************************************
//  CORE EMULATOR OPTIONS
//**************************************************************************

const options_entry emu_options::s_option_entries[] =
{
	// unadorned options - only a single one supported at the moment
	{ OPTION_SYSTEMNAME,                                 NULL,        OPTION_STRING,     NULL },

	// config options
	{ NULL,                                              NULL,        OPTION_HEADER,     "CORE CONFIGURATION OPTIONS" },
	{ OPTION_READCONFIG ";rc",                           "1",         OPTION_BOOLEAN,    "enable loading of configuration files" },
	{ OPTION_WRITECONFIG ";wc",                          "0",         OPTION_BOOLEAN,    "writes configuration to (driver).ini on exit" },

	// seach path options
	{ NULL,                                              NULL,        OPTION_HEADER,     "CORE SEARCH PATH OPTIONS" },
	{ OPTION_MEDIAPATH ";rp;biospath;bp",                "roms",      OPTION_STRING,     "path to ROMsets and hard disk images" },
	{ OPTION_HASHPATH ";hash_directory;hash",            "hash",      OPTION_STRING,     "path to hash files" },
	{ OPTION_SAMPLEPATH ";sp",                           "samples",   OPTION_STRING,     "path to samplesets" },
	{ OPTION_ARTPATH,                                    "artwork",   OPTION_STRING,     "path to artwork files" },
	{ OPTION_CTRLRPATH,                                  "ctrlr",     OPTION_STRING,     "path to controller definitions" },
	{ OPTION_INIPATH,                                    ".;ini",     OPTION_STRING,     "path to ini files" },
	{ OPTION_FONTPATH,                                   ".",         OPTION_STRING,     "path to font files" },
	{ OPTION_CHEATPATH,                                  "cheat",     OPTION_STRING,     "path to cheat files" },
	{ OPTION_CROSSHAIRPATH,                              "crosshair", OPTION_STRING,     "path to crosshair files" },

	// output directory options
	{ NULL,                                              NULL,        OPTION_HEADER,     "CORE OUTPUT DIRECTORY OPTIONS" },
	{ OPTION_CFG_DIRECTORY,                              "cfg",       OPTION_STRING,     "directory to save configurations" },
	{ OPTION_NVRAM_DIRECTORY,                            "nvram",     OPTION_STRING,     "directory to save nvram contents" },
	{ OPTION_MEMCARD_DIRECTORY,                          "memcard",   OPTION_STRING,     "directory to save memory card contents" },
	{ OPTION_INPUT_DIRECTORY,                            "inp",       OPTION_STRING,     "directory to save input device logs" },
	{ OPTION_STATE_DIRECTORY,                            "sta",       OPTION_STRING,     "directory to save states" },
	{ OPTION_SNAPSHOT_DIRECTORY,                         "snap",      OPTION_STRING,     "directory to save screenshots" },
	{ OPTION_DIFF_DIRECTORY,                             "diff",      OPTION_STRING,     "directory to save hard drive image difference files" },
	{ OPTION_COMMENT_DIRECTORY,                          "comments",  OPTION_STRING,     "directory to save debugger comments" },

	// state/playback options
	{ NULL,                                              NULL,        OPTION_HEADER,     "CORE STATE/PLAYBACK OPTIONS" },
	{ OPTION_STATE,                                      NULL,        OPTION_STRING,     "saved state to load" },
	{ OPTION_AUTOSAVE,                                   "0",         OPTION_BOOLEAN,    "enable automatic restore at startup, and automatic save at exit time" },
	{ OPTION_PLAYBACK ";pb",                             NULL,        OPTION_STRING,     "playback an input file" },
	{ OPTION_RECORD ";rec",                              NULL,        OPTION_STRING,     "record an input file" },
	{ OPTION_MNGWRITE,                                   NULL,        OPTION_STRING,     "optional filename to write a MNG movie of the current session" },
	{ OPTION_AVIWRITE,                                   NULL,        OPTION_STRING,     "optional filename to write an AVI movie of the current session" },
	{ OPTION_WAVWRITE,                                   NULL,        OPTION_STRING,     "optional filename to write a WAV file of the current session" },
	{ OPTION_SNAPNAME,                                   "%g/%i",     OPTION_STRING,     "override of the default snapshot/movie naming; %g == gamename, %i == index" },
	{ OPTION_SNAPSIZE,                                   "auto",      OPTION_STRING,     "specify snapshot/movie resolution (<width>x<height>) or 'auto' to use minimal size " },
	{ OPTION_SNAPVIEW,                                   "internal",  OPTION_STRING,     "specify snapshot/movie view or 'internal' to use internal pixel-aspect views" },
	{ OPTION_BURNIN,                                     "0",         OPTION_BOOLEAN,    "create burn-in snapshots for each screen" },

	// performance options
	{ NULL,                                              NULL,        OPTION_HEADER,     "CORE PERFORMANCE OPTIONS" },
	{ OPTION_AUTOFRAMESKIP ";afs",                       "0",         OPTION_BOOLEAN,    "enable automatic frameskip selection" },
	{ OPTION_FRAMESKIP ";fs(0-10)",                      "0",         OPTION_INTEGER,    "set frameskip to fixed value, 0-10 (autoframeskip must be disabled)" },
	{ OPTION_SECONDS_TO_RUN ";str",                      "0",         OPTION_INTEGER,    "number of emulated seconds to run before automatically exiting" },
	{ OPTION_THROTTLE,                                   "1",         OPTION_BOOLEAN,    "enable throttling to keep game running in sync with real time" },
	{ OPTION_SLEEP,                                      "1",         OPTION_BOOLEAN,    "enable sleeping, which gives time back to other applications when idle" },
	{ OPTION_SPEED "(0.01-100)",                         "1.0",       OPTION_FLOAT,      "controls the speed of gameplay, relative to realtime; smaller numbers are slower" },
	{ OPTION_REFRESHSPEED ";rs",                         "0",         OPTION_BOOLEAN,    "automatically adjusts the speed of gameplay to keep the refresh rate lower than the screen" },

	// rotation options
	{ NULL,                                              NULL,        OPTION_HEADER,     "CORE ROTATION OPTIONS" },
	{ OPTION_ROTATE,                                     "1",         OPTION_BOOLEAN,    "rotate the game screen according to the game's orientation needs it" },
	{ OPTION_ROR,                                        "0",         OPTION_BOOLEAN,    "rotate screen clockwise 90 degrees" },
	{ OPTION_ROL,                                        "0",         OPTION_BOOLEAN,    "rotate screen counterclockwise 90 degrees" },
	{ OPTION_AUTOROR,                                    "0",         OPTION_BOOLEAN,    "automatically rotate screen clockwise 90 degrees if vertical" },
	{ OPTION_AUTOROL,                                    "0",         OPTION_BOOLEAN,    "automatically rotate screen counterclockwise 90 degrees if vertical" },
	{ OPTION_FLIPX,                                      "0",         OPTION_BOOLEAN,    "flip screen left-right" },
	{ OPTION_FLIPY,                                      "0",         OPTION_BOOLEAN,    "flip screen upside-down" },

	// artwork options
	{ NULL,                                              NULL,        OPTION_HEADER,     "CORE ARTWORK OPTIONS" },
	{ OPTION_ARTWORK_CROP ";artcrop",                    "0",         OPTION_BOOLEAN,    "crop artwork to game screen size" },
	{ OPTION_USE_BACKDROPS ";backdrop",                  "1",         OPTION_BOOLEAN,    "enable backdrops if artwork is enabled and available" },
	{ OPTION_USE_OVERLAYS ";overlay",                    "1",         OPTION_BOOLEAN,    "enable overlays if artwork is enabled and available" },
	{ OPTION_USE_BEZELS ";bezel",                        "1",         OPTION_BOOLEAN,    "enable bezels if artwork is enabled and available" },

	// screen options
	{ NULL,                                              NULL,        OPTION_HEADER,     "CORE SCREEN OPTIONS" },
	{ OPTION_BRIGHTNESS "(0.1-2.0)",                     "1.0",       OPTION_FLOAT,      "default game screen brightness correction" },
	{ OPTION_CONTRAST "(0.1-2.0)",                       "1.0",       OPTION_FLOAT,      "default game screen contrast correction" },
	{ OPTION_GAMMA "(0.1-3.0)",                          "1.0",       OPTION_FLOAT,      "default game screen gamma correction" },
	{ OPTION_PAUSE_BRIGHTNESS "(0.0-1.0)",               "0.65",      OPTION_FLOAT,      "amount to scale the screen brightness when paused" },
	{ OPTION_EFFECT,                                     "none",      OPTION_STRING,     "name of a PNG file to use for visual effects, or 'none'" },

	// vector options
	{ NULL,                                              NULL,        OPTION_HEADER,     "CORE VECTOR OPTIONS" },
	{ OPTION_ANTIALIAS ";aa",                            "1",         OPTION_BOOLEAN,    "use antialiasing when drawing vectors" },
	{ OPTION_BEAM,                                       "1.0",       OPTION_FLOAT,      "set vector beam width" },
	{ OPTION_FLICKER,                                    "0",         OPTION_FLOAT,      "set vector flicker effect" },

	// sound options
	{ NULL,                                              NULL,        OPTION_HEADER,     "CORE SOUND OPTIONS" },
	{ OPTION_SOUND,                                      "1",         OPTION_BOOLEAN,    "enable sound output" },
	{ OPTION_SAMPLERATE ";sr(1000-1000000)",             "48000",     OPTION_INTEGER,    "set sound output sample rate" },
	{ OPTION_SAMPLES,                                    "1",         OPTION_BOOLEAN,    "enable the use of external samples if available" },
	{ OPTION_VOLUME ";vol",                              "0",         OPTION_INTEGER,    "sound volume in decibels (-32 min, 0 max)" },

	// input options
	{ NULL,                                              NULL,        OPTION_HEADER,     "CORE INPUT OPTIONS" },
	{ OPTION_COIN_LOCKOUT ";coinlock",                   "1",         OPTION_BOOLEAN,    "enable coin lockouts to actually lock out coins" },
	{ OPTION_CTRLR,                                      NULL,        OPTION_STRING,     "preconfigure for specified controller" },
	{ OPTION_MOUSE,                                      "0",         OPTION_BOOLEAN,    "enable mouse input" },
	{ OPTION_JOYSTICK ";joy",                            "1",         OPTION_BOOLEAN,    "enable joystick input" },
	{ OPTION_LIGHTGUN ";gun",                            "0",         OPTION_BOOLEAN,    "enable lightgun input" },
	{ OPTION_MULTIKEYBOARD ";multikey",                  "0",         OPTION_BOOLEAN,    "enable separate input from each keyboard device (if present)" },
	{ OPTION_MULTIMOUSE,                                 "0",         OPTION_BOOLEAN,    "enable separate input from each mouse device (if present)" },
	{ OPTION_STEADYKEY ";steady",                        "0",         OPTION_BOOLEAN,    "enable steadykey support" },
	{ OPTION_OFFSCREEN_RELOAD ";reload",                 "0",         OPTION_BOOLEAN,    "convert lightgun button 2 into offscreen reload" },
	{ OPTION_JOYSTICK_MAP ";joymap",                     "auto",      OPTION_STRING,     "explicit joystick map, or auto to auto-select" },
	{ OPTION_JOYSTICK_DEADZONE ";joy_deadzone;jdz",      "0.3",       OPTION_FLOAT,      "center deadzone range for joystick where change is ignored (0.0 center, 1.0 end)" },
	{ OPTION_JOYSTICK_SATURATION ";joy_saturation;jsat", "0.85",      OPTION_FLOAT,      "end of axis saturation range for joystick where change is ignored (0.0 center, 1.0 end)" },
	{ OPTION_NATURAL_KEYBOARD ";nat",                    "0",         OPTION_BOOLEAN,    "specifies whether to use a natural keyboard or not" },

	// input autoenable options
	{ NULL,                                              NULL,        OPTION_HEADER,     "CORE INPUT AUTOMATIC ENABLE OPTIONS" },
	{ OPTION_PADDLE_DEVICE ";paddle",                    "keyboard",  OPTION_STRING,     "enable (none|keyboard|mouse|lightgun|joystick) if a paddle control is present" },
	{ OPTION_ADSTICK_DEVICE ";adstick",                  "keyboard",  OPTION_STRING,     "enable (none|keyboard|mouse|lightgun|joystick) if an analog joystick control is present" },
	{ OPTION_PEDAL_DEVICE ";pedal",                      "keyboard",  OPTION_STRING,     "enable (none|keyboard|mouse|lightgun|joystick) if a pedal control is present" },
	{ OPTION_DIAL_DEVICE ";dial",                        "keyboard",  OPTION_STRING,     "enable (none|keyboard|mouse|lightgun|joystick) if a dial control is present" },
	{ OPTION_TRACKBALL_DEVICE ";trackball",              "keyboard",  OPTION_STRING,     "enable (none|keyboard|mouse|lightgun|joystick) if a trackball control is present" },
	{ OPTION_LIGHTGUN_DEVICE,                            "keyboard",  OPTION_STRING,     "enable (none|keyboard|mouse|lightgun|joystick) if a lightgun control is present" },
	{ OPTION_POSITIONAL_DEVICE,                          "keyboard",  OPTION_STRING,     "enable (none|keyboard|mouse|lightgun|joystick) if a positional control is present" },
	{ OPTION_MOUSE_DEVICE,                               "mouse",     OPTION_STRING,     "enable (none|keyboard|mouse|lightgun|joystick) if a mouse control is present" },

	// debugging options
	{ NULL,                                              NULL,        OPTION_HEADER,     "CORE DEBUGGING OPTIONS" },
	{ OPTION_LOG,                                        "0",         OPTION_BOOLEAN,    "generate an error.log file" },
	{ OPTION_VERBOSE ";v",                               "0",         OPTION_BOOLEAN,    "display additional diagnostic information" },
	{ OPTION_UPDATEINPAUSE,                              "0",         OPTION_BOOLEAN,    "keep calling video updates while in pause" },
	{ OPTION_DEBUG ";d",                                 "0",         OPTION_BOOLEAN,    "enable/disable debugger" },
	{ OPTION_DEBUGSCRIPT,                                NULL,        OPTION_STRING,     "script for debugger" },
	{ OPTION_DEBUG_INTERNAL ";di",                       "0",         OPTION_BOOLEAN,    "use the internal debugger for debugging" },

	// misc options
	{ NULL,                                              NULL,        OPTION_HEADER,     "CORE MISC OPTIONS" },
	{ OPTION_BIOS,                                       NULL,        OPTION_STRING,     "select the system BIOS to use" },
	{ OPTION_CHEAT ";c",                                 "0",         OPTION_BOOLEAN,    "enable cheat subsystem" },
	{ OPTION_SKIP_GAMEINFO,                              "0",         OPTION_BOOLEAN,    "skip displaying the information screen at startup" },
	{ OPTION_UI_FONT,                                    "default",   OPTION_STRING,     "specify a font to use" },
	{ OPTION_RAMSIZE ";ram",                             NULL,        OPTION_STRING,     "size of RAM (if supported by driver)" },
	{ NULL }
};



//**************************************************************************
//  EMU OPTIONS
//**************************************************************************

//-------------------------------------------------
//  emu_options - constructor
//-------------------------------------------------

emu_options::emu_options()
{
	add_entries(s_option_entries);
}


//-------------------------------------------------
//  add_device_options - add all of the device
//  options for the configured system
//-------------------------------------------------

void emu_options::add_device_options()
{
	// remove any existing device options
	remove_device_options();

	// look up the system configured by name; if no match, do nothing
	const game_driver *cursystem = system();
	if (cursystem == NULL)
		return;

	// create the configuration
	machine_config config(*cursystem, *this);

	// iterate through all image devices
	const device_config_image_interface *image = NULL;
	bool first = true;
	options_entry entry[2] = { { 0 }, { 0 } };
	for (bool gotone = config.m_devicelist.first(image); gotone; gotone = image->next(image))
	{
		// first device? add the header as to be pretty
		if (first)
		{
			first = false;
			entry[0].name = NULL;
			entry[0].description = "IMAGE DEVICES";
			entry[0].flags = OPTION_HEADER | OPTION_FLAG_DEVICE;
			add_entries(entry);
		}

		// retrieve info about the device instance
		astring option_name;
		option_name.printf("%s;%s", image->instance_name(), image->brief_instance_name());

		// add the option
		entry[0].name = option_name;
		entry[0].description = NULL;
		entry[0].flags = OPTION_STRING | OPTION_FLAG_DEVICE;
		add_entries(entry, true);
	}
}


//-------------------------------------------------
//  remove_device_options - remove device options
//-------------------------------------------------

void emu_options::remove_device_options()
{
	// iterate through options and remove interesting ones
	entry *nextentry;
	for (entry *curentry = first(); curentry != NULL; curentry = nextentry)
	{
		// pre-fetch the next entry in case we delete this one
		nextentry = curentry->next();

		// if this is a device option, nuke it
		if ((curentry->flags() & OPTION_FLAG_DEVICE) != 0)
			remove_entry(*curentry);
	}
}


//-------------------------------------------------
//  parse_command_line - parse the command line
//  and update the devices
//-------------------------------------------------

bool emu_options::parse_command_line(int argc, char *argv[], astring &error_string)
{
	// remember the original system name
	astring old_system_name(system_name());

	// parse as normal
	bool result = core_options::parse_command_line(argc, argv, OPTION_PRIORITY_CMDLINE, error_string);

	// if the system name changed, fix up the device options
	if (old_system_name != system_name())
	{
		add_device_options();

		// if we failed the first time, try parsing again with the new options in place
		if (!result)
			result = core_options::parse_command_line(argc, argv, OPTION_PRIORITY_CMDLINE, error_string);
	}
	return result;
}


//-------------------------------------------------
//  parse_standard_inis - parse the standard set
//  of INI files
//-------------------------------------------------

void emu_options::parse_standard_inis(astring &error_string)
{
	// start with an empty string
	error_string.reset();

	// parse the INI file defined by the platform (e.g., "mame.ini")
	// we do this twice so that the first file can change the INI path
	parse_one_ini(CONFIGNAME, OPTION_PRIORITY_MAME_INI);
	parse_one_ini(CONFIGNAME, OPTION_PRIORITY_MAME_INI, &error_string);

	// debug mode: parse "debug.ini" as well
	if (debug())
		parse_one_ini("debug", OPTION_PRIORITY_DEBUG_INI, &error_string);

	// if we have a valid system driver, parse system-specific INI files
	const game_driver *cursystem = system();
	if (cursystem == NULL)
		return;

	// parse "vertical.ini" or "horizont.ini"
	if (cursystem->flags & ORIENTATION_SWAP_XY)
		parse_one_ini("vertical", OPTION_PRIORITY_ORIENTATION_INI, &error_string);
	else
		parse_one_ini("horizont", OPTION_PRIORITY_ORIENTATION_INI, &error_string);

	// parse "vector.ini" for vector games
	{
		machine_config config(*cursystem, *this);
		for (const screen_device_config *devconfig = config.first_screen(); devconfig != NULL; devconfig = devconfig->next_screen())
			if (devconfig->screen_type() == SCREEN_TYPE_VECTOR)
			{
				parse_one_ini("vector", OPTION_PRIORITY_VECTOR_INI, &error_string);
				break;
			}
	}

	// next parse "source/<sourcefile>.ini"; if that doesn't exist, try <sourcefile>.ini
	astring sourcename;
	core_filename_extract_base(&sourcename, cursystem->source_file, TRUE)->ins(0, "source" PATH_SEPARATOR);
	if (!parse_one_ini(sourcename, OPTION_PRIORITY_SOURCE_INI, &error_string))
	{
		core_filename_extract_base(&sourcename, cursystem->source_file, TRUE);
		parse_one_ini(sourcename, OPTION_PRIORITY_SOURCE_INI, &error_string);
	}

	// then parse the grandparent, parent, and system-specific INIs
	int parent = driver_list::clone(*cursystem);
	int gparent = (parent != -1) ? driver_list::clone(parent) : -1;
	if (gparent != -1)
		parse_one_ini(driver_list::driver(gparent).name, OPTION_PRIORITY_GPARENT_INI, &error_string);
	if (parent != -1)
		parse_one_ini(driver_list::driver(parent).name, OPTION_PRIORITY_PARENT_INI, &error_string);
	parse_one_ini(cursystem->name, OPTION_PRIORITY_DRIVER_INI, &error_string);
}


//-------------------------------------------------
//  system - return a pointer to the specified
//  system driver, or NULL if no match
//-------------------------------------------------

const game_driver *emu_options::system() const
{
	astring tempstr;
	int index = driver_list::find(*core_filename_extract_base(&tempstr, system_name(), TRUE));
	return (index != -1) ? &driver_list::driver(index) : NULL;
}


//-------------------------------------------------
//  set_system_name - set a new system name
//-------------------------------------------------

void emu_options::set_system_name(const char *name)
{
	// remember the original system name
	astring old_system_name(system_name());

	// if the system name changed, fix up the device options
	if (old_system_name != name)
	{
		// first set the new name
		astring error;
		set_value(OPTION_SYSTEMNAME, name, OPTION_PRIORITY_CMDLINE, error);
		assert(!error);

		// then add the options
		add_device_options();
	}
}


//-------------------------------------------------
//  device_option - return the value of the
//  device-specific option
//-------------------------------------------------

const char *emu_options::device_option(device_image_interface &image)
{
	return image.device().machine().options().value(image.image_config().instance_name());
}


//-------------------------------------------------
//  parse_one_ini - parse a single INI file
//-------------------------------------------------

bool emu_options::parse_one_ini(const char *basename, int priority, astring *error_string)
{
	// don't parse if it has been disabled
	if (!read_config())
		return false;

	// open the file; if we fail, that's ok
	emu_file file(ini_path(), OPEN_FLAG_READ);
	file_error filerr = file.open(basename, ".ini");
	if (filerr != FILERR_NONE)
		return false;

	// parse the file
	mame_printf_verbose("Parsing %s.ini\n", basename);
	astring error;
	bool result = parse_ini_file(file, priority, OPTION_PRIORITY_DRIVER_INI, error);

	// append errors if requested
	if (error && error_string != NULL)
		error_string->catprintf("While parsing %s:\n%s\n", file.fullpath(), error.cstr());

	return result;
}