/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL$
 * $Id$
 *
 */

// Console module

#include "sci/sci.h"
#include "sci/console.h"
#include "sci/resource.h"
#include "sci/vocabulary.h"
#include "sci/engine/savegame.h"
#include "sci/engine/state.h"
#include "sci/engine/gc.h"
#include "sci/gfx/gfx_gui.h"	// for sciw_set_status_bar
#include "sci/gfx/gfx_state_internal.h"
#include "sci/gfx/gfx_widgets.h"	// for gfxw_find_port
#include "sci/sfx/songlib.h"	// for songlib_t
#include "sci/vocabulary.h"

#include "common/savefile.h"

namespace Sci {

extern EngineState *g_EngineState;

int _kdebug_cheap_event_hack = 0;
bool _kdebug_track_mouse_clicks = false;

Console::Console(SciEngine *vm) : GUI::Debugger() {
	_vm = vm;

	DCmd_Register("version",			WRAP_METHOD(Console, cmdGetVersion));
//	DCmd_Register("classes",			WRAP_METHOD(Console, cmdClasses));	// TODO
	DCmd_Register("opcodes",			WRAP_METHOD(Console, cmdOpcodes));
	DCmd_Register("selectors",			WRAP_METHOD(Console, cmdSelectors));
	DCmd_Register("kernel_names",		WRAP_METHOD(Console, cmdKernelNames));
	DCmd_Register("suffixes",			WRAP_METHOD(Console, cmdSuffixes));
	DCmd_Register("kernel_words",		WRAP_METHOD(Console, cmdKernelWords));
	DCmd_Register("hexdump",			WRAP_METHOD(Console, cmdHexDump));
	DCmd_Register("dissect_script",		WRAP_METHOD(Console, cmdDissectScript));
	DCmd_Register("room",				WRAP_METHOD(Console, cmdRoomNumber));
	DCmd_Register("size",				WRAP_METHOD(Console, cmdResourceSize));
	DCmd_Register("resource_types",		WRAP_METHOD(Console, cmdResourceTypes));
	DCmd_Register("sci0_palette",		WRAP_METHOD(Console, cmdSci0Palette));
	DCmd_Register("hexgrep",			WRAP_METHOD(Console, cmdHexgrep));
	DCmd_Register("list",				WRAP_METHOD(Console, cmdList));
	DCmd_Register("clear_screen",		WRAP_METHOD(Console, cmdClearScreen));
	DCmd_Register("redraw_screen",		WRAP_METHOD(Console, cmdRedrawScreen));
	DCmd_Register("save_game",			WRAP_METHOD(Console, cmdSaveGame));
	DCmd_Register("restore_game",		WRAP_METHOD(Console, cmdRestoreGame));
	DCmd_Register("restart_game",		WRAP_METHOD(Console, cmdRestartGame));
	DCmd_Register("class_table",		WRAP_METHOD(Console, cmdClassTable));
	DCmd_Register("sentence_fragments",	WRAP_METHOD(Console, cmdSentenceFragments));
	DCmd_Register("parser_nodes",		WRAP_METHOD(Console, cmdParserNodes));
	DCmd_Register("parser_words",		WRAP_METHOD(Console, cmdParserWords));
	DCmd_Register("draw_pic",			WRAP_METHOD(Console, cmdDrawPic));
	DCmd_Register("draw_rect",			WRAP_METHOD(Console, cmdDrawRect));
	DCmd_Register("fill_screen",		WRAP_METHOD(Console, cmdFillScreen));
	DCmd_Register("current_port",		WRAP_METHOD(Console, cmdCurrentPort));
	DCmd_Register("print_port",			WRAP_METHOD(Console, cmdPrintPort));
	DCmd_Register("parse_grammar",		WRAP_METHOD(Console, cmdParseGrammar));
	DCmd_Register("visual_state",		WRAP_METHOD(Console, cmdVisualState));
	DCmd_Register("dynamic_views",		WRAP_METHOD(Console, cmdDynamicViews));
	DCmd_Register("dropped_views",		WRAP_METHOD(Console, cmdDroppedViews));
	DCmd_Register("status_bar",			WRAP_METHOD(Console, cmdStatusBarColors));
	DCmd_Register("simkey",				WRAP_METHOD(Console, cmdSimulateKey));
	DCmd_Register("track_mouse",		WRAP_METHOD(Console, cmdTrackMouse));
	DCmd_Register("segment_table",		WRAP_METHOD(Console, cmdPrintSegmentTable));
	DCmd_Register("segment_info",		WRAP_METHOD(Console, cmdSegmentInfo));
	DCmd_Register("segment_kill",		WRAP_METHOD(Console, cmdKillSegment));
	DCmd_Register("show_map",			WRAP_METHOD(Console, cmdShowMap));
	DCmd_Register("songlib",			WRAP_METHOD(Console, cmdSongLib));
	DCmd_Register("gc",					WRAP_METHOD(Console, cmdInvokeGC));
	DCmd_Register("gc_objects",			WRAP_METHOD(Console, cmdGCObjects));
	DCmd_Register("exit",				WRAP_METHOD(Console, cmdExit));

	// These were in sci.cpp
	/*
	con_hook_int(&(gfx_options.buffer_pics_nr), "buffer_pics_nr",
		"Number of pics to buffer in LRU storage\n");
	con_hook_int(&(gfx_options.pic0_dither_mode), "pic0_dither_mode",
		"Mode to use for pic0 dithering\n");
	con_hook_int(&(gfx_options.pic0_dither_pattern), "pic0_dither_pattern",
		"Pattern to use for pic0 dithering\n");
	con_hook_int(&(gfx_options.pic0_unscaled), "pic0_unscaled",
		"Whether pic0 should be drawn unscaled\n");
	con_hook_int(&(gfx_options.dirty_frames), "dirty_frames",
		"Dirty frames management\n");
	*/
}

Console::~Console() {
}

static ResourceType parseResourceType(const char *resid) {
	// Gets the resource number of a resource string, or returns -1
	ResourceType res = kResourceTypeInvalid;

	for (int i = 0; i < kResourceTypeInvalid; i++)
		if (strcmp(getResourceTypeName((ResourceType)i), resid) == 0)
			res = (ResourceType)i;

	return res;
}

bool Console::cmdGetVersion(int argc, const char **argv) {
	int ver = _vm->getVersion();

	DebugPrintf("Resource file version:        %s\n", sci_version_types[_vm->getResMgr()->_sciVersion]);
	DebugPrintf("Emulated interpreter version: %s\n", versionNames[ver]);

	return true;
}

bool Console::cmdOpcodes(int argc, const char **argv) {
	DebugPrintf("Opcode names in numeric order [index: type name]:\n");
	for (uint seeker = 0; seeker < g_EngineState->_vocabulary->_opcodes.size(); seeker++) {
		opcode &op = g_EngineState->_vocabulary->_opcodes[seeker];
		DebugPrintf("%03x: %03x %20s | ", seeker, op.type, op.name.c_str());
		if ((seeker % 3) == 2)
			DebugPrintf("\n");
	}

	DebugPrintf("\n");

	return true;
}

bool Console::cmdSelectors(int argc, const char **argv) {
	DebugPrintf("Selector names in numeric order:\n");
	for (uint seeker = 0; seeker < g_EngineState->_vocabulary->_selectorNames.size(); seeker++) {
		DebugPrintf("%03x: %20s | ", seeker, g_EngineState->_vocabulary->_selectorNames[seeker].c_str());
		if ((seeker % 3) == 2)
			DebugPrintf("\n");
	}

	DebugPrintf("\n");

	return true;
}

bool Console::cmdKernelNames(int argc, const char **argv) {
	DebugPrintf("Selector names in numeric order:\n");
	for (uint seeker = 0; seeker <  g_EngineState->_vocabulary->_kernelNames.size(); seeker++) {
		DebugPrintf("%03x: %20s | ", seeker, g_EngineState->_vocabulary->_kernelNames[seeker].c_str());
		if ((seeker % 3) == 2)
			DebugPrintf("\n");
	}

	DebugPrintf("\n");

	return true;
}

bool Console::cmdSuffixes(int argc, const char **argv) {
	char word_buf[256], alt_buf[256];

	int i = 0;
	for (SuffixList::const_iterator suf = g_EngineState->_vocabulary->_parserSuffixes.begin(); suf != g_EngineState->_vocabulary->_parserSuffixes.end(); ++suf) {
		strncpy(word_buf, suf->word_suffix, suf->word_suffix_length);
		word_buf[suf->word_suffix_length] = 0;
		strncpy(alt_buf, suf->alt_suffix, suf->alt_suffix_length);
		alt_buf[suf->alt_suffix_length] = 0;

		DebugPrintf("%4d: (%03x) -%12s  =>  -%12s (%03x)\n", i, suf->class_mask, word_buf, alt_buf, suf->result_class);
		++i;
	}

	return true;
}

bool Console::cmdKernelWords(int argc, const char **argv) {
	int j = 0;
	for (WordMap::iterator i = g_EngineState->_vocabulary->_parserWords.begin(); i != g_EngineState->_vocabulary->_parserWords.end(); ++i) {
		DebugPrintf("%4d: %03x [%03x] %20s |", j, i->_value._class, i->_value._group, i->_key.c_str());
		if (j % 3 == 0)
			DebugPrintf("\n");
		j++;
	}

	DebugPrintf("\n");

	return true;
}

bool Console::cmdHexDump(int argc, const char **argv) {
	if (argc != 3) {
		DebugPrintf("Usage: %s <resource type> <resource number>\n", argv[0]);
		cmdResourceTypes(argc, argv);
		return true;
	}

	int resNum = atoi(argv[2]);
	if (resNum == 0) {
		DebugPrintf("The resource number specified is not a number");
		return true;
	}

	ResourceType res = parseResourceType(argv[1]);

	if (res == kResourceTypeInvalid)
		DebugPrintf("Resource type '%s' is not valid\n", argv[1]);
	else {
		Resource *resource = _vm->getResMgr()->findResource(res, resNum, 0);
		if (resource) {
			Common::hexdump(resource->data, resource->size, 16, 0);
			DebugPrintf("Resource %s.%03d has been dumped to standard output\n", argv[1], resNum);
		} else {
			DebugPrintf("Resource %s.%03d not found\n", argv[1], resNum);
		}
	}

	return true;
}

bool Console::cmdDissectScript(int argc, const char **argv) {
	Common::StringList selectorNames;

	if (argc != 2) {
		DebugPrintf("Examines a script\n");
		DebugPrintf("Usage: %s <script number>\n", argv[0]);
		return true;
	}

	script_dissect(_vm->getResMgr(), atoi(argv[1]), g_EngineState->_vocabulary->_parserWords, g_EngineState->_vocabulary->_selectorNames);

	return true;
}

bool Console::cmdRoomNumber(int argc, const char **argv) {
	DebugPrintf("Current room number is %d\n", g_EngineState->currentRoomNumber());

	return true;
}

bool Console::cmdResourceSize(int argc, const char **argv) {
	if (argc != 3) {
		DebugPrintf("Shows the size of a resource\n");
		DebugPrintf("Usage: %s <resource type> <resource number>\n", argv[0]);
		return true;
	}

	int resNum = atoi(argv[2]);
	if (resNum == 0) {
		DebugPrintf("The resource number specified is not a number");
		return true;
	}

	ResourceType res = parseResourceType(argv[1]);

	if (res == kResourceTypeInvalid)
		DebugPrintf("Resource type '%s' is not valid\n", argv[1]);
	else {
		Resource *resource = _vm->getResMgr()->findResource(res, resNum, 0);
		if (resource) {
			DebugPrintf("Resource size: %d\n", resource->size);
		} else {
			DebugPrintf("Resource %s.%03d not found\n", argv[1], resNum);
		}
	}

	return true;
}

bool Console::cmdResourceTypes(int argc, const char **argv) {
	DebugPrintf("The %d valid resource types are:\n", kResourceTypeInvalid);
	for (int i = 0; i < kResourceTypeInvalid; i++) {
		DebugPrintf("%s", getResourceTypeName((ResourceType) i));
		DebugPrintf((i < kResourceTypeInvalid - 1) ? ", " : "\n");
	}

	return true;
}

extern int sci0_palette;

bool Console::cmdSci0Palette(int argc, const char **argv) {
	if (argc != 2) {
		DebugPrintf("Set the SCI0 palette to use - 0: EGA, 1: AGI/Amiga, 2: Grayscale\n");
		return true;
	}

	sci0_palette = atoi(argv[1]);
	cmdRedrawScreen(argc, argv);

	return false;
}

bool Console::cmdHexgrep(int argc, const char **argv) {
	if (argc < 4) {
		DebugPrintf("Searches some resources for a particular sequence of bytes, represented as hexadecimal numbers.\n");
		DebugPrintf("Usage: %s <resource type> <resource number> <search string>\n", argv[0]);
		DebugPrintf("<resource number> can be a specific resource number, or \"all\" for all of the resources of the specified type\n", argv[0]);
		DebugPrintf("EXAMPLES:\n  hexgrep script all e8 03 c8 00\n  hexgrep pic 042 fe");
		cmdResourceTypes(argc, argv);
		return true;
	}

	ResourceType restype = parseResourceType(argv[1]);
	int resNumber = 0, resMax = 0;
	char seekString[500];
	Resource *script = NULL;

	if (restype == kResourceTypeInvalid) {
		DebugPrintf("Resource type '%s' is not valid\n", argv[1]);
		return true;
	}

	if (!scumm_stricmp(argv[2], "all")) {
		resNumber = 0;
		resMax = 999;
	} else {
		resNumber = resMax = atoi(argv[2]);
	}

	strcpy(seekString, argv[3]);

	// Construct the seek string
	for (int i = 4; i < argc; i++) {
		strcat(seekString, argv[i]);
	}

	for (; resNumber <= resMax; resNumber++) {
		if ((script = _vm->getResMgr()->findResource(restype, resNumber, 0))) {
			unsigned int seeker = 0, seekerold = 0;
			uint32 comppos = 0;
			int output_script_name = 0;

			while (seeker < script->size) {
				if (script->data[seeker] == seekString[comppos]) {
					if (comppos == 0)
						seekerold = seeker;

					comppos++;

					if (comppos == strlen(seekString)) {
						comppos = 0;
						seeker = seekerold + 1;

						if (!output_script_name) {
							DebugPrintf("\nIn %s.%03d:\n", getResourceTypeName((ResourceType)restype), resNumber);
							output_script_name = 1;
						}
						DebugPrintf("   0x%04x\n", seekerold);
					}
				} else
					comppos = 0;

				seeker++;
			}
		}
	}

	return true;
}

bool Console::cmdList(int argc, const char **argv) {
	if (argc != 2) {
		DebugPrintf("Lists all of the resources of a given type\n");
		cmdResourceTypes(argc, argv);
		return true;
	}


	ResourceType res = parseResourceType(argv[1]);
	if (res == kResourceTypeInvalid)
		DebugPrintf("Unknown resource type: '%s'\n", argv[1]);
	else {
		int j = 0;
		for (int i = 0; i < sci_max_resource_nr[_vm->getResMgr()->_sciVersion]; i++) {
			if (_vm->getResMgr()->testResource(res, i)) {
				DebugPrintf("%s.%03d | ", getResourceTypeName((ResourceType)res), i);
				if (j % 5 == 0)
					DebugPrintf("\n");
				j++;
			}
		}
		DebugPrintf("\n");
	}

	return true;
}

bool Console::cmdClearScreen(int argc, const char **argv) {
	gfxop_clear_box(g_EngineState->gfx_state, gfx_rect(0, 0, 320, 200));
	gfxop_update_box(g_EngineState->gfx_state, gfx_rect(0, 0, 320, 200));
	return false;
}

bool Console::cmdRedrawScreen(int argc, const char **argv) {
	g_EngineState->visual->draw(Common::Point(0, 0));
	gfxop_update_box(g_EngineState->gfx_state, gfx_rect(0, 0, 320, 200));
	gfxop_update(g_EngineState->gfx_state);
	gfxop_sleep(g_EngineState->gfx_state, 0);
	return false;
}

bool Console::cmdSaveGame(int argc, const char **argv) {
	if (argc != 2) {
		DebugPrintf("Save the current game state to the hard disk\n");
		DebugPrintf("Usage: %s <filename>\n", argv[0]);
		return true;
	}

	int result = 0;
	for (uint i = 0; i < g_EngineState->_fileHandles.size(); i++)
		if (g_EngineState->_fileHandles[i].isOpen())
			result++;

	if (result)
		DebugPrintf("Note: Game state has %d open file handles.\n", result);

	Common::SaveFileManager *saveFileMan = g_engine->getSaveFileManager();
	Common::OutSaveFile *out;
	if (!(out = saveFileMan->openForSaving(argv[1]))) {
		DebugPrintf("Error opening savegame \"%s\" for writing\n", argv[1]);
		return true;
	}

	// TODO: enable custom descriptions? force filename into a specific format?
	if (gamestate_save(g_EngineState, out, "debugging")) {
		DebugPrintf("Saving the game state to '%s' failed\n", argv[1]);
	}

	return true;
}

bool Console::cmdRestoreGame(int argc, const char **argv) {
	if (argc != 2) {
		DebugPrintf("Restores a saved game from the hard disk\n");
		DebugPrintf("Usage: %s <filename>\n", argv[0]);
		return true;
	}

	EngineState *newstate = NULL;

	Common::SaveFileManager *saveFileMan = g_engine->getSaveFileManager();
	Common::SeekableReadStream *in;
	if (!(in = saveFileMan->openForLoading(argv[1]))) {
		// found a savegame file
		newstate = gamestate_restore(g_EngineState, in);
		delete in;
	}

	if (newstate) {
		g_EngineState->successor = newstate; // Set successor

		script_abort_flag = SCRIPT_ABORT_WITH_REPLAY; // Abort current game
		_debugstate_valid = 0;

		shrink_execution_stack(g_EngineState, g_EngineState->execution_stack_base + 1);
		return 0;
	} else {
		DebugPrintf("Restoring gamestate '%s' failed.\n", argv[1]);
		return 1;
	}

	return false;
}

bool Console::cmdRestartGame(int argc, const char **argv) {
	if (argc != 2) {
		DebugPrintf("Restarts the game. There are two ways to restart a SCI game:\n");
		DebugPrintf("%s play - calls the game object's play() method\n", argv[0]);
		DebugPrintf("%s replay - calls the replay() methody\n", argv[0]);
		return true;
	}

	if (!scumm_stricmp(argv[1], "play")) {
		g_EngineState->restarting_flags |= SCI_GAME_WAS_RESTARTED_AT_LEAST_ONCE;
	} else if (!scumm_stricmp(argv[1], "replay")) {
		g_EngineState->restarting_flags &= ~SCI_GAME_WAS_RESTARTED_AT_LEAST_ONCE;
	} else {
		DebugPrintf("Invalid usage of %s\n", argv[0]);
		return true;
	}

	g_EngineState->restarting_flags |= SCI_GAME_IS_RESTARTING_NOW;
	script_abort_flag = 1;
	_debugstate_valid = 0;

	return false;
}

bool Console::cmdClassTable(int argc, const char **argv) {
	DebugPrintf("Available classes:\n");
	for (uint i = 0; i < g_EngineState->_classtable.size(); i++) {
		if (g_EngineState->_classtable[i].reg.segment) {
			DebugPrintf(" Class 0x%x at %04x:%04x (script 0x%x)\n", i, 
					PRINT_REG(g_EngineState->_classtable[i].reg), g_EngineState->_classtable[i].script);
		}
	}

	return true;
}

bool Console::cmdSentenceFragments(int argc, const char **argv) {
	DebugPrintf("Sentence fragments (used to build Parse trees\n");

	for (uint i = 0; i < g_EngineState->_vocabulary->_parserBranches.size(); i++) {
		int j = 0;

		DebugPrintf("R%02d: [%x] ->", i, g_EngineState->_vocabulary->_parserBranches[i].id);
		while ((j < 10) && g_EngineState->_vocabulary->_parserBranches[i].data[j]) {
			int dat = g_EngineState->_vocabulary->_parserBranches[i].data[j++];

			switch (dat) {
			case VOCAB_TREE_NODE_COMPARE_TYPE:
				dat = g_EngineState->_vocabulary->_parserBranches[i].data[j++];
				DebugPrintf(" C(%x)", dat);
				break;

			case VOCAB_TREE_NODE_COMPARE_GROUP:
				dat = g_EngineState->_vocabulary->_parserBranches[i].data[j++];
				DebugPrintf(" WG(%x)", dat);
				break;

			case VOCAB_TREE_NODE_FORCE_STORAGE:
				dat = g_EngineState->_vocabulary->_parserBranches[i].data[j++];
				DebugPrintf(" FORCE(%x)", dat);
				break;

			default:
				if (dat > VOCAB_TREE_NODE_LAST_WORD_STORAGE) {
					int dat2 = g_EngineState->_vocabulary->_parserBranches[i].data[j++];
					DebugPrintf(" %x[%x]", dat, dat2);
				} else
					DebugPrintf(" ?%x?", dat);
			}
		}
		DebugPrintf("\n");
	}

	DebugPrintf("%d rules.\n", g_EngineState->_vocabulary->_parserBranches.size());

	return true;
}

bool Console::cmdParserNodes(int argc, const char **argv) {
	if (argc != 2) {
		DebugPrintf("Shows the specified number of nodes from the parse node tree\n");
		DebugPrintf("Usage: %s <nr>\n", argv[0]);
		DebugPrintf("where <nr> is the number of nodes to show from the parse node tree\n");
		return true;
	}

	int end = MIN<int>(atoi(argv[1]), VOCAB_TREE_NODES);

	for (int i = 0; i < end; i++) {
		DebugPrintf(" Node %03x: ", i);
		if (g_EngineState->parser_nodes[i].type == PARSE_TREE_NODE_LEAF)
			DebugPrintf("Leaf: %04x\n", g_EngineState->parser_nodes[i].content.value);
		else
			DebugPrintf("Branch: ->%04x, ->%04x\n", g_EngineState->parser_nodes[i].content.branches[0],
			          g_EngineState->parser_nodes[i].content.branches[1]);
	}

	return true;
}

bool Console::cmdParserWords(int argc, const char **argv) {
	if (g_EngineState->_vocabulary->_parserWords.empty()) {
		DebugPrintf("No words.\n");
		return true;
	}

	for (WordMap::iterator i = g_EngineState->_vocabulary->_parserWords.begin(); i != g_EngineState->_vocabulary->_parserWords.end(); ++i)
		DebugPrintf("%s: C %03x G %03x\n", i->_key.c_str(), i->_value._class, i->_value._group);

	DebugPrintf("%d words\n", g_EngineState->_vocabulary->_parserWords.size());

	return true;
}

bool Console::cmdDrawPic(int argc, const char **argv) {
	if (argc < 2) {
		DebugPrintf("Draws a pic resource\n");
		DebugPrintf("Usage: %s <nr> [<pal>] [<fl>]\n", argv[0]);
		DebugPrintf("where <nr> is the number of the pic resource to draw\n");
		DebugPrintf("<pal> is the optional default palette for the pic (default: 0)\n");
		DebugPrintf("<fl> are any pic draw flags (default: 1)\n");
		return true;
	}

	int flags = 1, default_palette = 0;

	if (argc > 2)
		default_palette = atoi(argv[2]);

	if (argc == 4)
		flags = atoi(argv[3]);

	gfxop_new_pic(g_EngineState->gfx_state, atoi(argv[1]), flags, default_palette);
	gfxop_clear_box(g_EngineState->gfx_state, gfx_rect(0, 0, 320, 200));
	gfxop_update(g_EngineState->gfx_state);
	gfxop_sleep(g_EngineState->gfx_state, 0);

	return false;
}

bool Console::cmdDrawRect(int argc, const char **argv) {
	if (argc != 6) {
		DebugPrintf("Draws a rectangle to the screen with one of the EGA colors\n");
		DebugPrintf("Usage: %s <x> <y> <width> <height> <color>\n", argv[0]);
		DebugPrintf("where <color> is the EGA color to use (0-15)\n");
		return true;
	}

	int col = CLIP<int>(atoi(argv[5]), 0, 15);

	gfxop_set_clip_zone(g_EngineState->gfx_state, gfx_rect_fullscreen);
	gfxop_fill_box(g_EngineState->gfx_state, gfx_rect(atoi(argv[1]), atoi(argv[2]), 
										atoi(argv[3]), atoi(argv[4])), g_EngineState->ega_colors[col]);
	gfxop_update(g_EngineState->gfx_state);

	return false;
}

bool Console::cmdFillScreen(int argc, const char **argv) {
	if (argc != 2) {
		DebugPrintf("Fills the screen with one of the EGA colors\n");
		DebugPrintf("Usage: %s <color>\n", argv[0]);
		DebugPrintf("where <color> is the EGA color to use (0-15)\n");
		return true;
	}

	int col = CLIP<int>(atoi(argv[1]), 0, 15);

	gfxop_set_clip_zone(g_EngineState->gfx_state, gfx_rect_fullscreen);
	gfxop_fill_box(g_EngineState->gfx_state, gfx_rect_fullscreen, g_EngineState->ega_colors[col]);
	gfxop_update(g_EngineState->gfx_state);
	return false;
}

bool Console::cmdCurrentPort(int argc, const char **argv) {
	if (!g_EngineState->port)
		DebugPrintf("There is no port active currently.\n");
	else
		DebugPrintf("Current port ID: %d\n", g_EngineState->port->_ID);

	return true;
}

bool Console::cmdPrintPort(int argc, const char **argv) {
	if (argc != 2) {
		DebugPrintf("Prints information about a port\n");
		DebugPrintf("%s current - prints information about the current port\n", argv[0]);
		DebugPrintf("%s <ID> - prints information about the port with the specified ID\n", argv[0]);
		return true;
	}

	GfxPort *port;
	
	if (!scumm_stricmp(argv[1], "current")) {
		port = g_EngineState->port;
		if (!port)
			DebugPrintf("There is no active port currently\n");
		else
			port->print(0);
	} else {
		if (!g_EngineState->visual) {
			DebugPrintf("Visual is uninitialized\n");
		} else {
			port = gfxw_find_port(g_EngineState->visual, atoi(argv[1]));
			if (!port)
				DebugPrintf("No such port\n");
			else
				port->print(0);
		}
	}

	return true;
}

bool Console::cmdParseGrammar(int argc, const char **argv) {
	DebugPrintf("Parse grammar, in strict GNF:\n");

	parse_rule_list_t *tlist = vocab_build_gnf(g_EngineState->_vocabulary->_parserBranches, 1);
	DebugPrintf("%d allocd rules\n", getAllocatedRulesCount());
	vocab_free_rule_list(tlist);

	return true;
}

bool Console::cmdVisualState(int argc, const char **argv) {
	DebugPrintf("State of the current visual widget:\n");

	if (g_EngineState->visual)
		g_EngineState->visual->print(0);
	else
		DebugPrintf("The visual widget is uninitialized.\n");

	return true;
}

bool Console::cmdDynamicViews(int argc, const char **argv) {
	DebugPrintf("List of active dynamic views:\n");

	if (g_EngineState->dyn_views)
		g_EngineState->dyn_views->print(0);
	else
		DebugPrintf("The list is empty.\n");

	return true;
}

bool Console::cmdDroppedViews(int argc, const char **argv) {
	DebugPrintf("List of dropped dynamic views:\n");

	if (g_EngineState->drop_views)
		g_EngineState->drop_views->print(0);
	else
		DebugPrintf("The list is empty.\n");

	return true;
}

bool Console::cmdStatusBarColors(int argc, const char **argv) {
	if (argc != 3) {
		DebugPrintf("Sets the colors of the status bar\n");
		DebugPrintf("Usage: %s <foreground color> <background color>\n", argv[0]);
		return true;
	}

	g_EngineState->titlebar_port->_color = g_EngineState->ega_colors[atoi(argv[1])];
	g_EngineState->titlebar_port->_bgcolor = g_EngineState->ega_colors[atoi(argv[2])];

	g_EngineState->status_bar_foreground = atoi(argv[1]);
	g_EngineState->status_bar_background = atoi(argv[2]);

	sciw_set_status_bar(g_EngineState, g_EngineState->titlebar_port, g_EngineState->_statusBarText, 
							g_EngineState->status_bar_foreground, g_EngineState->status_bar_background);
	gfxop_update(g_EngineState->gfx_state);

	return false;
}

bool Console::cmdSimulateKey(int argc, const char **argv) {
	if (argc != 2) {
		DebugPrintf("Simulate a keypress with the specified scancode\n");
		DebugPrintf("Usage: %s <key scan code>\n", argv[0]);
		return true;
	}

	_kdebug_cheap_event_hack = atoi(argv[1]);

	return true;
}

bool Console::cmdTrackMouse(int argc, const char **argv) {
	if (argc != 2) {
		DebugPrintf("Toggles mouse position tracking\n");
		DebugPrintf("Usage: %s <on/off>\n", argv[0]);
		DebugPrintf("If switched on, left mouse clicks will print\n");
		DebugPrintf("the coordinates clicked in the debug console\n");
		return true;
	}

	if (!scumm_stricmp(argv[1], "on")) {
		_kdebug_track_mouse_clicks = true;
		DebugPrintf("Mouse tracking turned on\n");
	} else if (!scumm_stricmp(argv[1], "off")) {
		_kdebug_track_mouse_clicks = false;
		DebugPrintf("Mouse tracking turned off\n");
	}

	return true;
}

bool Console::cmdPrintSegmentTable(int argc, const char **argv) {
	DebugPrintf("Segment table:\n");

	for (uint i = 0; i < g_EngineState->seg_manager->_heap.size(); i++) {
		MemObject *mobj = g_EngineState->seg_manager->_heap[i];
		if (mobj && mobj->getType()) {
			DebugPrintf(" [%04x] ", i);

			switch (mobj->getType()) {
			case MEM_OBJ_SCRIPT:
				DebugPrintf("S  script.%03d l:%d ", (*(Script *)mobj).nr, (*(Script *)mobj).lockers);
				break;

			case MEM_OBJ_CLONES:
				DebugPrintf("C  clones (%d allocd)", (*(CloneTable *)mobj).entries_used);
				break;

			case MEM_OBJ_LOCALS:
				DebugPrintf("V  locals %03d", (*(LocalVariables *)mobj).script_id);
				break;

			case MEM_OBJ_STACK:
				DebugPrintf("D  data stack (%d)", (*(DataStack *)mobj).nr);
				break;

			case MEM_OBJ_SYS_STRINGS:
				DebugPrintf("Y  system string table");
				break;

			case MEM_OBJ_LISTS:
				DebugPrintf("L  lists (%d)", (*(ListTable *)mobj).entries_used);
				break;

			case MEM_OBJ_NODES:
				DebugPrintf("N  nodes (%d)", (*(NodeTable *)mobj).entries_used);
				break;

			case MEM_OBJ_HUNK:
				DebugPrintf("H  hunk (%d)", (*(HunkTable *)mobj).entries_used);
				break;

			case MEM_OBJ_DYNMEM:
				DebugPrintf("M  dynmem: %d bytes", (*(DynMem *)mobj)._size);
				break;

			case MEM_OBJ_STRING_FRAG:
				DebugPrintf("F  string fragments");
				break;

			default:
				DebugPrintf("I  Invalid (type = %x)", mobj->getType());
				break;
			}

			DebugPrintf("  seg_ID = %d \n", mobj->getSegMgrId());
		}
	}
	DebugPrintf("\n");

	return true;
}

bool Console::segmentInfo(int nr) {
	DebugPrintf("[%04x] ", nr);

	if ((nr < 0) || ((uint)nr >= g_EngineState->seg_manager->_heap.size()) || !g_EngineState->seg_manager->_heap[nr])
		return false;

	MemObject *mobj = g_EngineState->seg_manager->_heap[nr];

	switch (mobj->getType()) {

	case MEM_OBJ_SCRIPT: {
		Script *scr = (Script *)mobj;
		DebugPrintf("script.%03d locked by %d, bufsize=%d (%x)\n", scr->nr, scr->lockers, (uint)scr->buf_size, (uint)scr->buf_size);
		if (scr->export_table)
			DebugPrintf("  Exports: %4d at %d\n", scr->exports_nr, (int)(((byte *)scr->export_table) - ((byte *)scr->buf)));
		else
			DebugPrintf("  Exports: none\n");

		DebugPrintf("  Synonyms: %4d\n", scr->synonyms_nr);

		if (scr->locals_block)
			DebugPrintf("  Locals : %4d in segment 0x%x\n", scr->locals_block->_locals.size(), scr->locals_segment);
		else
			DebugPrintf("  Locals : none\n");

		DebugPrintf("  Objects: %4d\n", scr->_objects.size());
		for (uint i = 0; i < scr->_objects.size(); i++) {
			DebugPrintf("    ");
			// Object header
			Object *obj = obj_get(g_EngineState, scr->_objects[i].pos);
			if (obj)
				DebugPrintf("[%04x:%04x] %s : %3d vars, %3d methods\n", PRINT_REG(scr->_objects[i].pos), 
							obj_get_name(g_EngineState, scr->_objects[i].pos), obj->_variables.size(), obj->methods_nr);
		}
	}
	break;

	case MEM_OBJ_LOCALS: {
		LocalVariables *locals = (LocalVariables *)mobj;
		DebugPrintf("locals for script.%03d\n", locals->script_id);
		DebugPrintf("  %d (0x%x) locals\n", locals->_locals.size(), locals->_locals.size());
	}
	break;

	case MEM_OBJ_STACK: {
		DataStack *stack = (DataStack *)mobj;
		DebugPrintf("stack\n");
		DebugPrintf("  %d (0x%x) entries\n", stack->nr, stack->nr);
	}
	break;

	case MEM_OBJ_SYS_STRINGS: {
		DebugPrintf("system string table - viewing currently disabled\n");
#if 0
		SystemStrings *strings = &(mobj->data.sys_strings);

		for (int i = 0; i < SYS_STRINGS_MAX; i++)
			if (strings->strings[i].name)
				DebugPrintf("  %s[%d]=\"%s\"\n", strings->strings[i].name, strings->strings[i].max_size, strings->strings[i].value);
#endif
	}
	break;

	case MEM_OBJ_CLONES: {
		CloneTable *ct = (CloneTable *)mobj;

		DebugPrintf("clones\n");

		for (uint i = 0; i < ct->_table.size(); i++)
			if (ct->isValidEntry(i)) {
				reg_t objpos;
				objpos.offset = i;
				objpos.segment = nr;
				DebugPrintf("  [%04x] %s; copy of ", i, obj_get_name(g_EngineState, objpos));
				// Object header
				Object *obj = obj_get(g_EngineState, ct->_table[i].pos);
				if (obj)
					DebugPrintf("[%04x:%04x] %s : %3d vars, %3d methods\n", PRINT_REG(ct->_table[i].pos), 
								obj_get_name(g_EngineState, ct->_table[i].pos), obj->_variables.size(), obj->methods_nr);
			}
	}
	break;

	case MEM_OBJ_LISTS: {
		ListTable *lt = (ListTable *)mobj;

		DebugPrintf("lists\n");
		for (uint i = 0; i < lt->_table.size(); i++)
			if (lt->isValidEntry(i)) {
				DebugPrintf("  [%04x]: ", i);
				printList(&(lt->_table[i]));
			}
	}
	break;

	case MEM_OBJ_NODES: {
		DebugPrintf("nodes (total %d)\n", (*(NodeTable *)mobj).entries_used);
		break;
	}

	case MEM_OBJ_HUNK: {
		HunkTable *ht = (HunkTable *)mobj;

		DebugPrintf("hunk  (total %d)\n", ht->entries_used);
		for (uint i = 0; i < ht->_table.size(); i++)
			if (ht->isValidEntry(i)) {
				DebugPrintf("    [%04x] %d bytes at %p, type=%s\n",
				          i, ht->_table[i].size, ht->_table[i].mem, ht->_table[i].type);
			}
	}
	break;

	case MEM_OBJ_DYNMEM: {
		DebugPrintf("dynmem (%s): %d bytes\n",
		          (*(DynMem *)mobj)._description ? (*(DynMem *)mobj)._description : "no description", (*(DynMem *)mobj)._size);

		Common::hexdump((*(DynMem *)mobj)._buf, (*(DynMem *)mobj)._size, 16, 0);
	}
	break;

	case MEM_OBJ_STRING_FRAG: {
		DebugPrintf("string frags\n");
		break;
	}

	default :
		DebugPrintf("Invalid type %d\n", mobj->getType());
		break;
	}

	DebugPrintf("\n");
	return true;
}

void Console::printList(List *l) {
	reg_t pos = l->first;
	reg_t my_prev = NULL_REG;

	DebugPrintf("\t<\n");

	while (!pos.isNull()) {
		Node *node;
		NodeTable *nt = (NodeTable *)GET_SEGMENT(*g_EngineState->seg_manager, pos.segment, MEM_OBJ_NODES);

		if (!nt || !nt->isValidEntry(pos.offset)) {
			DebugPrintf("   WARNING: %04x:%04x: Doesn't contain list node!\n",
			          PRINT_REG(pos));
			return;
		}

		node = &(nt->_table[pos.offset]);

		DebugPrintf("\t%04x:%04x  : %04x:%04x -> %04x:%04x\n", PRINT_REG(pos), PRINT_REG(node->key), PRINT_REG(node->value));

		if (my_prev != node->pred)
			DebugPrintf("   WARNING: current node gives %04x:%04x as predecessor!\n",
			          PRINT_REG(node->pred));

		my_prev = pos;
		pos = node->succ;
	}

	if (my_prev != l->last)
		DebugPrintf("   WARNING: Last node was expected to be %04x:%04x, was %04x:%04x!\n",
		          PRINT_REG(l->last), PRINT_REG(my_prev));
	DebugPrintf("\t>\n");
}

bool Console::cmdSegmentInfo(int argc, const char **argv) {
	if (argc != 2) {
		DebugPrintf("Provides information on the specified segment(s)\n");
		DebugPrintf("Usage: %s <segment number>\n", argv[0]);
		DebugPrintf("<segment number> can be a number, which shows the information of the segment with\n");
		DebugPrintf("the specified number, or \"all\" to show information on all active segments");
		return true;
	}

	if (!scumm_stricmp(argv[1], "all")) {
		for (uint i = 0; i < g_EngineState->seg_manager->_heap.size(); i++)
			segmentInfo(i);
	} else {
		int nr = atoi(argv[1]);
		if (!segmentInfo(nr))
			DebugPrintf("Segment %04x does not exist\n", nr);
	}

	return true;
}


bool Console::cmdKillSegment(int argc, const char **argv) {
	if (argc != 2) {
		DebugPrintf("Deletes the specified segment\n");
		DebugPrintf("Usage: %s <segment number>\n", argv[0]);
		return true;
	}

	g_EngineState->seg_manager->getScript(atoi(argv[1]))->setLockers(0);

	return true;
}

bool Console::cmdShowMap(int argc, const char **argv) {
	if (argc != 2) {
		DebugPrintf("Shows one of the screen maps\n");
		DebugPrintf("Usage: %s <screen map>\n", argv[0]);
		DebugPrintf("Screen maps:\n");
		DebugPrintf("- 0: visual map (back buffer)\n");
		DebugPrintf("- 1: priority map (back buffer)\n");
		DebugPrintf("- 2: control map (static buffer)\n");
		return true;
	}

	gfxop_set_clip_zone(g_EngineState->gfx_state, gfx_rect_fullscreen);

	int map = atoi(argv[1]);

	switch (map) {
	case 0:
		g_EngineState->visual->add_dirty_abs((GfxContainer *)g_EngineState->visual, gfx_rect(0, 0, 320, 200), 0);
		g_EngineState->visual->draw(Common::Point(0, 0));
		break;

	case 1:
		gfx_xlate_pixmap(g_EngineState->gfx_state->pic->priority_map, g_EngineState->gfx_state->driver->mode, GFX_XLATE_FILTER_NONE);
		gfxop_draw_pixmap(g_EngineState->gfx_state, g_EngineState->gfx_state->pic->priority_map, gfx_rect(0, 0, 320, 200), Common::Point(0, 0));
		break;

	case 2:
		gfx_xlate_pixmap(g_EngineState->gfx_state->control_map, g_EngineState->gfx_state->driver->mode, GFX_XLATE_FILTER_NONE);
		gfxop_draw_pixmap(g_EngineState->gfx_state, g_EngineState->gfx_state->control_map, gfx_rect(0, 0, 320, 200), Common::Point(0, 0));
		break;

	default:
		DebugPrintf("Map %d is not available.\n", map);
		return true;
	}

	gfxop_update(g_EngineState->gfx_state);

	return false;
}

bool Console::cmdSongLib(int argc, const char **argv) {
	DebugPrintf("Song library:\n");

	song_t *seeker = *(g_EngineState->_sound._songlib.lib);

	do {
		DebugPrintf("    %p", (void *)seeker);

		if (seeker) {
			DebugPrintf("[%04lx,p=%d,s=%d]->", seeker->handle, seeker->priority, seeker->status);
			seeker = seeker->next;
		}
		DebugPrintf("\n");
	} while (seeker);
	DebugPrintf("\n");

	return true;
}

bool Console::cmdInvokeGC(int argc, const char **argv) {
	DebugPrintf("Performing garbage collection...\n");
	run_gc(g_EngineState);
	return true;
}

bool Console::cmdGCObjects(int argc, const char **argv) {
	reg_t_hash_map *use_map = find_all_used_references(g_EngineState);

	DebugPrintf("Reachable object references (normalised):\n");
	for (reg_t_hash_map::iterator i = use_map->begin(); i != use_map->end(); ++i) {
		DebugPrintf(" - %04x:%04x\n", PRINT_REG(i->_key));
	}

	delete use_map;

	return true;
}

bool Console::cmdExit(int argc, const char **argv) {
	if (argc != 2) {
		DebugPrintf("%s game - exit gracefully\n", argv[0]);
		DebugPrintf("%s now - exit ungracefully\n", argv[0]);
		return true;
	}

	if (!scumm_stricmp(argv[1], "game")) {
		// Quit gracefully
		script_abort_flag = 1; // Terminate VM
		_debugstate_valid = 0;
		_debug_seeking = 0;
		_debug_step_running = 0;

	} else if (!scumm_stricmp(argv[1], "now")) {
		// Quit ungracefully
		exit(0);
	}

	return false;
}

} // End of namespace Sci