com.java

JAKE2用ＪＡＶＡ写的queck2的３Ｄ游戏开发引擎

/*
 * Com.java
 * Copyright (C) 2003
 * 
 * $Id: Com.java,v 1.14 2005/12/16 21:17:08 salomo Exp $
 */
/*
Copyright (C) 1997-2001 Id Software, Inc.

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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
package jake2.qcommon;

import jake2.Defines;
import jake2.Globals;
import jake2.client.CL;
import jake2.client.Console;
import jake2.game.Cmd;
import jake2.server.SV_MAIN;
import jake2.sys.Sys;
import jake2.util.*;

import java.io.*;

/**
 * Com
 *
 */
public final class Com
{

    static String debugContext = "";
    static String _debugContext = "";
    
	static int com_argc;
	static String[] com_argv= new String[Defines.MAX_NUM_ARGVS];

	public abstract static class RD_Flusher
	{
		public abstract void rd_flush(int target, StringBuffer buffer);
	}

	static int rd_target;
	static StringBuffer rd_buffer;
	static int rd_buffersize;
	static RD_Flusher rd_flusher;

	public static void BeginRedirect(int target, StringBuffer buffer, int buffersize, RD_Flusher flush)
	{
		if (0 == target || null == buffer || 0 == buffersize || null == flush)
			return;

		rd_target= target;
		rd_buffer= buffer;
		rd_buffersize= buffersize;
		rd_flusher= flush;

		rd_buffer.setLength(0);
	}

	public static void EndRedirect()
	{
		rd_flusher.rd_flush(rd_target, rd_buffer);

		rd_target= 0;
		rd_buffer= null;
		rd_buffersize= 0;
		rd_flusher= null;
	}

	static boolean recursive= false;

	static String msg= "";

	// helper class to replace the pointer-pointer
	public static class ParseHelp
	{
		public ParseHelp(String in)
		{
			if (in == null)
			{
				data= null;
				length = 0;
			}
			else
			{
				data= in.toCharArray();
				length = data.length;
			}
			index= 0;
		}

		public ParseHelp(char in[])
		{
			this(in, 0);
		}

		public ParseHelp(char in[], int offset)
		{
			data= in;
			index= offset;
			if (data != null) length = data.length;
			else length = 0;
		}

		public char getchar()
		{
		    if (index < length) {
		        return data[index];
		    }
		    return 0;			
		}

		public char nextchar()
		{
			// faster than if
		    index++;
		    if (index < length) {
		        return data[index];
		    }
		    return 0;
		}
		
		public char prevchar() {
			if (index > 0) 
			{
				index--;
				return data[index];
			}
			return 0;					
		}

		public boolean isEof()
		{
			return index >= length;
		}

		public int index;
		public char data[];
		private int length;

		public char skipwhites()
		{
			char c = 0;
			while ( index < length && ((c= data[index]) <= ' ') && c != 0)
				index++;
			return c;
		}

		public char skipwhitestoeol()
		{
			char c = 0;
			while ( index < length &&((c= data[index]) <= ' ') && c != '\n' && c != 0)
				index++;
			return c;
		}

		public char skiptoeol()
		{
			char c = 0;
			while ( index < length &&(c= data[index]) != '\n' && c != 0)
				index++;
			return c;
		}
	}

	public static char com_token[]= new char[Defines.MAX_TOKEN_CHARS];

	// See GameSpanw.ED_ParseEdict() to see how to use it now.
	public static String Parse(ParseHelp hlp) {
		int c;
		int len = 0;

		if (hlp.data == null) {
			return "";
		}

		while (true) {
			//	   skip whitespace
			hlp.skipwhites();
			if (hlp.isEof()) {
			    hlp.data = null;
			    return "";
			}

			//	   skip // comments
			if (hlp.getchar() == '/') {
				if (hlp.nextchar() == '/') {
					hlp.skiptoeol();
					// goto skip whitespace
					continue;
				} else {
					hlp.prevchar();
					break;
				}
			} else
				break;
		}

		//	   handle quoted strings specially
		if (hlp.getchar() == '\"') {
			hlp.nextchar();
			while (true) {
				c = hlp.getchar();
				hlp.nextchar();
				if (c == '\"' || c == 0) {
					return new String(com_token, 0, len);
				}
				if (len < Defines.MAX_TOKEN_CHARS) {
					com_token[len] = (char) c;
					len++;
				}
			}
		}

		//	   parse a regular word
		c = hlp.getchar();
		do {
			if (len < Defines.MAX_TOKEN_CHARS) {
				com_token[len] = (char) c;
				len++;
			}
			c = hlp.nextchar();
		} while (c > 32);

		if (len == Defines.MAX_TOKEN_CHARS) {
			Com.Printf("Token exceeded " + Defines.MAX_TOKEN_CHARS + " chars, discarded.\n");
			len = 0;
		}

		return new String(com_token, 0, len);
	}

	public static xcommand_t Error_f= new xcommand_t()
	{
		public void execute() throws longjmpException
		{
			Error(Defines.ERR_FATAL, Cmd.Argv(1));
		}
	};

	public static void Error(int code, String fmt) throws longjmpException
	{
		Error(code, fmt, null);
	}

	public static void Error(int code, String fmt, Vargs vargs) throws longjmpException
	{
		// va_list argptr;
		// static char msg[MAXPRINTMSG];

		if (recursive)
		{
			Sys.Error("recursive error after: " + msg);
		}
		recursive= true;

		msg= sprintf(fmt, vargs);

		if (code == Defines.ERR_DISCONNECT)
		{
			CL.Drop();
			recursive= false;
			throw new longjmpException();
		}
		else if (code == Defines.ERR_DROP)
		{
			Com.Printf("********************\nERROR: " + msg + "\n********************\n");
			SV_MAIN.SV_Shutdown("Server crashed: " + msg + "\n", false);
			CL.Drop();
			recursive= false;
			throw new longjmpException();
		}
		else
		{
			SV_MAIN.SV_Shutdown("Server fatal crashed: %s" + msg + "\n", false);
			CL.Shutdown();
		}

		Sys.Error(msg);
	}

	/**
	 * Com_InitArgv checks the number of command line arguments
	 * and copies all arguments with valid length into com_argv.
	 */
	static void InitArgv(String[] args) throws longjmpException
	{

		if (args.length > Defines.MAX_NUM_ARGVS)
		{
			Com.Error(Defines.ERR_FATAL, "argc > MAX_NUM_ARGVS");
		}

		Com.com_argc= args.length;
		for (int i= 0; i < Com.com_argc; i++)
		{
			if (args[i].length() >= Defines.MAX_TOKEN_CHARS)
				Com.com_argv[i]= "";
			else
				Com.com_argv[i]= args[i];
		}
	}

	public static void DPrintf(String fmt)
	{
	    _debugContext = debugContext;
		DPrintf(fmt, null);
		_debugContext = "";
	}
	
	public static void dprintln(String fmt)
	{
		DPrintf(_debugContext + fmt + "\n", null);
	}

	public static void Printf(String fmt)
	{
		Printf(_debugContext + fmt, null);
	}

	public static void DPrintf(String fmt, Vargs vargs)
	{
		if (Globals.developer == null || Globals.developer.value == 0)
			return; // don't confuse non-developers with techie stuff...
		_debugContext = debugContext;
		Printf(fmt, vargs);
		_debugContext="";
	}

	/** Prints out messages, which can also be redirected to a remote client. */
	public static void Printf(String fmt, Vargs vargs)
	{
		String msg= sprintf(_debugContext + fmt, vargs);
		if (rd_target != 0)
		{
			if ((msg.length() + rd_buffer.length()) > (rd_buffersize - 1))
			{
				rd_flusher.rd_flush(rd_target, rd_buffer);
				rd_buffer.setLength(0);
			}
			rd_buffer.append(msg);
			return;
		}

		Console.Print(msg);