/* * SZ.java * Copyright (C) 2003 * * $Id: SZ.java,v 1.1 2004-07-07 19:59:33 hzi 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 java.util.Arrays; import jake2.Defines; /** * SZ */ public final class SZ { public static void Clear(sizebuf_t buf) { buf.clear(); } //=========================================================================== public static void Init(sizebuf_t buf, byte data[], int length) { //memset (buf, 0, sizeof(*buf)); //TODO: slow but safe; Arrays.fill(data,(byte)0); buf.data = data; buf.maxsize = length; } /** Ask for the pointer using sizebuf_t.cursize (RST) */ public static int GetSpace(sizebuf_t buf, int length) { int oldsize; if (buf.cursize + length > buf.maxsize) { if (!buf.allowoverflow) Com.Error(Defines.ERR_FATAL, "SZ_GetSpace: overflow without allowoverflow set"); if (length > buf.maxsize) Com.Error(Defines.ERR_FATAL, "SZ_GetSpace: " + length + " is > full buffer size"); Com.Printf("SZ_GetSpace: overflow\n"); Clear(buf); buf.overflowed = true; } oldsize = buf.cursize; buf.cursize += length; return oldsize; } public static void Write(sizebuf_t buf, byte data[], int length) { //memcpy(SZ_GetSpace(buf, length), data, length); System.arraycopy(data, 0, buf.data, GetSpace(buf, length), length); } public static void Write(sizebuf_t buf, byte data[], int offset, int length) { System.arraycopy(data, offset, buf.data, GetSpace(buf, length), length); } public static void Write(sizebuf_t buf, byte data[]) { int length = data.length; //memcpy(SZ_GetSpace(buf, length), data, length); System.arraycopy(data, 0, buf.data, GetSpace(buf, length), length); } // public static void Print(sizebuf_t buf, String data) { int length = data.length(); byte str[] = data.getBytes(); if (buf.cursize != 0) { if (buf.data[buf.cursize - 1] != 0) { //memcpy( SZ_GetSpace(buf, len), data, len); // no trailing 0 System.arraycopy(str, 0, buf.data, GetSpace(buf, length+1), length); } else { System.arraycopy(str, 0, buf.data, GetSpace(buf, length)-1, length); //memcpy(SZ_GetSpace(buf, len - 1) - 1, data, len); // write over trailing 0 } } else // first print. System.arraycopy(str, 0, buf.data, GetSpace(buf, length), length); //memcpy(SZ_GetSpace(buf, len), data, len); buf.data[buf.cursize - 1]=0; } }