/******************************************************************************* * Copyright (c) 2000, 2003 IBM Corporation and others. * All rights reserved. This program and the accompanying materials  * are made available under the terms of the Common Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/cpl-v10.html *  * Contributors: *     IBM Corporation - initial API and implementation *******************************************************************************/package org.eclipse.swt.internal.win32;/** * This class implements the conversions between unicode characters * and the <em>platform supported</em> representation for characters. * <p> * Note that, unicode characters which can not be found in the platform * encoding will be converted to an arbitrary platform specific character. * </p> */public class TCHAR {	int codePage;public char [] chars;public byte [] bytes;int byteCount;public final static int sizeof = OS.IsUnicode ? 2 : 1;public TCHAR (int codePage, int length) {	this.codePage = codePage;	if (OS.IsUnicode) {		chars = new char [length];	} else {		bytes = new byte [byteCount = length];	}}public TCHAR (int codePage, char ch, boolean terminate) {	this (codePage, String.valueOf (ch), terminate);}public TCHAR (int codePage, String string, boolean terminate) {	this.codePage = codePage;	int charCount = string.length ();	char [] chars = new char [charCount + (terminate ? 1 : 0)];	string.getChars (0, charCount, chars, 0);	if (OS.IsUnicode) {		this.chars = chars;	} else {		int cp = codePage != 0 ? codePage : OS.CP_ACP;		bytes = new byte [byteCount = charCount * 2 + (terminate ? 1 : 0)];		byteCount = OS.WideCharToMultiByte (cp, 0, chars, charCount, bytes, byteCount, null, null);		if (terminate) byteCount++;	}}public int length () {	if (OS.IsUnicode) {		return chars.length;	} else {		return byteCount;	}}public int strlen () {	if (OS.IsUnicode) {		for (int i=0; i<chars.length; i++) {			if (chars [i] == '\0') return i;		}		return chars.length;	} else {		for (int i=0; i<byteCount; i++) {			if (bytes [i] == '\0') return i;		}		return byteCount;	}}public int tcharAt (int index) {	if (OS.IsUnicode) {		return chars [index];	} else {		int ch = bytes [index] & 0xFF;		if (OS.IsDBCSLeadByte ((byte) ch)) {			ch = ch << 8 | (bytes [index + 1] & 0xFF);		}		return ch;	}}public String toString () {	return toString (0, length ());}public String toString (int start, int length) {	if (OS.IsUnicode) {		return new String (chars, start, length);	} else {		byte [] bytes = this.bytes;		if (start != 0) {			bytes = new byte [length];			System.arraycopy (this.bytes, start, bytes, 0, length);		}		char [] chars = new char [length];		int cp = codePage != 0 ? codePage : OS.CP_ACP;		int charCount = OS.MultiByteToWideChar (cp, OS.MB_PRECOMPOSED, bytes, length, chars, length);		return new String (chars, 0, charCount);	}}}