| /******************************************************************************* |
| * Copyright (c) 2000, 2008 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-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> |
| * |
| * @jniclass flags=no_gen |
| */ |
| 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, terminate ? new char [] {ch, '\0'} : new char [] {ch}, false); |
| } |
| |
| public TCHAR (int codePage, char [] chars, boolean terminate) { |
| this.codePage = codePage; |
| int charCount = chars.length; |
| if (OS.IsUnicode) { |
| if (terminate) { |
| if (charCount == 0 || (charCount > 0 && chars [charCount - 1] != 0)) { |
| char [] newChars = new char [charCount + 1]; |
| System.arraycopy (chars, 0, newChars, 0, charCount); |
| chars = newChars; |
| } |
| } |
| 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 TCHAR (int codePage, String string, boolean terminate) { |
| this (codePage, getChars (string, terminate), false); |
| } |
| |
| static char [] getChars (String string, boolean terminate) { |
| int length = string.length (); |
| char [] chars = new char [length + (terminate ? 1 : 0)]; |
| string.getChars (0, length, chars, 0); |
| return chars; |
| } |
| |
| 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); |
| } |
| } |
| |
| } |
| |