| /* JdwpString.java -- utility class to read and write jdwp strings |
| Copyright (C) 2005 Free Software Foundation |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath 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, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package gnu.classpath.jdwp.util; |
| |
| import gnu.classpath.jdwp.exception.JdwpInternalErrorException; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.io.UnsupportedEncodingException; |
| import java.nio.ByteBuffer; |
| |
| /** |
| * A class to compute the JDWP representation of Strings. |
| * |
| * @author Aaron Luchko <aluchko@redhat.com> |
| */ |
| public class JdwpString |
| { |
| |
| /** |
| * Write this String to the outStream as a string understood by jdwp. |
| * |
| * @param os write the String here |
| * @param string the String to write |
| * @throws IOException |
| */ |
| public static void writeString(DataOutputStream os, String string) |
| throws IOException |
| { |
| // Get the bytes of the string as a string in UTF-8 |
| byte[] strBytes = string.getBytes("UTF-8"); |
| os.writeInt(strBytes.length); |
| os.write(strBytes); |
| } |
| |
| /** |
| * Read a jdwp style string from the ByteBuffer. |
| * |
| * @param bb contains the string |
| * @return the String that was read |
| * @throws JdwpInternalErrorException bb didn't contain a value UTF-8 string |
| */ |
| public static String readString(ByteBuffer bb) |
| throws JdwpInternalErrorException |
| { |
| int length = bb.getInt(); |
| byte[] strBytes = new byte[length]; |
| bb.get(strBytes); |
| try |
| { |
| return new String(strBytes, "UTF-8"); |
| } |
| catch (UnsupportedEncodingException ex) |
| { |
| // Any string from the VM should be in UTF-8 so an encoding error |
| // shouldn't be possible |
| throw new JdwpInternalErrorException(ex); |
| } |
| } |
| } |