| // |
| // ======================================================================== |
| // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.util; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.OutputStreamWriter; |
| import java.io.Writer; |
| |
| |
| /* ------------------------------------------------------------ */ |
| /** Byte Array ISO 8859 writer. |
| * This class combines the features of a OutputStreamWriter for |
| * ISO8859 encoding with that of a ByteArrayOutputStream. It avoids |
| * many inefficiencies associated with these standard library classes. |
| * It has been optimized for standard ASCII characters. |
| * |
| * |
| */ |
| public class ByteArrayISO8859Writer extends Writer |
| { |
| private byte[] _buf; |
| private int _size; |
| private ByteArrayOutputStream2 _bout=null; |
| private OutputStreamWriter _writer=null; |
| private boolean _fixed=false; |
| |
| /* ------------------------------------------------------------ */ |
| /** Constructor. |
| */ |
| public ByteArrayISO8859Writer() |
| { |
| _buf=new byte[2048]; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /** Constructor. |
| * @param capacity Buffer capacity |
| */ |
| public ByteArrayISO8859Writer(int capacity) |
| { |
| _buf=new byte[capacity]; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public ByteArrayISO8859Writer(byte[] buf) |
| { |
| _buf=buf; |
| _fixed=true; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public Object getLock() |
| { |
| return lock; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public int size() |
| { |
| return _size; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public int capacity() |
| { |
| return _buf.length; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public int spareCapacity() |
| { |
| return _buf.length-_size; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void setLength(int l) |
| { |
| _size=l; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public byte[] getBuf() |
| { |
| return _buf; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void writeTo(OutputStream out) |
| throws IOException |
| { |
| out.write(_buf,0,_size); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void write(char c) |
| throws IOException |
| { |
| ensureSpareCapacity(1); |
| if (c>=0&&c<=0x7f) |
| _buf[_size++]=(byte)c; |
| else |
| { |
| char[] ca ={c}; |
| writeEncoded(ca,0,1); |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| public void write(char[] ca) |
| throws IOException |
| { |
| ensureSpareCapacity(ca.length); |
| for (int i=0;i<ca.length;i++) |
| { |
| char c=ca[i]; |
| if (c>=0&&c<=0x7f) |
| _buf[_size++]=(byte)c; |
| else |
| { |
| writeEncoded(ca,i,ca.length-i); |
| break; |
| } |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| public void write(char[] ca,int offset, int length) |
| throws IOException |
| { |
| ensureSpareCapacity(length); |
| for (int i=0;i<length;i++) |
| { |
| char c=ca[offset+i]; |
| if (c>=0&&c<=0x7f) |
| _buf[_size++]=(byte)c; |
| else |
| { |
| writeEncoded(ca,offset+i,length-i); |
| break; |
| } |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| public void write(String s) |
| throws IOException |
| { |
| if (s==null) |
| { |
| write("null",0,4); |
| return; |
| } |
| |
| int length=s.length(); |
| ensureSpareCapacity(length); |
| for (int i=0;i<length;i++) |
| { |
| char c=s.charAt(i); |
| if (c>=0x0&&c<=0x7f) |
| _buf[_size++]=(byte)c; |
| else |
| { |
| writeEncoded(s.toCharArray(),i,length-i); |
| break; |
| } |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| public void write(String s,int offset, int length) |
| throws IOException |
| { |
| ensureSpareCapacity(length); |
| for (int i=0;i<length;i++) |
| { |
| char c=s.charAt(offset+i); |
| if (c>=0&&c<=0x7f) |
| _buf[_size++]=(byte)c; |
| else |
| { |
| writeEncoded(s.toCharArray(),offset+i,length-i); |
| break; |
| } |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| private void writeEncoded(char[] ca,int offset, int length) |
| throws IOException |
| { |
| if (_bout==null) |
| { |
| _bout = new ByteArrayOutputStream2(2*length); |
| _writer = new OutputStreamWriter(_bout,StringUtil.__ISO_8859_1); |
| } |
| else |
| _bout.reset(); |
| _writer.write(ca,offset,length); |
| _writer.flush(); |
| ensureSpareCapacity(_bout.getCount()); |
| System.arraycopy(_bout.getBuf(),0,_buf,_size,_bout.getCount()); |
| _size+=_bout.getCount(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| public void flush() |
| {} |
| |
| /* ------------------------------------------------------------ */ |
| public void resetWriter() |
| { |
| _size=0; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| public void close() |
| {} |
| |
| /* ------------------------------------------------------------ */ |
| public void destroy() |
| { |
| _buf=null; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void ensureSpareCapacity(int n) |
| throws IOException |
| { |
| if (_size+n>_buf.length) |
| { |
| if (_fixed) |
| throw new IOException("Buffer overflow: "+_buf.length); |
| byte[] buf = new byte[(_buf.length+n)*4/3]; |
| System.arraycopy(_buf,0,buf,0,_size); |
| _buf=buf; |
| } |
| } |
| |
| |
| /* ------------------------------------------------------------ */ |
| public byte[] getByteArray() |
| { |
| byte[] data=new byte[_size]; |
| System.arraycopy(_buf,0,data,0,_size); |
| return data; |
| } |
| |
| } |
| |
| |