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annotate src/org/eclipse/jetty/util/Utf8StringBuilder.java @ 1045:48506d03e230

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tutorial fix
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 06 Nov 2016 14:54:43 -0700
parents 3428c60d7cfc
children
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1 //
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2 // ========================================================================
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
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4 // ------------------------------------------------------------------------
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5 // All rights reserved. This program and the accompanying materials
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6 // are made available under the terms of the Eclipse Public License v1.0
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7 // and Apache License v2.0 which accompanies this distribution.
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8 //
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9 // The Eclipse Public License is available at
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10 // http://www.eclipse.org/legal/epl-v10.html
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11 //
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12 // The Apache License v2.0 is available at
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13 // http://www.opensource.org/licenses/apache2.0.php
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14 //
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15 // You may elect to redistribute this code under either of these licenses.
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16 // ========================================================================
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17 //
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18
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19 package org.eclipse.jetty.util;
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20
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21
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22 /* ------------------------------------------------------------ */
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23 /** UTF-8 StringBuilder.
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24 *
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25 * This class wraps a standard {@link java.lang.StringBuilder} and provides methods to append
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26 * UTF-8 encoded bytes, that are converted into characters.
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27 *
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28 * This class is stateful and up to 4 calls to {@link #append(byte)} may be needed before
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29 * state a character is appended to the string buffer.
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30 *
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31 * The UTF-8 decoding is done by this class and no additional buffers or Readers are used.
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32 * The UTF-8 code was inspired by http://bjoern.hoehrmann.de/utf-8/decoder/dfa/
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33 *
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34 */
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35 public class Utf8StringBuilder extends Utf8Appendable
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36 {
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37 final StringBuilder _buffer;
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38
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39 public Utf8StringBuilder()
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40 {
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41 super(new StringBuilder());
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42 _buffer=(StringBuilder)_appendable;
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43 }
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44
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45 public Utf8StringBuilder(int capacity)
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46 {
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47 super(new StringBuilder(capacity));
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48 _buffer=(StringBuilder)_appendable;
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49 }
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50
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51 @Override
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52 public int length()
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53 {
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54 return _buffer.length();
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55 }
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56
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57 @Override
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58 public void reset()
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59 {
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60 super.reset();
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61 _buffer.setLength(0);
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62 }
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63
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64 public StringBuilder getStringBuilder()
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65 {
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66 checkState();
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67 return _buffer;
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68 }
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69
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70 @Override
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71 public String toString()
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72 {
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73 checkState();
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74 return _buffer.toString();
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75 }
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76
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77
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78 }