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<a class="jxr_linenumber" name="1" href="#1">1</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="2" href="#2">2</a> <em class="jxr_javadoccomment">* @@@ START COPYRIGHT @@@</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>
<a class="jxr_linenumber" name="4" href="#4">4</a> <em class="jxr_javadoccomment">Licensed to the Apache Software Foundation (ASF) under one</em>
<a class="jxr_linenumber" name="5" href="#5">5</a> <em class="jxr_javadoccomment">or more contributor license agreements. See the NOTICE file</em>
<a class="jxr_linenumber" name="6" href="#6">6</a> <em class="jxr_javadoccomment">distributed with this work for additional information</em>
<a class="jxr_linenumber" name="7" href="#7">7</a> <em class="jxr_javadoccomment">regarding copyright ownership. The ASF licenses this file</em>
<a class="jxr_linenumber" name="8" href="#8">8</a> <em class="jxr_javadoccomment">to you under the Apache License, Version 2.0 (the</em>
<a class="jxr_linenumber" name="9" href="#9">9</a> <em class="jxr_javadoccomment">"License"); you may not use this file except in compliance</em>
<a class="jxr_linenumber" name="10" href="#10">10</a> <em class="jxr_javadoccomment">with the License. You may obtain a copy of the License at</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>
<a class="jxr_linenumber" name="12" href="#12">12</a> <em class="jxr_javadoccomment"> <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="13" href="#13">13</a>
<a class="jxr_linenumber" name="14" href="#14">14</a> <em class="jxr_javadoccomment">Unless required by applicable law or agreed to in writing,</em>
<a class="jxr_linenumber" name="15" href="#15">15</a> <em class="jxr_javadoccomment">software distributed under the License is distributed on an</em>
<a class="jxr_linenumber" name="16" href="#16">16</a> <em class="jxr_javadoccomment">"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</em>
<a class="jxr_linenumber" name="17" href="#17">17</a> <em class="jxr_javadoccomment">KIND, either express or implied. See the License for the</em>
<a class="jxr_linenumber" name="18" href="#18">18</a> <em class="jxr_javadoccomment">specific language governing permissions and limitations</em>
<a class="jxr_linenumber" name="19" href="#19">19</a> <em class="jxr_javadoccomment">under the License.</em>
<a class="jxr_linenumber" name="20" href="#20">20</a>
<a class="jxr_linenumber" name="21" href="#21">21</a> <em class="jxr_javadoccomment">* @@@ END COPYRIGHT @@@</em>
<a class="jxr_linenumber" name="22" href="#22">22</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="23" href="#23">23</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="24" href="#24">24</a> <em class="jxr_javadoccomment"> * Licensed to the Apache Software Foundation (ASF) under one</em>
<a class="jxr_linenumber" name="25" href="#25">25</a> <em class="jxr_javadoccomment"> * or more contributor license agreements. See the NOTICE file</em>
<a class="jxr_linenumber" name="26" href="#26">26</a> <em class="jxr_javadoccomment"> * distributed with this work for additional information</em>
<a class="jxr_linenumber" name="27" href="#27">27</a> <em class="jxr_javadoccomment"> * regarding copyright ownership. The ASF licenses this file</em>
<a class="jxr_linenumber" name="28" href="#28">28</a> <em class="jxr_javadoccomment"> * to you under the Apache License, Version 2.0 (the</em>
<a class="jxr_linenumber" name="29" href="#29">29</a> <em class="jxr_javadoccomment"> * "License"); you may not use this file except in compliance</em>
<a class="jxr_linenumber" name="30" href="#30">30</a> <em class="jxr_javadoccomment"> * with the License. You may obtain a copy of the License at</em>
<a class="jxr_linenumber" name="31" href="#31">31</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="32" href="#32">32</a> <em class="jxr_javadoccomment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="33" href="#33">33</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="34" href="#34">34</a> <em class="jxr_javadoccomment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="35" href="#35">35</a> <em class="jxr_javadoccomment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a class="jxr_linenumber" name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a class="jxr_linenumber" name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * See the License for the specific language governing permissions and</em>
<a class="jxr_linenumber" name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * limitations under the License.</em>
<a class="jxr_linenumber" name="39" href="#39">39</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="40" href="#40">40</a> <strong class="jxr_keyword">package</strong> org.trafodion.dcs.http;
<a class="jxr_linenumber" name="41" href="#41">41</a>
<a class="jxr_linenumber" name="42" href="#42">42</a> <strong class="jxr_keyword">import</strong> java.io.ByteArrayOutputStream;
<a class="jxr_linenumber" name="43" href="#43">43</a> <strong class="jxr_keyword">import</strong> java.io.IOException;
<a class="jxr_linenumber" name="44" href="#44">44</a> <strong class="jxr_keyword">import</strong> java.io.OutputStream;
<a class="jxr_linenumber" name="45" href="#45">45</a>
<a class="jxr_linenumber" name="46" href="#46">46</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="47" href="#47">47</a> <em class="jxr_javadoccomment"> * This class is responsible for quoting HTML characters.</em>
<a class="jxr_linenumber" name="48" href="#48">48</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="49" href="#49">49</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/trafodion/dcs/http/HtmlQuoting.html">HtmlQuoting</a> {
<a class="jxr_linenumber" name="50" href="#50">50</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> byte[] ampBytes = <span class="jxr_string">"&amp;amp;"</span>.getBytes();
<a class="jxr_linenumber" name="51" href="#51">51</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> byte[] aposBytes = <span class="jxr_string">"&amp;apos;"</span>.getBytes();
<a class="jxr_linenumber" name="52" href="#52">52</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> byte[] gtBytes = <span class="jxr_string">"&amp;gt;"</span>.getBytes();
<a class="jxr_linenumber" name="53" href="#53">53</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> byte[] ltBytes = <span class="jxr_string">"&amp;lt;"</span>.getBytes();
<a class="jxr_linenumber" name="54" href="#54">54</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> byte[] quotBytes = <span class="jxr_string">"&amp;quot;"</span>.getBytes();
<a class="jxr_linenumber" name="55" href="#55">55</a>
<a class="jxr_linenumber" name="56" href="#56">56</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="57" href="#57">57</a> <em class="jxr_javadoccomment"> * Does the given string need to be quoted?</em>
<a class="jxr_linenumber" name="58" href="#58">58</a> <em class="jxr_javadoccomment"> * @param data the string to check</em>
<a class="jxr_linenumber" name="59" href="#59">59</a> <em class="jxr_javadoccomment"> * @param off the starting position</em>
<a class="jxr_linenumber" name="60" href="#60">60</a> <em class="jxr_javadoccomment"> * @param len the number of bytes to check</em>
<a class="jxr_linenumber" name="61" href="#61">61</a> <em class="jxr_javadoccomment"> * @return does the string contain any of the active html characters?</em>
<a class="jxr_linenumber" name="62" href="#62">62</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="63" href="#63">63</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> needsQuoting(byte[] data, <strong class="jxr_keyword">int</strong> off, <strong class="jxr_keyword">int</strong> len) {
<a class="jxr_linenumber" name="64" href="#64">64</a> <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i=off; i&lt; off+len; ++i) {
<a class="jxr_linenumber" name="65" href="#65">65</a> <strong class="jxr_keyword">switch</strong>(data[i]) {
<a class="jxr_linenumber" name="66" href="#66">66</a> <strong class="jxr_keyword">case</strong> '&amp;':
<a class="jxr_linenumber" name="67" href="#67">67</a> <strong class="jxr_keyword">case</strong> '&lt;':
<a class="jxr_linenumber" name="68" href="#68">68</a> <strong class="jxr_keyword">case</strong> '&gt;':
<a class="jxr_linenumber" name="69" href="#69">69</a> <strong class="jxr_keyword">case</strong> '\'':
<a class="jxr_linenumber" name="70" href="#70">70</a> <strong class="jxr_keyword">case</strong> '&quot;':
<a class="jxr_linenumber" name="71" href="#71">71</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="72" href="#72">72</a> <strong class="jxr_keyword">default</strong>:
<a class="jxr_linenumber" name="73" href="#73">73</a> <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="74" href="#74">74</a> }
<a class="jxr_linenumber" name="75" href="#75">75</a> }
<a class="jxr_linenumber" name="76" href="#76">76</a> <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="77" href="#77">77</a> }
<a class="jxr_linenumber" name="78" href="#78">78</a>
<a class="jxr_linenumber" name="79" href="#79">79</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="80" href="#80">80</a> <em class="jxr_javadoccomment"> * Does the given string need to be quoted?</em>
<a class="jxr_linenumber" name="81" href="#81">81</a> <em class="jxr_javadoccomment"> * @param str the string to check</em>
<a class="jxr_linenumber" name="82" href="#82">82</a> <em class="jxr_javadoccomment"> * @return does the string contain any of the active html characters?</em>
<a class="jxr_linenumber" name="83" href="#83">83</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="84" href="#84">84</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> needsQuoting(String str) {
<a class="jxr_linenumber" name="85" href="#85">85</a> <strong class="jxr_keyword">if</strong> (str == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="86" href="#86">86</a> <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="87" href="#87">87</a> }
<a class="jxr_linenumber" name="88" href="#88">88</a> byte[] bytes = str.getBytes();
<a class="jxr_linenumber" name="89" href="#89">89</a> <strong class="jxr_keyword">return</strong> needsQuoting(bytes, 0 , bytes.length);
<a class="jxr_linenumber" name="90" href="#90">90</a> }
<a class="jxr_linenumber" name="91" href="#91">91</a>
<a class="jxr_linenumber" name="92" href="#92">92</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="93" href="#93">93</a> <em class="jxr_javadoccomment"> * Quote all of the active HTML characters in the given string as they</em>
<a class="jxr_linenumber" name="94" href="#94">94</a> <em class="jxr_javadoccomment"> * are added to the buffer.</em>
<a class="jxr_linenumber" name="95" href="#95">95</a> <em class="jxr_javadoccomment"> * @param output the stream to write the output to</em>
<a class="jxr_linenumber" name="96" href="#96">96</a> <em class="jxr_javadoccomment"> * @param buffer the byte array to take the characters from</em>
<a class="jxr_linenumber" name="97" href="#97">97</a> <em class="jxr_javadoccomment"> * @param off the index of the first byte to quote</em>
<a class="jxr_linenumber" name="98" href="#98">98</a> <em class="jxr_javadoccomment"> * @param len the number of bytes to quote</em>
<a class="jxr_linenumber" name="99" href="#99">99</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="100" href="#100">100</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> quoteHtmlChars(OutputStream output, byte[] buffer,
<a class="jxr_linenumber" name="101" href="#101">101</a> <strong class="jxr_keyword">int</strong> off, <strong class="jxr_keyword">int</strong> len) <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="102" href="#102">102</a> <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i=off; i &lt; off+len; i++) {
<a class="jxr_linenumber" name="103" href="#103">103</a> <strong class="jxr_keyword">switch</strong> (buffer[i]) {
<a class="jxr_linenumber" name="104" href="#104">104</a> <strong class="jxr_keyword">case</strong> '&amp;': output.write(ampBytes); <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="105" href="#105">105</a> <strong class="jxr_keyword">case</strong> '&lt;': output.write(ltBytes); <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="106" href="#106">106</a> <strong class="jxr_keyword">case</strong> '&gt;': output.write(gtBytes); <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="107" href="#107">107</a> <strong class="jxr_keyword">case</strong> '\'': output.write(aposBytes); <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="108" href="#108">108</a> <strong class="jxr_keyword">case</strong> '&quot;': output.write(quotBytes); <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="109" href="#109">109</a> <strong class="jxr_keyword">default</strong>: output.write(buffer, i, 1);
<a class="jxr_linenumber" name="110" href="#110">110</a> }
<a class="jxr_linenumber" name="111" href="#111">111</a> }
<a class="jxr_linenumber" name="112" href="#112">112</a> }
<a class="jxr_linenumber" name="113" href="#113">113</a>
<a class="jxr_linenumber" name="114" href="#114">114</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="115" href="#115">115</a> <em class="jxr_javadoccomment"> * Quote the given item to make it html-safe.</em>
<a class="jxr_linenumber" name="116" href="#116">116</a> <em class="jxr_javadoccomment"> * @param item the string to quote</em>
<a class="jxr_linenumber" name="117" href="#117">117</a> <em class="jxr_javadoccomment"> * @return the quoted string</em>
<a class="jxr_linenumber" name="118" href="#118">118</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="119" href="#119">119</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String quoteHtmlChars(String item) {
<a class="jxr_linenumber" name="120" href="#120">120</a> <strong class="jxr_keyword">if</strong> (item == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="121" href="#121">121</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="122" href="#122">122</a> }
<a class="jxr_linenumber" name="123" href="#123">123</a> byte[] bytes = item.getBytes();
<a class="jxr_linenumber" name="124" href="#124">124</a> <strong class="jxr_keyword">if</strong> (needsQuoting(bytes, 0, bytes.length)) {
<a class="jxr_linenumber" name="125" href="#125">125</a> ByteArrayOutputStream buffer = <strong class="jxr_keyword">new</strong> ByteArrayOutputStream();
<a class="jxr_linenumber" name="126" href="#126">126</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="127" href="#127">127</a> quoteHtmlChars(buffer, bytes, 0, bytes.length);
<a class="jxr_linenumber" name="128" href="#128">128</a> } <strong class="jxr_keyword">catch</strong> (IOException ioe) {
<a class="jxr_linenumber" name="129" href="#129">129</a> <em class="jxr_comment">// Won't happen, since it is a bytearrayoutputstream</em>
<a class="jxr_linenumber" name="130" href="#130">130</a> }
<a class="jxr_linenumber" name="131" href="#131">131</a> <strong class="jxr_keyword">return</strong> buffer.toString();
<a class="jxr_linenumber" name="132" href="#132">132</a> } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="133" href="#133">133</a> <strong class="jxr_keyword">return</strong> item;
<a class="jxr_linenumber" name="134" href="#134">134</a> }
<a class="jxr_linenumber" name="135" href="#135">135</a> }
<a class="jxr_linenumber" name="136" href="#136">136</a>
<a class="jxr_linenumber" name="137" href="#137">137</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="138" href="#138">138</a> <em class="jxr_javadoccomment"> * Return an output stream that quotes all of the output.</em>
<a class="jxr_linenumber" name="139" href="#139">139</a> <em class="jxr_javadoccomment"> * @param out the stream to write the quoted output to</em>
<a class="jxr_linenumber" name="140" href="#140">140</a> <em class="jxr_javadoccomment"> * @return a new stream that the application show write to</em>
<a class="jxr_linenumber" name="141" href="#141">141</a> <em class="jxr_javadoccomment"> * @throws IOException if the underlying output fails</em>
<a class="jxr_linenumber" name="142" href="#142">142</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="143" href="#143">143</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> OutputStream quoteOutputStream(<strong class="jxr_keyword">final</strong> OutputStream out
<a class="jxr_linenumber" name="144" href="#144">144</a> ) <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="145" href="#145">145</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> OutputStream() {
<a class="jxr_linenumber" name="146" href="#146">146</a> <strong class="jxr_keyword">private</strong> byte[] data = <strong class="jxr_keyword">new</strong> byte[1];
<a class="jxr_linenumber" name="147" href="#147">147</a> @Override
<a class="jxr_linenumber" name="148" href="#148">148</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> write(byte[] data, <strong class="jxr_keyword">int</strong> off, <strong class="jxr_keyword">int</strong> len) <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="149" href="#149">149</a> quoteHtmlChars(out, data, off, len);
<a class="jxr_linenumber" name="150" href="#150">150</a> }
<a class="jxr_linenumber" name="151" href="#151">151</a>
<a class="jxr_linenumber" name="152" href="#152">152</a> @Override
<a class="jxr_linenumber" name="153" href="#153">153</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> write(<strong class="jxr_keyword">int</strong> b) <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="154" href="#154">154</a> data[0] = (byte) b;
<a class="jxr_linenumber" name="155" href="#155">155</a> quoteHtmlChars(out, data, 0, 1);
<a class="jxr_linenumber" name="156" href="#156">156</a> }
<a class="jxr_linenumber" name="157" href="#157">157</a>
<a class="jxr_linenumber" name="158" href="#158">158</a> @Override
<a class="jxr_linenumber" name="159" href="#159">159</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> flush() <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="160" href="#160">160</a> out.flush();
<a class="jxr_linenumber" name="161" href="#161">161</a> }
<a class="jxr_linenumber" name="162" href="#162">162</a>
<a class="jxr_linenumber" name="163" href="#163">163</a> @Override
<a class="jxr_linenumber" name="164" href="#164">164</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> close() <strong class="jxr_keyword">throws</strong> IOException {
<a class="jxr_linenumber" name="165" href="#165">165</a> out.close();
<a class="jxr_linenumber" name="166" href="#166">166</a> }
<a class="jxr_linenumber" name="167" href="#167">167</a> };
<a class="jxr_linenumber" name="168" href="#168">168</a> }
<a class="jxr_linenumber" name="169" href="#169">169</a>
<a class="jxr_linenumber" name="170" href="#170">170</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="171" href="#171">171</a> <em class="jxr_javadoccomment"> * Remove HTML quoting from a string.</em>
<a class="jxr_linenumber" name="172" href="#172">172</a> <em class="jxr_javadoccomment"> * @param item the string to unquote</em>
<a class="jxr_linenumber" name="173" href="#173">173</a> <em class="jxr_javadoccomment"> * @return the unquoted string</em>
<a class="jxr_linenumber" name="174" href="#174">174</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="175" href="#175">175</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String unquoteHtmlChars(String item) {
<a class="jxr_linenumber" name="176" href="#176">176</a> <strong class="jxr_keyword">if</strong> (item == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="177" href="#177">177</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="178" href="#178">178</a> }
<a class="jxr_linenumber" name="179" href="#179">179</a> <strong class="jxr_keyword">int</strong> next = item.indexOf('&amp;');
<a class="jxr_linenumber" name="180" href="#180">180</a> <em class="jxr_comment">// nothing was quoted</em>
<a class="jxr_linenumber" name="181" href="#181">181</a> <strong class="jxr_keyword">if</strong> (next == -1) {
<a class="jxr_linenumber" name="182" href="#182">182</a> <strong class="jxr_keyword">return</strong> item;
<a class="jxr_linenumber" name="183" href="#183">183</a> }
<a class="jxr_linenumber" name="184" href="#184">184</a> <strong class="jxr_keyword">int</strong> len = item.length();
<a class="jxr_linenumber" name="185" href="#185">185</a> <strong class="jxr_keyword">int</strong> posn = 0;
<a class="jxr_linenumber" name="186" href="#186">186</a> StringBuilder buffer = <strong class="jxr_keyword">new</strong> StringBuilder();
<a class="jxr_linenumber" name="187" href="#187">187</a> <strong class="jxr_keyword">while</strong> (next != -1) {
<a class="jxr_linenumber" name="188" href="#188">188</a> buffer.append(item.substring(posn, next));
<a class="jxr_linenumber" name="189" href="#189">189</a> <strong class="jxr_keyword">if</strong> (item.startsWith(<span class="jxr_string">"&amp;amp;"</span>, next)) {
<a class="jxr_linenumber" name="190" href="#190">190</a> buffer.append('&amp;');
<a class="jxr_linenumber" name="191" href="#191">191</a> next += 5;
<a class="jxr_linenumber" name="192" href="#192">192</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (item.startsWith(<span class="jxr_string">"&amp;apos;"</span>, next)) {
<a class="jxr_linenumber" name="193" href="#193">193</a> buffer.append('\'');
<a class="jxr_linenumber" name="194" href="#194">194</a> next += 6;
<a class="jxr_linenumber" name="195" href="#195">195</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (item.startsWith(<span class="jxr_string">"&amp;gt;"</span>, next)) {
<a class="jxr_linenumber" name="196" href="#196">196</a> buffer.append('&gt;');
<a class="jxr_linenumber" name="197" href="#197">197</a> next += 4;
<a class="jxr_linenumber" name="198" href="#198">198</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (item.startsWith(<span class="jxr_string">"&amp;lt;"</span>, next)) {
<a class="jxr_linenumber" name="199" href="#199">199</a> buffer.append('&lt;');
<a class="jxr_linenumber" name="200" href="#200">200</a> next += 4;
<a class="jxr_linenumber" name="201" href="#201">201</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (item.startsWith(<span class="jxr_string">"&amp;quot;"</span>, next)) {
<a class="jxr_linenumber" name="202" href="#202">202</a> buffer.append('&quot;');
<a class="jxr_linenumber" name="203" href="#203">203</a> next += 6;
<a class="jxr_linenumber" name="204" href="#204">204</a> } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="205" href="#205">205</a> <strong class="jxr_keyword">int</strong> end = item.indexOf(';', next)+1;
<a class="jxr_linenumber" name="206" href="#206">206</a> <strong class="jxr_keyword">if</strong> (end == 0) {
<a class="jxr_linenumber" name="207" href="#207">207</a> end = len;
<a class="jxr_linenumber" name="208" href="#208">208</a> }
<a class="jxr_linenumber" name="209" href="#209">209</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Bad HTML quoting for "</span> +
<a class="jxr_linenumber" name="210" href="#210">210</a> item.substring(next,end));
<a class="jxr_linenumber" name="211" href="#211">211</a> }
<a class="jxr_linenumber" name="212" href="#212">212</a> posn = next;
<a class="jxr_linenumber" name="213" href="#213">213</a> next = item.indexOf('&amp;', posn);
<a class="jxr_linenumber" name="214" href="#214">214</a> }
<a class="jxr_linenumber" name="215" href="#215">215</a> buffer.append(item.substring(posn, len));
<a class="jxr_linenumber" name="216" href="#216">216</a> <strong class="jxr_keyword">return</strong> buffer.toString();
<a class="jxr_linenumber" name="217" href="#217">217</a> }
<a class="jxr_linenumber" name="218" href="#218">218</a>
<a class="jxr_linenumber" name="219" href="#219">219</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> main(String[] args) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="220" href="#220">220</a> <strong class="jxr_keyword">for</strong>(String arg:args) {
<a class="jxr_linenumber" name="221" href="#221">221</a> System.out.println(<span class="jxr_string">"Original: "</span> + arg);
<a class="jxr_linenumber" name="222" href="#222">222</a> String quoted = quoteHtmlChars(arg);
<a class="jxr_linenumber" name="223" href="#223">223</a> System.out.println(<span class="jxr_string">"Quoted: "</span>+ quoted);
<a class="jxr_linenumber" name="224" href="#224">224</a> String unquoted = unquoteHtmlChars(quoted);
<a class="jxr_linenumber" name="225" href="#225">225</a> System.out.println(<span class="jxr_string">"Unquoted: "</span> + unquoted);
<a class="jxr_linenumber" name="226" href="#226">226</a> System.out.println();
<a class="jxr_linenumber" name="227" href="#227">227</a> }
<a class="jxr_linenumber" name="228" href="#228">228</a> }
<a class="jxr_linenumber" name="229" href="#229">229</a> }
</pre>
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