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| <a class="jxr_linenumber" name="1" href="#1">1</a> <em class="jxr_comment">/*</em> |
| <a class="jxr_linenumber" name="2" href="#2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one</em> |
| <a class="jxr_linenumber" name="3" href="#3">3</a> <em class="jxr_comment"> * or more contributor license agreements. See the NOTICE file</em> |
| <a class="jxr_linenumber" name="4" href="#4">4</a> <em class="jxr_comment"> * distributed with this work for additional information</em> |
| <a class="jxr_linenumber" name="5" href="#5">5</a> <em class="jxr_comment"> * regarding copyright ownership. The ASF licenses this file</em> |
| <a class="jxr_linenumber" name="6" href="#6">6</a> <em class="jxr_comment"> * to you under the Apache License, Version 2.0 (the</em> |
| <a class="jxr_linenumber" name="7" href="#7">7</a> <em class="jxr_comment"> * "License"); you may not use this file except in compliance</em> |
| <a class="jxr_linenumber" name="8" href="#8">8</a> <em class="jxr_comment"> * with the License. You may obtain a copy of the License at</em> |
| <a class="jxr_linenumber" name="9" href="#9">9</a> <em class="jxr_comment"> *</em> |
| <a class="jxr_linenumber" name="10" href="#10">10</a> <em class="jxr_comment"> * <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="11" href="#11">11</a> <em class="jxr_comment"> *</em> |
| <a class="jxr_linenumber" name="12" href="#12">12</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing,</em> |
| <a class="jxr_linenumber" name="13" href="#13">13</a> <em class="jxr_comment"> * software distributed under the License is distributed on an</em> |
| <a class="jxr_linenumber" name="14" href="#14">14</a> <em class="jxr_comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</em> |
| <a class="jxr_linenumber" name="15" href="#15">15</a> <em class="jxr_comment"> * KIND, either express or implied. See the License for the</em> |
| <a class="jxr_linenumber" name="16" href="#16">16</a> <em class="jxr_comment"> * specific language governing permissions and limitations</em> |
| <a class="jxr_linenumber" name="17" href="#17">17</a> <em class="jxr_comment"> * under the License.</em> |
| <a class="jxr_linenumber" name="18" href="#18">18</a> <em class="jxr_comment"> */</em> |
| <a class="jxr_linenumber" name="19" href="#19">19</a> <strong class="jxr_keyword">package</strong> org.apache.chemistry.opencmis.server.support.query; |
| <a class="jxr_linenumber" name="20" href="#20">20</a> |
| <a class="jxr_linenumber" name="21" href="#21">21</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../../org/apache/chemistry/opencmis/server/support/query/StringUtil.html">StringUtil</a> { |
| <a class="jxr_linenumber" name="22" href="#22">22</a> |
| <a class="jxr_linenumber" name="23" href="#23">23</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../../../org/apache/chemistry/opencmis/server/support/query/StringUtil.html">StringUtil</a>() { |
| <a class="jxr_linenumber" name="24" href="#24">24</a> } |
| <a class="jxr_linenumber" name="25" href="#25">25</a> |
| <a class="jxr_linenumber" name="26" href="#26">26</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="27" href="#27">27</a> <em class="jxr_javadoccomment"> * Removes all escape sequences in a string and return unescaped string</em> |
| <a class="jxr_linenumber" name="28" href="#28">28</a> <em class="jxr_javadoccomment"> * escape character is backslash \, so \\ --> \, \' --> ' additional escaped</em> |
| <a class="jxr_linenumber" name="29" href="#29">29</a> <em class="jxr_javadoccomment"> * characters can be allowed in escapedChars.</em> |
| <a class="jxr_linenumber" name="30" href="#30">30</a> <em class="jxr_javadoccomment"> * </em> |
| <a class="jxr_linenumber" name="31" href="#31">31</a> <em class="jxr_javadoccomment"> * @param literal</em> |
| <a class="jxr_linenumber" name="32" href="#32">32</a> <em class="jxr_javadoccomment"> * String to unescape</em> |
| <a class="jxr_linenumber" name="33" href="#33">33</a> <em class="jxr_javadoccomment"> * @param escapedChars</em> |
| <a class="jxr_linenumber" name="34" href="#34">34</a> <em class="jxr_javadoccomment"> * set of allowed characters to be escaped with a backslash, if</em> |
| <a class="jxr_linenumber" name="35" href="#35">35</a> <em class="jxr_javadoccomment"> * set to null then ' (quote) and \ (backslash) are allowed to be</em> |
| <a class="jxr_linenumber" name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * escaped</em> |
| <a class="jxr_linenumber" name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * @return unescaped literal or null if the literal is illegal</em> |
| <a class="jxr_linenumber" name="38" href="#38">38</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="39" href="#39">39</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String unescape(String literal, String escapedChars) { |
| <a class="jxr_linenumber" name="40" href="#40">40</a> <strong class="jxr_keyword">char</strong> c = '?'; |
| <a class="jxr_linenumber" name="41" href="#41">41</a> <strong class="jxr_keyword">int</strong> i = 0; |
| <a class="jxr_linenumber" name="42" href="#42">42</a> StringBuilder sb = <strong class="jxr_keyword">new</strong> StringBuilder(); |
| <a class="jxr_linenumber" name="43" href="#43">43</a> |
| <a class="jxr_linenumber" name="44" href="#44">44</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">null</strong> == escapedChars) { |
| <a class="jxr_linenumber" name="45" href="#45">45</a> escapedChars = <span class="jxr_string">"\\'"</span>; |
| <a class="jxr_linenumber" name="46" href="#46">46</a> } |
| <a class="jxr_linenumber" name="47" href="#47">47</a> |
| <a class="jxr_linenumber" name="48" href="#48">48</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">null</strong> == literal) { |
| <a class="jxr_linenumber" name="49" href="#49">49</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>; |
| <a class="jxr_linenumber" name="50" href="#50">50</a> } |
| <a class="jxr_linenumber" name="51" href="#51">51</a> |
| <a class="jxr_linenumber" name="52" href="#52">52</a> <strong class="jxr_keyword">int</strong> len = literal.length(); |
| <a class="jxr_linenumber" name="53" href="#53">53</a> |
| <a class="jxr_linenumber" name="54" href="#54">54</a> <strong class="jxr_keyword">if</strong> (len == 1 && literal.charAt(0) == '\\') { |
| <a class="jxr_linenumber" name="55" href="#55">55</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>; |
| <a class="jxr_linenumber" name="56" href="#56">56</a> } |
| <a class="jxr_linenumber" name="57" href="#57">57</a> |
| <a class="jxr_linenumber" name="58" href="#58">58</a> <strong class="jxr_keyword">if</strong> (len > 1 && literal.charAt(len - 2) != '\\' && literal.charAt(len - 1) == '\\') { |
| <a class="jxr_linenumber" name="59" href="#59">59</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>; |
| <a class="jxr_linenumber" name="60" href="#60">60</a> } |
| <a class="jxr_linenumber" name="61" href="#61">61</a> |
| <a class="jxr_linenumber" name="62" href="#62">62</a> <strong class="jxr_keyword">for</strong> (i = 0; i < len; i++) { |
| <a class="jxr_linenumber" name="63" href="#63">63</a> c = literal.charAt(i); |
| <a class="jxr_linenumber" name="64" href="#64">64</a> <strong class="jxr_keyword">if</strong> (c == '\\') { |
| <a class="jxr_linenumber" name="65" href="#65">65</a> <strong class="jxr_keyword">char</strong> escChar = literal.charAt(i + 1); |
| <a class="jxr_linenumber" name="66" href="#66">66</a> <strong class="jxr_keyword">boolean</strong> matched = false; |
| <a class="jxr_linenumber" name="67" href="#67">67</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> j = 0; j < escapedChars.length(); j++) { |
| <a class="jxr_linenumber" name="68" href="#68">68</a> <strong class="jxr_keyword">if</strong> (escChar == escapedChars.charAt(j)) { |
| <a class="jxr_linenumber" name="69" href="#69">69</a> sb.append(escChar); |
| <a class="jxr_linenumber" name="70" href="#70">70</a> ++i; |
| <a class="jxr_linenumber" name="71" href="#71">71</a> matched = <strong class="jxr_keyword">true</strong>; |
| <a class="jxr_linenumber" name="72" href="#72">72</a> <strong class="jxr_keyword">break</strong>; |
| <a class="jxr_linenumber" name="73" href="#73">73</a> } |
| <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">if</strong> (!matched) { |
| <a class="jxr_linenumber" name="77" href="#77">77</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>; |
| <a class="jxr_linenumber" name="78" href="#78">78</a> } |
| <a class="jxr_linenumber" name="79" href="#79">79</a> |
| <a class="jxr_linenumber" name="80" href="#80">80</a> } <strong class="jxr_keyword">else</strong> { |
| <a class="jxr_linenumber" name="81" href="#81">81</a> sb.append(literal.charAt(i)); |
| <a class="jxr_linenumber" name="82" href="#82">82</a> } |
| <a class="jxr_linenumber" name="83" href="#83">83</a> } |
| <a class="jxr_linenumber" name="84" href="#84">84</a> |
| <a class="jxr_linenumber" name="85" href="#85">85</a> <strong class="jxr_keyword">return</strong> sb.toString(); |
| <a class="jxr_linenumber" name="86" href="#86">86</a> } |
| <a class="jxr_linenumber" name="87" href="#87">87</a> |
| <a class="jxr_linenumber" name="88" href="#88">88</a> } |
| </pre> |
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