pathscope.html

用JAVA编写的,在做实验的时候留下来的,本来想删的,但是传上来,大家分享吧

<a name="81" href="#81">81</a>      <strong>public</strong> <a href="../../../../org/archive/crawler/scope/PathScope.html">PathScope</a>(String name) {
<a name="82" href="#82">82</a>          <strong>super</strong>(name);
<a name="83" href="#83">83</a>          setDescription(
<a name="84" href="#84">84</a>              <span class="string">"PathScope: A scope for path crawls *Deprecated* Use "</span> +
<a name="85" href="#85">85</a>              <span class="string">"DecidingScope instead. Crawls made with this scope"</span> +
<a name="86" href="#86">86</a>              <span class="string">" will be limited to a specific portion of the hosts its seeds"</span> +
<a name="87" href="#87">87</a>              <span class="string">" provide. More specifically the paths those seeds provide."</span> +
<a name="88" href="#88">88</a>              <span class="string">" For example if one of the seeds is 'archive.org/example/'"</span> + 
<a name="89" href="#89">89</a>              <span class="string">" all URIs under the path 'examples' will be crawled (like"</span> +
<a name="90" href="#90">90</a>              <span class="string">" 'archive.org/examples/hello.html') but not URIs in other"</span> +
<a name="91" href="#91">91</a>              <span class="string">" paths or root (i.e. 'archive.org/index.html)."</span>);
<a name="92" href="#92">92</a>          <strong>this</strong>.additionalFocusFilter = (Filter) addElementToDefinition(
<a name="93" href="#93">93</a>                  <strong>new</strong> <a href="../../../../org/archive/crawler/filter/FilePatternFilter.html">FilePatternFilter</a>(ATTR_ADDITIONAL_FOCUS_FILTER));
<a name="94" href="#94">94</a>          <strong>this</strong>.transitiveFilter = (Filter) addElementToDefinition(
<a name="95" href="#95">95</a>                  <strong>new</strong> <a href="../../../../org/archive/crawler/filter/TransclusionFilter.html">TransclusionFilter</a>(ATTR_TRANSITIVE_FILTER));
<a name="96" href="#96">96</a>      }
<a name="97" href="#97">97</a>  
<a name="98" href="#98">98</a>      <em>/**<em>*</em></em>
<a name="99" href="#99">99</a>  <em>     * @param o</em>
<a name="100" href="#100">100</a> <em>     * @return True if transitive filter accepts passed object.</em>
<a name="101" href="#101">101</a> <em>     */</em>
<a name="102" href="#102">102</a>     <strong>protected</strong> <strong>boolean</strong> transitiveAccepts(Object o) {
<a name="103" href="#103">103</a>         <strong>if</strong> (<strong>this</strong>.transitiveFilter == <strong>null</strong>) {
<a name="104" href="#104">104</a>             <strong>return</strong> <strong>true</strong>;
<a name="105" href="#105">105</a>         }
<a name="106" href="#106">106</a>         <strong>return</strong> <strong>this</strong>.transitiveFilter.accepts(o);
<a name="107" href="#107">107</a>     }
<a name="108" href="#108">108</a> 
<a name="109" href="#109">109</a>     <em>/**<em>*</em></em>
<a name="110" href="#110">110</a> <em>     * @param o</em>
<a name="111" href="#111">111</a> <em>     * @return True if focus filter accepts passed object.</em>
<a name="112" href="#112">112</a> <em>     */</em>
<a name="113" href="#113">113</a>     <strong>protected</strong> <strong>boolean</strong> focusAccepts(Object o) {
<a name="114" href="#114">114</a>         <a href="../../../../org/archive/net/UURI.html">UURI</a> u = UURI.from(o);
<a name="115" href="#115">115</a>         <strong>if</strong> (u == <strong>null</strong>) {
<a name="116" href="#116">116</a>             <strong>return</strong> false;
<a name="117" href="#117">117</a>         }
<a name="118" href="#118">118</a>         <em class="comment">// Get the seeds to refresh </em>
<a name="119" href="#119">119</a>         Iterator iter = seedsIterator();
<a name="120" href="#120">120</a>         <strong>while</strong>(iter.hasNext()) {
<a name="121" href="#121">121</a>             <a href="../../../../org/archive/net/UURI.html">UURI</a> s = (UURI) iter.next();
<a name="122" href="#122">122</a>             <strong>if</strong> (isSameHost(s, u)) {
<a name="123" href="#123">123</a>                 <strong>try</strong> {
<a name="124" href="#124">124</a>                     <em class="comment">// Protect against non-parseable URIs. See</em>
<a name="125" href="#125">125</a>                     <em class="comment">// "[ 910120 ] java.net.URI#getHost fails when</em>
<a name="126" href="#126">126</a>                     <em class="comment">// leading digit"</em>
<a name="127" href="#127">127</a>                     <strong>if</strong> (s.getPath() == <strong>null</strong> || u.getPath() == <strong>null</strong>) {
<a name="128" href="#128">128</a>                         <strong>continue</strong>;
<a name="129" href="#129">129</a>                     }
<a name="130" href="#130">130</a>                 }
<a name="131" href="#131">131</a>                 <strong>catch</strong> (URIException e) {
<a name="132" href="#132">132</a>                     logger.severe(<span class="string">"Failed get path on "</span> + u + <span class="string">" or "</span> + s +
<a name="133" href="#133">133</a>                         <span class="string">": "</span> + e.getMessage());
<a name="134" href="#134">134</a>                 }
<a name="135" href="#135">135</a>                 <strong>try</strong> {
<a name="136" href="#136">136</a>                     <strong>if</strong> (s.getPath().regionMatches(0, u.getPath(), 0,
<a name="137" href="#137">137</a>                         s.getPath().lastIndexOf('/'))) {
<a name="138" href="#138">138</a>                         <em class="comment">// matches up to last '/'</em>
<a name="139" href="#139">139</a>                         checkClose(iter);
<a name="140" href="#140">140</a>                         <strong>return</strong> <strong>true</strong>;
<a name="141" href="#141">141</a>                     } <strong>else</strong> {
<a name="142" href="#142">142</a>                         <em class="comment">// no match; try next seed</em>
<a name="143" href="#143">143</a>                         <strong>continue</strong>;
<a name="144" href="#144">144</a>                     }
<a name="145" href="#145">145</a>                 }
<a name="146" href="#146">146</a>                 <strong>catch</strong> (URIException e) {
<a name="147" href="#147">147</a>                     logger.severe(<span class="string">"Failed get path on "</span> + u + <span class="string">" or "</span> + s +
<a name="148" href="#148">148</a>                         <span class="string">": "</span> + e.getMessage());
<a name="149" href="#149">149</a>                 }
<a name="150" href="#150">150</a>             }
<a name="151" href="#151">151</a>         }
<a name="152" href="#152">152</a>         <em class="comment">// if none found, fail</em>
<a name="153" href="#153">153</a>         checkClose(iter);
<a name="154" href="#154">154</a>         <strong>return</strong> false;
<a name="155" href="#155">155</a>     }
<a name="156" href="#156">156</a> 
<a name="157" href="#157">157</a>     <em class="comment">// Javadoc inherited</em>
<a name="158" href="#158">158</a>     @Override
<a name="159" href="#159">159</a>     <strong>protected</strong> <strong>boolean</strong> additionalFocusAccepts(Object o) {
<a name="160" href="#160">160</a>         <strong>return</strong> <strong>this</strong>.additionalFocusFilter.accepts(o);
<a name="161" href="#161">161</a>     }
<a name="162" href="#162">162</a> 
<a name="163" href="#163">163</a> }
</pre>
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