mirrorwriterprocessor.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="131" href="#131">131</a>     <em>/**<em>*</em></em>
<a name="132" href="#132">132</a> <em>     * Key to use asking settings for maximum file system path length.</em>
<a name="133" href="#133">133</a> <em>     */</em>
<a name="134" href="#134">134</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String ATTR_MAX_PATH_LEN = <span class="string">"max-path-length"</span>;
<a name="135" href="#135">135</a> 
<a name="136" href="#136">136</a>     <em>/**<em>*</em></em>
<a name="137" href="#137">137</a> <em>     * Key to use asking settings for maximum file system path segment length.</em>
<a name="138" href="#138">138</a> <em>     */</em>
<a name="139" href="#139">139</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String ATTR_MAX_SEG_LEN = <span class="string">"max-segment-length"</span>;
<a name="140" href="#140">140</a> 
<a name="141" href="#141">141</a>     <em>/**<em>*</em></em>
<a name="142" href="#142">142</a> <em>     * Key to use asking settings for base directory path value.</em>
<a name="143" href="#143">143</a> <em>     */</em>
<a name="144" href="#144">144</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String ATTR_PATH = <span class="string">"path"</span>;
<a name="145" href="#145">145</a> 
<a name="146" href="#146">146</a>     <em>/**<em>*</em></em>
<a name="147" href="#147">147</a> <em>     * Key to use asking settings for port directory option.</em>
<a name="148" href="#148">148</a> <em>     */</em>
<a name="149" href="#149">149</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String ATTR_PORT_DIRECTORY = <span class="string">"port-directory"</span>;
<a name="150" href="#150">150</a> 
<a name="151" href="#151">151</a>     <em>/**<em>*</em></em>
<a name="152" href="#152">152</a> <em>     * Key to use asking settings for suffix at end option.</em>
<a name="153" href="#153">153</a> <em>     */</em>
<a name="154" href="#154">154</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String ATTR_SUFFIX_AT_END = <span class="string">"suffix-at-end"</span>;
<a name="155" href="#155">155</a> 
<a name="156" href="#156">156</a>     <em>/**<em>*</em></em>
<a name="157" href="#157">157</a> <em>     * Key to use asking settings for too-long directory.</em>
<a name="158" href="#158">158</a> <em>     */</em>
<a name="159" href="#159">159</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String ATTR_TOO_LONG_DIRECTORY = <span class="string">"too-long-directory"</span>;
<a name="160" href="#160">160</a> 
<a name="161" href="#161">161</a>     <em>/**<em>*</em></em>
<a name="162" href="#162">162</a> <em>     * Key to use asking settings for underscore set.</em>
<a name="163" href="#163">163</a> <em>     */</em>
<a name="164" href="#164">164</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String ATTR_UNDERSCORE_SET = <span class="string">"underscore-set"</span>;
<a name="165" href="#165">165</a> 
<a name="166" href="#166">166</a>     <em>/**<em>* Default value for ATTR_DOT_BEGIN.*/</em></em>
<a name="167" href="#167">167</a>     <strong>private</strong> <strong>static</strong> <strong>final</strong> String DEFAULT_DOT_BEGIN = <span class="string">"%2E"</span>;
<a name="168" href="#168">168</a> 
<a name="169" href="#169">169</a>     <em>/**<em>* Default maximum file system path length.*/</em></em>
<a name="170" href="#170">170</a>     <strong>private</strong> <strong>static</strong> <strong>final</strong> <strong>int</strong> DEFAULT_MAX_PATH_LEN = 1023;
<a name="171" href="#171">171</a> 
<a name="172" href="#172">172</a>     <em>/**<em>* Default maximum file system path segment length.*/</em></em>
<a name="173" href="#173">173</a>     <strong>private</strong> <strong>static</strong> <strong>final</strong> <strong>int</strong> DEFAULT_MAX_SEG_LEN = 255;
<a name="174" href="#174">174</a> 
<a name="175" href="#175">175</a>     <em>/**<em>* Default value for ATTR_TOO_LONG_DIRECTORY.*/</em></em>
<a name="176" href="#176">176</a>     <strong>private</strong> <strong>static</strong> <strong>final</strong> String DEFAULT_TOO_LONG_DIRECTORY = <span class="string">"LONG"</span>;
<a name="177" href="#177">177</a> 
<a name="178" href="#178">178</a>     <em>/**<em>* An empty Map.*/</em></em>
<a name="179" href="#179">179</a>     <strong>private</strong> <strong>static</strong> <strong>final</strong> Map EMPTY_MAP = <strong>new</strong> TreeMap();
<a name="180" href="#180">180</a> 
<a name="181" href="#181">181</a>     <em>/**<em>*</em></em>
<a name="182" href="#182">182</a> <em>       Regular expression matching a file system path segment.</em>
<a name="183" href="#183">183</a> <em>       The intent is one or more non-file-separator characters.</em>
<a name="184" href="#184">184</a> <em>       The backslash is to quote File.separator if it's also backslash.</em>
<a name="185" href="#185">185</a> <em>    */</em>
<a name="186" href="#186">186</a>     <strong>private</strong> <strong>static</strong> <strong>final</strong> String PATH_SEGMENT_RE =
<a name="187" href="#187">187</a>         <span class="string">"[^&#47;&#47;"</span> + File.separator + <span class="string">"]+"</span>;
<a name="188" href="#188">188</a> 
<a name="189" href="#189">189</a>     <em>/**<em>*</em></em>
<a name="190" href="#190">190</a> <em>       Regular expression constraint on ATTR_DIRECTORY_FILE.</em>
<a name="191" href="#191">191</a> <em>       The intent is one non-file-separator character,</em>
<a name="192" href="#192">192</a> <em>       followed by zero or more characters.</em>
<a name="193" href="#193">193</a> <em>       The backslash is to quote File.separator if it's also backslash.</em>
<a name="194" href="#194">194</a> <em>    */</em>
<a name="195" href="#195">195</a>     <strong>private</strong> <strong>static</strong> <strong>final</strong> String TOO_LONG_DIRECTORY_RE =
<a name="196" href="#196">196</a>         <span class="string">"[^&#47;&#47;"</span> + File.separator + <span class="string">"].*"</span>;
<a name="197" href="#197">197</a> 
<a name="198" href="#198">198</a>     <em>/**<em>*</em></em>
<a name="199" href="#199">199</a> <em>     * Logger.</em>
<a name="200" href="#200">200</a> <em>     */</em>
<a name="201" href="#201">201</a>     <strong>private</strong> <strong>static</strong> <strong>final</strong> Logger logger =
<a name="202" href="#202">202</a>         Logger.getLogger(MirrorWriterProcessor.<strong>class</strong>.getName());
<a name="203" href="#203">203</a> 
<a name="204" href="#204">204</a>     <em>/**<em>*</em></em>
<a name="205" href="#205">205</a> <em>     * @param name Name of this processor.</em>
<a name="206" href="#206">206</a> <em>     */</em>
<a name="207" href="#207">207</a>     <strong>public</strong> <a href="../../../../org/archive/crawler/writer/MirrorWriterProcessor.html">MirrorWriterProcessor</a>(String name) {
<a name="208" href="#208">208</a>         <strong>super</strong>(name, <span class="string">"MirrorWriter processor. "</span> +
<a name="209" href="#209">209</a>             <span class="string">"A writer that writes each URL to a file on disk named for "</span> +
<a name="210" href="#210">210</a>             <span class="string">"a derivative of the URL."</span>);
<a name="211" href="#211">211</a>         <a href="../../../../org/archive/crawler/settings/Type.html">Type</a> e; <em class="comment">// Current element.</em>
<a name="212" href="#212">212</a>         addElementToDefinition(<strong>new</strong> <a href="../../../../org/archive/crawler/settings/SimpleType.html">SimpleType</a>(ATTR_CASE_SENSITIVE,
<a name="213" href="#213">213</a>             <span class="string">"True if the file system is case-sensitive, like UNIX. "</span>
<a name="214" href="#214">214</a>             + <span class="string">"False if the file system is case-insensitive, "</span>
<a name="215" href="#215">215</a>             + <span class="string">"like Macintosh HFS+ and Windows."</span>,
<a name="216" href="#216">216</a>             Boolean.TRUE));
<a name="217" href="#217">217</a>         addElementToDefinition(<strong>new</strong> <a href="../../../../org/archive/crawler/settings/StringList.html">StringList</a>(ATTR_CHAR_MAP,
<a name="218" href="#218">218</a>             <span class="string">"This list is grouped in pairs. "</span>
<a name="219" href="#219">219</a>             + <span class="string">"The first string in each pair must have a length of one. "</span>
<a name="220" href="#220">220</a>             + <span class="string">"If it occurs in a URI path, "</span>
<a name="221" href="#221">221</a>             + <span class="string">"it is replaced by the second string in the pair. "</span>
<a name="222" href="#222">222</a>             + <span class="string">"For UNIX, no character mapping is normally needed. "</span>
<a name="223" href="#223">223</a>             + <span class="string">"For Macintosh, the recommended value is [: %%3A]. "</span>
<a name="224" href="#224">224</a>             + <span class="string">"For Windows, the recommended value is "</span>
<a name="225" href="#225">225</a>             + <span class="string">"[' ' %%20  &amp;quot; %%22  * %%2A  : %%3A  &lt; %%3C "</span>
<a name="226" href="#226">226</a>             + <span class="string">"&#47;&#47;> %%3E ? %%3F  &#47;&#47;&#47;&#47; %%5C  ^ %%5E  | %%7C]."</span>));
<a name="227" href="#227">227</a>         addElementToDefinition(<strong>new</strong> <a href="../../../../org/archive/crawler/settings/StringList.html">StringList</a>(ATTR_CONTENT_TYPE_MAP,
<a name="228" href="#228">228</a>             <span class="string">"This list is grouped in pairs. "</span>
<a name="229" href="#229">229</a>             + <span class="string">"If the content type of a resource begins (case-insensitive) "</span>
<a name="230" href="#230">230</a>             + <span class="string">"with the first string in a pair, the suffix is set to "</span>
<a name="231" href="#231">231</a>             + <span class="string">"the second string in the pair, replacing any suffix that may "</span>
<a name="232" href="#232">232</a>             + <span class="string">"have been in the URI.  For example, to force all HTML files "</span>
<a name="233" href="#233">233</a>             + <span class="string">"to have the same suffix, use [text/html html]."</span>));
<a name="234" href="#234">234</a>         e = addElementToDefinition(<strong>new</strong> <a href="../../../../org/archive/crawler/settings/SimpleType.html">SimpleType</a>(ATTR_DIRECTORY_FILE,
<a name="235" href="#235">235</a>             <span class="string">"Implicitly append this to a URI ending with '/'."</span>,
<a name="236" href="#236">236</a>             <span class="string">"index.html"</span>));
<a name="237" href="#237">237</a>         e.addConstraint(<strong>new</strong> <a href="../../../../org/archive/crawler/settings/RegularExpressionConstraint.html">RegularExpressionConstraint</a>(PATH_SEGMENT_RE,
<a name="238" href="#238">238</a>             Level.SEVERE, <span class="string">"This must be a simple file name."</span>));
<a name="239" href="#239">239</a>         e = addElementToDefinition(<strong>new</strong> <a href="../../../../org/archive/crawler/settings/SimpleType.html">SimpleType</a>(ATTR_DOT_BEGIN,
<a name="240" href="#240">240</a>             <span class="string">"If a segment starts with '.', the '.' is replaced by this."</span>,
<a name="241" href="#241">241</a>             DEFAULT_DOT_BEGIN));
<a name="242" href="#242">242</a>         e.addConstraint(<strong>new</strong> <a href="../../../../org/archive/crawler/settings/RegularExpressionConstraint.html">RegularExpressionConstraint</a>(PATH_SEGMENT_RE,
<a name="243" href="#243">243</a>             Level.SEVERE,
<a name="244" href="#244">244</a>             <span class="string">"This must not be empty, and must not contain "</span> + File.separator));
<a name="245" href="#245">245</a>         addElementToDefinition(<strong>new</strong> <a href="../../../../org/archive/crawler/settings/SimpleType.html">SimpleType</a>(ATTR_DOT_END,
<a name="246" href="#246">246</a>             <span class="string">"If a directory name ends with '.' it is replaced by this.  "</span>
<a name="247" href="#247">247</a>             + <span class="string">"For all file systems except Windows, '.' is recommended.  "</span>
<a name="248" href="#248">248</a>             + <span class="string">"For Windows, %%2E is recommended."</span>,
<a name="249" href="#249">249</a>             <span class="string">"."</span>));
<a name="250" href="#250">250</a>         addElementToDefinition(<strong>new</strong> <a href="../../../../org/archive/crawler/settings/StringList.html">StringList</a>(ATTR_HOST_MAP,
<a name="251" href="#251">251</a>             <span class="string">"This list is grouped in pairs. "</span>
<a name="252" href="#252">252</a>             + <span class="string">"If a host name matches (case-insensitive) the first string "</span>
<a name="253" href="#253">253</a>             + <span class="string">"in a pair, it is replaced by the second string in the pair.  "</span>
<a name="254" href="#254">254</a>             + <span class="string">"This can be used for consistency when several names are used "</span>
<a name="255" href="#255">255</a>             + <span class="string">"for one host, for example "</span>
<a name="256" href="#256">256</a>             + <span class="string">"[12.34.56.78 www42.foo.com]."</span>));
<a name="257" href="#257">257</a>         addElementToDefinition(<strong>new</strong> <a href="../../../../org/archive/crawler/settings/SimpleType.html">SimpleType</a>(ATTR_HOST_DIRECTORY,
<a name="258" href="#258">258</a>             <span class="string">"Create a subdirectory named for the host in the URI."</span>,
<a name="259" href="#259">259</a>             Boolean.TRUE));
<a name="260" href="#260">260</a>         addElementToDefinition(<strong>new</strong> <a href="../../../../org/archive/crawler/settings/SimpleType.html">SimpleType</a>(ATTR_PATH,
<a name="261" href="#261">261</a>             <span class="string">"Top-level directory for mirror files."</span>, <span class="string">"mirror"</span>));
<a name="262" href="#262">262</a> 
<a name="263" href="#263">263</a>         <em class="comment">// TODO: Add a new Constraint subclass so ATTR_MAX_PATH_LEN and</em>
<a name="264" href="#264">264</a>         <em class="comment">// ATTR_MAX_SEG_LEN can be constained to reasonable values.</em>
<a name="265" href="#265">265</a>         addElementToDefinition(<strong>new</strong> <a href="../../../../org/archive/crawler/settings/SimpleType.html">SimpleType</a>(ATTR_MAX_PATH_LEN,
<a name="266" href="#266">266</a>             <span class="string">"Maximum file system path length."</span>,
<a name="267" href="#267">267</a>             <strong>new</strong> Integer(DEFAULT_MAX_PATH_LEN)));
<a name="268" href="#268">268</a>         addElementToDefinition(<strong>new</strong> <a href="../../../../org/archive/crawler/settings/SimpleType.html">SimpleType</a>(ATTR_MAX_SEG_LEN,
<a name="269" href="#269">269</a>             <span class="string">"Maximum file system path segment length."</span>,