archivereaderfactory.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="238" href="#238">238</a>         }
<a name="239" href="#239">239</a>         
<a name="240" href="#240">240</a>         <a href="../../../org/archive/io/ArchiveReader.html">ArchiveReader</a> reader = <strong>null</strong>;
<a name="241" href="#241">241</a>         <strong>try</strong> {
<a name="242" href="#242">242</a>             reader = get(localFile, 0);
<a name="243" href="#243">243</a>         } <strong>catch</strong> (IOException e) {
<a name="244" href="#244">244</a>             localFile.delete();
<a name="245" href="#245">245</a>             <strong>throw</strong> e;
<a name="246" href="#246">246</a>         }
<a name="247" href="#247">247</a>         
<a name="248" href="#248">248</a>         <em class="comment">// Assign to final variables so can assign in inner class.</em>
<a name="249" href="#249">249</a>         <strong>final</strong> <a href="../../../org/archive/io/ArchiveReader.html">ArchiveReader</a> r = reader;
<a name="250" href="#250">250</a>         <strong>final</strong> File f = localFile;
<a name="251" href="#251">251</a>         
<a name="252" href="#252">252</a>         <em class="comment">// Return a delegate that does cleanup of downloaded file on close.</em>
<a name="253" href="#253">253</a>         <strong>return</strong> <strong>new</strong> <a href="../../../org/archive/io/ArchiveReader.html">ArchiveReader</a>() {
<a name="254" href="#254">254</a>             <strong>private</strong> <strong>final</strong> <a href="../../../org/archive/io/ArchiveReader.html">ArchiveReader</a> delegate = r;
<a name="255" href="#255">255</a>             <strong>private</strong> File archiveFile = f;
<a name="256" href="#256">256</a>             
<a name="257" href="#257">257</a>             <strong>public</strong> <strong>void</strong> close() throws IOException {
<a name="258" href="#258">258</a>                 <strong>this</strong>.delegate.close();
<a name="259" href="#259">259</a>                 <strong>if</strong> (<strong>this</strong>.archiveFile != <strong>null</strong>) {
<a name="260" href="#260">260</a>                     <strong>if</strong> (archiveFile.exists()) {
<a name="261" href="#261">261</a>                     	archiveFile.delete();
<a name="262" href="#262">262</a>                     }
<a name="263" href="#263">263</a>                     <strong>this</strong>.archiveFile = <strong>null</strong>;
<a name="264" href="#264">264</a>                 }
<a name="265" href="#265">265</a>             }
<a name="266" href="#266">266</a>             
<a name="267" href="#267">267</a>             <strong>public</strong> <a href="../../../org/archive/io/ArchiveRecord.html">ArchiveRecord</a> get(<strong>long</strong> o) throws IOException {
<a name="268" href="#268">268</a>                 <strong>return</strong> <strong>this</strong>.delegate.get(o);
<a name="269" href="#269">269</a>             }
<a name="270" href="#270">270</a>             
<a name="271" href="#271">271</a>             <strong>public</strong> <strong>boolean</strong> isDigest() {
<a name="272" href="#272">272</a>                 <strong>return</strong> <strong>this</strong>.delegate.isDigest();
<a name="273" href="#273">273</a>             }
<a name="274" href="#274">274</a>             
<a name="275" href="#275">275</a>             <strong>public</strong> <strong>boolean</strong> isStrict() {
<a name="276" href="#276">276</a>                 <strong>return</strong> <strong>this</strong>.delegate.isStrict();
<a name="277" href="#277">277</a>             }
<a name="278" href="#278">278</a>             
<a name="279" href="#279">279</a>             <strong>public</strong> Iterator iterator() {
<a name="280" href="#280">280</a>                 <strong>return</strong> <strong>this</strong>.delegate.iterator();
<a name="281" href="#281">281</a>             }
<a name="282" href="#282">282</a>             
<a name="283" href="#283">283</a>             <strong>public</strong> <strong>void</strong> setDigest(<strong>boolean</strong> d) {
<a name="284" href="#284">284</a>                 <strong>this</strong>.delegate.setDigest(d);
<a name="285" href="#285">285</a>             }
<a name="286" href="#286">286</a>             
<a name="287" href="#287">287</a>             <strong>public</strong> <strong>void</strong> setStrict(<strong>boolean</strong> s) {
<a name="288" href="#288">288</a>                 <strong>this</strong>.delegate.setStrict(s);
<a name="289" href="#289">289</a>             }
<a name="290" href="#290">290</a>             
<a name="291" href="#291">291</a>             <strong>public</strong> List validate() throws IOException {
<a name="292" href="#292">292</a>                 <strong>return</strong> <strong>this</strong>.delegate.validate();
<a name="293" href="#293">293</a>             }
<a name="294" href="#294">294</a> 
<a name="295" href="#295">295</a> 			@Override
<a name="296" href="#296">296</a> 			<strong>public</strong> <a href="../../../org/archive/io/ArchiveRecord.html">ArchiveRecord</a> get() throws IOException {
<a name="297" href="#297">297</a> 				<strong>return</strong> <strong>this</strong>.delegate.get();
<a name="298" href="#298">298</a> 			}
<a name="299" href="#299">299</a> 
<a name="300" href="#300">300</a> 			@Override
<a name="301" href="#301">301</a> 			<strong>public</strong> String getVersion() {
<a name="302" href="#302">302</a> 				<strong>return</strong> <strong>this</strong>.delegate.getVersion();
<a name="303" href="#303">303</a> 			}
<a name="304" href="#304">304</a> 
<a name="305" href="#305">305</a> 			@Override
<a name="306" href="#306">306</a> 			<strong>public</strong> List validate(<strong>int</strong> noRecords) throws IOException {
<a name="307" href="#307">307</a> 				<strong>return</strong> <strong>this</strong>.delegate.validate(noRecords);
<a name="308" href="#308">308</a> 			}
<a name="309" href="#309">309</a> 
<a name="310" href="#310">310</a> 			@Override
<a name="311" href="#311">311</a> 			<strong>protected</strong> <a href="../../../org/archive/io/ArchiveRecord.html">ArchiveRecord</a> createArchiveRecord(InputStream is,
<a name="312" href="#312">312</a> 					<strong>long</strong> offset)
<a name="313" href="#313">313</a> 			throws IOException {
<a name="314" href="#314">314</a> 				<strong>return</strong> <strong>this</strong>.delegate.createArchiveRecord(is, offset);
<a name="315" href="#315">315</a> 			}
<a name="316" href="#316">316</a> 
<a name="317" href="#317">317</a> 			@Override
<a name="318" href="#318">318</a> 			<strong>protected</strong> <strong>void</strong> gotoEOR(<a href="../../../org/archive/io/ArchiveRecord.html">ArchiveRecord</a> record) throws IOException {
<a name="319" href="#319">319</a> 				<strong>this</strong>.delegate.gotoEOR(record);
<a name="320" href="#320">320</a> 			}
<a name="321" href="#321">321</a> 
<a name="322" href="#322">322</a> 			@Override
<a name="323" href="#323">323</a> 			<strong>public</strong> <strong>void</strong> dump(<strong>boolean</strong> compress)
<a name="324" href="#324">324</a> 			throws IOException, ParseException {
<a name="325" href="#325">325</a> 				<strong>this</strong>.delegate.dump(compress);
<a name="326" href="#326">326</a> 			}
<a name="327" href="#327">327</a> 
<a name="328" href="#328">328</a> 			@Override
<a name="329" href="#329">329</a> 			<strong>public</strong> String getDotFileExtension() {
<a name="330" href="#330">330</a> 				<strong>return</strong> <strong>this</strong>.delegate.getDotFileExtension();
<a name="331" href="#331">331</a> 			}
<a name="332" href="#332">332</a> 
<a name="333" href="#333">333</a> 			@Override
<a name="334" href="#334">334</a> 			<strong>public</strong> String getFileExtension() {
<a name="335" href="#335">335</a> 				<strong>return</strong> <strong>this</strong>.delegate.getFileExtension();
<a name="336" href="#336">336</a> 			}
<a name="337" href="#337">337</a>         };
<a name="338" href="#338">338</a>     }
<a name="339" href="#339">339</a>     
<a name="340" href="#340">340</a>     <strong>protected</strong> <strong>void</strong> addUserAgent(<strong>final</strong> HttpURLConnection connection) {
<a name="341" href="#341">341</a>         connection.addRequestProperty(<span class="string">"User-Agent"</span>, <strong>this</strong>.getClass().getName());
<a name="342" href="#342">342</a>     }
<a name="343" href="#343">343</a>     
<a name="344" href="#344">344</a>     <em>/**<em>*</em></em>
<a name="345" href="#345">345</a> <em>     * @param f File to test.</em>
<a name="346" href="#346">346</a> <em>     * @return True if &lt;code>f&lt;/code> is compressed.</em>
<a name="347" href="#347">347</a> <em>     * @throws IOException</em>
<a name="348" href="#348">348</a> <em>     */</em>
<a name="349" href="#349">349</a>     <strong>protected</strong> <strong>boolean</strong> isCompressed(<strong>final</strong> File f) throws IOException {
<a name="350" href="#350">350</a>         <strong>return</strong> f.getName().toLowerCase().
<a name="351" href="#351">351</a>         	endsWith(DOT_COMPRESSED_FILE_EXTENSION);
<a name="352" href="#352">352</a>     }
<a name="353" href="#353">353</a> }
</pre>
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