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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/125762/">https://git.reviewboard.kde.org/r/125762/</a>
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<p>Ship it!</p>
<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">another round of low-level code review; but I'd say you can push afterwards, given the lack of objections on the overall mechanism.</p></pre>
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<a href="https://git.reviewboard.kde.org/r/125762/diff/4/?file=412432#file412432line85" style="color: black; font-weight: bold; text-decoration: underline;">src/extractors/externalextractor.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">m_extractors</span><span class="p">(</span><span class="n">QMultiHash</span><span class="o"><</span><span class="n">QString</span><span class="p">,</span> <span class="n">QString</span><span class="o">></span><span class="p">()),</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">m_extractors(), would do the same, no need to copy from a default-constructed instance.</p></pre>
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<a href="https://git.reviewboard.kde.org/r/125762/diff/4/?file=412432#file412432line86" style="color: black; font-weight: bold; text-decoration: underline;">src/extractors/externalextractor.cpp</a>
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(Diff revision 4)
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">m_textCodec</span><span class="p">(</span><span class="n">QTextCodec</span><span class="o">::</span><span class="n">codecForLocale</span><span class="p">())</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">this is used only here in this method, so it doesn't need to be a member variable</p></pre>
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<a href="https://git.reviewboard.kde.org/r/125762/diff/4/?file=412432#file412432line91" style="color: black; font-weight: bold; text-decoration: underline;">src/extractors/externalextractor.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">Q_FOREACH</span><span class="p">(</span><span class="k">auto</span> <span class="n">extractor</span><span class="p">,</span> <span class="n">findExtractors</span><span class="p">())</span> <span class="p">{</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">const QString &extractor</p></pre>
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<a href="https://git.reviewboard.kde.org/r/125762/diff/4/?file=412432#file412432line94" style="color: black; font-weight: bold; text-decoration: underline;">src/extractors/externalextractor.cpp</a>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">process</span><span class="p">.</span><span class="n">waitForFinished</span><span class="p">();</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">maybe with a timeout? + error handling?</p></pre>
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<p>- David Faure</p>
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<p>On October 24th, 2015, 12:19 p.m. UTC, Boudhayan Gupta wrote:</p>
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<div>Review request for Baloo, KDE Frameworks, Pinak Ahuja, and Vishesh Handa.</div>
<div>By Boudhayan Gupta.</div>
<p style="color: grey;"><i>Updated Oct. 24, 2015, 12:19 p.m.</i></p>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
kfilemetadata
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">This patch introduces support for external metadata extractors in KFileMetaData</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">The external extractors themselves can be written in any language, provided that it can be executed as a standalone executable (compiled or script with a hashbang), with command line arguments, and can output data to stdout.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">The extractors are executed like so:</p>
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<li style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: normal;"><code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">extractor --mimetypes</code> - outputs a list of mimetypes supported by the extractor, one per line.</li>
<li style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: normal;"><code style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: 0;line-height: inherit;">extractor filename</code> - outputs a json document with the metadata. The keys are such that they can be directly used with PropertyInfo::fromName().</li>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">At the KFileMetaData end, an additional internal plugin (ExternalExtractor) is provided that forms a conduit between external extractors and the internal API. This plugin looks for executables called kfilemetadata_extractor_<something> in /usr/bin to find external extractors, and executes them with the --mimetypes arg to find the list of mimetypes each extractor supports. ExternalExtractor then claims to support all of these mimetypes, and then delegates to the extractor executable when doing the actual extraction.</p></pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Tested with the sample executable file extractor (as attched, written in python) with the dump manual test in KFileMetaData. Works.</p></pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>README.md <span style="color: grey">(19b1a26)</span></li>
<li>src/extractors/CMakeLists.txt <span style="color: grey">(5dd223e)</span></li>
<li>src/extractors/externalextractor.h <span style="color: grey">(PRE-CREATION)</span></li>
<li>src/extractors/externalextractor.cpp <span style="color: grey">(PRE-CREATION)</span></li>
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<p><a href="https://git.reviewboard.kde.org/r/125762/diff/" style="margin-left: 3em;">View Diff</a></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">File Attachments </h1>
<li><a href="https://git.reviewboard.kde.org/media/uploaded/files/2015/10/23/146b657f-31d9-4117-a82f-ef966a6339d4__kfilemetadata_extractor_executable">kfilemetadata_extractor_executable</a></li>
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