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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/125974/">https://git.reviewboard.kde.org/r/125974/</a>
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<p style="margin-top: 0;">On November 6th, 2015, 7:52 a.m. UTC, <b>David Faure</b> wrote:</p>
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<a href="https://git.reviewboard.kde.org/r/125974/diff/1/?file=415544#file415544line652" style="color: black; font-weight: bold; text-decoration: underline;">src/karchive.cpp</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void KArchiveFile::setSize(qint64 s)</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">ok</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">archive</span><span class="p">()</span><span class="o">-></span><span class="n">device</span><span class="p">()</span><span class="o">-></span><span class="n">read</span><span class="p">(</span><span class="n">_</span><span class="p">,</span> <span class="n">d</span><span class="o">-></span><span class="n">pos</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 not equivalent to seek(d->pos).
seek(d->pos) goes to the absolute position d->pos, counting from the beginning of the device.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">read(d->pos) goes to the absolute position (current position + d->pos).</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">If this is seeking forward, you could emulate it with a dummy read, but what if this is seeking backward? That's not possible on a sequential device, so my advice is, forget using a sequential device here, download to a temp file.</p></pre>
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<p>On November 6th, 2015, 12:23 p.m. UTC, <b>Romário Rios</b> wrote:</p>
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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;">Actually, this is irrelevant to the issue. I reverted this code back to the original and the fix still works.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">You're right about the situation in this case, but, inside KTar::openArchive, it works because it originally only seeks the device forward.</p></pre>
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<p>On November 7th, 2015, 9:21 a.m. UTC, <b>David Faure</b> wrote:</p>
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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 but if you call KArchiveFile::data() on the last file in the archive, and then on the first file in the archive, seeking back is obviously needed.</p></pre>
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<p>On November 21st, 2015, 7:11 p.m. UTC, <b>Romário Rios</b> wrote:</p>
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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;">When would that happen? KArchiveFile::data() isn't ever called from inside KTar::openArchive().</p></pre>
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<pre style="margin-left: 1em; 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;">Not inside openArchive, but afterwards. The app can call KArchiveFile::data on any file it wants, in any order.</p></pre>
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<p>- David</p>
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<p>On November 6th, 2015, 2:52 a.m. UTC, Romário Rios wrote:</p>
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<div>Review request for KDE Frameworks and Aleix Pol Gonzalez.</div>
<div>By Romário Rios.</div>
<p style="color: grey;"><i>Updated Nov. 6, 2015, 2:52 a.m.</i></p>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
karchive
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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;">Up until now, since at least 5.12, decompressing some data coming directly from a QIODevice by using KCompressionDevice because this is a sequential device, and KTar and KArchive used to use QIODevice::seek and pos and some places, which made the decompression fail. This patch makes KTar sequential-friendly by replacing the calls to seek and pos with read and a simple counter, respectively.</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;">Makes the tests from review #125941 pass</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>src/karchive.cpp <span style="color: grey">(0ece37c)</span></li>
<li>src/ktar.cpp <span style="color: grey">(824395e)</span></li>
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<p><a href="https://git.reviewboard.kde.org/r/125974/diff/" style="margin-left: 3em;">View Diff</a></p>
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