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<div id="projectname">QuaZIP <span id="projectnumber">quazip-0-7-3</span></div>
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<div class="title"><a class="el" href="classQuaZip.html" title="ZIP archive.">QuaZip</a> FAQ </div> </div>
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<div class="textblock"><p><a class="anchor" id="faq-non-QIODevice"></a> Q. Is there any way to use <a class="el" href="classQuaZipFile.html" title="A file inside ZIP archive.">QuaZipFile</a> in Qt where you are supposed to use normal (non-zipped) file, but not through QIODevice API?</p>
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<p>A. Usually not. For example, if you are passing file name to some database driver (like SQLite), Qt usually just passes this name down to the 3rd-party library, which is usually does not know anything about QIODevice and therefore there is no way to pass <a class="el" href="classQuaZipFile.html" title="A file inside ZIP archive.">QuaZipFile</a> as normal file. However, if we are talking about some place where you pass file name, and then indirectly use QFile to open it, then it is a good idea to make overloaded method, which accepts a QIODevice pointer. Then you would be able to pass <a class="el" href="classQuaZipFile.html" title="A file inside ZIP archive.">QuaZipFile</a> as well as many other nice things such as QBuffer or QProcess.</p>
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<p><a class="anchor" id="faq-zip64"></a> Q. Can QuaZIP handle files larger than 4GB? What about zip64 standard?</p>
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<p>A. Starting with version 0.6, QuaZIP uses Minizip 1.1 with zip64 support which should handle large files perfectly. The zip64 support in Minizip looks like it's not 100% conforming to the standard, but 3rd party tools seem to have no problem with the resulting archives.</p>
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<p><a class="anchor" id="faq-seekable"></a> Q. Can QuaZIP write archives to a sequential QIODevice like QTcpSocket?</p>
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<p>A. Not yet. It is not supported by vanilla Minizip (the back-end QuaZIP uses), although theoretically possible according to the ZIP standard. It would require some Minizip modifications that would allow it to detect non-seekable I/O and produce necessary output structures. QuaZIP already writes data descriptor which is necessary for non-seekable I/O. The only thing that is apparently left is to make Minizip fill local headers with correct values and forget about seeking after closing the file. </p>
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