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zip_source_zip.mdoc -- create data source from zip file
Copyright (C) 2004-2017 Dieter Baron and Thomas Klausner
This file is part of libzip, a library to manipulate ZIP archives.
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<title>ZIP_SOURCE_ZIP(3)</title>
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<table class="head">
<tr>
<td class="head-ltitle">ZIP_SOURCE_ZIP(3)</td>
<td class="head-vol">Library Functions Manual</td>
<td class="head-rtitle">ZIP_SOURCE_ZIP(3)</td>
</tr>
</table>
<div class="manual-text">
<h1 class="Sh" title="Sh" id="NAME"><a class="selflink" href="#NAME">NAME</a></h1>
<b class="Nm" title="Nm">zip_source_zip</b> &#x2014;
<span class="Nd" title="Nd">create data source from zip file</span>
<h1 class="Sh" title="Sh" id="LIBRARY"><a class="selflink" href="#LIBRARY">LIBRARY</a></h1>
libzip (-lzip)
<h1 class="Sh" title="Sh" id="SYNOPSIS"><a class="selflink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<b class="In" title="In">#include &lt;<a class="In" title="In">zip.h</a>&gt;</b>
<div class="Pp"></div>
<var class="Ft" title="Ft">zip_source_t *</var>
<br/>
<b class="Fn" title="Fn">zip_source_zip</b>(<var class="Fa" title="Fa" style="white-space: nowrap;">zip_t
*archive</var>, <var class="Fa" title="Fa" style="white-space: nowrap;">zip_t
*srcarchive</var>,
<var class="Fa" title="Fa" style="white-space: nowrap;">zip_uint64_t
srcidx</var>,
<var class="Fa" title="Fa" style="white-space: nowrap;">zip_flags_t
flags</var>,
<var class="Fa" title="Fa" style="white-space: nowrap;">zip_uint64_t
start</var>,
<var class="Fa" title="Fa" style="white-space: nowrap;">zip_int64_t
len</var>);
<h1 class="Sh" title="Sh" id="DESCRIPTION"><a class="selflink" href="#DESCRIPTION">DESCRIPTION</a></h1>
The function <b class="Fn" title="Fn">zip_source_zip</b>() creates a zip source
from a file in a zip archive. The <var class="Ar" title="Ar">srcarchive</var>
argument is the (open) zip archive containing the source zip file at index
<var class="Ar" title="Ar">srcidx</var>. <var class="Ar" title="Ar">len</var>
bytes from offset <var class="Ar" title="Ar">start</var> will be used in the
zip_source. If <var class="Ar" title="Ar">len</var> is 0 or -1, the rest of
the file, starting from <var class="Ar" title="Ar">start</var>, is used. If
<var class="Ar" title="Ar">start</var> is zero and
<var class="Ar" title="Ar">len</var> is -1, the whole file will be copied
without decompressing it.
<div class="Pp"></div>
Supported flags are:
<dl class="Bl-tag" style="margin-left: 28.20ex;">
<dt class="It-tag" style="margin-left: -28.20ex;">&#x00A0;</dt>
<dd class="It-tag">&#x00A0;</dd>
<dt class="It-tag" style="margin-left: -28.20ex;"><a class="selflink" href="#ZIP_FL_UNCHANGED"><code class="Dv" title="Dv" id="ZIP_FL_UNCHANGED">ZIP_FL_UNCHANGED</code></a></dt>
<dd class="It-tag">Try to get the original data without any changes that may
have been made to <var class="Ar" title="Ar">srcarchive</var> after
opening it.</dd>
<dt class="It-tag" style="margin-left: -28.20ex;">&#x00A0;</dt>
<dd class="It-tag">&#x00A0;</dd>
<dt class="It-tag" style="margin-left: -28.20ex;"><a class="selflink" href="#ZIP_FL_RECOMPRESS"><code class="Dv" title="Dv" id="ZIP_FL_RECOMPRESS">ZIP_FL_RECOMPRESS</code></a></dt>
<dd class="It-tag">When adding the data from
<var class="Ar" title="Ar">srcarchive</var>, re-compress it using the
current settings instead of copying the compressed data.</dd>
</dl>
<h1 class="Sh" title="Sh" id="RETURN_VALUES"><a class="selflink" href="#RETURN_VALUES">RETURN
VALUES</a></h1>
Upon successful completion, the created source is returned. Otherwise,
<code class="Dv" title="Dv">NULL</code> is returned and the error code in
<var class="Ar" title="Ar">archive</var> is set to indicate the error.
<h1 class="Sh" title="Sh" id="ERRORS"><a class="selflink" href="#ERRORS">ERRORS</a></h1>
<b class="Fn" title="Fn">zip_source_zip</b>() fails if:
<dl class="Bl-tag" style="margin-left: 23.40ex;">
<dt class="It-tag" style="margin-left: -23.40ex;">&#x00A0;</dt>
<dd class="It-tag">&#x00A0;</dd>
<dt class="It-tag" style="margin-left: -23.40ex;">[<a class="selflink" href="#ZIP_ER_CHANGED"><code class="Er" title="Er" id="ZIP_ER_CHANGED">ZIP_ER_CHANGED</code></a>]</dt>
<dd class="It-tag">Unchanged data was requested, but it is not available.</dd>
<dt class="It-tag" style="margin-left: -23.40ex;">&#x00A0;</dt>
<dd class="It-tag">&#x00A0;</dd>
<dt class="It-tag" style="margin-left: -23.40ex;">[<a class="selflink" href="#ZIP_ER_INVAL"><code class="Er" title="Er" id="ZIP_ER_INVAL">ZIP_ER_INVAL</code></a>]</dt>
<dd class="It-tag"><var class="Ar" title="Ar">srcarchive</var>,
<var class="Ar" title="Ar">srcidx</var>,
<var class="Ar" title="Ar">start</var>, or
<var class="Ar" title="Ar">len</var> are invalid.</dd>
<dt class="It-tag" style="margin-left: -23.40ex;">&#x00A0;</dt>
<dd class="It-tag">&#x00A0;</dd>
<dt class="It-tag" style="margin-left: -23.40ex;">[<a class="selflink" href="#ZIP_ER_MEMORY"><code class="Er" title="Er" id="ZIP_ER_MEMORY">ZIP_ER_MEMORY</code></a>]</dt>
<dd class="It-tag">Required memory could not be allocated.</dd>
</dl>
Additionally, it can return all error codes from
<b class="Fn" title="Fn">zip_stat_index</b>() and
<b class="Fn" title="Fn">zip_fopen_index</b>().
<h1 class="Sh" title="Sh" id="SEE_ALSO"><a class="selflink" href="#SEE_ALSO">SEE
ALSO</a></h1>
<a class="Xr" title="Xr" href="libzip.html">libzip(3)</a>,
<a class="Xr" title="Xr" href="zip_add.html">zip_add(3)</a>,
<a class="Xr" title="Xr" href="zip_replace.html">zip_replace(3)</a>,
<a class="Xr" title="Xr" href="zip_source.html">zip_source(3)</a>
<h1 class="Sh" title="Sh" id="HISTORY"><a class="selflink" href="#HISTORY">HISTORY</a></h1>
<b class="Fn" title="Fn">zip_source_zip</b>() was added in libzip 1.0.
<h1 class="Sh" title="Sh" id="AUTHORS"><a class="selflink" href="#AUTHORS">AUTHORS</a></h1>
<span class="An" title="An">Dieter Baron</span>
&lt;<a class="Mt" title="Mt" href="mailto:dillo@nih.at">dillo@nih.at</a>&gt;
and <span class="An" title="An">Thomas Klausner</span>
&lt;<a class="Mt" title="Mt" href="mailto:tk@giga.or.at">tk@giga.or.at</a>&gt;</div>
<table class="foot">
<tr>
<td class="foot-date">December 18, 2017</td>
<td class="foot-os">NetBSD 8.99.14</td>
</tr>
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