150 lines
7.0 KiB
HTML
Executable File
150 lines
7.0 KiB
HTML
Executable File
<!DOCTYPE html>
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<html>
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<!-- This is an automatically generated file. Do not edit.
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zip_file_extra_fields_count.mdoc -- count extra field for file in zip
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Copyright (C) 2012-2017 Dieter Baron and Thomas Klausner
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This file is part of libzip, a library to manipulate ZIP files.
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The authors can be contacted at <libzip@nih.at>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. The names of the authors may not be used to endorse or promote
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products derived from this software without specific prior
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written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
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OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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-->
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<head>
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<meta charset="utf-8"/>
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<link rel="stylesheet" href="../nih-man.css" type="text/css" media="all"/>
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<title>ZIP_FILE_EXTRA_FIELDS_COUNT(3)</title>
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</head>
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<body>
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<table class="head">
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<tr>
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<td class="head-ltitle">ZIP_FILE_EXTRA_FIELDS_COUNT(3)</td>
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<td class="head-vol">Library Functions Manual</td>
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<td class="head-rtitle">ZIP_FILE_EXTRA_FIELDS_COUNT(3)</td>
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</tr>
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</table>
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<div class="manual-text">
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<section class="Sh">
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<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
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<code class="Nm">zip_file_extra_fields_count</code>,
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<code class="Nm">zip_file_extra_fields_count_by_id</code> —
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<div class="Nd">count extra fields for file in zip</div>
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</section>
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<section class="Sh">
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<h1 class="Sh" id="LIBRARY"><a class="permalink" href="#LIBRARY">LIBRARY</a></h1>
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libzip (-lzip)
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</section>
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<section class="Sh">
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<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
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<code class="In">#include <<a class="In">zip.h</a>></code>
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<p class="Pp"><var class="Ft">zip_int16_t</var>
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<br/>
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<code class="Fn">zip_file_extra_fields_count</code>(<var class="Fa" style="white-space: nowrap;">zip_t
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*archive</var>, <var class="Fa" style="white-space: nowrap;">zip_uint64_t
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index</var>, <var class="Fa" style="white-space: nowrap;">zip_flags_t
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flags</var>);</p>
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<p class="Pp"><var class="Ft">zip_int16_t</var>
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<br/>
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<code class="Fn">zip_file_extra_fields_count_by_id</code>(<var class="Fa" style="white-space: nowrap;">zip_t
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*archive</var>, <var class="Fa" style="white-space: nowrap;">zip_uint64_t
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index</var>, <var class="Fa" style="white-space: nowrap;">zip_uint16_t
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extra_field_id</var>,
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<var class="Fa" style="white-space: nowrap;">zip_flags_t flags</var>);</p>
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</section>
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<section class="Sh">
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<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
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The <code class="Fn">zip_file_extra_fields_count</code>() function counts the
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extra fields for the file at position <var class="Ar">index</var> in the zip
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archive.
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<p class="Pp">The following <var class="Ar">flags</var> are supported:</p>
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<div class="Bd-indent">
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<dl class="Bl-tag">
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<dt><a class="permalink" href="#ZIP_FL_CENTRAL"><code class="Dv" id="ZIP_FL_CENTRAL">ZIP_FL_CENTRAL</code></a></dt>
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<dd>Count extra fields from the archive's central directory.</dd>
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<dt><a class="permalink" href="#ZIP_FL_LOCAL"><code class="Dv" id="ZIP_FL_LOCAL">ZIP_FL_LOCAL</code></a></dt>
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<dd>Count extra fields from the local file headers.</dd>
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<dt><a class="permalink" href="#ZIP_FL_UNCHANGED"><code class="Dv" id="ZIP_FL_UNCHANGED">ZIP_FL_UNCHANGED</code></a></dt>
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<dd>Count the original unchanged extra fields, ignoring any changes made.</dd>
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</dl>
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</div>
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<p class="Pp">The <code class="Fn">zip_file_extra_fields_count_by_id</code>()
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function counts the extra fields with ID (two-byte signature)
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<var class="Ar">extra_field_id</var>. The other arguments are the same as
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for <code class="Fn">zip_file_extra_fields_count</code>().</p>
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<p class="Pp">Extra fields that are the same in the central directory and the
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local file header are merged into one. Therefore, the counts with
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<code class="Dv">ZIP_FL_CENTRAL</code> and
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<code class="Dv">ZIP_FL_LOCAL</code> do not need to add up to the same value
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as when given <code class="Dv">ZIP_FL_CENTRAL|ZIP_FL_LOCAL</code> at the
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same time.</p>
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</section>
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<section class="Sh">
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<h1 class="Sh" id="RETURN_VALUES"><a class="permalink" href="#RETURN_VALUES">RETURN
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VALUES</a></h1>
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Upon successful completion, the requested number of extra fields is returned.
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Otherwise, -1 is returned and the error code in <var class="Ar">archive</var>
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is set to indicate the error.
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</section>
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<section class="Sh">
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<h1 class="Sh" id="ERRORS"><a class="permalink" href="#ERRORS">ERRORS</a></h1>
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<code class="Fn">zip_file_extra_fields_count</code>() and
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<code class="Fn">zip_file_extra_fields_count_by_id</code>() fail if:
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<dl class="Bl-tag">
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<dt>[<a class="permalink" href="#ZIP_ER_NOENT"><code class="Er" id="ZIP_ER_NOENT">ZIP_ER_NOENT</code></a>]</dt>
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<dd><var class="Ar">index</var> is not a valid file index in
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<var class="Ar">archive</var>.</dd>
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</dl>
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</section>
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<section class="Sh">
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<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
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ALSO</a></h1>
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<a class="Xr" href="libzip.html">libzip(3)</a>,
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<a class="Xr" href="zip_file_extra_field_delete.html">zip_file_extra_field_delete(3)</a>,
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<a class="Xr" href="zip_file_extra_field_get.html">zip_file_extra_field_get(3)</a>,
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<a class="Xr" href="zip_file_extra_field_set.html">zip_file_extra_field_set(3)</a>
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</section>
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<section class="Sh">
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<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
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<code class="Fn">zip_file_extra_fields_count</code>() and
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<code class="Fn">zip_file_extra_fields_count_by_id</code>() were added in
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libzip 0.11.
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</section>
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<section class="Sh">
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<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
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<span class="An">Dieter Baron</span>
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<<a class="Mt" href="mailto:dillo@nih.at">dillo@nih.at</a>> and
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<span class="An">Thomas Klausner</span>
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<<a class="Mt" href="mailto:tk@giga.or.at">tk@giga.or.at</a>>
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</section>
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</div>
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<table class="foot">
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<tr>
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<td class="foot-date">December 18, 2017</td>
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<td class="foot-os">NetBSD 8.99.35</td>
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</tr>
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</table>
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</body>
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</html>
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