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zip_file_extra_fields_count.html
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<!DOCTYPE html>
<html>
<!-- This is an automatically generated file. Do not edit.
zip_file_extra_fields_count.mdoc -- count extra field for file in zip
Copyright (C) 2012-2017 Dieter Baron and Thomas Klausner
This file is part of libzip, a library to manipulate ZIP files.
The authors can be contacted at <[email protected]>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
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<head>
<meta charset="utf-8"/>
<link rel="stylesheet" href="../nih-man.css" type="text/css" media="all"/>
<title>ZIP_FILE_EXTRA_FIELDS_COUNT(3)</title>
</head>
<body>
<table class="head">
<tr>
<td class="head-ltitle">ZIP_FILE_EXTRA_FIELDS_COUNT(3)</td>
<td class="head-vol">Library Functions Manual</td>
<td class="head-rtitle">ZIP_FILE_EXTRA_FIELDS_COUNT(3)</td>
</tr>
</table>
<div class="manual-text">
<h1 class="Sh" title="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
<code class="Nm" title="Nm">zip_file_extra_fields_count</code>,
<code class="Nm" title="Nm">zip_file_extra_fields_count_by_id</code> —
<div class="Nd" title="Nd">count extra fields for file in zip</div>
<h1 class="Sh" title="Sh" id="LIBRARY"><a class="permalink" href="#LIBRARY">LIBRARY</a></h1>
libzip (-lzip)
<h1 class="Sh" title="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<code class="In" title="In">#include
<<a class="In" title="In">zip.h</a>></code>
<div class="Pp"></div>
<var class="Ft" title="Ft">zip_int16_t</var>
<br/>
<code class="Fn" title="Fn">zip_file_extra_fields_count</code>(<var class="Fa" title="Fa" style="white-space: nowrap;">zip_t
*archive</var>,
<var class="Fa" title="Fa" style="white-space: nowrap;">zip_uint64_t
index</var>,
<var class="Fa" title="Fa" style="white-space: nowrap;">zip_flags_t
flags</var>);
<div class="Pp"></div>
<var class="Ft" title="Ft">zip_int16_t</var>
<br/>
<code class="Fn" title="Fn">zip_file_extra_fields_count_by_id</code>(<var class="Fa" title="Fa" style="white-space: nowrap;">zip_t
*archive</var>,
<var class="Fa" title="Fa" style="white-space: nowrap;">zip_uint64_t
index</var>,
<var class="Fa" title="Fa" style="white-space: nowrap;">zip_uint16_t
extra_field_id</var>,
<var class="Fa" title="Fa" style="white-space: nowrap;">zip_flags_t
flags</var>);
<h1 class="Sh" title="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
The <code class="Fn" title="Fn">zip_file_extra_fields_count</code>() function
counts the extra fields for the file at position
<var class="Ar" title="Ar">index</var> in the zip archive.
<div class="Pp"></div>
The following <var class="Ar" title="Ar">flags</var> are supported:
<div class="Bl-tag" style="margin-left: 6.00ex;">
<dl class="Bl-tag" style="margin-left: 22.20ex;">
<dt style="margin-left: -22.20ex;"> </dt>
<dd> </dd>
<dt style="margin-left: -22.20ex;"><a class="permalink" href="#ZIP_FL_CENTRAL"><code class="Dv" title="Dv" id="ZIP_FL_CENTRAL">ZIP_FL_CENTRAL</code></a></dt>
<dd>Count extra fields from the archive's central directory.</dd>
<dt style="margin-left: -22.20ex;"> </dt>
<dd> </dd>
<dt style="margin-left: -22.20ex;"><a class="permalink" href="#ZIP_FL_LOCAL"><code class="Dv" title="Dv" id="ZIP_FL_LOCAL">ZIP_FL_LOCAL</code></a></dt>
<dd>Count extra fields from the local file headers.</dd>
<dt style="margin-left: -22.20ex;"> </dt>
<dd> </dd>
<dt style="margin-left: -22.20ex;"><a class="permalink" href="#ZIP_FL_UNCHANGED"><code class="Dv" title="Dv" id="ZIP_FL_UNCHANGED">ZIP_FL_UNCHANGED</code></a></dt>
<dd>Count the original unchanged extra fields, ignoring any changes made.</dd>
</dl>
</div>
<div class="Pp"></div>
The <code class="Fn" title="Fn">zip_file_extra_fields_count_by_id</code>()
function counts the extra fields with ID (two-byte signature)
<var class="Ar" title="Ar">extra_field_id</var>. The other arguments are the
same as for <code class="Fn" title="Fn">zip_file_extra_fields_count</code>().
<div class="Pp"></div>
Extra fields that are the same in the central directory and the local file
header are merged into one. Therefore, the counts with
<code class="Dv" title="Dv">ZIP_FL_CENTRAL</code> and
<code class="Dv" title="Dv">ZIP_FL_LOCAL</code> do not need to add up to the
same value as when given
<code class="Dv" title="Dv">ZIP_FL_CENTRAL|ZIP_FL_LOCAL</code> at the same
time.
<h1 class="Sh" title="Sh" id="RETURN_VALUES"><a class="permalink" href="#RETURN_VALUES">RETURN
VALUES</a></h1>
Upon successful completion, the requested number of extra fields is returned.
Otherwise, -1 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="permalink" href="#ERRORS">ERRORS</a></h1>
<code class="Fn" title="Fn">zip_file_extra_fields_count</code>() and
<code class="Fn" title="Fn">zip_file_extra_fields_count_by_id</code>() fail
if:
<dl class="Bl-tag" style="margin-left: 23.40ex;">
<dt style="margin-left: -23.40ex;"> </dt>
<dd> </dd>
<dt style="margin-left: -23.40ex;">[<a class="permalink" href="#ZIP_ER_NOENT"><code class="Er" title="Er" id="ZIP_ER_NOENT">ZIP_ER_NOENT</code></a>]</dt>
<dd><var class="Ar" title="Ar">index</var> is not a valid file index in
<var class="Ar" title="Ar">archive</var>.</dd>
</dl>
<h1 class="Sh" title="Sh" id="SEE_ALSO"><a class="permalink" 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_file_extra_field_delete.html">zip_file_extra_field_delete(3)</a>,
<a class="Xr" title="Xr" href="zip_file_extra_field_get.html">zip_file_extra_field_get(3)</a>,
<a class="Xr" title="Xr" href="zip_file_extra_field_set.html">zip_file_extra_field_set(3)</a>
<h1 class="Sh" title="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
<code class="Fn" title="Fn">zip_file_extra_fields_count</code>() and
<code class="Fn" title="Fn">zip_file_extra_fields_count_by_id</code>() were
added in libzip 0.11.
<h1 class="Sh" title="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
<span class="An" title="An">Dieter Baron</span>
<<a class="Mt" title="Mt" href="mailto:[email protected]">[email protected]</a>>
and <span class="An" title="An">Thomas Klausner</span>
<<a class="Mt" title="Mt" href="mailto:[email protected]">[email protected]</a>></div>
<table class="foot">
<tr>
<td class="foot-date">December 18, 2017</td>
<td class="foot-os">NetBSD 8.99.16</td>
</tr>
</table>
</body>
</html>