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| zip_file_extra_fields_count.mdoc -- count extra field for file in zip |
| 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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| <head> |
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| <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"> |
| <section class="Sh"> |
| <h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1> |
| <code class="Nm">zip_file_extra_fields_count</code>, |
| <code class="Nm">zip_file_extra_fields_count_by_id</code> — |
| <div class="Nd">count extra fields for file in zip</div> |
| </section> |
| <section class="Sh"> |
| <h1 class="Sh" id="LIBRARY"><a class="permalink" href="#LIBRARY">LIBRARY</a></h1> |
| libzip (-lzip) |
| </section> |
| <section class="Sh"> |
| <h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1> |
| <code class="In">#include <<a class="In">zip.h</a>></code> |
| <p class="Pp"><var class="Ft">zip_int16_t</var> |
| <br/> |
| <code class="Fn">zip_file_extra_fields_count</code>(<var class="Fa" style="white-space: nowrap;">zip_t |
| *archive</var>, <var class="Fa" style="white-space: nowrap;">zip_uint64_t |
| index</var>, <var class="Fa" style="white-space: nowrap;">zip_flags_t |
| flags</var>);</p> |
| <p class="Pp"><var class="Ft">zip_int16_t</var> |
| <br/> |
| <code class="Fn">zip_file_extra_fields_count_by_id</code>(<var class="Fa" style="white-space: nowrap;">zip_t |
| *archive</var>, <var class="Fa" style="white-space: nowrap;">zip_uint64_t |
| index</var>, <var class="Fa" style="white-space: nowrap;">zip_uint16_t |
| extra_field_id</var>, |
| <var class="Fa" style="white-space: nowrap;">zip_flags_t flags</var>);</p> |
| </section> |
| <section class="Sh"> |
| <h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1> |
| The <code class="Fn">zip_file_extra_fields_count</code>() function counts the |
| extra fields for the file at position <var class="Ar">index</var> in the zip |
| archive. |
| <p class="Pp">The following <var class="Ar">flags</var> are supported:</p> |
| <div class="Bd-indent"> |
| <dl class="Bl-tag"> |
| <dt><a class="permalink" href="#ZIP_FL_CENTRAL"><code class="Dv" id="ZIP_FL_CENTRAL">ZIP_FL_CENTRAL</code></a></dt> |
| <dd>Count extra fields from the archive's central directory.</dd> |
| <dt><a class="permalink" href="#ZIP_FL_LOCAL"><code class="Dv" id="ZIP_FL_LOCAL">ZIP_FL_LOCAL</code></a></dt> |
| <dd>Count extra fields from the local file headers.</dd> |
| <dt><a class="permalink" href="#ZIP_FL_UNCHANGED"><code class="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> |
| <p class="Pp">The <code class="Fn">zip_file_extra_fields_count_by_id</code>() |
| function counts the extra fields with ID (two-byte signature) |
| <var class="Ar">extra_field_id</var>. The other arguments are the same as |
| for <code class="Fn">zip_file_extra_fields_count</code>().</p> |
| <p class="Pp">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">ZIP_FL_CENTRAL</code> and |
| <code class="Dv">ZIP_FL_LOCAL</code> do not need to add up to the same value |
| as when given <code class="Dv">ZIP_FL_CENTRAL|ZIP_FL_LOCAL</code> at the |
| same time.</p> |
| </section> |
| <section class="Sh"> |
| <h1 class="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">archive</var> |
| is set to indicate the error. |
| </section> |
| <section class="Sh"> |
| <h1 class="Sh" id="ERRORS"><a class="permalink" href="#ERRORS">ERRORS</a></h1> |
| <code class="Fn">zip_file_extra_fields_count</code>() and |
| <code class="Fn">zip_file_extra_fields_count_by_id</code>() fail if: |
| <dl class="Bl-tag"> |
| <dt>[<a class="permalink" href="#ZIP_ER_NOENT"><code class="Er" id="ZIP_ER_NOENT">ZIP_ER_NOENT</code></a>]</dt> |
| <dd><var class="Ar">index</var> is not a valid file index in |
| <var class="Ar">archive</var>.</dd> |
| </dl> |
| </section> |
| <section class="Sh"> |
| <h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE |
| ALSO</a></h1> |
| <a class="Xr" href="libzip.html">libzip(3)</a>, |
| <a class="Xr" href="zip_file_extra_field_delete.html">zip_file_extra_field_delete(3)</a>, |
| <a class="Xr" href="zip_file_extra_field_get.html">zip_file_extra_field_get(3)</a>, |
| <a class="Xr" href="zip_file_extra_field_set.html">zip_file_extra_field_set(3)</a> |
| </section> |
| <section class="Sh"> |
| <h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1> |
| <code class="Fn">zip_file_extra_fields_count</code>() and |
| <code class="Fn">zip_file_extra_fields_count_by_id</code>() were added in |
| libzip 0.11. |
| </section> |
| <section class="Sh"> |
| <h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1> |
| <span class="An">Dieter Baron</span> |
| <<a class="Mt" href="mailto:dillo@nih.at">dillo@nih.at</a>> and |
| <span class="An">Thomas Klausner</span> |
| <<a class="Mt" href="mailto:tk@giga.or.at">tk@giga.or.at</a>> |
| </section> |
| </div> |
| <table class="foot"> |
| <tr> |
| <td class="foot-date">December 18, 2017</td> |
| <td class="foot-os">NetBSD 9.99.41</td> |
| </tr> |
| </table> |
| </body> |
| </html> |
