man/zip_file_extra_field_delete.html

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   zip_file_extra_field_delete.mdoc -- delete extra field for file in zip
   Copyright (C) 2012-2017 Dieter Baron and Thomas Klausner
  
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  <title>ZIP_FILE_EXTRA_FIELD_DELETE(3)</title>
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<table class="head">
  <tr>
    <td class="head-ltitle">ZIP_FILE_EXTRA_FIELD_DELETE(3)</td>
    <td class="head-vol">Library Functions Manual</td>
    <td class="head-rtitle">ZIP_FILE_EXTRA_FIELD_DELETE(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_field_delete</code>,
  <code class="Nm">zip_file_extra_field_delete_by_id</code> &#x2014;
<div class="Nd">delete extra field 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 &lt;<a class="In">zip.h</a>&gt;</code>
<p class="Pp"><var class="Ft">int</var>
  <br/>
  <code class="Fn">zip_file_extra_field_delete</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_index</var>,
    <var class="Fa" style="white-space: nowrap;">zip_flags_t flags</var>);</p>
<p class="Pp"><var class="Ft">int</var>
  <br/>
  <code class="Fn">zip_file_extra_field_delete_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_uint16_t
    extra_field_index</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_field_delete</code>() function deletes the
  extra field with index <var class="Ar">extra_field_index</var> for the file at
  position <var class="Ar">index</var> in the zip archive.
<p class="Pp">If <var class="Ar">extra_field_index</var> is
    <code class="Dv">ZIP_EXTRA_FIELD_ALL</code>, then all extra fields will be
    deleted.</p>
<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>Delete 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>Delete extra fields from the local file headers.</dd>
</dl>
</div>
<p class="Pp">The <code class="Fn">zip_file_extra_field_delete_by_id</code>()
    function deletes the extra field with ID (two-byte signature)
    <var class="Ar">extra_field_id</var> and index
    <var class="Ar">extra_field_index</var> (in other words, the
    <var class="Ar">extra_field_index</var><span class="No">'th</span> extra
    field with ID <var class="Ar">extra_field_id</var>) The other arguments are
    the same as for <code class="Fn">zip_file_extra_field_delete</code>()
    (<code class="Dv">ZIP_EXTRA_FIELD_ALL</code> will delete all extra fields of
    the specified ID).</p>
<p class="Pp">Please note that due to the library design, the index of an extra
    field may be different between central directory and local file headers. For
    this reason, it is not allowed to specify both
    <code class="Dv">ZIP_FL_CENTRAL</code> and
    <code class="Dv">ZIP_FL_LOCAL</code> in <var class="Ar">flags</var>, except
    when deleting all extra fields (i.e.,
    <var class="Ar">extra_field_index</var> being
    <code class="Dv">ZIP_EXTRA_FIELD_ALL</code>).</p>
</section>
<section class="Sh">
<h1 class="Sh" id="RETURN_VALUES"><a class="permalink" href="#RETURN_VALUES">RETURN
  VALUES</a></h1>
Upon successful completion 0 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_field_delete</code>() and
  <code class="Fn">zip_file_extra_field_delete_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_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>,
  <a class="Xr" href="zip_file_extra_fields_count.html">zip_file_extra_fields_count(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_field_delete</code>() and
  <code class="Fn">zip_file_extra_field_delete_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>
  &lt;<a class="Mt" href="mailto:dillo@nih.at">dillo@nih.at</a>&gt; and
  <span class="An">Thomas Klausner</span>
  &lt;<a class="Mt" href="mailto:tk@giga.or.at">tk@giga.or.at</a>&gt;
</section>
</div>
<table class="foot">
  <tr>
    <td class="foot-date">December 18, 2017</td>
    <td class="foot-os">NetBSD 8.99.35</td>
  </tr>
</table>
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