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<!-- This is an automatically generated file. Do not edit.
zip_file_get_comment.mdoc -- get comment for file in zip
Copyright (C) 2006-2021 Dieter Baron and Thomas Klausner
This file is part of libzip, a library to manipulate ZIP files.
The authors can be contacted at <info@libzip.org>
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<title>ZIP_FILE_GET_COMMENT(3)</title>
</head>
<body>
<table class="head">
<tr>
<td class="head-ltitle">ZIP_FILE_GET_COMMENT(3)</td>
<td class="head-vol">Library Functions Manual</td>
<td class="head-rtitle">ZIP_FILE_GET_COMMENT(3)</td>
</tr>
</table>
<div class="manual-text">
<section class="Sh">
<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
<p class="Pp"><code class="Nm">zip_file_get_comment</code> —
<span class="Nd">get comment for file in zip</span></p>
</section>
<section class="Sh">
<h1 class="Sh" id="LIBRARY"><a class="permalink" href="#LIBRARY">LIBRARY</a></h1>
<p class="Pp">libzip (-lzip)</p>
</section>
<section class="Sh">
<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<p class="Pp"><code class="In">#include
<<a class="In">zip.h</a>></code></p>
<p class="Pp"><var class="Ft">const char *</var>
<br/>
<code class="Fn">zip_file_get_comment</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_uint32_t
*lenp</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>
<p class="Pp">The
<a class="permalink" href="#zip_file_get_comment"><code class="Fn" id="zip_file_get_comment">zip_file_get_comment</code></a>()
function returns the comment for the file at position
<var class="Ar">index</var> in the zip archive. The name is in UTF-8
encoding unless <code class="Dv">ZIP_FL_ENC_RAW</code> was specified (see
below). This pointer should not be modified or
<a class="Xr" href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/free.html">free(3)</a>'d, and becomes invalid when
<var class="Ar">archive</var> is closed. If <var class="Ar">lenp</var> is
not <code class="Dv">NULL</code>, the integer to which it points will be set
to the length of the comment. If <var class="Ar">flags</var> is set to
<code class="Dv">ZIP_FL_UNCHANGED</code>, the original unchanged comment is
returned.</p>
<p class="Pp">Additionally, the following <var class="Ar">flags</var> are
supported:</p>
<div class="Bd-indent">
<dl class="Bl-tag">
<dt id="ZIP_FL_ENC_RAW"><a class="permalink" href="#ZIP_FL_ENC_RAW"><code class="Dv">ZIP_FL_ENC_RAW</code></a></dt>
<dd>Return the unmodified comment as it is in the ZIP archive.</dd>
<dt id="ZIP_FL_ENC_GUESS"><a class="permalink" href="#ZIP_FL_ENC_GUESS"><code class="Dv">ZIP_FL_ENC_GUESS</code></a></dt>
<dd>(Default.) Guess the encoding of the comment in the ZIP archive and
convert it to UTF-8, if necessary. (Only CP-437 and UTF-8 are
recognized.)</dd>
<dt id="ZIP_FL_ENC_STRICT"><a class="permalink" href="#ZIP_FL_ENC_STRICT"><code class="Dv">ZIP_FL_ENC_STRICT</code></a></dt>
<dd>Follow the ZIP specification for file names and extend it to file
comments, expecting them to be encoded in CP-437 in the ZIP archive
(except if it is a UTF-8 comment from the special extra field). Convert it
to UTF-8.</dd>
</dl>
</div>
<a class="permalink" href="#Note"><i class="Em" id="Note">Note</i></a>: ASCII is
a subset of both CP-437 and UTF-8.
</section>
<section class="Sh">
<h1 class="Sh" id="RETURN_VALUES"><a class="permalink" href="#RETURN_VALUES">RETURN
VALUES</a></h1>
<p class="Pp">Upon successful completion, a pointer to the comment is returned,
or <code class="Dv">NULL</code> if there is no comment. In case of an error,
<code class="Dv">NULL</code> is returned and the error code in
<var class="Ar">archive</var> is set to indicate the error.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="ERRORS"><a class="permalink" href="#ERRORS">ERRORS</a></h1>
<p class="Pp"><code class="Fn">zip_file_get_comment</code>() fails if:</p>
<dl class="Bl-tag">
<dt id="ZIP_ER_INVAL">[<a class="permalink" href="#ZIP_ER_INVAL"><code class="Er">ZIP_ER_INVAL</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>
<p class="Pp"><a class="Xr" href="libzip.html">libzip(3)</a>,
<a class="Xr" href="zip_file_set_comment.html">zip_file_set_comment(3)</a>,
<a class="Xr" href="zip_get_archive_comment.html">zip_get_archive_comment(3)</a></p>
</section>
<section class="Sh">
<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
<p class="Pp"><code class="Fn">zip_file_get_comment</code>() was added in libzip
0.11.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
<p class="Pp"><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:wiz@gatalith.at">wiz@gatalith.at</a>></p>
</section>
</div>
<table class="foot">
<tr>
<td class="foot-date">September 22, 2020</td>
<td class="foot-os">NiH</td>
</tr>
</table>
</body>
</html>
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