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<title>ZIP_FILE_GET_COMMENT(3)</title>
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<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>
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<h1 class="Sh" id="NAME">NAME</h1>
<b class="Nm">zip_file_get_comment</b> &#8212; <span class="Nd">get comment for
file in zip</span>
<h1 class="Sh" id="LIBRARY">LIBRARY</h1>
libzip (-lzip)
<h1 class="Sh" id="SYNOPSIS">SYNOPSIS</h1>
<b class="In">#include &lt;<a class="In">zip.h</a>&gt;</b>
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<var class="Ft">const char *</var>
<br/>
<b class="Fn">zip_file_get_comment</b>(<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>);
<h1 class="Sh" id="DESCRIPTION">DESCRIPTION</h1>
The <b class="Fn">zip_file_get_comment</b>() 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.
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Additionally, the following <var class="Ar">flags</var> are supported:
<div class="Bl-tag" style="margin-left: 6.00ex;">
<dl class="Bl-tag" style="margin-left: 19.00ex;">
<dt class="It-tag" style="margin-left: -19.00ex;">&#160;</dt>
<dd class="It-tag">&#160;</dd>
<dt class="It-tag" style="margin-left: -19.00ex;"><code class="Dv">ZIP_FL_ENC_RAW</code></dt>
<dd class="It-tag">Return the unmodified comment as it is in the ZIP
archive.</dd>
<dt class="It-tag" style="margin-left: -19.00ex;">&#160;</dt>
<dd class="It-tag">&#160;</dd>
<dt class="It-tag" style="margin-left: -19.00ex;"><code class="Dv">ZIP_FL_ENC_GUESS</code></dt>
<dd class="It-tag">(Default.) Guess the encoding of the comment in the ZIP
archive and convert it to UTF-8, if necessary.</dd>
<dt class="It-tag" style="margin-left: -19.00ex;">&#160;</dt>
<dd class="It-tag">&#160;</dd>
<dt class="It-tag" style="margin-left: -19.00ex;"><code class="Dv">ZIP_FL_ENC_STRICT</code></dt>
<dd class="It-tag">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>
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<i class="Em">Note</i>: ASCII is a subset of both CP-437 and UTF-8.
<h1 class="Sh" id="RETURN_VALUES">RETURN VALUES</h1>
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.
<h1 class="Sh" id="ERRORS">ERRORS</h1>
<b class="Fn">zip_file_get_comment</b>() fails if:
<dl class="Bl-tag" style="margin-left: 17.00ex;">
<dt class="It-tag" style="margin-left: -17.00ex;">&#160;</dt>
<dd class="It-tag">&#160;</dd>
<dt class="It-tag" style="margin-left: -17.00ex;">[<code class="Er">ZIP_ER_INVAL</code>]</dt>
<dd class="It-tag"><var class="Ar">index</var> is not a valid file index in
<var class="Ar">archive</var>.</dd>
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<h1 class="Sh" id="SEE_ALSO">SEE ALSO</h1>
<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>
<h1 class="Sh" id="HISTORY">HISTORY</h1>
<b class="Fn">zip_file_get_comment</b>() was added in libzip 0.11.
<h1 class="Sh" id="AUTHORS">AUTHORS</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;</div>
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<td class="foot-date">December 18, 2017</td>
<td class="foot-os">NetBSD 8.99.14</td>
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