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319 lines
8.3 KiB
319 lines
8.3 KiB
4 years ago
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<!-- Creator : groff version 1.22.3 -->
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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"http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta name="generator" content="groff -Thtml, see www.gnu.org">
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<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
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<meta name="Content-Style" content="text/css">
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<style type="text/css">
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p { margin-top: 0; margin-bottom: 0; vertical-align: top }
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pre { margin-top: 0; margin-bottom: 0; vertical-align: top }
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table { margin-top: 0; margin-bottom: 0; vertical-align: top }
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h1 { text-align: center }
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</style>
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<title>ICONV_OPEN</title>
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</head>
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<body>
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<h1 align="center">ICONV_OPEN</h1>
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<a href="#NAME">NAME</a><br>
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<a href="#SYNOPSIS">SYNOPSIS</a><br>
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<a href="#DESCRIPTION">DESCRIPTION</a><br>
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<a href="#RETURN VALUE">RETURN VALUE</a><br>
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<a href="#ERRORS">ERRORS</a><br>
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<a href="#CONFORMING TO">CONFORMING TO</a><br>
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<a href="#SEE ALSO">SEE ALSO</a><br>
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<hr>
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<h2>NAME
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<a name="NAME"></a>
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</h2>
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<p style="margin-left:11%; margin-top: 1em">iconv_open
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− allocate descriptor for character set conversion</p>
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<h2>SYNOPSIS
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<a name="SYNOPSIS"></a>
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</h2>
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<p style="margin-left:11%; margin-top: 1em"><b>#include
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<iconv.h></b></p>
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<p style="margin-left:11%; margin-top: 1em"><b>iconv_t
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iconv_open (const char*</b> <i>tocode</i><b>, const
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char*</b> <i>fromcode</i><b>);</b></p>
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<h2>DESCRIPTION
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<a name="DESCRIPTION"></a>
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</h2>
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<p style="margin-left:11%; margin-top: 1em">The
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<b>iconv_open</b> function allocates a conversion descriptor
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suitable for converting byte sequences from character
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encoding <i>fromcode</i> to character encoding
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<i>tocode</i>.</p>
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<p style="margin-left:11%; margin-top: 1em">The values
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permitted for <i>fromcode</i> and <i>tocode</i> and the
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supported combinations are system dependent. For the
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libiconv library, the following encodings are supported, in
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all combinations. <br>
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European languages</p>
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<p style="margin-left:22%;">ASCII,
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ISO−8859−{1,2,3,4,5,7,9,10,13,14,15,16},
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KOI8−R, KOI8−U, KOI8−RU,
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CP{1250,1251,1252,1253,1254,1257}, CP{850,866,1131},
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Mac{Roman,CentralEurope,Iceland,Croatian,Romania},
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Mac{Cyrillic,Ukraine,Greek,Turkish}, Macintosh</p>
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<p style="margin-left:11%;">Semitic languages</p>
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<p style="margin-left:22%;">ISO−8859−{6,8},
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CP{1255,1256}, CP862, Mac{Hebrew,Arabic}</p>
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<p style="margin-left:11%;">Japanese</p>
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<p style="margin-left:22%;">EUC−JP, SHIFT_JIS, CP932,
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ISO−2022−JP, ISO−2022−JP−2,
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ISO−2022−JP−1,
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ISO-2022−JP−MS</p>
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<p style="margin-left:11%;">Chinese</p>
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<p style="margin-left:22%;">EUC−CN, HZ, GBK, CP936,
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GB18030, EUC−TW, BIG5, CP950, BIG5−HKSCS,
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BIG5−HKSCS:2004, BIG5−HKSCS:2001,
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BIG5−HKSCS:1999, ISO−2022−CN,
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ISO−2022−CN−EXT</p>
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<table width="100%" border="0" rules="none" frame="void"
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cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="9%">
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<p>Korean</p></td>
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<td width="2%"></td>
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<td width="50%">
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<p>EUC−KR, CP949, ISO−2022−KR, JOHAB</p></td>
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<td width="28%">
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</td></tr>
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</table>
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<p style="margin-left:11%;">Armenian</p>
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<p style="margin-left:22%;">ARMSCII−8</p>
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<p style="margin-left:11%;">Georgian</p>
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<p style="margin-left:22%;">Georgian−Academy,
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Georgian−PS</p>
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<table width="100%" border="0" rules="none" frame="void"
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cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="9%">
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<p>Tajik</p></td>
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<td width="2%"></td>
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<td width="35%">
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<p>KOI8−T</p></td>
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<td width="43%">
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</td></tr>
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="9%">
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<p>Kazakh</p></td>
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<td width="2%"></td>
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<td width="35%">
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<p>PT154, RK1048</p></td>
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<td width="43%">
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</td></tr>
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="9%">
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<p>Thai</p></td>
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<td width="2%"></td>
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<td width="35%">
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<p>TIS−620, CP874, MacThai</p></td>
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<td width="43%">
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</td></tr>
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</table>
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<p style="margin-left:11%;">Laotian</p>
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<p style="margin-left:22%;">MuleLao−1, CP1133</p>
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<p style="margin-left:11%;">Vietnamese</p>
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<p style="margin-left:22%;">VISCII, TCVN, CP1258</p>
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<p style="margin-left:11%;">Platform specifics</p>
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<p style="margin-left:22%;">HP−ROMAN8, NEXTSTEP</p>
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<p style="margin-left:11%;">Full Unicode</p>
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<p style="margin-left:22%;">UTF−8 <br>
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UCS−2, UCS−2BE, UCS−2LE <br>
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UCS−4, UCS−4BE, UCS−4LE <br>
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UTF−16, UTF−16BE, UTF−16LE <br>
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UTF−32, UTF−32BE, UTF−32LE <br>
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UTF−7 <br>
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C99, JAVA</p>
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<p style="margin-left:11%;">Full Unicode, in terms of
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<b>uint16_t</b> or <b>uint32_t</b></p>
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<p style="margin-left:22%;">(with machine dependent
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endianness and alignment) <br>
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UCS−2−INTERNAL, UCS−4−INTERNAL</p>
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<p style="margin-left:11%;">Locale dependent, in terms of
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<b>char</b> or <b>wchar_t</b></p>
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<p style="margin-left:22%;">(with machine dependent
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endianness and alignment, and with semantics depending on
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the OS and the current LC_CTYPE locale facet) <br>
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char, wchar_t</p>
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<p style="margin-left:11%; margin-top: 1em">When configured
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with the option
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<b>−−enable−extra−encodings</b>, it
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also provides support for a few extra encodings: <br>
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European languages</p>
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<p style="margin-left:22%;">CP{437,737,775,852,853,855,857,858,860,861,863,865,869,1125}</p>
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<p style="margin-left:11%;">Semitic languages</p>
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<p style="margin-left:22%;">CP864</p>
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<p style="margin-left:11%;">Japanese</p>
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<p style="margin-left:22%;">EUC−JISX0213,
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Shift_JISX0213, ISO−2022−JP−3</p>
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<p style="margin-left:11%;">Chinese</p>
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<p style="margin-left:22%;">BIG5−2003
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(experimental)</p>
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<p style="margin-left:11%;">Turkmen</p>
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<p style="margin-left:22%;">TDS565</p>
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<p style="margin-left:11%;">Platform specifics</p>
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<p style="margin-left:22%;">ATARIST,
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RISCOS−LATIN1</p>
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<p style="margin-left:11%; margin-top: 1em">The empty
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encoding name "" is equivalent to
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"char": it denotes the locale dependent character
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encoding.</p>
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<p style="margin-left:11%; margin-top: 1em">When the string
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"//TRANSLIT" is appended to <i>tocode</i>,
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transliteration is activated. This means that when a
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character cannot be represented in the target character set,
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it can be approximated through one or several characters
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that look similar to the original character.</p>
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<p style="margin-left:11%; margin-top: 1em">When the string
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"//IGNORE" is appended to <i>tocode</i>,
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characters that cannot be represented in the target
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character set will be silently discarded.</p>
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<p style="margin-left:11%; margin-top: 1em">The resulting
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conversion descriptor can be used with <b>iconv</b> any
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number of times. It remains valid until deallocated using
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<b>iconv_close</b>.</p>
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<p style="margin-left:11%; margin-top: 1em">A conversion
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descriptor contains a conversion state. After creation using
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<b>iconv_open</b>, the state is in the initial state. Using
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<b>iconv</b> modifies the descriptor’s conversion
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state. (This implies that a conversion descriptor can not be
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used in multiple threads simultaneously.) To bring the state
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back to the initial state, use <b>iconv</b> with NULL as
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<i>inbuf</i> argument.</p>
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<h2>RETURN VALUE
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<a name="RETURN VALUE"></a>
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</h2>
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<p style="margin-left:11%; margin-top: 1em">The
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<b>iconv_open</b> function returns a freshly allocated
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conversion descriptor. In case of error, it sets
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<b>errno</b> and returns (iconv_t)(−1).</p>
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<h2>ERRORS
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<a name="ERRORS"></a>
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</h2>
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<p style="margin-left:11%; margin-top: 1em">The following
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error can occur, among others:</p>
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<table width="100%" border="0" rules="none" frame="void"
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cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="9%">
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<p><b>EINVAL</b></p></td>
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<td width="2%"></td>
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<td width="78%">
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<p>The conversion from <i>fromcode</i> to <i>tocode</i> is
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not supported by the implementation.</p></td></tr>
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</table>
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<h2>CONFORMING TO
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<a name="CONFORMING TO"></a>
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</h2>
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<p style="margin-left:11%; margin-top: 1em">POSIX:2001</p>
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<h2>SEE ALSO
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||
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<a name="SEE ALSO"></a>
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</h2>
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<p style="margin-left:11%; margin-top: 1em"><b>iconv</b>(3)
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<b>iconvctl</b>(3) <b>iconv_close</b>(3)</p>
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<hr>
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</body>
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</html>
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