/*
* mimeenc.c - translate our internal character set codes to and
* from MIME standard character-set names.
*
*/
#include <ctype.h>
#include "charset.h"
#include "internal.h"
static const struct {
const char *name;
int charset;
} mimeencs[] = {
/*
* Most of these names are taken from
*
* http://www.iana.org/assignments/character-sets
*
* Where multiple encoding names map to the same encoding id
* (such as the variety of aliases for ISO-8859-1), the first
* is considered canonical and will be returned when
* translating the id to a string.
*
* I also list here a few names which aren't in the above web
* page, but which I've seen in the wild in real mail. These
* are marked with a comment saying WILD.
*/
{ "US-ASCII", CS_ASCII },
{ "ANSI_X3.4-1968", CS_ASCII },
{ "iso-ir-6", CS_ASCII },
{ "ANSI_X3.4-1986", CS_ASCII },
{ "ISO_646.irv:1991", CS_ASCII },
{ "ASCII", CS_ASCII },
{ "ISO646-US", CS_ASCII },
{ "us", CS_ASCII },
{ "IBM367", CS_ASCII },
{ "cp367", CS_ASCII },
{ "csASCII", CS_ASCII },
{ "646", CS_ASCII }, /* WILD */
{ "BS_4730", CS_BS4730 },
{ "iso-ir-4", CS_BS4730 },
{ "ISO646-GB", CS_BS4730 },
{ "gb", CS_BS4730 },
{ "uk", CS_BS4730 },
{ "csISO4UnitedKingdom", CS_BS4730 },
{ "ISO-8859-1", CS_ISO8859_1 },
{ "ISO8859-1", CS_ISO8859_1 }, /* WILD */
{ "iso-ir-100", CS_ISO8859_1 },
{ "ISO_8859-1", CS_ISO8859_1 },
{ "ISO_8859-1:1987", CS_ISO8859_1 },
{ "latin1", CS_ISO8859_1 },
{ "l1", CS_ISO8859_1 },
{ "IBM819", CS_ISO8859_1 },
{ "CP819", CS_ISO8859_1 },
{ "csISOLatin1", CS_ISO8859_1 },
{ "ISO-8859-2", CS_ISO8859_2 },
{ "ISO8859-2", CS_ISO8859_2 }, /* WILD */
{ "ISO_8859-2:1987", CS_ISO8859_2 },
{ "iso-ir-101", CS_ISO8859_2 },
{ "ISO_8859-2", CS_ISO8859_2 },
{ "latin2", CS_ISO8859_2 },
{ "l2", CS_ISO8859_2 },
{ "csISOLatin2", CS_ISO8859_2 },
{ "ISO-8859-3", CS_ISO8859_3 },
{ "ISO8859-3", CS_ISO8859_3 }, /* WILD */
{ "ISO_8859-3:1988", CS_ISO8859_3 },
{ "iso-ir-109", CS_ISO8859_3 },
{ "ISO_8859-3", CS_ISO8859_3 },
{ "latin3", CS_ISO8859_3 },
{ "l3", CS_ISO8859_3 },
{ "csISOLatin3", CS_ISO8859_3 },
{ "ISO-8859-4", CS_ISO8859_4 },
{ "ISO8859-4", CS_ISO8859_4 }, /* WILD */
{ "ISO_8859-4:1988", CS_ISO8859_4 },
{ "iso-ir-110", CS_ISO8859_4 },
{ "ISO_8859-4", CS_ISO8859_4 },
{ "latin4", CS_ISO8859_4 },
{ "l4", CS_ISO8859_4 },
{ "csISOLatin4", CS_ISO8859_4 },
{ "ISO-8859-5", CS_ISO8859_5 },
{ "ISO8859-5", CS_ISO8859_5 }, /* WILD */
{ "ISO_8859-5:1988", CS_ISO8859_5 },
{ "iso-ir-144", CS_ISO8859_5 },
{ "ISO_8859-5", CS_ISO8859_5 },
{ "cyrillic", CS_ISO8859_5 },
{ "csISOLatinCyrillic", CS_ISO8859_5 },
{ "ISO-8859-6", CS_ISO8859_6 },
{ "ISO8859-6", CS_ISO8859_6 }, /* WILD */
{ "ISO_8859-6:1987", CS_ISO8859_6 },
{ "iso-ir-127", CS_ISO8859_6 },
{ "ISO_8859-6", CS_ISO8859_6 },
{ "ECMA-114", CS_ISO8859_6 },
{ "ASMO-708", CS_ISO8859_6 },
{ "arabic", CS_ISO8859_6 },
{ "csISOLatinArabic", CS_ISO8859_6 },
{ "ISO-8859-7", CS_ISO8859_7 },
{ "ISO8859-7", CS_ISO8859_7 }, /* WILD */
{ "ISO_8859-7:1987", CS_ISO8859_7 },
{ "iso-ir-126", CS_ISO8859_7 },
{ "ISO_8859-7", CS_ISO8859_7 },
{ "ELOT_928", CS_ISO8859_7 },
{ "ECMA-118", CS_ISO8859_7 },
{ "greek", CS_ISO8859_7 },
{ "greek8", CS_ISO8859_7 },
{ "csISOLatinGreek", CS_ISO8859_7 },
{ "ISO-8859-8", CS_ISO8859_8 },
{ "ISO8859-8", CS_ISO8859_8 }, /* WILD */
{ "ISO_8859-8:1988", CS_ISO8859_8 },
{ "iso-ir-138", CS_ISO8859_8 },
{ "ISO_8859-8", CS_ISO8859_8 },
{ "hebrew", CS_ISO8859_8 },
{ "csISOLatinHebrew", CS_ISO8859_8 },
{ "ISO-8859-9", CS_ISO8859_9 },
{ "ISO8859-9", CS_ISO8859_9 }, /* WILD */
{ "ISO_8859-9:1989", CS_ISO8859_9 },
{ "iso-ir-148", CS_ISO8859_9 },
{ "ISO_8859-9", CS_ISO8859_9 },
{ "latin5", CS_ISO8859_9 },
{ "l5", CS_ISO8859_9 },
{ "csISOLatin5", CS_ISO8859_9 },
{ "ISO-8859-10", CS_ISO8859_10 },
{ "ISO8859-10", CS_ISO8859_10 }, /* WILD */
{ "iso-ir-157", CS_ISO8859_10 },
{ "l6", CS_ISO8859_10 },
{ "ISO_8859-10:1992", CS_ISO8859_10 },
{ "csISOLatin6", CS_ISO8859_10 },
{ "latin6", CS_ISO8859_10 },
{ "TIS-620", CS_ISO8859_11 },
{ "ISO-8859-13", CS_ISO8859_13 },
{ "ISO8859-13", CS_ISO8859_13 }, /* WILD */
{ "ISO-8859-14", CS_ISO8859_14 },
{ "ISO8859-14", CS_ISO8859_14 }, /* WILD */
{ "iso-ir-199", CS_ISO8859_14 },
{ "ISO_8859-14:1998", CS_ISO8859_14 },
{ "ISO_8859-14", CS_ISO8859_14 },
{ "latin8", CS_ISO8859_14 },
{ "iso-celtic", CS_ISO8859_14 },
{ "l8", CS_ISO8859_14 },
{ "ISO-8859-15", CS_ISO8859_15 },
{ "ISO8859-15", CS_ISO8859_15 }, /* WILD */
{ "ISO_8859-15", CS_ISO8859_15 },
{ "Latin-9", CS_ISO8859_15 },
{ "ISO-8859-16", CS_ISO8859_16 },
{ "ISO8859-16", CS_ISO8859_16 }, /* WILD */
{ "iso-ir-226", CS_ISO8859_16 },
{ "ISO_8859-16", CS_ISO8859_16 },
{ "ISO_8859-16:2001", CS_ISO8859_16 },
{ "latin10", CS_ISO8859_16 },
{ "l10", CS_ISO8859_16 },
{ "IBM437", CS_CP437 },
{ "cp437", CS_CP437 },
{ "437", CS_CP437 },
{ "csPC8CodePage437", CS_CP437 },
{ "IBM850", CS_CP850 },
{ "cp850", CS_CP850 },
{ "850", CS_CP850 },
{ "csPC850Multilingual", CS_CP850 },
{ "IBM866", CS_CP866 },
{ "cp866", CS_CP866 },
{ "866", CS_CP866 },
{ "csIBM866", CS_CP866 },
{ "windows-1250", CS_CP1250 },
{ "win-1250", CS_CP1250 }, /* WILD */
{ "windows-1251", CS_CP1251 },
{ "win-1251", CS_CP1251 }, /* WILD */
{ "windows-1252", CS_CP1252 },
{ "win-1252", CS_CP1252 }, /* WILD */
{ "windows-1253", CS_CP1253 },
{ "win-1253", CS_CP1253 }, /* WILD */
{ "windows-1254", CS_CP1254 },
{ "win-1254", CS_CP1254 }, /* WILD */
{ "windows-1255", CS_CP1255 },
{ "win-1255", CS_CP1255 }, /* WILD */
{ "windows-1256", CS_CP1256 },
{ "win-1256", CS_CP1256 }, /* WILD */
{ "windows-1257", CS_CP1257 },
{ "win-1257", CS_CP1257 }, /* WILD */
{ "windows-1258", CS_CP1258 },
{ "win-1258", CS_CP1258 }, /* WILD */
{ "KOI8-R", CS_KOI8_R },
{ "csKOI8R", CS_KOI8_R },
{ "KOI8-U", CS_KOI8_U },
{ "KOI8-RU", CS_KOI8_RU }, /* WILD */
{ "JIS_X0201", CS_JISX0201 },
{ "X0201", CS_JISX0201 },
{ "csHalfWidthKatakana", CS_JISX0201 },
{ "macintosh", CS_MAC_ROMAN_OLD },
{ "mac", CS_MAC_ROMAN_OLD },
{ "csMacintosh", CS_MAC_ROMAN_OLD },
{ "VISCII", CS_VISCII },
{ "csVISCII", CS_VISCII },
{ "hp-roman8", CS_HP_ROMAN8 },
{ "roman8", CS_HP_ROMAN8 },
{ "r8", CS_HP_ROMAN8 },
{ "csHPRoman8", CS_HP_ROMAN8 },
{ "DEC-MCS", CS_DEC_MCS },
{ "dec", CS_DEC_MCS },
{ "csDECMCS", CS_DEC_MCS },
{ "UTF-8", CS_UTF8 },
{ "UTF-7", CS_UTF7 },
{ "UNICODE-1-1-UTF-7", CS_UTF7 },
{ "csUnicode11UTF7", CS_UTF7 },
/*
* Quite why the EUC-CN encoding is known to MIME by the name
* of its underlying character set, I'm not entirely sure, but
* it is. Shrug.
*/
{ "GB2312", CS_EUC_CN },
{ "csGB2312", CS_EUC_CN },
{ "EUC-KR", CS_EUC_KR },
{ "csEUCKR", CS_EUC_KR },
{ "EUC-JP", CS_EUC_JP },
{ "csEUCPkdFmtJapanese", CS_EUC_JP },
{ "Extended_UNIX_Code_Packed_Format_for_Japanese", CS_EUC_JP },
{ "ISO-2022-JP", CS_ISO2022_JP },
{ "csISO2022JP", CS_ISO2022_JP },
{ "ISO-2022-KR", CS_ISO2022_KR },
{ "csISO2022KR", CS_ISO2022_KR },
{ "Big5", CS_BIG5 },
{ "csBig5", CS_BIG5 },
{ "Big-5", CS_BIG5 }, /* WILD */
{ "ChineseBig5", CS_BIG5 }, /* WILD */
{ "Shift_JIS", CS_SHIFT_JIS },
{ "MS_Kanji", CS_SHIFT_JIS },
{ "csShiftJIS", CS_SHIFT_JIS },
{ "HZ-GB-2312", CS_HZ },
{ "UTF-16BE", CS_UTF16BE },
{ "UTF-16LE", CS_UTF16LE },
{ "UTF-16", CS_UTF16 },
/*
* This bit is fiddly and possibly technically incorrect; but
* rumour has it that the KSC 5601 encoding is a subset of
* Microsoft CP949, and that MS products tend to announce CP949
* as KSC 5601 in much the same way they seem willing to
* announce CP1252 as its subset ISO 8859-1. So I cheat
* shamelessly here by letting KSC 5601 map to CP949.
*/
{ "KS_C_5601-1987", CS_CP949 },
{ "iso-ir-149", CS_CP949 },
{ "KS_C_5601-1989", CS_CP949 },
{ "KSC_5601", CS_CP949 },
{ "korean", CS_CP949 },
{ "csKSC56011987", CS_CP949 },
{ "KSC5601", CS_CP949 }, /* WILD */
#if 0
{ "ISO-2022-JP-2", CS_ISO2022_JP_2 },
{ "csISO2022JP2", CS_ISO2022_JP_2 },
#endif
};
const char *charset_to_mimeenc(int charset)
{
int i;
for (i = 0; i < (int)lenof(mimeencs); i++)
if (charset == mimeencs[i].charset)
return mimeencs[i].name;
return NULL; /* not found */
}
int charset_from_mimeenc(const char *name)
{
int i;
for (i = 0; i < (int)lenof(mimeencs); i++) {
const char *p, *q;
p = name;
q = mimeencs[i].name;
while (*p || *q) {
if (tolower(*p) != tolower(*q))
break;
p++; q++;
}
if (!*p && !*q)
return mimeencs[i].charset;
}
return CS_NONE; /* not found */
}