utf8.h
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- /*
- * Program: UTF-8 routines
- *
- * Author: Mark Crispin
- * Networks and Distributed Computing
- * Computing & Communications
- * University of Washington
- * Administration Building, AG-44
- * Seattle, WA 98195
- * Internet: MRC@CAC.Washington.EDU
- *
- * Date: 11 June 1997
- * Last Edited: 15 September 1999
- *
- * Copyright 1999 by the University of Washington
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose and without fee is hereby granted, provided
- * that the above copyright notices appear in all copies and that both the
- * above copyright notices and this permission notice appear in supporting
- * documentation, and that the name of the University of Washington not be
- * used in advertising or publicity pertaining to distribution of the software
- * without specific, written prior permission. This software is made
- * available "as is", and
- * THE UNIVERSITY OF WASHINGTON DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
- * WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT LIMITATION ALL IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND IN
- * NO EVENT SHALL THE UNIVERSITY OF WASHINGTON BE LIABLE FOR ANY SPECIAL,
- * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
- * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, TORT
- * (INCLUDING NEGLIGENCE) OR STRICT LIABILITY, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- */
- /* UTF-8 size and conversion routines from UCS-2 values. This will need to
- * be changed if UTF-16 data (surrogate pairs) are ever an issue.
- */
- #define UTF8_SIZE(c) ((c & 0xff80) ? ((c & 0xf800) ? 3 : 2) : 1)
- #define UTF8_PUT(b,c) {
- if (c & 0xff80) { /* non-ASCII? */
- if (c & 0xf800) { /* three byte code */
- *b++ = 0xe0 | (c >> 12);
- *b++ = 0x80 | ((c >> 6) & 0x3f);
- }
- else *b++ = 0xc0 | ((c >> 6) & 0x3f);
- *b++ = 0x80 | (c & 0x3f);
- }
- else *b++ = c;
- }
- /* ISO-2022 engine states */
- #define I2S_CHAR 0 /* character */
- #define I2S_ESC 1 /* previous character was ESC */
- #define I2S_MUL 2 /* previous character was multi-byte code */
- #define I2S_INT 3 /* previous character was intermediate */
- /* ISO-2022 Gn selections */
- #define I2C_G0 0 /* G0 */
- #define I2C_G1 1 /* G1 */
- #define I2C_G2 2 /* G2 */
- #define I2C_G3 3 /* G3 */
- #define I2C_SG2 (2 << 2) /* single shift G2 */
- #define I2C_SG3 (3 << 2) /* single shift G2 */
- /* ISO-2022 octet definitions */
- #define I2C_ESC 0x1b /* ESCape */
- /* Intermediate character */
- #define I2C_STRUCTURE 0x20 /* announce code structure */
- #define I2C_C0 0x21 /* C0 */
- #define I2C_C1 0x22 /* C1 */
- #define I2C_CONTROL 0x23 /* single control function */
- #define I2C_MULTI 0x24 /* multi-byte character set */
- #define I2C_OTHER 0x25 /* other coding system */
- #define I2C_REVISED 0x26 /* revised registration */
- #define I2C_G0_94 0x28 /* G0 94-character set */
- #define I2C_G1_94 0x29 /* G1 94-character set */
- #define I2C_G2_94 0x2A /* G2 94-character set */
- #define I2C_G3_94 0x2B /* G3 94-character set */
- #define I2C_G0_96 0x2C /* (not in ISO-2022) G0 96-character set */
- #define I2C_G1_96 0x2D /* G1 96-character set */
- #define I2C_G2_96 0x2E /* G2 96-character set */
- #define I2C_G3_96 0x2F /* G3 96-character set */
- /* Locking shifts */
- #define I2C_SI 0x0f /* lock shift to G0 (Shift In) */
- #define I2C_SO 0x0e /* lock shift to G1 (Shift Out) */
- /* prefixed by ESC */
- #define I2C_LS2 0x6e /* lock shift to G2 */
- #define I2C_LS3 0x6f /* lock shift to G3 */
- #define I2C_LS1R 0x7e /* lock shift GR to G1 */
- #define I2C_LS2R 0x7d /* lock shift GR to G2 */
- #define I2C_LS3R 0x7c /* lock shift GR to G3 */
- /* Single shifts */
- #define I2C_SS2_ALT 0x8e /* single shift to G2 (SS2) */
- #define I2C_SS3_ALT 0x8f /* single shift to G3 (SS3) */
- #define I2C_SS2_ALT_7 0x19 /* single shift to G2 (SS2) */
- #define I2C_SS3_ALT_7 0x1d /* single shift to G3 (SS3) */
- /* prefixed by ESC */
- #define I2C_SS2 0x4e /* single shift to G2 (SS2) */
- #define I2C_SS3 0x4f /* single shift to G3 (SS3) */
- /* Types of character sets */
- #define I2CS_94 0x000 /* 94 character set */
- #define I2CS_96 0x100 /* 96 character set */
- #define I2CS_MUL 0x200 /* multi-byte */
- #define I2CS_94x94 (I2CS_MUL | I2CS_94)
- #define I2CS_96x96 (I2CS_MUL | I2CS_96)
- /* 94 character sets */
- /* British localized ASCII */
- #define I2CS_BRITISH (I2CS_94 | 0x41)
- /* ASCII */
- #define I2CS_ASCII (I2CS_94 | 0x42)
- /* some buggy software does this */
- #define I2CS_JIS_BUGROM (I2CS_94 | 0x48)
- /* JIS X 0201-1976 right half */
- #define I2CS_JIS_KANA (I2CS_94 | 0x49)
- /* JIS X 0201-1976 left half */
- #define I2CS_JIS_ROMAN (I2CS_94 | 0x4a)
- /* JIS X 0208-1978 */
- #define I2CS_JIS_OLD (I2CS_94x94 | 0x40)
- /* GB 2312 */
- #define I2CS_GB (I2CS_94x94 | 0x41)
- /* JIS X 0208-1983 */
- #define I2CS_JIS_NEW (I2CS_94x94 | 0x42)
- /* KSC 5601 */
- #define I2CS_KSC (I2CS_94x94 | 0x43)
- /* JIS X 0212-1990 */
- #define I2CS_JIS_EXT (I2CS_94x94 | 0x44)
- /* CNS 11643 plane 1 */
- #define I2CS_CNS1 (I2CS_94x94 | 0x47)
- /* CNS 11643 plane 2 */
- #define I2CS_CNS2 (I2CS_94x94 | 0x48)
- /* CNS 11643 plane 3 */
- #define I2CS_CNS3 (I2CS_94x94 | 0x49)
- /* CNS 11643 plane 4 */
- #define I2CS_CNS4 (I2CS_94x94 | 0x4a)
- /* CNS 11643 plane 5 */
- #define I2CS_CNS5 (I2CS_94x94 | 0x4b)
- /* CNS 11643 plane 6 */
- #define I2CS_CNS6 (I2CS_94x94 | 0x4c)
- /* CNS 11643 plane 7 */
- #define I2CS_CNS7 (I2CS_94x94 | 0x4d)
- /* 96 character sets */
- /* Latin-1 (Western Europe) */
- #define I2CS_ISO8859_1 (I2CS_96 | 0x41)
- /* Latin-2 (Czech, Slovak) */
- #define I2CS_ISO8859_2 (I2CS_96 | 0x42)
- /* Latin-3 (Dutch, Turkish) */
- #define I2CS_ISO8859_3 (I2CS_96 | 0x43)
- /* Latin-4 (Scandinavian) */
- #define I2CS_ISO8859_4 (I2CS_96 | 0x44)
- /* Greek */
- #define I2CS_ISO8859_7 (I2CS_96 | 0x46)
- /* Arabic */
- #define I2CS_ISO8859_6 (I2CS_96 | 0x47)
- /* Hebrew */
- #define I2CS_ISO8859_8 (I2CS_96 | 0x48)
- /* Cyrillic */
- #define I2CS_ISO8859_5 (I2CS_96 | 0x4c)
- /* Latin-5 (Finnish, Portuguese) */
- #define I2CS_ISO8859_9 (I2CS_96 | 0x4d)
- /* TIS 620 */
- #define I2CS_TIS620 (I2CS_96 | 0x54)
- /* Latin-6 (Northern Europe) */
- #define I2CS_ISO8859_10 (I2CS_96 | 0x56)
- /* Latin-7 (Baltic) */
- #define I2CS_ISO8859_13 (I2CS_96 | 0x59)
- /* Vietnamese */
- #define I2CS_VSCII (I2CS_96 | 0x5a)
- /* Latin-8 (Celtic) */
- #define I2CS_ISO8859_14 (I2CS_96 | 0x5c)
- /* Euro (6/2 may be incorrect) */
- #define I2CS_ISO8859_15 (I2CS_96 | 0x62)
- /* Miscellaneous ISO 2022 definitions */
- #define EUC_CS2 0x8e /* single shift CS2 */
- #define EUC_CS3 0x8f /* single shift CS3 */
- #define BITS7 0x7f /* 7-bit value mask */
- #define BIT8 0x80 /* 8th bit mask */
- /* UCS2 codepoints */
- #define UCS2_POUNDSTERLING 0x00a3
- #define UCS2_YEN 0x00a5
- #define UCS2_OVERLINE 0x203e
- #define UCS2_KATAKANA 0xff61
- #define BOGON 0xfffd
- /* hankaku katakana parameters */
- #define MIN_KANA_7 0x21
- #define MAX_KANA_7 0x5f
- #define KANA_7 (UCS2_KATAKANA - MIN_KANA_7)
- #define MIN_KANA_8 (MIN_KANA_7 | BIT8)
- #define MAX_KANA_8 (MAX_KANA_7 | BIT8)
- #define KANA_8 (UCS2_KATAKANA - MIN_KANA_8)
- /* Charset scripts */
- /* The term "script" is used here in a very loose sense, enough to make
- * purists cringe. Basically, the idea is to give the main program some
- * idea of how it should treat the characters of text in a charset with
- * respect to font, drawing routines, etc.
- *
- * In some cases, "script" is associated with a charset; in other cases,
- * it's more closely tied to a language.
- */
- #define SC_UNICODE 0x1 /* UNICODE */
- /* ISO 8859 scripts */
- #define SC_LATIN_1 0x10 /* Western Europe */
- #define SC_LATIN_2 0x20 /* Eastern Europe */
- #define SC_LATIN_3 0x40 /* Southern Europe */
- #define SC_LATIN_4 0x80 /* Northern Europe */
- #define SC_LATIN_5 0x100 /* Turkish */
- #define SC_LATIN_6 0x200 /* Nordic */
- #define SC_LATIN_7 0x400 /* Baltic */
- #define SC_LATIN_8 0x800 /* Celtic */
- #define SC_LATIN_9 0x1000 /* Euro */
- #define SC_LATIN_0 SC_LATIN_9 /* colloquial name for Latin-9 */
- #define SC_ARABIC 0x2000
- #define SC_CYRILLIC 0x4000
- #define SC_GREEK 0x8000
- #define SC_HEBREW 0x10000
- #define SC_THAI 0x20000
- #define SC_UKRANIAN 0x40000
- /* East Asian scripts */
- #define SC_CHINESE_SIMPLIFIED 0x100000
- #define SC_CHINESE_TRADITIONAL 0x200000
- #define SC_JAPANESE 0x400000
- #define SC_KOREAN 0x800000
- #define SC_VIETNAMESE 0x1000000
- /* Character set table support */
- typedef void (*cstext_t) (SIZEDTEXT *text,SIZEDTEXT *ret,void *tab);
- struct utf8_csent {
- char *name; /* charset name */
- cstext_t dsp; /* text conversion dispatch */
- void *tab; /* optional additional data */
- unsigned long script; /* script(s) implemented by this charset */
- char *preferred; /* preferred charset over this one */
- };
- struct utf8_eucparam {
- unsigned int base_ku : 8; /* base row */
- unsigned int base_ten : 8; /* base column */
- unsigned int max_ku : 8; /* maximum row */
- unsigned int max_ten : 8; /* maximum column */
- void *tab; /* conversion table */
- };
- /* UTF-7 engine states */
- #define U7_ASCII 0 /* ASCII character */
- #define U7_PLUS 1 /* plus seen */
- #define U7_UNICODE 2 /* Unicode characters */
- #define U7_MINUS 3 /* absorbed minus seen */
- /* Function prototypes */
- long utf8_text (SIZEDTEXT *text,char *charset,SIZEDTEXT *ret,long flags);
- void utf8_text_8859_1 (SIZEDTEXT *text,SIZEDTEXT *ret,void *tab);
- void utf8_text_1byte (SIZEDTEXT *text,SIZEDTEXT *ret,void *tab);
- void utf8_text_1byte8 (SIZEDTEXT *text,SIZEDTEXT *ret,void *tab);
- void utf8_text_euc (SIZEDTEXT *text,SIZEDTEXT *ret,void *tab);
- void utf8_text_dbyte (SIZEDTEXT *text,SIZEDTEXT *ret,void *tab);
- void utf8_text_dbyte2 (SIZEDTEXT *text,SIZEDTEXT *ret,void *tab);
- void utf8_text_sjis (SIZEDTEXT *text,SIZEDTEXT *ret,void *tab);
- void utf8_text_2022 (SIZEDTEXT *text,SIZEDTEXT *ret,void *tab);
- void utf8_text_utf7 (SIZEDTEXT *text,SIZEDTEXT *ret,void *tab);
- void utf8_searchpgm (SEARCHPGM *pgm,char *charset);
- void utf8_stringlist (STRINGLIST *st,char *charset);
- long utf8_mime2text (SIZEDTEXT *src,SIZEDTEXT *dst);
- unsigned char *mime2_token (unsigned char *s,unsigned char *se,
- unsigned char **t);
- unsigned char *mime2_text (unsigned char *s,unsigned char *se,
- unsigned char **t);
- long mime2_decode (unsigned char *e,unsigned char *t,unsigned char *te,
- SIZEDTEXT *txt);