1 /* $NetBSD: citrus_iso2022.c,v 1.18 2007/11/21 14:19:32 tnozaki Exp $ */
2 /* $DragonFly: src/lib/libc/citrus/modules/citrus_iso2022.c,v 1.2 2008/04/10 10:21:01 hasso Exp $ */
5 * Copyright (c)1999, 2002 Citrus Project,
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $Citrus: xpg4dl/FreeBSD/lib/libc/locale/iso2022.c,v 1.23 2001/06/21 01:51:44 yamt Exp $
32 #include <sys/types.h>
43 #include "citrus_namespace.h"
44 #include "citrus_types.h"
45 #include "citrus_module.h"
46 #include "citrus_ctype.h"
47 #include "citrus_stdenc.h"
48 #include "citrus_iso2022.h"
51 /* ----------------------------------------------------------------------
52 * private stuffs used by templates
58 * ASCII (ESC ( B) 00000000 00000000 00000000 0xxxxxxx
59 * iso-8859-1 (ESC , A) 00000000 00000000 00000000 1xxxxxxx
60 * 94 charset (ESC ( F) 0fffffff 00000000 00000000 0xxxxxxx
61 * 94 charset (ESC ( M F) 0fffffff 1mmmmmmm 00000000 0xxxxxxx
62 * 96 charset (ESC , F) 0fffffff 00000000 00000000 1xxxxxxx
63 * 96 charset (ESC , M F) 0fffffff 1mmmmmmm 00000000 1xxxxxxx
64 * 94x94 charset (ESC $ ( F) 0fffffff 00000000 0xxxxxxx 0xxxxxxx
65 * 96x96 charset (ESC $ , F) 0fffffff 00000000 0xxxxxxx 1xxxxxxx
66 * 94x94 charset (ESC & V ESC $ ( F)
67 * 0fffffff 1vvvvvvv 0xxxxxxx 0xxxxxxx
68 * 94x94x94 charset (ESC $ ( F) 0fffffff 0xxxxxxx 0xxxxxxx 0xxxxxxx
69 * 96x96x96 charset (ESC $ , F) 0fffffff 0xxxxxxx 0xxxxxxx 1xxxxxxx
70 * reserved for UCS4 co-existence (UCS4 is 31bit encoding thanks to mohta bit)
71 * 1xxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
78 #define CS94MULTI (2U)
79 #define CS96MULTI (3U)
86 static const _ISO2022Charset ascii = { CS94, 'B', '\0', '\0' };
87 static const _ISO2022Charset iso88591 = { CS96, 'A', '\0', '\0' };
91 /* need 3 bits to hold -1, 0, ..., 3 */
96 char ch[7]; /* longest escape sequence (ESC & V ESC $ ( F) */
99 #define _ISO2022STATE_FLAG_INITIALIZED 1
103 _ISO2022Charset *recommend[4];
104 size_t recommendsize[4];
105 _ISO2022Charset initg[4];
108 #define F_8BIT 0x0001
109 #define F_NOOLD 0x0002
110 #define F_SI 0x0010 /*0F*/
111 #define F_SO 0x0020 /*0E*/
112 #define F_LS0 0x0010 /*0F*/
113 #define F_LS1 0x0020 /*0E*/
114 #define F_LS2 0x0040 /*ESC n*/
115 #define F_LS3 0x0080 /*ESC o*/
116 #define F_LS1R 0x0100 /*ESC ~*/
117 #define F_LS2R 0x0200 /*ESC }*/
118 #define F_LS3R 0x0400 /*ESC |*/
119 #define F_SS2 0x0800 /*ESC N*/
120 #define F_SS3 0x1000 /*ESC O*/
121 #define F_SS2R 0x2000 /*8E*/
122 #define F_SS3R 0x4000 /*8F*/
123 } _ISO2022EncodingInfo;
125 _ISO2022EncodingInfo ei;
127 /* for future multi-locale facility */
128 _ISO2022State s_mblen;
129 _ISO2022State s_mbrlen;
130 _ISO2022State s_mbrtowc;
131 _ISO2022State s_mbtowc;
132 _ISO2022State s_mbsrtowcs;
133 _ISO2022State s_wcrtomb;
134 _ISO2022State s_wcsrtombs;
135 _ISO2022State s_wctomb;
139 #define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
140 #define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
142 #define _FUNCNAME(m) _citrus_ISO2022_##m
143 #define _ENCODING_INFO _ISO2022EncodingInfo
144 #define _CTYPE_INFO _ISO2022CTypeInfo
145 #define _ENCODING_STATE _ISO2022State
146 #define _ENCODING_MB_CUR_MAX(_ei_) MB_LEN_MAX
147 #define _ENCODING_IS_STATE_DEPENDENT 1
148 #define _STATE_NEEDS_EXPLICIT_INIT(_ps_) \
149 (!((_ps_)->flags & _ISO2022STATE_FLAG_INITIALIZED))
152 #define _ISO2022INVALID (wchar_t)-1
154 static __inline int isc0(__uint8_t x) { return ((x & 0x1f) == x); }
155 static __inline int isc1(__uint8_t x) { return (0x80 <= x && x <= 0x9f); }
156 static __inline int iscntl(__uint8_t x) { return (isc0(x) || isc1(x) || x == 0x7f); }
157 static __inline int is94(__uint8_t x) { return (0x21 <= x && x <= 0x7e); }
158 static __inline int is96(__uint8_t x) { return (0x20 <= x && x <= 0x7f); }
159 static __inline int isecma(__uint8_t x) { return (0x30 <= x && x <= 0x7f); }
160 static __inline int isinterm(__uint8_t x) { return (0x20 <= x && x <= 0x2f); }
161 static __inline int isthree(__uint8_t x) { return (0x60 <= x && x <= 0x6f); }
164 getcs(const char * __restrict p, _ISO2022Charset * __restrict cs)
167 _DIAGASSERT(p != NULL);
168 _DIAGASSERT(cs != NULL);
170 if (!strncmp(p, "94$", 3) && p[3] && !p[4]) {
171 cs->final = (u_char)(p[3] & 0xff);
174 cs->type = CS94MULTI;
175 } else if (!strncmp(p, "96$", 3) && p[3] && !p[4]) {
176 cs->final = (u_char)(p[3] & 0xff);
179 cs->type = CS96MULTI;
180 } else if (!strncmp(p, "94", 2) && p[2] && !p[3]) {
181 cs->final = (u_char)(p[2] & 0xff);
185 } else if (!strncmp(p, "96", 2) && p[2] && !p[3]) {
186 cs->final = (u_char )(p[2] & 0xff);
203 get_recommend(_ISO2022EncodingInfo * __restrict ei,
204 const char * __restrict token)
207 _ISO2022Charset cs, *p;
209 if (!strchr("0123", token[0]) || token[1] != '=')
212 if (getcs(&token[2], &cs) == 0)
214 else if (!strcmp(&token[2], "94")) {
215 cs.final = (u_char)(token[4]);
219 } else if (!strcmp(&token[2], "96")) {
220 cs.final = (u_char)(token[4]);
224 } else if (!strcmp(&token[2], "94$")) {
225 cs.final = (u_char)(token[5]);
229 } else if (!strcmp(&token[2], "96$")) {
230 cs.final = (u_char)(token[5]);
239 if (!ei->recommend[i]) {
240 ei->recommend[i] = malloc(sizeof(_ISO2022Charset));
242 p = realloc(ei->recommend[i],
243 sizeof(_ISO2022Charset) * (ei->recommendsize[i] + 1));
246 ei->recommend[i] = p;
248 if (!ei->recommend[i])
250 ei->recommendsize[i]++;
252 (ei->recommend[i] + (ei->recommendsize[i] - 1))->final = cs.final;
253 (ei->recommend[i] + (ei->recommendsize[i] - 1))->interm = cs.interm;
254 (ei->recommend[i] + (ei->recommendsize[i] - 1))->vers = cs.vers;
255 (ei->recommend[i] + (ei->recommendsize[i] - 1))->type = cs.type;
261 get_initg(_ISO2022EncodingInfo * __restrict ei,
262 const char * __restrict token)
266 if (strncmp("INIT", &token[0], 4) ||
267 !strchr("0123", token[4]) ||
271 if (getcs(&token[6], &cs) != 0)
274 ei->initg[token[4] - '0'].type = cs.type;
275 ei->initg[token[4] - '0'].final = cs.final;
276 ei->initg[token[4] - '0'].interm = cs.interm;
277 ei->initg[token[4] - '0'].vers = cs.vers;
283 get_max(_ISO2022EncodingInfo * __restrict ei,
284 const char * __restrict token)
286 if (!strcmp(token, "MAX1")) {
288 } else if (!strcmp(token, "MAX2")) {
290 } else if (!strcmp(token, "MAX3")) {
300 get_flags(_ISO2022EncodingInfo * __restrict ei,
301 const char * __restrict token)
310 { "NOOLD", F_NOOLD },
327 for (i = 0; tags[i].tag; i++) {
328 if (!strcmp(token, tags[i].tag)) {
329 ei->flags |= tags[i].flag;
339 _citrus_ISO2022_parse_variable(_ISO2022EncodingInfo * __restrict ei,
340 const void * __restrict var, size_t lenvar)
346 _DIAGASSERT(ei != NULL);
350 * parse VARIABLE section.
356 v = (const char *) var;
358 /* initialize structure */
360 for (i = 0; i < 4; i++) {
361 ei->recommend[i] = NULL;
362 ei->recommendsize[i] = 0;
367 while (*v == ' ' || *v == '\t')
372 while (*e && *e != ' ' && *e != '\t')
378 if (len>=sizeof(buf))
380 snprintf(buf, sizeof(buf), "%.*s", len, v);
382 if ((ret = get_recommend(ei, buf)) != _NOTMATCH)
384 else if ((ret = get_initg(ei, buf)) != _NOTMATCH)
386 else if ((ret = get_max(ei, buf)) != _NOTMATCH)
388 else if ((ret = get_flags(ei, buf)) != _NOTMATCH)
401 free(ei->recommend[0]);
402 free(ei->recommend[1]);
403 free(ei->recommend[2]);
404 free(ei->recommend[3]);
411 _citrus_ISO2022_init_state(_ISO2022EncodingInfo * __restrict ei,
412 _ISO2022State * __restrict s)
416 memset(s, 0, sizeof(*s));
418 s->gr = (ei->flags & F_8BIT) ? 1 : -1;
420 for (i = 0; i < 4; i++) {
421 if (ei->initg[i].final) {
422 s->g[i].type = ei->initg[i].type;
423 s->g[i].final = ei->initg[i].final;
424 s->g[i].interm = ei->initg[i].interm;
427 s->singlegl = s->singlegr = -1;
428 s->flags |= _ISO2022STATE_FLAG_INITIALIZED;
433 _citrus_ISO2022_pack_state(_ISO2022EncodingInfo * __restrict ei,
434 void * __restrict pspriv,
435 const _ISO2022State * __restrict s)
437 memcpy(pspriv, (const void *)s, sizeof(*s));
442 _citrus_ISO2022_unpack_state(_ISO2022EncodingInfo * __restrict ei,
443 _ISO2022State * __restrict s,
444 const void * __restrict pspriv)
446 memcpy((void *)s, pspriv, sizeof(*s));
451 _citrus_ISO2022_encoding_module_init(_ISO2022EncodingInfo * __restrict ei,
452 const void * __restrict var,
456 _DIAGASSERT(ei != NULL);
458 return _citrus_ISO2022_parse_variable(ei, var, lenvar);
463 _citrus_ISO2022_encoding_module_uninit(_ISO2022EncodingInfo *ei)
472 static const struct seqtable {
481 /* G0 94MULTI special */
482 { CS94MULTI, -1, 2, -1, -1, 3, { ESC, '$', OECMA }, },
483 /* G0 94MULTI special with version identification */
484 { CS94MULTI, -1, 5, -1, 2, 6, { ESC, '&', ECMA, ESC, '$', OECMA }, },
486 { CS94, 1, 2, -1, -1, 3, { ESC, CS94, ECMA, }, },
487 /* G? 94 with 2nd intermediate char */
488 { CS94, 1, 3, 2, -1, 4, { ESC, CS94, INTERM, ECMA, }, },
490 { CS96, 1, 2, -1, -1, 3, { ESC, CS96, ECMA, }, },
491 /* G? 96 with 2nd intermediate char */
492 { CS96, 1, 3, 2, -1, 4, { ESC, CS96, INTERM, ECMA, }, },
494 { CS94MULTI, 2, 3, -1, -1, 4, { ESC, '$', CS94, ECMA, }, },
496 { CS96MULTI, 2, 3, -1, -1, 4, { ESC, '$', CS96, ECMA, }, },
497 /* G? 94MULTI with version specification */
498 { CS94MULTI, 5, 6, -1, 2, 7, { ESC, '&', ECMA, ESC, '$', CS94, ECMA, }, },
500 { -1, -1, -1, -1, -1, 2, { ESC, 'n', }, },
501 { -1, -1, -1, -1, -1, 2, { ESC, 'o', }, },
503 { -1, -1, -1, -1, -1, 2, { ESC, '~', }, },
504 { -1, -1, -1, -1, -1, 2, { ESC, /*{*/ '}', }, },
505 { -1, -1, -1, -1, -1, 2, { ESC, '|', }, },
507 { -1, -1, -1, -1, -1, 2, { ESC, 'N', }, },
508 { -1, -1, -1, -1, -1, 2, { ESC, 'O', }, },
514 seqmatch(const char * __restrict s, size_t n,
515 const struct seqtable * __restrict sp)
519 _DIAGASSERT(s != NULL);
520 _DIAGASSERT(sp != NULL);
523 while (p - sp->chars < n && p - sp->chars < sp->len) {
530 if (*s && strchr("@AB", *s))
539 if (*s && strchr("()*+", *s))
544 if (*s && strchr(",-./", *s))
559 return p - sp->chars;
563 _ISO2022_sgetwchar(_ISO2022EncodingInfo * __restrict ei,
564 const char * __restrict string, size_t n,
565 const char ** __restrict result,
566 _ISO2022State * __restrict psenc)
570 const struct seqtable *sp;
574 _DIAGASSERT(ei != NULL);
575 _DIAGASSERT(string != NULL);
576 /* result may be NULL */
580 if (1 <= n && string[0] == '\017') {
586 if (1 <= n && string[0] == '\016') {
594 if (1 <= n && string[0] && strchr("\217\216", string[0])) {
595 psenc->singlegl = psenc->singlegr =
596 (string[0] - '\216') + 2;
602 /* eat the letter if this is not ESC */
603 if (1 <= n && string[0] != '\033')
606 /* look for a perfect match from escape sequences */
607 for (sp = &seqtable[0]; sp->len; sp++) {
608 nmatch = seqmatch(string, n, sp);
609 if (sp->len == nmatch && n >= sp->len)
616 if (sp->type != -1) {
623 i = string[sp->csoff] - '(';
627 i = string[sp->csoff] - ',';
630 return (_ISO2022INVALID);
633 psenc->g[i].type = sp->type;
634 psenc->g[i].final = '\0';
635 psenc->g[i].interm = '\0';
636 psenc->g[i].vers = '\0';
637 /* sp->finaloff must not be -1 */
638 if (sp->finaloff != -1)
639 psenc->g[i].final = string[sp->finaloff];
640 if (sp->intermoff != -1)
641 psenc->g[i].interm = string[sp->intermoff];
642 if (sp->versoff != -1)
643 psenc->g[i].vers = string[sp->versoff];
651 if (2 <= n && string[0] == '\033'
652 && string[1] && strchr("no", string[1])) {
653 psenc->gl = string[1] - 'n' + 2;
660 /* XXX: { for vi showmatch */
661 if (2 <= n && string[0] == '\033'
662 && string[1] && strchr("~}|", string[1])) {
663 psenc->gr = 3 - (string[1] - '|');
670 if (2 <= n && string[0] == '\033'
671 && string[1] && strchr("NO", string[1])) {
672 psenc->singlegl = (string[1] - 'N') + 2;
680 * if we've got an unknown escape sequence, eat the ESC at the
681 * head. otherwise, wait till full escape sequence comes.
683 for (sp = &seqtable[0]; sp->len; sp++) {
684 nmatch = seqmatch(string, n, sp);
689 * if we are in the middle of escape sequence,
690 * we still need to wait for more characters to come
696 return (_ISO2022INVALID);
699 if (nmatch == sp->len) {
700 /* this case should not happen */
710 /* no letter to eat */
714 return (_ISO2022INVALID);
717 /* normal chars. always eat C0/C1 as is. */
718 if (iscntl(*string & 0xff))
720 else if (*string & 0x80) {
721 cur = (psenc->singlegr == -1)
722 ? psenc->gr : psenc->singlegr;
724 cur = (psenc->singlegl == -1)
725 ? psenc->gl : psenc->singlegl;
730 wchar = *string++ & 0xff;
733 /* reset single shift state */
734 psenc->singlegr = psenc->singlegl = -1;
738 /* length error check */
739 switch (psenc->g[cur].type) {
742 if (!isthree(psenc->g[cur].final)) {
744 && (string[0] & 0x80) == (string[1] & 0x80))
748 && (string[0] & 0x80) == (string[1] & 0x80)
749 && (string[0] & 0x80) == (string[2] & 0x80))
753 /* we still need to wait for more characters to come */
756 return (_ISO2022INVALID);
763 /* we still need to wait for more characters to come */
766 return (_ISO2022INVALID);
770 switch (psenc->g[cur].type) {
772 if (!(is94(string[0] & 0x7f)))
775 if (!(is96(string[0] & 0x7f)))
779 if (!(is94(string[0] & 0x7f) && is94(string[1] & 0x7f)))
783 if (!(is96(string[0] & 0x7f) && is96(string[1] & 0x7f)))
788 /* extract the character. */
789 switch (psenc->g[cur].type) {
791 /* special case for ASCII. */
792 if (psenc->g[cur].final == 'B' && !psenc->g[cur].interm) {
797 wchar = psenc->g[cur].final;
798 wchar = (wchar << 8);
799 wchar |= (psenc->g[cur].interm ? (0x80 | psenc->g[cur].interm) : 0);
800 wchar = (wchar << 8);
801 wchar = (wchar << 8) | (*string++ & 0x7f);
804 /* special case for ISO-8859-1. */
805 if (psenc->g[cur].final == 'A' && !psenc->g[cur].interm) {
811 wchar = psenc->g[cur].final;
812 wchar = (wchar << 8);
813 wchar |= (psenc->g[cur].interm ? (0x80 | psenc->g[cur].interm) : 0);
814 wchar = (wchar << 8);
815 wchar = (wchar << 8) | (*string++ & 0x7f);
820 wchar = psenc->g[cur].final;
821 wchar = (wchar << 8);
822 if (isthree(psenc->g[cur].final))
823 wchar |= (*string++ & 0x7f);
824 wchar = (wchar << 8) | (*string++ & 0x7f);
825 wchar = (wchar << 8) | (*string++ & 0x7f);
826 if (psenc->g[cur].type == CS96MULTI)
833 /* reset single shift state */
834 psenc->singlegr = psenc->singlegl = -1;
841 _citrus_ISO2022_mbrtowc_priv(_ISO2022EncodingInfo * __restrict ei,
842 wchar_t * __restrict pwc,
843 const char ** __restrict s,
844 size_t n, _ISO2022State * __restrict psenc,
845 size_t * __restrict nresult)
848 const char *s0, *p, *result;
852 _DIAGASSERT(nresult != 0);
853 _DIAGASSERT(ei != NULL);
854 _DIAGASSERT(psenc != NULL);
855 _DIAGASSERT(s != NULL);
858 _citrus_ISO2022_init_state(ei, psenc);
859 *nresult = _ENCODING_IS_STATE_DEPENDENT;
864 chlenbak = psenc->chlen;
867 * if we have something in buffer, use that.
868 * otherwise, skip here
870 if (psenc->chlen < 0 || psenc->chlen > sizeof(psenc->ch)) {
872 _citrus_ISO2022_init_state(ei, psenc);
875 if (psenc->chlen == 0)
878 /* buffer is not empty */
880 while (psenc->chlen < sizeof(psenc->ch) && n >= 0) {
882 psenc->ch[psenc->chlen++] = *s0++;
886 wchar = _ISO2022_sgetwchar(ei, p, psenc->chlen - (p-psenc->ch),
889 if (wchar != _ISO2022INVALID) {
890 if (psenc->chlen > c)
891 memmove(psenc->ch, result, psenc->chlen - c);
892 if (psenc->chlen < c)
900 if ((result - p) == psenc->chlen)
901 /* complete shift sequence. */
909 /* escape sequence too long? */
913 wchar = _ISO2022_sgetwchar(ei, s0, n, &result, psenc);
914 if (wchar != _ISO2022INVALID) {
926 /* complete shift sequence. */
930 if (n < sizeof(psenc->ch)) {
931 memcpy(psenc->ch, s0 - c, n);
937 /* escape sequence too long? */
941 *nresult = (size_t)-1;
952 *nresult = c - chlenbak;
958 *nresult = (size_t)-2;
964 recommendation(_ISO2022EncodingInfo * __restrict ei,
965 _ISO2022Charset * __restrict cs)
968 _ISO2022Charset *recommend;
970 _DIAGASSERT(ei != NULL);
971 _DIAGASSERT(cs != NULL);
973 /* first, try a exact match. */
974 for (i = 0; i < 4; i++) {
975 recommend = ei->recommend[i];
976 for (j = 0; j < ei->recommendsize[i]; j++) {
977 if (cs->type != recommend[j].type)
979 if (cs->final != recommend[j].final)
981 if (cs->interm != recommend[j].interm)
988 /* then, try a wildcard match over final char. */
989 for (i = 0; i < 4; i++) {
990 recommend = ei->recommend[i];
991 for (j = 0; j < ei->recommendsize[i]; j++) {
992 if (cs->type != recommend[j].type)
994 if (cs->final && (cs->final != recommend[j].final))
996 if (cs->interm && (cs->interm != recommend[j].interm))
1003 /* there's no recommendation. make a guess. */
1004 if (ei->maxcharset == 0) {
1020 _ISO2022_sputwchar(_ISO2022EncodingInfo * __restrict ei, wchar_t wc,
1021 char * __restrict string, size_t n,
1022 char ** __restrict result,
1023 _ISO2022State * __restrict psenc,
1024 size_t * __restrict nresult)
1030 char tmp[MB_LEN_MAX];
1035 _DIAGASSERT(ei != NULL);
1036 _DIAGASSERT(string != NULL);
1037 /* result may be NULL */
1038 _DIAGASSERT(psenc != NULL);
1039 _DIAGASSERT(nresult != NULL);
1041 if (isc0(wc & 0xff)) {
1042 /* go back to INIT0 or ASCII on control chars */
1043 cs = ei->initg[0].final ? ei->initg[0] : ascii;
1044 } else if (isc1(wc & 0xff)) {
1045 /* go back to INIT1 or ISO-8859-1 on control chars */
1046 cs = ei->initg[1].final ? ei->initg[1] : iso88591;
1047 } else if (!(wc & ~0xff)) {
1049 /* special treatment for ISO-8859-1 */
1052 /* special treatment for ASCII */
1056 cs.final = (wc >> 24) & 0x7f;
1057 if ((wc >> 16) & 0x80)
1058 cs.interm = (wc >> 16) & 0x7f;
1062 cs.type = (wc & 0x00007f00) ? CS96MULTI : CS96;
1064 cs.type = (wc & 0x00007f00) ? CS94MULTI : CS94;
1066 target = recommendation(ei, &cs);
1068 bit8 = ei->flags & F_8BIT;
1070 /* designate the charset onto the target plane(G0/1/2/3). */
1071 if (psenc->g[target].type == cs.type
1072 && psenc->g[target].final == cs.final
1073 && psenc->g[target].interm == cs.interm)
1077 if (cs.type == CS94MULTI || cs.type == CS96MULTI)
1079 if (target == 0 && cs.type == CS94MULTI && strchr("@AB", cs.final)
1080 && !cs.interm && !(ei->flags & F_NOOLD))
1082 else if (cs.type == CS94 || cs.type == CS94MULTI)
1083 *p++ = "()*+"[target];
1085 *p++ = ",-./"[target];
1090 psenc->g[target].type = cs.type;
1091 psenc->g[target].final = cs.final;
1092 psenc->g[target].interm = cs.interm;
1095 /* invoke the plane onto GL or GR. */
1096 if (psenc->gl == target)
1098 if (bit8 && psenc->gr == target)
1101 if (target == 0 && (ei->flags & F_LS0)) {
1104 } else if (target == 1 && (ei->flags & F_LS1)) {
1107 } else if (target == 2 && (ei->flags & F_LS2)) {
1111 } else if (target == 3 && (ei->flags & F_LS3)) {
1115 } else if (bit8 && target == 1 && (ei->flags & F_LS1R)) {
1119 } else if (bit8 && target == 2 && (ei->flags & F_LS2R)) {
1124 } else if (bit8 && target == 3 && (ei->flags & F_LS3R)) {
1128 } else if (target == 2 && (ei->flags & F_SS2)) {
1131 psenc->singlegl = 2;
1132 } else if (target == 3 && (ei->flags & F_SS3)) {
1135 psenc->singlegl = 3;
1136 } else if (bit8 && target == 2 && (ei->flags & F_SS2R)) {
1139 psenc->singlegl = psenc->singlegr = 2;
1140 } else if (bit8 && target == 3 && (ei->flags & F_SS3R)) {
1143 psenc->singlegl = psenc->singlegr = 3;
1148 if (psenc->singlegl == target)
1150 else if (psenc->singlegr == target)
1152 else if (psenc->gl == target)
1154 else if ((ei->flags & F_8BIT) && psenc->gr == target)
1166 i = !iscntl(wc & 0xff) ?
1167 (isthree(cs.final) ? 3 : 2) : 1;
1171 *p++ = ((wc >> (i << 3)) & 0x7f) | mask;
1173 /* reset single shift state */
1174 psenc->singlegl = psenc->singlegr = -1;
1176 len = (size_t)(p - tmp);
1180 *nresult = (size_t)-1;
1184 *result = string + len;
1185 memcpy(string, tmp, len);
1191 *nresult = (size_t)-1;
1196 _citrus_ISO2022_put_state_reset(_ISO2022EncodingInfo * __restrict ei,
1197 char * __restrict s, size_t n,
1198 _ISO2022State * __restrict psenc,
1199 size_t * __restrict nresult)
1201 char buf[MB_LEN_MAX];
1206 _DIAGASSERT(ei != NULL);
1207 _DIAGASSERT(nresult != 0);
1208 _DIAGASSERT(s != NULL);
1210 /* XXX state will be modified after this operation... */
1211 ret = _ISO2022_sputwchar(ei, L'\0', buf, sizeof(buf), &result, psenc,
1218 if (sizeof(buf) < len || n < len-1) {
1219 /* XXX should recover state? */
1220 *nresult = (size_t)-1;
1224 memcpy(s, buf, len-1);
1230 _citrus_ISO2022_wcrtomb_priv(_ISO2022EncodingInfo * __restrict ei,
1231 char * __restrict s, size_t n, wchar_t wc,
1232 _ISO2022State * __restrict psenc,
1233 size_t * __restrict nresult)
1235 char buf[MB_LEN_MAX];
1240 _DIAGASSERT(ei != NULL);
1241 _DIAGASSERT(s != NULL);
1242 _DIAGASSERT(psenc != NULL);
1243 _DIAGASSERT(nresult != 0);
1245 /* XXX state will be modified after this operation... */
1246 ret = _ISO2022_sputwchar(ei, wc, buf, sizeof(buf), &result, psenc,
1253 if (sizeof(buf) < len || n < len) {
1254 /* XXX should recover state? */
1255 *nresult = (size_t)-1;
1259 memcpy(s, buf, len);
1266 _citrus_ISO2022_stdenc_wctocs(_ISO2022EncodingInfo * __restrict ei,
1267 _csid_t * __restrict csid,
1268 _index_t * __restrict idx, wchar_t wc)
1272 _DIAGASSERT(csid != NULL && idx != NULL);
1274 m = wc & 0x7FFF8080;
1275 nm = wc & 0x007F7F7F;
1276 if (m & 0x00800000) {
1281 if (nm & 0x007F0000) {
1284 } else if (nm & 0x00007F00) {
1289 *idx = (_index_t)nm;
1296 _citrus_ISO2022_stdenc_cstowc(_ISO2022EncodingInfo * __restrict ei,
1297 wchar_t * __restrict wc,
1298 _csid_t csid, _index_t idx)
1301 _DIAGASSERT(ei != NULL && wc != NULL);
1303 *wc = (wchar_t)(csid & 0x7F808080) | (wchar_t)idx;
1310 _citrus_ISO2022_stdenc_get_state_desc_generic(_ISO2022EncodingInfo * __restrict ei,
1311 _ISO2022State * __restrict psenc,
1312 int * __restrict rstate)
1315 if (psenc->chlen == 0) {
1316 /* XXX: it should distinguish initial and stable. */
1317 *rstate = _STDENC_SDGEN_STABLE;
1319 if (psenc->ch[0] == '\033')
1320 *rstate = _STDENC_SDGEN_INCOMPLETE_SHIFT;
1322 *rstate = _STDENC_SDGEN_INCOMPLETE_CHAR;
1328 /* ----------------------------------------------------------------------
1329 * public interface for ctype
1332 _CITRUS_CTYPE_DECLS(ISO2022);
1333 _CITRUS_CTYPE_DEF_OPS(ISO2022);
1335 #include "citrus_ctype_template.h"
1337 /* ----------------------------------------------------------------------
1338 * public interface for stdenc
1341 _CITRUS_STDENC_DECLS(ISO2022);
1342 _CITRUS_STDENC_DEF_OPS(ISO2022);
1344 #include "citrus_stdenc_template.h"