[thirdparty/glibc.git] / iconvdata / cns11643.h

/* Access functions for CNS 11643 handling.
   Copyright (C) 1998-2024 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <stdint.h>


/* Table for CNS 11643, plane 1 to UCS4 conversion.  */
extern const uint16_t __cns11643l1_to_ucs4_tab[];
/* Table for CNS 11643, plane 2 to UCS4 conversion.  */
extern const uint16_t __cns11643l2_to_ucs4_tab[];
/* Table for CNS 11643, plane 3 to UCS4 conversion.  */
extern const uint32_t __cns11643l3_to_ucs4_tab[];
/* Table for CNS 11643, plane 4 to UCS4 conversion.  */
extern const uint32_t __cns11643l4_to_ucs4_tab[];
/* Table for CNS 11643, plane 5 to UCS4 conversion.  */
extern const uint32_t __cns11643l5_to_ucs4_tab[];
/* Table for CNS 11643, plane 6 to UCS4 conversion.  */
extern const uint32_t __cns11643l6_to_ucs4_tab[];
/* Table for CNS 11643, plane 7 to UCS4 conversion.  */
extern const uint32_t __cns11643l7_to_ucs4_tab[];
/* Table for CNS 11643, plane 15 (old) to UCS4 conversion.  */
extern const uint32_t __cns11643l15_to_ucs4_tab[];


static inline uint32_t
__attribute ((always_inline))
cns11643_to_ucs4 (const unsigned char **s, size_t avail, unsigned char offset)
{
  unsigned char ch = *(*s);
  unsigned char ch2;
  unsigned char ch3;
  uint32_t result;
  int idx;

  if (ch < offset || (ch - offset) <= 0x20 || (ch - offset) > 0x30)
    return __UNKNOWN_10646_CHAR;

  if (avail < 3)
    return 0;

  ch2 = (*s)[1];
  if ((ch2 - offset) <= 0x20 || (ch2 - offset) >= 0x7f)
    return __UNKNOWN_10646_CHAR;

  ch3 = (*s)[2];
  if ((ch3 - offset) <= 0x20 || (ch3 - offset) >= 0x7f)
    return __UNKNOWN_10646_CHAR;

  idx = (ch2 - 0x21 - offset) * 94 + (ch3 - 0x21 - offset);

  switch (ch - 0x20 - offset)
    {
    case 1:
      if (idx > 0x21f2)
	return __UNKNOWN_10646_CHAR;
      result = __cns11643l1_to_ucs4_tab[idx];
      break;
    case 2:
      if (idx > 0x1de1)
	return __UNKNOWN_10646_CHAR;
      result = __cns11643l2_to_ucs4_tab[idx];
      break;
    case 3:
      if (idx > 0x19bd)
	return __UNKNOWN_10646_CHAR;
      result = __cns11643l3_to_ucs4_tab[idx];
      break;
    case 4:
      if (idx > 0x1c81)
	return __UNKNOWN_10646_CHAR;
      result = __cns11643l4_to_ucs4_tab[idx];
      break;
    case 5:
      if (idx > 0x219a)
	return __UNKNOWN_10646_CHAR;
      result = __cns11643l5_to_ucs4_tab[idx];
      break;
    case 6:
      if (idx > 0x18f3)
	return __UNKNOWN_10646_CHAR;
      result = __cns11643l6_to_ucs4_tab[idx];
      break;
    case 7:
      if (idx > 0x198a)
	return __UNKNOWN_10646_CHAR;
      result = __cns11643l7_to_ucs4_tab[idx];
      break;
    case 15:
      if (idx > 0x1c00)
	return __UNKNOWN_10646_CHAR;
      result = __cns11643l15_to_ucs4_tab[idx];
      break;
    default:
      return __UNKNOWN_10646_CHAR;
    }

  if (result != L'\0')
    (*s) += 3;
  else
    result = __UNKNOWN_10646_CHAR;

  return result;
}


/* Tables for the UCS4 -> CNS conversion.  */
extern const char __cns11643l1_from_ucs4_tab1[][2];
extern const char __cns11643l1_from_ucs4_tab2[][2];
extern const char __cns11643l1_from_ucs4_tab3[][2];
extern const char __cns11643l1_from_ucs4_tab4[][2];
extern const char __cns11643l1_from_ucs4_tab5[][2];
extern const char __cns11643l1_from_ucs4_tab6[][2];
extern const char __cns11643l1_from_ucs4_tab7[][2];
extern const char __cns11643l1_from_ucs4_tab8[][2];
extern const char __cns11643l1_from_ucs4_tab9[][2];
extern const char __cns11643l1_from_ucs4_tab10[][2];
extern const char __cns11643l1_from_ucs4_tab11[][2];
extern const char __cns11643l1_from_ucs4_tab12[][2];
extern const char __cns11643l1_from_ucs4_tab13[][2];
extern const char __cns11643l1_from_ucs4_tab14[][2];
extern const char __cns11643_from_ucs4p0_tab[][3];
extern const char __cns11643_from_ucs4p2_tab[][3];
extern const char __cns11643_from_ucs4p2c_tab[][3];


static inline size_t
__attribute ((always_inline))
ucs4_to_cns11643 (uint32_t wch, unsigned char *s, size_t avail)
{
  unsigned int ch = (unsigned int) wch;
  char buf[2];
  const char *cp = buf;
  size_t needed = 2;

  switch (ch)
    {
    case 0xa7 ... 0xf7:
      cp = __cns11643l1_from_ucs4_tab1[ch - 0xa7];
      break;
    case 0x2c7 ... 0x2d9:
      cp = __cns11643l1_from_ucs4_tab2[ch - 0x2c7];
      break;
    case 0x391 ... 0x3c9:
      cp = __cns11643l1_from_ucs4_tab3[ch - 0x391];
      break;
    case 0x2013 ... 0x203e:
      cp = __cns11643l1_from_ucs4_tab4[ch - 0x2013];
      break;
    case 0x2103:
      cp = "\x22\x6a";
      break;
    case 0x2105:
      cp = "\x22\x22";
      break;
    case 0x2109:
      cp = "\x22\x6b";
      break;
    case 0x2160 ... 0x2169:
      buf[0] = '\x24';
      buf[1] = '\x2b' + (ch - 0x2160);
      break;
    case 0x2170 ... 0x2179:
      buf[0] = '\x26';
      buf[1] = '\x35' + (ch - 0x2170);
      break;
    case 0x2190 ... 0x2199:
      cp = __cns11643l1_from_ucs4_tab5[ch - 0x2190];
      break;
    case 0x2215 ... 0x2267:
      cp = __cns11643l1_from_ucs4_tab6[ch - 0x2215];
      break;
    case 0x22a5:
      cp = "\x22\x47";
      break;
    case 0x22bf:
      cp = "\x22\x4a";
      break;
    case 0x2400 ... 0x2421:
      cp = __cns11643l1_from_ucs4_tab7[ch - 0x2400];
      break;
    case 0x2460 ... 0x247d:
      cp = __cns11643l1_from_ucs4_tab8[ch - 0x2460];
      break;
    case 0x2500 ... 0x2642:
      cp = __cns11643l1_from_ucs4_tab9[ch - 0x2500];
      break;
    case 0x3000 ... 0x3029:
      cp = __cns11643l1_from_ucs4_tab10[ch - 0x3000];
      break;
    case 0x30fb:
      cp = "\x21\x26";
      break;
    case 0x3105 ... 0x3129:
      buf[0] = '\x25';
      buf[1] = '\x47' + (ch - 0x3105);
      break;
    case 0x32a3:
      cp = "\x22\x21";
      break;
    case 0x338e ... 0x33d5:
      cp = __cns11643l1_from_ucs4_tab11[ch - 0x338e];
      break;
    case 0x4e00 ... 0x9f9c:
      cp = __cns11643l1_from_ucs4_tab12[ch - 0x4e00];
      if (cp[0] != '\0')
	break;
      /* Let's try the other planes.  */
      /* Fall through.  */
    case 0x3400 ... 0x4dff:
    case 0x9f9d ... 0x9fa5:
      /* Let's try the other planes.  */
      needed = 3;
      cp = __cns11643_from_ucs4p0_tab[ch - 0x3400];
      break;
    case 0xfa28:
      needed = 3;
      cp = "\x0f\x58\x4c";
      break;
    case 0xfe30 ... 0xfe6b:
      cp = __cns11643l1_from_ucs4_tab13[ch - 0xfe30];
      break;
    case 0xff01 ... 0xff5d:
      cp = __cns11643l1_from_ucs4_tab14[ch - 0xff01];
      break;
    case 0xffe0:
      cp = "\x22\x66";
      break;
    case 0xffe1:
      cp = "\x22\x67";
      break;
    case 0xffe5:
      cp = "\x22\x64";
      break;
    case 0x20000 ... 0x2a6d6:
      needed = 3;
      cp = __cns11643_from_ucs4p2_tab[ch - 0x20000];
      break;
    case 0x2f800 ... 0x2fa1d:
      needed = 3;
      cp = __cns11643_from_ucs4p2c_tab[ch - 0x2f800];
      break;
    default:
      return __UNKNOWN_10646_CHAR;
    }

  if (cp[0] == '\0')
    return __UNKNOWN_10646_CHAR;

  if (avail < needed)
    return 0;

  s[0] = cp[0];
  s[1] = cp[1];
  if (needed == 3)
    s[2] = cp[2];

  return needed;
}
Commit	Line	Data
289ac9dd	1	/* Access functions for CNS 11643 handling.
dff8da6b	2	Copyright (C) 1998-2024 Free Software Foundation, Inc.
2b474353	3	This file is part of the GNU C Library.
2b474353 UD	4
2b474353 UD	5	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
2b474353 UD	9
	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2	13	Lesser General Public License for more details.
2b474353	14
41bdb6e2	15	You should have received a copy of the GNU Lesser General Public
59ba27a6	16	License along with the GNU C Library; if not, see
5a82c748	17	<https://www.gnu.org/licenses/>. */
2b474353 UD	18
	19	#include <stdint.h>
	20
289ac9dd	21
755104ed UD	22	/* Table for CNS 11643, plane 1 to UCS4 conversion. */
755104ed UD	23	extern const uint16_t __cns11643l1_to_ucs4_tab[];
2b474353	24	/* Table for CNS 11643, plane 2 to UCS4 conversion. */
8619129f	25	extern const uint16_t __cns11643l2_to_ucs4_tab[];
289ac9dd UD	26	/* Table for CNS 11643, plane 3 to UCS4 conversion. */
	27	extern const uint32_t __cns11643l3_to_ucs4_tab[];
	28	/* Table for CNS 11643, plane 4 to UCS4 conversion. */
	29	extern const uint32_t __cns11643l4_to_ucs4_tab[];
	30	/* Table for CNS 11643, plane 5 to UCS4 conversion. */
	31	extern const uint32_t __cns11643l5_to_ucs4_tab[];
	32	/* Table for CNS 11643, plane 6 to UCS4 conversion. */
	33	extern const uint32_t __cns11643l6_to_ucs4_tab[];
	34	/* Table for CNS 11643, plane 7 to UCS4 conversion. */
	35	extern const uint32_t __cns11643l7_to_ucs4_tab[];
	36	/* Table for CNS 11643, plane 15 (old) to UCS4 conversion. */
	37	extern const uint32_t __cns11643l15_to_ucs4_tab[];
2b474353 UD	38
2b474353 UD	39
9b26f5c4	40	static inline uint32_t
dd9423a6	41	__attribute ((always_inline))
085a4412	42	cns11643_to_ucs4 (const unsigned char **s, size_t avail, unsigned char offset)
2b474353 UD	43	{
	44	unsigned char ch = (s);
	45	unsigned char ch2;
	46	unsigned char ch3;
9b26f5c4	47	uint32_t result;
2b474353 UD	48	int idx;
	49
	50	if (ch < offset \|\| (ch - offset) <= 0x20 \|\| (ch - offset) > 0x30)
d64b6ad0	51	return __UNKNOWN_10646_CHAR;
2b474353 UD	52
	53	if (avail < 3)
	54	return 0;
	55
	56	ch2 = (*s)[1];
	57	if ((ch2 - offset) <= 0x20 \|\| (ch2 - offset) >= 0x7f)
d64b6ad0	58	return __UNKNOWN_10646_CHAR;
2b474353 UD	59
	60	ch3 = (*s)[2];
	61	if ((ch3 - offset) <= 0x20 \|\| (ch3 - offset) >= 0x7f)
d64b6ad0	62	return __UNKNOWN_10646_CHAR;
2b474353 UD	63
	64	idx = (ch2 - 0x21 - offset) * 94 + (ch3 - 0x21 - offset);
	65
289ac9dd	66	switch (ch - 0x20 - offset)
2b474353	67	{
289ac9dd	68	case 1:
b79f74cd	69	if (idx > 0x21f2)
d64b6ad0	70	return __UNKNOWN_10646_CHAR;
8619129f	71	result = __cns11643l1_to_ucs4_tab[idx];
289ac9dd UD	72	break;
289ac9dd UD	73	case 2:
2b474353	74	if (idx > 0x1de1)
d64b6ad0	75	return __UNKNOWN_10646_CHAR;
8619129f	76	result = __cns11643l2_to_ucs4_tab[idx];
289ac9dd UD	77	break;
289ac9dd UD	78	case 3:
2b474353	79	if (idx > 0x19bd)
d64b6ad0	80	return __UNKNOWN_10646_CHAR;
289ac9dd UD	81	result = __cns11643l3_to_ucs4_tab[idx];
	82	break;
	83	case 4:
	84	if (idx > 0x1c81)
	85	return __UNKNOWN_10646_CHAR;
	86	result = __cns11643l4_to_ucs4_tab[idx];
	87	break;
	88	case 5:
	89	if (idx > 0x219a)
	90	return __UNKNOWN_10646_CHAR;
	91	result = __cns11643l5_to_ucs4_tab[idx];
	92	break;
	93	case 6:
	94	if (idx > 0x18f3)
	95	return __UNKNOWN_10646_CHAR;
	96	result = __cns11643l6_to_ucs4_tab[idx];
	97	break;
	98	case 7:
	99	if (idx > 0x198a)
	100	return __UNKNOWN_10646_CHAR;
	101	result = __cns11643l7_to_ucs4_tab[idx];
	102	break;
	103	case 15:
	104	if (idx > 0x1c00)
	105	return __UNKNOWN_10646_CHAR;
	106	result = __cns11643l15_to_ucs4_tab[idx];
	107	break;
	108	default:
	109	return __UNKNOWN_10646_CHAR;
2b474353	110	}
2b474353 UD	111
	112	if (result != L'\0')
	113	(*s) += 3;
	114	else
d64b6ad0	115	result = __UNKNOWN_10646_CHAR;
2b474353 UD	116
	117	return result;
	118	}
	119
	120
	121	/* Tables for the UCS4 -> CNS conversion. */
8619129f UD	122	extern const char __cns11643l1_from_ucs4_tab1[][2];
	123	extern const char __cns11643l1_from_ucs4_tab2[][2];
	124	extern const char __cns11643l1_from_ucs4_tab3[][2];
	125	extern const char __cns11643l1_from_ucs4_tab4[][2];
	126	extern const char __cns11643l1_from_ucs4_tab5[][2];
	127	extern const char __cns11643l1_from_ucs4_tab6[][2];
	128	extern const char __cns11643l1_from_ucs4_tab7[][2];
	129	extern const char __cns11643l1_from_ucs4_tab8[][2];
	130	extern const char __cns11643l1_from_ucs4_tab9[][2];
	131	extern const char __cns11643l1_from_ucs4_tab10[][2];
	132	extern const char __cns11643l1_from_ucs4_tab11[][2];
	133	extern const char __cns11643l1_from_ucs4_tab12[][2];
	134	extern const char __cns11643l1_from_ucs4_tab13[][2];
	135	extern const char __cns11643l1_from_ucs4_tab14[][2];
289ac9dd UD	136	extern const char __cns11643_from_ucs4p0_tab[][3];
289ac9dd UD	137	extern const char __cns11643_from_ucs4p2_tab[][3];
93a568aa	138	extern const char __cns11643_from_ucs4p2c_tab[][3];
2b474353 UD	139
	140
	141	static inline size_t
dd9423a6	142	__attribute ((always_inline))
085a4412	143	ucs4_to_cns11643 (uint32_t wch, unsigned char *s, size_t avail)
2b474353 UD	144	{
	145	unsigned int ch = (unsigned int) wch;
	146	char buf[2];
8619129f	147	const char *cp = buf;
8c0b7170	148	size_t needed = 2;
2b474353	149
8619129f	150	switch (ch)
2b474353	151	{
8619129f UD	152	case 0xa7 ... 0xf7:
	153	cp = __cns11643l1_from_ucs4_tab1[ch - 0xa7];
	154	break;
	155	case 0x2c7 ... 0x2d9:
	156	cp = __cns11643l1_from_ucs4_tab2[ch - 0x2c7];
	157	break;
	158	case 0x391 ... 0x3c9:
	159	cp = __cns11643l1_from_ucs4_tab3[ch - 0x391];
	160	break;
	161	case 0x2013 ... 0x203e:
	162	cp = __cns11643l1_from_ucs4_tab4[ch - 0x2013];
	163	break;
	164	case 0x2103:
	165	cp = "\x22\x6a";
	166	break;
	167	case 0x2105:
	168	cp = "\x22\x22";
	169	break;
	170	case 0x2109:
	171	cp = "\x22\x6b";
	172	break;
9b26f5c4	173	case 0x2160 ... 0x2169:
2b474353 UD	174	buf[0] = '\x24';
2b474353 UD	175	buf[1] = '\x2b' + (ch - 0x2160);
8619129f UD	176	break;
8619129f UD	177	case 0x2170 ... 0x2179:
2b474353 UD	178	buf[0] = '\x26';
2b474353 UD	179	buf[1] = '\x35' + (ch - 0x2170);
8619129f UD	180	break;
	181	case 0x2190 ... 0x2199:
	182	cp = __cns11643l1_from_ucs4_tab5[ch - 0x2190];
	183	break;
	184	case 0x2215 ... 0x2267:
	185	cp = __cns11643l1_from_ucs4_tab6[ch - 0x2215];
	186	break;
	187	case 0x22a5:
	188	cp = "\x22\x47";
	189	break;
	190	case 0x22bf:
	191	cp = "\x22\x4a";
	192	break;
	193	case 0x2400 ... 0x2421:
	194	cp = __cns11643l1_from_ucs4_tab7[ch - 0x2400];
	195	break;
	196	case 0x2460 ... 0x247d:
	197	cp = __cns11643l1_from_ucs4_tab8[ch - 0x2460];
	198	break;
	199	case 0x2500 ... 0x2642:
	200	cp = __cns11643l1_from_ucs4_tab9[ch - 0x2500];
9b26f5c4	201	break;
8619129f UD	202	case 0x3000 ... 0x3029:
	203	cp = __cns11643l1_from_ucs4_tab10[ch - 0x3000];
	204	break;
	205	case 0x30fb:
	206	cp = "\x21\x26";
	207	break;
	208	case 0x3105 ... 0x3129:
2b474353	209	buf[0] = '\x25';
b79f74cd	210	buf[1] = '\x47' + (ch - 0x3105);
8619129f UD	211	break;
	212	case 0x32a3:
	213	cp = "\x22\x21";
	214	break;
	215	case 0x338e ... 0x33d5:
	216	cp = __cns11643l1_from_ucs4_tab11[ch - 0x338e];
	217	break;
	218	case 0x4e00 ... 0x9f9c:
	219	cp = __cns11643l1_from_ucs4_tab12[ch - 0x4e00];
b79f74cd UD	220	if (cp[0] != '\0')
b79f74cd UD	221	break;
10756268 JM	222	/* Let's try the other planes. */
10756268 JM	223	/* Fall through. */
289ac9dd	224	case 0x3400 ... 0x4dff:
b79f74cd UD	225	case 0x9f9d ... 0x9fa5:
	226	/* Let's try the other planes. */
	227	needed = 3;
289ac9dd	228	cp = __cns11643_from_ucs4p0_tab[ch - 0x3400];
8619129f	229	break;
93a568aa UD	230	case 0xfa28:
	231	needed = 3;
	232	cp = "\x0f\x58\x4c";
	233	break;
8619129f UD	234	case 0xfe30 ... 0xfe6b:
	235	cp = __cns11643l1_from_ucs4_tab13[ch - 0xfe30];
	236	break;
	237	case 0xff01 ... 0xff5d:
	238	cp = __cns11643l1_from_ucs4_tab14[ch - 0xff01];
	239	break;
	240	case 0xffe0:
	241	cp = "\x22\x66";
	242	break;
	243	case 0xffe1:
	244	cp = "\x22\x67";
	245	break;
	246	case 0xffe5:
	247	cp = "\x22\x64";
	248	break;
289ac9dd UD	249	case 0x20000 ... 0x2a6d6:
	250	needed = 3;
	251	cp = __cns11643_from_ucs4p2_tab[ch - 0x20000];
	252	break;
93a568aa UD	253	case 0x2f800 ... 0x2fa1d:
	254	needed = 3;
	255	cp = __cns11643_from_ucs4p2c_tab[ch - 0x2f800];
	256	break;
8619129f	257	default:
d64b6ad0	258	return __UNKNOWN_10646_CHAR;
2b474353	259	}
2b474353 UD	260
2b474353 UD	261	if (cp[0] == '\0')
d64b6ad0	262	return __UNKNOWN_10646_CHAR;
2b474353 UD	263
	264	if (avail < needed)
	265	return 0;
	266
	267	s[0] = cp[0];
	268	s[1] = cp[1];
	269	if (needed == 3)
	270	s[2] = cp[2];
	271
	272	return needed;
	273	}