[thirdparty/glibc.git] / iconvdata / euc-tw.c

/* Mapping tables for EUC-TW handling.
   Copyright (C) 1998, 1999, 2000-2002, 2003, 2007
   Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.

   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
   <http://www.gnu.org/licenses/>.  */

#include <dlfcn.h>
#include <stdint.h>
#include <cns11643l1.h>
#include <cns11643.h>

/* Definitions used in the body of the `gconv' function.  */
#define CHARSET_NAME		"EUC-TW//"
#define FROM_LOOP		from_euc_tw
#define TO_LOOP			to_euc_tw
#define DEFINE_INIT		1
#define DEFINE_FINI		1
#define MIN_NEEDED_FROM		1
#define MAX_NEEDED_FROM		4
#define MIN_NEEDED_TO		4


/* First define the conversion function from EUC-TW to UCS4.  */
#define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
#define MAX_NEEDED_INPUT	MAX_NEEDED_FROM
#define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
#define LOOPFCT			FROM_LOOP
#define BODY \
  {									      \
    uint32_t ch = *inptr;						      \
    									      \
    if (ch <= 0x7f)							      \
      /* Plain ASCII.  */						      \
      ++inptr;								      \
    else if ((ch <= 0xa0 || ch > 0xfe) && ch != 0x8e)			      \
      {									      \
	/* This is illegal.  */						      \
	STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \
      }									      \
    else								      \
      {									      \
	/* Two or more byte character.  First test whether the next byte      \
	   is also available.  */					      \
	uint32_t ch2;							      \
									      \
	if (inptr + 1 >= inend)						      \
	  {								      \
	    /* The second byte is not available.  Store the intermediate      \
	       result.  */						      \
	    result = __GCONV_INCOMPLETE_INPUT;				      \
	    break;							      \
	  }								      \
									      \
	ch2 = *(inptr + 1);						      \
									      \
	/* All second bytes of a multibyte character must be >= 0xa1. */      \
	if (ch2 < 0xa1 || ch2 == 0xff)					      \
	  STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \
									      \
	if (ch == 0x8e)							      \
	  {								      \
	    /* This is code set 2: CNS 11643, planes 1 to 16.  */	      \
	    const unsigned char *endp = inptr + 1;			      \
									      \
	    ch = cns11643_to_ucs4 (&endp, inend - inptr - 1, 0x80);	      \
									      \
	    if (ch == 0)						      \
	      {								      \
		/* The third or fourth byte is not available.  Store	      \
		   the intermediate result.  */				      \
		result = __GCONV_INCOMPLETE_INPUT;			      \
		break;							      \
	      }								      \
									      \
	    if (ch == __UNKNOWN_10646_CHAR)				      \
	      /* Illegal input.  */					      \
	      STANDARD_FROM_LOOP_ERR_HANDLER (1);			      \
									      \
	    inptr += 4;							      \
	  }								      \
	else								      \
	  {								      \
	    /* This is code set 1: CNS 11643, plane 1.  */		      \
	    const unsigned char *endp = inptr;				      \
									      \
	    ch = cns11643l1_to_ucs4 (&endp, inend - inptr, 0x80);	      \
	    /* Please note that we need not test for the missing input	      \
	       characters here anymore.  */				      \
	    if (ch == __UNKNOWN_10646_CHAR)				      \
	      /* Illegal input.  */					      \
	      STANDARD_FROM_LOOP_ERR_HANDLER (2);			      \
									      \
	    inptr += 2;							      \
	  }								      \
      }									      \
									      \
    put32 (outptr, ch);							      \
    outptr += 4;							      \
  }
#define LOOP_NEED_FLAGS
#define ONEBYTE_BODY \
  {									      \
    if (c < 0x80)							      \
      return c;								      \
    else								      \
      return WEOF;							      \
  }
#include <iconv/loop.c>


/* Next, define the other direction.  */
#define MIN_NEEDED_INPUT	MIN_NEEDED_TO
#define MIN_NEEDED_OUTPUT	MIN_NEEDED_FROM
#define MAX_NEEDED_OUTPUT	MAX_NEEDED_FROM
#define LOOPFCT			TO_LOOP
#define BODY \
  {									      \
    uint32_t ch = get32 (inptr);					      \
									      \
    if (ch <= 0x7f)							      \
      /* It's plain ASCII.  */						      \
      *outptr++ = ch;							      \
    else								      \
      {									      \
	/* Try the CNS 11643 planes.  */				      \
	size_t found;							      \
									      \
	found = ucs4_to_cns11643l1 (ch, outptr, outend - outptr);	      \
	if (__builtin_expect (found, 1) == 0)				      \
	  {								      \
	    /* We ran out of space.  */					      \
	    result = __GCONV_FULL_OUTPUT;				      \
	    break;							      \
	  }								      \
	if (__builtin_expect (found, 1) != __UNKNOWN_10646_CHAR)	      \
	  {								      \
	    /* It's a CNS 11643, plane 1 character, adjust it for EUC-TW.  */ \
	    *outptr++ += 0x80;						      \
	    *outptr++ += 0x80;						      \
	  }								      \
	else								      \
	  {								      \
	    /* No CNS 11643, plane 1 character.  */			      \
									      \
	    found = ucs4_to_cns11643 (ch, outptr + 1, outend - outptr - 1);   \
	    if (__builtin_expect (found, 1) == 0)			      \
	      {								      \
		/* We ran out of space.  */				      \
		result = __GCONV_FULL_OUTPUT;				      \
		break;							      \
	      }								      \
	    if (__builtin_expect (found, 0) == __UNKNOWN_10646_CHAR)	      \
	      {								      \
		UNICODE_TAG_HANDLER (ch, 4);				      \
									      \
		/* Illegal character.  */				      \
		STANDARD_TO_LOOP_ERR_HANDLER (4);			      \
	      }								      \
									      \
	    /* It's a CNS 11643 character, adjust it for EUC-TW.  */	      \
	    *outptr++ = '\x8e';						      \
	    *outptr++ += 0xa0;						      \
	    *outptr++ += 0x80;						      \
	    *outptr++ += 0x80;						      \
	  }								      \
      }									      \
									      \
    inptr += 4;								      \
  }
#define LOOP_NEED_FLAGS
#include <iconv/loop.c>


/* Now define the toplevel functions.  */
#include <iconv/skeleton.c>
Commit	Line	Data
2b474353	1	/* Mapping tables for EUC-TW handling.
085a4412 UD	2	Copyright (C) 1998, 1999, 2000-2002, 2003, 2007
085a4412 UD	3	Free Software Foundation, Inc.
2b474353 UD	4	This file is part of the GNU C Library.
	5	Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
	6
	7	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	8	modify it under the terms of the GNU Lesser General Public
	9	License as published by the Free Software Foundation; either
	10	version 2.1 of the License, or (at your option) any later version.
2b474353 UD	11
	12	The GNU C Library is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2	15	Lesser General Public License for more details.
2b474353	16
41bdb6e2	17	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	18	License along with the GNU C Library; if not, see
59ba27a6 PE	19	<http://www.gnu.org/licenses/>. */
2b474353	20
55985355	21	#include <dlfcn.h>
2b474353	22	#include <stdint.h>
2b474353 UD	23	#include <cns11643l1.h>
	24	#include <cns11643.h>
	25
8619129f	26	/* Definitions used in the body of the `gconv' function. */
9b26f5c4	27	#define CHARSET_NAME "EUC-TW//"
8619129f UD	28	#define FROM_LOOP from_euc_tw
	29	#define TO_LOOP to_euc_tw
	30	#define DEFINE_INIT 1
	31	#define DEFINE_FINI 1
	32	#define MIN_NEEDED_FROM 1
	33	#define MAX_NEEDED_FROM 4
	34	#define MIN_NEEDED_TO 4
	35
	36
	37	/* First define the conversion function from EUC-TW to UCS4. */
	38	#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
	39	#define MAX_NEEDED_INPUT MAX_NEEDED_FROM
	40	#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
	41	#define LOOPFCT FROM_LOOP
	42	#define BODY \
	43	{ \
	44	uint32_t ch = *inptr; \
	45	\
	46	if (ch <= 0x7f) \
	47	/* Plain ASCII. */ \
	48	++inptr; \
	49	else if ((ch <= 0xa0 \|\| ch > 0xfe) && ch != 0x8e) \
	50	{ \
	51	/* This is illegal. */ \
e438a468	52	STANDARD_FROM_LOOP_ERR_HANDLER (1); \
8619129f UD	53	} \
	54	else \
	55	{ \
601d2942 UD	56	/* Two or more byte character. First test whether the next byte \
601d2942 UD	57	is also available. */ \
8619129f UD	58	uint32_t ch2; \
8619129f UD	59	\
b79f74cd	60	if (inptr + 1 >= inend) \
8619129f	61	{ \
601d2942 UD	62	/* The second byte is not available. Store the intermediate \
601d2942 UD	63	result. */ \
d64b6ad0	64	result = __GCONV_INCOMPLETE_INPUT; \
8619129f UD	65	break; \
	66	} \
	67	\
b79f74cd	68	ch2 = *(inptr + 1); \
8619129f UD	69	\
	70	/* All second bytes of a multibyte character must be >= 0xa1. */ \
	71	if (ch2 < 0xa1 \|\| ch2 == 0xff) \
e438a468	72	STANDARD_FROM_LOOP_ERR_HANDLER (1); \
8619129f UD	73	\
	74	if (ch == 0x8e) \
	75	{ \
	76	/* This is code set 2: CNS 11643, planes 1 to 16. */ \
085a4412	77	const unsigned char *endp = inptr + 1; \
8619129f	78	\
55985355	79	ch = cns11643_to_ucs4 (&endp, inend - inptr - 1, 0x80); \
b79f74cd UD	80	\
	81	if (ch == 0) \
	82	{ \
601d2942	83	/* The third or fourth byte is not available. Store \
b79f74cd UD	84	the intermediate result. */ \
	85	result = __GCONV_INCOMPLETE_INPUT; \
	86	break; \
	87	} \
	88	\
d64b6ad0	89	if (ch == __UNKNOWN_10646_CHAR) \
e438a468 UD	90	/* Illegal input. */ \
e438a468 UD	91	STANDARD_FROM_LOOP_ERR_HANDLER (1); \
8619129f UD	92	\
	93	inptr += 4; \
	94	} \
	95	else \
	96	{ \
	97	/* This is code set 1: CNS 11643, plane 1. */ \
15a2315c	98	const unsigned char *endp = inptr; \
8619129f	99	\
55985355	100	ch = cns11643l1_to_ucs4 (&endp, inend - inptr, 0x80); \
8619129f UD	101	/* Please note that we need not test for the missing input \
8619129f UD	102	characters here anymore. */ \
d64b6ad0	103	if (ch == __UNKNOWN_10646_CHAR) \
e438a468 UD	104	/* Illegal input. */ \
e438a468 UD	105	STANDARD_FROM_LOOP_ERR_HANDLER (2); \
8619129f UD	106	\
	107	inptr += 2; \
	108	} \
	109	} \
	110	\
77e1d15a UD	111	put32 (outptr, ch); \
77e1d15a UD	112	outptr += 4; \
8619129f	113	}
55985355	114	#define LOOP_NEED_FLAGS
f9ad060c UD	115	#define ONEBYTE_BODY \
	116	{ \
	117	if (c < 0x80) \
	118	return c; \
	119	else \
	120	return WEOF; \
	121	}
8619129f UD	122	#include <iconv/loop.c>
	123
	124
	125	/* Next, define the other direction. */
	126	#define MIN_NEEDED_INPUT MIN_NEEDED_TO
	127	#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
	128	#define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM
	129	#define LOOPFCT TO_LOOP
	130	#define BODY \
	131	{ \
77e1d15a	132	uint32_t ch = get32 (inptr); \
8619129f UD	133	\
	134	if (ch <= 0x7f) \
	135	/* It's plain ASCII. */ \
	136	*outptr++ = ch; \
	137	else \
	138	{ \
601d2942	139	/* Try the CNS 11643 planes. */ \
8619129f UD	140	size_t found; \
8619129f UD	141	\
55985355 UD	142	found = ucs4_to_cns11643l1 (ch, outptr, outend - outptr); \
55985355 UD	143	if (__builtin_expect (found, 1) == 0) \
8619129f UD	144	{ \
8619129f UD	145	/* We ran out of space. */ \
8e066520	146	result = __GCONV_FULL_OUTPUT; \
8619129f UD	147	break; \
8619129f UD	148	} \
55985355	149	if (__builtin_expect (found, 1) != __UNKNOWN_10646_CHAR) \
8619129f UD	150	{ \
	151	/* It's a CNS 11643, plane 1 character, adjust it for EUC-TW. */ \
	152	*outptr++ += 0x80; \
	153	*outptr++ += 0x80; \
	154	} \
	155	else \
	156	{ \
	157	/* No CNS 11643, plane 1 character. */ \
	158	\
55985355 UD	159	found = ucs4_to_cns11643 (ch, outptr + 1, outend - outptr - 1); \
55985355 UD	160	if (__builtin_expect (found, 1) == 0) \
8619129f UD	161	{ \
8619129f UD	162	/* We ran out of space. */ \
8e066520	163	result = __GCONV_FULL_OUTPUT; \
8619129f UD	164	break; \
8619129f UD	165	} \
55985355	166	if (__builtin_expect (found, 0) == __UNKNOWN_10646_CHAR) \
8619129f	167	{ \
601d2942 UD	168	UNICODE_TAG_HANDLER (ch, 4); \
601d2942 UD	169	\
55985355	170	/* Illegal character. */ \
e438a468	171	STANDARD_TO_LOOP_ERR_HANDLER (4); \
8619129f UD	172	} \
	173	\
	174	/* It's a CNS 11643 character, adjust it for EUC-TW. */ \
	175	*outptr++ = '\x8e'; \
	176	*outptr++ += 0xa0; \
	177	*outptr++ += 0x80; \
	178	*outptr++ += 0x80; \
	179	} \
	180	} \
	181	\
	182	inptr += 4; \
	183	}
55985355	184	#define LOOP_NEED_FLAGS
8619129f UD	185	#include <iconv/loop.c>
	186
	187
	188	/* Now define the toplevel functions. */
	189	#include <iconv/skeleton.c>