[thirdparty/glibc.git] / iconvdata / iso-2022-cn.c

/* Conversion module for ISO-2022-CN.
   Copyright (C) 1999-2014 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.

   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 <gconv.h>
#include <stdint.h>
#include <string.h>
#include "gb2312.h"
#include "cns11643l1.h"
#include "cns11643l2.h"

#include <assert.h>

/* This makes obvious what everybody knows: 0x1b is the Esc character.  */
#define ESC	0x1b

/* We have single-byte shift-in and shift-out sequences, and the single
   shift sequence SS2 which replaces the SS2 designation for the next
   two bytes.  */
#define SI	0x0f
#define SO	0x0e
#define SS2_0	ESC
#define SS2_1	0x4e

/* Definitions used in the body of the `gconv' function.  */
#define CHARSET_NAME		"ISO-2022-CN//"
#define DEFINE_INIT		1
#define DEFINE_FINI		1
#define FROM_LOOP		from_iso2022cn_loop
#define TO_LOOP			to_iso2022cn_loop
#define FROM_LOOP_MIN_NEEDED_FROM	1
#define FROM_LOOP_MAX_NEEDED_FROM	4
#define FROM_LOOP_MIN_NEEDED_TO		4
#define FROM_LOOP_MAX_NEEDED_TO		4
#define TO_LOOP_MIN_NEEDED_FROM		4
#define TO_LOOP_MAX_NEEDED_FROM		4
#define TO_LOOP_MIN_NEEDED_TO		1
#define TO_LOOP_MAX_NEEDED_TO		6
#define PREPARE_LOOP \
  int save_set;								      \
  int *setp = &data->__statep->__count;
#define EXTRA_LOOP_ARGS		, setp


/* The COUNT element of the state keeps track of the currently selected
   character set.  The possible values are:  */
enum
{
  ASCII_set = 0,
  GB2312_set = 8,
  CNS11643_1_set = 16,
  CNS11643_2_set = 24,
  CURRENT_SEL_MASK = 24,
  GB2312_ann = 32,
  CNS11643_1_ann = 64,
  CNS11643_2_ann = 128,
  CURRENT_ANN_MASK = 224
};


/* Since this is a stateful encoding we have to provide code which resets
   the output state to the initial state.  This has to be done during the
   flushing.  */
#define EMIT_SHIFT_TO_INIT \
  if (data->__statep->__count != ASCII_set)				      \
    {									      \
      if (FROM_DIRECTION)						      \
	/* It's easy, we don't have to emit anything, we just reset the	      \
	   state for the input.  */					      \
	data->__statep->__count = ASCII_set;				      \
      else								      \
	{								      \
	  /* We are not in the initial state.  To switch back we have	      \
	     to emit `SI'.  */						      \
	  if (__builtin_expect (outbuf == outend, 0))			      \
	    /* We don't have enough room in the output buffer.  */	      \
	    status = __GCONV_FULL_OUTPUT;				      \
	  else								      \
	    {								      \
	      /* Write out the shift sequence.  */			      \
	      *outbuf++ = SI;						      \
	      data->__statep->__count = ASCII_set;			      \
	    }								      \
	}								      \
    }


/* Since we might have to reset input pointer we must be able to save
   and retore the state.  */
#define SAVE_RESET_STATE(Save) \
  if (Save)								      \
    save_set = *setp;							      \
  else									      \
    *setp = save_set


/* First define the conversion function from ISO-2022-CN to UCS4.  */
#define MIN_NEEDED_INPUT	FROM_LOOP_MIN_NEEDED_FROM
#define MAX_NEEDED_INPUT	FROM_LOOP_MAX_NEEDED_FROM
#define MIN_NEEDED_OUTPUT	FROM_LOOP_MIN_NEEDED_TO
#define MAX_NEEDED_OUTPUT	FROM_LOOP_MAX_NEEDED_TO
#define LOOPFCT			FROM_LOOP
#define BODY \
  {									      \
    uint32_t ch = *inptr;						      \
									      \
    /* This is a 7bit character set, disallow all 8bit characters.  */	      \
    if (__builtin_expect (ch >= 0x7f, 0))				      \
      STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \
									      \
    /* Recognize escape sequences.  */					      \
    if (__builtin_expect (ch, 0) == ESC)				      \
      {									      \
	/* There are two kinds of escape sequences we have to handle:	      \
	   - those announcing the use of GB and CNS characters on the	      \
	     line; we can simply ignore them				      \
	   - the initial byte of the SS2 sequence.			      \
	*/								      \
	if (__builtin_expect (inptr + 2 > inend, 0)			      \
	    || (inptr[1] == '$'						      \
		&& (__builtin_expect (inptr + 3 > inend, 0)		      \
		    || (inptr[2] == ')'					      \
			&& __builtin_expect (inptr + 4 > inend, 0))	      \
		    || (inptr[2] == '*'					      \
			&& __builtin_expect (inptr + 4 > inend, 0))))	      \
	    || (inptr[1] == SS2_1					      \
		&& __builtin_expect (inptr + 4 > inend, 0)))		      \
	  {								      \
	    result = __GCONV_INCOMPLETE_INPUT;				      \
	    break;							      \
	  }								      \
	if (inptr[1] == '$'						      \
	    && ((inptr[2] == ')' && (inptr[3] == 'A' || inptr[3] == 'G'))     \
		|| (inptr[2] == '*' && inptr[3] == 'H')))		      \
	  {								      \
	    /* OK, we accept those character sets.  */			      \
	    if (inptr[3] == 'A')					      \
	      ann = GB2312_ann;						      \
	    else if (inptr[3] == 'G')					      \
	      ann = CNS11643_1_ann;					      \
	    inptr += 4;							      \
	    continue;							      \
	  }								      \
      }									      \
    else if (__builtin_expect (ch, 0) == SO)				      \
      {									      \
	/* Switch to use GB2312 or CNS 11643 plane 1, depending on which      \
	   S0 designation came last.  The only problem is what to do with     \
	   faulty input files where no designator came.			      \
	   XXX For now I'll default to use GB2312.  If this is not the	      \
	   best behaviour (e.g., we should flag an error) let me know.  */    \
	++inptr;							      \
	set = ann == CNS11643_1_ann ? CNS11643_1_set : GB2312_set;	      \
	continue;							      \
      }									      \
    else if (__builtin_expect (ch, 0) == SI)				      \
      {									      \
	/* Switch to use ASCII.  */					      \
	++inptr;							      \
	set = ASCII_set;						      \
	continue;							      \
      }									      \
									      \
    if (__builtin_expect (ch, 0) == ESC && inptr[1] == SS2_1)		      \
      {									      \
	/* This is a character from CNS 11643 plane 2.			      \
	   XXX We could test here whether the use of this character	      \
	   set was announced.  */					      \
	inptr += 2;							      \
	ch = cns11643l2_to_ucs4 (&inptr, 2, 0);				      \
	if (__builtin_expect (ch, 0) == __UNKNOWN_10646_CHAR)		      \
	  {								      \
	    inptr -= 2;							      \
	    STANDARD_FROM_LOOP_ERR_HANDLER (2);				      \
	  }								      \
      }									      \
    else if (set == ASCII_set)						      \
      {									      \
	/* Almost done, just advance the input pointer.  */		      \
	++inptr;							      \
      }									      \
    else								      \
      {									      \
	/* That's pretty easy, we have a dedicated functions for this.  */    \
	if (set == GB2312_set)						      \
	  ch = gb2312_to_ucs4 (&inptr, inend - inptr, 0);		      \
	else								      \
	  {								      \
	    assert (set == CNS11643_1_set);				      \
	    ch = cns11643l1_to_ucs4 (&inptr, inend - inptr, 0);		      \
	  }								      \
									      \
	if (__builtin_expect (ch, 1) == 0)				      \
	  {								      \
	    result = __GCONV_INCOMPLETE_INPUT;				      \
	    break;							      \
	  }								      \
	else if (__builtin_expect (ch, 1) == __UNKNOWN_10646_CHAR)	      \
	  {								      \
	    STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \
	  }								      \
      }									      \
									      \
    put32 (outptr, ch);							      \
    outptr += 4;							      \
  }
#define LOOP_NEED_FLAGS
#define EXTRA_LOOP_DECLS	, int *setp
#define INIT_PARAMS		int set = *setp & CURRENT_SEL_MASK; \
				int ann = *setp & CURRENT_ANN_MASK
#define UPDATE_PARAMS		*setp = set | ann
#include <iconv/loop.c>


/* Next, define the other direction.  */
#define MIN_NEEDED_INPUT	TO_LOOP_MIN_NEEDED_FROM
#define MAX_NEEDED_INPUT	TO_LOOP_MAX_NEEDED_FROM
#define MIN_NEEDED_OUTPUT	TO_LOOP_MIN_NEEDED_TO
#define MAX_NEEDED_OUTPUT	TO_LOOP_MAX_NEEDED_TO
#define LOOPFCT			TO_LOOP
#define BODY \
  {									      \
    uint32_t ch = get32 (inptr);					      \
									      \
    /* First see whether we can write the character using the currently	      \
       selected character set.  */					      \
    if (ch < 0x80)							      \
      {									      \
	if (set != ASCII_set)						      \
	  {								      \
	    *outptr++ = SI;						      \
	    set = ASCII_set;						      \
	    if (__builtin_expect (outptr == outend, 0))			      \
	      {								      \
		result = __GCONV_FULL_OUTPUT;				      \
		break;							      \
	      }								      \
	  }								      \
									      \
	*outptr++ = ch;							      \
									      \
	/* At the end of the line we have to clear the `ann' flags since      \
	   every line must contain this information again.  */		      \
	if (ch == L'\n')						      \
	  ann = 0;							      \
      }									      \
    else								      \
      {									      \
	unsigned char buf[2];						      \
	/* Fake initialization to keep gcc quiet.  */			      \
	asm ("" : "=m" (buf));						      \
									      \
	int used;							      \
	size_t written = 0;						      \
									      \
	if (set == GB2312_set || (ann & CNS11643_1_ann) == 0)		      \
	  {								      \
	    written = ucs4_to_gb2312 (ch, buf, 2);			      \
	    used = GB2312_set;						      \
	  }								      \
	else								      \
	  {								      \
	    written = ucs4_to_cns11643l1 (ch, buf, 2);			      \
	    used = CNS11643_1_set;					      \
	  }								      \
									      \
	if (written == __UNKNOWN_10646_CHAR)				      \
	  {								      \
	    /* Cannot convert it using the currently selected SO set.	      \
	       Next try the SS2 set.  */				      \
	    written = ucs4_to_cns11643l2 (ch, buf, 2);			      \
	    if (written != __UNKNOWN_10646_CHAR)			      \
	      /* Yep, that worked.  */					      \
	      used = CNS11643_2_set;					      \
	    else							      \
	      {								      \
		/* Well, see whether we have to change the SO set.  */	      \
		if (used == GB2312_set)					      \
		  written = ucs4_to_cns11643l1 (ch, buf, 2);		      \
		else							      \
		  written = ucs4_to_gb2312 (ch, buf, 2);		      \
									      \
		if (__builtin_expect (written, 0) != __UNKNOWN_10646_CHAR)    \
		  /* Oh well, then switch SO.  */			      \
		  used = GB2312_set + CNS11643_1_set - used;		      \
		else							      \
		  {							      \
		    UNICODE_TAG_HANDLER (ch, 4);			      \
									      \
		    /* Even this does not work.  Error.  */		      \
		    STANDARD_TO_LOOP_ERR_HANDLER (4);			      \
		  }							      \
	      }								      \
	  }								      \
	assert (written == 2);						      \
									      \
	/* See whether we have to emit an escape sequence.  */		      \
	if (set != used)						      \
	  {								      \
	    /* First see whether we announced that we use this		      \
	       character set.  */					      \
	    if ((ann & (16 << (used >> 3))) == 0)			      \
	      {								      \
		const char *escseq;					      \
									      \
		if (__builtin_expect (outptr + 4 > outend, 0))		      \
		  {							      \
		    result = __GCONV_FULL_OUTPUT;			      \
		    break;						      \
		  }							      \
									      \
		assert ((used >> 3) >= 1 && (used >> 3) <= 3);		      \
		escseq = ")A)G*H" + ((used >> 3) - 1) * 2;		      \
		*outptr++ = ESC;					      \
		*outptr++ = '$';					      \
		*outptr++ = *escseq++;					      \
		*outptr++ = *escseq++;					      \
									      \
		if (used == GB2312_set)					      \
		  ann = (ann & CNS11643_2_ann) | GB2312_ann;		      \
		else if (used == CNS11643_1_set)			      \
		  ann = (ann & CNS11643_2_ann) | CNS11643_1_ann;	      \
		else							      \
		  ann |= CNS11643_2_ann;				      \
	      }								      \
									      \
	    if (used == CNS11643_2_set)					      \
	      {								      \
		if (__builtin_expect (outptr + 2 > outend, 0))		      \
		  {							      \
		    result = __GCONV_FULL_OUTPUT;			      \
		    break;						      \
		  }							      \
		*outptr++ = SS2_0;					      \
		*outptr++ = SS2_1;					      \
	      }								      \
	    else							      \
	      {								      \
		/* We only have to emit something is currently ASCII is	      \
		   selected.  Otherwise we are switching within the	      \
		   SO charset.  */					      \
		if (set == ASCII_set)					      \
		  {							      \
		    if (__builtin_expect (outptr + 1 > outend, 0))	      \
		      {							      \
			result = __GCONV_FULL_OUTPUT;			      \
			break;						      \
		      }							      \
		    *outptr++ = SO;					      \
		  }							      \
	      }								      \
									      \
	    /* Always test the length here since we have used up all the      \
	       guaranteed output buffer slots.  */			      \
	    if (__builtin_expect (outptr + 2 > outend, 0))		      \
	      {								      \
		result = __GCONV_FULL_OUTPUT;				      \
		break;							      \
	      }								      \
	  }								      \
	else if (__builtin_expect (outptr + 2 > outend, 0))		      \
	  {								      \
	    result = __GCONV_FULL_OUTPUT;				      \
	    break;							      \
	  }								      \
									      \
	*outptr++ = buf[0];						      \
	*outptr++ = buf[1];						      \
	set = used;							      \
      }									      \
									      \
    /* Now that we wrote the output increment the input pointer.  */	      \
    inptr += 4;								      \
  }
#define LOOP_NEED_FLAGS
#define EXTRA_LOOP_DECLS	, int *setp
#define INIT_PARAMS		int set = *setp & CURRENT_SEL_MASK; \
				int ann = *setp & CURRENT_ANN_MASK
#define REINIT_PARAMS		do					      \
				  {					      \
				    set = *setp & CURRENT_SEL_MASK;	      \
				    ann = *setp & CURRENT_ANN_MASK;	      \
				  }					      \
				while (0)
#define UPDATE_PARAMS		*setp = set | ann
#include <iconv/loop.c>


/* Now define the toplevel functions.  */
#include <iconv/skeleton.c>
Commit	Line	Data
15a2315c	1	/* Conversion module for ISO-2022-CN.
d4697bc9	2	Copyright (C) 1999-2014 Free Software Foundation, Inc.
15a2315c UD	3	This file is part of the GNU C Library.
	4	Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
	5
	6	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	7	modify it under the terms of the GNU Lesser General Public
	8	License as published by the Free Software Foundation; either
	9	version 2.1 of the License, or (at your option) any later version.
15a2315c UD	10
	11	The GNU C Library is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2	14	Lesser General Public License for more details.
15a2315c	15
41bdb6e2	16	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	17	License along with the GNU C Library; if not, see
59ba27a6 PE	18	<http://www.gnu.org/licenses/>. */
15a2315c	19
55985355	20	#include <dlfcn.h>
15a2315c UD	21	#include <gconv.h>
	22	#include <stdint.h>
	23	#include <string.h>
	24	#include "gb2312.h"
	25	#include "cns11643l1.h"
	26	#include "cns11643l2.h"
	27
	28	#include <assert.h>
	29
	30	/* This makes obvious what everybody knows: 0x1b is the Esc character. */
	31	#define ESC 0x1b
	32
	33	/* We have single-byte shift-in and shift-out sequences, and the single
	34	shift sequence SS2 which replaces the SS2 designation for the next
	35	two bytes. */
	36	#define SI 0x0f
	37	#define SO 0x0e
	38	#define SS2_0 ESC
	39	#define SS2_1 0x4e
	40
	41	/* Definitions used in the body of the `gconv' function. */
	42	#define CHARSET_NAME "ISO-2022-CN//"
	43	#define DEFINE_INIT 1
	44	#define DEFINE_FINI 1
	45	#define FROM_LOOP from_iso2022cn_loop
	46	#define TO_LOOP to_iso2022cn_loop
faaa6f62 UD	47	#define FROM_LOOP_MIN_NEEDED_FROM 1
	48	#define FROM_LOOP_MAX_NEEDED_FROM 4
	49	#define FROM_LOOP_MIN_NEEDED_TO 4
	50	#define FROM_LOOP_MAX_NEEDED_TO 4
	51	#define TO_LOOP_MIN_NEEDED_FROM 4
	52	#define TO_LOOP_MAX_NEEDED_FROM 4
	53	#define TO_LOOP_MIN_NEEDED_TO 1
	54	#define TO_LOOP_MAX_NEEDED_TO 6
15a2315c UD	55	#define PREPARE_LOOP \
15a2315c UD	56	int save_set; \
aa831d6d	57	int *setp = &data->__statep->__count;
15a2315c UD	58	#define EXTRA_LOOP_ARGS , setp
	59
	60
	61	/* The COUNT element of the state keeps track of the currently selected
	62	character set. The possible values are: */
	63	enum
	64	{
	65	ASCII_set = 0,
fd1b5c0f UD	66	GB2312_set = 8,
	67	CNS11643_1_set = 16,
	68	CNS11643_2_set = 24,
	69	CURRENT_SEL_MASK = 24,
	70	GB2312_ann = 32,
	71	CNS11643_1_ann = 64,
	72	CNS11643_2_ann = 128,
	73	CURRENT_ANN_MASK = 224
15a2315c UD	74	};
	75
	76
	77	/* Since this is a stateful encoding we have to provide code which resets
	78	the output state to the initial state. This has to be done during the
	79	flushing. */
	80	#define EMIT_SHIFT_TO_INIT \
aa831d6d	81	if (data->__statep->__count != ASCII_set) \
15a2315c UD	82	{ \
	83	if (FROM_DIRECTION) \
	84	/* It's easy, we don't have to emit anything, we just reset the \
	85	state for the input. */ \
aa831d6d	86	data->__statep->__count = ASCII_set; \
15a2315c UD	87	else \
15a2315c UD	88	{ \
15a2315c UD	89	/* We are not in the initial state. To switch back we have \
15a2315c UD	90	to emit `SI'. */ \
2373b30e	91	if (__builtin_expect (outbuf == outend, 0)) \
15a2315c UD	92	/* We don't have enough room in the output buffer. */ \
	93	status = __GCONV_FULL_OUTPUT; \
	94	else \
	95	{ \
	96	/* Write out the shift sequence. */ \
	97	*outbuf++ = SI; \
aa831d6d	98	data->__statep->__count = ASCII_set; \
15a2315c UD	99	} \
	100	} \
	101	}
	102
	103
	104	/* Since we might have to reset input pointer we must be able to save
	105	and retore the state. */
	106	#define SAVE_RESET_STATE(Save) \
	107	if (Save) \
	108	save_set = *setp; \
	109	else \
	110	*setp = save_set
	111
	112
	113	/* First define the conversion function from ISO-2022-CN to UCS4. */
faaa6f62 UD	114	#define MIN_NEEDED_INPUT FROM_LOOP_MIN_NEEDED_FROM
	115	#define MAX_NEEDED_INPUT FROM_LOOP_MAX_NEEDED_FROM
	116	#define MIN_NEEDED_OUTPUT FROM_LOOP_MIN_NEEDED_TO
	117	#define MAX_NEEDED_OUTPUT FROM_LOOP_MAX_NEEDED_TO
15a2315c UD	118	#define LOOPFCT FROM_LOOP
	119	#define BODY \
	120	{ \
	121	uint32_t ch = *inptr; \
	122	\
	123	/* This is a 7bit character set, disallow all 8bit characters. */ \
db2d05f9	124	if (__builtin_expect (ch >= 0x7f, 0)) \
e438a468	125	STANDARD_FROM_LOOP_ERR_HANDLER (1); \
15a2315c UD	126	\
15a2315c UD	127	/* Recognize escape sequences. */ \
89301d68	128	if (__builtin_expect (ch, 0) == ESC) \
15a2315c UD	129	{ \
	130	/* There are two kinds of escape sequences we have to handle: \
	131	- those announcing the use of GB and CNS characters on the \
	132	line; we can simply ignore them \
	133	- the initial byte of the SS2 sequence. \
	134	*/ \
755104ed	135	if (__builtin_expect (inptr + 2 > inend, 0) \
55985355	136	\|\| (inptr[1] == '$' \
755104ed	137	&& (__builtin_expect (inptr + 3 > inend, 0) \
55985355	138	\|\| (inptr[2] == ')' \
755104ed	139	&& __builtin_expect (inptr + 4 > inend, 0)) \
55985355	140	\|\| (inptr[2] == '*' \
755104ed	141	&& __builtin_expect (inptr + 4 > inend, 0)))) \
55985355	142	\|\| (inptr[1] == SS2_1 \
755104ed	143	&& __builtin_expect (inptr + 4 > inend, 0))) \
15a2315c	144	{ \
c7c3b0e9	145	result = __GCONV_INCOMPLETE_INPUT; \
15a2315c UD	146	break; \
	147	} \
	148	if (inptr[1] == '$' \
	149	&& ((inptr[2] == ')' && (inptr[3] == 'A' \|\| inptr[3] == 'G')) \
	150	\|\| (inptr[2] == '*' && inptr[3] == 'H'))) \
	151	{ \
	152	/* OK, we accept those character sets. */ \
	153	if (inptr[3] == 'A') \
	154	ann = GB2312_ann; \
	155	else if (inptr[3] == 'G') \
	156	ann = CNS11643_1_ann; \
	157	inptr += 4; \
	158	continue; \
	159	} \
	160	} \
89301d68	161	else if (__builtin_expect (ch, 0) == SO) \
15a2315c UD	162	{ \
	163	/* Switch to use GB2312 or CNS 11643 plane 1, depending on which \
	164	S0 designation came last. The only problem is what to do with \
	165	faulty input files where no designator came. \
	166	XXX For now I'll default to use GB2312. If this is not the \
	167	best behaviour (e.g., we should flag an error) let me know. */ \
	168	++inptr; \
	169	set = ann == CNS11643_1_ann ? CNS11643_1_set : GB2312_set; \
	170	continue; \
	171	} \
89301d68	172	else if (__builtin_expect (ch, 0) == SI) \
15a2315c UD	173	{ \
	174	/* Switch to use ASCII. */ \
	175	++inptr; \
	176	set = ASCII_set; \
	177	continue; \
	178	} \
	179	\
89301d68	180	if (__builtin_expect (ch, 0) == ESC && inptr[1] == SS2_1) \
15a2315c UD	181	{ \
	182	/* This is a character from CNS 11643 plane 2. \
	183	XXX We could test here whether the use of this character \
	184	set was announced. */ \
	185	inptr += 2; \
	186	ch = cns11643l2_to_ucs4 (&inptr, 2, 0); \
89301d68	187	if (__builtin_expect (ch, 0) == __UNKNOWN_10646_CHAR) \
15a2315c	188	{ \
e438a468 UD	189	inptr -= 2; \
e438a468 UD	190	STANDARD_FROM_LOOP_ERR_HANDLER (2); \
15a2315c UD	191	} \
	192	} \
	193	else if (set == ASCII_set) \
	194	{ \
	195	/* Almost done, just advance the input pointer. */ \
	196	++inptr; \
	197	} \
	198	else \
	199	{ \
	200	/* That's pretty easy, we have a dedicated functions for this. */ \
	201	if (set == GB2312_set) \
55985355	202	ch = gb2312_to_ucs4 (&inptr, inend - inptr, 0); \
15a2315c UD	203	else \
	204	{ \
	205	assert (set == CNS11643_1_set); \
55985355	206	ch = cns11643l1_to_ucs4 (&inptr, inend - inptr, 0); \
15a2315c UD	207	} \
15a2315c UD	208	\
55985355	209	if (__builtin_expect (ch, 1) == 0) \
15a2315c	210	{ \
c7c3b0e9	211	result = __GCONV_INCOMPLETE_INPUT; \
15a2315c UD	212	break; \
15a2315c UD	213	} \
89301d68	214	else if (__builtin_expect (ch, 1) == __UNKNOWN_10646_CHAR) \
15a2315c	215	{ \
e438a468	216	STANDARD_FROM_LOOP_ERR_HANDLER (1); \
15a2315c UD	217	} \
	218	} \
	219	\
77e1d15a UD	220	put32 (outptr, ch); \
77e1d15a UD	221	outptr += 4; \
15a2315c	222	}
55985355	223	#define LOOP_NEED_FLAGS
15a2315c	224	#define EXTRA_LOOP_DECLS , int *setp
fd1b5c0f UD	225	#define INIT_PARAMS int set = *setp & CURRENT_SEL_MASK; \
fd1b5c0f UD	226	int ann = *setp & CURRENT_ANN_MASK
15a2315c UD	227	#define UPDATE_PARAMS *setp = set \| ann
	228	#include <iconv/loop.c>
	229
	230
	231	/* Next, define the other direction. */
faaa6f62 UD	232	#define MIN_NEEDED_INPUT TO_LOOP_MIN_NEEDED_FROM
	233	#define MAX_NEEDED_INPUT TO_LOOP_MAX_NEEDED_FROM
	234	#define MIN_NEEDED_OUTPUT TO_LOOP_MIN_NEEDED_TO
	235	#define MAX_NEEDED_OUTPUT TO_LOOP_MAX_NEEDED_TO
15a2315c UD	236	#define LOOPFCT TO_LOOP
	237	#define BODY \
	238	{ \
89301d68	239	uint32_t ch = get32 (inptr); \
15a2315c UD	240	\
	241	/* First see whether we can write the character using the currently \
	242	selected character set. */ \
	243	if (ch < 0x80) \
	244	{ \
	245	if (set != ASCII_set) \
	246	{ \
	247	*outptr++ = SI; \
	248	set = ASCII_set; \
55985355	249	if (__builtin_expect (outptr == outend, 0)) \
15a2315c UD	250	{ \
	251	result = __GCONV_FULL_OUTPUT; \
	252	break; \
	253	} \
	254	} \
	255	\
	256	*outptr++ = ch; \
15a2315c UD	257	\
	258	/* At the end of the line we have to clear the `ann' flags since \
	259	every line must contain this information again. */ \
	260	if (ch == L'\n') \
	261	ann = 0; \
	262	} \
	263	else \
	264	{ \
085a4412	265	unsigned char buf[2]; \
278bfa00 UD	266	/* Fake initialization to keep gcc quiet. */ \
	267	asm ("" : "=m" (buf)); \
	268	\
15a2315c	269	int used; \
89301d68	270	size_t written = 0; \
15a2315c UD	271	\
	272	if (set == GB2312_set \|\| (ann & CNS11643_1_ann) == 0) \
	273	{ \
	274	written = ucs4_to_gb2312 (ch, buf, 2); \
	275	used = GB2312_set; \
	276	} \
	277	else \
	278	{ \
	279	written = ucs4_to_cns11643l1 (ch, buf, 2); \
	280	used = CNS11643_1_set; \
	281	} \
	282	\
	283	if (written == __UNKNOWN_10646_CHAR) \
	284	{ \
	285	/* Cannot convert it using the currently selected SO set. \
	286	Next try the SS2 set. */ \
	287	written = ucs4_to_cns11643l2 (ch, buf, 2); \
	288	if (written != __UNKNOWN_10646_CHAR) \
	289	/* Yep, that worked. */ \
	290	used = CNS11643_2_set; \
	291	else \
	292	{ \
	293	/* Well, see whether we have to change the SO set. */ \
755104ed	294	if (used == GB2312_set) \
15a2315c UD	295	written = ucs4_to_cns11643l1 (ch, buf, 2); \
	296	else \
	297	written = ucs4_to_gb2312 (ch, buf, 2); \
	298	\
1f20e04b	299	if (__builtin_expect (written, 0) != __UNKNOWN_10646_CHAR) \
15a2315c	300	/* Oh well, then switch SO. */ \
755104ed	301	used = GB2312_set + CNS11643_1_set - used; \
15a2315c UD	302	else \
15a2315c UD	303	{ \
601d2942 UD	304	UNICODE_TAG_HANDLER (ch, 4); \
601d2942 UD	305	\
15a2315c	306	/* Even this does not work. Error. */ \
e438a468	307	STANDARD_TO_LOOP_ERR_HANDLER (4); \
15a2315c UD	308	} \
	309	} \
	310	} \
	311	assert (written == 2); \
	312	\
	313	/* See whether we have to emit an escape sequence. */ \
	314	if (set != used) \
	315	{ \
	316	/* First see whether we announced that we use this \
	317	character set. */ \
755104ed	318	if ((ann & (16 << (used >> 3))) == 0) \
15a2315c UD	319	{ \
	320	const char *escseq; \
	321	\
55985355	322	if (__builtin_expect (outptr + 4 > outend, 0)) \
15a2315c UD	323	{ \
	324	result = __GCONV_FULL_OUTPUT; \
	325	break; \
	326	} \
	327	\
755104ed UD	328	assert ((used >> 3) >= 1 && (used >> 3) <= 3); \
	329	escseq = ")A)GH" + ((used >> 3) - 1) 2; \
	330	*outptr++ = ESC; \
	331	*outptr++ = '$'; \
15a2315c UD	332	outptr++ = escseq++; \
	333	outptr++ = escseq++; \
	334	\
	335	if (used == GB2312_set) \
	336	ann = (ann & CNS11643_2_ann) \| GB2312_ann; \
	337	else if (used == CNS11643_1_set) \
	338	ann = (ann & CNS11643_2_ann) \| CNS11643_1_ann; \
	339	else \
	340	ann \|= CNS11643_2_ann; \
	341	} \
	342	\
	343	if (used == CNS11643_2_set) \
	344	{ \
89301d68	345	if (__builtin_expect (outptr + 2 > outend, 0)) \
15a2315c UD	346	{ \
	347	result = __GCONV_FULL_OUTPUT; \
	348	break; \
	349	} \
	350	*outptr++ = SS2_0; \
	351	*outptr++ = SS2_1; \
	352	} \
	353	else \
	354	{ \
	355	/* We only have to emit something is currently ASCII is \
	356	selected. Otherwise we are switching within the \
	357	SO charset. */ \
	358	if (set == ASCII_set) \
	359	{ \
89301d68	360	if (__builtin_expect (outptr + 1 > outend, 0)) \
15a2315c UD	361	{ \
	362	result = __GCONV_FULL_OUTPUT; \
	363	break; \
	364	} \
	365	*outptr++ = SO; \
	366	} \
	367	} \
	368	\
	369	/* Always test the length here since we have used up all the \
	370	guaranteed output buffer slots. */ \
89301d68	371	if (__builtin_expect (outptr + 2 > outend, 0)) \
15a2315c UD	372	{ \
	373	result = __GCONV_FULL_OUTPUT; \
	374	break; \
	375	} \
	376	} \
55985355	377	else if (__builtin_expect (outptr + 2 > outend, 0)) \
15a2315c UD	378	{ \
	379	result = __GCONV_FULL_OUTPUT; \
	380	break; \
	381	} \
	382	\
	383	*outptr++ = buf[0]; \
	384	*outptr++ = buf[1]; \
755104ed	385	set = used; \
15a2315c UD	386	} \
	387	\
	388	/* Now that we wrote the output increment the input pointer. */ \
	389	inptr += 4; \
	390	}
55985355	391	#define LOOP_NEED_FLAGS
15a2315c	392	#define EXTRA_LOOP_DECLS , int *setp
fd1b5c0f UD	393	#define INIT_PARAMS int set = *setp & CURRENT_SEL_MASK; \
fd1b5c0f UD	394	int ann = *setp & CURRENT_ANN_MASK
4b1b449d UD	395	#define REINIT_PARAMS do \
	396	{ \
	397	set = *setp & CURRENT_SEL_MASK; \
	398	ann = *setp & CURRENT_ANN_MASK; \
	399	} \
	400	while (0)
15a2315c UD	401	#define UPDATE_PARAMS *setp = set \| ann
	402	#include <iconv/loop.c>
	403
	404
	405	/* Now define the toplevel functions. */
	406	#include <iconv/skeleton.c>