/* Conversion module for ISO-2022-JP and ISO-2022-JP-2.

   Copyright (C) 1998-2018 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 <assert.h>

#include <dlfcn.h>

#include <gconv.h>

#include <stdint.h>

#include <stdlib.h>

#include <string.h>

#include "jis0201.h"

#include "jis0208.h"

#include "jis0212.h"

#include "gb2312.h"

#include "ksc5601.h"

struct gap

{

  uint16_t start;

  uint16_t end;

  int32_t idx;

};

#include "iso8859-7jp.h"

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

#define ESC 0x1b

/* We provide our own initialization and destructor function.  */

#define DEFINE_INIT	0

#define DEFINE_FINI	0

/* Definitions used in the body of the `gconv' function.  */

#define FROM_LOOP		from_iso2022jp_loop

#define TO_LOOP			to_iso2022jp_loop

#define ONE_DIRECTION			0

#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 FROM_DIRECTION		(dir == from_iso2022jp)

#define PREPARE_LOOP \

  enum direction dir = ((struct iso2022jp_data *) step->__data)->dir;	      \

  enum variant var = ((struct iso2022jp_data *) step->__data)->var;	      \

  int save_set;								      \

  int *setp = &data->__statep->__count;

#define EXTRA_LOOP_ARGS		, var, setp

/* Direction of the transformation.  */

enum direction

{

  illegal_dir,

  to_iso2022jp,

  from_iso2022jp

};

/* We handle ISO-2022-jp and ISO-2022-JP-2 here.  */

enum variant

{

  illegal_var,

  iso2022jp,

  iso2022jp2

};

struct iso2022jp_data

{

  enum direction dir;

  enum variant var;

};

/* The COUNT element of the state keeps track of the currently selected

   character set.  The possible values are:  */

enum

{

  ASCII_set = 0,

  JISX0208_1978_set = 1 << 3,

  JISX0208_1983_set = 2 << 3,

  JISX0201_Roman_set = 3 << 3,

  JISX0201_Kana_set = 4 << 3,

  GB2312_set = 5 << 3,

  KSC5601_set = 6 << 3,

  JISX0212_set = 7 << 3,

  CURRENT_SEL_MASK = 7 << 3

};

/* The second value stored is the designation of the G2 set.  The following

   values are possible:  */

enum

{

  UNSPECIFIED_set = 0,

  ISO88591_set = 1 << 6,

  ISO88597_set = 2 << 6,

  CURRENT_ASSIGN_MASK = 3 << 6

};

/* The third value, only used during conversion from Unicode to ISO-2022-JP-2,

   describes the language tag parsing status.  The possible values are as

   follows.  Values >= TAG_language are temporary tag parsing states.  */

enum

{

  TAG_none = 0,

  TAG_language = 4 << 8,

  TAG_language_j = 5 << 8,

  TAG_language_ja = 1 << 8,

  TAG_language_k = 6 << 8,

  TAG_language_ko = 2 << 8,

  TAG_language_z = 7 << 8,

  TAG_language_zh = 3 << 8,

  CURRENT_TAG_MASK = 7 << 8

};

extern int gconv_init (struct __gconv_step *step);

int

gconv_init (struct __gconv_step *step)

{

  /* Determine which direction.  */

  struct iso2022jp_data *new_data;

  enum direction dir = illegal_dir;

  enum variant var = illegal_var;

  int result;

  if (__strcasecmp (step->__from_name, "ISO-2022-JP//") == 0)

    {

      dir = from_iso2022jp;

      var = iso2022jp;

    }

  else if (__strcasecmp (step->__to_name, "ISO-2022-JP//") == 0)

    {

      dir = to_iso2022jp;

      var = iso2022jp;

    }

  else if (__strcasecmp (step->__from_name, "ISO-2022-JP-2//") == 0)

    {

      dir = from_iso2022jp;

      var = iso2022jp2;

    }

  else if (__strcasecmp (step->__to_name, "ISO-2022-JP-2//") == 0)

    {

      dir = to_iso2022jp;

      var = iso2022jp2;

    }

  result = __GCONV_NOCONV;

  if (__builtin_expect (dir, from_iso2022jp) != illegal_dir)

    {

      new_data

	= (struct iso2022jp_data *) malloc (sizeof (struct iso2022jp_data));

      result = __GCONV_NOMEM;

      if (new_data != NULL)

	{

	  new_data->dir = dir;

	  new_data->var = var;

	  step->__data = new_data;

	  if (dir == from_iso2022jp)

	    {

	      step->__min_needed_from = FROM_LOOP_MIN_NEEDED_FROM;

	      step->__max_needed_from = FROM_LOOP_MAX_NEEDED_FROM;

	      step->__min_needed_to = FROM_LOOP_MIN_NEEDED_TO;

	      step->__max_needed_to = FROM_LOOP_MAX_NEEDED_TO;

	    }

	  else

	    {

	      step->__min_needed_from = TO_LOOP_MIN_NEEDED_FROM;

	      step->__max_needed_from = TO_LOOP_MAX_NEEDED_FROM;

	      step->__min_needed_to = TO_LOOP_MIN_NEEDED_TO;

	      step->__max_needed_to = TO_LOOP_MAX_NEEDED_TO;

	    }

	  /* Yes, this is a stateful encoding.  */

	  step->__stateful = 1;

	  result = __GCONV_OK;

	}

    }

  return result;

}

extern void gconv_end (struct __gconv_step *data);

void

gconv_end (struct __gconv_step *data)

{

  free (data->__data);

}

/* 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 \

  /* Avoid warning about unused variable 'var'.  */			      \

  (void) var;								      \

									      \

  if ((data->__statep->__count & ~7) != ASCII_set)			      \

    {									      \

      if (dir == from_iso2022jp						      \

	  || (data->__statep->__count & CURRENT_SEL_MASK) == ASCII_set)	      \

	{								      \

	  /* It's easy, we don't have to emit anything, we just reset the     \

	     state for the input.  Note that this also clears the G2	      \

	     designation.  */						      \

	  data->__statep->__count &= 7;					      \

	  data->__statep->__count |= ASCII_set;				      \

	}								      \

      else								      \

	{								      \

	  /* We are not in the initial state.  To switch back we have	      \

	     to emit the sequence `Esc ( B'.  */			      \

	  if (__glibc_unlikely (outbuf + 3 > outend))			      \

	    /* We don't have enough room in the output buffer.  */	      \

	    status = __GCONV_FULL_OUTPUT;				      \

	  else								      \

	    {								      \

	      /* Write out the shift sequence.  */			      \

	      *outbuf++ = ESC;						      \

	      *outbuf++ = '(';						      \

	      *outbuf++ = 'B';						      \

	      /* Note that this also clears the G2 designation.  */	      \

	      data->__statep->__count &= 7;				      \

	      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-JP 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;						      \

									      \

    /* Recognize escape sequences.  */					      \

    if (__builtin_expect (ch, 0) == ESC)				      \

      {									      \

	/* We now must be prepared to read two to three more		      \

	   characters.  If we have a match in the first character but	      \

	   then the input buffer ends we terminate with an error since	      \

	   we must not risk missing an escape sequence just because it	      \

	   is not entirely in the current input buffer.  */		      \

	if (__builtin_expect (inptr + 2 >= inend, 0)			      \

	    || (var == iso2022jp2 && inptr[1] == '$' && inptr[2] == '('	      \

		&& __builtin_expect (inptr + 3 >= inend, 0)))		      \

	  {								      \

	    /* Not enough input available.  */				      \

	    result = __GCONV_INCOMPLETE_INPUT;				      \

	    break;							      \

	  }								      \

									      \

	if (inptr[1] == '(')						      \

	  {								      \

	    if (inptr[2] == 'B')					      \

	      {								      \

		/* ASCII selected.  */					      \

		set = ASCII_set;					      \

		inptr += 3;						      \

		continue;						      \

	      }								      \

	    else if (inptr[2] == 'J')					      \

	      {								      \

		/* JIS X 0201 selected.  */				      \

		set = JISX0201_Roman_set;				      \

		inptr += 3;						      \

		continue;						      \

	      }								      \

	    else if (var == iso2022jp2 && inptr[2] == 'I')		      \

	      {								      \

		/* JIS X 0201 selected.  */				      \

		set = JISX0201_Kana_set;				      \

		inptr += 3;						      \

		continue;						      \

	      }								      \

	  }								      \

	else if (inptr[1] == '$')					      \

	  {								      \

	    if (inptr[2] == '@')					      \

	      {								      \

		/* JIS X 0208-1978 selected.  */			      \

		set = JISX0208_1978_set;				      \

		inptr += 3;						      \

		continue;						      \

	      }								      \

	    else if (inptr[2] == 'B')					      \

	      {								      \

		/* JIS X 0208-1983 selected.  */			      \

		set = JISX0208_1983_set;				      \

		inptr += 3;						      \

		continue;						      \

	      }								      \

	    else if (var == iso2022jp2)					      \

	      {								      \

		if (inptr[2] == 'A')					      \

		  {							      \

		    /* GB 2312-1980 selected.  */			      \

		    set = GB2312_set;					      \

		    inptr += 3;						      \

		    continue;						      \

		  }							      \

		else if (inptr[2] == '(')				      \

		  {							      \

		    if (inptr[3] == 'C')				      \

		      {							      \

			/* KSC 5601-1987 selected.  */			      \

			set = KSC5601_set;				      \

			inptr += 4;					      \

			continue;					      \

		      }							      \

		    else if (inptr[3] == 'D')				      \

		      {							      \

			/* JIS X 0212-1990 selected.  */		      \

			set = JISX0212_set;				      \

			inptr += 4;					      \

			continue;					      \

		      }							      \

		  }							      \

	      }								      \

	  }								      \

	else if (var == iso2022jp2 && inptr[1] == '.')			      \

	  {								      \

	    if (inptr[2] == 'A')					      \

	      {								      \

		/* ISO 8859-1-GR selected.  */				      \

		set2 = ISO88591_set;					      \

		inptr += 3;						      \

		continue;						      \

	      }								      \

	    else if (inptr[2] == 'F')					      \

	      {								      \

		/* ISO 8859-7-GR selected.  */				      \

		set2 = ISO88597_set;					      \

		inptr += 3;						      \

		continue;						      \

	      }								      \

	  }								      \

      }									      \

									      \

    if (ch == ESC && var == iso2022jp2 && inptr[1] == 'N')		      \

      {									      \

	if (set2 == ISO88591_set)					      \

	  {								      \

	    ch = inptr[2] | 0x80;					      \

	    inptr += 3;							      \

	  }								      \

	else if (__builtin_expect (set2, ISO88597_set) == ISO88597_set)	      \

	  {								      \

	    /* We use the table from the ISO 8859-7 module.  */		      \

	    if (inptr[2] < 0x20 || inptr[2] >= 0x80)			      \

	      STANDARD_FROM_LOOP_ERR_HANDLER (1);			      \

	    ch = iso88597_to_ucs4[inptr[2] - 0x20];			      \

	    if (ch == 0)						      \

	      STANDARD_FROM_LOOP_ERR_HANDLER (3);			      \

	    inptr += 3;							      \

	  }								      \

	else								      \

	  {								      \

	    STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \

	  }								      \

      }									      \

    else if (ch >= 0x80)						      \

      {									      \

	STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \

      }									      \

    else if (set == ASCII_set || (ch < 0x21 || ch == 0x7f))		      \

      /* Almost done, just advance the input pointer.  */		      \

      ++inptr;								      \

    else if (set == JISX0201_Roman_set)					      \

      {									      \

	/* Use the JIS X 0201 table.  */				      \

	ch = jisx0201_to_ucs4 (ch);					      \

	if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR))		      \

	  STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \

	++inptr;							      \

      }									      \

    else if (set == JISX0201_Kana_set)					      \

      {									      \

	/* Use the JIS X 0201 table.  */				      \

	ch = jisx0201_to_ucs4 (ch + 0x80);				      \

	if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR))		      \

	  STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \

	++inptr;							      \

      }									      \

    else								      \

      {									      \

	if (set == JISX0208_1978_set || set == JISX0208_1983_set)	      \

	  /* XXX I don't have the tables for these two old variants of	      \

	     JIS X 0208.  Therefore I'm using the tables for JIS X	      \

	     0208-1990.  If somebody has problems with this please	      \

	     provide the appropriate tables.  */			      \

	  ch = jisx0208_to_ucs4 (&inptr, inend - inptr, 0);		      \

	else if (set == JISX0212_set)					      \

	  /* Use the JIS X 0212 table.  */				      \

	  ch = jisx0212_to_ucs4 (&inptr, inend - inptr, 0);		      \

	else if (set == GB2312_set)					      \

	  /* Use the GB 2312 table.  */					      \

	  ch = gb2312_to_ucs4 (&inptr, inend - inptr, 0);		      \

	else								      \

	  {								      \

	    assert (set == KSC5601_set);				      \

									      \

	    /* Use the KSC 5601 table.  */				      \

	    ch = ksc5601_to_ucs4 (&inptr, inend - inptr, 0);		      \

	  }								      \

									      \

	if (__glibc_unlikely (ch == 0))					      \

	  {								      \

	    result = __GCONV_INCOMPLETE_INPUT;				      \

	    break;							      \

	  }								      \

	else if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR))		      \

	  {								      \

	    STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \

	  }								      \

      }									      \

									      \

    put32 (outptr, ch);							      \

    outptr += 4;							      \

  }

#define LOOP_NEED_FLAGS

#define EXTRA_LOOP_DECLS	, enum variant var, int *setp

#define INIT_PARAMS		int set = *setp & CURRENT_SEL_MASK;	      \

				int set2 = *setp & CURRENT_ASSIGN_MASK

#define UPDATE_PARAMS		*setp = set | set2

#include <iconv/loop.c>

/* Next, define the other direction.  */

enum conversion { none = 0, european, japanese, chinese, korean, other };

/* A datatype for conversion lists.  */

typedef unsigned int cvlist_t;

#define CVLIST(cv1, cv2, cv3, cv4, cv5) \

  ((cv1) + ((cv2) << 3) + ((cv3) << 6) + ((cv4) << 9) + ((cv5) << 12))

#define CVLIST_FIRST(cvl) ((cvl) & ((1 << 3) - 1))

#define CVLIST_REST(cvl) ((cvl) >> 3)

static const cvlist_t conversion_lists[4] =

  {

    /* TAG_none */        CVLIST (japanese, european, chinese, korean, other),

    /* TAG_language_ja */ CVLIST (japanese, european, chinese, korean, other),

    /* TAG_language_ko */ CVLIST (korean, european, japanese, chinese, other),

    /* TAG_language_zh */ CVLIST (chinese, european, japanese, korean, other)

  };

#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;							      \

    size_t written;							      \

									      \

    ch = get32 (inptr);							      \

									      \

    if (var == iso2022jp2)						      \

      {									      \

	/* Handle Unicode tag characters (range U+E0000..U+E007F).  */	      \

	if (__glibc_unlikely ((ch >> 7) == (0xe0000 >> 7)))		      \

	  {								      \

	    ch &= 0x7f;							      \

	    if (ch >= 'A' && ch <= 'Z')					      \

	      ch += 'a' - 'A';						      \

	    if (ch == 0x01)						      \

	      tag = TAG_language;					      \

	    else if (ch == 'j' && tag == TAG_language)			      \

	      tag = TAG_language_j;					      \

	    else if (ch == 'a' && tag == TAG_language_j)		      \

	      tag = TAG_language_ja;					      \

	    else if (ch == 'k' && tag == TAG_language)			      \

	      tag = TAG_language_k;					      \

	    else if (ch == 'o' && tag == TAG_language_k)		      \

	      tag = TAG_language_ko;					      \

	    else if (ch == 'z' && tag == TAG_language)			      \

	      tag = TAG_language_z;					      \

	    else if (ch == 'h' && tag == TAG_language_z)		      \

	      tag = TAG_language_zh;					      \

	    else if (ch == 0x7f)					      \

	      tag = TAG_none;						      \

	    else							      \

	      {								      \

		/* Other tag characters reset the tag parsing state (if the   \

		   current state is a temporary state) or are ignored (if     \

		   the current state is a stable one).  */		      \

		if (tag >= TAG_language)				      \

		  tag = TAG_none;					      \

	      }								      \

									      \

	    inptr += 4;							      \

	    continue;							      \

	  }								      \

									      \

	/* Non-tag characters reset the tag parsing state, if the current     \

	   state is a temporary state.  */				      \

	if (__glibc_unlikely (tag >= TAG_language))			      \

	  tag = TAG_none;						      \

      }									      \

									      \

    /* First see whether we can write the character using the currently	      \

       selected character set.  But ignore the selected character set if      \

       the current language tag shows different preferences.  */	      \

    if (set == ASCII_set)						      \

      {									      \

	/* Please note that the NUL byte is *not* matched if we are not	      \

	   currently using the ASCII charset.  This is because we must	      \

	   switch to the initial state whenever a NUL byte is written.  */    \

	if (ch <= 0x7f)							      \

	  {								      \

	    *outptr++ = ch;						      \

	    written = 1;						      \

									      \

	    /* At the beginning of a line, G2 designation is cleared.  */     \

	    if (var == iso2022jp2 && ch == 0x0a)			      \

	      set2 = UNSPECIFIED_set;					      \

	  }								      \

	else								      \

	  written = __UNKNOWN_10646_CHAR;				      \

      }									      \

    /* ISO-2022-JP recommends to encode the newline character always in	      \

       ASCII since this allows a context-free interpretation of the	      \

       characters at the beginning of the next line.  Otherwise it would      \

       have to be known whether the last line ended using ASCII or	      \

       JIS X 0201.  */							      \

    else if (set == JISX0201_Roman_set					      \

	     && (__builtin_expect (tag == TAG_none, 1)			      \

		 || tag == TAG_language_ja))				      \

      {									      \

	unsigned char buf[1];						      \

	written = ucs4_to_jisx0201 (ch, buf);				      \

	if (written != __UNKNOWN_10646_CHAR)				      \

	  {								      \

	    if (buf[0] > 0x20 && buf[0] < 0x80)				      \

	      {								      \

		*outptr++ = buf[0];					      \

		written = 1;						      \

	      }								      \

	    else							      \

	      written = __UNKNOWN_10646_CHAR;				      \

	  }								      \

      }									      \

    else if (set == JISX0201_Kana_set					      \

	     && (__builtin_expect (tag == TAG_none, 1)			      \

		 || tag == TAG_language_ja))				      \

      {									      \

	unsigned char buf[1];						      \

	written = ucs4_to_jisx0201 (ch, buf);				      \

	if (written != __UNKNOWN_10646_CHAR)				      \

	  {								      \

	    if (buf[0] > 0xa0 && buf[0] < 0xe0)				      \

	      {								      \

		*outptr++ = buf[0] - 0x80;				      \

		written = 1;						      \

	      }								      \

	    else							      \

	      written = __UNKNOWN_10646_CHAR;				      \

	  }								      \

      }									      \

    else								      \

      {									      \

	if ((set == JISX0208_1978_set || set == JISX0208_1983_set)	      \

	    && (__builtin_expect (tag == TAG_none, 1)			      \

		|| tag == TAG_language_ja))				      \

	  written = ucs4_to_jisx0208 (ch, outptr, outend - outptr);	      \

	else if (set == JISX0212_set					      \

		 && (__builtin_expect (tag == TAG_none, 1)		      \

		     || tag == TAG_language_ja))			      \

	  written = ucs4_to_jisx0212 (ch, outptr, outend - outptr);	      \

	else if (set == GB2312_set					      \

		 && (__builtin_expect (tag == TAG_none, 1)		      \

		     || tag == TAG_language_zh))			      \

	  written = ucs4_to_gb2312 (ch, outptr, outend - outptr);	      \

	else if (set == KSC5601_set					      \

		 && (__builtin_expect (tag == TAG_none, 1)		      \

		     || tag == TAG_language_ko))			      \

	  written = ucs4_to_ksc5601 (ch, outptr, outend - outptr);	      \

	else								      \

	  written = __UNKNOWN_10646_CHAR;				      \

									      \

	if (__glibc_unlikely (written == 0))				      \

	  {								      \

	    result = __GCONV_FULL_OUTPUT;				      \

	    break;							      \

	  }								      \

	else if (written != __UNKNOWN_10646_CHAR)			      \

	  outptr += written;						      \

      }									      \

									      \

    if (written == __UNKNOWN_10646_CHAR					      \

	&& __builtin_expect (tag == TAG_none, 1))			      \

      {									      \

	if (set2 == ISO88591_set)					      \

	  {								      \

	    if (ch >= 0x80 && ch <= 0xff)				      \

	      {								      \

		if (__glibc_unlikely (outptr + 3 > outend))		      \

		  {							      \

		    result = __GCONV_FULL_OUTPUT;			      \

		    break;						      \

		  }							      \

									      \

		*outptr++ = ESC;					      \

		*outptr++ = 'N';					      \

		*outptr++ = ch & 0x7f;					      \

		written = 3;						      \

	      }								      \

	  }								      \

	else if (set2 == ISO88597_set)					      \

	  {								      \

	    if (__glibc_likely (ch < 0xffff))				      \

	      {								      \

		const struct gap *rp = from_idx;			      \

									      \

		while (ch > rp->end)					      \

		  ++rp;							      \

		if (ch >= rp->start)					      \

		  {							      \

		    unsigned char res =					      \

		      iso88597_from_ucs4[ch - 0xa0 + rp->idx];		      \

		    if (res != '\0')					      \

		      {							      \

			if (__glibc_unlikely (outptr + 3 > outend))	      \

			  {						      \

			    result = __GCONV_FULL_OUTPUT;		      \

			    break;					      \

			  }						      \

									      \

			*outptr++ = ESC;				      \

			*outptr++ = 'N';				      \

			*outptr++ = res & 0x7f;				      \

			written = 3;					      \

		      }							      \

		  }							      \

	      }								      \

	  }								      \

      }									      \

									      \

    if (written == __UNKNOWN_10646_CHAR)				      \

      {									      \

	/* The attempts to use the currently selected character set	      \

	   failed, either because the language tag changed, or because	      \

	   the character requires a different character set, or because	      \

	   the character is unknown.					      \

	   The CJK character sets partially overlap when seen as subsets      \

	   of ISO 10646; therefore there is no single correct result.	      \

	   We use a preferrence order which depends on the language tag.  */  \

									      \

	if (ch <= 0x7f)							      \

	  {								      \

	    /* We must encode using ASCII.  First write out the		      \

	       escape sequence.  */					      \

	    if (__glibc_unlikely (outptr + 3 > outend))			      \

	      {								      \

		result = __GCONV_FULL_OUTPUT;				      \

		break;							      \

	      }								      \

									      \

	    *outptr++ = ESC;						      \

	    *outptr++ = '(';						      \

	    *outptr++ = 'B';						      \

	    set = ASCII_set;						      \

									      \

	    if (__glibc_unlikely (outptr + 1 > outend))			      \

	      {								      \

		result = __GCONV_FULL_OUTPUT;				      \

		break;							      \

	      }								      \

	    *outptr++ = ch;						      \

									      \

	    /* At the beginning of a line, G2 designation is cleared.  */     \

	    if (var == iso2022jp2 && ch == 0x0a)			      \

	      set2 = UNSPECIFIED_set;					      \

	  }								      \

	else								      \

	  {								      \

	    /* Now it becomes difficult.  We must search the other	      \

	       character sets one by one.  Use an ordered conversion	      \

	       list that depends on the current language tag.  */	      \

	    cvlist_t conversion_list;					      \

	    unsigned char buf[2];					      \

	    int res = __GCONV_ILLEGAL_INPUT;				      \

									      \

	    if (var == iso2022jp2)					      \

	      conversion_list = conversion_lists[tag >> 8];		      \

	    else							      \

	      conversion_list = CVLIST (japanese, 0, 0, 0, 0);		      \

									      \

	    do								      \

	      switch (CVLIST_FIRST (conversion_list))			      \

		{							      \

		case european:						      \

									      \

		  /* Try ISO 8859-1 upper half.   */			      \

		  if (ch >= 0x80 && ch <= 0xff)				      \

		    {							      \

		      if (set2 != ISO88591_set)				      \

			{						      \

			  if (__builtin_expect (outptr + 3 > outend, 0))      \

			    {						      \

			      res = __GCONV_FULL_OUTPUT;		      \

			      break;					      \

			    }						      \

			  *outptr++ = ESC;				      \

			  *outptr++ = '.';				      \

			  *outptr++ = 'A';				      \

			  set2 = ISO88591_set;				      \

			}						      \

									      \

		      if (__glibc_unlikely (outptr + 3 > outend))	      \

			{						      \

			  res = __GCONV_FULL_OUTPUT;			      \

			  break;					      \

			}						      \

		      *outptr++ = ESC;					      \

		      *outptr++ = 'N';					      \

		      *outptr++ = ch - 0x80;				      \

		      res = __GCONV_OK;					      \

		      break;						      \

		    }							      \

									      \

		  /* Try ISO 8859-7 upper half.  */			      \

		  if (__glibc_likely (ch < 0xffff))			      \

		    {							      \

		      const struct gap *rp = from_idx;			      \

									      \

		      while (ch > rp->end)				      \

			++rp;						      \

		      if (ch >= rp->start)				      \

			{						      \

			  unsigned char ch2 =				      \

			    iso88597_from_ucs4[ch - 0xa0 + rp->idx];	      \

			  if (ch2 != '\0')				      \

			    {						      \

			      if (set2 != ISO88597_set)			      \

				{					      \

				  if (__builtin_expect (outptr + 3 > outend,  \

							0))		      \

				    {					      \

				      res = __GCONV_FULL_OUTPUT;	      \

				      break;				      \

				    }					      \

				  *outptr++ = ESC;			      \

				  *outptr++ = '.';			      \

				  *outptr++ = 'F';			      \

				  set2 = ISO88597_set;			      \

				}					      \

									      \

			      if (__builtin_expect (outptr + 3 > outend, 0))  \

				{					      \

				  res = __GCONV_FULL_OUTPUT;		      \

				  break;				      \

				}					      \

			      *outptr++ = ESC;				      \

			      *outptr++ = 'N';				      \

			      *outptr++ = ch2 - 0x80;			      \

			      res = __GCONV_OK;				      \

			      break;					      \

			    }						      \

			}						      \

		    }							      \

									      \

		  break;						      \

									      \

		case japanese:						      \

									      \

		  /* Try JIS X 0201 Roman.  */				      \

		  written = ucs4_to_jisx0201 (ch, buf);			      \

		  if (written != __UNKNOWN_10646_CHAR			      \

		      && buf[0] > 0x20 && buf[0] < 0x80)		      \

		    {							      \

		      if (set != JISX0201_Roman_set)			      \

			{						      \

			  if (__builtin_expect (outptr + 3 > outend, 0))      \

			    {						      \

			      res = __GCONV_FULL_OUTPUT;		      \

			      break;					      \

			    }						      \

			  *outptr++ = ESC;				      \

			  *outptr++ = '(';				      \

			  *outptr++ = 'J';				      \

			  set = JISX0201_Roman_set;			      \

			}						      \

									      \

		      if (__glibc_unlikely (outptr + 1 > outend))	      \

			{						      \

			  res = __GCONV_FULL_OUTPUT;			      \

			  break;					      \

			}						      \

		      *outptr++ = buf[0];				      \

		      res = __GCONV_OK;					      \

		      break;						      \

		    }							      \

									      \

		  /* Try JIS X 0208.  */				      \

		  written = ucs4_to_jisx0208 (ch, buf, 2);		      \

		  if (written != __UNKNOWN_10646_CHAR)			      \

		    {							      \

		      if (set != JISX0208_1983_set)			      \

			{						      \

			  if (__builtin_expect (outptr + 3 > outend, 0))      \

			    {						      \

			      res = __GCONV_FULL_OUTPUT;		      \

			      break;					      \

			    }						      \

			  *outptr++ = ESC;				      \

			  *outptr++ = '$';				      \

			  *outptr++ = 'B';				      \

			  set = JISX0208_1983_set;			      \

			}						      \

									      \

		      if (__glibc_unlikely (outptr + 2 > outend))	      \

			{						      \

			  res = __GCONV_FULL_OUTPUT;			      \

			  break;					      \

			}						      \

		      *outptr++ = buf[0];				      \

		      *outptr++ = buf[1];				      \

		      res = __GCONV_OK;					      \

		      break;						      \

		    }							      \

									      \

		  if (__glibc_unlikely (var == iso2022jp))		      \

		    /* Don't use the other Japanese character sets.  */	      \

		    break;						      \

									      \

		  /* Try JIS X 0212.  */				      \

		  written = ucs4_to_jisx0212 (ch, buf, 2);		      \

		  if (written != __UNKNOWN_10646_CHAR)			      \

		    {							      \

		      if (set != JISX0212_set)				      \

			{						      \

			  if (__builtin_expect (outptr + 4 > outend, 0))      \

			    {						      \

			      res = __GCONV_FULL_OUTPUT;		      \

			      break;					      \

			    }						      \

			  *outptr++ = ESC;				      \

			  *outptr++ = '$';				      \

			  *outptr++ = '(';				      \

			  *outptr++ = 'D';				      \

			  set = JISX0212_set;				      \

			}						      \

									      \