/* Mapping tables for EUC-JP handling.

   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 <dlfcn.h>

#include <stdint.h>

#include <gconv.h>

#include <jis0201.h>

#include <jis0208.h>

#include <jis0212.h>

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

#define CHARSET_NAME		"EUC-JP//"

#define FROM_LOOP		from_euc_jp

#define TO_LOOP			to_euc_jp

#define DEFINE_INIT		1

#define DEFINE_FINI		1

#define MIN_NEEDED_FROM		1

#define MAX_NEEDED_FROM		3

#define MIN_NEEDED_TO		4

#define ONE_DIRECTION		0

/* First define the conversion function from EUC-JP 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 < 0x8e || (ch >= 0x90 && ch <= 0x9f))			      \

      ++inptr;								      \

    else if (ch == 0xff)						      \

      {									      \

	/* This is illegal.  */						      \

	STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \

      }									      \

    else								      \

      {									      \

	/* Two or more byte character.  First test whether the next	      \

	   byte is also available.  */					      \

	int ch2;							      \

									      \

	if (__glibc_unlikely (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 (__glibc_unlikely (ch2 < 0xa1))				      \

	  STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \

									      \

	if (ch == 0x8e)							      \

	  {								      \

	    /* This is code set 2: half-width katakana.  */		      \

	    ch = jisx0201_to_ucs4 (ch2);				      \

	    if (__builtin_expect (ch, 0) == __UNKNOWN_10646_CHAR)	      \

	      STANDARD_FROM_LOOP_ERR_HANDLER (1);			      \

									      \

	    inptr += 2;							      \

	  }								      \

	else								      \

	  {								      \

	    const unsigned char *endp;					      \

									      \

	    if (ch == 0x8f)						      \

	      {								      \

		/* This is code set 3: JIS X 0212-1990.  */		      \

		endp = inptr + 1;					      \

									      \

		ch = jisx0212_to_ucs4 (&endp, inend - endp, 0x80);	      \

	      }								      \

	    else							      \

	      {								      \

		/* This is code set 1: JIS X 0208.  */			      \

		endp = inptr;						      \

									      \

		ch = jisx0208_to_ucs4 (&endp, inend - inptr, 0x80);	      \

	      }								      \

									      \

	    if (__builtin_expect (ch, 1) == 0)				      \

	      {								      \

		/* Not enough input available.  */			      \

		result = __GCONV_INCOMPLETE_INPUT;			      \

		break;							      \

	      }								      \

	    if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR))		      \

	      /* Illegal character.  */					      \

	      STANDARD_FROM_LOOP_ERR_HANDLER (1);			      \

									      \

	    inptr = endp;						      \

	  }								      \

      }									      \

									      \

    put32 (outptr, ch);							      \

    outptr += 4;							      \

  }

#define ONEBYTE_BODY \

  {									      \

    if (c < 0x8e || (c >= 0x90 && c <= 0x9f))				      \

      return c;								      \

    else								      \

      return WEOF;							      \

  }

#define LOOP_NEED_FLAGS

#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 < 0x8e || (ch >= 0x90 && ch <= 0x9f))			      \

      /* It's plain ASCII or C1.  */					      \

      *outptr++ = ch;							      \

    else if (ch == 0xa5)						      \

      /* YEN sign => backslash  */					      \

      *outptr++ = 0x5c;							      \

    else if (ch == 0x203e)						      \

      /* overscore => asciitilde */					      \

      *outptr++ = 0x7e;							      \

    else								      \

      {									      \

	/* Try the JIS character sets.  */				      \

	size_t found;							      \

									      \

	/* See whether we have room for at least two characters.  */	      \

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

	  {								      \

	    result = __GCONV_FULL_OUTPUT;				      \

	    break;							      \

	  }								      \

									      \

	found = ucs4_to_jisx0201 (ch, outptr + 1);			      \

	if (found != __UNKNOWN_10646_CHAR)				      \

	  {								      \

	    /* Yes, it's a JIS 0201 character.  Store the shift byte.  */     \

	    *outptr = 0x8e;						      \

	    outptr += 2;						      \

	  }								      \

	else								      \

	  {								      \

	    /* No JIS 0201 character.  */				      \

	    found = ucs4_to_jisx0208 (ch, outptr, 2);			      \

	    /* Please note that we always have enough room for the output. */ \

	    if (found != __UNKNOWN_10646_CHAR)				      \

	      {								      \

		/* It's a JIS 0208 character, adjust it for EUC-JP.  */	      \

		*outptr++ += 0x80;					      \

		*outptr++ += 0x80;					      \

	      }								      \

	    else							      \

	      {								      \

		/* No JIS 0208 character.  */				      \

		found = ucs4_to_jisx0212 (ch, outptr + 1,		      \

					  outend - outptr - 1);		      \

		  							      \

		if (__builtin_expect (found, 1) == 0)			      \

		  {							      \

		    /* We ran out of space.  */				      \

		    result = __GCONV_FULL_OUTPUT;			      \

		    break;						      \

		  }							      \

		else if (__builtin_expect (found, 0) != __UNKNOWN_10646_CHAR) \

		  {							      \

		    /* It's a JIS 0212 character, adjust it for EUC-JP.  */   \

		    *outptr++ = 0x8f;					      \

		    *outptr++ += 0x80;					      \

		    *outptr++ += 0x80;					      \

		  }							      \

		else							      \

		  {							      \

		    UNICODE_TAG_HANDLER (ch, 4);			      \

									      \

		    /* Illegal character.  */				      \

		    STANDARD_TO_LOOP_ERR_HANDLER (4);			      \

		  }							      \

	      }								      \

	  }								      \

      }									      \

									      \

    inptr += 4;								      \

  }

#define LOOP_NEED_FLAGS

#include <iconv/loop.c>

/* Now define the toplevel functions.  */

#include <iconv/skeleton.c>