glibc/iconvdata/iso8859-1.c

/* Conversion to and from ISO 8859-1.
   Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

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

/* Definitions used in the body of the `gconv' function.  */
#define CHARSET_NAME		"ISO-8859-1//"
#define FROM_LOOP		from_iso8859_1
#define TO_LOOP			to_iso8859_1
#define DEFINE_INIT		1
#define DEFINE_FINI		1
#define MIN_NEEDED_FROM		1
#define MIN_NEEDED_TO		4

/* First define the conversion function from ISO 8859-1 to UCS4.  */
#define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
#define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
#define LOOPFCT			FROM_LOOP
#define BODY \
  *((uint32_t *) outptr)++ = *inptr++;
#include <iconv/loop.c>


/* Next, define the other direction.  */
#define MIN_NEEDED_INPUT	MIN_NEEDED_TO
#define MIN_NEEDED_OUTPUT	MIN_NEEDED_FROM
#define LOOPFCT			TO_LOOP
#define BODY \
  {									      \
    uint32_t ch = *((uint32_t *) inptr);				      \
    if (__builtin_expect (ch, 0) > 0xff)				      \
      {									      \
	/* We have an illegal character.  */				      \
	if (step_data->__trans.__trans_fct != NULL)			      \
	  {								      \
	    result = DL_CALL_FCT (step_data->__trans.__trans_fct,	      \
				  (step, step_data, *inptrp, &inptr, inend,   \
				   *outptrp, &outptr, outend, irreversible)); \
	    if (result != __GCONV_OK)					      \
	      break;							      \
	  }								      \
	else if (! ignore_errors_p ())					      \
	  {								      \
	    result = __GCONV_ILLEGAL_INPUT;				      \
	    break;							      \
	  }								      \
	else								      \
	  {								      \
	    inptr += 4;							      \
	    ++*irreversible;						      \
	  }								      \
	continue;							      \
      }									      \
    else								      \
      *outptr++ = (unsigned char) ch;					      \
    inptr += 4;								      \
  }
#define LOOP_NEED_FLAGS
#include <iconv/loop.c>


/* Now define the toplevel functions.  */
#include <iconv/skeleton.c>