99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
/* Generic conversion to and from 8bit charsets,
|
|
converting from UCS using gaps.
|
|
Copyright (C) 1997, 1998 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 <stdint.h>
|
|
|
|
struct gap
|
|
{
|
|
uint16_t start;
|
|
uint16_t end;
|
|
int16_t idx;
|
|
};
|
|
|
|
/* Now we can include the tables. */
|
|
#include TABLES
|
|
|
|
|
|
#define FROM_LOOP from_gap
|
|
#define TO_LOOP to_gap
|
|
#define DEFINE_INIT 1
|
|
#define DEFINE_FINI 1
|
|
#define MIN_NEEDED_FROM 1
|
|
#define MIN_NEEDED_TO 4
|
|
|
|
|
|
/* First define the conversion function from the 8bit charset to UCS4. */
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
|
#define LOOPFCT FROM_LOOP
|
|
#define BODY \
|
|
{ \
|
|
uint32_t ch = to_ucs4[*inptr]; \
|
|
\
|
|
if (HAS_HOLES && ch == L'\0' && *inptr != '\0') \
|
|
{ \
|
|
/* This is an illegal character. */ \
|
|
result = GCONV_ILLEGAL_INPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
*((uint32_t *) outptr)++ = ch; \
|
|
++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 \
|
|
{ \
|
|
const struct gap *rp = from_idx; \
|
|
uint32_t ch = *((uint32_t *) inptr); \
|
|
unsigned char res; \
|
|
\
|
|
while (ch > rp->end) \
|
|
++rp; \
|
|
if (ch < rp->start) \
|
|
{ \
|
|
/* This is an illegal character. */ \
|
|
result = GCONV_ILLEGAL_INPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
res = from_ucs4[ch + rp->idx]; \
|
|
if (ch != 0 && res == '\0') \
|
|
{ \
|
|
/* This is an illegal character. */ \
|
|
result = GCONV_ILLEGAL_INPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
*outptr++ = res; \
|
|
inptr += 4; \
|
|
}
|
|
#include <iconv/loop.c>
|
|
|
|
|
|
/* Now define the toplevel functions. */
|
|
#include <iconv/skeleton.c>
|