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/* Generic conversion to and from 8bit charsets,
converting from UCS using gaps.
Copyright (C) 1997-2021 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 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
<https://www.gnu.org/licenses/>. */
#include <dlfcn.h>
#include <stdint.h>
struct gap
{
uint16_t start;
uint16_t end;
int32_t idx;
};
/* Now we can include the tables. */
#include TABLES
#ifndef NONNUL
# define NONNUL(c) ((c) != '\0')
#endif
#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
#define ONE_DIRECTION 0
/* 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 && __builtin_expect (ch == L'\0', 0) && NONNUL (*inptr)) \
{ \
/* This is an illegal character. */ \
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
} \
else \
{ \
put32 (outptr, ch); \
outptr += 4; \
} \
\
++inptr; \
}
#define LOOP_NEED_FLAGS
#define ONEBYTE_BODY \
{ \
uint32_t ch = to_ucs4[c]; \
\
if (HAS_HOLES && __builtin_expect (ch == L'\0', 0) && NONNUL (c)) \
return WEOF; \
else \
return ch; \
}
#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 = get32 (inptr); \
unsigned char res; \
\
if (__glibc_unlikely (ch >= 0xffff)) \
{ \
UNICODE_TAG_HANDLER (ch, 4); \
rp = NULL; \
} \
else \
while (ch > rp->end) \
++rp; \
if (__builtin_expect (rp == NULL, 0) \
|| __builtin_expect (ch < rp->start, 0) \
|| (res = from_ucs4[ch + rp->idx], \
__builtin_expect (res, '\1') == '\0' && ch != 0)) \
{ \
/* This is an illegal character. */ \
STANDARD_TO_LOOP_ERR_HANDLER (4); \
} \
\
*outptr++ = res; \
inptr += 4; \
}
#define LOOP_NEED_FLAGS
#include <iconv/loop.c>
/* Now define the toplevel functions. */
#include <iconv/skeleton.c>
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