mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-21 20:40:05 +00:00
117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
/* Generic conversion to and from 8bit charsets,
|
|
converting from UCS using gaps.
|
|
Copyright (C) 1997-2023 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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>
|