mirror of git://sourceware.org/git/glibc.git
147 lines
4.7 KiB
C
147 lines
4.7 KiB
C
/* Mapping tables for EUC-CN handling.
|
|
Copyright (C) 1998-2017 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 <gb2312.h>
|
|
#include <stdint.h>
|
|
|
|
/* Definitions used in the body of the `gconv' function. */
|
|
#define CHARSET_NAME "EUC-CN//"
|
|
#define FROM_LOOP from_euc_cn
|
|
#define TO_LOOP to_euc_cn
|
|
#define DEFINE_INIT 1
|
|
#define DEFINE_FINI 1
|
|
#define MIN_NEEDED_FROM 1
|
|
#define MAX_NEEDED_FROM 2
|
|
#define MIN_NEEDED_TO 4
|
|
#define ONE_DIRECTION 0
|
|
|
|
|
|
/* First define the conversion function from EUC-CN 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 <= 0x7f) \
|
|
++inptr; \
|
|
else \
|
|
if ((__builtin_expect (ch <= 0xa0, 0) && ch != 0x8e && ch != 0x8f) \
|
|
|| __builtin_expect (ch > 0xfe, 0)) \
|
|
{ \
|
|
/* This is illegal. */ \
|
|
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* Two or more byte character. First test whether the \
|
|
next byte is also available. */ \
|
|
const unsigned char *endp; \
|
|
\
|
|
if (__glibc_unlikely (inptr + 1 >= inend)) \
|
|
{ \
|
|
/* The second character is not available. Store \
|
|
the intermediate result. */ \
|
|
result = __GCONV_INCOMPLETE_INPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
ch = inptr[1]; \
|
|
\
|
|
/* All second bytes of a multibyte character must be >= 0xa1. */ \
|
|
if (__glibc_unlikely (ch < 0xa1)) \
|
|
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
|
|
\
|
|
/* This is code set 1: GB 2312-80. */ \
|
|
endp = inptr; \
|
|
\
|
|
ch = gb2312_to_ucs4 (&endp, 2, 0x80); \
|
|
if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR)) \
|
|
{ \
|
|
/* This is an illegal character. */ \
|
|
STANDARD_FROM_LOOP_ERR_HANDLER (2); \
|
|
} \
|
|
\
|
|
inptr += 2; \
|
|
} \
|
|
\
|
|
put32 (outptr, ch); \
|
|
outptr += 4; \
|
|
}
|
|
#define LOOP_NEED_FLAGS
|
|
#define ONEBYTE_BODY \
|
|
{ \
|
|
if (c < 0x80) \
|
|
return c; \
|
|
else \
|
|
return WEOF; \
|
|
}
|
|
#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 <= L'\x7f') \
|
|
/* It's plain ASCII. */ \
|
|
*outptr++ = (unsigned char) ch; \
|
|
else \
|
|
{ \
|
|
size_t found; \
|
|
\
|
|
found = ucs4_to_gb2312 (ch, outptr, outend - outptr); \
|
|
if (__builtin_expect (found, 1) != 0) \
|
|
{ \
|
|
if (__builtin_expect (found, 0) == __UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
UNICODE_TAG_HANDLER (ch, 4); \
|
|
\
|
|
/* Illegal character. */ \
|
|
STANDARD_TO_LOOP_ERR_HANDLER (4); \
|
|
} \
|
|
\
|
|
/* It's a GB 2312 character, adjust it for EUC-CN. */ \
|
|
*outptr++ += 0x80; \
|
|
*outptr++ += 0x80; \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* We ran out of space. */ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
} \
|
|
inptr += 4; \
|
|
}
|
|
#define LOOP_NEED_FLAGS
|
|
#include <iconv/loop.c>
|
|
|
|
|
|
/* Now define the toplevel functions. */
|
|
#include <iconv/skeleton.c>
|