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/* Mapping tables for EUC-CN handling.
Copyright (C) 1998-2021 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 <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>
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