213 lines
7.1 KiB
C
213 lines
7.1 KiB
C
/* Conversion from and to IBM932.
|
|
Copyright (C) 2000-2013 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Masahide Washizawa <washi@jp.ibm.com>, 2000.
|
|
|
|
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 <stdint.h>
|
|
#include <stdbool.h>
|
|
#include "ibm932.h"
|
|
|
|
#define FROM 0
|
|
#define TO 1
|
|
|
|
/* Definitions used in the body of the `gconv' function. */
|
|
#define CHARSET_NAME "IBM932//"
|
|
#define FROM_LOOP from_ibm932
|
|
#define TO_LOOP to_ibm932
|
|
|
|
/* Definitions of initialization and destructor function. */
|
|
#define DEFINE_INIT 1
|
|
#define DEFINE_FINI 1
|
|
|
|
#define MIN_NEEDED_FROM 1
|
|
#define MAX_NEEDED_FROM 2
|
|
#define MIN_NEEDED_TO 4
|
|
|
|
/* First, define the conversion function from IBM-932 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 \
|
|
{ \
|
|
const struct gap *rp2 = __ibm932db_to_ucs4_idx; \
|
|
uint32_t ch = *inptr; \
|
|
uint32_t res; \
|
|
\
|
|
if (__builtin_expect (ch == 0x80, 0) \
|
|
|| __builtin_expect (ch == 0xa0, 0) \
|
|
|| __builtin_expect (ch == 0xfd, 0) \
|
|
|| __builtin_expect (ch == 0xfe, 0) \
|
|
|| __builtin_expect (ch == 0xff, 0)) \
|
|
{ \
|
|
/* This is an illegal character. */ \
|
|
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
|
|
} \
|
|
\
|
|
/* Use the IBM932 table for single byte. */ \
|
|
res = __ibm932sb_to_ucs4[ch]; \
|
|
if (__builtin_expect (res == 0, 0) && ch != 0) \
|
|
{ \
|
|
/* Use the IBM932 table for double byte. */ \
|
|
if (__builtin_expect (inptr + 1 >= inend, 0)) \
|
|
{ \
|
|
/* The second character is not available. \
|
|
Store the intermediate result. */ \
|
|
result = __GCONV_INCOMPLETE_INPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
ch = (ch * 0x100) + inptr[1]; \
|
|
while (ch > rp2->end) \
|
|
++rp2; \
|
|
\
|
|
if (__builtin_expect (rp2 == NULL, 0) \
|
|
|| __builtin_expect (ch < rp2->start, 0) \
|
|
|| (res = __ibm932db_to_ucs4[ch + rp2->idx], \
|
|
__builtin_expect (res, '\1') == 0 && ch !=0)) \
|
|
{ \
|
|
/* This is an illegal character. */ \
|
|
STANDARD_FROM_LOOP_ERR_HANDLER (2); \
|
|
} \
|
|
else \
|
|
{ \
|
|
put32 (outptr, res); \
|
|
outptr += 4; \
|
|
inptr += 2; \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
if (res == 0xa5) \
|
|
res = 0x5c; \
|
|
else if (res == 0x203e) \
|
|
res = 0x7e; \
|
|
put32 (outptr, res); \
|
|
outptr += 4; \
|
|
inptr++; \
|
|
} \
|
|
}
|
|
#define LOOP_NEED_FLAGS
|
|
#define ONEBYTE_BODY \
|
|
{ \
|
|
if (c == 0x80 || c == 0xa0 || c >= 0xfd) \
|
|
return WEOF; \
|
|
uint32_t res = __ibm932sb_to_ucs4[c]; \
|
|
if (res == 0 && c != 0) \
|
|
return WEOF; \
|
|
if (res == 0xa5) \
|
|
res = 0x5c; \
|
|
else if (res == 0x203e) \
|
|
res = 0x7e; \
|
|
return res; \
|
|
}
|
|
#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 \
|
|
{ \
|
|
const struct gap *rp = __ucs4_to_ibm932sb_idx; \
|
|
unsigned char sc; \
|
|
uint32_t ch = get32 (inptr); \
|
|
bool found = true; \
|
|
uint32_t i; \
|
|
uint32_t low; \
|
|
uint32_t high; \
|
|
uint16_t pccode; \
|
|
\
|
|
if (__builtin_expect (ch >= 0xffff, 0)) \
|
|
{ \
|
|
UNICODE_TAG_HANDLER (ch, 4); \
|
|
rp = NULL; \
|
|
} \
|
|
else \
|
|
while (ch > rp->end) \
|
|
++rp; \
|
|
\
|
|
/* Use the UCS4 table for single byte. */ \
|
|
if (__builtin_expect (rp == NULL, 0) \
|
|
|| __builtin_expect (ch < rp->start, 0) \
|
|
|| (sc = __ucs4_to_ibm932sb[ch + rp->idx], \
|
|
__builtin_expect (sc, '\1') == '\0' && ch != L'\0')) \
|
|
{ \
|
|
\
|
|
/* Use the UCS4 table for double byte. */ \
|
|
found = false; \
|
|
low = 0; \
|
|
high = (sizeof (__ucs4_to_ibm932db) >> 1) \
|
|
/ sizeof (__ucs4_to_ibm932db[0][FROM]); \
|
|
pccode = ch; \
|
|
if (__builtin_expect (rp != NULL, 1)) \
|
|
while (low < high) \
|
|
{ \
|
|
i = (low + high) >> 1; \
|
|
if (pccode < __ucs4_to_ibm932db[i][FROM]) \
|
|
high = i; \
|
|
else if (pccode > __ucs4_to_ibm932db[i][FROM]) \
|
|
low = i + 1; \
|
|
else \
|
|
{ \
|
|
pccode = __ucs4_to_ibm932db[i][TO]; \
|
|
found = true; \
|
|
break; \
|
|
} \
|
|
} \
|
|
if (found) \
|
|
{ \
|
|
if (__builtin_expect (outptr + 2 > outend, 0)) \
|
|
{ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = pccode >> 8 & 0xff; \
|
|
*outptr++ = pccode & 0xff; \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* This is an illegal character. */ \
|
|
STANDARD_TO_LOOP_ERR_HANDLER (4); \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
if (__builtin_expect (outptr + 1 > outend, 0)) \
|
|
{ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
if (ch == 0x5c) \
|
|
*outptr++ = 0x5c; \
|
|
else if (ch == 0x7e) \
|
|
*outptr++ = 0x7e; \
|
|
else \
|
|
*outptr++ = sc; \
|
|
} \
|
|
\
|
|
/* Now that we wrote the output increment the input pointer. */ \
|
|
inptr += 4; \
|
|
}
|
|
#define LOOP_NEED_FLAGS
|
|
#include <iconv/loop.c>
|
|
|
|
/* Now define the toplevel functions. */
|
|
#include <iconv/skeleton.c>
|