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/* Conversion from and to IBM943.
Copyright (C) 2000-2002 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <dlfcn.h>
#include <stdint.h>
#include <stdbool.h>
#include "ibm943.h"
#define FROM 0
#define TO 1
/* Definitions used in the body of the `gconv' function. */
#define CHARSET_NAME "IBM943//"
#define FROM_LOOP from_ibm943
#define TO_LOOP to_ibm943
/* 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-943 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 = __ibm943db_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 IBM943 table for single byte. */ \
if (__builtin_expect (ch > 0xdf, 0) \
|| (res = __ibm943sb_to_ucs4[ch], \
__builtin_expect (res == 0, 0) && ch != 0)) \
{ \
/* Use the IBM943 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 = __ibm943db_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 == 0x1c) \
res = 0x1a; \
else if (res == 0x7f) \
res = 0x1c; \
else if (res == 0xa5) \
res = 0x5c; \
else if (res == 0x203e) \
res = 0x7e; \
else if (res == 0x1a) \
res = 0x7f; \
put32 (outptr, res); \
outptr += 4; \
inptr++; \
} \
}
#define LOOP_NEED_FLAGS
#define ONEBYTE_BODY \
{ \
if (c == 0x80 || c == 0xa0 || c >= 0xe0) \
return WEOF; \
uint32_t res = __ibm943sb_to_ucs4[c]; \
if (res == 0 && c != 0) \
return WEOF; \
if (res == 0x1c) \
res = 0x1a; \
else if (res == 0x7f) \
res = 0x1c; \
else if (res == 0xa5) \
res = 0x5c; \
else if (res == 0x203e) \
res = 0x7e; \
else if (res == 0x1a) \
res = 0x7f; \
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_ibm943sb_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_ibm943sb[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_ibm943db) >> 1) \
/ sizeof (__ucs4_to_ibm943db[0][FROM]); \
pccode = ch; \
while (low <= high) \
{ \
i = (low + high) >> 1; \
if (pccode < __ucs4_to_ibm943db[i][FROM]) \
high = i - 1; \
else if (pccode > __ucs4_to_ibm943db[i][FROM]) \
low = i + 1; \
else \
{ \
pccode = __ucs4_to_ibm943db[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>
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