mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-24 02:03:35 +08:00
264 lines
8.6 KiB
C
264 lines
8.6 KiB
C
|
/* Conversion from and to IBM933.
|
||
|
|
Copyright (C) 2000 Free Software Foundation, Inc.
|
||
|
|
This file is part of the GNU C Library.
|
||
|
|
Contributed by Masahide Washizawa <washi@yamato.ibm.co.jp>, 2000.
|
||
|
|
|
||
|
|
The GNU C Library is free software; you can redistribute it and/or
|
||
|
|
modify it under the terms of the GNU Library General Public License as
|
||
|
|
published by the Free Software Foundation; either version 2 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
|
||
|
|
Library General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Library General Public
|
||
|
|
License along with the GNU C Library; see the file COPYING.LIB. 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 <wchar.h>
|
||
|
|
#include <byteswap.h>
|
||
|
|
#include "ibm933.h"
|
||
|
|
|
||
|
|
/* The shift sequences for this charset (it does not use ESC). */
|
||
|
|
#define SI 0x0F /* Shift In, host code to turn DBCS off. */
|
||
|
|
#define SO 0x0E /* Shift Out, host code to turn DBCS on. */
|
||
|
|
|
||
|
|
/* Definitions used in the body of the `gconv' function. */
|
||
|
|
#define CHARSET_NAME "IBM933//"
|
||
|
|
#define FROM_LOOP from_ibm933
|
||
|
|
#define TO_LOOP to_ibm933
|
||
|
|
|
||
|
|
/* Definitions of initialization and destructor function. */
|
||
|
|
#define DEFINE_INIT 1
|
||
|
|
#define DEFINE_FINI 1
|
||
|
|
|
||
|
|
#define MIN_NEEDED_FROM 1
|
||
|
|
#define MIN_NEEDED_TO 4
|
||
|
|
|
||
|
|
/* Current codeset type. */
|
||
|
|
enum
|
||
|
|
{
|
||
|
|
init = 0,
|
||
|
|
sb,
|
||
|
|
db
|
||
|
|
};
|
||
|
|
|
||
|
|
/* First, define the conversion function from IBM-933 to UCS4. */
|
||
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
|
||
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
|
||
|
|
#define INIT_PARAMS int curcs = init;
|
||
|
|
#define LOOPFCT FROM_LOOP
|
||
|
|
#define BODY \
|
||
|
|
{ \
|
||
|
|
uint32_t ch = *inptr; \
|
||
|
|
uint32_t res; \
|
||
|
|
const struct gap *rp1 = __ibm933sb_to_ucs4_idx; \
|
||
|
|
const struct gap *rp2 = __ibm933db_to_ucs4_idx; \
|
||
|
|
\
|
||
|
|
if (__builtin_expect (ch, 0) == SO) \
|
||
|
|
{ \
|
||
|
|
if (__builtin_expect (inptr + 1 >= inend, 0)) \
|
||
|
|
{ \
|
||
|
|
result = __GCONV_INCOMPLETE_INPUT; \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
/* Shift OUT, change to DBCS converter. */ \
|
||
|
|
if (curcs == db) \
|
||
|
|
{ \
|
||
|
|
result = __GCONV_ILLEGAL_INPUT; \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
curcs = db; \
|
||
|
|
++inptr; \
|
||
|
|
ch = *inptr; \
|
||
|
|
} \
|
||
|
|
else if (__builtin_expect (ch, 0) == SI) \
|
||
|
|
{ \
|
||
|
|
if (__builtin_expect (inptr + 1 >= inend, 0)) \
|
||
|
|
{ \
|
||
|
|
result = __GCONV_INCOMPLETE_INPUT; \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
/* Shift IN, change to SBCS converter. */ \
|
||
|
|
if (curcs == sb) \
|
||
|
|
{ \
|
||
|
|
result = __GCONV_ILLEGAL_INPUT; \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
curcs = sb; \
|
||
|
|
++inptr; \
|
||
|
|
ch = *inptr; \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
if (curcs == sb || curcs == init) \
|
||
|
|
{ \
|
||
|
|
/* Use the IBM933 table for single byte. */ \
|
||
|
|
while (ch > rp1->end) \
|
||
|
|
++rp1; \
|
||
|
|
\
|
||
|
|
if (__builtin_expect (rp1 == NULL, 0) \
|
||
|
|
|| __builtin_expect (ch < rp1->start, 0) \
|
||
|
|
|| (res = __ibm933sb_to_ucs4[ch + rp1->idx], \
|
||
|
|
__builtin_expect (res, L'\1') == L'\0' && ch != '\0')) \
|
||
|
|
{ \
|
||
|
|
/* This is an illegal character. */ \
|
||
|
|
if (! ignore_errors_p ()) \
|
||
|
|
{ \
|
||
|
|
result = __GCONV_ILLEGAL_INPUT; \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
++*irreversible; \
|
||
|
|
++inptr; \
|
||
|
|
continue; \
|
||
|
|
} \
|
||
|
|
else \
|
||
|
|
{ \
|
||
|
|
put32 (outptr, res); \
|
||
|
|
outptr += 4; \
|
||
|
|
++inptr; \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
else if (curcs == db) \
|
||
|
|
{ \
|
||
|
|
/* Use the IBM933 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 = __ibm933db_to_ucs4[ch + rp2->idx], \
|
||
|
|
__builtin_expect (res, L'\1') == L'\0' && ch != '\0')) \
|
||
|
|
{ \
|
||
|
|
/* This is an illegal character. */ \
|
||
|
|
if (! ignore_errors_p ()) \
|
||
|
|
{ \
|
||
|
|
result = __GCONV_ILLEGAL_INPUT; \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
++*irreversible; \
|
||
|
|
inptr += 2; \
|
||
|
|
continue; \
|
||
|
|
} \
|
||
|
|
else \
|
||
|
|
{ \
|
||
|
|
put32 (outptr, res); \
|
||
|
|
outptr += 4; \
|
||
|
|
inptr += 2; \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
}
|
||
|
|
#define LOOP_NEED_FLAGS
|
||
|
|
#include <iconv/loop.c>
|
||
|
|
|
||
|
|
/* Next, define the other direction. */
|
||
|
|
#define MIN_NEEDED_INPUT MIN_NEEDED_TO
|
||
|
|
#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
|
||
|
|
#define INIT_PARAMS int curcs = init;
|
||
|
|
#define LOOPFCT TO_LOOP
|
||
|
|
#define BODY \
|
||
|
|
{ \
|
||
|
|
uint32_t ch = get32 (inptr); \
|
||
|
|
const struct gap *rp1 = __ucs4_to_ibm933sb_idx; \
|
||
|
|
const struct gap *rp2 = __ucs4_to_ibm933db_idx; \
|
||
|
|
const char *cp; \
|
||
|
|
\
|
||
|
|
if (__builtin_expect (ch, 0) >= 0xffff) \
|
||
|
|
{ \
|
||
|
|
rp1 = NULL; \
|
||
|
|
rp2 = NULL; \
|
||
|
|
} \
|
||
|
|
else \
|
||
|
|
while (ch > rp1->end) \
|
||
|
|
++rp1; \
|
||
|
|
\
|
||
|
|
/* Use the UCS4 table for single byte. */ \
|
||
|
|
if (__builtin_expect (rp1 == NULL, 0) \
|
||
|
|
|| __builtin_expect (ch < rp1->start, 0) \
|
||
|
|
|| (cp = __ucs4_to_ibm933sb[ch + rp1->idx], \
|
||
|
|
__builtin_expect (cp[0], L'\1') == L'\0' && ch != '\0')) \
|
||
|
|
{ \
|
||
|
|
/* Use the UCS4 table for double byte. */ \
|
||
|
|
while (ch > rp2->end) \
|
||
|
|
++rp2; \
|
||
|
|
\
|
||
|
|
if (__builtin_expect (rp2 == NULL, 0) \
|
||
|
|
|| __builtin_expect (ch < rp2->start, 0) \
|
||
|
|
|| (cp = __ucs4_to_ibm933db[ch + rp2->idx], \
|
||
|
|
__builtin_expect (cp[0], L'\1')==L'\0' && ch != '\0')) \
|
||
|
|
{ \
|
||
|
|
/* This is an illegal character. */ \
|
||
|
|
if (! ignore_errors_p ()) \
|
||
|
|
{ \
|
||
|
|
result = __GCONV_ILLEGAL_INPUT; \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
++*irreversible; \
|
||
|
|
} \
|
||
|
|
else \
|
||
|
|
{ \
|
||
|
|
if (curcs == init || curcs == sb) \
|
||
|
|
{ \
|
||
|
|
if (__builtin_expect (outptr+1 > outend, 0)) \
|
||
|
|
{ \
|
||
|
|
result = __GCONV_FULL_OUTPUT; \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
*outptr++ = SO; \
|
||
|
|
curcs = db; \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
if (__builtin_expect (outptr + 2 > outend, 0)) \
|
||
|
|
{ \
|
||
|
|
result = __GCONV_FULL_OUTPUT; \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
*outptr++ = cp[0]; \
|
||
|
|
*outptr++ = cp[1]; \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
else \
|
||
|
|
{ \
|
||
|
|
if (curcs == db) \
|
||
|
|
{ \
|
||
|
|
if (__builtin_expect (outptr + 1 > outend, 0)) \
|
||
|
|
{ \
|
||
|
|
result = __GCONV_FULL_OUTPUT; \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
*outptr++ = SI; \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
if (__builtin_expect (outptr + 1 > outend, 0)) \
|
||
|
|
{ \
|
||
|
|
result = __GCONV_FULL_OUTPUT; \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
*outptr++ = cp[0]; \
|
||
|
|
curcs = sb; \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
/* 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>
|