glibc/iconvdata/ibm930.c
Ulrich Drepper dbd10df75f Update.
2000-10-31  Ulrich Drepper  <drepper@redhat.com>

	* iconvdata/Makefile (modules): Add IBM856, IBM930, IBM933, IBM935,
	IBM937, IBM939, and IBM1046.
	(distribute): Add ibm856.c, ibm930.c, ibm933.c, ibm935.c, ibm937.c,
	ibm939.c, ibm1046.c, ibm856.h, ibm930.h, ibm933.h, ibm935.h, ibm937.h,
	ibm939.h, and ibm1046.h.
	* iconvdata/gconv-modules: Add entries for IBM856, IBM930, IBM933,
	IBM935, IBM937, IBM939, and IBM1046.
	Patches by Masahide Washizawa <washi@yamato.ibm.co.jp>.
2000-10-31 08:24:06 +00:00

271 lines
8.8 KiB
C

/* Conversion from and to IBM930.
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 "ibm930.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 "IBM930//"
#define FROM_LOOP from_ibm930
#define TO_LOOP to_ibm930
/* 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-930 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 = __ibm930sb_to_ucs4_idx; \
const struct gap *rp2 = __ibm930db_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 IBM930 table for single byte. */ \
while (ch > rp1->end) \
++rp1; \
\
if (__builtin_expect (rp1 == NULL, 0) \
|| __builtin_expect (ch < rp1->start, 0) \
|| (res = __ibm930sb_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 \
{ \
if (res == 0xa5) \
res = 0x5c; \
put32 (outptr, res); \
outptr += 4; \
++inptr; \
} \
} \
else if (curcs == db) \
{ \
/* Use the IBM930 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 = __ibm930db_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_ibm930sb_idx; \
const struct gap *rp2 = __ucs4_to_ibm930db_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_ibm930sb[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_ibm930db[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; \
} \
if (ch == 0x7e) \
*outptr++ = 0xa1; \
else if (ch == 0x5c) \
*outptr++ = 0x5b; \
else \
*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>