summary refs log tree commit diff
path: root/iconvdata/ibm943.c
blob: 2819e25d7416efd5b4ec54941bfa5377ee8470b9 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
/* Conversion from and to IBM943.
   Copyright (C) 2000, 2001 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 "ibm943.h"

#ifndef TRUE
#define TRUE  1
#define FALSE 0
#endif

#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 *rp1 = __ibm943sb_to_ucs4_idx;			      \
    const struct gap *rp2 = __ibm943db_to_ucs4_idx;			      \
    uint32_t ch = *inptr;						      \
    uint32_t res;							      \
									      \
    if (__builtin_expect (ch >= 0xffff, 0))				      \
      {									      \
	rp1 = NULL;							      \
	rp2 = NULL;							      \
      }									      \
    else if (__builtin_expect (ch, 0) == 0x80				      \
	     || __builtin_expect (ch, 0) == 0xa0			      \
	     || __builtin_expect (ch, 0) == 0xfd			      \
	     || __builtin_expect (ch, 0) == 0xfe			      \
	     || __builtin_expect (ch, 0) == 0xff)			      \
      {									      \
	/* This is an illegal character.  */				      \
	if (! ignore_errors_p ())					      \
	  {								      \
	    result = __GCONV_ILLEGAL_INPUT;				      \
	    break;							      \
	  }								      \
      }									      \
    else								      \
      {									      \
	while (ch > rp1->end)						      \
	  ++rp1;							      \
      }									      \
									      \
    /* Use the IBM943 table for single byte.  */			      \
    if (__builtin_expect (rp1 == NULL, 0)				      \
	|| __builtin_expect (ch < rp1->start, 0)			      \
	|| (res = __ibm943sb_to_ucs4[ch + rp1->idx],			      \
	__builtin_expect (res, '\1') == 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.  */			      \
	    if (! ignore_errors_p ())					      \
	      {								      \
		result = __GCONV_ILLEGAL_INPUT;				      \
		break;							      \
	      }								      \
	      ++*irreversible;						      \
	      inptr += 2;						      \
	      continue;							      \
	  }								      \
	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
#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);						      \
    uint16_t 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.  */			      \
	    if (! ignore_errors_p ())					      \
	      {								      \
		result = __GCONV_ILLEGAL_INPUT;				      \
		break;							      \
	      }								      \
	    ++*irreversible;						      \
	  }								      \
      }									      \
    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>