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[glibc.git] / iconvdata / ibm943.c
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1 /* Conversion from and to IBM943.
2 Copyright (C) 2000-2002, 2004 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Masahide Washizawa <washi@jp.ibm.com>, 2000.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 02111-1307 USA. */
21 #include <dlfcn.h>
22 #include <stdint.h>
23 #include <stdbool.h>
24 #include "ibm943.h"
26 #define FROM 0
27 #define TO 1
29 /* Definitions used in the body of the `gconv' function. */
30 #define CHARSET_NAME "IBM943//"
31 #define FROM_LOOP from_ibm943
32 #define TO_LOOP to_ibm943
34 /* Definitions of initialization and destructor function. */
35 #define DEFINE_INIT 1
36 #define DEFINE_FINI 1
38 #define MIN_NEEDED_FROM 1
39 #define MAX_NEEDED_FROM 2
40 #define MIN_NEEDED_TO 4
42 /* First, define the conversion function from IBM-943 to UCS4. */
43 #define MIN_NEEDED_INPUT MIN_NEEDED_FROM
44 #define MAX_NEEDED_INPUT MAX_NEEDED_FROM
45 #define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
46 #define LOOPFCT FROM_LOOP
47 #define BODY \
48 { \
49 const struct gap *rp2 = __ibm943db_to_ucs4_idx; \
50 uint32_t ch = *inptr; \
51 uint32_t res; \
53 if (__builtin_expect (ch == 0x80, 0) \
54 || __builtin_expect (ch == 0xa0, 0) \
55 || __builtin_expect (ch == 0xfd, 0) \
56 || __builtin_expect (ch == 0xfe, 0) \
57 || __builtin_expect (ch == 0xff, 0)) \
58 { \
59 /* This is an illegal character. */ \
60 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
61 } \
63 /* Use the IBM943 table for single byte. */ \
64 if (__builtin_expect (ch > 0xdf, 0) \
65 || (res = __ibm943sb_to_ucs4[ch], \
66 __builtin_expect (res == 0, 0) && ch != 0)) \
67 { \
68 /* Use the IBM943 table for double byte. */ \
69 if (__builtin_expect (inptr + 1 >= inend, 0)) \
70 { \
71 /* The second character is not available. \
72 Store the intermediate result. */ \
73 result = __GCONV_INCOMPLETE_INPUT; \
74 break; \
75 } \
77 ch = (ch * 0x100) + inptr[1]; \
78 while (ch > rp2->end) \
79 ++rp2; \
81 if (__builtin_expect (rp2 == NULL, 0) \
82 || __builtin_expect (ch < rp2->start, 0) \
83 || (res = __ibm943db_to_ucs4[ch + rp2->idx], \
84 __builtin_expect (res, '\1') == 0 && ch !=0)) \
85 { \
86 /* This is an illegal character. */ \
87 STANDARD_FROM_LOOP_ERR_HANDLER (2); \
88 } \
89 else \
90 { \
91 put32 (outptr, res); \
92 outptr += 4; \
93 inptr += 2; \
94 } \
95 } \
96 else \
97 { \
98 if (res == 0x1c) \
99 res = 0x1a; \
100 else if (res == 0x7f) \
101 res = 0x1c; \
102 else if (res == 0xa5) \
103 res = 0x5c; \
104 else if (res == 0x203e) \
105 res = 0x7e; \
106 else if (res == 0x1a) \
107 res = 0x7f; \
108 put32 (outptr, res); \
109 outptr += 4; \
110 inptr++; \
113 #define LOOP_NEED_FLAGS
114 #define ONEBYTE_BODY \
116 if (c == 0x80 || c == 0xa0 || c >= 0xe0) \
117 return WEOF; \
118 uint32_t res = __ibm943sb_to_ucs4[c]; \
119 if (res == 0 && c != 0) \
120 return WEOF; \
121 if (res == 0x1c) \
122 res = 0x1a; \
123 else if (res == 0x7f) \
124 res = 0x1c; \
125 else if (res == 0xa5) \
126 res = 0x5c; \
127 else if (res == 0x203e) \
128 res = 0x7e; \
129 else if (res == 0x1a) \
130 res = 0x7f; \
131 return res; \
133 #include <iconv/loop.c>
135 /* Next, define the other direction. */
136 #define MIN_NEEDED_INPUT MIN_NEEDED_TO
137 #define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
138 #define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM
139 #define LOOPFCT TO_LOOP
140 #define BODY \
142 const struct gap *rp = __ucs4_to_ibm943sb_idx; \
143 unsigned char sc; \
144 uint32_t ch = get32(inptr); \
145 bool found = true; \
146 uint32_t i; \
147 uint32_t low; \
148 uint32_t high; \
149 uint16_t pccode; \
151 if (__builtin_expect (ch >= 0xffff, 0)) \
153 UNICODE_TAG_HANDLER (ch, 4); \
154 rp = NULL; \
156 else \
157 while (ch > rp->end) \
158 ++rp; \
160 /* Use the UCS4 table for single byte. */ \
161 if (__builtin_expect (rp == NULL, 0) \
162 || __builtin_expect (ch < rp->start, 0) \
163 || (sc = __ucs4_to_ibm943sb[ch + rp->idx], \
164 __builtin_expect (sc, '\1') == '\0' && ch != L'\0')) \
167 /* Use the UCS4 table for double byte. */ \
168 found = false; \
169 low = 0; \
170 high = (sizeof (__ucs4_to_ibm943db) >> 1) \
171 / sizeof (__ucs4_to_ibm943db[0][FROM]); \
172 pccode = ch; \
173 if (__builtin_expect (rp != NULL, 1)) \
174 while (low < high) \
176 i = (low + high) >> 1; \
177 if (pccode < __ucs4_to_ibm943db[i][FROM]) \
178 high = i; \
179 else if (pccode > __ucs4_to_ibm943db[i][FROM]) \
180 low = i + 1; \
181 else \
183 pccode = __ucs4_to_ibm943db[i][TO]; \
184 found = true; \
185 break; \
188 if (found) \
190 if (__builtin_expect (outptr + 2 > outend, 0)) \
192 result = __GCONV_FULL_OUTPUT; \
193 break; \
195 *outptr++ = pccode >> 8 & 0xff; \
196 *outptr++ = pccode & 0xff; \
198 else \
200 /* This is an illegal character. */ \
201 STANDARD_TO_LOOP_ERR_HANDLER (4); \
204 else \
206 if (__builtin_expect (outptr + 1 > outend, 0)) \
208 result = __GCONV_FULL_OUTPUT; \
209 break; \
211 if (ch == 0x5c) \
212 *outptr++ = 0x5c; \
213 else if (ch == 0x7e) \
214 *outptr++ = 0x7e; \
215 else \
216 *outptr++ = sc; \
219 /* Now that we wrote the output increment the input pointer. */ \
220 inptr += 4; \
222 #define LOOP_NEED_FLAGS
223 #include <iconv/loop.c>
225 /* Now define the toplevel functions. */
226 #include <iconv/skeleton.c>