1/* Mapping tables for EUC-JP handling.
2 Copyright (C) 1998-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
5
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.
10
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.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20#include <dlfcn.h>
21#include <stdint.h>
22#include <gconv.h>
23#include <jis0201.h>
24#include <jis0208.h>
25#include <jis0212.h>
26
27/* Definitions used in the body of the `gconv' function. */
28#define CHARSET_NAME "EUC-JP//"
29#define FROM_LOOP from_euc_jp
30#define TO_LOOP to_euc_jp
31#define DEFINE_INIT 1
32#define DEFINE_FINI 1
33#define MIN_NEEDED_FROM 1
34#define MAX_NEEDED_FROM 3
35#define MIN_NEEDED_TO 4
36#define ONE_DIRECTION 0
37
38
39/* First define the conversion function from EUC-JP to UCS4. */
40#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
41#define MAX_NEEDED_INPUT MAX_NEEDED_FROM
42#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
43#define LOOPFCT FROM_LOOP
44#define BODY \
45 { \
46 uint32_t ch = *inptr; \
47 \
48 if (ch < 0x8e || (ch >= 0x90 && ch <= 0x9f)) \
49 ++inptr; \
50 else if (ch == 0xff) \
51 { \
52 /* This is illegal. */ \
53 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
54 } \
55 else \
56 { \
57 /* Two or more byte character. First test whether the next \
58 byte is also available. */ \
59 int ch2; \
60 \
61 if (__glibc_unlikely (inptr + 1 >= inend)) \
62 { \
63 /* The second byte is not available. Store the \
64 intermediate result. */ \
65 result = __GCONV_INCOMPLETE_INPUT; \
66 break; \
67 } \
68 \
69 ch2 = inptr[1]; \
70 \
71 /* All second bytes of a multibyte character must be >= 0xa1. */ \
72 if (__glibc_unlikely (ch2 < 0xa1)) \
73 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
74 \
75 if (ch == 0x8e) \
76 { \
77 /* This is code set 2: half-width katakana. */ \
78 ch = jisx0201_to_ucs4 (ch2); \
79 if (__builtin_expect (ch, 0) == __UNKNOWN_10646_CHAR) \
80 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
81 \
82 inptr += 2; \
83 } \
84 else \
85 { \
86 const unsigned char *endp; \
87 \
88 if (ch == 0x8f) \
89 { \
90 /* This is code set 3: JIS X 0212-1990. */ \
91 endp = inptr + 1; \
92 \
93 ch = jisx0212_to_ucs4 (&endp, inend - endp, 0x80); \
94 } \
95 else \
96 { \
97 /* This is code set 1: JIS X 0208. */ \
98 endp = inptr; \
99 \
100 ch = jisx0208_to_ucs4 (&endp, inend - inptr, 0x80); \
101 } \
102 \
103 if (__builtin_expect (ch, 1) == 0) \
104 { \
105 /* Not enough input available. */ \
106 result = __GCONV_INCOMPLETE_INPUT; \
107 break; \
108 } \
109 if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR)) \
110 /* Illegal character. */ \
111 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
112 \
113 inptr = endp; \
114 } \
115 } \
116 \
117 put32 (outptr, ch); \
118 outptr += 4; \
119 }
120#define ONEBYTE_BODY \
121 { \
122 if (c < 0x8e || (c >= 0x90 && c <= 0x9f)) \
123 return c; \
124 else \
125 return WEOF; \
126 }
127#define LOOP_NEED_FLAGS
128#include <iconv/loop.c>
129
130
131/* Next, define the other direction. */
132#define MIN_NEEDED_INPUT MIN_NEEDED_TO
133#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
134#define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM
135#define LOOPFCT TO_LOOP
136#define BODY \
137 { \
138 uint32_t ch = get32 (inptr); \
139 \
140 if (ch < 0x8e || (ch >= 0x90 && ch <= 0x9f)) \
141 /* It's plain ASCII or C1. */ \
142 *outptr++ = ch; \
143 else if (ch == 0xa5) \
144 /* YEN sign => backslash */ \
145 *outptr++ = 0x5c; \
146 else if (ch == 0x203e) \
147 /* overscore => asciitilde */ \
148 *outptr++ = 0x7e; \
149 else \
150 { \
151 /* Try the JIS character sets. */ \
152 size_t found; \
153 \
154 /* See whether we have room for at least two characters. */ \
155 if (__glibc_unlikely (outptr + 1 >= outend)) \
156 { \
157 result = __GCONV_FULL_OUTPUT; \
158 break; \
159 } \
160 \
161 found = ucs4_to_jisx0201 (ch, outptr + 1); \
162 if (found != __UNKNOWN_10646_CHAR) \
163 { \
164 /* Yes, it's a JIS 0201 character. Store the shift byte. */ \
165 *outptr = 0x8e; \
166 outptr += 2; \
167 } \
168 else \
169 { \
170 /* No JIS 0201 character. */ \
171 found = ucs4_to_jisx0208 (ch, outptr, 2); \
172 /* Please note that we always have enough room for the output. */ \
173 if (found != __UNKNOWN_10646_CHAR) \
174 { \
175 /* It's a JIS 0208 character, adjust it for EUC-JP. */ \
176 *outptr++ += 0x80; \
177 *outptr++ += 0x80; \
178 } \
179 else \
180 { \
181 /* No JIS 0208 character. */ \
182 found = ucs4_to_jisx0212 (ch, outptr + 1, \
183 outend - outptr - 1); \
184 \
185 if (__builtin_expect (found, 1) == 0) \
186 { \
187 /* We ran out of space. */ \
188 result = __GCONV_FULL_OUTPUT; \
189 break; \
190 } \
191 else if (__builtin_expect (found, 0) != __UNKNOWN_10646_CHAR) \
192 { \
193 /* It's a JIS 0212 character, adjust it for EUC-JP. */ \
194 *outptr++ = 0x8f; \
195 *outptr++ += 0x80; \
196 *outptr++ += 0x80; \
197 } \
198 else \
199 { \
200 UNICODE_TAG_HANDLER (ch, 4); \
201 \
202 /* Illegal character. */ \
203 STANDARD_TO_LOOP_ERR_HANDLER (4); \
204 } \
205 } \
206 } \
207 } \
208 \
209 inptr += 4; \
210 }
211#define LOOP_NEED_FLAGS
212#include <iconv/loop.c>
213
214
215/* Now define the toplevel functions. */
216#include <iconv/skeleton.c>
217