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1 | /* Mapping tables for EUC-CN handling. | |
2 | Copyright (C) 1998-2014 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 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include <dlfcn.h> | |
21 | #include <gb2312.h> | |
22 | #include <stdint.h> | |
23 | ||
24 | /* Definitions used in the body of the `gconv' function. */ | |
25 | #define CHARSET_NAME "EUC-CN//" | |
26 | #define FROM_LOOP from_euc_cn | |
27 | #define TO_LOOP to_euc_cn | |
28 | #define DEFINE_INIT 1 | |
29 | #define DEFINE_FINI 1 | |
30 | #define MIN_NEEDED_FROM 1 | |
31 | #define MAX_NEEDED_FROM 2 | |
32 | #define MIN_NEEDED_TO 4 | |
33 | #define ONE_DIRECTION 0 | |
34 | ||
35 | ||
36 | /* First define the conversion function from EUC-CN to UCS4. */ | |
37 | #define MIN_NEEDED_INPUT MIN_NEEDED_FROM | |
38 | #define MAX_NEEDED_INPUT MAX_NEEDED_FROM | |
39 | #define MIN_NEEDED_OUTPUT MIN_NEEDED_TO | |
40 | #define LOOPFCT FROM_LOOP | |
41 | #define BODY \ | |
42 | { \ | |
43 | uint32_t ch = *inptr; \ | |
44 | \ | |
45 | if (ch <= 0x7f) \ | |
46 | ++inptr; \ | |
47 | else \ | |
48 | if ((__builtin_expect (ch <= 0xa0, 0) && ch != 0x8e && ch != 0x8f) \ | |
49 | || __builtin_expect (ch > 0xfe, 0)) \ | |
50 | { \ | |
51 | /* This is illegal. */ \ | |
52 | STANDARD_FROM_LOOP_ERR_HANDLER (1); \ | |
53 | } \ | |
54 | else \ | |
55 | { \ | |
56 | /* Two or more byte character. First test whether the \ | |
57 | next byte is also available. */ \ | |
58 | const unsigned char *endp; \ | |
59 | \ | |
60 | if (__glibc_unlikely (inptr + 1 >= inend)) \ | |
61 | { \ | |
62 | /* The second character is not available. Store \ | |
63 | the intermediate result. */ \ | |
64 | result = __GCONV_INCOMPLETE_INPUT; \ | |
65 | break; \ | |
66 | } \ | |
67 | \ | |
68 | ch = inptr[1]; \ | |
69 | \ | |
70 | /* All second bytes of a multibyte character must be >= 0xa1. */ \ | |
71 | if (__glibc_unlikely (ch < 0xa1)) \ | |
72 | STANDARD_FROM_LOOP_ERR_HANDLER (1); \ | |
73 | \ | |
74 | /* This is code set 1: GB 2312-80. */ \ | |
75 | endp = inptr; \ | |
76 | \ | |
77 | ch = gb2312_to_ucs4 (&endp, 2, 0x80); \ | |
78 | if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR)) \ | |
79 | { \ | |
80 | /* This is an illegal character. */ \ | |
81 | STANDARD_FROM_LOOP_ERR_HANDLER (2); \ | |
82 | } \ | |
83 | \ | |
84 | inptr += 2; \ | |
85 | } \ | |
86 | \ | |
87 | put32 (outptr, ch); \ | |
88 | outptr += 4; \ | |
89 | } | |
90 | #define LOOP_NEED_FLAGS | |
91 | #define ONEBYTE_BODY \ | |
92 | { \ | |
93 | if (c < 0x80) \ | |
94 | return c; \ | |
95 | else \ | |
96 | return WEOF; \ | |
97 | } | |
98 | #include <iconv/loop.c> | |
99 | ||
100 | ||
101 | /* Next, define the other direction. */ | |
102 | #define MIN_NEEDED_INPUT MIN_NEEDED_TO | |
103 | #define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM | |
104 | #define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM | |
105 | #define LOOPFCT TO_LOOP | |
106 | #define BODY \ | |
107 | { \ | |
108 | uint32_t ch = get32 (inptr); \ | |
109 | \ | |
110 | if (ch <= L'\x7f') \ | |
111 | /* It's plain ASCII. */ \ | |
112 | *outptr++ = (unsigned char) ch; \ | |
113 | else \ | |
114 | { \ | |
115 | size_t found; \ | |
116 | \ | |
117 | found = ucs4_to_gb2312 (ch, outptr, outend - outptr); \ | |
118 | if (__builtin_expect (found, 1) != 0) \ | |
119 | { \ | |
120 | if (__builtin_expect (found, 0) == __UNKNOWN_10646_CHAR) \ | |
121 | { \ | |
122 | UNICODE_TAG_HANDLER (ch, 4); \ | |
123 | \ | |
124 | /* Illegal character. */ \ | |
125 | STANDARD_TO_LOOP_ERR_HANDLER (4); \ | |
126 | } \ | |
127 | \ | |
128 | /* It's a GB 2312 character, adjust it for EUC-CN. */ \ | |
129 | *outptr++ += 0x80; \ | |
130 | *outptr++ += 0x80; \ | |
131 | } \ | |
132 | else \ | |
133 | { \ | |
134 | /* We ran out of space. */ \ | |
135 | result = __GCONV_FULL_OUTPUT; \ | |
136 | break; \ | |
137 | } \ | |
138 | } \ | |
139 | inptr += 4; \ | |
140 | } | |
141 | #define LOOP_NEED_FLAGS | |
142 | #include <iconv/loop.c> | |
143 | ||
144 | ||
145 | /* Now define the toplevel functions. */ | |
146 | #include <iconv/skeleton.c> |