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[glibc.git] / iconvdata / euc-cn.c
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1 /* Mapping tables for EUC-CN handling.
2 Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public License as
8 published by the Free Software Foundation; either version 2 of the
9 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 Library General Public License for more details.
16 You should have received a copy of the GNU Library General Public
17 License along with the GNU C Library; see the file COPYING.LIB. If not,
18 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 #include <gb2312.h>
22 #include <stdint.h>
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
35 /* First define the conversion function from EUC-CN to UCS4. */
36 #define MIN_NEEDED_INPUT MIN_NEEDED_FROM
37 #define MAX_NEEDED_INPUT MAX_NEEDED_FROM
38 #define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
39 #define LOOPFCT FROM_LOOP
40 #define BODY \
41 { \
42 uint32_t ch = *inptr; \
44 if (ch <= 0x7f) \
45 ++inptr; \
46 else \
47 if ((__builtin_expect (ch, 0xa1) <= 0xa0 && ch != 0x8e && ch != 0x8f) \
48 || __builtin_expect (ch, 0xfe) > 0xfe) \
49 { \
50 /* This is illegal. */ \
51 if (! ignore_errors_p ()) \
52 { \
53 result = __GCONV_ILLEGAL_INPUT; \
54 break; \
55 } \
57 ++inptr; \
58 ++*converted; \
59 continue; \
60 } \
61 else \
62 { \
63 /* Two or more byte character. First test whether the \
64 next character is also available. */ \
65 const unsigned char *endp; \
67 if (NEED_LENGTH_TEST && __builtin_expect (inptr + 1 >= inend, 0)) \
68 { \
69 /* The second character is not available. Store \
70 the intermediate result. */ \
71 result = __GCONV_INCOMPLETE_INPUT; \
72 break; \
73 } \
75 ch = inptr[1]; \
77 /* All second bytes of a multibyte character must be >= 0xa1. */ \
78 if (__builtin_expect (ch, 0xa1) < 0xa1) \
79 { \
80 if (! ignore_errors_p ()) \
81 { \
82 /* This is an illegal character. */ \
83 result = __GCONV_ILLEGAL_INPUT; \
84 break; \
85 } \
87 ++inptr; \
88 ++*converted; \
89 continue; \
90 } \
92 /* This is code set 1: GB 2312-80. */ \
93 endp = inptr; \
95 ch = gb2312_to_ucs4 (&endp, 2, 0x80); \
96 if (__builtin_expect (ch, 0) == __UNKNOWN_10646_CHAR) \
97 { \
98 /* This is an illegal character. */ \
99 if (! ignore_errors_p ()) \
101 /* This is an illegal character. */ \
102 result = __GCONV_ILLEGAL_INPUT; \
103 break; \
106 inptr += 2; \
107 ++*converted; \
108 continue; \
111 inptr += 2; \
114 put32 (outptr, ch); \
115 outptr += 4; \
117 #include <iconv/loop.c>
120 /* Next, define the other direction. */
121 #define MIN_NEEDED_INPUT MIN_NEEDED_TO
122 #define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
123 #define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM
124 #define LOOPFCT TO_LOOP
125 #define BODY \
127 uint32_t ch = get32 (inptr); \
129 if (ch <= L'\x7f') \
130 /* It's plain ASCII. */ \
131 *outptr++ = (unsigned char) ch; \
132 else \
134 size_t found; \
136 found = ucs4_to_gb2312 (ch, outptr, \
137 (NEED_LENGTH_TEST \
138 ? outend - outptr : MAX_NEEDED_OUTPUT)); \
139 if (!NEED_LENGTH_TEST || __builtin_expect (found, 1) != 0) \
141 if (__builtin_expect (found, 0) == __UNKNOWN_10646_CHAR) \
143 /* Illegal character. */ \
144 if (! ignore_errors_p ()) \
146 result = __GCONV_ILLEGAL_INPUT; \
147 break; \
150 inptr += 4; \
151 ++*converted; \
152 continue; \
155 /* It's a GB 2312 character, adjust it for EUC-CN. */ \
156 *outptr++ += 0x80; \
157 *outptr++ += 0x80; \
159 else \
161 /* We ran out of space. */ \
162 result = __GCONV_FULL_OUTPUT; \
163 break; \
166 inptr += 4; \
168 #include <iconv/loop.c>
171 /* Now define the toplevel functions. */
172 #include <iconv/skeleton.c>