Don't return error for invald error if ignore flag is set.
[kopensolaris-gnu/glibc.git] / iconvdata / euc-cn.c
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.
5
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.
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    Library General Public License for more details.
15
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.  */
20
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
34
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;                                                     \
43                                                                               \
44     if (ch <= 0x7f)                                                           \
45       ++inptr;                                                                \
46     else                                                                      \
47       if ((ch <= 0xa0 && ch != 0x8e && ch != 0x8f) || ch > 0xfe)              \
48         {                                                                     \
49           /* This is illegal.  */                                             \
50           if (! ignore_errors_p ())                                           \
51             {                                                                 \
52               result = __GCONV_ILLEGAL_INPUT;                                 \
53               break;                                                          \
54             }                                                                 \
55                                                                               \
56           ++inptr;                                                            \
57           ++*converted;                                                       \
58           continue;                                                           \
59         }                                                                     \
60       else                                                                    \
61         {                                                                     \
62           /* Two or more byte character.  First test whether the              \
63              next character is also available.  */                            \
64           const unsigned char *endp;                                          \
65                                                                               \
66           if (NEED_LENGTH_TEST && inptr + 1 >= inend)                         \
67             {                                                                 \
68               /* The second character is not available.  Store                \
69                  the intermediate result.  */                                 \
70               result = __GCONV_INCOMPLETE_INPUT;                              \
71               break;                                                          \
72             }                                                                 \
73                                                                               \
74           ch = inptr[1];                                                      \
75                                                                               \
76           /* All second bytes of a multibyte character must be >= 0xa1. */    \
77           if (ch < 0xa1)                                                      \
78             {                                                                 \
79               if (! ignore_errors_p ())                                       \
80                 {                                                             \
81                   /* This is an illegal character.  */                        \
82                   result = __GCONV_ILLEGAL_INPUT;                             \
83                   break;                                                      \
84                 }                                                             \
85                                                                               \
86               ++inptr;                                                        \
87               ++*converted;                                                   \
88               continue;                                                       \
89             }                                                                 \
90                                                                               \
91           /* This is code set 1: GB 2312-80.  */                              \
92           endp = inptr;                                                       \
93                                                                               \
94           ch = gb2312_to_ucs4 (&endp, 2, 0x80);                               \
95           if (ch == __UNKNOWN_10646_CHAR)                                     \
96             {                                                                 \
97               /* This is an illegal character.  */                            \
98               if (! ignore_errors_p ())                                       \
99                 {                                                             \
100                   /* This is an illegal character.  */                        \
101                   result = __GCONV_ILLEGAL_INPUT;                             \
102                   break;                                                      \
103                 }                                                             \
104                                                                               \
105               inptr += 2;                                                     \
106               ++*converted;                                                   \
107               continue;                                                       \
108             }                                                                 \
109                                                                               \
110           inptr += 2;                                                         \
111         }                                                                     \
112                                                                               \
113     put32 (outptr, ch);                                                       \
114     outptr += 4;                                                              \
115   }
116 #include <iconv/loop.c>
117
118
119 /* Next, define the other direction.  */
120 #define MIN_NEEDED_INPUT        MIN_NEEDED_TO
121 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_FROM
122 #define MAX_NEEDED_OUTPUT       MAX_NEEDED_FROM
123 #define LOOPFCT                 TO_LOOP
124 #define BODY \
125   {                                                                           \
126     uint32_t ch = get32 (inptr);                                              \
127                                                                               \
128     if (ch <= L'\x7f')                                                        \
129       /* It's plain ASCII.  */                                                \
130       *outptr++ = (unsigned char) ch;                                         \
131     else                                                                      \
132       {                                                                       \
133         size_t found;                                                         \
134                                                                               \
135         found = ucs4_to_gb2312 (ch, outptr,                                   \
136                                 (NEED_LENGTH_TEST                             \
137                                  ? outend - outptr : MAX_NEEDED_OUTPUT));     \
138         if (!NEED_LENGTH_TEST || found != 0)                                  \
139           {                                                                   \
140             if (found == __UNKNOWN_10646_CHAR)                                \
141               {                                                               \
142                 /* Illegal character.  */                                     \
143                 if (! ignore_errors_p ())                                     \
144                   {                                                           \
145                     result = __GCONV_ILLEGAL_INPUT;                           \
146                     break;                                                    \
147                   }                                                           \
148                                                                               \
149                 inptr += 4;                                                   \
150                 ++*converted;                                                 \
151                 continue;                                                     \
152               }                                                               \
153                                                                               \
154             /* It's a GB 2312 character, adjust it for EUC-CN.  */            \
155             *outptr++ += 0x80;                                                \
156             *outptr++ += 0x80;                                                \
157           }                                                                   \
158         else                                                                  \
159           {                                                                   \
160             /* We ran out of space.  */                                       \
161             result = __GCONV_FULL_OUTPUT;                                     \
162             break;                                                            \
163           }                                                                   \
164       }                                                                       \
165     inptr += 4;                                                               \
166   }
167 #include <iconv/loop.c>
168
169
170 /* Now define the toplevel functions.  */
171 #include <iconv/skeleton.c>