Use get16, get32, put16, and put32 instead of direct casting pointer
[kopensolaris-gnu/glibc.git] / iconvdata / euc-jp.c
1 /* Mapping tables for EUC-JP 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 <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
37
38 /* First define the conversion function from EUC-JP to UCS4.  */
39 #define MIN_NEEDED_INPUT        MIN_NEEDED_FROM
40 #define MAX_NEEDED_INPUT        MAX_NEEDED_FROM
41 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_TO
42 #define LOOPFCT                 FROM_LOOP
43 #define BODY \
44   {                                                                           \
45     uint32_t ch = *inptr;                                                     \
46                                                                               \
47     if (ch <= 0x7f)                                                           \
48       ++inptr;                                                                \
49     else if ((ch <= 0xa0 || ch > 0xfe) && ch != 0x8e && ch != 0x8f)           \
50       {                                                                       \
51         /* This is illegal.  */                                               \
52         result = __GCONV_ILLEGAL_INPUT;                                       \
53         break;                                                                \
54       }                                                                       \
55     else                                                                      \
56       {                                                                       \
57         /* Two or more byte character.  First test whether the next           \
58            character is also available.  */                                   \
59         int ch2;                                                              \
60                                                                               \
61         if (NEED_LENGTH_TEST && inptr + 1 >= inend)                           \
62           {                                                                   \
63             /* The second character 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 (ch2 < 0xa1)                                                       \
73           {                                                                   \
74             /* This is an illegal character.  */                              \
75             result = __GCONV_ILLEGAL_INPUT;                                   \
76             break;                                                            \
77           }                                                                   \
78                                                                               \
79         if (ch == 0x8e)                                                       \
80           {                                                                   \
81             /* This is code set 2: half-width katakana.  */                   \
82             ch = jisx0201_to_ucs4 (ch2);                                      \
83             inptr += 2;                                                       \
84           }                                                                   \
85         else                                                                  \
86           {                                                                   \
87             const unsigned char *endp;                                        \
88                                                                               \
89             if (ch == 0x8f)                                                   \
90               {                                                               \
91                 /* This is code set 3: JIS X 0212-1990.  */                   \
92                 endp = inptr + 1;                                             \
93                                                                               \
94                 ch = jisx0212_to_ucs4 (&endp,                                 \
95                                        NEED_LENGTH_TEST ? inend - endp : 2,   \
96                                        0x80);                                 \
97               }                                                               \
98             else                                                              \
99               {                                                               \
100                 /* This is code set 1: JIS X 0208.  */                        \
101                 endp = inptr;                                                 \
102                                                                               \
103                 ch = jisx0208_to_ucs4 (&endp,                                 \
104                                        NEED_LENGTH_TEST ? inend - inptr : 2,  \
105                                        0x80);                                 \
106               }                                                               \
107                                                                               \
108             if (NEED_LENGTH_TEST && ch == 0)                                  \
109               {                                                               \
110                 /* Not enough input available.  */                            \
111                 result = __GCONV_INCOMPLETE_INPUT;                            \
112                 break;                                                        \
113               }                                                               \
114             if (ch == __UNKNOWN_10646_CHAR)                                   \
115               {                                                               \
116                 /* Illegal character.  */                                     \
117                 result = __GCONV_ILLEGAL_INPUT;                               \
118                 break;                                                        \
119               }                                                               \
120             inptr = endp;                                                     \
121           }                                                                   \
122       }                                                                       \
123                                                                               \
124     put32 (outptr, ch);                                                       \
125     outptr += 4;                                                              \
126   }
127 #include <iconv/loop.c>
128
129
130 /* Next, define the other direction.  */
131 #define MIN_NEEDED_INPUT        MIN_NEEDED_TO
132 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_FROM
133 #define MAX_NEEDED_OUTPUT       MAX_NEEDED_FROM
134 #define LOOPFCT                 TO_LOOP
135 #define BODY \
136   {                                                                           \
137     uint32_t ch = get32 (inptr);                                              \
138                                                                               \
139     if (ch <= 0x7f)                                                           \
140       /* It's plain ASCII.  */                                                \
141       *outptr++ = ch;                                                         \
142     else if (ch == 0xa5)                                                      \
143       /* YEN sign => backslash  */                                            \
144       *outptr++ = 0x5c;                                                       \
145     else if (ch == 0x203e)                                                    \
146       /* overscore => asciitilde */                                           \
147       *outptr++ = 0x7e;                                                       \
148     else                                                                      \
149       {                                                                       \
150         /* Try the JIS character sets.  */                                    \
151         size_t found;                                                         \
152                                                                               \
153         /* See whether we have room for at least two characters.  */          \
154         if (NEED_LENGTH_TEST && outptr + 1 >= outend)                         \
155           {                                                                   \
156             result = __GCONV_FULL_OUTPUT;                                     \
157             break;                                                            \
158           }                                                                   \
159                                                                               \
160         found = ucs4_to_jisx0201 (ch, outptr + 1);                            \
161         if (found != __UNKNOWN_10646_CHAR)                                    \
162           {                                                                   \
163             /* Yes, it's a JIS 0201 character.  Store the shift byte.  */     \
164             *outptr = 0x8e;                                                   \
165             outptr += 2;                                                      \
166           }                                                                   \
167         else                                                                  \
168           {                                                                   \
169             /* No JIS 0201 character.  */                                     \
170             found = ucs4_to_jisx0208 (ch, outptr, 2);                         \
171             /* Please note that we always have enough room for the output. */ \
172             if (found != __UNKNOWN_10646_CHAR)                                \
173               {                                                               \
174                 /* It's a JIS 0208 character, adjust it for EUC-JP.  */       \
175                 *outptr++ += 0x80;                                            \
176                 *outptr++ += 0x80;                                            \
177               }                                                               \
178             else                                                              \
179               {                                                               \
180                 /* No JIS 0208 character.  */                                 \
181                 found = ucs4_to_jisx0212 (ch, outptr + 1,                     \
182                                           (NEED_LENGTH_TEST                   \
183                                            ? outend - outptr - 1 : 2));       \
184                                                                               \
185                 if (found == 0)                                               \
186                   {                                                           \
187                     /* We ran out of space.  */                               \
188                     result = __GCONV_FULL_OUTPUT;                             \
189                     break;                                                    \
190                   }                                                           \
191                 else if (found != __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                     /* Illegal character.  */                                 \
201                     result = __GCONV_ILLEGAL_INPUT;                           \
202                     break;                                                    \
203                   }                                                           \
204               }                                                               \
205           }                                                                   \
206       }                                                                       \
207                                                                               \
208     inptr += 4;                                                               \
209   }
210 #include <iconv/loop.c>
211
212
213 /* Now define the toplevel functions.  */
214 #include <iconv/skeleton.c>