1 /* Conversion from and to IBM930.
2 Copyright (C) 2000-2014 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Masahide Washizawa <washi@yamato.ibm.co.jp>, 2000.
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.
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.
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/>. */
26 /* The shift sequences for this charset (it does not use ESC). */
27 #define SI 0x0F /* Shift In, host code to turn DBCS off. */
28 #define SO 0x0E /* Shift Out, host code to turn DBCS on. */
30 /* Definitions used in the body of the `gconv' function. */
31 #define CHARSET_NAME "IBM930//"
32 #define FROM_LOOP from_ibm930
33 #define TO_LOOP to_ibm930
34 #define ONE_DIRECTION 0
35 #define FROM_LOOP_MIN_NEEDED_FROM 1
36 #define FROM_LOOP_MAX_NEEDED_FROM 2
37 #define FROM_LOOP_MIN_NEEDED_TO 4
38 #define FROM_LOOP_MAX_NEEDED_TO 4
39 #define TO_LOOP_MIN_NEEDED_FROM 4
40 #define TO_LOOP_MAX_NEEDED_FROM 4
41 #define TO_LOOP_MIN_NEEDED_TO 1
42 #define TO_LOOP_MAX_NEEDED_TO 3
43 #define PREPARE_LOOP \
45 int *curcsp = &data->__statep->__count;
46 #define EXTRA_LOOP_ARGS , curcsp
48 /* Definitions of initialization and destructor function. */
53 /* Since this is a stateful encoding we have to provide code which resets
54 the output state to the initial state. This has to be done during the
56 #define EMIT_SHIFT_TO_INIT \
57 if ((data->__statep->__count & ~7) != sb) \
60 data->__statep->__count &= 7; \
63 /* We are not in the initial state. To switch back we have \
65 if (__glibc_unlikely (outbuf >= outend)) \
66 /* We don't have enough room in the output buffer. */ \
67 status = __GCONV_FULL_OUTPUT; \
70 /* Write out the shift sequence. */ \
72 data->__statep->__count &= 7; \
78 /* Since we might have to reset input pointer we must be able to save
79 and retore the state. */
80 #define SAVE_RESET_STATE(Save) \
82 save_curcs = *curcsp; \
87 /* Current codeset type. */
95 /* First, define the conversion function from IBM-930 to UCS4. */
96 #define MIN_NEEDED_INPUT FROM_LOOP_MIN_NEEDED_FROM
97 #define MAX_NEEDED_INPUT FROM_LOOP_MAX_NEEDED_FROM
98 #define MIN_NEEDED_OUTPUT FROM_LOOP_MIN_NEEDED_TO
99 #define MAX_NEEDED_OUTPUT FROM_LOOP_MAX_NEEDED_TO
100 #define LOOPFCT FROM_LOOP
103 uint32_t ch = *inptr; \
106 if (__builtin_expect (ch, 0) == SO) \
108 /* Shift OUT, change to DBCS converter. */ \
111 result = __GCONV_ILLEGAL_INPUT; \
118 else if (__builtin_expect (ch, 0) == SI) \
120 /* Shift IN, change to SBCS converter */ \
123 result = __GCONV_ILLEGAL_INPUT; \
133 /* Use the IBM930 table for single byte. */ \
134 res = __ibm930sb_to_ucs4[ch]; \
135 if (__builtin_expect (res, L'\1') == L'\0' && ch != '\0') \
137 /* This is an illegal character. */ \
138 STANDARD_FROM_LOOP_ERR_HANDLER (1); \
142 put32 (outptr, res); \
149 /* Use the IBM930 table for double byte. */ \
150 const struct gap *rp2 = __ibm930db_to_ucs4_idx; \
152 assert (curcs == db); \
154 if (__glibc_unlikely (inptr + 1 >= inend)) \
156 /* The second character is not available. Store the \
157 intermediate result. */ \
158 result = __GCONV_INCOMPLETE_INPUT; \
162 ch = (ch * 0x100) + inptr[1]; \
163 while (ch > rp2->end) \
166 if (__builtin_expect (rp2->start == 0xffff, 0) \
167 || __builtin_expect (ch < rp2->start, 0) \
168 || (res = __ibm930db_to_ucs4[ch + rp2->idx], \
169 __builtin_expect (res, L'\1') == L'\0' && ch != '\0')) \
171 /* This is an illegal character. */ \
172 STANDARD_FROM_LOOP_ERR_HANDLER (2); \
176 put32 (outptr, res); \
182 #define LOOP_NEED_FLAGS
183 #define EXTRA_LOOP_DECLS , int *curcsp
184 #define INIT_PARAMS int curcs = *curcsp & ~7
185 #define UPDATE_PARAMS *curcsp = curcs
186 #include <iconv/loop.c>
188 /* Next, define the other direction. */
189 #define MIN_NEEDED_INPUT TO_LOOP_MIN_NEEDED_FROM
190 #define MAX_NEEDED_INPUT TO_LOOP_MAX_NEEDED_FROM
191 #define MIN_NEEDED_OUTPUT TO_LOOP_MIN_NEEDED_TO
192 #define MAX_NEEDED_OUTPUT TO_LOOP_MAX_NEEDED_TO
193 #define LOOPFCT TO_LOOP
196 uint32_t ch = get32 (inptr); \
197 const struct gap *rp1 = __ucs4_to_ibm930sb_idx; \
198 const struct gap *rp2 = __ucs4_to_ibm930db_idx; \
201 if (__glibc_unlikely (ch >= 0xffff)) \
203 UNICODE_TAG_HANDLER (ch, 4); \
205 STANDARD_TO_LOOP_ERR_HANDLER (4); \
208 while (ch > rp1->end) \
211 /* Use the UCS4 table for single byte. */ \
212 if (__builtin_expect (ch < rp1->start, 0) \
213 || (cp = __ucs4_to_ibm930sb[ch + rp1->idx], \
214 __builtin_expect (cp[0], L'\1') == L'\0' && ch != '\0')) \
216 /* Use the UCS4 table for double byte. */ \
217 while (ch > rp2->end) \
220 if (__builtin_expect (ch < rp2->start, 0) \
221 || (cp = __ucs4_to_ibm930db[ch + rp2->idx], \
222 __builtin_expect (cp[0], L'\1')== L'\0' && ch != '\0')) \
224 /* This is an illegal character. */ \
225 STANDARD_TO_LOOP_ERR_HANDLER (4); \
231 if (__glibc_unlikely (outptr + 1 > outend)) \
233 result = __GCONV_FULL_OUTPUT; \
240 if (__glibc_unlikely (outptr + 2 > outend)) \
242 result = __GCONV_FULL_OUTPUT; \
253 if (__glibc_unlikely (outptr + 1 > outend)) \
255 result = __GCONV_FULL_OUTPUT; \
261 if (__glibc_unlikely (outptr + 1 > outend)) \
263 result = __GCONV_FULL_OUTPUT; \
268 else if (ch == 0x5c) \
275 /* Now that we wrote the output increment the input pointer. */ \
278 #define LOOP_NEED_FLAGS
279 #define EXTRA_LOOP_DECLS , int *curcsp
280 #define INIT_PARAMS int curcs = *curcsp & ~7
281 #define REINIT_PARAMS curcs = *curcsp & ~7
282 #define UPDATE_PARAMS *curcsp = curcs
283 #include <iconv/loop.c>
285 /* Now define the toplevel functions. */
286 #include <iconv/skeleton.c>