1 | /* |
---|
2 | * Copyright (c) 2003-2004, Artem B. Bityuckiy |
---|
3 | * Copyright (c) 1999,2000, Konstantin Chuguev. All rights reserved. |
---|
4 | * |
---|
5 | * Redistribution and use in source and binary forms, with or without |
---|
6 | * modification, are permitted provided that the following conditions |
---|
7 | * are met: |
---|
8 | * 1. Redistributions of source code must retain the above copyright |
---|
9 | * notice, this list of conditions and the following disclaimer. |
---|
10 | * 2. Redistributions in binary form must reproduce the above copyright |
---|
11 | * notice, this list of conditions and the following disclaimer in the |
---|
12 | * documentation and/or other materials provided with the distribution. |
---|
13 | * |
---|
14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
---|
15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
---|
16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
---|
17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
---|
18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
---|
19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
---|
20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
---|
21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
---|
22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
---|
23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
---|
24 | * SUCH DAMAGE. |
---|
25 | */ |
---|
26 | #include "cesbi.h" |
---|
27 | |
---|
28 | #if defined (ICONV_TO_UCS_CES_TABLE) \ |
---|
29 | || defined (ICONV_FROM_UCS_CES_TABLE) |
---|
30 | |
---|
31 | #include <_ansi.h> |
---|
32 | #include <reent.h> |
---|
33 | #include <newlib.h> |
---|
34 | #include <sys/types.h> |
---|
35 | #include <string.h> |
---|
36 | #include <stdlib.h> |
---|
37 | #include <unistd.h> |
---|
38 | #include <fcntl.h> |
---|
39 | #include <sys/iconvnls.h> |
---|
40 | #include "../lib/endian.h" |
---|
41 | #include "../lib/local.h" |
---|
42 | #include "../lib/ucsconv.h" |
---|
43 | #include "../ccs/ccs.h" |
---|
44 | |
---|
45 | /* |
---|
46 | * Table-based CES converter is implemented here. Table-based CES converter |
---|
47 | * deals with encodings with "null" CES, like KOI8-R. In this case it is |
---|
48 | * possible to implement one generic algorithm which works with different |
---|
49 | * CCS tables. |
---|
50 | * |
---|
51 | * Table-based CES converter deals with CCS tables placed into iconv/ccs |
---|
52 | * subdirectory. First, converter tries to find needed CCS table among |
---|
53 | * linked-in tables. If not found, it tries to load it from external file |
---|
54 | * (only if corespondent capability was enabled in Newlib configuration). |
---|
55 | * |
---|
56 | * 16 bit encodings are assumed to be Big Endian. |
---|
57 | */ |
---|
58 | |
---|
59 | static ucs2_t |
---|
60 | find_code_size (ucs2_t code, const __uint16_t *tblp); |
---|
61 | |
---|
62 | static __inline ucs2_t |
---|
63 | find_code_speed (ucs2_t code, const __uint16_t *tblp); |
---|
64 | |
---|
65 | static __inline ucs2_t |
---|
66 | find_code_speed_8bit (ucs2_t code, const unsigned char *tblp); |
---|
67 | |
---|
68 | #ifdef _ICONV_ENABLE_EXTERNAL_CCS |
---|
69 | static const iconv_ccs_desc_t * |
---|
70 | load_file (struct _reent *rptr, const char *name, int direction); |
---|
71 | #endif |
---|
72 | |
---|
73 | /* |
---|
74 | * Interface data and functions implementation. |
---|
75 | */ |
---|
76 | static size_t |
---|
77 | table_close (struct _reent *rptr, |
---|
78 | void *data) |
---|
79 | { |
---|
80 | const iconv_ccs_desc_t *ccsp = (iconv_ccs_desc_t *)data; |
---|
81 | |
---|
82 | if (ccsp->type == TABLE_EXTERNAL) |
---|
83 | _free_r (rptr, (void *)ccsp->tbl); |
---|
84 | |
---|
85 | _free_r( rptr, (void *)ccsp); |
---|
86 | return 0; |
---|
87 | } |
---|
88 | |
---|
89 | #if defined (ICONV_FROM_UCS_CES_TABLE) |
---|
90 | static void * |
---|
91 | table_init_from_ucs (struct _reent *rptr, |
---|
92 | const char *encoding) |
---|
93 | { |
---|
94 | int i; |
---|
95 | const iconv_ccs_t *biccsp = NULL; |
---|
96 | iconv_ccs_desc_t *ccsp; |
---|
97 | |
---|
98 | for (i = 0; _iconv_ccs[i] != NULL; i++) |
---|
99 | if (strcmp (_iconv_ccs[i]->name, encoding) == 0) |
---|
100 | { |
---|
101 | biccsp = _iconv_ccs[i]; |
---|
102 | break; |
---|
103 | } |
---|
104 | |
---|
105 | if (biccsp != NULL) |
---|
106 | { |
---|
107 | if (biccsp->from_ucs == NULL |
---|
108 | || (ccsp = (iconv_ccs_desc_t *) |
---|
109 | _malloc_r (rptr, sizeof (iconv_ccs_desc_t))) == NULL) |
---|
110 | return NULL; |
---|
111 | |
---|
112 | ccsp->type = TABLE_BUILTIN; |
---|
113 | ccsp->bits = biccsp->bits; |
---|
114 | ccsp->optimization = biccsp->from_ucs_type; |
---|
115 | ccsp->tbl = biccsp->from_ucs; |
---|
116 | |
---|
117 | return (void *)ccsp; |
---|
118 | } |
---|
119 | |
---|
120 | #ifdef _ICONV_ENABLE_EXTERNAL_CCS |
---|
121 | return (void *)load_file (rptr, encoding, 1); |
---|
122 | #else |
---|
123 | return NULL; |
---|
124 | #endif |
---|
125 | } |
---|
126 | |
---|
127 | static size_t |
---|
128 | table_convert_from_ucs (void *data, |
---|
129 | ucs4_t in, |
---|
130 | unsigned char **outbuf, |
---|
131 | size_t *outbytesleft) |
---|
132 | { |
---|
133 | const iconv_ccs_desc_t *ccsp = (iconv_ccs_desc_t *)data; |
---|
134 | ucs2_t code; |
---|
135 | |
---|
136 | if (in > 0xFFFF || in == INVALC) |
---|
137 | return (size_t)ICONV_CES_INVALID_CHARACTER; |
---|
138 | |
---|
139 | if (ccsp->bits == TABLE_8BIT) |
---|
140 | { |
---|
141 | code = find_code_speed_8bit ((ucs2_t)in, |
---|
142 | (const unsigned char *)ccsp->tbl); |
---|
143 | if (code == INVALC) |
---|
144 | return (size_t)ICONV_CES_INVALID_CHARACTER; |
---|
145 | **outbuf = (unsigned char)code; |
---|
146 | *outbuf += 1; |
---|
147 | *outbytesleft -= 1; |
---|
148 | return 1; |
---|
149 | } |
---|
150 | else if (ccsp->optimization == TABLE_SPEED_OPTIMIZED) |
---|
151 | code = find_code_speed ((ucs2_t)in, ccsp->tbl); |
---|
152 | else |
---|
153 | code = find_code_size ((ucs2_t)in, ccsp->tbl); |
---|
154 | |
---|
155 | if (code == INVALC) |
---|
156 | return (size_t)ICONV_CES_INVALID_CHARACTER; |
---|
157 | |
---|
158 | if (*outbytesleft < 2) |
---|
159 | return (size_t)ICONV_CES_NOSPACE; |
---|
160 | |
---|
161 | /* We can't store whole word since **outbuf may be not 2-byte aligned */ |
---|
162 | **outbuf = (unsigned char)((ucs2_t)code >> 8); |
---|
163 | *(*outbuf + 1) = (unsigned char)code; |
---|
164 | *outbuf += 2; |
---|
165 | *outbytesleft -= 2; |
---|
166 | return 2; |
---|
167 | } |
---|
168 | #endif /* ICONV_FROM_UCS_CES_TABLE */ |
---|
169 | |
---|
170 | #if defined (ICONV_TO_UCS_CES_TABLE) |
---|
171 | static void * |
---|
172 | table_init_to_ucs (struct _reent *rptr, |
---|
173 | const char *encoding) |
---|
174 | { |
---|
175 | int i; |
---|
176 | const iconv_ccs_t *biccsp = NULL; |
---|
177 | iconv_ccs_desc_t *ccsp; |
---|
178 | |
---|
179 | for (i = 0; _iconv_ccs[i] != NULL; i++) |
---|
180 | if (strcmp (_iconv_ccs[i]->name, encoding) == 0) |
---|
181 | { |
---|
182 | biccsp = _iconv_ccs[i]; |
---|
183 | break; |
---|
184 | } |
---|
185 | |
---|
186 | if (biccsp != NULL) |
---|
187 | { |
---|
188 | if (biccsp->to_ucs == NULL |
---|
189 | || (ccsp = (iconv_ccs_desc_t *) |
---|
190 | _malloc_r (rptr, sizeof (iconv_ccs_desc_t))) == NULL) |
---|
191 | return NULL; |
---|
192 | |
---|
193 | ccsp->type = TABLE_BUILTIN; |
---|
194 | ccsp->bits = biccsp->bits; |
---|
195 | ccsp->optimization = biccsp->to_ucs_type; |
---|
196 | ccsp->tbl = biccsp->to_ucs; |
---|
197 | |
---|
198 | return (void *)ccsp; |
---|
199 | } |
---|
200 | |
---|
201 | #ifdef _ICONV_ENABLE_EXTERNAL_CCS |
---|
202 | return (void *)load_file (rptr, encoding, 0); |
---|
203 | #else |
---|
204 | return NULL; |
---|
205 | #endif |
---|
206 | } |
---|
207 | |
---|
208 | static ucs4_t |
---|
209 | table_convert_to_ucs (void *data, |
---|
210 | const unsigned char **inbuf, |
---|
211 | size_t *inbytesleft) |
---|
212 | { |
---|
213 | const iconv_ccs_desc_t *ccsp = (iconv_ccs_desc_t *)data; |
---|
214 | ucs2_t ucs; |
---|
215 | |
---|
216 | if (ccsp->bits == TABLE_8BIT) |
---|
217 | { |
---|
218 | if (*inbytesleft < 1) |
---|
219 | return (ucs4_t)ICONV_CES_BAD_SEQUENCE; |
---|
220 | |
---|
221 | ucs = (ucs2_t)ccsp->tbl[**inbuf]; |
---|
222 | |
---|
223 | if (ucs == INVALC) |
---|
224 | return (ucs4_t)ICONV_CES_INVALID_CHARACTER; |
---|
225 | |
---|
226 | *inbytesleft -= 1; |
---|
227 | *inbuf += 1; |
---|
228 | return (ucs4_t)ucs; |
---|
229 | } |
---|
230 | |
---|
231 | if (*inbytesleft < 2) |
---|
232 | return (ucs4_t)ICONV_CES_BAD_SEQUENCE; |
---|
233 | |
---|
234 | if (ccsp->optimization == TABLE_SIZE_OPTIMIZED) |
---|
235 | ucs = find_code_size((ucs2_t)**inbuf << 8 | (ucs2_t)*(*inbuf + 1), |
---|
236 | ccsp->tbl); |
---|
237 | else |
---|
238 | ucs = find_code_speed((ucs2_t)**inbuf << 8 | (ucs2_t)*(*inbuf + 1), |
---|
239 | ccsp->tbl); |
---|
240 | |
---|
241 | if (ucs == INVALC) |
---|
242 | return (ucs4_t)ICONV_CES_INVALID_CHARACTER; |
---|
243 | |
---|
244 | *inbuf += 2; |
---|
245 | *inbytesleft -= 2; |
---|
246 | return (ucs4_t)ucs; |
---|
247 | } |
---|
248 | #endif /* ICONV_TO_UCS_CES_TABLE */ |
---|
249 | |
---|
250 | static int |
---|
251 | table_get_mb_cur_max (void *data) |
---|
252 | { |
---|
253 | return ((iconv_ccs_desc_t *)data)->bits/8; |
---|
254 | } |
---|
255 | |
---|
256 | |
---|
257 | #if defined (ICONV_TO_UCS_CES_TABLE) |
---|
258 | const iconv_to_ucs_ces_handlers_t |
---|
259 | _iconv_to_ucs_ces_handlers_table = |
---|
260 | { |
---|
261 | table_init_to_ucs, |
---|
262 | table_close, |
---|
263 | table_get_mb_cur_max, |
---|
264 | NULL, |
---|
265 | NULL, |
---|
266 | NULL, |
---|
267 | table_convert_to_ucs |
---|
268 | }; |
---|
269 | #endif /* ICONV_FROM_UCS_CES_TABLE */ |
---|
270 | |
---|
271 | #if defined (ICONV_FROM_UCS_CES_TABLE) |
---|
272 | const iconv_from_ucs_ces_handlers_t |
---|
273 | _iconv_from_ucs_ces_handlers_table = |
---|
274 | { |
---|
275 | table_init_from_ucs, |
---|
276 | table_close, |
---|
277 | table_get_mb_cur_max, |
---|
278 | NULL, |
---|
279 | NULL, |
---|
280 | NULL, |
---|
281 | table_convert_from_ucs |
---|
282 | }; |
---|
283 | #endif /* ICONV_TO_UCS_CES_TABLE */ |
---|
284 | |
---|
285 | /* |
---|
286 | * Supplementary functions. |
---|
287 | */ |
---|
288 | |
---|
289 | /* |
---|
290 | * find_code_speed - find code in 16 bit speed-optimized table. |
---|
291 | * |
---|
292 | * PARAMETERS: |
---|
293 | * ucs2_t code - code whose mapping to find. |
---|
294 | * const __uint16_t *tblp - table pointer. |
---|
295 | * |
---|
296 | * RETURN: |
---|
297 | * Code that corresponds to 'code'. |
---|
298 | */ |
---|
299 | static __inline ucs2_t |
---|
300 | find_code_speed (ucs2_t code, |
---|
301 | const __uint16_t *tblp) |
---|
302 | { |
---|
303 | int idx = tblp[code >> 8]; |
---|
304 | |
---|
305 | if (idx == INVBLK) |
---|
306 | return (ucs2_t)INVALC; |
---|
307 | |
---|
308 | return (ucs2_t)tblp[(code & 0x00FF) + idx]; |
---|
309 | } |
---|
310 | |
---|
311 | /* |
---|
312 | * find_code_speed_8bit - find code in 8 bit speed-optimized table. |
---|
313 | * |
---|
314 | * PARAMETERS: |
---|
315 | * ucs2_t code - code whose mapping to find. |
---|
316 | * const __uint16_t *tblp - table pointer. |
---|
317 | * |
---|
318 | * RETURN: |
---|
319 | * Code that corresponds to 'code'. |
---|
320 | */ |
---|
321 | static __inline ucs2_t |
---|
322 | find_code_speed_8bit (ucs2_t code, |
---|
323 | const unsigned char *tblp) |
---|
324 | { |
---|
325 | int idx; |
---|
326 | unsigned char ccs; |
---|
327 | |
---|
328 | if (code == ((ucs2_t *)tblp)[0]) |
---|
329 | return (ucs2_t)0xFF; |
---|
330 | |
---|
331 | idx = ((ucs2_t *)tblp)[1 + (code >> 8)]; |
---|
332 | |
---|
333 | if (idx == INVBLK) |
---|
334 | return (ucs2_t)INVALC; |
---|
335 | |
---|
336 | ccs = tblp[(code & 0x00FF) + idx]; |
---|
337 | |
---|
338 | return ccs == 0xFF ? (ucs2_t)INVALC : (ucs2_t)ccs; |
---|
339 | } |
---|
340 | |
---|
341 | /* Left range boundary */ |
---|
342 | #define RANGE_LEFT(n) (tblp[FIRST_RANGE_INDEX + (n)*3 + 0]) |
---|
343 | /* Right range boundary */ |
---|
344 | #define RANGE_RIGHT(n) (tblp[FIRST_RANGE_INDEX + (n)*3 + 1]) |
---|
345 | /* Range offset */ |
---|
346 | #define RANGE_INDEX(n) (tblp[FIRST_RANGE_INDEX + (n)*3 + 2]) |
---|
347 | /* Un-ranged offset */ |
---|
348 | #define UNRANGED_INDEX(n) (tblp[FIRST_UNRANGED_INDEX_INDEX] + (n)*2) |
---|
349 | |
---|
350 | /* |
---|
351 | * find_code_size - find code in 16 bit size-optimized table. |
---|
352 | * |
---|
353 | * PARAMETERS: |
---|
354 | * ucs2_t code - code whose mapping to find. |
---|
355 | * const __uint16_t *tblp - table pointer. |
---|
356 | * |
---|
357 | * RETURN: |
---|
358 | * Code that corresponds to 'code'. |
---|
359 | */ |
---|
360 | static ucs2_t |
---|
361 | find_code_size (ucs2_t code, |
---|
362 | const __uint16_t *tblp) |
---|
363 | { |
---|
364 | int first, last, cur, center; |
---|
365 | |
---|
366 | if (tblp[RANGES_NUM_INDEX] > 0) |
---|
367 | { |
---|
368 | first = 0; |
---|
369 | last = tblp[RANGES_NUM_INDEX] - 1; |
---|
370 | |
---|
371 | do |
---|
372 | { |
---|
373 | center = (last - first)/2; |
---|
374 | cur = center + first; |
---|
375 | |
---|
376 | if (code > RANGE_RIGHT (cur)) |
---|
377 | first = cur; |
---|
378 | else if (code < RANGE_LEFT (cur)) |
---|
379 | last = cur; |
---|
380 | else |
---|
381 | return (ucs2_t)tblp[RANGE_INDEX (cur) + code - RANGE_LEFT (cur)]; |
---|
382 | } while (center > 0); |
---|
383 | |
---|
384 | if (last - first == 1) |
---|
385 | { |
---|
386 | if (code >= RANGE_LEFT (first) && code <= RANGE_RIGHT (first)) |
---|
387 | return (ucs2_t)tblp[RANGE_INDEX (first) |
---|
388 | + code - RANGE_LEFT (first)]; |
---|
389 | if (code >= RANGE_LEFT (last) && code <= RANGE_RIGHT (last)) |
---|
390 | return (ucs2_t)tblp[RANGE_INDEX (last) |
---|
391 | + code - RANGE_LEFT (last)]; |
---|
392 | } |
---|
393 | } |
---|
394 | |
---|
395 | if (tblp[UNRANGED_NUM_INDEX] > 0) |
---|
396 | { |
---|
397 | first = 0; |
---|
398 | last = tblp[UNRANGED_NUM_INDEX] - 1; |
---|
399 | |
---|
400 | do |
---|
401 | { |
---|
402 | int c; |
---|
403 | |
---|
404 | center = (last - first)/2; |
---|
405 | cur = center + first; |
---|
406 | c = tblp[UNRANGED_INDEX (cur)]; |
---|
407 | |
---|
408 | if (code > c) |
---|
409 | first = cur; |
---|
410 | else if (code < c) |
---|
411 | last = cur; |
---|
412 | else |
---|
413 | return (ucs2_t)tblp[UNRANGED_INDEX (cur) + 1]; |
---|
414 | } while (center > 0); |
---|
415 | |
---|
416 | if (last - first == 1) |
---|
417 | { |
---|
418 | if (code == tblp[UNRANGED_INDEX (first)]) |
---|
419 | return (ucs2_t)tblp[UNRANGED_INDEX (first) + 1]; |
---|
420 | if (code == tblp[UNRANGED_INDEX (last)]) |
---|
421 | return (ucs2_t)tblp[UNRANGED_INDEX (last) + 1]; |
---|
422 | } |
---|
423 | } |
---|
424 | |
---|
425 | return (ucs2_t)INVALC; |
---|
426 | } |
---|
427 | |
---|
428 | #ifdef _ICONV_ENABLE_EXTERNAL_CCS |
---|
429 | |
---|
430 | #define _16BIT_ELT(offset) \ |
---|
431 | ICONV_BETOHS(*((__uint16_t *)(buf + (offset)))) |
---|
432 | #define _32BIT_ELT(offset) \ |
---|
433 | ICONV_BETOHL(*((__uint32_t *)(buf + (offset)))) |
---|
434 | |
---|
435 | /* |
---|
436 | * load_file - load conversion table from external file and initialize |
---|
437 | * iconv_ccs_desc_t object. |
---|
438 | * |
---|
439 | * PARAMETERS: |
---|
440 | * struct _reent *rptr - reent structure of current thread/process. |
---|
441 | * const char *name - encoding name. |
---|
442 | * int direction - conversion direction. |
---|
443 | * |
---|
444 | * DESCRIPTION: |
---|
445 | * Loads conversion table of appropriate endianess from external file |
---|
446 | * and initializes 'iconv_ccs_desc_t' table description structure. |
---|
447 | * If 'direction' is 0 - load "To UCS" table, else load "From UCS" |
---|
448 | * table. |
---|
449 | * |
---|
450 | * RETURN: |
---|
451 | * iconv_ccs_desc_t * pointer is success, NULL if failure. |
---|
452 | */ |
---|
453 | static const iconv_ccs_desc_t * |
---|
454 | load_file (struct _reent *rptr, |
---|
455 | const char *name, |
---|
456 | int direction) |
---|
457 | { |
---|
458 | int fd; |
---|
459 | const unsigned char *buf; |
---|
460 | int tbllen, hdrlen; |
---|
461 | off_t off; |
---|
462 | const char *fname; |
---|
463 | iconv_ccs_desc_t *ccsp = NULL; |
---|
464 | int nmlen = strlen(name); |
---|
465 | /* Since CCS table name length can vary - it is aligned (by adding extra |
---|
466 | * bytes to it's end) to 4-byte boundary. */ |
---|
467 | int alignment = nmlen & 3 ? 4 - (nmlen & 3) : 0; |
---|
468 | |
---|
469 | nmlen = strlen(name); |
---|
470 | |
---|
471 | hdrlen = nmlen + EXTTABLE_HEADER_LEN + alignment; |
---|
472 | |
---|
473 | if ((fname = _iconv_nls_construct_filename (rptr, name, ICONV_SUBDIR, |
---|
474 | ICONV_DATA_EXT)) == NULL) |
---|
475 | return NULL; |
---|
476 | |
---|
477 | if ((fd = _open_r (rptr, fname, O_RDONLY, S_IRUSR)) == -1) |
---|
478 | goto error1; |
---|
479 | |
---|
480 | if ((buf = (const unsigned char *)_malloc_r (rptr, hdrlen)) == NULL) |
---|
481 | goto error2; |
---|
482 | |
---|
483 | if (_read_r (rptr, fd, (void *)buf, hdrlen) != hdrlen) |
---|
484 | goto error3; |
---|
485 | |
---|
486 | if (_16BIT_ELT (EXTTABLE_VERSION_OFF) != TABLE_VERSION_1 |
---|
487 | || _32BIT_ELT (EXTTABLE_CCSNAME_LEN_OFF) != nmlen |
---|
488 | || strncmp (buf + EXTTABLE_CCSNAME_OFF, name, nmlen) != 0) |
---|
489 | goto error3; /* Bad file */ |
---|
490 | |
---|
491 | if ((ccsp = (iconv_ccs_desc_t *) |
---|
492 | _calloc_r (rptr, 1, sizeof (iconv_ccs_desc_t))) == NULL) |
---|
493 | goto error3; |
---|
494 | |
---|
495 | ccsp->bits = _16BIT_ELT (EXTTABLE_BITS_OFF); |
---|
496 | ccsp->type = TABLE_EXTERNAL; |
---|
497 | |
---|
498 | /* Add 4-byte alignment to name length */ |
---|
499 | nmlen += alignment; |
---|
500 | |
---|
501 | if (ccsp->bits == TABLE_8BIT) |
---|
502 | { |
---|
503 | if (direction == 0) /* Load "To UCS" table */ |
---|
504 | { |
---|
505 | off = (off_t)_32BIT_ELT (nmlen + EXTTABLE_TO_SPEED_OFF); |
---|
506 | tbllen = _32BIT_ELT (nmlen + EXTTABLE_TO_SPEED_LEN_OFF); |
---|
507 | } |
---|
508 | else /* Load "From UCS" table */ |
---|
509 | { |
---|
510 | off = (off_t)_32BIT_ELT (nmlen + EXTTABLE_FROM_SPEED_OFF); |
---|
511 | tbllen = _32BIT_ELT (nmlen + EXTTABLE_FROM_SPEED_LEN_OFF); |
---|
512 | } |
---|
513 | } |
---|
514 | else if (ccsp->bits == TABLE_16BIT) |
---|
515 | { |
---|
516 | if (direction == 0) /* Load "To UCS" table */ |
---|
517 | { |
---|
518 | #ifdef TABLE_USE_SIZE_OPTIMIZATION |
---|
519 | off = (off_t)_32BIT_ELT (nmlen + EXTTABLE_TO_SIZE_OFF); |
---|
520 | tbllen = _32BIT_ELT (nmlen + EXTTABLE_TO_SIZE_LEN_OFF); |
---|
521 | #else |
---|
522 | off = (off_t)_32BIT_ELT (nmlen + EXTTABLE_TO_SPEED_OFF); |
---|
523 | tbllen = _32BIT_ELT (nmlen + EXTTABLE_TO_SPEED_LEN_OFF); |
---|
524 | #endif |
---|
525 | } |
---|
526 | else /* Load "From UCS" table */ |
---|
527 | { |
---|
528 | #ifdef TABLE_USE_SIZE_OPTIMIZATION |
---|
529 | off = (off_t)_32BIT_ELT (nmlen + EXTTABLE_FROM_SIZE_OFF); |
---|
530 | tbllen = _32BIT_ELT (nmlen + EXTTABLE_FROM_SIZE_LEN_OFF); |
---|
531 | #else |
---|
532 | off = (off_t)_32BIT_ELT (nmlen + EXTTABLE_FROM_SPEED_OFF); |
---|
533 | tbllen = _32BIT_ELT (nmlen + EXTTABLE_FROM_SPEED_LEN_OFF); |
---|
534 | #endif |
---|
535 | } |
---|
536 | #ifdef TABLE_USE_SIZE_OPTIMIZATION |
---|
537 | ccsp->optimization = TABLE_SIZE_OPTIMIZED; |
---|
538 | #else |
---|
539 | ccsp->optimization = TABLE_SPEED_OPTIMIZED; |
---|
540 | #endif |
---|
541 | } |
---|
542 | else |
---|
543 | goto error4; /* Bad file */ |
---|
544 | |
---|
545 | if (off == EXTTABLE_NO_TABLE) |
---|
546 | goto error4; /* No correspondent table in file */ |
---|
547 | |
---|
548 | if ((ccsp->tbl = (ucs2_t *)_malloc_r (rptr, tbllen)) == NULL) |
---|
549 | goto error4; |
---|
550 | |
---|
551 | if (_lseek_r (rptr, fd, off, SEEK_SET) == (off_t)-1 |
---|
552 | || _read_r (rptr, fd, (void *)ccsp->tbl, tbllen) != tbllen) |
---|
553 | goto error5; |
---|
554 | |
---|
555 | goto normal_exit; |
---|
556 | |
---|
557 | error5: |
---|
558 | _free_r (rptr, (void *)ccsp->tbl); |
---|
559 | ccsp->tbl = NULL; |
---|
560 | error4: |
---|
561 | _free_r (rptr, (void *)ccsp); |
---|
562 | ccsp = NULL; |
---|
563 | error3: |
---|
564 | normal_exit: |
---|
565 | _free_r (rptr, (void *)buf); |
---|
566 | error2: |
---|
567 | if (_close_r (rptr, fd) == -1) |
---|
568 | { |
---|
569 | if (ccsp != NULL) |
---|
570 | { |
---|
571 | if (ccsp->tbl != NULL) |
---|
572 | _free_r (rptr, (void *)ccsp->tbl); |
---|
573 | _free_r (rptr, (void *)ccsp); |
---|
574 | } |
---|
575 | ccsp = NULL; |
---|
576 | } |
---|
577 | error1: |
---|
578 | _free_r (rptr, (void *)fname); |
---|
579 | return ccsp; |
---|
580 | } |
---|
581 | #endif |
---|
582 | |
---|
583 | #endif /* ICONV_TO_UCS_CES_TABLE || ICONV_FROM_UCS_CES_TABLE */ |
---|
584 | |
---|