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ef416fc2 | 1 | /* |
bc44d920 | 2 | * "$Id: transcode.c 6649 2007-07-11 21:46:42Z mike $" |
ef416fc2 | 3 | * |
4 | * Transcoding support for the Common UNIX Printing System (CUPS). | |
5 | * | |
bc44d920 | 6 | * Copyright 2007 by Apple Inc. |
b86bc4cf | 7 | * Copyright 1997-2007 by Easy Software Products. |
ef416fc2 | 8 | * |
bc44d920 | 9 | * These coded instructions, statements, and computer programs are the |
10 | * property of Apple Inc. and are protected by Federal copyright | |
11 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
12 | * which should have been included with this file. If this file is | |
13 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
ef416fc2 | 14 | * |
bc44d920 | 15 | * This file is subject to the Apple OS-Developed Software exception. |
ef416fc2 | 16 | * |
17 | * Contents: | |
18 | * | |
fa73b229 | 19 | * _cupsCharmapFlush() - Flush all character set maps out of cache. |
e1d6a774 | 20 | * _cupsCharmapFree() - Free a character set map. |
21 | * _cupsCharmapGet() - Get a character set map. | |
ef416fc2 | 22 | * cupsCharsetToUTF8() - Convert legacy character set to UTF-8. |
e1d6a774 | 23 | * cupsUTF8ToCharset() - Convert UTF-8 to legacy character set. |
ef416fc2 | 24 | * cupsUTF8ToUTF32() - Convert UTF-8 to UTF-32. |
25 | * cupsUTF32ToUTF8() - Convert UTF-32 to UTF-8. | |
e1d6a774 | 26 | * compare_wide() - Compare key for wide (VBCS) match. |
27 | * conv_sbcs_to_utf8() - Convert legacy SBCS to UTF-8. | |
ef416fc2 | 28 | * conv_utf8_to_sbcs() - Convert UTF-8 to legacy SBCS. |
29 | * conv_utf8_to_vbcs() - Convert UTF-8 to legacy DBCS/VBCS. | |
ef416fc2 | 30 | * conv_vbcs_to_utf8() - Convert legacy DBCS/VBCS to UTF-8. |
e1d6a774 | 31 | * free_sbcs_charmap() - Free memory used by a single byte character set. |
32 | * free_vbcs_charmap() - Free memory used by a variable byte character set. | |
d6ae789d | 33 | * get_charmap() - Lookup or get a character set map (private). |
e1d6a774 | 34 | * get_charmap_count() - Count lines in a charmap file. |
35 | * get_sbcs_charmap() - Get SBCS Charmap. | |
36 | * get_vbcs_charmap() - Get DBCS/VBCS Charmap. | |
ef416fc2 | 37 | */ |
38 | ||
39 | /* | |
40 | * Include necessary headers... | |
41 | */ | |
42 | ||
43 | #include "globals.h" | |
e1d6a774 | 44 | #include "debug.h" |
e53920b9 | 45 | #include <limits.h> |
ef416fc2 | 46 | #include <stdlib.h> |
47 | #include <errno.h> | |
48 | #include <time.h> | |
49 | ||
50 | ||
d6ae789d | 51 | /* |
52 | * Local globals... | |
53 | */ | |
54 | ||
55 | #ifdef HAVE_PTHREAD_H | |
56 | static pthread_mutex_t map_mutex = PTHREAD_MUTEX_INITIALIZER; | |
57 | /* Mutex to control access to maps */ | |
58 | #endif /* HAVE_PTHREAD_H */ | |
59 | static _cups_cmap_t *cmap_cache = NULL; | |
60 | /* SBCS Charmap Cache */ | |
61 | static _cups_vmap_t *vmap_cache = NULL; | |
62 | /* VBCS Charmap Cache */ | |
63 | ||
64 | ||
ef416fc2 | 65 | /* |
e1d6a774 | 66 | * Local functions... |
ef416fc2 | 67 | */ |
68 | ||
e1d6a774 | 69 | static int compare_wide(const void *k1, const void *k2); |
70 | static int conv_sbcs_to_utf8(cups_utf8_t *dest, | |
71 | const cups_sbcs_t *src, | |
72 | int maxout, | |
73 | const cups_encoding_t encoding); | |
74 | static int conv_utf8_to_sbcs(cups_sbcs_t *dest, | |
75 | const cups_utf8_t *src, | |
76 | int maxout, | |
77 | const cups_encoding_t encoding); | |
78 | static int conv_utf8_to_vbcs(cups_sbcs_t *dest, | |
79 | const cups_utf8_t *src, | |
80 | int maxout, | |
81 | const cups_encoding_t encoding); | |
82 | static int conv_vbcs_to_utf8(cups_utf8_t *dest, | |
83 | const cups_sbcs_t *src, | |
84 | int maxout, | |
85 | const cups_encoding_t encoding); | |
86 | static void free_sbcs_charmap(_cups_cmap_t *sbcs); | |
87 | static void free_vbcs_charmap(_cups_vmap_t *vbcs); | |
d6ae789d | 88 | static void *get_charmap(const cups_encoding_t encoding); |
e1d6a774 | 89 | static int get_charmap_count(cups_file_t *fp); |
90 | static _cups_cmap_t *get_sbcs_charmap(const cups_encoding_t encoding, | |
91 | const char *filename); | |
92 | static _cups_vmap_t *get_vbcs_charmap(const cups_encoding_t encoding, | |
93 | const char *filename); | |
94 | ||
ef416fc2 | 95 | |
96 | /* | |
e1d6a774 | 97 | * '_cupsCharmapFlush()' - Flush all character set maps out of cache. |
ef416fc2 | 98 | */ |
99 | ||
e1d6a774 | 100 | void |
d6ae789d | 101 | _cupsCharmapFlush(void) |
ef416fc2 | 102 | { |
e1d6a774 | 103 | _cups_cmap_t *cmap, /* Legacy SBCS / Unicode Charset Map */ |
104 | *cnext; /* Next Legacy SBCS Charset Map */ | |
105 | _cups_vmap_t *vmap, /* Legacy VBCS / Unicode Charset Map */ | |
106 | *vnext; /* Next Legacy VBCS Charset Map */ | |
ef416fc2 | 107 | |
108 | ||
d6ae789d | 109 | #ifdef HAVE_PTHREAD_H |
110 | pthread_mutex_lock(&map_mutex); | |
111 | #endif /* HAVE_PTHREAD_H */ | |
112 | ||
ef416fc2 | 113 | /* |
e1d6a774 | 114 | * Loop through SBCS charset map cache, free all memory... |
ef416fc2 | 115 | */ |
116 | ||
d6ae789d | 117 | for (cmap = cmap_cache; cmap; cmap = cnext) |
e1d6a774 | 118 | { |
119 | cnext = cmap->next; | |
ef416fc2 | 120 | |
e1d6a774 | 121 | free_sbcs_charmap(cmap); |
122 | } | |
ef416fc2 | 123 | |
d6ae789d | 124 | cmap_cache = NULL; |
ef416fc2 | 125 | |
126 | /* | |
e1d6a774 | 127 | * Loop through DBCS/VBCS charset map cache, free all memory... |
ef416fc2 | 128 | */ |
129 | ||
d6ae789d | 130 | for (vmap = vmap_cache; vmap; vmap = vnext) |
e1d6a774 | 131 | { |
132 | vnext = vmap->next; | |
133 | ||
134 | free_vbcs_charmap(vmap); | |
135 | ||
136 | free(vmap); | |
137 | } | |
138 | ||
d6ae789d | 139 | vmap_cache = NULL; |
140 | ||
141 | #ifdef HAVE_PTHREAD_H | |
142 | pthread_mutex_unlock(&map_mutex); | |
143 | #endif /* HAVE_PTHREAD_H */ | |
ef416fc2 | 144 | } |
145 | ||
e1d6a774 | 146 | |
ef416fc2 | 147 | /* |
e1d6a774 | 148 | * '_cupsCharmapFree()' - Free a character set map. |
ef416fc2 | 149 | * |
e1d6a774 | 150 | * This does not actually free; use '_cupsCharmapFlush()' for that. |
ef416fc2 | 151 | */ |
e1d6a774 | 152 | |
ef416fc2 | 153 | void |
e1d6a774 | 154 | _cupsCharmapFree( |
155 | const cups_encoding_t encoding) /* I - Encoding */ | |
ef416fc2 | 156 | { |
e1d6a774 | 157 | _cups_cmap_t *cmap; /* Legacy SBCS / Unicode Charset Map */ |
158 | _cups_vmap_t *vmap; /* Legacy VBCS / Unicode Charset Map */ | |
e1d6a774 | 159 | |
ef416fc2 | 160 | |
161 | /* | |
162 | * See if we already have this SBCS charset map loaded... | |
163 | */ | |
e1d6a774 | 164 | |
d6ae789d | 165 | #ifdef HAVE_PTHREAD_H |
166 | pthread_mutex_lock(&map_mutex); | |
167 | #endif /* HAVE_PTHREAD_H */ | |
168 | ||
169 | for (cmap = cmap_cache; cmap; cmap = cmap->next) | |
ef416fc2 | 170 | { |
171 | if (cmap->encoding == encoding) | |
172 | { | |
173 | if (cmap->used > 0) | |
174 | cmap->used --; | |
d6ae789d | 175 | break; |
ef416fc2 | 176 | } |
177 | } | |
178 | ||
179 | /* | |
180 | * See if we already have this DBCS/VBCS charset map loaded... | |
181 | */ | |
e1d6a774 | 182 | |
d6ae789d | 183 | for (vmap = vmap_cache; vmap; vmap = vmap->next) |
ef416fc2 | 184 | { |
185 | if (vmap->encoding == encoding) | |
186 | { | |
187 | if (vmap->used > 0) | |
188 | vmap->used --; | |
d6ae789d | 189 | break; |
ef416fc2 | 190 | } |
191 | } | |
d6ae789d | 192 | |
193 | #ifdef HAVE_PTHREAD_H | |
194 | pthread_mutex_unlock(&map_mutex); | |
195 | #endif /* HAVE_PTHREAD_H */ | |
fa73b229 | 196 | } |
197 | ||
198 | ||
199 | /* | |
e1d6a774 | 200 | * '_cupsCharmapGet()' - Get a character set map. |
201 | * | |
202 | * This code handles single-byte (SBCS), double-byte (DBCS), and | |
203 | * variable-byte (VBCS) character sets _without_ charset escapes... | |
204 | * This code does not handle multiple-byte character sets (MBCS) | |
205 | * (such as ISO-2022-JP) with charset switching via escapes... | |
fa73b229 | 206 | */ |
207 | ||
e1d6a774 | 208 | void * /* O - Charset map pointer */ |
209 | _cupsCharmapGet( | |
210 | const cups_encoding_t encoding) /* I - Encoding */ | |
fa73b229 | 211 | { |
d6ae789d | 212 | void *charmap; /* Charset map pointer */ |
e1d6a774 | 213 | |
fa73b229 | 214 | |
e1d6a774 | 215 | DEBUG_printf(("_cupsCharmapGet(encoding=%d)\n", encoding)); |
ef416fc2 | 216 | |
217 | /* | |
e1d6a774 | 218 | * Check for valid arguments... |
ef416fc2 | 219 | */ |
e1d6a774 | 220 | |
221 | if (encoding < 0 || encoding >= CUPS_ENCODING_VBCS_END) | |
ef416fc2 | 222 | { |
e1d6a774 | 223 | DEBUG_puts(" Bad encoding, returning NULL!"); |
224 | return (NULL); | |
ef416fc2 | 225 | } |
ef416fc2 | 226 | |
227 | /* | |
d6ae789d | 228 | * Lookup or get the charset map pointer and return... |
ef416fc2 | 229 | */ |
e1d6a774 | 230 | |
d6ae789d | 231 | #ifdef HAVE_PTHREAD_H |
232 | pthread_mutex_lock(&map_mutex); | |
233 | #endif /* HAVE_PTHREAD_H */ | |
e1d6a774 | 234 | |
d6ae789d | 235 | charmap = get_charmap(encoding); |
e1d6a774 | 236 | |
d6ae789d | 237 | #ifdef HAVE_PTHREAD_H |
238 | pthread_mutex_unlock(&map_mutex); | |
239 | #endif /* HAVE_PTHREAD_H */ | |
e1d6a774 | 240 | |
d6ae789d | 241 | return (charmap); |
ef416fc2 | 242 | } |
243 | ||
e1d6a774 | 244 | |
ef416fc2 | 245 | /* |
e1d6a774 | 246 | * 'cupsCharsetToUTF8()' - Convert legacy character set to UTF-8. |
ef416fc2 | 247 | * |
248 | * This code handles single-byte (SBCS), double-byte (DBCS), and | |
249 | * variable-byte (VBCS) character sets _without_ charset escapes... | |
250 | * This code does not handle multiple-byte character sets (MBCS) | |
251 | * (such as ISO-2022-JP) with charset switching via escapes... | |
252 | */ | |
e1d6a774 | 253 | |
254 | int /* O - Count or -1 on error */ | |
255 | cupsCharsetToUTF8( | |
256 | cups_utf8_t *dest, /* O - Target string */ | |
257 | const char *src, /* I - Source string */ | |
258 | const int maxout, /* I - Max output */ | |
259 | const cups_encoding_t encoding) /* I - Encoding */ | |
ef416fc2 | 260 | { |
d6ae789d | 261 | int bytes; /* Number of bytes converted */ |
262 | ||
263 | ||
ef416fc2 | 264 | /* |
265 | * Check for valid arguments... | |
266 | */ | |
267 | ||
e1d6a774 | 268 | DEBUG_printf(("cupsCharsetToUTF8(dest=%p, src=\"%s\", maxout=%d, encoding=%d)\n", |
269 | dest, src, maxout, encoding)); | |
270 | ||
271 | if (dest) | |
272 | *dest = '\0'; | |
273 | ||
ef416fc2 | 274 | if (!dest || !src || maxout < 1 || maxout > CUPS_MAX_USTRING) |
e1d6a774 | 275 | { |
276 | DEBUG_puts(" Bad arguments, returning -1"); | |
ef416fc2 | 277 | return (-1); |
e1d6a774 | 278 | } |
ef416fc2 | 279 | |
280 | /* | |
281 | * Handle identity conversions... | |
282 | */ | |
283 | ||
284 | if (encoding == CUPS_UTF8 || | |
285 | encoding < 0 || encoding >= CUPS_ENCODING_VBCS_END) | |
286 | { | |
e1d6a774 | 287 | strlcpy((char *)dest, src, maxout); |
b86bc4cf | 288 | return ((int)strlen((char *)dest)); |
ef416fc2 | 289 | } |
290 | ||
411affcf | 291 | /* |
292 | * Handle ISO-8859-1 to UTF-8 directly... | |
293 | */ | |
294 | ||
295 | if (encoding == CUPS_ISO8859_1) | |
296 | { | |
297 | int ch; /* Character from string */ | |
298 | cups_utf8_t *destptr, /* Pointer into UTF-8 buffer */ | |
299 | *destend; /* End of UTF-8 buffer */ | |
300 | ||
301 | ||
302 | destptr = dest; | |
303 | destend = dest + maxout - 2; | |
304 | ||
305 | while (*src && destptr < destend) | |
306 | { | |
307 | ch = *src++ & 255; | |
308 | ||
309 | if (ch & 128) | |
310 | { | |
311 | *destptr++ = 0xc0 | (ch >> 6); | |
312 | *destptr++ = 0x80 | (ch & 0x3f); | |
313 | } | |
314 | else | |
315 | *destptr++ = ch; | |
316 | } | |
317 | ||
318 | *destptr = '\0'; | |
319 | ||
b86bc4cf | 320 | return ((int)(destptr - dest)); |
411affcf | 321 | } |
322 | ||
ef416fc2 | 323 | /* |
e1d6a774 | 324 | * Convert input legacy charset to UTF-8... |
ef416fc2 | 325 | */ |
e1d6a774 | 326 | |
d6ae789d | 327 | #ifdef HAVE_PTHREAD_H |
328 | pthread_mutex_lock(&map_mutex); | |
329 | #endif /* HAVE_PTHREAD_H */ | |
330 | ||
ef416fc2 | 331 | if (encoding < CUPS_ENCODING_SBCS_END) |
d6ae789d | 332 | bytes = conv_sbcs_to_utf8(dest, (cups_sbcs_t *)src, maxout, encoding); |
ef416fc2 | 333 | else if (encoding < CUPS_ENCODING_VBCS_END) |
d6ae789d | 334 | bytes = conv_vbcs_to_utf8(dest, (cups_sbcs_t *)src, maxout, encoding); |
ef416fc2 | 335 | else |
e1d6a774 | 336 | { |
d6ae789d | 337 | DEBUG_puts(" Bad encoding, returning -1"); |
338 | bytes = -1; | |
e1d6a774 | 339 | } |
d6ae789d | 340 | |
341 | #ifdef HAVE_PTHREAD_H | |
342 | pthread_mutex_unlock(&map_mutex); | |
343 | #endif /* HAVE_PTHREAD_H */ | |
344 | ||
345 | return (bytes); | |
ef416fc2 | 346 | } |
347 | ||
e1d6a774 | 348 | |
ef416fc2 | 349 | /* |
e1d6a774 | 350 | * 'cupsUTF8ToCharset()' - Convert UTF-8 to legacy character set. |
ef416fc2 | 351 | * |
352 | * This code handles single-byte (SBCS), double-byte (DBCS), and | |
353 | * variable-byte (VBCS) character sets _without_ charset escapes... | |
354 | * This code does not handle multiple-byte character sets (MBCS) | |
355 | * (such as ISO-2022-JP) with charset switching via escapes... | |
356 | */ | |
e1d6a774 | 357 | |
358 | int /* O - Count or -1 on error */ | |
359 | cupsUTF8ToCharset( | |
360 | char *dest, /* O - Target string */ | |
361 | const cups_utf8_t *src, /* I - Source string */ | |
362 | const int maxout, /* I - Max output */ | |
363 | const cups_encoding_t encoding) /* I - Encoding */ | |
ef416fc2 | 364 | { |
d6ae789d | 365 | int bytes; /* Number of bytes converted */ |
366 | ||
367 | ||
ef416fc2 | 368 | /* |
369 | * Check for valid arguments... | |
370 | */ | |
371 | ||
372 | if (!dest || !src || maxout < 1 || maxout > CUPS_MAX_USTRING) | |
e1d6a774 | 373 | { |
374 | if (dest) | |
375 | *dest = '\0'; | |
376 | ||
ef416fc2 | 377 | return (-1); |
e1d6a774 | 378 | } |
ef416fc2 | 379 | |
380 | /* | |
381 | * Handle identity conversions... | |
382 | */ | |
383 | ||
384 | if (encoding == CUPS_UTF8 || | |
385 | encoding < 0 || encoding >= CUPS_ENCODING_VBCS_END) | |
386 | { | |
e1d6a774 | 387 | strlcpy(dest, (char *)src, maxout); |
b86bc4cf | 388 | return ((int)strlen(dest)); |
ef416fc2 | 389 | } |
390 | ||
411affcf | 391 | /* |
392 | * Handle UTF-8 to ISO-8859-1 directly... | |
393 | */ | |
394 | ||
395 | if (encoding == CUPS_ISO8859_1) | |
396 | { | |
397 | int ch; /* Character from string */ | |
398 | char *destptr, /* Pointer into ISO-8859-1 buffer */ | |
399 | *destend; /* End of ISO-8859-1 buffer */ | |
400 | ||
401 | ||
402 | destptr = dest; | |
403 | destend = dest + maxout - 1; | |
404 | ||
405 | while (*src && destptr < destend) | |
406 | { | |
407 | ch = *src++; | |
408 | ||
409 | if ((ch & 0xe0) == 0xc0) | |
410 | { | |
411 | ch = ((ch & 0x1f) << 6) | (*src++ & 0x3f); | |
412 | ||
413 | if (ch < 256) | |
414 | *destptr++ = ch; | |
415 | else | |
416 | *destptr++ = '?'; | |
417 | } | |
418 | else if ((ch & 0xf0) == 0xe0 || | |
419 | (ch & 0xf8) == 0xf0) | |
420 | *destptr++ = '?'; | |
421 | else if (!(ch & 0x80)) | |
422 | *destptr++ = ch; | |
423 | } | |
424 | ||
425 | *destptr = '\0'; | |
426 | ||
b86bc4cf | 427 | return ((int)(destptr - dest)); |
411affcf | 428 | } |
429 | ||
ef416fc2 | 430 | /* |
e1d6a774 | 431 | * Convert input UTF-8 to legacy charset... |
ef416fc2 | 432 | */ |
e1d6a774 | 433 | |
d6ae789d | 434 | #ifdef HAVE_PTHREAD_H |
435 | pthread_mutex_lock(&map_mutex); | |
436 | #endif /* HAVE_PTHREAD_H */ | |
437 | ||
ef416fc2 | 438 | if (encoding < CUPS_ENCODING_SBCS_END) |
d6ae789d | 439 | bytes = conv_utf8_to_sbcs((cups_sbcs_t *)dest, src, maxout, encoding); |
ef416fc2 | 440 | else if (encoding < CUPS_ENCODING_VBCS_END) |
d6ae789d | 441 | bytes = conv_utf8_to_vbcs((cups_sbcs_t *)dest, src, maxout, encoding); |
ef416fc2 | 442 | else |
d6ae789d | 443 | bytes = -1; |
444 | ||
445 | #ifdef HAVE_PTHREAD_H | |
446 | pthread_mutex_unlock(&map_mutex); | |
447 | #endif /* HAVE_PTHREAD_H */ | |
448 | ||
449 | return (bytes); | |
ef416fc2 | 450 | } |
451 | ||
ef416fc2 | 452 | |
453 | /* | |
454 | * 'cupsUTF8ToUTF32()' - Convert UTF-8 to UTF-32. | |
455 | * | |
456 | * 32-bit UTF-32 (actually 21-bit) maps to UTF-8 as follows... | |
457 | * | |
458 | * UTF-32 char UTF-8 char(s) | |
459 | * -------------------------------------------------- | |
e1d6a774 | 460 | * 0 to 127 = 0xxxxxxx (US-ASCII) |
ef416fc2 | 461 | * 128 to 2047 = 110xxxxx 10yyyyyy |
462 | * 2048 to 65535 = 1110xxxx 10yyyyyy 10zzzzzz | |
e1d6a774 | 463 | * > 65535 = 11110xxx 10yyyyyy 10zzzzzz 10xxxxxx |
ef416fc2 | 464 | * |
465 | * UTF-32 prohibits chars beyond Plane 16 (> 0x10ffff) in UCS-4, | |
466 | * which would convert to five- or six-octet UTF-8 sequences... | |
ef416fc2 | 467 | */ |
e1d6a774 | 468 | |
469 | int /* O - Count or -1 on error */ | |
470 | cupsUTF8ToUTF32( | |
471 | cups_utf32_t *dest, /* O - Target string */ | |
472 | const cups_utf8_t *src, /* I - Source string */ | |
473 | const int maxout) /* I - Max output */ | |
ef416fc2 | 474 | { |
e1d6a774 | 475 | int i; /* Looping variable */ |
476 | cups_utf8_t ch; /* Character value */ | |
477 | cups_utf8_t next; /* Next character value */ | |
478 | cups_utf32_t ch32; /* UTF-32 character value */ | |
479 | ||
ef416fc2 | 480 | |
481 | /* | |
482 | * Check for valid arguments and clear output... | |
483 | */ | |
e1d6a774 | 484 | |
485 | if (dest) | |
486 | *dest = 0; | |
487 | ||
488 | if (!dest || !src || maxout < 1 || maxout > CUPS_MAX_USTRING) | |
ef416fc2 | 489 | return (-1); |
ef416fc2 | 490 | |
491 | /* | |
492 | * Convert input UTF-8 to output UTF-32 (and insert BOM)... | |
493 | */ | |
e1d6a774 | 494 | |
495 | *dest++ = 0xfeff; | |
e1d6a774 | 496 | |
497 | for (i = maxout - 1; *src && i > 0; i --) | |
ef416fc2 | 498 | { |
e1d6a774 | 499 | ch = *src++; |
ef416fc2 | 500 | |
501 | /* | |
502 | * Convert UTF-8 character(s) to UTF-32 character... | |
503 | */ | |
e1d6a774 | 504 | |
505 | if (!(ch & 0x80)) | |
ef416fc2 | 506 | { |
507 | /* | |
508 | * One-octet UTF-8 <= 127 (US-ASCII)... | |
509 | */ | |
e1d6a774 | 510 | |
511 | *dest++ = ch; | |
2abf387c | 512 | continue; |
ef416fc2 | 513 | } |
514 | else if ((ch & 0xe0) == 0xc0) | |
515 | { | |
516 | /* | |
517 | * Two-octet UTF-8 <= 2047 (Latin-x)... | |
518 | */ | |
e1d6a774 | 519 | |
520 | next = *src++; | |
521 | if (!next) | |
ef416fc2 | 522 | return (-1); |
e1d6a774 | 523 | |
ef416fc2 | 524 | ch32 = ((ch & 0x1f) << 6) | (next & 0x3f); |
525 | ||
526 | /* | |
527 | * Check for non-shortest form (invalid UTF-8)... | |
528 | */ | |
e1d6a774 | 529 | |
530 | if (ch32 < 0x80) | |
ef416fc2 | 531 | return (-1); |
e1d6a774 | 532 | |
533 | *dest++ = ch32; | |
ef416fc2 | 534 | } |
535 | else if ((ch & 0xf0) == 0xe0) | |
536 | { | |
537 | /* | |
538 | * Three-octet UTF-8 <= 65535 (Plane 0 - BMP)... | |
539 | */ | |
e1d6a774 | 540 | |
541 | next = *src++; | |
542 | if (!next) | |
ef416fc2 | 543 | return (-1); |
e1d6a774 | 544 | |
545 | ch32 = ((ch & 0x0f) << 6) | (next & 0x3f); | |
546 | ||
547 | next = *src++; | |
548 | if (!next) | |
ef416fc2 | 549 | return (-1); |
e1d6a774 | 550 | |
551 | ch32 = (ch32 << 6) | (next & 0x3f); | |
ef416fc2 | 552 | |
553 | /* | |
554 | * Check for non-shortest form (invalid UTF-8)... | |
555 | */ | |
e1d6a774 | 556 | |
557 | if (ch32 < 0x800) | |
ef416fc2 | 558 | return (-1); |
e1d6a774 | 559 | |
560 | *dest++ = ch32; | |
ef416fc2 | 561 | } |
562 | else if ((ch & 0xf8) == 0xf0) | |
563 | { | |
564 | /* | |
e1d6a774 | 565 | * Four-octet UTF-8... |
ef416fc2 | 566 | */ |
e1d6a774 | 567 | |
568 | next = *src++; | |
569 | if (!next) | |
ef416fc2 | 570 | return (-1); |
e1d6a774 | 571 | |
572 | ch32 = ((ch & 0x07) << 6) | (next & 0x3f); | |
573 | ||
574 | next = *src++; | |
575 | if (!next) | |
576 | return (-1); | |
577 | ||
578 | ch32 = (ch32 << 6) | (next & 0x3f); | |
579 | ||
580 | next = *src++; | |
581 | if (!next) | |
582 | return (-1); | |
583 | ||
584 | ch32 = (ch32 << 6) | (next & 0x3f); | |
585 | ||
ef416fc2 | 586 | /* |
e1d6a774 | 587 | * Check for non-shortest form (invalid UTF-8)... |
ef416fc2 | 588 | */ |
e1d6a774 | 589 | |
590 | if (ch32 < 0x10000) | |
591 | return (-1); | |
592 | ||
593 | *dest++ = ch32; | |
ef416fc2 | 594 | } |
595 | else | |
596 | { | |
597 | /* | |
e1d6a774 | 598 | * More than 4-octet (invalid UTF-8 sequence)... |
ef416fc2 | 599 | */ |
e1d6a774 | 600 | |
ef416fc2 | 601 | return (-1); |
602 | } | |
603 | ||
604 | /* | |
605 | * Check for UTF-16 surrogate (illegal UTF-8)... | |
606 | */ | |
ef416fc2 | 607 | |
2abf387c | 608 | if (ch32 >= 0xd800 && ch32 <= 0xdfff) |
ef416fc2 | 609 | return (-1); |
610 | } | |
e1d6a774 | 611 | |
ef416fc2 | 612 | *dest = 0; |
e1d6a774 | 613 | |
ef416fc2 | 614 | return (i); |
615 | } | |
616 | ||
e1d6a774 | 617 | |
ef416fc2 | 618 | /* |
619 | * 'cupsUTF32ToUTF8()' - Convert UTF-32 to UTF-8. | |
620 | * | |
621 | * 32-bit UTF-32 (actually 21-bit) maps to UTF-8 as follows... | |
622 | * | |
623 | * UTF-32 char UTF-8 char(s) | |
624 | * -------------------------------------------------- | |
e1d6a774 | 625 | * 0 to 127 = 0xxxxxxx (US-ASCII) |
ef416fc2 | 626 | * 128 to 2047 = 110xxxxx 10yyyyyy |
627 | * 2048 to 65535 = 1110xxxx 10yyyyyy 10zzzzzz | |
e1d6a774 | 628 | * > 65535 = 11110xxx 10yyyyyy 10zzzzzz 10xxxxxx |
ef416fc2 | 629 | * |
630 | * UTF-32 prohibits chars beyond Plane 16 (> 0x10ffff) in UCS-4, | |
631 | * which would convert to five- or six-octet UTF-8 sequences... | |
ef416fc2 | 632 | */ |
e1d6a774 | 633 | |
634 | int /* O - Count or -1 on error */ | |
635 | cupsUTF32ToUTF8( | |
636 | cups_utf8_t *dest, /* O - Target string */ | |
637 | const cups_utf32_t *src, /* I - Source string */ | |
638 | const int maxout) /* I - Max output */ | |
ef416fc2 | 639 | { |
e1d6a774 | 640 | cups_utf8_t *start; /* Start of destination string */ |
641 | int i; /* Looping variable */ | |
642 | int swap; /* Byte-swap input to output */ | |
643 | cups_utf32_t ch; /* Character value */ | |
644 | ||
ef416fc2 | 645 | |
646 | /* | |
647 | * Check for valid arguments and clear output... | |
648 | */ | |
e1d6a774 | 649 | |
650 | if (dest) | |
651 | *dest = '\0'; | |
652 | ||
653 | if (!dest || !src || maxout < 1) | |
ef416fc2 | 654 | return (-1); |
ef416fc2 | 655 | |
656 | /* | |
657 | * Check for leading BOM in UTF-32 and inverted BOM... | |
658 | */ | |
e1d6a774 | 659 | |
660 | start = dest; | |
661 | swap = *src == 0xfffe0000; | |
662 | ||
663 | if (*src == 0xfffe0000 || *src == 0xfeff) | |
664 | src ++; | |
ef416fc2 | 665 | |
666 | /* | |
667 | * Convert input UTF-32 to output UTF-8... | |
668 | */ | |
e1d6a774 | 669 | |
670 | for (i = maxout - 1; *src && i > 0;) | |
ef416fc2 | 671 | { |
e1d6a774 | 672 | ch = *src++; |
ef416fc2 | 673 | |
674 | /* | |
675 | * Byte swap input UTF-32, if necessary... | |
e1d6a774 | 676 | * (only byte-swapping 24 of 32 bits) |
ef416fc2 | 677 | */ |
e1d6a774 | 678 | |
ef416fc2 | 679 | if (swap) |
680 | ch = ((ch >> 24) | ((ch >> 8) & 0xff00) | ((ch << 8) & 0xff0000)); | |
681 | ||
682 | /* | |
e1d6a774 | 683 | * Check for beyond Plane 16 (invalid UTF-32)... |
ef416fc2 | 684 | */ |
ef416fc2 | 685 | |
ef416fc2 | 686 | if (ch > 0x10ffff) |
687 | return (-1); | |
688 | ||
ef416fc2 | 689 | /* |
690 | * Convert UTF-32 character to UTF-8 character(s)... | |
691 | */ | |
e1d6a774 | 692 | |
693 | if (ch < 0x80) | |
ef416fc2 | 694 | { |
695 | /* | |
696 | * One-octet UTF-8 <= 127 (US-ASCII)... | |
697 | */ | |
e1d6a774 | 698 | |
699 | *dest++ = (cups_utf8_t)ch; | |
700 | i --; | |
ef416fc2 | 701 | } |
e1d6a774 | 702 | else if (ch < 0x800) |
ef416fc2 | 703 | { |
704 | /* | |
705 | * Two-octet UTF-8 <= 2047 (Latin-x)... | |
706 | */ | |
e1d6a774 | 707 | |
708 | if (i < 2) | |
709 | return (-1); | |
710 | ||
711 | *dest++ = (cups_utf8_t)(0xc0 | ((ch >> 6) & 0x1f)); | |
712 | *dest++ = (cups_utf8_t)(0x80 | (ch & 0x3f)); | |
713 | i -= 2; | |
ef416fc2 | 714 | } |
e1d6a774 | 715 | else if (ch < 0x10000) |
ef416fc2 | 716 | { |
717 | /* | |
718 | * Three-octet UTF-8 <= 65535 (Plane 0 - BMP)... | |
719 | */ | |
e1d6a774 | 720 | |
721 | if (i < 3) | |
722 | return (-1); | |
723 | ||
724 | *dest++ = (cups_utf8_t)(0xe0 | ((ch >> 12) & 0x0f)); | |
725 | *dest++ = (cups_utf8_t)(0x80 | ((ch >> 6) & 0x3f)); | |
726 | *dest++ = (cups_utf8_t)(0x80 | (ch & 0x3f)); | |
727 | i -= 3; | |
728 | } | |
729 | else | |
730 | { | |
731 | /* | |
732 | * Four-octet UTF-8... | |
733 | */ | |
734 | ||
735 | if (i < 4) | |
736 | return (-1); | |
737 | ||
738 | *dest++ = (cups_utf8_t)(0xf0 | ((ch >> 18) & 0x07)); | |
739 | *dest++ = (cups_utf8_t)(0x80 | ((ch >> 12) & 0x3f)); | |
740 | *dest++ = (cups_utf8_t)(0x80 | ((ch >> 6) & 0x3f)); | |
741 | *dest++ = (cups_utf8_t)(0x80 | (ch & 0x3f)); | |
742 | i -= 4; | |
ef416fc2 | 743 | } |
744 | } | |
e1d6a774 | 745 | |
ef416fc2 | 746 | *dest = '\0'; |
e1d6a774 | 747 | |
748 | return ((int)(dest - start)); | |
ef416fc2 | 749 | } |
750 | ||
e1d6a774 | 751 | |
ef416fc2 | 752 | /* |
e1d6a774 | 753 | * 'compare_wide()' - Compare key for wide (VBCS) match. |
754 | */ | |
755 | ||
756 | static int | |
757 | compare_wide(const void *k1, /* I - Key char */ | |
758 | const void *k2) /* I - Map char */ | |
759 | { | |
760 | cups_vbcs_t key; /* Legacy key character */ | |
761 | cups_vbcs_t map; /* Legacy map character */ | |
762 | ||
763 | ||
764 | key = *((cups_vbcs_t *)k1); | |
765 | map = ((_cups_wide2uni_t *)k2)->widechar; | |
766 | ||
767 | return ((int)(key - map)); | |
768 | } | |
769 | ||
770 | ||
771 | /* | |
772 | * 'conv_sbcs_to_utf8()' - Convert legacy SBCS to UTF-8. | |
ef416fc2 | 773 | */ |
e1d6a774 | 774 | |
775 | static int /* O - Count or -1 on error */ | |
776 | conv_sbcs_to_utf8( | |
777 | cups_utf8_t *dest, /* O - Target string */ | |
778 | const cups_sbcs_t *src, /* I - Source string */ | |
779 | int maxout, /* I - Max output */ | |
780 | const cups_encoding_t encoding) /* I - Encoding */ | |
ef416fc2 | 781 | { |
e1d6a774 | 782 | _cups_cmap_t *cmap; /* Legacy SBCS / Unicode Charset Map */ |
783 | cups_ucs2_t *crow; /* Pointer to UCS-2 row in 'char2uni' */ | |
784 | cups_sbcs_t legchar; /* Legacy character value */ | |
785 | cups_utf32_t work[CUPS_MAX_USTRING], /* Internal UCS-4 string */ | |
786 | *workptr; /* Pointer into string */ | |
787 | ||
ef416fc2 | 788 | |
789 | /* | |
e1d6a774 | 790 | * Find legacy charset map in cache... |
ef416fc2 | 791 | */ |
e1d6a774 | 792 | |
d6ae789d | 793 | if ((cmap = (_cups_cmap_t *)get_charmap(encoding)) == NULL) |
ef416fc2 | 794 | return (-1); |
ef416fc2 | 795 | |
796 | /* | |
e1d6a774 | 797 | * Convert input legacy charset to internal UCS-4 (and insert BOM)... |
ef416fc2 | 798 | */ |
ef416fc2 | 799 | |
e1d6a774 | 800 | work[0] = 0xfeff; |
801 | for (workptr = work + 1; *src && workptr < (work + CUPS_MAX_USTRING - 1);) | |
ef416fc2 | 802 | { |
e1d6a774 | 803 | legchar = *src++; |
ef416fc2 | 804 | |
805 | /* | |
e1d6a774 | 806 | * Convert ASCII verbatim (optimization)... |
ef416fc2 | 807 | */ |
ef416fc2 | 808 | |
e1d6a774 | 809 | if (legchar < 0x80) |
810 | *workptr++ = (cups_utf32_t)legchar; | |
811 | else | |
ef416fc2 | 812 | { |
e1d6a774 | 813 | /* |
814 | * Convert unknown character to Replacement Character... | |
815 | */ | |
ef416fc2 | 816 | |
e1d6a774 | 817 | crow = cmap->char2uni + legchar; |
818 | ||
819 | if (!*crow) | |
820 | *workptr++ = 0xfffd; | |
821 | else | |
822 | *workptr++ = (cups_utf32_t)*crow; | |
ef416fc2 | 823 | } |
ef416fc2 | 824 | } |
e1d6a774 | 825 | |
826 | *workptr = 0; | |
827 | ||
828 | /* | |
829 | * Convert internal UCS-4 to output UTF-8 (and delete BOM)... | |
830 | */ | |
831 | ||
d6ae789d | 832 | cmap->used --; |
e1d6a774 | 833 | |
834 | return (cupsUTF32ToUTF8(dest, work, maxout)); | |
ef416fc2 | 835 | } |
836 | ||
e1d6a774 | 837 | |
ef416fc2 | 838 | /* |
e1d6a774 | 839 | * 'conv_utf8_to_sbcs()' - Convert UTF-8 to legacy SBCS. |
ef416fc2 | 840 | */ |
e1d6a774 | 841 | |
842 | static int /* O - Count or -1 on error */ | |
843 | conv_utf8_to_sbcs( | |
844 | cups_sbcs_t *dest, /* O - Target string */ | |
845 | const cups_utf8_t *src, /* I - Source string */ | |
846 | int maxout, /* I - Max output */ | |
847 | const cups_encoding_t encoding) /* I - Encoding */ | |
ef416fc2 | 848 | { |
e1d6a774 | 849 | cups_sbcs_t *start; /* Start of destination string */ |
850 | _cups_cmap_t *cmap; /* Legacy SBCS / Unicode Charset Map */ | |
851 | cups_sbcs_t *srow; /* Pointer to SBCS row in 'uni2char' */ | |
852 | cups_utf32_t unichar; /* Character value */ | |
853 | cups_utf32_t work[CUPS_MAX_USTRING], /* Internal UCS-4 string */ | |
854 | *workptr; /* Pointer into string */ | |
855 | ||
ef416fc2 | 856 | |
857 | /* | |
e1d6a774 | 858 | * Find legacy charset map in cache... |
ef416fc2 | 859 | */ |
e1d6a774 | 860 | |
d6ae789d | 861 | if ((cmap = (_cups_cmap_t *)get_charmap(encoding)) == NULL) |
ef416fc2 | 862 | return (-1); |
ef416fc2 | 863 | |
864 | /* | |
e1d6a774 | 865 | * Convert input UTF-8 to internal UCS-4 (and insert BOM)... |
ef416fc2 | 866 | */ |
e1d6a774 | 867 | |
868 | if (cupsUTF8ToUTF32(work, src, CUPS_MAX_USTRING) < 0) | |
869 | return (-1); | |
ef416fc2 | 870 | |
871 | /* | |
e1d6a774 | 872 | * Convert internal UCS-4 to SBCS legacy charset (and delete BOM)... |
ef416fc2 | 873 | */ |
e1d6a774 | 874 | |
875 | for (workptr = work + 1, start = dest; *workptr && maxout > 1; maxout --) | |
ef416fc2 | 876 | { |
e1d6a774 | 877 | unichar = *workptr++; |
878 | if (!unichar) | |
ef416fc2 | 879 | break; |
ef416fc2 | 880 | |
881 | /* | |
e1d6a774 | 882 | * Convert ASCII verbatim (optimization)... |
ef416fc2 | 883 | */ |
ef416fc2 | 884 | |
e1d6a774 | 885 | if (unichar < 0x80) |
886 | { | |
887 | *dest++ = (cups_sbcs_t)unichar; | |
888 | continue; | |
889 | } | |
ef416fc2 | 890 | |
891 | /* | |
e1d6a774 | 892 | * Convert unknown character to visible replacement... |
ef416fc2 | 893 | */ |
ef416fc2 | 894 | |
e1d6a774 | 895 | srow = cmap->uni2char[(int)((unichar >> 8) & 0xff)]; |
ef416fc2 | 896 | |
e1d6a774 | 897 | if (srow) |
898 | srow += (int)(unichar & 0xff); | |
ef416fc2 | 899 | |
e1d6a774 | 900 | if (!srow || !*srow) |
901 | *dest++ = '?'; | |
902 | else | |
903 | *dest++ = *srow; | |
ef416fc2 | 904 | } |
ef416fc2 | 905 | |
e1d6a774 | 906 | *dest = '\0'; |
907 | ||
d6ae789d | 908 | cmap->used --; |
e1d6a774 | 909 | |
910 | return ((int)(dest - start)); | |
ef416fc2 | 911 | } |
912 | ||
e1d6a774 | 913 | |
ef416fc2 | 914 | /* |
e1d6a774 | 915 | * 'conv_utf8_to_vbcs()' - Convert UTF-8 to legacy DBCS/VBCS. |
ef416fc2 | 916 | */ |
e1d6a774 | 917 | |
918 | static int /* O - Count or -1 on error */ | |
919 | conv_utf8_to_vbcs( | |
920 | cups_sbcs_t *dest, /* O - Target string */ | |
921 | const cups_utf8_t *src, /* I - Source string */ | |
922 | int maxout, /* I - Max output */ | |
923 | const cups_encoding_t encoding) /* I - Encoding */ | |
ef416fc2 | 924 | { |
e1d6a774 | 925 | cups_sbcs_t *start; /* Start of destination string */ |
926 | _cups_vmap_t *vmap; /* Legacy DBCS / Unicode Charset Map */ | |
927 | cups_vbcs_t *vrow; /* Pointer to VBCS row in 'uni2char' */ | |
928 | cups_utf32_t unichar; /* Character value */ | |
929 | cups_vbcs_t legchar; /* Legacy character value */ | |
930 | cups_utf32_t work[CUPS_MAX_USTRING], /* Internal UCS-4 string */ | |
931 | *workptr; /* Pointer into string */ | |
ef416fc2 | 932 | |
ef416fc2 | 933 | |
934 | /* | |
e1d6a774 | 935 | * Find legacy charset map in cache... |
ef416fc2 | 936 | */ |
ef416fc2 | 937 | |
d6ae789d | 938 | if ((vmap = (_cups_vmap_t *)get_charmap(encoding)) == NULL) |
e1d6a774 | 939 | return (-1); |
ef416fc2 | 940 | |
941 | /* | |
e1d6a774 | 942 | * Convert input UTF-8 to internal UCS-4 (and insert BOM)... |
ef416fc2 | 943 | */ |
e1d6a774 | 944 | |
945 | if (cupsUTF8ToUTF32(work, src, CUPS_MAX_USTRING) < 0) | |
946 | return (-1); | |
ef416fc2 | 947 | |
948 | /* | |
e1d6a774 | 949 | * Convert internal UCS-4 to VBCS legacy charset (and delete BOM)... |
ef416fc2 | 950 | */ |
e1d6a774 | 951 | |
952 | for (start = dest, workptr = work + 1; *workptr && maxout > 1; maxout --) | |
ef416fc2 | 953 | { |
e1d6a774 | 954 | unichar = *workptr++; |
955 | if (!unichar) | |
ef416fc2 | 956 | break; |
ef416fc2 | 957 | |
958 | /* | |
e1d6a774 | 959 | * Convert ASCII verbatim (optimization)... |
ef416fc2 | 960 | */ |
e1d6a774 | 961 | |
962 | if (unichar < 0x80) | |
963 | { | |
b86bc4cf | 964 | *dest++ = (cups_sbcs_t)unichar; |
e1d6a774 | 965 | continue; |
966 | } | |
ef416fc2 | 967 | |
968 | /* | |
e1d6a774 | 969 | * Convert unknown character to visible replacement... |
ef416fc2 | 970 | */ |
e1d6a774 | 971 | |
972 | vrow = vmap->uni2char[(int)((unichar >> 8) & 0xff)]; | |
973 | ||
974 | if (vrow) | |
975 | vrow += (int)(unichar & 0xff); | |
976 | ||
977 | if (!vrow || !*vrow) | |
978 | legchar = (cups_vbcs_t)'?'; | |
979 | else | |
980 | legchar = (cups_vbcs_t)*vrow; | |
ef416fc2 | 981 | |
982 | /* | |
e1d6a774 | 983 | * Save n-byte legacy character... |
ef416fc2 | 984 | */ |
e1d6a774 | 985 | |
986 | if (legchar > 0xffffff) | |
ef416fc2 | 987 | { |
e1d6a774 | 988 | if (maxout < 5) |
989 | return (-1); | |
990 | ||
991 | *dest++ = (cups_sbcs_t)(legchar >> 24); | |
992 | *dest++ = (cups_sbcs_t)(legchar >> 16); | |
993 | *dest++ = (cups_sbcs_t)(legchar >> 8); | |
994 | *dest++ = (cups_sbcs_t)legchar; | |
995 | ||
996 | maxout -= 3; | |
ef416fc2 | 997 | } |
e1d6a774 | 998 | else if (legchar > 0xffff) |
999 | { | |
1000 | if (maxout < 4) | |
1001 | return (-1); | |
ef416fc2 | 1002 | |
e1d6a774 | 1003 | *dest++ = (cups_sbcs_t)(legchar >> 16); |
1004 | *dest++ = (cups_sbcs_t)(legchar >> 8); | |
1005 | *dest++ = (cups_sbcs_t)legchar; | |
ef416fc2 | 1006 | |
e1d6a774 | 1007 | maxout -= 2; |
1008 | } | |
1009 | else if (legchar > 0xff) | |
1010 | { | |
1011 | *dest++ = (cups_sbcs_t)(legchar >> 8); | |
1012 | *dest++ = (cups_sbcs_t)legchar; | |
1013 | ||
1014 | maxout --; | |
1015 | } | |
ef416fc2 | 1016 | } |
e1d6a774 | 1017 | |
1018 | *dest = '\0'; | |
1019 | ||
d6ae789d | 1020 | vmap->used --; |
e1d6a774 | 1021 | |
1022 | return ((int)(dest - start)); | |
ef416fc2 | 1023 | } |
1024 | ||
e1d6a774 | 1025 | |
ef416fc2 | 1026 | /* |
e1d6a774 | 1027 | * 'conv_vbcs_to_utf8()' - Convert legacy DBCS/VBCS to UTF-8. |
ef416fc2 | 1028 | */ |
e1d6a774 | 1029 | |
1030 | static int /* O - Count or -1 on error */ | |
1031 | conv_vbcs_to_utf8( | |
1032 | cups_utf8_t *dest, /* O - Target string */ | |
1033 | const cups_sbcs_t *src, /* I - Source string */ | |
1034 | int maxout, /* I - Max output */ | |
1035 | const cups_encoding_t encoding) /* I - Encoding */ | |
ef416fc2 | 1036 | { |
e1d6a774 | 1037 | _cups_vmap_t *vmap; /* Legacy VBCS / Unicode Charset Map */ |
1038 | cups_ucs2_t *crow; /* Pointer to UCS-2 row in 'char2uni' */ | |
1039 | _cups_wide2uni_t *wide2uni; /* Pointer to row in 'wide2uni' */ | |
1040 | cups_sbcs_t leadchar; /* Lead char of n-byte legacy char */ | |
1041 | cups_vbcs_t legchar; /* Legacy character value */ | |
1042 | cups_utf32_t work[CUPS_MAX_USTRING], /* Internal UCS-4 string */ | |
1043 | *workptr; /* Pointer into string */ | |
ef416fc2 | 1044 | |
ef416fc2 | 1045 | |
1046 | /* | |
e1d6a774 | 1047 | * Find legacy charset map in cache... |
ef416fc2 | 1048 | */ |
ef416fc2 | 1049 | |
d6ae789d | 1050 | if ((vmap = (_cups_vmap_t *)get_charmap(encoding)) == NULL) |
e1d6a774 | 1051 | return (-1); |
ef416fc2 | 1052 | |
1053 | /* | |
e1d6a774 | 1054 | * Convert input legacy charset to internal UCS-4 (and insert BOM)... |
ef416fc2 | 1055 | */ |
ef416fc2 | 1056 | |
e1d6a774 | 1057 | work[0] = 0xfeff; |
1058 | for (workptr = work + 1; *src && workptr < (work + CUPS_MAX_USTRING - 1);) | |
ef416fc2 | 1059 | { |
e1d6a774 | 1060 | legchar = *src++; |
1061 | leadchar = (cups_sbcs_t)legchar; | |
ef416fc2 | 1062 | |
1063 | /* | |
e1d6a774 | 1064 | * Convert ASCII verbatim (optimization)... |
ef416fc2 | 1065 | */ |
ef416fc2 | 1066 | |
e1d6a774 | 1067 | if (legchar < 0x80) |
ef416fc2 | 1068 | { |
e1d6a774 | 1069 | *workptr++ = (cups_utf32_t)legchar; |
1070 | continue; | |
ef416fc2 | 1071 | } |
1072 | ||
1073 | /* | |
e1d6a774 | 1074 | * Convert 2-byte legacy character... |
ef416fc2 | 1075 | */ |
e1d6a774 | 1076 | |
1077 | if (vmap->lead2char[(int)leadchar] == leadchar) | |
ef416fc2 | 1078 | { |
e1d6a774 | 1079 | if (!*src) |
1080 | return (-1); | |
1081 | ||
1082 | legchar = (legchar << 8) | *src++; | |
1083 | ||
ef416fc2 | 1084 | /* |
e1d6a774 | 1085 | * Convert unknown character to Replacement Character... |
ef416fc2 | 1086 | */ |
e1d6a774 | 1087 | |
1088 | crow = vmap->char2uni[(int)((legchar >> 8) & 0xff)]; | |
1089 | if (crow) | |
1090 | crow += (int) (legchar & 0xff); | |
1091 | ||
1092 | if (!crow || !*crow) | |
1093 | *workptr++ = 0xfffd; | |
1094 | else | |
1095 | *workptr++ = (cups_utf32_t)*crow; | |
1096 | continue; | |
ef416fc2 | 1097 | } |
1098 | ||
1099 | /* | |
e1d6a774 | 1100 | * Fetch 3-byte or 4-byte legacy character... |
ef416fc2 | 1101 | */ |
e1d6a774 | 1102 | |
1103 | if (vmap->lead3char[(int)leadchar] == leadchar) | |
ef416fc2 | 1104 | { |
e1d6a774 | 1105 | if (!*src || !src[1]) |
1106 | return (-1); | |
1107 | ||
1108 | legchar = (legchar << 8) | *src++; | |
1109 | legchar = (legchar << 8) | *src++; | |
ef416fc2 | 1110 | } |
e1d6a774 | 1111 | else if (vmap->lead4char[(int)leadchar] == leadchar) |
1112 | { | |
1113 | if (!*src || !src[1] || !src[2]) | |
1114 | return (-1); | |
1115 | ||
1116 | legchar = (legchar << 8) | *src++; | |
1117 | legchar = (legchar << 8) | *src++; | |
1118 | legchar = (legchar << 8) | *src++; | |
1119 | } | |
1120 | else | |
1121 | return (-1); | |
ef416fc2 | 1122 | |
1123 | /* | |
e1d6a774 | 1124 | * Find 3-byte or 4-byte legacy character... |
ef416fc2 | 1125 | */ |
e1d6a774 | 1126 | |
1127 | wide2uni = (_cups_wide2uni_t *)bsearch(&legchar, | |
1128 | vmap->wide2uni, | |
1129 | vmap->widecount, | |
1130 | sizeof(_cups_wide2uni_t), | |
1131 | compare_wide); | |
ef416fc2 | 1132 | |
1133 | /* | |
e1d6a774 | 1134 | * Convert unknown character to Replacement Character... |
ef416fc2 | 1135 | */ |
e1d6a774 | 1136 | |
1137 | if (!wide2uni || !wide2uni->unichar) | |
1138 | *workptr++ = 0xfffd; | |
1139 | else | |
1140 | *workptr++ = wide2uni->unichar; | |
ef416fc2 | 1141 | } |
e1d6a774 | 1142 | |
1143 | *workptr = 0; | |
1144 | ||
d6ae789d | 1145 | vmap->used --; |
e1d6a774 | 1146 | |
1147 | /* | |
1148 | * Convert internal UCS-4 to output UTF-8 (and delete BOM)... | |
1149 | */ | |
1150 | ||
1151 | return (cupsUTF32ToUTF8(dest, work, maxout)); | |
ef416fc2 | 1152 | } |
1153 | ||
e1d6a774 | 1154 | |
ef416fc2 | 1155 | /* |
e1d6a774 | 1156 | * 'free_sbcs_charmap()' - Free memory used by a single byte character set. |
ef416fc2 | 1157 | */ |
e1d6a774 | 1158 | |
1159 | static void | |
1160 | free_sbcs_charmap(_cups_cmap_t *cmap) /* I - Character set */ | |
ef416fc2 | 1161 | { |
e1d6a774 | 1162 | int i; /* Looping variable */ |
ef416fc2 | 1163 | |
ef416fc2 | 1164 | |
e1d6a774 | 1165 | for (i = 0; i < 256; i ++) |
1166 | if (cmap->uni2char[i]) | |
1167 | free(cmap->uni2char[i]); | |
1168 | ||
1169 | free(cmap); | |
1170 | } | |
1171 | ||
1172 | ||
1173 | /* | |
1174 | * 'free_vbcs_charmap()' - Free memory used by a variable byte character set. | |
1175 | */ | |
1176 | ||
1177 | static void | |
1178 | free_vbcs_charmap(_cups_vmap_t *vmap) /* I - Character set */ | |
1179 | { | |
1180 | int i; /* Looping variable */ | |
1181 | ||
1182 | ||
1183 | for (i = 0; i < 256; i ++) | |
1184 | if (vmap->char2uni[i]) | |
1185 | free(vmap->char2uni[i]); | |
1186 | ||
1187 | for (i = 0; i < 256; i ++) | |
1188 | if (vmap->uni2char[i]) | |
1189 | free(vmap->uni2char[i]); | |
1190 | ||
1191 | if (vmap->wide2uni) | |
1192 | free(vmap->wide2uni); | |
1193 | ||
1194 | free(vmap); | |
1195 | } | |
1196 | ||
1197 | ||
d6ae789d | 1198 | /* |
1199 | * 'get_charmap()' - Lookup or get a character set map (private). | |
1200 | * | |
1201 | * This code handles single-byte (SBCS), double-byte (DBCS), and | |
1202 | * variable-byte (VBCS) character sets _without_ charset escapes... | |
1203 | * This code does not handle multiple-byte character sets (MBCS) | |
1204 | * (such as ISO-2022-JP) with charset switching via escapes... | |
1205 | */ | |
1206 | ||
1207 | ||
d09495fa | 1208 | static void * /* O - Charset map pointer */ |
d6ae789d | 1209 | get_charmap( |
1210 | const cups_encoding_t encoding) /* I - Encoding */ | |
1211 | { | |
1212 | char filename[1024]; /* Filename for charset map file */ | |
1213 | _cups_globals_t *cg = _cupsGlobals(); /* Global data */ | |
1214 | ||
1215 | ||
1216 | /* | |
1217 | * Get the data directory and charset map name... | |
1218 | */ | |
1219 | ||
1220 | snprintf(filename, sizeof(filename), "%s/charmaps/%s.txt", | |
1221 | cg->cups_datadir, _cupsEncodingName(encoding)); | |
1222 | ||
1223 | DEBUG_printf((" filename=\"%s\"\n", filename)); | |
1224 | ||
1225 | /* | |
1226 | * Read charset map input file into cache... | |
1227 | */ | |
1228 | ||
1229 | if (encoding < CUPS_ENCODING_SBCS_END) | |
1230 | return (get_sbcs_charmap(encoding, filename)); | |
1231 | else if (encoding < CUPS_ENCODING_VBCS_END) | |
1232 | return (get_vbcs_charmap(encoding, filename)); | |
1233 | else | |
1234 | return (NULL); | |
1235 | } | |
1236 | ||
1237 | ||
e1d6a774 | 1238 | /* |
1239 | * 'get_charmap_count()' - Count lines in a charmap file. | |
1240 | */ | |
1241 | ||
1242 | static int /* O - Count or -1 on error */ | |
1243 | get_charmap_count(cups_file_t *fp) /* I - File to read from */ | |
1244 | { | |
1245 | int count; /* Number of lines */ | |
1246 | char line[256]; /* Line from input map file */ | |
ef416fc2 | 1247 | |
ef416fc2 | 1248 | |
1249 | /* | |
e1d6a774 | 1250 | * Count lines in map input file... |
ef416fc2 | 1251 | */ |
ef416fc2 | 1252 | |
e1d6a774 | 1253 | count = 0; |
ef416fc2 | 1254 | |
e1d6a774 | 1255 | while (cupsFileGets(fp, line, sizeof(line))) |
1256 | if (line[0] == '0') | |
1257 | count ++; | |
ef416fc2 | 1258 | |
e1d6a774 | 1259 | /* |
1260 | * Return the number of lines... | |
1261 | */ | |
1262 | ||
1263 | if (count > 0) | |
1264 | return (count); | |
1265 | else | |
1266 | return (-1); | |
ef416fc2 | 1267 | } |
1268 | ||
e1d6a774 | 1269 | |
ef416fc2 | 1270 | /* |
e1d6a774 | 1271 | * 'get_sbcs_charmap()' - Get SBCS Charmap. |
ef416fc2 | 1272 | */ |
e1d6a774 | 1273 | |
1274 | static _cups_cmap_t * /* O - Charmap or 0 on error */ | |
1275 | get_sbcs_charmap( | |
1276 | const cups_encoding_t encoding, /* I - Charmap Encoding */ | |
1277 | const char *filename) /* I - Charmap Filename */ | |
ef416fc2 | 1278 | { |
e1d6a774 | 1279 | unsigned long legchar; /* Legacy character value */ |
1280 | cups_utf32_t unichar; /* Unicode character value */ | |
1281 | _cups_cmap_t *cmap; /* Legacy SBCS / Unicode Charset Map */ | |
1282 | cups_file_t *fp; /* Charset map file pointer */ | |
1283 | char *s; /* Line parsing pointer */ | |
1284 | cups_ucs2_t *crow; /* Pointer to UCS-2 row in 'char2uni' */ | |
1285 | cups_sbcs_t *srow; /* Pointer to SBCS row in 'uni2char' */ | |
1286 | char line[256]; /* Line from charset map file */ | |
e1d6a774 | 1287 | |
ef416fc2 | 1288 | |
1289 | /* | |
e1d6a774 | 1290 | * See if we already have this SBCS charset map loaded... |
ef416fc2 | 1291 | */ |
e1d6a774 | 1292 | |
d6ae789d | 1293 | for (cmap = cmap_cache; cmap; cmap = cmap->next) |
e1d6a774 | 1294 | { |
1295 | if (cmap->encoding == encoding) | |
1296 | { | |
1297 | cmap->used ++; | |
1298 | DEBUG_printf((" returning existing cmap=%p\n", cmap)); | |
d6ae789d | 1299 | |
e1d6a774 | 1300 | return ((void *)cmap); |
1301 | } | |
1302 | } | |
ef416fc2 | 1303 | |
1304 | /* | |
e1d6a774 | 1305 | * Open SBCS charset map input file... |
ef416fc2 | 1306 | */ |
e1d6a774 | 1307 | |
1308 | if ((fp = cupsFileOpen(filename, "r")) == NULL) | |
1309 | return (NULL); | |
ef416fc2 | 1310 | |
1311 | /* | |
e1d6a774 | 1312 | * Allocate memory for SBCS charset map... |
ef416fc2 | 1313 | */ |
e1d6a774 | 1314 | |
1315 | if ((cmap = (_cups_cmap_t *)calloc(1, sizeof(_cups_cmap_t))) == NULL) | |
1316 | { | |
1317 | cupsFileClose(fp); | |
1318 | DEBUG_puts(" Unable to allocate memory!"); | |
d6ae789d | 1319 | |
e1d6a774 | 1320 | return (NULL); |
1321 | } | |
1322 | ||
1323 | cmap->used ++; | |
1324 | cmap->encoding = encoding; | |
ef416fc2 | 1325 | |
1326 | /* | |
e1d6a774 | 1327 | * Save SBCS charset map into memory for transcoding... |
ef416fc2 | 1328 | */ |
e1d6a774 | 1329 | |
1330 | while (cupsFileGets(fp, line, sizeof(line))) | |
ef416fc2 | 1331 | { |
e1d6a774 | 1332 | if (line[0] != '0') |
1333 | continue; | |
1334 | ||
1335 | legchar = strtol(line, &s, 16); | |
1336 | if (legchar < 0 || legchar > 0xff) | |
1337 | goto sbcs_error; | |
1338 | ||
1339 | unichar = strtol(s, NULL, 16); | |
1340 | if (unichar < 0 || unichar > 0xffff) | |
1341 | goto sbcs_error; | |
ef416fc2 | 1342 | |
1343 | /* | |
e1d6a774 | 1344 | * Save legacy to Unicode mapping in direct lookup table... |
ef416fc2 | 1345 | */ |
e1d6a774 | 1346 | |
1347 | crow = cmap->char2uni + legchar; | |
1348 | *crow = (cups_ucs2_t)(unichar & 0xffff); | |
ef416fc2 | 1349 | |
1350 | /* | |
e1d6a774 | 1351 | * Save Unicode to legacy mapping in indirect lookup table... |
ef416fc2 | 1352 | */ |
e1d6a774 | 1353 | |
1354 | srow = cmap->uni2char[(unichar >> 8) & 0xff]; | |
1355 | if (!srow) | |
ef416fc2 | 1356 | { |
e1d6a774 | 1357 | srow = (cups_sbcs_t *)calloc(256, sizeof(cups_sbcs_t)); |
1358 | if (!srow) | |
1359 | goto sbcs_error; | |
1360 | ||
1361 | cmap->uni2char[(unichar >> 8) & 0xff] = srow; | |
ef416fc2 | 1362 | } |
1363 | ||
e1d6a774 | 1364 | srow += unichar & 0xff; |
1365 | ||
ef416fc2 | 1366 | /* |
e1d6a774 | 1367 | * Convert Replacement Character to visible replacement... |
ef416fc2 | 1368 | */ |
e1d6a774 | 1369 | |
1370 | if (unichar == 0xfffd) | |
1371 | legchar = (unsigned long)'?'; | |
ef416fc2 | 1372 | |
1373 | /* | |
e1d6a774 | 1374 | * First (oldest) legacy character uses Unicode mapping cell... |
ef416fc2 | 1375 | */ |
ef416fc2 | 1376 | |
e1d6a774 | 1377 | if (!*srow) |
1378 | *srow = (cups_sbcs_t)legchar; | |
1379 | } | |
ef416fc2 | 1380 | |
e1d6a774 | 1381 | cupsFileClose(fp); |
1382 | ||
ef416fc2 | 1383 | /* |
e1d6a774 | 1384 | * Add it to the cache and return... |
ef416fc2 | 1385 | */ |
e1d6a774 | 1386 | |
d6ae789d | 1387 | cmap->next = cmap_cache; |
1388 | cmap_cache = cmap; | |
e1d6a774 | 1389 | |
1390 | DEBUG_printf((" returning new cmap=%p\n", cmap)); | |
1391 | ||
1392 | return (cmap); | |
ef416fc2 | 1393 | |
1394 | /* | |
e1d6a774 | 1395 | * If we get here, there was an error in the cmap file... |
ef416fc2 | 1396 | */ |
e1d6a774 | 1397 | |
1398 | sbcs_error: | |
1399 | ||
1400 | free_sbcs_charmap(cmap); | |
1401 | ||
1402 | cupsFileClose(fp); | |
1403 | ||
1404 | DEBUG_puts(" Error, returning NULL!"); | |
1405 | ||
1406 | return (NULL); | |
1407 | } | |
1408 | ||
1409 | ||
1410 | /* | |
1411 | * 'get_vbcs_charmap()' - Get DBCS/VBCS Charmap. | |
1412 | */ | |
1413 | ||
1414 | static _cups_vmap_t * /* O - Charmap or 0 on error */ | |
1415 | get_vbcs_charmap( | |
1416 | const cups_encoding_t encoding, /* I - Charmap Encoding */ | |
1417 | const char *filename) /* I - Charmap Filename */ | |
1418 | { | |
1419 | _cups_vmap_t *vmap; /* Legacy VBCS / Unicode Charset Map */ | |
1420 | cups_ucs2_t *crow; /* Pointer to UCS-2 row in 'char2uni' */ | |
1421 | cups_vbcs_t *vrow; /* Pointer to VBCS row in 'uni2char' */ | |
1422 | _cups_wide2uni_t *wide2uni; /* Pointer to row in 'wide2uni' */ | |
1423 | cups_sbcs_t leadchar; /* Lead char of 2-byte legacy char */ | |
1424 | unsigned long legchar; /* Legacy character value */ | |
1425 | cups_utf32_t unichar; /* Unicode character value */ | |
1426 | int mapcount; /* Count of lines in charmap file */ | |
1427 | cups_file_t *fp; /* Charset map file pointer */ | |
1428 | char *s; /* Line parsing pointer */ | |
1429 | char line[256]; /* Line from charset map file */ | |
1430 | int i; /* Loop variable */ | |
09a101d6 | 1431 | int legacy; /* 32-bit legacy char */ |
e1d6a774 | 1432 | |
1433 | ||
1434 | DEBUG_printf(("get_vbcs_charmap(encoding=%d, filename=\"%s\")\n", | |
1435 | encoding, filename)); | |
ef416fc2 | 1436 | |
1437 | /* | |
e1d6a774 | 1438 | * See if we already have this DBCS/VBCS charset map loaded... |
ef416fc2 | 1439 | */ |
ef416fc2 | 1440 | |
d6ae789d | 1441 | for (vmap = vmap_cache; vmap; vmap = vmap->next) |
e1d6a774 | 1442 | { |
1443 | if (vmap->encoding == encoding) | |
ef416fc2 | 1444 | { |
e1d6a774 | 1445 | vmap->used ++; |
1446 | DEBUG_printf((" returning existing vmap=%p\n", vmap)); | |
d6ae789d | 1447 | |
e1d6a774 | 1448 | return ((void *)vmap); |
ef416fc2 | 1449 | } |
ef416fc2 | 1450 | } |
ef416fc2 | 1451 | |
1452 | /* | |
e1d6a774 | 1453 | * Open VBCS charset map input file... |
ef416fc2 | 1454 | */ |
ef416fc2 | 1455 | |
e1d6a774 | 1456 | if ((fp = cupsFileOpen(filename, "r")) == NULL) |
1457 | { | |
1458 | DEBUG_printf((" Unable to open file: %s\n", strerror(errno))); | |
d6ae789d | 1459 | |
e1d6a774 | 1460 | return (NULL); |
1461 | } | |
ef416fc2 | 1462 | |
1463 | /* | |
e1d6a774 | 1464 | * Count lines in charmap file... |
ef416fc2 | 1465 | */ |
e1d6a774 | 1466 | |
1467 | if ((mapcount = get_charmap_count(fp)) <= 0) | |
1468 | { | |
1469 | DEBUG_puts(" Unable to get charmap count!"); | |
d6ae789d | 1470 | |
e1d6a774 | 1471 | return (NULL); |
1472 | } | |
1473 | ||
1474 | DEBUG_printf((" mapcount=%d\n", mapcount)); | |
ef416fc2 | 1475 | |
1476 | /* | |
e1d6a774 | 1477 | * Allocate memory for DBCS/VBCS charset map... |
ef416fc2 | 1478 | */ |
e1d6a774 | 1479 | |
1480 | if ((vmap = (_cups_vmap_t *)calloc(1, sizeof(_cups_vmap_t))) == NULL) | |
1481 | { | |
1482 | cupsFileClose(fp); | |
1483 | DEBUG_puts(" Unable to allocate memory!"); | |
d6ae789d | 1484 | |
e1d6a774 | 1485 | return (NULL); |
1486 | } | |
1487 | ||
1488 | vmap->used ++; | |
1489 | vmap->encoding = encoding; | |
ef416fc2 | 1490 | |
1491 | /* | |
e1d6a774 | 1492 | * Save DBCS/VBCS charset map into memory for transcoding... |
ef416fc2 | 1493 | */ |
e1d6a774 | 1494 | |
1495 | leadchar = 0; | |
1496 | wide2uni = NULL; | |
1497 | ||
1498 | cupsFileRewind(fp); | |
1499 | ||
09a101d6 | 1500 | i = 0; |
1501 | legacy = 0; | |
e1d6a774 | 1502 | |
1503 | while (cupsFileGets(fp, line, sizeof(line))) | |
ef416fc2 | 1504 | { |
e1d6a774 | 1505 | if (line[0] != '0') |
1506 | continue; | |
1507 | ||
1508 | legchar = strtoul(line, &s, 16); | |
1509 | if (legchar == ULONG_MAX) | |
1510 | goto vbcs_error; | |
1511 | ||
1512 | unichar = strtol(s, NULL, 16); | |
1513 | if (unichar < 0 || unichar > 0xffff) | |
1514 | goto vbcs_error; | |
1515 | ||
1516 | i ++; | |
1517 | ||
1518 | /* DEBUG_printf((" i=%d, legchar=0x%08lx, unichar=0x%04x\n", i, | |
1519 | legchar, (unsigned)unichar)); */ | |
ef416fc2 | 1520 | |
1521 | /* | |
e1d6a774 | 1522 | * Save lead char of 2/3/4-byte legacy char... |
ef416fc2 | 1523 | */ |
e1d6a774 | 1524 | |
1525 | if (legchar > 0xff && legchar <= 0xffff) | |
ef416fc2 | 1526 | { |
e1d6a774 | 1527 | leadchar = (cups_sbcs_t)(legchar >> 8); |
1528 | vmap->lead2char[leadchar] = leadchar; | |
1529 | } | |
1530 | ||
1531 | if (legchar > 0xffff && legchar <= 0xffffff) | |
1532 | { | |
1533 | leadchar = (cups_sbcs_t)(legchar >> 16); | |
1534 | vmap->lead3char[leadchar] = leadchar; | |
1535 | } | |
1536 | ||
1537 | if (legchar > 0xffffff) | |
1538 | { | |
1539 | leadchar = (cups_sbcs_t)(legchar >> 24); | |
1540 | vmap->lead4char[leadchar] = leadchar; | |
ef416fc2 | 1541 | } |
1542 | ||
1543 | /* | |
e1d6a774 | 1544 | * Save Legacy to Unicode mapping... |
ef416fc2 | 1545 | */ |
e1d6a774 | 1546 | |
1547 | if (legchar <= 0xffff) | |
ef416fc2 | 1548 | { |
ef416fc2 | 1549 | /* |
e1d6a774 | 1550 | * Save DBCS 16-bit to Unicode mapping in indirect lookup table... |
ef416fc2 | 1551 | */ |
e1d6a774 | 1552 | |
1553 | crow = vmap->char2uni[(int)leadchar]; | |
1554 | if (!crow) | |
1555 | { | |
1556 | crow = (cups_ucs2_t *)calloc(256, sizeof(cups_ucs2_t)); | |
1557 | if (!crow) | |
1558 | goto vbcs_error; | |
1559 | ||
1560 | vmap->char2uni[(int)leadchar] = crow; | |
1561 | } | |
1562 | ||
1563 | crow[(int)(legchar & 0xff)] = (cups_ucs2_t)unichar; | |
1564 | } | |
1565 | else | |
1566 | { | |
1567 | /* | |
1568 | * Save VBCS 32-bit to Unicode mapping in sorted list table... | |
1569 | */ | |
1570 | ||
09a101d6 | 1571 | if (!legacy) |
e1d6a774 | 1572 | { |
09a101d6 | 1573 | legacy = 1; |
e1d6a774 | 1574 | vmap->widecount = (mapcount - i + 1); |
1575 | wide2uni = (_cups_wide2uni_t *)calloc(vmap->widecount, | |
1576 | sizeof(_cups_wide2uni_t)); | |
1577 | if (!wide2uni) | |
1578 | goto vbcs_error; | |
1579 | ||
1580 | vmap->wide2uni = wide2uni; | |
1581 | } | |
1582 | ||
1583 | wide2uni->widechar = (cups_vbcs_t)legchar; | |
1584 | wide2uni->unichar = (cups_ucs2_t)unichar; | |
1585 | wide2uni ++; | |
ef416fc2 | 1586 | } |
1587 | ||
1588 | /* | |
e1d6a774 | 1589 | * Save Unicode to legacy mapping in indirect lookup table... |
ef416fc2 | 1590 | */ |
e1d6a774 | 1591 | |
1592 | vrow = vmap->uni2char[(int)((unichar >> 8) & 0xff)]; | |
1593 | if (!vrow) | |
ef416fc2 | 1594 | { |
e1d6a774 | 1595 | vrow = (cups_vbcs_t *)calloc(256, sizeof(cups_vbcs_t)); |
1596 | if (!vrow) | |
1597 | goto vbcs_error; | |
1598 | ||
1599 | vmap->uni2char[(int) ((unichar >> 8) & 0xff)] = vrow; | |
ef416fc2 | 1600 | } |
e1d6a774 | 1601 | |
1602 | vrow += (int)(unichar & 0xff); | |
ef416fc2 | 1603 | |
1604 | /* | |
e1d6a774 | 1605 | * Convert Replacement Character to visible replacement... |
ef416fc2 | 1606 | */ |
e1d6a774 | 1607 | |
1608 | if (unichar == 0xfffd) | |
1609 | legchar = (unsigned long)'?'; | |
ef416fc2 | 1610 | |
1611 | /* | |
e1d6a774 | 1612 | * First (oldest) legacy character uses Unicode mapping cell... |
ef416fc2 | 1613 | */ |
e1d6a774 | 1614 | |
1615 | if (!*vrow) | |
1616 | *vrow = (cups_vbcs_t)legchar; | |
ef416fc2 | 1617 | } |
e1d6a774 | 1618 | |
1619 | vmap->charcount = (i - vmap->widecount); | |
1620 | ||
1621 | cupsFileClose(fp); | |
ef416fc2 | 1622 | |
1623 | /* | |
e1d6a774 | 1624 | * Add it to the cache and return... |
ef416fc2 | 1625 | */ |
ef416fc2 | 1626 | |
d6ae789d | 1627 | vmap->next = vmap_cache; |
1628 | vmap_cache = vmap; | |
e1d6a774 | 1629 | |
1630 | DEBUG_printf((" returning new vmap=%p\n", vmap)); | |
1631 | ||
1632 | return (vmap); | |
1633 | ||
1634 | /* | |
1635 | * If we get here, the file contains errors... | |
1636 | */ | |
1637 | ||
1638 | vbcs_error: | |
1639 | ||
1640 | free_vbcs_charmap(vmap); | |
1641 | ||
1642 | cupsFileClose(fp); | |
1643 | ||
1644 | DEBUG_puts(" Error, returning NULL!"); | |
1645 | ||
1646 | return (NULL); | |
ef416fc2 | 1647 | } |
1648 | ||
1649 | ||
1650 | /* | |
bc44d920 | 1651 | * End of "$Id: transcode.c 6649 2007-07-11 21:46:42Z mike $" |
ef416fc2 | 1652 | */ |