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Commit | Line | Data |
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ef416fc2 | 1 | /* |
f2d18633 | 2 | * "$Id$" |
ef416fc2 | 3 | * |
7e86f2f6 | 4 | * String functions for CUPS. |
ef416fc2 | 5 | * |
7e86f2f6 MS |
6 | * Copyright 2007-2014 by Apple Inc. |
7 | * Copyright 1997-2007 by Easy Software Products. | |
ef416fc2 | 8 | * |
7e86f2f6 MS |
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 | * |
7e86f2f6 | 15 | * This file is subject to the Apple OS-Developed Software exception. |
ef416fc2 | 16 | */ |
17 | ||
18 | /* | |
19 | * Include necessary headers... | |
20 | */ | |
21 | ||
7cf5915e | 22 | #define _CUPS_STRING_C_ |
554aa7b7 | 23 | #include "cups-private.h" |
745129be | 24 | #include <stddef.h> |
4400e98d | 25 | #include <limits.h> |
d6ae789d | 26 | |
27 | ||
28 | /* | |
29 | * Local globals... | |
30 | */ | |
31 | ||
6d2f911b | 32 | static _cups_mutex_t sp_mutex = _CUPS_MUTEX_INITIALIZER; |
d6ae789d | 33 | /* Mutex to control access to pool */ |
d6ae789d | 34 | static cups_array_t *stringpool = NULL; |
35 | /* Global string pool */ | |
4400e98d | 36 | |
37 | ||
38 | /* | |
39 | * Local functions... | |
40 | */ | |
41 | ||
42 | static int compare_sp_items(_cups_sp_item_t *a, _cups_sp_item_t *b); | |
43 | ||
44 | ||
45 | /* | |
757d2cad | 46 | * '_cupsStrAlloc()' - Allocate/reference a string. |
4400e98d | 47 | */ |
48 | ||
49 | char * /* O - String pointer */ | |
757d2cad | 50 | _cupsStrAlloc(const char *s) /* I - String */ |
4400e98d | 51 | { |
5a9febac | 52 | size_t slen; /* Length of string */ |
4400e98d | 53 | _cups_sp_item_t *item, /* String pool item */ |
426c6a59 | 54 | *key; /* Search key */ |
4400e98d | 55 | |
56 | ||
57 | /* | |
58 | * Range check input... | |
59 | */ | |
60 | ||
61 | if (!s) | |
62 | return (NULL); | |
63 | ||
64 | /* | |
65 | * Get the string pool... | |
66 | */ | |
67 | ||
6d2f911b | 68 | _cupsMutexLock(&sp_mutex); |
d6ae789d | 69 | |
70 | if (!stringpool) | |
71 | stringpool = cupsArrayNew((cups_array_func_t)compare_sp_items, NULL); | |
4400e98d | 72 | |
d6ae789d | 73 | if (!stringpool) |
74 | { | |
6d2f911b | 75 | _cupsMutexUnlock(&sp_mutex); |
4400e98d | 76 | |
4400e98d | 77 | return (NULL); |
d6ae789d | 78 | } |
4400e98d | 79 | |
80 | /* | |
81 | * See if the string is already in the pool... | |
82 | */ | |
83 | ||
745129be | 84 | key = (_cups_sp_item_t *)(s - offsetof(_cups_sp_item_t, str)); |
4400e98d | 85 | |
426c6a59 | 86 | if ((item = (_cups_sp_item_t *)cupsArrayFind(stringpool, key)) != NULL) |
4400e98d | 87 | { |
88 | /* | |
89 | * Found it, return the cached string... | |
90 | */ | |
91 | ||
92 | item->ref_count ++; | |
93 | ||
745129be | 94 | #ifdef DEBUG_GUARDS |
e07d4801 MS |
95 | DEBUG_printf(("5_cupsStrAlloc: Using string %p(%s) for \"%s\", guard=%08x, " |
96 | "ref_count=%d", item, item->str, s, item->guard, | |
745129be MS |
97 | item->ref_count)); |
98 | ||
99 | if (item->guard != _CUPS_STR_GUARD) | |
100 | abort(); | |
101 | #endif /* DEBUG_GUARDS */ | |
102 | ||
6d2f911b | 103 | _cupsMutexUnlock(&sp_mutex); |
d6ae789d | 104 | |
4400e98d | 105 | return (item->str); |
106 | } | |
107 | ||
108 | /* | |
109 | * Not found, so allocate a new one... | |
110 | */ | |
111 | ||
5a9febac MS |
112 | slen = strlen(s); |
113 | item = (_cups_sp_item_t *)calloc(1, sizeof(_cups_sp_item_t) + slen); | |
4400e98d | 114 | if (!item) |
d6ae789d | 115 | { |
6d2f911b | 116 | _cupsMutexUnlock(&sp_mutex); |
d6ae789d | 117 | |
4400e98d | 118 | return (NULL); |
d6ae789d | 119 | } |
4400e98d | 120 | |
121 | item->ref_count = 1; | |
5a9febac | 122 | memcpy(item->str, s, slen + 1); |
4400e98d | 123 | |
745129be MS |
124 | #ifdef DEBUG_GUARDS |
125 | item->guard = _CUPS_STR_GUARD; | |
126 | ||
e07d4801 MS |
127 | DEBUG_printf(("5_cupsStrAlloc: Created string %p(%s) for \"%s\", guard=%08x, " |
128 | "ref_count=%d", item, item->str, s, item->guard, | |
745129be MS |
129 | item->ref_count)); |
130 | #endif /* DEBUG_GUARDS */ | |
131 | ||
4400e98d | 132 | /* |
133 | * Add the string to the pool and return it... | |
134 | */ | |
135 | ||
d6ae789d | 136 | cupsArrayAdd(stringpool, item); |
137 | ||
6d2f911b | 138 | _cupsMutexUnlock(&sp_mutex); |
4400e98d | 139 | |
140 | return (item->str); | |
141 | } | |
142 | ||
143 | ||
554aa7b7 MS |
144 | /* |
145 | * '_cupsStrDate()' - Return a localized date for a given time value. | |
146 | * | |
147 | * This function works around the locale encoding issues of strftime... | |
148 | */ | |
149 | ||
150 | char * /* O - Buffer */ | |
151 | _cupsStrDate(char *buf, /* I - Buffer */ | |
152 | size_t bufsize, /* I - Size of buffer */ | |
153 | time_t timeval) /* I - Time value */ | |
154 | { | |
155 | struct tm *dateval; /* Local date/time */ | |
156 | char temp[1024]; /* Temporary buffer */ | |
157 | _cups_globals_t *cg = _cupsGlobals(); /* Per-thread globals */ | |
158 | ||
159 | ||
160 | if (!cg->lang_default) | |
161 | cg->lang_default = cupsLangDefault(); | |
162 | ||
163 | dateval = localtime(&timeval); | |
164 | ||
165 | if (cg->lang_default->encoding != CUPS_UTF8) | |
166 | { | |
167 | strftime(temp, sizeof(temp), "%c", dateval); | |
168 | cupsCharsetToUTF8((cups_utf8_t *)buf, temp, (int)bufsize, cg->lang_default->encoding); | |
169 | } | |
170 | else | |
171 | strftime(buf, bufsize, "%c", dateval); | |
172 | ||
173 | return (buf); | |
174 | } | |
175 | ||
176 | ||
4400e98d | 177 | /* |
426c6a59 | 178 | * '_cupsStrFlush()' - Flush the string pool. |
4400e98d | 179 | */ |
180 | ||
181 | void | |
d6ae789d | 182 | _cupsStrFlush(void) |
4400e98d | 183 | { |
184 | _cups_sp_item_t *item; /* Current item */ | |
185 | ||
186 | ||
e07d4801 | 187 | DEBUG_printf(("4_cupsStrFlush: %d strings in array", |
ae71f5de | 188 | cupsArrayCount(stringpool))); |
d6ae789d | 189 | |
6d2f911b | 190 | _cupsMutexLock(&sp_mutex); |
d6ae789d | 191 | |
192 | for (item = (_cups_sp_item_t *)cupsArrayFirst(stringpool); | |
4400e98d | 193 | item; |
d6ae789d | 194 | item = (_cups_sp_item_t *)cupsArrayNext(stringpool)) |
4400e98d | 195 | free(item); |
4400e98d | 196 | |
d6ae789d | 197 | cupsArrayDelete(stringpool); |
198 | stringpool = NULL; | |
199 | ||
6d2f911b | 200 | _cupsMutexUnlock(&sp_mutex); |
4400e98d | 201 | } |
202 | ||
203 | ||
204 | /* | |
757d2cad | 205 | * '_cupsStrFormatd()' - Format a floating-point number. |
206 | */ | |
207 | ||
208 | char * /* O - Pointer to end of string */ | |
209 | _cupsStrFormatd(char *buf, /* I - String */ | |
210 | char *bufend, /* I - End of string buffer */ | |
211 | double number, /* I - Number to format */ | |
212 | struct lconv *loc) /* I - Locale data */ | |
213 | { | |
214 | char *bufptr, /* Pointer into buffer */ | |
215 | temp[1024], /* Temporary string */ | |
216 | *tempdec, /* Pointer to decimal point */ | |
217 | *tempptr; /* Pointer into temporary string */ | |
218 | const char *dec; /* Decimal point */ | |
219 | int declen; /* Length of decimal point */ | |
220 | ||
221 | ||
222 | /* | |
223 | * Format the number using the "%.12f" format and then eliminate | |
224 | * unnecessary trailing 0's. | |
225 | */ | |
226 | ||
227 | snprintf(temp, sizeof(temp), "%.12f", number); | |
228 | for (tempptr = temp + strlen(temp) - 1; | |
229 | tempptr > temp && *tempptr == '0'; | |
230 | *tempptr-- = '\0'); | |
231 | ||
232 | /* | |
233 | * Next, find the decimal point... | |
234 | */ | |
235 | ||
236 | if (loc && loc->decimal_point) | |
237 | { | |
238 | dec = loc->decimal_point; | |
b86bc4cf | 239 | declen = (int)strlen(dec); |
757d2cad | 240 | } |
241 | else | |
242 | { | |
243 | dec = "."; | |
244 | declen = 1; | |
245 | } | |
246 | ||
247 | if (declen == 1) | |
248 | tempdec = strchr(temp, *dec); | |
249 | else | |
250 | tempdec = strstr(temp, dec); | |
251 | ||
252 | /* | |
253 | * Copy everything up to the decimal point... | |
254 | */ | |
255 | ||
256 | if (tempdec) | |
257 | { | |
258 | for (tempptr = temp, bufptr = buf; | |
259 | tempptr < tempdec && bufptr < bufend; | |
260 | *bufptr++ = *tempptr++); | |
261 | ||
7594b224 | 262 | tempptr += declen; |
757d2cad | 263 | |
7594b224 | 264 | if (*tempptr && bufptr < bufend) |
757d2cad | 265 | { |
266 | *bufptr++ = '.'; | |
267 | ||
268 | while (*tempptr && bufptr < bufend) | |
269 | *bufptr++ = *tempptr++; | |
270 | } | |
271 | ||
272 | *bufptr = '\0'; | |
273 | } | |
274 | else | |
275 | { | |
07623986 | 276 | strlcpy(buf, temp, (size_t)(bufend - buf + 1)); |
757d2cad | 277 | bufptr = buf + strlen(buf); |
278 | } | |
279 | ||
280 | return (bufptr); | |
281 | } | |
282 | ||
283 | ||
284 | /* | |
285 | * '_cupsStrFree()' - Free/dereference a string. | |
4400e98d | 286 | */ |
287 | ||
288 | void | |
757d2cad | 289 | _cupsStrFree(const char *s) /* I - String to free */ |
4400e98d | 290 | { |
4400e98d | 291 | _cups_sp_item_t *item, /* String pool item */ |
426c6a59 | 292 | *key; /* Search key */ |
4400e98d | 293 | |
294 | ||
295 | /* | |
296 | * Range check input... | |
297 | */ | |
298 | ||
299 | if (!s) | |
300 | return; | |
301 | ||
302 | /* | |
d6ae789d | 303 | * Check the string pool... |
304 | * | |
305 | * We don't need to lock the mutex yet, as we only want to know if | |
306 | * the stringpool is initialized. The rest of the code will still | |
307 | * work if it is initialized before we lock... | |
4400e98d | 308 | */ |
309 | ||
d6ae789d | 310 | if (!stringpool) |
4400e98d | 311 | return; |
312 | ||
313 | /* | |
314 | * See if the string is already in the pool... | |
315 | */ | |
316 | ||
6d2f911b | 317 | _cupsMutexLock(&sp_mutex); |
d6ae789d | 318 | |
745129be MS |
319 | key = (_cups_sp_item_t *)(s - offsetof(_cups_sp_item_t, str)); |
320 | ||
321 | #ifdef DEBUG_GUARDS | |
322 | if (key->guard != _CUPS_STR_GUARD) | |
323 | { | |
e07d4801 MS |
324 | DEBUG_printf(("5_cupsStrFree: Freeing string %p(%s), guard=%08x, " |
325 | "ref_count=%d", key, key->str, key->guard, key->ref_count)); | |
745129be MS |
326 | abort(); |
327 | } | |
328 | #endif /* DEBUG_GUARDS */ | |
4400e98d | 329 | |
426c6a59 MS |
330 | if ((item = (_cups_sp_item_t *)cupsArrayFind(stringpool, key)) != NULL && |
331 | item == key) | |
4400e98d | 332 | { |
333 | /* | |
334 | * Found it, dereference... | |
335 | */ | |
336 | ||
337 | item->ref_count --; | |
338 | ||
339 | if (!item->ref_count) | |
340 | { | |
341 | /* | |
342 | * Remove and free... | |
343 | */ | |
344 | ||
d6ae789d | 345 | cupsArrayRemove(stringpool, item); |
4400e98d | 346 | |
4400e98d | 347 | free(item); |
348 | } | |
349 | } | |
d6ae789d | 350 | |
6d2f911b | 351 | _cupsMutexUnlock(&sp_mutex); |
4400e98d | 352 | } |
353 | ||
354 | ||
426c6a59 MS |
355 | /* |
356 | * '_cupsStrRetain()' - Increment the reference count of a string. | |
357 | * | |
358 | * Note: This function does not verify that the passed pointer is in the | |
359 | * string pool, so any calls to it MUST know they are passing in a | |
360 | * good pointer. | |
361 | */ | |
362 | ||
363 | char * /* O - Pointer to string */ | |
e07d4801 | 364 | _cupsStrRetain(const char *s) /* I - String to retain */ |
426c6a59 MS |
365 | { |
366 | _cups_sp_item_t *item; /* Pointer to string pool item */ | |
367 | ||
368 | ||
369 | if (s) | |
370 | { | |
745129be MS |
371 | item = (_cups_sp_item_t *)(s - offsetof(_cups_sp_item_t, str)); |
372 | ||
373 | #ifdef DEBUG_GUARDS | |
374 | if (item->guard != _CUPS_STR_GUARD) | |
375 | { | |
e07d4801 MS |
376 | DEBUG_printf(("5_cupsStrRetain: Retaining string %p(%s), guard=%08x, " |
377 | "ref_count=%d", item, s, item->guard, item->ref_count)); | |
745129be MS |
378 | abort(); |
379 | } | |
380 | #endif /* DEBUG_GUARDS */ | |
426c6a59 | 381 | |
6d2f911b | 382 | _cupsMutexLock(&sp_mutex); |
426c6a59 MS |
383 | |
384 | item->ref_count ++; | |
385 | ||
6d2f911b | 386 | _cupsMutexUnlock(&sp_mutex); |
426c6a59 MS |
387 | } |
388 | ||
e07d4801 | 389 | return ((char *)s); |
426c6a59 MS |
390 | } |
391 | ||
392 | ||
4400e98d | 393 | /* |
757d2cad | 394 | * '_cupsStrScand()' - Scan a string for a floating-point number. |
395 | * | |
396 | * This function handles the locale-specific BS so that a decimal | |
397 | * point is always the period (".")... | |
398 | */ | |
399 | ||
400 | double /* O - Number */ | |
401 | _cupsStrScand(const char *buf, /* I - Pointer to number */ | |
402 | char **bufptr, /* O - New pointer or NULL on error */ | |
403 | struct lconv *loc) /* I - Locale data */ | |
404 | { | |
405 | char temp[1024], /* Temporary buffer */ | |
406 | *tempptr; /* Pointer into temporary buffer */ | |
407 | ||
408 | ||
409 | /* | |
410 | * Range check input... | |
411 | */ | |
412 | ||
413 | if (!buf) | |
414 | return (0.0); | |
415 | ||
416 | /* | |
417 | * Skip leading whitespace... | |
418 | */ | |
419 | ||
7cf5915e | 420 | while (_cups_isspace(*buf)) |
757d2cad | 421 | buf ++; |
422 | ||
423 | /* | |
424 | * Copy leading sign, numbers, period, and then numbers... | |
425 | */ | |
426 | ||
427 | tempptr = temp; | |
428 | if (*buf == '-' || *buf == '+') | |
429 | *tempptr++ = *buf++; | |
430 | ||
431 | while (isdigit(*buf & 255)) | |
432 | if (tempptr < (temp + sizeof(temp) - 1)) | |
433 | *tempptr++ = *buf++; | |
434 | else | |
435 | { | |
436 | if (bufptr) | |
437 | *bufptr = NULL; | |
438 | ||
439 | return (0.0); | |
440 | } | |
441 | ||
442 | if (*buf == '.') | |
443 | { | |
e1d6a774 | 444 | /* |
445 | * Read fractional portion of number... | |
446 | */ | |
447 | ||
448 | buf ++; | |
449 | ||
757d2cad | 450 | if (loc && loc->decimal_point) |
451 | { | |
7e86f2f6 | 452 | strlcpy(tempptr, loc->decimal_point, sizeof(temp) - (size_t)(tempptr - temp)); |
757d2cad | 453 | tempptr += strlen(tempptr); |
454 | } | |
455 | else if (tempptr < (temp + sizeof(temp) - 1)) | |
456 | *tempptr++ = '.'; | |
457 | else | |
458 | { | |
459 | if (bufptr) | |
460 | *bufptr = NULL; | |
461 | ||
462 | return (0.0); | |
463 | } | |
464 | ||
465 | while (isdigit(*buf & 255)) | |
466 | if (tempptr < (temp + sizeof(temp) - 1)) | |
467 | *tempptr++ = *buf++; | |
468 | else | |
469 | { | |
470 | if (bufptr) | |
471 | *bufptr = NULL; | |
472 | ||
473 | return (0.0); | |
474 | } | |
475 | } | |
476 | ||
b86bc4cf | 477 | if (*buf == 'e' || *buf == 'E') |
478 | { | |
479 | /* | |
480 | * Read exponent... | |
481 | */ | |
482 | ||
483 | if (tempptr < (temp + sizeof(temp) - 1)) | |
484 | *tempptr++ = *buf++; | |
485 | else | |
486 | { | |
487 | if (bufptr) | |
488 | *bufptr = NULL; | |
489 | ||
490 | return (0.0); | |
491 | } | |
492 | ||
493 | if (*buf == '+' || *buf == '-') | |
494 | { | |
495 | if (tempptr < (temp + sizeof(temp) - 1)) | |
496 | *tempptr++ = *buf++; | |
497 | else | |
498 | { | |
499 | if (bufptr) | |
500 | *bufptr = NULL; | |
501 | ||
502 | return (0.0); | |
503 | } | |
504 | } | |
505 | ||
506 | while (isdigit(*buf & 255)) | |
507 | if (tempptr < (temp + sizeof(temp) - 1)) | |
508 | *tempptr++ = *buf++; | |
509 | else | |
510 | { | |
511 | if (bufptr) | |
512 | *bufptr = NULL; | |
513 | ||
514 | return (0.0); | |
515 | } | |
516 | } | |
517 | ||
757d2cad | 518 | /* |
519 | * Nul-terminate the temporary string and return the value... | |
520 | */ | |
521 | ||
522 | if (bufptr) | |
523 | *bufptr = (char *)buf; | |
524 | ||
525 | *tempptr = '\0'; | |
526 | ||
527 | return (strtod(temp, NULL)); | |
528 | } | |
529 | ||
530 | ||
531 | /* | |
532 | * '_cupsStrStatistics()' - Return allocation statistics for string pool. | |
4400e98d | 533 | */ |
534 | ||
535 | size_t /* O - Number of strings */ | |
757d2cad | 536 | _cupsStrStatistics(size_t *alloc_bytes, /* O - Allocated bytes */ |
537 | size_t *total_bytes) /* O - Total string bytes */ | |
4400e98d | 538 | { |
539 | size_t count, /* Number of strings */ | |
540 | abytes, /* Allocated string bytes */ | |
541 | tbytes, /* Total string bytes */ | |
542 | len; /* Length of string */ | |
543 | _cups_sp_item_t *item; /* Current item */ | |
4400e98d | 544 | |
545 | ||
546 | /* | |
547 | * Loop through strings in pool, counting everything up... | |
548 | */ | |
549 | ||
6d2f911b | 550 | _cupsMutexLock(&sp_mutex); |
4400e98d | 551 | |
552 | for (count = 0, abytes = 0, tbytes = 0, | |
d6ae789d | 553 | item = (_cups_sp_item_t *)cupsArrayFirst(stringpool); |
4400e98d | 554 | item; |
d6ae789d | 555 | item = (_cups_sp_item_t *)cupsArrayNext(stringpool)) |
4400e98d | 556 | { |
557 | /* | |
558 | * Count allocated memory, using a 64-bit aligned buffer as a basis. | |
559 | */ | |
560 | ||
561 | count += item->ref_count; | |
7e86f2f6 | 562 | len = (strlen(item->str) + 8) & (size_t)~7; |
4400e98d | 563 | abytes += sizeof(_cups_sp_item_t) + len; |
564 | tbytes += item->ref_count * len; | |
565 | } | |
566 | ||
6d2f911b | 567 | _cupsMutexUnlock(&sp_mutex); |
d6ae789d | 568 | |
4400e98d | 569 | /* |
570 | * Return values... | |
571 | */ | |
572 | ||
573 | if (alloc_bytes) | |
574 | *alloc_bytes = abytes; | |
575 | ||
576 | if (total_bytes) | |
577 | *total_bytes = tbytes; | |
578 | ||
579 | return (count); | |
580 | } | |
ef416fc2 | 581 | |
582 | ||
583 | /* | |
584 | * '_cups_strcpy()' - Copy a string allowing for overlapping strings. | |
585 | */ | |
586 | ||
587 | void | |
588 | _cups_strcpy(char *dst, /* I - Destination string */ | |
88f9aafc | 589 | const char *src) /* I - Source string */ |
ef416fc2 | 590 | { |
591 | while (*src) | |
592 | *dst++ = *src++; | |
593 | ||
594 | *dst = '\0'; | |
595 | } | |
596 | ||
597 | ||
598 | /* | |
599 | * '_cups_strdup()' - Duplicate a string. | |
600 | */ | |
601 | ||
602 | #ifndef HAVE_STRDUP | |
603 | char * /* O - New string pointer */ | |
604 | _cups_strdup(const char *s) /* I - String to duplicate */ | |
605 | { | |
5a9febac MS |
606 | char *t; /* New string pointer */ |
607 | size_t slen; /* Length of string */ | |
ef416fc2 | 608 | |
609 | ||
5a9febac | 610 | if (!s) |
ef416fc2 | 611 | return (NULL); |
612 | ||
5a9febac MS |
613 | slen = strlen(s); |
614 | if ((t = malloc(slen + 1)) == NULL) | |
ef416fc2 | 615 | return (NULL); |
616 | ||
5a9febac | 617 | return (memcpy(t, s, slen + 1)); |
ef416fc2 | 618 | } |
619 | #endif /* !HAVE_STRDUP */ | |
620 | ||
621 | ||
622 | /* | |
623 | * '_cups_strcasecmp()' - Do a case-insensitive comparison. | |
624 | */ | |
625 | ||
ef416fc2 | 626 | int /* O - Result of comparison (-1, 0, or 1) */ |
627 | _cups_strcasecmp(const char *s, /* I - First string */ | |
88f9aafc | 628 | const char *t) /* I - Second string */ |
ef416fc2 | 629 | { |
630 | while (*s != '\0' && *t != '\0') | |
631 | { | |
88f9aafc | 632 | if (_cups_tolower(*s) < _cups_tolower(*t)) |
ef416fc2 | 633 | return (-1); |
88f9aafc | 634 | else if (_cups_tolower(*s) > _cups_tolower(*t)) |
ef416fc2 | 635 | return (1); |
636 | ||
637 | s ++; | |
638 | t ++; | |
639 | } | |
640 | ||
641 | if (*s == '\0' && *t == '\0') | |
642 | return (0); | |
643 | else if (*s != '\0') | |
644 | return (1); | |
645 | else | |
646 | return (-1); | |
647 | } | |
ef416fc2 | 648 | |
649 | /* | |
650 | * '_cups_strncasecmp()' - Do a case-insensitive comparison on up to N chars. | |
651 | */ | |
652 | ||
ef416fc2 | 653 | int /* O - Result of comparison (-1, 0, or 1) */ |
654 | _cups_strncasecmp(const char *s, /* I - First string */ | |
0a682745 | 655 | const char *t, /* I - Second string */ |
ef416fc2 | 656 | size_t n) /* I - Maximum number of characters to compare */ |
657 | { | |
658 | while (*s != '\0' && *t != '\0' && n > 0) | |
659 | { | |
88f9aafc | 660 | if (_cups_tolower(*s) < _cups_tolower(*t)) |
ef416fc2 | 661 | return (-1); |
88f9aafc | 662 | else if (_cups_tolower(*s) > _cups_tolower(*t)) |
ef416fc2 | 663 | return (1); |
664 | ||
665 | s ++; | |
666 | t ++; | |
667 | n --; | |
668 | } | |
669 | ||
670 | if (n == 0) | |
671 | return (0); | |
672 | else if (*s == '\0' && *t == '\0') | |
673 | return (0); | |
674 | else if (*s != '\0') | |
675 | return (1); | |
676 | else | |
677 | return (-1); | |
678 | } | |
ef416fc2 | 679 | |
680 | ||
681 | #ifndef HAVE_STRLCAT | |
682 | /* | |
683 | * '_cups_strlcat()' - Safely concatenate two strings. | |
684 | */ | |
685 | ||
686 | size_t /* O - Length of string */ | |
687 | _cups_strlcat(char *dst, /* O - Destination string */ | |
688 | const char *src, /* I - Source string */ | |
689 | size_t size) /* I - Size of destination string buffer */ | |
690 | { | |
691 | size_t srclen; /* Length of source string */ | |
692 | size_t dstlen; /* Length of destination string */ | |
693 | ||
694 | ||
695 | /* | |
696 | * Figure out how much room is left... | |
697 | */ | |
698 | ||
699 | dstlen = strlen(dst); | |
700 | size -= dstlen + 1; | |
701 | ||
702 | if (!size) | |
703 | return (dstlen); /* No room, return immediately... */ | |
704 | ||
705 | /* | |
706 | * Figure out how much room is needed... | |
707 | */ | |
708 | ||
709 | srclen = strlen(src); | |
710 | ||
711 | /* | |
712 | * Copy the appropriate amount... | |
713 | */ | |
714 | ||
715 | if (srclen > size) | |
716 | srclen = size; | |
717 | ||
7e86f2f6 | 718 | memmove(dst + dstlen, src, srclen); |
ef416fc2 | 719 | dst[dstlen + srclen] = '\0'; |
720 | ||
721 | return (dstlen + srclen); | |
722 | } | |
723 | #endif /* !HAVE_STRLCAT */ | |
724 | ||
725 | ||
726 | #ifndef HAVE_STRLCPY | |
727 | /* | |
728 | * '_cups_strlcpy()' - Safely copy two strings. | |
729 | */ | |
730 | ||
731 | size_t /* O - Length of string */ | |
732 | _cups_strlcpy(char *dst, /* O - Destination string */ | |
733 | const char *src, /* I - Source string */ | |
734 | size_t size) /* I - Size of destination string buffer */ | |
735 | { | |
736 | size_t srclen; /* Length of source string */ | |
737 | ||
738 | ||
739 | /* | |
740 | * Figure out how much room is needed... | |
741 | */ | |
742 | ||
743 | size --; | |
744 | ||
745 | srclen = strlen(src); | |
746 | ||
747 | /* | |
748 | * Copy the appropriate amount... | |
749 | */ | |
750 | ||
751 | if (srclen > size) | |
752 | srclen = size; | |
753 | ||
7e86f2f6 | 754 | memmove(dst, src, srclen); |
ef416fc2 | 755 | dst[srclen] = '\0'; |
756 | ||
757 | return (srclen); | |
758 | } | |
759 | #endif /* !HAVE_STRLCPY */ | |
760 | ||
761 | ||
762 | /* | |
4400e98d | 763 | * 'compare_sp_items()' - Compare two string pool items... |
764 | */ | |
765 | ||
766 | static int /* O - Result of comparison */ | |
767 | compare_sp_items(_cups_sp_item_t *a, /* I - First item */ | |
768 | _cups_sp_item_t *b) /* I - Second item */ | |
769 | { | |
770 | return (strcmp(a->str, b->str)); | |
771 | } | |
772 | ||
773 | ||
774 | /* | |
f2d18633 | 775 | * End of "$Id$". |
ef416fc2 | 776 | */ |