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Commit | Line | Data |
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ef416fc2 | 1 | /* |
7e86f2f6 | 2 | * Option routines for CUPS. |
ef416fc2 | 3 | * |
98d88c8d | 4 | * Copyright 2007-2017 by Apple Inc. |
7e86f2f6 | 5 | * Copyright 1997-2007 by Easy Software Products. |
ef416fc2 | 6 | * |
e3101897 | 7 | * Licensed under Apache License v2.0. See the file "LICENSE" for more information. |
ef416fc2 | 8 | */ |
9 | ||
10 | /* | |
11 | * Include necessary headers... | |
12 | */ | |
13 | ||
7cf5915e | 14 | #include "cups-private.h" |
ef416fc2 | 15 | |
16 | ||
426c6a59 MS |
17 | /* |
18 | * Local functions... | |
19 | */ | |
20 | ||
21 | static int cups_compare_options(cups_option_t *a, cups_option_t *b); | |
22 | static int cups_find_option(const char *name, int num_options, | |
23 | cups_option_t *option, int prev, int *rdiff); | |
24 | ||
25 | ||
0d7cb94a MS |
26 | /* |
27 | * 'cupsAddIntegerOption()' - Add an integer option to an option array. | |
28 | * | |
29 | * New option arrays can be initialized simply by passing 0 for the | |
30 | * "num_options" parameter. | |
31 | * | |
98d88c8d | 32 | * @since CUPS 2.2.4/macOS 10.13@ |
0d7cb94a MS |
33 | */ |
34 | ||
35 | int /* O - Number of options */ | |
36 | cupsAddIntegerOption( | |
37 | const char *name, /* I - Name of option */ | |
38 | int value, /* I - Value of option */ | |
39 | int num_options, /* I - Number of options */ | |
40 | cups_option_t **options) /* IO - Pointer to options */ | |
41 | { | |
42 | char strvalue[32]; /* String value */ | |
43 | ||
44 | ||
45 | snprintf(strvalue, sizeof(strvalue), "%d", value); | |
46 | ||
47 | return (cupsAddOption(name, strvalue, num_options, options)); | |
48 | } | |
49 | ||
50 | ||
ef416fc2 | 51 | /* |
52 | * 'cupsAddOption()' - Add an option to an option array. | |
5a738aea MS |
53 | * |
54 | * New option arrays can be initialized simply by passing 0 for the | |
55 | * "num_options" parameter. | |
ef416fc2 | 56 | */ |
57 | ||
5a738aea MS |
58 | int /* O - Number of options */ |
59 | cupsAddOption(const char *name, /* I - Name of option */ | |
60 | const char *value, /* I - Value of option */ | |
61 | int num_options,/* I - Number of options */ | |
ef416fc2 | 62 | cups_option_t **options) /* IO - Pointer to options */ |
63 | { | |
ef416fc2 | 64 | cups_option_t *temp; /* Pointer to new option */ |
426c6a59 MS |
65 | int insert, /* Insertion point */ |
66 | diff; /* Result of search */ | |
ef416fc2 | 67 | |
68 | ||
807315e6 | 69 | DEBUG_printf(("2cupsAddOption(name=\"%s\", value=\"%s\", num_options=%d, options=%p)", name, value, num_options, (void *)options)); |
88f9aafc | 70 | |
20fbc903 MS |
71 | if (!name || !name[0] || !value || !options || num_options < 0) |
72 | { | |
f11a948a | 73 | DEBUG_printf(("3cupsAddOption: Returning %d", num_options)); |
ef416fc2 | 74 | return (num_options); |
20fbc903 | 75 | } |
ef416fc2 | 76 | |
d2123aee MS |
77 | if (!_cups_strcasecmp(name, "cupsPrintQuality")) |
78 | num_options = cupsRemoveOption("print-quality", num_options, options); | |
79 | else if (!_cups_strcasecmp(name, "print-quality")) | |
80 | num_options = cupsRemoveOption("cupsPrintQuality", num_options, options); | |
81 | ||
ef416fc2 | 82 | /* |
83 | * Look for an existing option with the same name... | |
84 | */ | |
85 | ||
426c6a59 MS |
86 | if (num_options == 0) |
87 | { | |
88 | insert = 0; | |
89 | diff = 1; | |
90 | } | |
91 | else | |
92 | { | |
93 | insert = cups_find_option(name, num_options, *options, num_options - 1, | |
94 | &diff); | |
ef416fc2 | 95 | |
426c6a59 MS |
96 | if (diff > 0) |
97 | insert ++; | |
98 | } | |
99 | ||
100 | if (diff) | |
ef416fc2 | 101 | { |
102 | /* | |
103 | * No matching option name... | |
104 | */ | |
105 | ||
f11a948a | 106 | DEBUG_printf(("4cupsAddOption: New option inserted at index %d...", |
426c6a59 | 107 | insert)); |
20fbc903 | 108 | |
ef416fc2 | 109 | if (num_options == 0) |
110 | temp = (cups_option_t *)malloc(sizeof(cups_option_t)); | |
111 | else | |
7e86f2f6 | 112 | temp = (cups_option_t *)realloc(*options, sizeof(cups_option_t) * (size_t)(num_options + 1)); |
ef416fc2 | 113 | |
7e86f2f6 | 114 | if (!temp) |
20fbc903 | 115 | { |
f11a948a | 116 | DEBUG_puts("3cupsAddOption: Unable to expand option array, returning 0"); |
ef416fc2 | 117 | return (0); |
20fbc903 | 118 | } |
ef416fc2 | 119 | |
426c6a59 MS |
120 | *options = temp; |
121 | ||
122 | if (insert < num_options) | |
123 | { | |
f11a948a | 124 | DEBUG_printf(("4cupsAddOption: Shifting %d options...", |
426c6a59 | 125 | (int)(num_options - insert))); |
7e86f2f6 | 126 | memmove(temp + insert + 1, temp + insert, (size_t)(num_options - insert) * sizeof(cups_option_t)); |
426c6a59 MS |
127 | } |
128 | ||
129 | temp += insert; | |
2e4ff8af | 130 | temp->name = _cupsStrAlloc(name); |
ef416fc2 | 131 | num_options ++; |
132 | } | |
133 | else | |
134 | { | |
135 | /* | |
136 | * Match found; free the old value... | |
137 | */ | |
138 | ||
f11a948a | 139 | DEBUG_printf(("4cupsAddOption: Option already exists at index %d...", |
426c6a59 MS |
140 | insert)); |
141 | ||
142 | temp = *options + insert; | |
2e4ff8af | 143 | _cupsStrFree(temp->value); |
ef416fc2 | 144 | } |
145 | ||
2e4ff8af | 146 | temp->value = _cupsStrAlloc(value); |
ef416fc2 | 147 | |
f11a948a | 148 | DEBUG_printf(("3cupsAddOption: Returning %d", num_options)); |
20fbc903 | 149 | |
ef416fc2 | 150 | return (num_options); |
151 | } | |
152 | ||
153 | ||
154 | /* | |
155 | * 'cupsFreeOptions()' - Free all memory used by options. | |
156 | */ | |
157 | ||
158 | void | |
159 | cupsFreeOptions( | |
160 | int num_options, /* I - Number of options */ | |
161 | cups_option_t *options) /* I - Pointer to options */ | |
162 | { | |
163 | int i; /* Looping var */ | |
164 | ||
165 | ||
807315e6 | 166 | DEBUG_printf(("cupsFreeOptions(num_options=%d, options=%p)", num_options, (void *)options)); |
20fbc903 MS |
167 | |
168 | if (num_options <= 0 || !options) | |
ef416fc2 | 169 | return; |
170 | ||
171 | for (i = 0; i < num_options; i ++) | |
172 | { | |
2e4ff8af MS |
173 | _cupsStrFree(options[i].name); |
174 | _cupsStrFree(options[i].value); | |
ef416fc2 | 175 | } |
176 | ||
177 | free(options); | |
178 | } | |
179 | ||
180 | ||
0d7cb94a MS |
181 | /* |
182 | * 'cupsGetIntegerOption()' - Get an integer option value. | |
183 | * | |
184 | * INT_MIN is returned when the option does not exist, is not an integer, or | |
185 | * exceeds the range of values for the "int" type. | |
186 | * | |
98d88c8d | 187 | * @since CUPS 2.2.4/macOS 10.13@ |
0d7cb94a MS |
188 | */ |
189 | ||
190 | int /* O - Option value or @code INT_MIN@ */ | |
191 | cupsGetIntegerOption( | |
192 | const char *name, /* I - Name of option */ | |
193 | int num_options, /* I - Number of options */ | |
194 | cups_option_t *options) /* I - Options */ | |
195 | { | |
196 | const char *value = cupsGetOption(name, num_options, options); | |
197 | /* String value of option */ | |
198 | char *ptr; /* Pointer into string value */ | |
199 | long intvalue; /* Integer value */ | |
200 | ||
201 | ||
202 | if (!value || !*value) | |
203 | return (INT_MIN); | |
204 | ||
205 | intvalue = strtol(value, &ptr, 10); | |
206 | if (intvalue < INT_MIN || intvalue > INT_MAX || *ptr) | |
207 | return (INT_MIN); | |
208 | ||
209 | return ((int)intvalue); | |
210 | } | |
211 | ||
212 | ||
ef416fc2 | 213 | /* |
214 | * 'cupsGetOption()' - Get an option value. | |
215 | */ | |
216 | ||
5a738aea | 217 | const char * /* O - Option value or @code NULL@ */ |
ef416fc2 | 218 | cupsGetOption(const char *name, /* I - Name of option */ |
219 | int num_options,/* I - Number of options */ | |
220 | cups_option_t *options) /* I - Options */ | |
221 | { | |
426c6a59 MS |
222 | int diff, /* Result of comparison */ |
223 | match; /* Matching index */ | |
ef416fc2 | 224 | |
225 | ||
807315e6 | 226 | DEBUG_printf(("2cupsGetOption(name=\"%s\", num_options=%d, options=%p)", name, num_options, (void *)options)); |
20fbc903 MS |
227 | |
228 | if (!name || num_options <= 0 || !options) | |
229 | { | |
e07d4801 | 230 | DEBUG_puts("3cupsGetOption: Returning NULL"); |
ef416fc2 | 231 | return (NULL); |
20fbc903 | 232 | } |
ef416fc2 | 233 | |
426c6a59 MS |
234 | match = cups_find_option(name, num_options, options, -1, &diff); |
235 | ||
236 | if (!diff) | |
237 | { | |
e07d4801 | 238 | DEBUG_printf(("3cupsGetOption: Returning \"%s\"", options[match].value)); |
426c6a59 MS |
239 | return (options[match].value); |
240 | } | |
ef416fc2 | 241 | |
e07d4801 | 242 | DEBUG_puts("3cupsGetOption: Returning NULL"); |
ef416fc2 | 243 | return (NULL); |
244 | } | |
245 | ||
246 | ||
ef416fc2 | 247 | /* |
b423cd4c | 248 | * 'cupsParseOptions()' - Parse options from a command-line argument. |
249 | * | |
250 | * This function converts space-delimited name/value pairs according | |
251 | * to the PAPI text option ABNF specification. Collection values | |
252 | * ("name={a=... b=... c=...}") are stored with the curley brackets | |
5a738aea MS |
253 | * intact - use @code cupsParseOptions@ on the value to extract the |
254 | * collection attributes. | |
b423cd4c | 255 | */ |
256 | ||
257 | int /* O - Number of options found */ | |
258 | cupsParseOptions( | |
259 | const char *arg, /* I - Argument to parse */ | |
260 | int num_options, /* I - Number of options */ | |
261 | cups_option_t **options) /* O - Options found */ | |
262 | { | |
263 | char *copyarg, /* Copy of input string */ | |
264 | *ptr, /* Pointer into string */ | |
265 | *name, /* Pointer to name */ | |
5a738aea | 266 | *value, /* Pointer to value */ |
426c6a59 | 267 | sep, /* Separator character */ |
5a738aea | 268 | quote; /* Quote character */ |
b423cd4c | 269 | |
270 | ||
807315e6 | 271 | DEBUG_printf(("cupsParseOptions(arg=\"%s\", num_options=%d, options=%p)", arg, num_options, (void *)options)); |
20fbc903 | 272 | |
91c84a35 MS |
273 | /* |
274 | * Range check input... | |
275 | */ | |
276 | ||
277 | if (!arg) | |
20fbc903 | 278 | { |
e07d4801 | 279 | DEBUG_printf(("1cupsParseOptions: Returning %d", num_options)); |
91c84a35 | 280 | return (num_options); |
20fbc903 | 281 | } |
91c84a35 MS |
282 | |
283 | if (!options || num_options < 0) | |
20fbc903 | 284 | { |
e07d4801 | 285 | DEBUG_puts("1cupsParseOptions: Returning 0"); |
b423cd4c | 286 | return (0); |
20fbc903 | 287 | } |
b423cd4c | 288 | |
289 | /* | |
290 | * Make a copy of the argument string and then divide it up... | |
291 | */ | |
292 | ||
91c84a35 | 293 | if ((copyarg = strdup(arg)) == NULL) |
20fbc903 | 294 | { |
e07d4801 MS |
295 | DEBUG_puts("1cupsParseOptions: Unable to copy arg string"); |
296 | DEBUG_printf(("1cupsParseOptions: Returning %d", num_options)); | |
91c84a35 | 297 | return (num_options); |
20fbc903 | 298 | } |
91c84a35 | 299 | |
ee571f26 MS |
300 | if (*copyarg == '{') |
301 | { | |
302 | /* | |
303 | * Remove surrounding {} so we can parse "{name=value ... name=value}"... | |
304 | */ | |
305 | ||
306 | if ((ptr = copyarg + strlen(copyarg) - 1) > copyarg && *ptr == '}') | |
307 | { | |
308 | *ptr = '\0'; | |
309 | ptr = copyarg + 1; | |
310 | } | |
311 | else | |
312 | ptr = copyarg; | |
313 | } | |
314 | else | |
315 | ptr = copyarg; | |
b423cd4c | 316 | |
317 | /* | |
318 | * Skip leading spaces... | |
319 | */ | |
320 | ||
7cf5915e | 321 | while (_cups_isspace(*ptr)) |
b423cd4c | 322 | ptr ++; |
323 | ||
324 | /* | |
325 | * Loop through the string... | |
326 | */ | |
327 | ||
328 | while (*ptr != '\0') | |
329 | { | |
330 | /* | |
331 | * Get the name up to a SPACE, =, or end-of-string... | |
332 | */ | |
333 | ||
334 | name = ptr; | |
7cf5915e | 335 | while (!strchr("\f\n\r\t\v =", *ptr) && *ptr) |
b423cd4c | 336 | ptr ++; |
337 | ||
338 | /* | |
339 | * Avoid an empty name... | |
340 | */ | |
341 | ||
342 | if (ptr == name) | |
343 | break; | |
344 | ||
345 | /* | |
346 | * Skip trailing spaces... | |
347 | */ | |
348 | ||
7cf5915e | 349 | while (_cups_isspace(*ptr)) |
b423cd4c | 350 | *ptr++ = '\0'; |
351 | ||
426c6a59 MS |
352 | if ((sep = *ptr) == '=') |
353 | *ptr++ = '\0'; | |
354 | ||
e07d4801 | 355 | DEBUG_printf(("2cupsParseOptions: name=\"%s\"", name)); |
20fbc903 | 356 | |
426c6a59 | 357 | if (sep != '=') |
b423cd4c | 358 | { |
359 | /* | |
5a738aea | 360 | * Boolean option... |
b423cd4c | 361 | */ |
362 | ||
88f9aafc | 363 | if (!_cups_strncasecmp(name, "no", 2)) |
b423cd4c | 364 | num_options = cupsAddOption(name + 2, "false", num_options, |
365 | options); | |
366 | else | |
367 | num_options = cupsAddOption(name, "true", num_options, options); | |
368 | ||
369 | continue; | |
370 | } | |
371 | ||
372 | /* | |
373 | * Remove = and parse the value... | |
374 | */ | |
375 | ||
426c6a59 | 376 | value = ptr; |
b423cd4c | 377 | |
7cf5915e | 378 | while (*ptr && !_cups_isspace(*ptr)) |
b423cd4c | 379 | { |
20fbc903 MS |
380 | if (*ptr == ',') |
381 | ptr ++; | |
382 | else if (*ptr == '\'' || *ptr == '\"') | |
b423cd4c | 383 | { |
20fbc903 MS |
384 | /* |
385 | * Quoted string constant... | |
386 | */ | |
b423cd4c | 387 | |
20fbc903 MS |
388 | quote = *ptr; |
389 | _cups_strcpy(ptr, ptr + 1); | |
b423cd4c | 390 | |
20fbc903 MS |
391 | while (*ptr != quote && *ptr) |
392 | { | |
393 | if (*ptr == '\\' && ptr[1]) | |
394 | _cups_strcpy(ptr, ptr + 1); | |
395 | ||
396 | ptr ++; | |
397 | } | |
b423cd4c | 398 | |
20fbc903 MS |
399 | if (*ptr) |
400 | _cups_strcpy(ptr, ptr + 1); | |
401 | } | |
402 | else if (*ptr == '{') | |
403 | { | |
404 | /* | |
405 | * Collection value... | |
406 | */ | |
b423cd4c | 407 | |
20fbc903 | 408 | int depth; |
b423cd4c | 409 | |
20fbc903 | 410 | for (depth = 0; *ptr; ptr ++) |
b423cd4c | 411 | { |
20fbc903 MS |
412 | if (*ptr == '{') |
413 | depth ++; | |
414 | else if (*ptr == '}') | |
b423cd4c | 415 | { |
20fbc903 MS |
416 | depth --; |
417 | if (!depth) | |
418 | { | |
419 | ptr ++; | |
b423cd4c | 420 | break; |
20fbc903 | 421 | } |
b423cd4c | 422 | } |
20fbc903 MS |
423 | else if (*ptr == '\\' && ptr[1]) |
424 | _cups_strcpy(ptr, ptr + 1); | |
425 | } | |
426 | } | |
427 | else | |
b423cd4c | 428 | { |
20fbc903 MS |
429 | /* |
430 | * Normal space-delimited string... | |
431 | */ | |
b423cd4c | 432 | |
7cf5915e | 433 | while (*ptr && !_cups_isspace(*ptr)) |
20fbc903 MS |
434 | { |
435 | if (*ptr == '\\' && ptr[1]) | |
436 | _cups_strcpy(ptr, ptr + 1); | |
437 | ||
438 | ptr ++; | |
439 | } | |
b423cd4c | 440 | } |
441 | } | |
442 | ||
20fbc903 MS |
443 | if (*ptr != '\0') |
444 | *ptr++ = '\0'; | |
445 | ||
e07d4801 | 446 | DEBUG_printf(("2cupsParseOptions: value=\"%s\"", value)); |
20fbc903 | 447 | |
b423cd4c | 448 | /* |
449 | * Skip trailing whitespace... | |
450 | */ | |
451 | ||
7cf5915e | 452 | while (_cups_isspace(*ptr)) |
20fbc903 | 453 | ptr ++; |
b423cd4c | 454 | |
455 | /* | |
456 | * Add the string value... | |
457 | */ | |
458 | ||
459 | num_options = cupsAddOption(name, value, num_options, options); | |
460 | } | |
461 | ||
462 | /* | |
463 | * Free the copy of the argument we made and return the number of options | |
464 | * found. | |
465 | */ | |
466 | ||
467 | free(copyarg); | |
468 | ||
e07d4801 | 469 | DEBUG_printf(("1cupsParseOptions: Returning %d", num_options)); |
20fbc903 | 470 | |
b423cd4c | 471 | return (num_options); |
472 | } | |
473 | ||
474 | ||
475 | /* | |
f7deaa1a | 476 | * 'cupsRemoveOption()' - Remove an option from an option array. |
b423cd4c | 477 | * |
8072030b | 478 | * @since CUPS 1.2/macOS 10.5@ |
b423cd4c | 479 | */ |
480 | ||
481 | int /* O - New number of options */ | |
482 | cupsRemoveOption( | |
483 | const char *name, /* I - Option name */ | |
484 | int num_options, /* I - Current number of options */ | |
485 | cups_option_t **options) /* IO - Options */ | |
486 | { | |
487 | int i; /* Looping var */ | |
488 | cups_option_t *option; /* Current option */ | |
489 | ||
490 | ||
807315e6 | 491 | DEBUG_printf(("2cupsRemoveOption(name=\"%s\", num_options=%d, options=%p)", name, num_options, (void *)options)); |
20fbc903 | 492 | |
b423cd4c | 493 | /* |
494 | * Range check input... | |
495 | */ | |
496 | ||
497 | if (!name || num_options < 1 || !options) | |
20fbc903 | 498 | { |
f11a948a | 499 | DEBUG_printf(("3cupsRemoveOption: Returning %d", num_options)); |
b423cd4c | 500 | return (num_options); |
20fbc903 | 501 | } |
b423cd4c | 502 | |
503 | /* | |
504 | * Loop for the option... | |
505 | */ | |
506 | ||
507 | for (i = num_options, option = *options; i > 0; i --, option ++) | |
88f9aafc | 508 | if (!_cups_strcasecmp(name, option->name)) |
b423cd4c | 509 | break; |
510 | ||
511 | if (i) | |
512 | { | |
513 | /* | |
514 | * Remove this option from the array... | |
515 | */ | |
516 | ||
f11a948a | 517 | DEBUG_puts("4cupsRemoveOption: Found option, removing it..."); |
20fbc903 | 518 | |
b423cd4c | 519 | num_options --; |
520 | i --; | |
521 | ||
2e4ff8af MS |
522 | _cupsStrFree(option->name); |
523 | _cupsStrFree(option->value); | |
b423cd4c | 524 | |
525 | if (i > 0) | |
7e86f2f6 | 526 | memmove(option, option + 1, (size_t)i * sizeof(cups_option_t)); |
b423cd4c | 527 | } |
528 | ||
529 | /* | |
530 | * Return the new number of options... | |
531 | */ | |
532 | ||
f11a948a | 533 | DEBUG_printf(("3cupsRemoveOption: Returning %d", num_options)); |
b423cd4c | 534 | return (num_options); |
535 | } | |
536 | ||
537 | ||
f8b3a85b MS |
538 | /* |
539 | * '_cupsGet1284Values()' - Get 1284 device ID keys and values. | |
540 | * | |
541 | * The returned dictionary is a CUPS option array that can be queried with | |
542 | * cupsGetOption and freed with cupsFreeOptions. | |
543 | */ | |
544 | ||
545 | int /* O - Number of key/value pairs */ | |
546 | _cupsGet1284Values( | |
547 | const char *device_id, /* I - IEEE-1284 device ID string */ | |
548 | cups_option_t **values) /* O - Array of key/value pairs */ | |
549 | { | |
550 | int num_values; /* Number of values */ | |
551 | char key[256], /* Key string */ | |
552 | value[256], /* Value string */ | |
553 | *ptr; /* Pointer into key/value */ | |
554 | ||
555 | ||
556 | /* | |
557 | * Range check input... | |
558 | */ | |
559 | ||
560 | if (values) | |
561 | *values = NULL; | |
562 | ||
563 | if (!device_id || !values) | |
564 | return (0); | |
565 | ||
566 | /* | |
567 | * Parse the 1284 device ID value into keys and values. The format is | |
568 | * repeating sequences of: | |
569 | * | |
570 | * [whitespace]key:value[whitespace]; | |
571 | */ | |
572 | ||
573 | num_values = 0; | |
574 | while (*device_id) | |
575 | { | |
7cf5915e | 576 | while (_cups_isspace(*device_id)) |
f8b3a85b MS |
577 | device_id ++; |
578 | ||
579 | if (!*device_id) | |
580 | break; | |
581 | ||
582 | for (ptr = key; *device_id && *device_id != ':'; device_id ++) | |
583 | if (ptr < (key + sizeof(key) - 1)) | |
584 | *ptr++ = *device_id; | |
585 | ||
586 | if (!*device_id) | |
587 | break; | |
588 | ||
7cf5915e | 589 | while (ptr > key && _cups_isspace(ptr[-1])) |
f8b3a85b MS |
590 | ptr --; |
591 | ||
592 | *ptr = '\0'; | |
593 | device_id ++; | |
594 | ||
7cf5915e | 595 | while (_cups_isspace(*device_id)) |
f8b3a85b MS |
596 | device_id ++; |
597 | ||
598 | if (!*device_id) | |
599 | break; | |
600 | ||
601 | for (ptr = value; *device_id && *device_id != ';'; device_id ++) | |
602 | if (ptr < (value + sizeof(value) - 1)) | |
603 | *ptr++ = *device_id; | |
604 | ||
605 | if (!*device_id) | |
606 | break; | |
607 | ||
7cf5915e | 608 | while (ptr > value && _cups_isspace(ptr[-1])) |
f8b3a85b MS |
609 | ptr --; |
610 | ||
611 | *ptr = '\0'; | |
612 | device_id ++; | |
613 | ||
614 | num_values = cupsAddOption(key, value, num_values, values); | |
615 | } | |
616 | ||
617 | return (num_values); | |
618 | } | |
619 | ||
620 | ||
09a101d6 | 621 | /* |
426c6a59 MS |
622 | * 'cups_compare_options()' - Compare two options. |
623 | */ | |
624 | ||
625 | static int /* O - Result of comparison */ | |
626 | cups_compare_options(cups_option_t *a, /* I - First option */ | |
627 | cups_option_t *b) /* I - Second option */ | |
628 | { | |
88f9aafc | 629 | return (_cups_strcasecmp(a->name, b->name)); |
426c6a59 MS |
630 | } |
631 | ||
632 | ||
633 | /* | |
634 | * 'cups_find_option()' - Find an option using a binary search. | |
635 | */ | |
636 | ||
637 | static int /* O - Index of match */ | |
638 | cups_find_option( | |
639 | const char *name, /* I - Option name */ | |
640 | int num_options, /* I - Number of options */ | |
641 | cups_option_t *options, /* I - Options */ | |
642 | int prev, /* I - Previous index */ | |
643 | int *rdiff) /* O - Difference of match */ | |
644 | { | |
645 | int left, /* Low mark for binary search */ | |
646 | right, /* High mark for binary search */ | |
647 | current, /* Current index */ | |
648 | diff; /* Result of comparison */ | |
649 | cups_option_t key; /* Search key */ | |
650 | ||
651 | ||
807315e6 | 652 | DEBUG_printf(("7cups_find_option(name=\"%s\", num_options=%d, options=%p, prev=%d, rdiff=%p)", name, num_options, (void *)options, prev, (void *)rdiff)); |
426c6a59 MS |
653 | |
654 | #ifdef DEBUG | |
655 | for (left = 0; left < num_options; left ++) | |
e07d4801 | 656 | DEBUG_printf(("9cups_find_option: options[%d].name=\"%s\", .value=\"%s\"", |
426c6a59 MS |
657 | left, options[left].name, options[left].value)); |
658 | #endif /* DEBUG */ | |
659 | ||
660 | key.name = (char *)name; | |
661 | ||
662 | if (prev >= 0) | |
663 | { | |
664 | /* | |
665 | * Start search on either side of previous... | |
666 | */ | |
667 | ||
668 | if ((diff = cups_compare_options(&key, options + prev)) == 0 || | |
669 | (diff < 0 && prev == 0) || | |
670 | (diff > 0 && prev == (num_options - 1))) | |
671 | { | |
672 | *rdiff = diff; | |
673 | return (prev); | |
674 | } | |
675 | else if (diff < 0) | |
676 | { | |
677 | /* | |
678 | * Start with previous on right side... | |
679 | */ | |
680 | ||
681 | left = 0; | |
682 | right = prev; | |
683 | } | |
684 | else | |
685 | { | |
686 | /* | |
687 | * Start wih previous on left side... | |
688 | */ | |
689 | ||
690 | left = prev; | |
691 | right = num_options - 1; | |
692 | } | |
693 | } | |
694 | else | |
695 | { | |
696 | /* | |
697 | * Start search in the middle... | |
698 | */ | |
699 | ||
700 | left = 0; | |
701 | right = num_options - 1; | |
702 | } | |
703 | ||
704 | do | |
705 | { | |
706 | current = (left + right) / 2; | |
707 | diff = cups_compare_options(&key, options + current); | |
708 | ||
709 | if (diff == 0) | |
710 | break; | |
711 | else if (diff < 0) | |
712 | right = current; | |
713 | else | |
714 | left = current; | |
715 | } | |
716 | while ((right - left) > 1); | |
717 | ||
718 | if (diff != 0) | |
719 | { | |
720 | /* | |
721 | * Check the last 1 or 2 elements... | |
722 | */ | |
723 | ||
724 | if ((diff = cups_compare_options(&key, options + left)) <= 0) | |
725 | current = left; | |
726 | else | |
727 | { | |
728 | diff = cups_compare_options(&key, options + right); | |
729 | current = right; | |
730 | } | |
731 | } | |
732 | ||
733 | /* | |
734 | * Return the closest destination and the difference... | |
735 | */ | |
736 | ||
737 | *rdiff = diff; | |
738 | ||
739 | return (current); | |
740 | } |