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Commit | Line | Data |
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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
60918275 | 2 | |
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
a7334b09 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
60918275 LP |
22 | #include <stdlib.h> |
23 | #include <stdarg.h> | |
24 | #include <string.h> | |
2e6c9e6b | 25 | #include <errno.h> |
60918275 LP |
26 | |
27 | #include "util.h" | |
28 | #include "strv.h" | |
29 | ||
30 | char *strv_find(char **l, const char *name) { | |
5f9a22c3 LP |
31 | char **i; |
32 | ||
60918275 LP |
33 | assert(name); |
34 | ||
5f9a22c3 LP |
35 | STRV_FOREACH(i, l) |
36 | if (streq(*i, name)) | |
37 | return *i; | |
60918275 LP |
38 | |
39 | return NULL; | |
40 | } | |
41 | ||
a4bfb399 LP |
42 | char *strv_find_prefix(char **l, const char *name) { |
43 | char **i; | |
44 | ||
45 | assert(name); | |
46 | ||
47 | STRV_FOREACH(i, l) | |
48 | if (startswith(*i, name)) | |
49 | return *i; | |
50 | ||
51 | return NULL; | |
52 | } | |
53 | ||
28849dba LP |
54 | char *strv_find_startswith(char **l, const char *name) { |
55 | char **i, *e; | |
56 | ||
57 | assert(name); | |
58 | ||
59 | /* Like strv_find_prefix, but actually returns only the | |
60 | * suffix, not the whole item */ | |
61 | ||
62 | STRV_FOREACH(i, l) { | |
63 | e = startswith(*i, name); | |
64 | if (e) | |
65 | return e; | |
66 | } | |
67 | ||
68 | return NULL; | |
69 | } | |
70 | ||
dd9c7723 | 71 | void strv_clear(char **l) { |
60918275 LP |
72 | char **k; |
73 | ||
74 | if (!l) | |
75 | return; | |
76 | ||
77 | for (k = l; *k; k++) | |
78 | free(*k); | |
79 | ||
dd9c7723 TG |
80 | *l = NULL; |
81 | } | |
82 | ||
33c2ce7b | 83 | char **strv_free(char **l) { |
dd9c7723 | 84 | strv_clear(l); |
60918275 | 85 | free(l); |
33c2ce7b | 86 | return NULL; |
60918275 LP |
87 | } |
88 | ||
2fd9ae2e | 89 | char **strv_copy(char * const *l) { |
60918275 LP |
90 | char **r, **k; |
91 | ||
1fd8d04e LP |
92 | k = r = new(char*, strv_length(l) + 1); |
93 | if (!r) | |
60918275 LP |
94 | return NULL; |
95 | ||
ede27aab | 96 | if (l) |
1fd8d04e LP |
97 | for (; *l; k++, l++) { |
98 | *k = strdup(*l); | |
99 | if (!*k) { | |
100 | strv_free(r); | |
101 | return NULL; | |
102 | } | |
103 | } | |
60918275 LP |
104 | |
105 | *k = NULL; | |
106 | return r; | |
60918275 LP |
107 | } |
108 | ||
2fd9ae2e | 109 | unsigned strv_length(char * const *l) { |
60918275 LP |
110 | unsigned n = 0; |
111 | ||
112 | if (!l) | |
113 | return 0; | |
114 | ||
115 | for (; *l; l++) | |
116 | n++; | |
117 | ||
118 | return n; | |
119 | } | |
120 | ||
257eca1a | 121 | char **strv_new_ap(const char *x, va_list ap) { |
60918275 LP |
122 | const char *s; |
123 | char **a; | |
124 | unsigned n = 0, i = 0; | |
257eca1a LP |
125 | va_list aq; |
126 | ||
07719a21 LP |
127 | /* As a special trick we ignore all listed strings that equal |
128 | * (const char*) -1. This is supposed to be used with the | |
129 | * STRV_IFNOTNULL() macro to include possibly NULL strings in | |
130 | * the string list. */ | |
131 | ||
60918275 | 132 | if (x) { |
07719a21 | 133 | n = x == (const char*) -1 ? 0 : 1; |
60918275 | 134 | |
257eca1a | 135 | va_copy(aq, ap); |
07719a21 LP |
136 | while ((s = va_arg(aq, const char*))) { |
137 | if (s == (const char*) -1) | |
138 | continue; | |
139 | ||
60918275 | 140 | n++; |
07719a21 LP |
141 | } |
142 | ||
257eca1a | 143 | va_end(aq); |
60918275 LP |
144 | } |
145 | ||
07719a21 LP |
146 | a = new(char*, n+1); |
147 | if (!a) | |
60918275 LP |
148 | return NULL; |
149 | ||
150 | if (x) { | |
07719a21 LP |
151 | if (x != (const char*) -1) { |
152 | a[i] = strdup(x); | |
153 | if (!a[i]) | |
154 | goto fail; | |
155 | i++; | |
60918275 LP |
156 | } |
157 | ||
60918275 | 158 | while ((s = va_arg(ap, const char*))) { |
07719a21 LP |
159 | |
160 | if (s == (const char*) -1) | |
161 | continue; | |
162 | ||
163 | a[i] = strdup(s); | |
164 | if (!a[i]) | |
60918275 LP |
165 | goto fail; |
166 | ||
167 | i++; | |
168 | } | |
60918275 LP |
169 | } |
170 | ||
171 | a[i] = NULL; | |
257eca1a | 172 | |
60918275 LP |
173 | return a; |
174 | ||
175 | fail: | |
1fd8d04e | 176 | strv_free(a); |
60918275 LP |
177 | return NULL; |
178 | } | |
034c6ed7 | 179 | |
257eca1a LP |
180 | char **strv_new(const char *x, ...) { |
181 | char **r; | |
182 | va_list ap; | |
183 | ||
184 | va_start(ap, x); | |
185 | r = strv_new_ap(x, ap); | |
186 | va_end(ap); | |
187 | ||
188 | return r; | |
189 | } | |
190 | ||
e3e45d4f SP |
191 | int strv_extend_strv(char ***a, char **b) { |
192 | int r; | |
193 | char **s; | |
07719a21 | 194 | |
e3e45d4f SP |
195 | STRV_FOREACH(s, b) { |
196 | r = strv_extend(a, *s); | |
197 | if (r < 0) | |
198 | return r; | |
07719a21 | 199 | } |
034c6ed7 | 200 | |
e3e45d4f | 201 | return 0; |
5f9a22c3 LP |
202 | } |
203 | ||
e3e45d4f SP |
204 | int strv_extend_strv_concat(char ***a, char **b, const char *suffix) { |
205 | int r; | |
206 | char **s; | |
5f9a22c3 | 207 | |
e3e45d4f SP |
208 | STRV_FOREACH(s, b) { |
209 | char *v; | |
5f9a22c3 | 210 | |
e3e45d4f SP |
211 | v = strappend(*s, suffix); |
212 | if (!v) | |
213 | return -ENOMEM; | |
5f9a22c3 | 214 | |
e3e45d4f SP |
215 | r = strv_push(a, v); |
216 | if (r < 0) { | |
217 | free(v); | |
218 | return r; | |
8ea913b2 | 219 | } |
8ea913b2 | 220 | } |
5f9a22c3 | 221 | |
e3e45d4f | 222 | return 0; |
5f9a22c3 LP |
223 | } |
224 | ||
225 | char **strv_split(const char *s, const char *separator) { | |
a2a5291b | 226 | const char *word, *state; |
5f9a22c3 LP |
227 | size_t l; |
228 | unsigned n, i; | |
229 | char **r; | |
230 | ||
231 | assert(s); | |
232 | ||
233 | n = 0; | |
a2a5291b | 234 | FOREACH_WORD_SEPARATOR(word, l, s, separator, state) |
5f9a22c3 LP |
235 | n++; |
236 | ||
1fd8d04e LP |
237 | r = new(char*, n+1); |
238 | if (!r) | |
5f9a22c3 LP |
239 | return NULL; |
240 | ||
241 | i = 0; | |
a2a5291b ZJS |
242 | FOREACH_WORD_SEPARATOR(word, l, s, separator, state) { |
243 | r[i] = strndup(word, l); | |
1fd8d04e | 244 | if (!r[i]) { |
5f9a22c3 LP |
245 | strv_free(r); |
246 | return NULL; | |
247 | } | |
248 | ||
1fd8d04e LP |
249 | i++; |
250 | } | |
251 | ||
5f9a22c3 LP |
252 | r[i] = NULL; |
253 | return r; | |
254 | } | |
255 | ||
26d04f86 LP |
256 | char **strv_split_newlines(const char *s) { |
257 | char **l; | |
258 | unsigned n; | |
259 | ||
260 | assert(s); | |
261 | ||
262 | /* Special version of strv_split() that splits on newlines and | |
263 | * suppresses an empty string at the end */ | |
264 | ||
265 | l = strv_split(s, NEWLINE); | |
266 | if (!l) | |
267 | return NULL; | |
268 | ||
269 | n = strv_length(l); | |
270 | if (n <= 0) | |
271 | return l; | |
272 | ||
273 | if (isempty(l[n-1])) { | |
274 | free(l[n-1]); | |
275 | l[n-1] = NULL; | |
276 | } | |
277 | ||
278 | return l; | |
279 | } | |
280 | ||
8adaf7bd | 281 | int strv_split_extract(char ***t, const char *s, const char *separators, ExtractFlags flags) { |
f88e6be5 LP |
282 | size_t n = 0, allocated = 0; |
283 | _cleanup_strv_free_ char **l = NULL; | |
284 | int r; | |
285 | ||
286 | assert(t); | |
287 | assert(s); | |
288 | ||
289 | for (;;) { | |
290 | _cleanup_free_ char *word = NULL; | |
291 | ||
8adaf7bd | 292 | r = extract_first_word(&s, &word, separators, flags); |
f88e6be5 LP |
293 | if (r < 0) |
294 | return r; | |
8adaf7bd | 295 | if (r == 0) { |
f88e6be5 | 296 | break; |
8adaf7bd | 297 | } |
f88e6be5 LP |
298 | |
299 | if (!GREEDY_REALLOC(l, allocated, n + 2)) | |
300 | return -ENOMEM; | |
301 | ||
302 | l[n++] = word; | |
303 | word = NULL; | |
304 | ||
305 | l[n] = NULL; | |
306 | } | |
307 | ||
308 | if (!l) | |
309 | l = new0(char*, 1); | |
310 | ||
311 | *t = l; | |
312 | l = NULL; | |
313 | ||
314 | return 0; | |
315 | } | |
316 | ||
5f9a22c3 LP |
317 | char *strv_join(char **l, const char *separator) { |
318 | char *r, *e; | |
319 | char **s; | |
320 | size_t n, k; | |
321 | ||
322 | if (!separator) | |
323 | separator = " "; | |
324 | ||
325 | k = strlen(separator); | |
326 | ||
327 | n = 0; | |
328 | STRV_FOREACH(s, l) { | |
329 | if (n != 0) | |
330 | n += k; | |
331 | n += strlen(*s); | |
332 | } | |
333 | ||
1fd8d04e LP |
334 | r = new(char, n+1); |
335 | if (!r) | |
5f9a22c3 LP |
336 | return NULL; |
337 | ||
338 | e = r; | |
339 | STRV_FOREACH(s, l) { | |
340 | if (e != r) | |
341 | e = stpcpy(e, separator); | |
342 | ||
343 | e = stpcpy(e, *s); | |
344 | } | |
345 | ||
8d49745c LP |
346 | *e = 0; |
347 | ||
5f9a22c3 LP |
348 | return r; |
349 | } | |
350 | ||
a6fde353 ZJS |
351 | char *strv_join_quoted(char **l) { |
352 | char *buf = NULL; | |
353 | char **s; | |
354 | size_t allocated = 0, len = 0; | |
355 | ||
356 | STRV_FOREACH(s, l) { | |
357 | /* assuming here that escaped string cannot be more | |
358 | * than twice as long, and reserving space for the | |
359 | * separator and quotes. | |
360 | */ | |
361 | _cleanup_free_ char *esc = NULL; | |
362 | size_t needed; | |
363 | ||
364 | if (!GREEDY_REALLOC(buf, allocated, | |
365 | len + strlen(*s) * 2 + 3)) | |
366 | goto oom; | |
367 | ||
368 | esc = cescape(*s); | |
369 | if (!esc) | |
370 | goto oom; | |
371 | ||
372 | needed = snprintf(buf + len, allocated - len, "%s\"%s\"", | |
373 | len > 0 ? " " : "", esc); | |
374 | assert(needed < allocated - len); | |
375 | len += needed; | |
376 | } | |
377 | ||
378 | if (!buf) | |
379 | buf = malloc0(1); | |
380 | ||
381 | return buf; | |
382 | ||
383 | oom: | |
384 | free(buf); | |
385 | return NULL; | |
386 | } | |
387 | ||
4468addc | 388 | int strv_push(char ***l, char *value) { |
5926ccca | 389 | char **c; |
97569e15 | 390 | unsigned n, m; |
5926ccca LP |
391 | |
392 | if (!value) | |
393 | return 0; | |
394 | ||
82dde599 | 395 | n = strv_length(*l); |
97569e15 | 396 | |
98940a3c | 397 | /* Increase and check for overflow */ |
97569e15 LP |
398 | m = n + 2; |
399 | if (m < n) | |
400 | return -ENOMEM; | |
401 | ||
14f27b4e | 402 | c = realloc_multiply(*l, sizeof(char*), m); |
4468addc | 403 | if (!c) |
82dde599 | 404 | return -ENOMEM; |
82dde599 | 405 | |
4468addc | 406 | c[n] = value; |
82dde599 LP |
407 | c[n+1] = NULL; |
408 | ||
5926ccca LP |
409 | *l = c; |
410 | return 0; | |
411 | } | |
412 | ||
98940a3c LP |
413 | int strv_push_pair(char ***l, char *a, char *b) { |
414 | char **c; | |
415 | unsigned n, m; | |
416 | ||
417 | if (!a && !b) | |
418 | return 0; | |
419 | ||
420 | n = strv_length(*l); | |
421 | ||
422 | /* increase and check for overflow */ | |
423 | m = n + !!a + !!b + 1; | |
424 | if (m < n) | |
425 | return -ENOMEM; | |
426 | ||
427 | c = realloc_multiply(*l, sizeof(char*), m); | |
428 | if (!c) | |
429 | return -ENOMEM; | |
430 | ||
431 | if (a) | |
432 | c[n++] = a; | |
433 | if (b) | |
434 | c[n++] = b; | |
435 | c[n] = NULL; | |
436 | ||
437 | *l = c; | |
438 | return 0; | |
439 | } | |
440 | ||
9a00f57a LP |
441 | int strv_push_prepend(char ***l, char *value) { |
442 | char **c; | |
97569e15 | 443 | unsigned n, m, i; |
9a00f57a LP |
444 | |
445 | if (!value) | |
446 | return 0; | |
447 | ||
448 | n = strv_length(*l); | |
97569e15 LP |
449 | |
450 | /* increase and check for overflow */ | |
451 | m = n + 2; | |
452 | if (m < n) | |
453 | return -ENOMEM; | |
454 | ||
455 | c = new(char*, m); | |
9a00f57a LP |
456 | if (!c) |
457 | return -ENOMEM; | |
458 | ||
459 | for (i = 0; i < n; i++) | |
460 | c[i+1] = (*l)[i]; | |
461 | ||
462 | c[0] = value; | |
463 | c[n+1] = NULL; | |
464 | ||
465 | free(*l); | |
466 | *l = c; | |
467 | ||
468 | return 0; | |
469 | } | |
470 | ||
6e18964d ZJS |
471 | int strv_consume(char ***l, char *value) { |
472 | int r; | |
473 | ||
474 | r = strv_push(l, value); | |
475 | if (r < 0) | |
476 | free(value); | |
477 | ||
9a00f57a LP |
478 | return r; |
479 | } | |
480 | ||
98940a3c LP |
481 | int strv_consume_pair(char ***l, char *a, char *b) { |
482 | int r; | |
483 | ||
484 | r = strv_push_pair(l, a, b); | |
485 | if (r < 0) { | |
486 | free(a); | |
487 | free(b); | |
488 | } | |
489 | ||
490 | return r; | |
491 | } | |
492 | ||
9a00f57a LP |
493 | int strv_consume_prepend(char ***l, char *value) { |
494 | int r; | |
495 | ||
496 | r = strv_push_prepend(l, value); | |
497 | if (r < 0) | |
498 | free(value); | |
499 | ||
6e18964d ZJS |
500 | return r; |
501 | } | |
502 | ||
4468addc LP |
503 | int strv_extend(char ***l, const char *value) { |
504 | char *v; | |
4468addc LP |
505 | |
506 | if (!value) | |
507 | return 0; | |
508 | ||
509 | v = strdup(value); | |
510 | if (!v) | |
511 | return -ENOMEM; | |
512 | ||
6e18964d | 513 | return strv_consume(l, v); |
4468addc LP |
514 | } |
515 | ||
5f9a22c3 | 516 | char **strv_uniq(char **l) { |
cba8922f LP |
517 | char **i; |
518 | ||
5f9a22c3 LP |
519 | /* Drops duplicate entries. The first identical string will be |
520 | * kept, the others dropped */ | |
521 | ||
cba8922f | 522 | STRV_FOREACH(i, l) |
5f9a22c3 LP |
523 | strv_remove(i+1, *i); |
524 | ||
525 | return l; | |
526 | } | |
527 | ||
e1dd6790 LP |
528 | bool strv_is_uniq(char **l) { |
529 | char **i; | |
530 | ||
531 | STRV_FOREACH(i, l) | |
532 | if (strv_find(i+1, *i)) | |
533 | return false; | |
534 | ||
535 | return true; | |
536 | } | |
537 | ||
5f9a22c3 LP |
538 | char **strv_remove(char **l, const char *s) { |
539 | char **f, **t; | |
540 | ||
541 | if (!l) | |
542 | return NULL; | |
543 | ||
5d6ab905 LP |
544 | assert(s); |
545 | ||
546 | /* Drops every occurrence of s in the string list, edits | |
547 | * in-place. */ | |
5f9a22c3 | 548 | |
e3e45d4f SP |
549 | for (f = t = l; *f; f++) |
550 | if (streq(*f, s)) | |
71ecc858 | 551 | free(*f); |
e3e45d4f SP |
552 | else |
553 | *(t++) = *f; | |
71ecc858 LP |
554 | |
555 | *t = NULL; | |
556 | return l; | |
557 | } | |
558 | ||
21bc923a LP |
559 | char **strv_parse_nulstr(const char *s, size_t l) { |
560 | const char *p; | |
561 | unsigned c = 0, i = 0; | |
562 | char **v; | |
563 | ||
564 | assert(s || l <= 0); | |
565 | ||
566 | if (l <= 0) | |
49b832c5 | 567 | return new0(char*, 1); |
21bc923a LP |
568 | |
569 | for (p = s; p < s + l; p++) | |
570 | if (*p == 0) | |
571 | c++; | |
572 | ||
573 | if (s[l-1] != 0) | |
574 | c++; | |
575 | ||
1fd8d04e LP |
576 | v = new0(char*, c+1); |
577 | if (!v) | |
21bc923a LP |
578 | return NULL; |
579 | ||
580 | p = s; | |
581 | while (p < s + l) { | |
582 | const char *e; | |
583 | ||
584 | e = memchr(p, 0, s + l - p); | |
585 | ||
1fd8d04e LP |
586 | v[i] = strndup(p, e ? e - p : s + l - p); |
587 | if (!v[i]) { | |
21bc923a LP |
588 | strv_free(v); |
589 | return NULL; | |
590 | } | |
591 | ||
1fd8d04e LP |
592 | i++; |
593 | ||
21bc923a LP |
594 | if (!e) |
595 | break; | |
596 | ||
597 | p = e + 1; | |
598 | } | |
599 | ||
600 | assert(i == c); | |
601 | ||
602 | return v; | |
603 | } | |
0c85a4f3 | 604 | |
fabe5c0e LP |
605 | char **strv_split_nulstr(const char *s) { |
606 | const char *i; | |
607 | char **r = NULL; | |
608 | ||
609 | NULSTR_FOREACH(i, s) | |
610 | if (strv_extend(&r, i) < 0) { | |
611 | strv_free(r); | |
612 | return NULL; | |
613 | } | |
614 | ||
615 | if (!r) | |
616 | return strv_new(NULL, NULL); | |
617 | ||
618 | return r; | |
619 | } | |
620 | ||
0c85a4f3 | 621 | bool strv_overlap(char **a, char **b) { |
e3e45d4f | 622 | char **i; |
0c85a4f3 | 623 | |
e3e45d4f SP |
624 | STRV_FOREACH(i, a) |
625 | if (strv_contains(b, *i)) | |
626 | return true; | |
0c85a4f3 LP |
627 | |
628 | return false; | |
629 | } | |
857a493d LP |
630 | |
631 | static int str_compare(const void *_a, const void *_b) { | |
632 | const char **a = (const char**) _a, **b = (const char**) _b; | |
633 | ||
634 | return strcmp(*a, *b); | |
635 | } | |
636 | ||
637 | char **strv_sort(char **l) { | |
638 | ||
639 | if (strv_isempty(l)) | |
640 | return l; | |
641 | ||
642 | qsort(l, strv_length(l), sizeof(char*), str_compare); | |
643 | return l; | |
644 | } | |
7c2d8094 | 645 | |
0f84a72e DH |
646 | bool strv_equal(char **a, char **b) { |
647 | if (!a || !b) | |
648 | return a == b; | |
649 | ||
650 | for ( ; *a || *b; ++a, ++b) | |
651 | if (!streq_ptr(*a, *b)) | |
652 | return false; | |
653 | ||
654 | return true; | |
655 | } | |
656 | ||
7c2d8094 TA |
657 | void strv_print(char **l) { |
658 | char **s; | |
659 | ||
7c2d8094 TA |
660 | STRV_FOREACH(s, l) |
661 | puts(*s); | |
662 | } | |
4de33e7f LP |
663 | |
664 | int strv_extendf(char ***l, const char *format, ...) { | |
665 | va_list ap; | |
666 | char *x; | |
667 | int r; | |
668 | ||
669 | va_start(ap, format); | |
670 | r = vasprintf(&x, format, ap); | |
671 | va_end(ap); | |
672 | ||
673 | if (r < 0) | |
674 | return -ENOMEM; | |
675 | ||
676 | return strv_consume(l, x); | |
677 | } | |
e1dd6790 LP |
678 | |
679 | char **strv_reverse(char **l) { | |
680 | unsigned n, i; | |
681 | ||
682 | n = strv_length(l); | |
683 | if (n <= 1) | |
684 | return l; | |
685 | ||
686 | for (i = 0; i < n / 2; i++) { | |
687 | char *t; | |
688 | ||
689 | t = l[i]; | |
690 | l[i] = l[n-1-i]; | |
691 | l[n-1-i] = t; | |
692 | } | |
693 | ||
694 | return l; | |
695 | } | |
bceccd5e | 696 | |
2404701e | 697 | bool strv_fnmatch(char* const* patterns, const char *s, int flags) { |
bceccd5e ZJS |
698 | char* const* p; |
699 | ||
700 | STRV_FOREACH(p, patterns) | |
701 | if (fnmatch(*p, s, 0) == 0) | |
702 | return true; | |
703 | ||
704 | return false; | |
705 | } |