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1.15 ! schwarze 1: /* $Id: mansearch.c,v 1.14 2014/03/21 22:17:01 schwarze Exp $ */
1.1 schwarze 2: /*
3: * Copyright (c) 2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.4 schwarze 4: * Copyright (c) 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18: #include <assert.h>
19: #include <fcntl.h>
20: #include <getopt.h>
21: #include <limits.h>
22: #include <regex.h>
23: #include <stdio.h>
24: #include <stdint.h>
25: #include <stddef.h>
26: #include <stdlib.h>
27: #include <string.h>
28: #include <unistd.h>
29:
30: #include <ohash.h>
31: #include <sqlite3.h>
32:
33: #include "mandoc.h"
1.14 schwarze 34: #include "mandoc_aux.h"
1.1 schwarze 35: #include "manpath.h"
36: #include "mansearch.h"
37:
1.11 schwarze 38: extern int mansearch_keymax;
39: extern const char *const mansearch_keynames[];
40:
1.1 schwarze 41: #define SQL_BIND_TEXT(_db, _s, _i, _v) \
42: do { if (SQLITE_OK != sqlite3_bind_text \
43: ((_s), (_i)++, (_v), -1, SQLITE_STATIC)) \
44: fprintf(stderr, "%s\n", sqlite3_errmsg((_db))); \
45: } while (0)
46: #define SQL_BIND_INT64(_db, _s, _i, _v) \
47: do { if (SQLITE_OK != sqlite3_bind_int64 \
48: ((_s), (_i)++, (_v))) \
49: fprintf(stderr, "%s\n", sqlite3_errmsg((_db))); \
50: } while (0)
51: #define SQL_BIND_BLOB(_db, _s, _i, _v) \
52: do { if (SQLITE_OK != sqlite3_bind_blob \
53: ((_s), (_i)++, (&_v), sizeof(_v), SQLITE_STATIC)) \
54: fprintf(stderr, "%s\n", sqlite3_errmsg((_db))); \
55: } while (0)
56:
57: struct expr {
58: uint64_t bits; /* type-mask */
59: const char *substr; /* to search for, if applicable */
60: regex_t regexp; /* compiled regexp, if applicable */
1.4 schwarze 61: int open; /* opening parentheses before */
62: int and; /* logical AND before */
63: int close; /* closing parentheses after */
1.1 schwarze 64: struct expr *next; /* next in sequence */
65: };
66:
67: struct match {
68: uint64_t id; /* identifier in database */
69: int form; /* 0 == catpage */
70: };
71:
1.8 schwarze 72: static void buildnames(struct manpage *, sqlite3 *,
1.10 schwarze 73: sqlite3_stmt *, uint64_t,
74: const char *, int form);
1.3 schwarze 75: static char *buildoutput(sqlite3 *, sqlite3_stmt *,
76: uint64_t, uint64_t);
1.1 schwarze 77: static void *hash_alloc(size_t, void *);
78: static void hash_free(void *, size_t, void *);
79: static void *hash_halloc(size_t, void *);
80: static struct expr *exprcomp(const struct mansearch *,
81: int, char *[]);
82: static void exprfree(struct expr *);
1.6 schwarze 83: static struct expr *exprspec(struct expr *, uint64_t,
84: const char *, const char *);
1.1 schwarze 85: static struct expr *exprterm(const struct mansearch *, char *, int);
1.4 schwarze 86: static void sql_append(char **sql, size_t *sz,
87: const char *newstr, int count);
1.1 schwarze 88: static void sql_match(sqlite3_context *context,
89: int argc, sqlite3_value **argv);
90: static void sql_regexp(sqlite3_context *context,
91: int argc, sqlite3_value **argv);
1.6 schwarze 92: static char *sql_statement(const struct expr *);
1.1 schwarze 93:
94: int
95: mansearch(const struct mansearch *search,
1.3 schwarze 96: const struct manpaths *paths,
97: int argc, char *argv[],
98: const char *outkey,
1.1 schwarze 99: struct manpage **res, size_t *sz)
100: {
1.11 schwarze 101: int fd, rc, c, indexbit;
1.1 schwarze 102: int64_t id;
1.11 schwarze 103: uint64_t outbit, iterbit;
1.1 schwarze 104: char buf[PATH_MAX];
1.2 schwarze 105: char *sql;
1.1 schwarze 106: struct manpage *mpage;
107: struct expr *e, *ep;
108: sqlite3 *db;
1.3 schwarze 109: sqlite3_stmt *s, *s2;
1.1 schwarze 110: struct match *mp;
111: struct ohash_info info;
112: struct ohash htab;
113: unsigned int idx;
114: size_t i, j, cur, maxres;
115:
116: memset(&info, 0, sizeof(struct ohash_info));
117:
118: info.halloc = hash_halloc;
119: info.alloc = hash_alloc;
120: info.hfree = hash_free;
121: info.key_offset = offsetof(struct match, id);
122:
123: *sz = cur = maxres = 0;
124: sql = NULL;
125: *res = NULL;
126: fd = -1;
127: e = NULL;
128: rc = 0;
129:
130: if (0 == argc)
131: goto out;
132: if (NULL == (e = exprcomp(search, argc, argv)))
133: goto out;
134:
1.3 schwarze 135: outbit = 0;
136: if (NULL != outkey) {
1.11 schwarze 137: for (indexbit = 0, iterbit = 1;
138: indexbit < mansearch_keymax;
139: indexbit++, iterbit <<= 1) {
140: if (0 == strcasecmp(outkey,
141: mansearch_keynames[indexbit])) {
142: outbit = iterbit;
1.3 schwarze 143: break;
144: }
145: }
146: }
147:
1.1 schwarze 148: /*
149: * Save a descriptor to the current working directory.
150: * Since pathnames in the "paths" variable might be relative,
151: * and we'll be chdir()ing into them, we need to keep a handle
152: * on our current directory from which to start the chdir().
153: */
154:
155: if (NULL == getcwd(buf, PATH_MAX)) {
156: perror(NULL);
157: goto out;
158: } else if (-1 == (fd = open(buf, O_RDONLY, 0))) {
159: perror(buf);
160: goto out;
161: }
162:
1.6 schwarze 163: sql = sql_statement(e);
1.1 schwarze 164:
165: /*
166: * Loop over the directories (containing databases) for us to
167: * search.
168: * Don't let missing/bad databases/directories phase us.
169: * In each, try to open the resident database and, if it opens,
170: * scan it for our match expression.
171: */
172:
173: for (i = 0; i < paths->sz; i++) {
174: if (-1 == fchdir(fd)) {
175: perror(buf);
176: free(*res);
177: break;
178: } else if (-1 == chdir(paths->paths[i])) {
179: perror(paths->paths[i]);
180: continue;
181: }
182:
183: c = sqlite3_open_v2
184: (MANDOC_DB, &db,
185: SQLITE_OPEN_READONLY, NULL);
186:
187: if (SQLITE_OK != c) {
188: perror(MANDOC_DB);
189: sqlite3_close(db);
190: continue;
191: }
192:
193: /*
194: * Define the SQL functions for substring
195: * and regular expression matching.
196: */
197:
198: c = sqlite3_create_function(db, "match", 2,
199: SQLITE_ANY, NULL, sql_match, NULL, NULL);
200: assert(SQLITE_OK == c);
201: c = sqlite3_create_function(db, "regexp", 2,
202: SQLITE_ANY, NULL, sql_regexp, NULL, NULL);
203: assert(SQLITE_OK == c);
204:
205: j = 1;
206: c = sqlite3_prepare_v2(db, sql, -1, &s, NULL);
207: if (SQLITE_OK != c)
208: fprintf(stderr, "%s\n", sqlite3_errmsg(db));
209:
210: for (ep = e; NULL != ep; ep = ep->next) {
211: if (NULL == ep->substr) {
212: SQL_BIND_BLOB(db, s, j, ep->regexp);
213: } else
214: SQL_BIND_TEXT(db, s, j, ep->substr);
215: SQL_BIND_INT64(db, s, j, ep->bits);
216: }
217:
218: memset(&htab, 0, sizeof(struct ohash));
219: ohash_init(&htab, 4, &info);
220:
221: /*
222: * Hash each entry on its [unique] document identifier.
223: * This is a uint64_t.
224: * Instead of using a hash function, simply convert the
225: * uint64_t to a uint32_t, the hash value's type.
226: * This gives good performance and preserves the
227: * distribution of buckets in the table.
228: */
229: while (SQLITE_ROW == (c = sqlite3_step(s))) {
1.9 schwarze 230: id = sqlite3_column_int64(s, 1);
1.1 schwarze 231: idx = ohash_lookup_memory
232: (&htab, (char *)&id,
233: sizeof(uint64_t), (uint32_t)id);
234:
235: if (NULL != ohash_find(&htab, idx))
236: continue;
237:
238: mp = mandoc_calloc(1, sizeof(struct match));
239: mp->id = id;
1.9 schwarze 240: mp->form = sqlite3_column_int(s, 0);
1.1 schwarze 241: ohash_insert(&htab, idx, mp);
242: }
243:
244: if (SQLITE_DONE != c)
245: fprintf(stderr, "%s\n", sqlite3_errmsg(db));
246:
247: sqlite3_finalize(s);
248:
249: c = sqlite3_prepare_v2(db,
1.13 schwarze 250: "SELECT * FROM mlinks WHERE pageid=?"
251: " ORDER BY sec, arch, name",
1.1 schwarze 252: -1, &s, NULL);
253: if (SQLITE_OK != c)
254: fprintf(stderr, "%s\n", sqlite3_errmsg(db));
255:
1.3 schwarze 256: c = sqlite3_prepare_v2(db,
257: "SELECT * FROM keys WHERE pageid=? AND bits & ?",
258: -1, &s2, NULL);
259: if (SQLITE_OK != c)
260: fprintf(stderr, "%s\n", sqlite3_errmsg(db));
261:
1.1 schwarze 262: for (mp = ohash_first(&htab, &idx);
263: NULL != mp;
264: mp = ohash_next(&htab, &idx)) {
265: if (cur + 1 > maxres) {
266: maxres += 1024;
267: *res = mandoc_realloc
268: (*res, maxres * sizeof(struct manpage));
269: }
270: mpage = *res + cur;
271: mpage->form = mp->form;
1.10 schwarze 272: buildnames(mpage, db, s, mp->id,
273: paths->paths[i], mp->form);
1.3 schwarze 274: mpage->output = outbit ?
275: buildoutput(db, s2, mp->id, outbit) : NULL;
1.1 schwarze 276:
277: free(mp);
278: cur++;
279: }
280:
281: sqlite3_finalize(s);
1.3 schwarze 282: sqlite3_finalize(s2);
1.1 schwarze 283: sqlite3_close(db);
284: ohash_delete(&htab);
285: }
286: rc = 1;
287: out:
288: exprfree(e);
289: if (-1 != fd)
290: close(fd);
291: free(sql);
292: *sz = cur;
293: return(rc);
1.2 schwarze 294: }
295:
1.8 schwarze 296: static void
297: buildnames(struct manpage *mpage, sqlite3 *db, sqlite3_stmt *s,
1.10 schwarze 298: uint64_t id, const char *path, int form)
1.2 schwarze 299: {
1.13 schwarze 300: char *newnames, *prevsec, *prevarch;
1.10 schwarze 301: const char *oldnames, *sep1, *name, *sec, *sep2, *arch, *fsec;
1.2 schwarze 302: size_t i;
303: int c;
304:
1.8 schwarze 305: mpage->names = NULL;
1.13 schwarze 306: prevsec = prevarch = NULL;
1.2 schwarze 307: i = 1;
308: SQL_BIND_INT64(db, s, i, id);
309: while (SQLITE_ROW == (c = sqlite3_step(s))) {
1.8 schwarze 310:
1.13 schwarze 311: /* Decide whether we already have some names. */
1.8 schwarze 312:
313: if (NULL == mpage->names) {
1.2 schwarze 314: oldnames = "";
315: sep1 = "";
316: } else {
1.8 schwarze 317: oldnames = mpage->names;
1.2 schwarze 318: sep1 = ", ";
319: }
1.13 schwarze 320:
321: /* Fetch the next name. */
322:
1.10 schwarze 323: sec = sqlite3_column_text(s, 0);
324: arch = sqlite3_column_text(s, 1);
325: name = sqlite3_column_text(s, 2);
1.13 schwarze 326:
327: /* If the section changed, append the old one. */
328:
329: if (NULL != prevsec &&
330: (strcmp(sec, prevsec) ||
331: strcmp(arch, prevarch))) {
332: sep2 = '\0' == *prevarch ? "" : "/";
1.15 ! schwarze 333: mandoc_asprintf(&newnames, "%s(%s%s%s)",
! 334: oldnames, prevsec, sep2, prevarch);
1.13 schwarze 335: free(mpage->names);
336: oldnames = mpage->names = newnames;
337: free(prevsec);
338: free(prevarch);
339: prevsec = prevarch = NULL;
340: }
341:
342: /* Save the new section, to append it later. */
343:
344: if (NULL == prevsec) {
345: prevsec = mandoc_strdup(sec);
346: prevarch = mandoc_strdup(arch);
347: }
348:
349: /* Append the new name. */
350:
1.15 ! schwarze 351: mandoc_asprintf(&newnames, "%s%s%s",
! 352: oldnames, sep1, name);
1.8 schwarze 353: free(mpage->names);
354: mpage->names = newnames;
355:
356: /* Also save the first file name encountered. */
357:
358: if (NULL != mpage->file)
359: continue;
360:
1.10 schwarze 361: if (form) {
362: sep1 = "man";
363: fsec = sec;
364: } else {
365: sep1 = "cat";
366: fsec = "0";
367: }
1.13 schwarze 368: sep2 = '\0' == *arch ? "" : "/";
1.15 ! schwarze 369: mandoc_asprintf(&mpage->file, "%s/%s%s%s%s/%s.%s",
! 370: path, sep1, sec, sep2, arch, name, fsec);
1.2 schwarze 371: }
372: if (SQLITE_DONE != c)
373: fprintf(stderr, "%s\n", sqlite3_errmsg(db));
374: sqlite3_reset(s);
1.13 schwarze 375:
376: /* Append one final section to the names. */
377:
378: if (NULL != prevsec) {
379: sep2 = '\0' == *prevarch ? "" : "/";
1.15 ! schwarze 380: mandoc_asprintf(&newnames, "%s(%s%s%s)",
! 381: mpage->names, prevsec, sep2, prevarch);
1.13 schwarze 382: free(mpage->names);
383: mpage->names = newnames;
384: free(prevsec);
385: free(prevarch);
386: }
1.3 schwarze 387: }
388:
389: static char *
390: buildoutput(sqlite3 *db, sqlite3_stmt *s, uint64_t id, uint64_t outbit)
391: {
392: char *output, *newoutput;
393: const char *oldoutput, *sep1, *data;
394: size_t i;
395: int c;
396:
397: output = NULL;
398: i = 1;
399: SQL_BIND_INT64(db, s, i, id);
400: SQL_BIND_INT64(db, s, i, outbit);
401: while (SQLITE_ROW == (c = sqlite3_step(s))) {
402: if (NULL == output) {
403: oldoutput = "";
404: sep1 = "";
405: } else {
406: oldoutput = output;
407: sep1 = " # ";
408: }
409: data = sqlite3_column_text(s, 1);
1.15 ! schwarze 410: mandoc_asprintf(&newoutput, "%s%s%s",
! 411: oldoutput, sep1, data);
1.3 schwarze 412: free(output);
413: output = newoutput;
414: }
415: if (SQLITE_DONE != c)
416: fprintf(stderr, "%s\n", sqlite3_errmsg(db));
417: sqlite3_reset(s);
418: return(output);
1.1 schwarze 419: }
420:
421: /*
422: * Implement substring match as an application-defined SQL function.
423: * Using the SQL LIKE or GLOB operators instead would be a bad idea
424: * because that would require escaping metacharacters in the string
425: * being searched for.
426: */
427: static void
428: sql_match(sqlite3_context *context, int argc, sqlite3_value **argv)
429: {
430:
431: assert(2 == argc);
432: sqlite3_result_int(context, NULL != strcasestr(
433: (const char *)sqlite3_value_text(argv[1]),
434: (const char *)sqlite3_value_text(argv[0])));
435: }
436:
437: /*
438: * Implement regular expression match
439: * as an application-defined SQL function.
440: */
441: static void
442: sql_regexp(sqlite3_context *context, int argc, sqlite3_value **argv)
443: {
444:
445: assert(2 == argc);
446: sqlite3_result_int(context, !regexec(
447: (regex_t *)sqlite3_value_blob(argv[0]),
448: (const char *)sqlite3_value_text(argv[1]),
449: 0, NULL, 0));
450: }
451:
1.4 schwarze 452: static void
453: sql_append(char **sql, size_t *sz, const char *newstr, int count)
454: {
455: size_t newsz;
456:
457: newsz = 1 < count ? (size_t)count : strlen(newstr);
458: *sql = mandoc_realloc(*sql, *sz + newsz + 1);
459: if (1 < count)
460: memset(*sql + *sz, *newstr, (size_t)count);
461: else
462: memcpy(*sql + *sz, newstr, newsz);
463: *sz += newsz;
464: (*sql)[*sz] = '\0';
465: }
466:
1.1 schwarze 467: /*
468: * Prepare the search SQL statement.
469: */
470: static char *
1.6 schwarze 471: sql_statement(const struct expr *e)
1.1 schwarze 472: {
473: char *sql;
474: size_t sz;
1.4 schwarze 475: int needop;
1.1 schwarze 476:
1.4 schwarze 477: sql = mandoc_strdup("SELECT * FROM mpages WHERE ");
1.1 schwarze 478: sz = strlen(sql);
479:
1.4 schwarze 480: for (needop = 0; NULL != e; e = e->next) {
481: if (e->and)
482: sql_append(&sql, &sz, " AND ", 1);
483: else if (needop)
484: sql_append(&sql, &sz, " OR ", 1);
485: if (e->open)
486: sql_append(&sql, &sz, "(", e->open);
487: sql_append(&sql, &sz, NULL == e->substr ?
488: "id IN (SELECT pageid FROM keys "
489: "WHERE key REGEXP ? AND bits & ?)" :
490: "id IN (SELECT pageid FROM keys "
491: "WHERE key MATCH ? AND bits & ?)", 1);
492: if (e->close)
493: sql_append(&sql, &sz, ")", e->close);
494: needop = 1;
1.1 schwarze 495: }
496:
497: return(sql);
498: }
499:
500: /*
501: * Compile a set of string tokens into an expression.
502: * Tokens in "argv" are assumed to be individual expression atoms (e.g.,
503: * "(", "foo=bar", etc.).
504: */
505: static struct expr *
506: exprcomp(const struct mansearch *search, int argc, char *argv[])
507: {
1.4 schwarze 508: int i, toopen, logic, igncase, toclose;
1.1 schwarze 509: struct expr *first, *next, *cur;
510:
511: first = cur = NULL;
1.6 schwarze 512: logic = igncase = toclose = 0;
513: toopen = 1;
1.1 schwarze 514:
515: for (i = 0; i < argc; i++) {
1.4 schwarze 516: if (0 == strcmp("(", argv[i])) {
517: if (igncase)
518: goto fail;
519: toopen++;
520: toclose++;
521: continue;
522: } else if (0 == strcmp(")", argv[i])) {
523: if (toopen || logic || igncase || NULL == cur)
524: goto fail;
525: cur->close++;
526: if (0 > --toclose)
527: goto fail;
528: continue;
529: } else if (0 == strcmp("-a", argv[i])) {
530: if (toopen || logic || igncase || NULL == cur)
531: goto fail;
532: logic = 1;
533: continue;
534: } else if (0 == strcmp("-o", argv[i])) {
535: if (toopen || logic || igncase || NULL == cur)
536: goto fail;
537: logic = 2;
538: continue;
539: } else if (0 == strcmp("-i", argv[i])) {
540: if (igncase)
541: goto fail;
542: igncase = 1;
543: continue;
1.1 schwarze 544: }
1.4 schwarze 545: next = exprterm(search, argv[i], !igncase);
546: if (NULL == next)
547: goto fail;
548: next->open = toopen;
549: next->and = (1 == logic);
1.1 schwarze 550: if (NULL != first) {
551: cur->next = next;
552: cur = next;
553: } else
554: cur = first = next;
1.4 schwarze 555: toopen = logic = igncase = 0;
1.1 schwarze 556: }
1.6 schwarze 557: if (toopen || logic || igncase || toclose)
558: goto fail;
559:
560: cur->close++;
561: cur = exprspec(cur, TYPE_arch, search->arch, "^(%s|any)$");
562: exprspec(cur, TYPE_sec, search->sec, "^%s$");
563:
564: return(first);
565:
1.4 schwarze 566: fail:
567: if (NULL != first)
568: exprfree(first);
569: return(NULL);
1.1 schwarze 570: }
571:
572: static struct expr *
1.6 schwarze 573: exprspec(struct expr *cur, uint64_t key, const char *value,
574: const char *format)
575: {
576: char errbuf[BUFSIZ];
577: char *cp;
578: int irc;
579:
580: if (NULL == value)
581: return(cur);
582:
1.15 ! schwarze 583: mandoc_asprintf(&cp, format, value);
1.6 schwarze 584: cur->next = mandoc_calloc(1, sizeof(struct expr));
585: cur = cur->next;
586: cur->and = 1;
587: cur->bits = key;
588: if (0 != (irc = regcomp(&cur->regexp, cp,
589: REG_EXTENDED | REG_NOSUB | REG_ICASE))) {
590: regerror(irc, &cur->regexp, errbuf, sizeof(errbuf));
591: fprintf(stderr, "regcomp: %s\n", errbuf);
592: cur->substr = value;
593: }
594: free(cp);
595: return(cur);
596: }
597:
598: static struct expr *
1.1 schwarze 599: exprterm(const struct mansearch *search, char *buf, int cs)
600: {
1.6 schwarze 601: char errbuf[BUFSIZ];
1.1 schwarze 602: struct expr *e;
603: char *key, *v;
1.11 schwarze 604: uint64_t iterbit;
605: int i, irc;
1.1 schwarze 606:
607: if ('\0' == *buf)
608: return(NULL);
609:
610: e = mandoc_calloc(1, sizeof(struct expr));
611:
612: /*"whatis" mode uses an opaque string and default fields. */
613:
614: if (MANSEARCH_WHATIS & search->flags) {
615: e->substr = buf;
616: e->bits = search->deftype;
617: return(e);
618: }
619:
620: /*
621: * If no =~ is specified, search with equality over names and
622: * descriptions.
623: * If =~ begins the phrase, use name and description fields.
624: */
625:
626: if (NULL == (v = strpbrk(buf, "=~"))) {
627: e->substr = buf;
628: e->bits = search->deftype;
629: return(e);
630: } else if (v == buf)
631: e->bits = search->deftype;
632:
633: if ('~' == *v++) {
1.12 schwarze 634: if (NULL != strstr(buf, "arch"))
635: cs = 0;
1.6 schwarze 636: if (0 != (irc = regcomp(&e->regexp, v,
637: REG_EXTENDED | REG_NOSUB | (cs ? 0 : REG_ICASE)))) {
638: regerror(irc, &e->regexp, errbuf, sizeof(errbuf));
639: fprintf(stderr, "regcomp: %s\n", errbuf);
1.1 schwarze 640: free(e);
641: return(NULL);
642: }
643: } else
644: e->substr = v;
645: v[-1] = '\0';
646:
647: /*
648: * Parse out all possible fields.
649: * If the field doesn't resolve, bail.
650: */
651:
652: while (NULL != (key = strsep(&buf, ","))) {
653: if ('\0' == *key)
654: continue;
1.11 schwarze 655: for (i = 0, iterbit = 1;
656: i < mansearch_keymax;
657: i++, iterbit <<= 1) {
658: if (0 == strcasecmp(key,
659: mansearch_keynames[i])) {
660: e->bits |= iterbit;
661: break;
662: }
663: }
664: if (i == mansearch_keymax) {
665: if (strcasecmp(key, "any")) {
666: free(e);
667: return(NULL);
668: }
669: e->bits |= ~0ULL;
1.1 schwarze 670: }
671: }
672:
673: return(e);
674: }
675:
676: static void
677: exprfree(struct expr *p)
678: {
679: struct expr *pp;
680:
681: while (NULL != p) {
682: pp = p->next;
683: free(p);
684: p = pp;
685: }
686: }
687:
688: static void *
689: hash_halloc(size_t sz, void *arg)
690: {
691:
692: return(mandoc_calloc(sz, 1));
693: }
694:
695: static void *
696: hash_alloc(size_t sz, void *arg)
697: {
698:
699: return(mandoc_malloc(sz));
700: }
701:
702: static void
703: hash_free(void *p, size_t sz, void *arg)
704: {
705:
706: free(p);
707: }