=================================================================== RCS file: /cvs/mandoc/mansearch.c,v retrieving revision 1.25 retrieving revision 1.65 diff -u -p -r1.25 -r1.65 --- mandoc/mansearch.c 2014/03/28 19:17:12 1.25 +++ mandoc/mansearch.c 2016/07/09 15:24:19 1.65 @@ -1,27 +1,32 @@ -/* $Id: mansearch.c,v 1.25 2014/03/28 19:17:12 schwarze Exp $ */ +/* $Id: mansearch.c,v 1.65 2016/07/09 15:24:19 schwarze Exp $ */ /* * Copyright (c) 2012 Kristaps Dzonsons - * Copyright (c) 2013, 2014 Ingo Schwarze + * Copyright (c) 2013, 2014, 2015 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ -#ifdef HAVE_CONFIG_H #include "config.h" -#endif +#include +#include + #include +#if HAVE_ERR +#include +#endif +#include #include -#include +#include #include #include #include @@ -31,16 +36,15 @@ #include #include -#ifdef HAVE_OHASH -#include -#else -#include "compat_ohash.h" -#endif #include +#ifndef SQLITE_DETERMINISTIC +#define SQLITE_DETERMINISTIC 0 +#endif #include "mandoc.h" #include "mandoc_aux.h" -#include "manpath.h" +#include "mandoc_ohash.h" +#include "manconf.h" #include "mansearch.h" extern int mansearch_keymax; @@ -49,48 +53,48 @@ extern const char *const mansearch_keynames[]; #define SQL_BIND_TEXT(_db, _s, _i, _v) \ do { if (SQLITE_OK != sqlite3_bind_text \ ((_s), (_i)++, (_v), -1, SQLITE_STATIC)) \ - fprintf(stderr, "%s\n", sqlite3_errmsg((_db))); \ + errx((int)MANDOCLEVEL_SYSERR, "%s", sqlite3_errmsg((_db))); \ } while (0) #define SQL_BIND_INT64(_db, _s, _i, _v) \ do { if (SQLITE_OK != sqlite3_bind_int64 \ ((_s), (_i)++, (_v))) \ - fprintf(stderr, "%s\n", sqlite3_errmsg((_db))); \ + errx((int)MANDOCLEVEL_SYSERR, "%s", sqlite3_errmsg((_db))); \ } while (0) #define SQL_BIND_BLOB(_db, _s, _i, _v) \ do { if (SQLITE_OK != sqlite3_bind_blob \ ((_s), (_i)++, (&_v), sizeof(_v), SQLITE_STATIC)) \ - fprintf(stderr, "%s\n", sqlite3_errmsg((_db))); \ + errx((int)MANDOCLEVEL_SYSERR, "%s", sqlite3_errmsg((_db))); \ } while (0) struct expr { - uint64_t bits; /* type-mask */ - const char *substr; /* to search for, if applicable */ regex_t regexp; /* compiled regexp, if applicable */ + const char *substr; /* to search for, if applicable */ + struct expr *next; /* next in sequence */ + uint64_t bits; /* type-mask */ + int equal; /* equality, not subsring match */ int open; /* opening parentheses before */ int and; /* logical AND before */ int close; /* closing parentheses after */ - struct expr *next; /* next in sequence */ }; struct match { - uint64_t id; /* identifier in database */ - int form; /* 0 == catpage */ + uint64_t pageid; /* identifier in database */ + uint64_t bits; /* name type mask */ + char *desc; /* manual page description */ + int form; /* bit field: formatted, zipped? */ }; -static void buildnames(struct manpage *, sqlite3 *, +static void buildnames(const struct mansearch *, + struct manpage *, sqlite3 *, sqlite3_stmt *, uint64_t, const char *, int form); static char *buildoutput(sqlite3 *, sqlite3_stmt *, uint64_t, uint64_t); -static void *hash_alloc(size_t, void *); -static void hash_free(void *, size_t, void *); -static void *hash_halloc(size_t, void *); -static struct expr *exprcomp(const struct mansearch *, +static struct expr *exprcomp(const struct mansearch *, int, char *[]); static void exprfree(struct expr *); -static struct expr *exprspec(struct expr *, uint64_t, - const char *, const char *); static struct expr *exprterm(const struct mansearch *, char *, int); +static int manpage_compare(const void *, const void *); static void sql_append(char **sql, size_t *sz, const char *newstr, int count); static void sql_match(sqlite3_context *context, @@ -99,15 +103,62 @@ static void sql_regexp(sqlite3_context *context, int argc, sqlite3_value **argv); static char *sql_statement(const struct expr *); + int +mansearch_setup(int start) +{ + static void *pagecache; + int c; + +#define PC_PAGESIZE 1280 +#define PC_NUMPAGES 256 + + if (start) { + if (NULL != pagecache) { + warnx("pagecache already enabled"); + return (int)MANDOCLEVEL_BADARG; + } + + pagecache = mmap(NULL, PC_PAGESIZE * PC_NUMPAGES, + PROT_READ | PROT_WRITE, + MAP_SHARED | MAP_ANON, -1, 0); + + if (MAP_FAILED == pagecache) { + warn("mmap"); + pagecache = NULL; + return (int)MANDOCLEVEL_SYSERR; + } + + c = sqlite3_config(SQLITE_CONFIG_PAGECACHE, + pagecache, PC_PAGESIZE, PC_NUMPAGES); + + if (SQLITE_OK == c) + return (int)MANDOCLEVEL_OK; + + warnx("pagecache: %s", sqlite3_errstr(c)); + + } else if (NULL == pagecache) { + warnx("pagecache missing"); + return (int)MANDOCLEVEL_BADARG; + } + + if (-1 == munmap(pagecache, PC_PAGESIZE * PC_NUMPAGES)) { + warn("munmap"); + pagecache = NULL; + return (int)MANDOCLEVEL_SYSERR; + } + + pagecache = NULL; + return (int)MANDOCLEVEL_OK; +} + +int mansearch(const struct mansearch *search, const struct manpaths *paths, int argc, char *argv[], - const char *outkey, struct manpage **res, size_t *sz) { - int fd, rc, c, indexbit; - int64_t id; + int64_t pageid; uint64_t outbit, iterbit; char buf[PATH_MAX]; char *sql; @@ -116,57 +167,46 @@ mansearch(const struct mansearch *search, sqlite3 *db; sqlite3_stmt *s, *s2; struct match *mp; - struct ohash_info info; struct ohash htab; unsigned int idx; size_t i, j, cur, maxres; + int c, chdir_status, getcwd_status, indexbit; - memset(&info, 0, sizeof(struct ohash_info)); + if (argc == 0 || (e = exprcomp(search, argc, argv)) == NULL) { + *sz = 0; + return 0; + } - info.halloc = hash_halloc; - info.alloc = hash_alloc; - info.hfree = hash_free; - info.key_offset = offsetof(struct match, id); - - *sz = cur = maxres = 0; - sql = NULL; + cur = maxres = 0; *res = NULL; - fd = -1; - e = NULL; - rc = 0; - if (0 == argc) - goto out; - if (NULL == (e = exprcomp(search, argc, argv))) - goto out; - - outbit = 0; - if (NULL != outkey) { + if (NULL != search->outkey) { + outbit = TYPE_Nd; for (indexbit = 0, iterbit = 1; indexbit < mansearch_keymax; indexbit++, iterbit <<= 1) { - if (0 == strcasecmp(outkey, + if (0 == strcasecmp(search->outkey, mansearch_keynames[indexbit])) { outbit = iterbit; break; } } - } + } else + outbit = 0; /* - * Save a descriptor to the current working directory. - * Since pathnames in the "paths" variable might be relative, - * and we'll be chdir()ing into them, we need to keep a handle - * on our current directory from which to start the chdir(). + * Remember the original working directory, if possible. + * This will be needed if the second or a later directory + * is given as a relative path. + * Do not error out if the current directory is not + * searchable: Maybe it won't be needed after all. */ - if (NULL == getcwd(buf, PATH_MAX)) { - perror(NULL); - goto out; - } else if (-1 == (fd = open(buf, O_RDONLY, 0))) { - perror(buf); - goto out; - } + if (getcwd(buf, PATH_MAX) == NULL) { + getcwd_status = 0; + (void)strlcpy(buf, strerror(errno), sizeof(buf)); + } else + getcwd_status = 1; sql = sql_statement(e); @@ -178,22 +218,28 @@ mansearch(const struct mansearch *search, * scan it for our match expression. */ + chdir_status = 0; for (i = 0; i < paths->sz; i++) { - if (-1 == fchdir(fd)) { - perror(buf); - free(*res); - break; - } else if (-1 == chdir(paths->paths[i])) { - perror(paths->paths[i]); + if (chdir_status && paths->paths[i][0] != '/') { + if ( ! getcwd_status) { + warnx("%s: getcwd: %s", paths->paths[i], buf); + continue; + } else if (chdir(buf) == -1) { + warn("%s", buf); + continue; + } + } + if (chdir(paths->paths[i]) == -1) { + warn("%s", paths->paths[i]); continue; - } + } + chdir_status = 1; - c = sqlite3_open_v2 - (MANDOC_DB, &db, - SQLITE_OPEN_READONLY, NULL); + c = sqlite3_open_v2(MANDOC_DB, &db, + SQLITE_OPEN_READONLY, NULL); if (SQLITE_OK != c) { - perror(MANDOC_DB); + warn("%s/%s", paths->paths[i], MANDOC_DB); sqlite3_close(db); continue; } @@ -204,27 +250,30 @@ mansearch(const struct mansearch *search, */ c = sqlite3_create_function(db, "match", 2, - SQLITE_ANY, NULL, sql_match, NULL, NULL); + SQLITE_UTF8 | SQLITE_DETERMINISTIC, + NULL, sql_match, NULL, NULL); assert(SQLITE_OK == c); c = sqlite3_create_function(db, "regexp", 2, - SQLITE_ANY, NULL, sql_regexp, NULL, NULL); + SQLITE_UTF8 | SQLITE_DETERMINISTIC, + NULL, sql_regexp, NULL, NULL); assert(SQLITE_OK == c); j = 1; c = sqlite3_prepare_v2(db, sql, -1, &s, NULL); if (SQLITE_OK != c) - fprintf(stderr, "%s\n", sqlite3_errmsg(db)); + errx((int)MANDOCLEVEL_SYSERR, + "%s", sqlite3_errmsg(db)); for (ep = e; NULL != ep; ep = ep->next) { if (NULL == ep->substr) { SQL_BIND_BLOB(db, s, j, ep->regexp); } else SQL_BIND_TEXT(db, s, j, ep->substr); - SQL_BIND_INT64(db, s, j, ep->bits); + if (0 == ((TYPE_Nd | TYPE_Nm) & ep->bits)) + SQL_BIND_INT64(db, s, j, ep->bits); } - memset(&htab, 0, sizeof(struct ohash)); - ohash_init(&htab, 4, &info); + mandoc_ohash_init(&htab, 4, offsetof(struct match, pageid)); /* * Hash each entry on its [unique] document identifier. @@ -235,86 +284,134 @@ mansearch(const struct mansearch *search, * distribution of buckets in the table. */ while (SQLITE_ROW == (c = sqlite3_step(s))) { - id = sqlite3_column_int64(s, 1); - idx = ohash_lookup_memory - (&htab, (char *)&id, - sizeof(uint64_t), (uint32_t)id); + pageid = sqlite3_column_int64(s, 2); + idx = ohash_lookup_memory(&htab, + (char *)&pageid, sizeof(uint64_t), + (uint32_t)pageid); if (NULL != ohash_find(&htab, idx)) continue; mp = mandoc_calloc(1, sizeof(struct match)); - mp->id = id; - mp->form = sqlite3_column_int(s, 0); + mp->pageid = pageid; + mp->form = sqlite3_column_int(s, 1); + mp->bits = sqlite3_column_int64(s, 3); + if (TYPE_Nd == outbit) + mp->desc = mandoc_strdup((const char *) + sqlite3_column_text(s, 0)); ohash_insert(&htab, idx, mp); } if (SQLITE_DONE != c) - fprintf(stderr, "%s\n", sqlite3_errmsg(db)); + warnx("%s", sqlite3_errmsg(db)); sqlite3_finalize(s); - c = sqlite3_prepare_v2(db, - "SELECT * FROM mlinks WHERE pageid=?" - " ORDER BY sec, arch, name", + c = sqlite3_prepare_v2(db, + "SELECT sec, arch, name, pageid FROM mlinks " + "WHERE pageid=? ORDER BY sec, arch, name", -1, &s, NULL); if (SQLITE_OK != c) - fprintf(stderr, "%s\n", sqlite3_errmsg(db)); + errx((int)MANDOCLEVEL_SYSERR, + "%s", sqlite3_errmsg(db)); c = sqlite3_prepare_v2(db, - "SELECT * FROM keys WHERE pageid=? AND bits & ?", + "SELECT bits, key, pageid FROM keys " + "WHERE pageid=? AND bits & ?", -1, &s2, NULL); if (SQLITE_OK != c) - fprintf(stderr, "%s\n", sqlite3_errmsg(db)); + errx((int)MANDOCLEVEL_SYSERR, + "%s", sqlite3_errmsg(db)); for (mp = ohash_first(&htab, &idx); NULL != mp; mp = ohash_next(&htab, &idx)) { if (cur + 1 > maxres) { maxres += 1024; - *res = mandoc_realloc - (*res, maxres * sizeof(struct manpage)); + *res = mandoc_reallocarray(*res, + maxres, sizeof(struct manpage)); } mpage = *res + cur; + mpage->ipath = i; + mpage->bits = mp->bits; + mpage->sec = 10; mpage->form = mp->form; - buildnames(mpage, db, s, mp->id, + buildnames(search, mpage, db, s, mp->pageid, paths->paths[i], mp->form); - mpage->output = outbit ? - buildoutput(db, s2, mp->id, outbit) : NULL; - + if (mpage->names != NULL) { + mpage->output = TYPE_Nd & outbit ? + mp->desc : outbit ? + buildoutput(db, s2, mp->pageid, outbit) : + NULL; + cur++; + } free(mp); - cur++; } sqlite3_finalize(s); sqlite3_finalize(s2); sqlite3_close(db); ohash_delete(&htab); + + /* + * In man(1) mode, prefer matches in earlier trees + * over matches in later trees. + */ + + if (cur && search->firstmatch) + break; } - rc = 1; -out: + qsort(*res, cur, sizeof(struct manpage), manpage_compare); + if (chdir_status && getcwd_status && chdir(buf) == -1) + warn("%s", buf); exprfree(e); - if (-1 != fd) - close(fd); free(sql); *sz = cur; - return(rc); + return 1; } +void +mansearch_free(struct manpage *res, size_t sz) +{ + size_t i; + + for (i = 0; i < sz; i++) { + free(res[i].file); + free(res[i].names); + free(res[i].output); + } + free(res); +} + +static int +manpage_compare(const void *vp1, const void *vp2) +{ + const struct manpage *mp1, *mp2; + int diff; + + mp1 = vp1; + mp2 = vp2; + return (diff = mp2->bits - mp1->bits) ? diff : + (diff = mp1->sec - mp2->sec) ? diff : + strcasecmp(mp1->names, mp2->names); +} + static void -buildnames(struct manpage *mpage, sqlite3 *db, sqlite3_stmt *s, - uint64_t id, const char *path, int form) +buildnames(const struct mansearch *search, struct manpage *mpage, + sqlite3 *db, sqlite3_stmt *s, + uint64_t pageid, const char *path, int form) { - char *newnames, *prevsec, *prevarch; + glob_t globinfo; + char *firstname, *newnames, *prevsec, *prevarch; const char *oldnames, *sep1, *name, *sec, *sep2, *arch, *fsec; size_t i; - int c; + int c, globres; mpage->file = NULL; mpage->names = NULL; - prevsec = prevarch = NULL; + firstname = prevsec = prevarch = NULL; i = 1; - SQL_BIND_INT64(db, s, i, id); + SQL_BIND_INT64(db, s, i, pageid); while (SQLITE_ROW == (c = sqlite3_step(s))) { /* Decide whether we already have some names. */ @@ -327,12 +424,22 @@ buildnames(struct manpage *mpage, sqlite3 *db, sqlite3 sep1 = ", "; } - /* Fetch the next name. */ + /* Fetch the next name, rejecting sec/arch mismatches. */ - sec = sqlite3_column_text(s, 0); - arch = sqlite3_column_text(s, 1); - name = sqlite3_column_text(s, 2); + sec = (const char *)sqlite3_column_text(s, 0); + if (search->sec != NULL && strcasecmp(sec, search->sec)) + continue; + arch = (const char *)sqlite3_column_text(s, 1); + if (search->arch != NULL && *arch != '\0' && + strcasecmp(arch, search->arch)) + continue; + name = (const char *)sqlite3_column_text(s, 2); + /* Remember the first section found. */ + + if (9 < mpage->sec && '1' <= *sec && '9' >= *sec) + mpage->sec = (*sec - '1') + 1; + /* If the section changed, append the old one. */ if (NULL != prevsec && @@ -364,28 +471,51 @@ buildnames(struct manpage *mpage, sqlite3 *db, sqlite3 /* Also save the first file name encountered. */ - if (NULL != mpage->file) + if (mpage->file != NULL) continue; - if (form) { + if (form & FORM_SRC) { sep1 = "man"; fsec = sec; } else { sep1 = "cat"; fsec = "0"; } - sep2 = '\0' == *arch ? "" : "/"; + sep2 = *arch == '\0' ? "" : "/"; mandoc_asprintf(&mpage->file, "%s/%s%s%s%s/%s.%s", path, sep1, sec, sep2, arch, name, fsec); + if (access(mpage->file, R_OK) != -1) + continue; + + /* Handle unusual file name extensions. */ + + if (firstname == NULL) + firstname = mpage->file; + else + free(mpage->file); + mandoc_asprintf(&mpage->file, "%s/%s%s%s%s/%s.*", + path, sep1, sec, sep2, arch, name); + globres = glob(mpage->file, 0, NULL, &globinfo); + free(mpage->file); + mpage->file = globres ? NULL : + mandoc_strdup(*globinfo.gl_pathv); + globfree(&globinfo); } - if (SQLITE_DONE != c) - fprintf(stderr, "%s\n", sqlite3_errmsg(db)); + if (c != SQLITE_DONE) + warnx("%s", sqlite3_errmsg(db)); sqlite3_reset(s); + /* If none of the files is usable, use the first name. */ + + if (mpage->file == NULL) + mpage->file = firstname; + else if (mpage->file != firstname) + free(firstname); + /* Append one final section to the names. */ - if (NULL != prevsec) { - sep2 = '\0' == *prevarch ? "" : "/"; + if (prevsec != NULL) { + sep2 = *prevarch == '\0' ? "" : "/"; mandoc_asprintf(&newnames, "%s(%s%s%s)", mpage->names, prevsec, sep2, prevarch); free(mpage->names); @@ -396,7 +526,7 @@ buildnames(struct manpage *mpage, sqlite3 *db, sqlite3 } static char * -buildoutput(sqlite3 *db, sqlite3_stmt *s, uint64_t id, uint64_t outbit) +buildoutput(sqlite3 *db, sqlite3_stmt *s, uint64_t pageid, uint64_t outbit) { char *output, *newoutput; const char *oldoutput, *sep1, *data; @@ -405,7 +535,7 @@ buildoutput(sqlite3 *db, sqlite3_stmt *s, uint64_t id, output = NULL; i = 1; - SQL_BIND_INT64(db, s, i, id); + SQL_BIND_INT64(db, s, i, pageid); SQL_BIND_INT64(db, s, i, outbit); while (SQLITE_ROW == (c = sqlite3_step(s))) { if (NULL == output) { @@ -415,16 +545,16 @@ buildoutput(sqlite3 *db, sqlite3_stmt *s, uint64_t id, oldoutput = output; sep1 = " # "; } - data = sqlite3_column_text(s, 1); + data = (const char *)sqlite3_column_text(s, 1); mandoc_asprintf(&newoutput, "%s%s%s", oldoutput, sep1, data); free(output); output = newoutput; } if (SQLITE_DONE != c) - fprintf(stderr, "%s\n", sqlite3_errmsg(db)); + warnx("%s", sqlite3_errmsg(db)); sqlite3_reset(s); - return(output); + return output; } /* @@ -483,7 +613,10 @@ sql_statement(const struct expr *e) size_t sz; int needop; - sql = mandoc_strdup("SELECT * FROM mpages WHERE "); + sql = mandoc_strdup(e->equal ? + "SELECT desc, form, pageid, bits " + "FROM mpages NATURAL JOIN names WHERE " : + "SELECT desc, form, pageid, 0 FROM mpages WHERE "); sz = strlen(sql); for (needop = 0; NULL != e; e = e->next) { @@ -493,17 +626,30 @@ sql_statement(const struct expr *e) sql_append(&sql, &sz, " OR ", 1); if (e->open) sql_append(&sql, &sz, "(", e->open); - sql_append(&sql, &sz, NULL == e->substr ? - "id IN (SELECT pageid FROM keys " - "WHERE key REGEXP ? AND bits & ?)" : - "id IN (SELECT pageid FROM keys " - "WHERE key MATCH ? AND bits & ?)", 1); + sql_append(&sql, &sz, + TYPE_Nd & e->bits + ? (NULL == e->substr + ? "desc REGEXP ?" + : "desc MATCH ?") + : TYPE_Nm == e->bits + ? (NULL == e->substr + ? "pageid IN (SELECT pageid FROM names " + "WHERE name REGEXP ?)" + : e->equal + ? "name = ? " + : "pageid IN (SELECT pageid FROM names " + "WHERE name MATCH ?)") + : (NULL == e->substr + ? "pageid IN (SELECT pageid FROM keys " + "WHERE key REGEXP ? AND bits & ?)" + : "pageid IN (SELECT pageid FROM keys " + "WHERE key MATCH ? AND bits & ?)"), 1); if (e->close) sql_append(&sql, &sz, ")", e->close); needop = 1; } - return(sql); + return sql; } /* @@ -514,12 +660,12 @@ sql_statement(const struct expr *e) static struct expr * exprcomp(const struct mansearch *search, int argc, char *argv[]) { + uint64_t mask; int i, toopen, logic, igncase, toclose; - struct expr *first, *next, *cur; + struct expr *first, *prev, *cur, *next; first = cur = NULL; - logic = igncase = toclose = 0; - toopen = 1; + logic = igncase = toopen = toclose = 0; for (i = 0; i < argc; i++) { if (0 == strcmp("(", argv[i])) { @@ -554,105 +700,116 @@ exprcomp(const struct mansearch *search, int argc, cha next = exprterm(search, argv[i], !igncase); if (NULL == next) goto fail; - next->open = toopen; - next->and = (1 == logic); - if (NULL != first) { + if (NULL == first) + first = next; + else cur->next = next; - cur = next; - } else - cur = first = next; - toopen = logic = igncase = 0; - } - if (toopen || logic || igncase || toclose) - goto fail; + prev = cur = next; - cur->close++; - cur = exprspec(cur, TYPE_arch, search->arch, "^(%s|any)$"); - exprspec(cur, TYPE_sec, search->sec, "^%s$"); + /* + * Searching for descriptions must be split out + * because they are stored in the mpages table, + * not in the keys table. + */ - return(first); + for (mask = TYPE_Nm; mask <= TYPE_Nd; mask <<= 1) { + if (mask & cur->bits && ~mask & cur->bits) { + next = mandoc_calloc(1, + sizeof(struct expr)); + memcpy(next, cur, sizeof(struct expr)); + prev->open = 1; + cur->bits = mask; + cur->next = next; + cur = next; + cur->bits &= ~mask; + } + } + prev->and = (1 == logic); + prev->open += toopen; + if (cur != prev) + cur->close = 1; + toopen = logic = igncase = 0; + } + if ( ! (toopen || logic || igncase || toclose)) + return first; + fail: if (NULL != first) exprfree(first); - return(NULL); + return NULL; } static struct expr * -exprspec(struct expr *cur, uint64_t key, const char *value, - const char *format) -{ - char errbuf[BUFSIZ]; - char *cp; - int irc; - - if (NULL == value) - return(cur); - - mandoc_asprintf(&cp, format, value); - cur->next = mandoc_calloc(1, sizeof(struct expr)); - cur = cur->next; - cur->and = 1; - cur->bits = key; - if (0 != (irc = regcomp(&cur->regexp, cp, - REG_EXTENDED | REG_NOSUB | REG_ICASE))) { - regerror(irc, &cur->regexp, errbuf, sizeof(errbuf)); - fprintf(stderr, "regcomp: %s\n", errbuf); - cur->substr = value; - } - free(cp); - return(cur); -} - -static struct expr * exprterm(const struct mansearch *search, char *buf, int cs) { char errbuf[BUFSIZ]; struct expr *e; - char *key, *v; + char *key, *val; uint64_t iterbit; int i, irc; if ('\0' == *buf) - return(NULL); + return NULL; e = mandoc_calloc(1, sizeof(struct expr)); - /*"whatis" mode uses an opaque string and default fields. */ - - if (MANSEARCH_WHATIS & search->flags) { + if (search->argmode == ARG_NAME) { + e->bits = TYPE_Nm; e->substr = buf; - e->bits = search->deftype; - return(e); + e->equal = 1; + return e; } /* - * If no =~ is specified, search with equality over names and - * descriptions. - * If =~ begins the phrase, use name and description fields. + * Separate macro keys from search string. + * If needed, request regular expression handling + * by setting e->substr to NULL. */ - if (NULL == (v = strpbrk(buf, "=~"))) { + if (search->argmode == ARG_WORD) { + e->bits = TYPE_Nm; + e->substr = NULL; +#if HAVE_REWB_BSD + mandoc_asprintf(&val, "[[:<:]]%s[[:>:]]", buf); +#elif HAVE_REWB_SYSV + mandoc_asprintf(&val, "\\<%s\\>", buf); +#else + mandoc_asprintf(&val, + "(^|[^a-zA-Z01-9_])%s([^a-zA-Z01-9_]|$)", buf); +#endif + cs = 0; + } else if ((val = strpbrk(buf, "=~")) == NULL) { + e->bits = TYPE_Nm | TYPE_Nd; e->substr = buf; - e->bits = search->deftype; - return(e); - } else if (v == buf) - e->bits = search->deftype; - - if ('~' == *v++) { + } else { + if (val == buf) + e->bits = TYPE_Nm | TYPE_Nd; + if ('=' == *val) + e->substr = val + 1; + *val++ = '\0'; if (NULL != strstr(buf, "arch")) cs = 0; - if (0 != (irc = regcomp(&e->regexp, v, - REG_EXTENDED | REG_NOSUB | (cs ? 0 : REG_ICASE)))) { + } + + /* Compile regular expressions. */ + + if (NULL == e->substr) { + irc = regcomp(&e->regexp, val, + REG_EXTENDED | REG_NOSUB | (cs ? 0 : REG_ICASE)); + if (search->argmode == ARG_WORD) + free(val); + if (irc) { regerror(irc, &e->regexp, errbuf, sizeof(errbuf)); - fprintf(stderr, "regcomp: %s\n", errbuf); + warnx("regcomp: %s", errbuf); free(e); - return(NULL); + return NULL; } - } else - e->substr = v; - v[-1] = '\0'; + } + if (e->bits) + return e; + /* * Parse out all possible fields. * If the field doesn't resolve, bail. @@ -673,13 +830,13 @@ exprterm(const struct mansearch *search, char *buf, in if (i == mansearch_keymax) { if (strcasecmp(key, "any")) { free(e); - return(NULL); + return NULL; } e->bits |= ~0ULL; } } - return(e); + return e; } static void @@ -692,25 +849,4 @@ exprfree(struct expr *p) free(p); p = pp; } -} - -static void * -hash_halloc(size_t sz, void *arg) -{ - - return(mandoc_calloc(sz, 1)); -} - -static void * -hash_alloc(size_t sz, void *arg) -{ - - return(mandoc_malloc(sz)); -} - -static void -hash_free(void *p, size_t sz, void *arg) -{ - - free(p); }