-/* $Id: mansearch.c,v 1.6 2013/06/05 02:00:26 schwarze Exp $ */
+/* $Id: mansearch.c,v 1.58 2015/10/06 18:32:19 schwarze Exp $ */
/*
* Copyright (c) 2012 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2013, 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
*
* 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 <sys/mman.h>
+#include <sys/types.h>
#include <assert.h>
+#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
+#include <glob.h>
#include <limits.h>
+#include <regex.h>
#include <stdio.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include <unistd.h>
-#ifdef HAVE_OHASH
+#if HAVE_OHASH
#include <ohash.h>
#else
#include "compat_ohash.h"
#endif
#include <sqlite3.h>
+#ifndef SQLITE_DETERMINISTIC
+#define SQLITE_DETERMINISTIC 0
+#endif
#include "mandoc.h"
-#include "manpath.h"
+#include "mandoc_aux.h"
+#include "manconf.h"
#include "mansearch.h"
+extern int mansearch_keymax;
+extern const char *const mansearch_keynames[];
+
#define SQL_BIND_TEXT(_db, _s, _i, _v) \
- if (SQLITE_OK != sqlite3_bind_text \
+ do { if (SQLITE_OK != sqlite3_bind_text \
((_s), (_i)++, (_v), -1, SQLITE_STATIC)) \
- fprintf(stderr, "%s\n", sqlite3_errmsg((_db)))
+ fprintf(stderr, "%s\n", sqlite3_errmsg((_db))); \
+ } while (0)
#define SQL_BIND_INT64(_db, _s, _i, _v) \
- if (SQLITE_OK != sqlite3_bind_int64 \
+ do { if (SQLITE_OK != sqlite3_bind_int64 \
((_s), (_i)++, (_v))) \
- fprintf(stderr, "%s\n", sqlite3_errmsg((_db)))
+ fprintf(stderr, "%s\n", 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))); \
+ } while (0)
struct expr {
- int glob; /* is glob? */
- uint64_t bits; /* type-mask */
- const char *v; /* search value */
- struct expr *next; /* next in sequence */
+ 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 match {
- uint64_t id; /* identifier in database */
- char *file; /* relative filepath of manpage */
- char *desc; /* description of manpage */
- int form; /* 0 == catpage */
-};
-
-struct type {
- uint64_t bits;
- const char *name;
-};
-
-static const struct type types[] = {
- { TYPE_An, "An" },
- { TYPE_Ar, "Ar" },
- { TYPE_At, "At" },
- { TYPE_Bsx, "Bsx" },
- { TYPE_Bx, "Bx" },
- { TYPE_Cd, "Cd" },
- { TYPE_Cm, "Cm" },
- { TYPE_Dv, "Dv" },
- { TYPE_Dx, "Dx" },
- { TYPE_Em, "Em" },
- { TYPE_Er, "Er" },
- { TYPE_Ev, "Ev" },
- { TYPE_Fa, "Fa" },
- { TYPE_Fl, "Fl" },
- { TYPE_Fn, "Fn" },
- { TYPE_Fn, "Fo" },
- { TYPE_Ft, "Ft" },
- { TYPE_Fx, "Fx" },
- { TYPE_Ic, "Ic" },
- { TYPE_In, "In" },
- { TYPE_Lb, "Lb" },
- { TYPE_Li, "Li" },
- { TYPE_Lk, "Lk" },
- { TYPE_Ms, "Ms" },
- { TYPE_Mt, "Mt" },
- { TYPE_Nd, "Nd" },
- { TYPE_Nm, "Nm" },
- { TYPE_Nx, "Nx" },
- { TYPE_Ox, "Ox" },
- { TYPE_Pa, "Pa" },
- { TYPE_Rs, "Rs" },
- { TYPE_Sh, "Sh" },
- { TYPE_Ss, "Ss" },
- { TYPE_St, "St" },
- { TYPE_Sy, "Sy" },
- { TYPE_Tn, "Tn" },
- { TYPE_Va, "Va" },
- { TYPE_Va, "Vt" },
- { TYPE_Xr, "Xr" },
- { ~0ULL, "any" },
- { 0ULL, NULL }
+ 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(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 void hash_free(void *, void *);
+static void *hash_calloc(size_t, size_t, void *);
+static struct expr *exprcomp(const struct mansearch *,
int, char *[]);
static void exprfree(struct expr *);
-static struct expr *exprterm(const struct mansearch *, char *);
-static char *sql_statement(const struct expr *,
- 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,
+ int argc, sqlite3_value **argv);
+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) {
+ fprintf(stderr, "pagecache already enabled\n");
+ 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) {
+ perror("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;
+
+ fprintf(stderr, "pagecache: %s\n", sqlite3_errstr(c));
+
+ } else if (NULL == pagecache) {
+ fprintf(stderr, "pagecache missing\n");
+ return (int)MANDOCLEVEL_BADARG;
+ }
+
+ if (-1 == munmap(pagecache, PC_PAGESIZE * PC_NUMPAGES)) {
+ perror("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 struct manpaths *paths,
+ int argc, char *argv[],
struct manpage **res, size_t *sz)
{
- int fd, rc, c;
- int64_t id;
+ int64_t pageid;
+ uint64_t outbit, iterbit;
char buf[PATH_MAX];
char *sql;
+ struct manpage *mpage;
struct expr *e, *ep;
sqlite3 *db;
- sqlite3_stmt *s;
+ 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.calloc = hash_calloc;
info.alloc = hash_alloc;
- info.hfree = hash_free;
- info.key_offset = offsetof(struct match, id);
+ info.free = hash_free;
+ info.key_offset = offsetof(struct match, pageid);
- *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;
+ if (NULL != search->outkey) {
+ outbit = TYPE_Nd;
+ for (indexbit = 0, iterbit = 1;
+ indexbit < mansearch_keymax;
+ indexbit++, iterbit <<= 1) {
+ 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, search->arch, search->sec);
+ sql = sql_statement(e);
/*
* Loop over the directories (containing databases) for us to
* 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])) {
+ if (chdir_status && paths->paths[i][0] != '/') {
+ if ( ! getcwd_status) {
+ fprintf(stderr, "%s: getcwd: %s\n",
+ paths->paths[i], buf);
+ continue;
+ } else if (chdir(buf) == -1) {
+ perror(buf);
+ continue;
+ }
+ }
+ if (chdir(paths->paths[i]) == -1) {
perror(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);
+ fprintf(stderr, "%s/%s: %s\n",
+ paths->paths[i], MANDOC_DB, strerror(errno));
sqlite3_close(db);
continue;
}
+ /*
+ * Define the SQL functions for substring
+ * and regular expression matching.
+ */
+
+ c = sqlite3_create_function(db, "match", 2,
+ SQLITE_UTF8 | SQLITE_DETERMINISTIC,
+ NULL, sql_match, NULL, NULL);
+ assert(SQLITE_OK == c);
+ c = sqlite3_create_function(db, "regexp", 2,
+ 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));
- if (NULL != search->arch)
- SQL_BIND_TEXT(db, s, j, search->arch);
- if (NULL != search->sec)
- SQL_BIND_TEXT(db, s, j, search->sec);
-
for (ep = e; NULL != ep; ep = ep->next) {
- SQL_BIND_TEXT(db, s, j, ep->v);
- SQL_BIND_INT64(db, s, j, ep->bits);
+ if (NULL == ep->substr) {
+ SQL_BIND_BLOB(db, s, j, ep->regexp);
+ } else
+ SQL_BIND_TEXT(db, s, j, ep->substr);
+ if (0 == ((TYPE_Nd | TYPE_Nm) & ep->bits))
+ SQL_BIND_INT64(db, s, j, ep->bits);
}
memset(&htab, 0, sizeof(struct ohash));
* distribution of buckets in the table.
*/
while (SQLITE_ROW == (c = sqlite3_step(s))) {
- id = sqlite3_column_int64(s, 0);
- 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->file = mandoc_strdup
- ((char *)sqlite3_column_text(s, 3));
- mp->desc = mandoc_strdup
- ((char *)sqlite3_column_text(s, 4));
- mp->form = sqlite3_column_int(s, 5);
+ 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);
}
fprintf(stderr, "%s\n", sqlite3_errmsg(db));
sqlite3_finalize(s);
- sqlite3_close(db);
+
+ 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));
+
+ c = sqlite3_prepare_v2(db,
+ "SELECT bits, key, pageid FROM keys "
+ "WHERE pageid=? AND bits & ?",
+ -1, &s2, NULL);
+ if (SQLITE_OK != c)
+ fprintf(stderr, "%s\n", 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(search, mpage, db, s, mp->pageid,
+ paths->paths[i], mp->form);
+ if (mpage->names != NULL) {
+ mpage->output = TYPE_Nd & outbit ?
+ mp->desc : outbit ?
+ buildoutput(db, s2, mp->pageid, outbit) :
+ NULL;
+ cur++;
}
- strlcpy((*res)[cur].file,
- paths->paths[i], PATH_MAX);
- strlcat((*res)[cur].file, "/", PATH_MAX);
- strlcat((*res)[cur].file, mp->file, PATH_MAX);
- (*res)[cur].desc = mp->desc;
- (*res)[cur].form = mp->form;
- free(mp->file);
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)
+ perror(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(const struct mansearch *search, struct manpage *mpage,
+ sqlite3 *db, sqlite3_stmt *s,
+ uint64_t pageid, const char *path, int form)
+{
+ glob_t globinfo;
+ char *firstname, *newnames, *prevsec, *prevarch;
+ const char *oldnames, *sep1, *name, *sec, *sep2, *arch, *fsec;
+ size_t i;
+ int c, globres;
+
+ mpage->file = NULL;
+ mpage->names = NULL;
+ firstname = prevsec = prevarch = NULL;
+ i = 1;
+ SQL_BIND_INT64(db, s, i, pageid);
+ while (SQLITE_ROW == (c = sqlite3_step(s))) {
+
+ /* Decide whether we already have some names. */
+
+ if (NULL == mpage->names) {
+ oldnames = "";
+ sep1 = "";
+ } else {
+ oldnames = mpage->names;
+ sep1 = ", ";
+ }
+
+ /* Fetch the next name, rejecting sec/arch mismatches. */
+
+ 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 &&
+ (strcmp(sec, prevsec) ||
+ strcmp(arch, prevarch))) {
+ sep2 = '\0' == *prevarch ? "" : "/";
+ mandoc_asprintf(&newnames, "%s(%s%s%s)",
+ oldnames, prevsec, sep2, prevarch);
+ free(mpage->names);
+ oldnames = mpage->names = newnames;
+ free(prevsec);
+ free(prevarch);
+ prevsec = prevarch = NULL;
+ }
+
+ /* Save the new section, to append it later. */
+
+ if (NULL == prevsec) {
+ prevsec = mandoc_strdup(sec);
+ prevarch = mandoc_strdup(arch);
+ }
+
+ /* Append the new name. */
+
+ mandoc_asprintf(&newnames, "%s%s%s",
+ oldnames, sep1, name);
+ free(mpage->names);
+ mpage->names = newnames;
+
+ /* Also save the first file name encountered. */
+
+ if (mpage->file != NULL)
+ continue;
+
+ if (form & FORM_SRC) {
+ sep1 = "man";
+ fsec = sec;
+ } else {
+ sep1 = "cat";
+ fsec = "0";
+ }
+ 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 (c != SQLITE_DONE)
+ fprintf(stderr, "%s\n", 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 (prevsec != NULL) {
+ sep2 = *prevarch == '\0' ? "" : "/";
+ mandoc_asprintf(&newnames, "%s(%s%s%s)",
+ mpage->names, prevsec, sep2, prevarch);
+ free(mpage->names);
+ mpage->names = newnames;
+ free(prevsec);
+ free(prevarch);
+ }
+}
+
+static char *
+buildoutput(sqlite3 *db, sqlite3_stmt *s, uint64_t pageid, uint64_t outbit)
+{
+ char *output, *newoutput;
+ const char *oldoutput, *sep1, *data;
+ size_t i;
+ int c;
+
+ output = NULL;
+ i = 1;
+ SQL_BIND_INT64(db, s, i, pageid);
+ SQL_BIND_INT64(db, s, i, outbit);
+ while (SQLITE_ROW == (c = sqlite3_step(s))) {
+ if (NULL == output) {
+ oldoutput = "";
+ sep1 = "";
+ } else {
+ oldoutput = output;
+ sep1 = " # ";
+ }
+ 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));
+ sqlite3_reset(s);
+ return output;
+}
+
+/*
+ * Implement substring match as an application-defined SQL function.
+ * Using the SQL LIKE or GLOB operators instead would be a bad idea
+ * because that would require escaping metacharacters in the string
+ * being searched for.
+ */
+static void
+sql_match(sqlite3_context *context, int argc, sqlite3_value **argv)
+{
+
+ assert(2 == argc);
+ sqlite3_result_int(context, NULL != strcasestr(
+ (const char *)sqlite3_value_text(argv[1]),
+ (const char *)sqlite3_value_text(argv[0])));
+}
+
+/*
+ * Implement regular expression match
+ * as an application-defined SQL function.
+ */
+static void
+sql_regexp(sqlite3_context *context, int argc, sqlite3_value **argv)
+{
+
+ assert(2 == argc);
+ sqlite3_result_int(context, !regexec(
+ (regex_t *)sqlite3_value_blob(argv[0]),
+ (const char *)sqlite3_value_text(argv[1]),
+ 0, NULL, 0));
+}
+
+static void
+sql_append(char **sql, size_t *sz, const char *newstr, int count)
+{
+ size_t newsz;
+
+ newsz = 1 < count ? (size_t)count : strlen(newstr);
+ *sql = mandoc_realloc(*sql, *sz + newsz + 1);
+ if (1 < count)
+ memset(*sql + *sz, *newstr, (size_t)count);
+ else
+ memcpy(*sql + *sz, newstr, newsz);
+ *sz += newsz;
+ (*sql)[*sz] = '\0';
}
/*
* Prepare the search SQL statement.
- * We search for any of the words specified in our match expression.
- * We filter the per-doc AND expressions when collecting results.
*/
static char *
-sql_statement(const struct expr *e, const char *arch, const char *sec)
+sql_statement(const struct expr *e)
{
char *sql;
- const char *glob = "(key GLOB ? AND bits & ?)";
- const char *eq = "(key = ? AND bits & ?)";
- const char *andarch = "arch = ? AND ";
- const char *andsec = "sec = ? AND ";
- size_t globsz;
- size_t eqsz;
size_t sz;
+ int needop;
- sql = mandoc_strdup
- ("SELECT docid,bits,key,file,desc,form,sec,arch "
- "FROM keys "
- "INNER JOIN docs ON docs.id=keys.docid "
- "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);
- globsz = strlen(glob);
- eqsz = strlen(eq);
-
- if (NULL != arch) {
- sz += strlen(andarch) + 1;
- sql = mandoc_realloc(sql, sz);
- strlcat(sql, andarch, sz);
- }
- if (NULL != sec) {
- sz += strlen(andsec) + 1;
- sql = mandoc_realloc(sql, sz);
- strlcat(sql, andsec, sz);
+ for (needop = 0; NULL != e; e = e->next) {
+ if (e->and)
+ sql_append(&sql, &sz, " AND ", 1);
+ else if (needop)
+ sql_append(&sql, &sz, " OR ", 1);
+ if (e->open)
+ sql_append(&sql, &sz, "(", e->open);
+ 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;
}
- sz += 2;
- sql = mandoc_realloc(sql, sz);
- strlcat(sql, "(", sz);
-
- for ( ; NULL != e; e = e->next) {
- sz += (e->glob ? globsz : eqsz) +
- (NULL == e->next ? 3 : 5);
- sql = mandoc_realloc(sql, sz);
- strlcat(sql, e->glob ? glob : eq, sz);
- strlcat(sql, NULL == e->next ? ");" : " OR ", sz);
- }
-
- return(sql);
+ return sql;
}
/*
static struct expr *
exprcomp(const struct mansearch *search, int argc, char *argv[])
{
- int i;
- struct expr *first, *next, *cur;
+ uint64_t mask;
+ int i, toopen, logic, igncase, toclose;
+ struct expr *first, *prev, *cur, *next;
first = cur = NULL;
+ logic = igncase = toopen = toclose = 0;
for (i = 0; i < argc; i++) {
- next = exprterm(search, argv[i]);
- if (NULL == next) {
- exprfree(first);
- return(NULL);
+ if (0 == strcmp("(", argv[i])) {
+ if (igncase)
+ goto fail;
+ toopen++;
+ toclose++;
+ continue;
+ } else if (0 == strcmp(")", argv[i])) {
+ if (toopen || logic || igncase || NULL == cur)
+ goto fail;
+ cur->close++;
+ if (0 > --toclose)
+ goto fail;
+ continue;
+ } else if (0 == strcmp("-a", argv[i])) {
+ if (toopen || logic || igncase || NULL == cur)
+ goto fail;
+ logic = 1;
+ continue;
+ } else if (0 == strcmp("-o", argv[i])) {
+ if (toopen || logic || igncase || NULL == cur)
+ goto fail;
+ logic = 2;
+ continue;
+ } else if (0 == strcmp("-i", argv[i])) {
+ if (igncase)
+ goto fail;
+ igncase = 1;
+ continue;
}
- if (NULL != first) {
+ next = exprterm(search, argv[i], !igncase);
+ if (NULL == next)
+ goto fail;
+ if (NULL == first)
+ first = next;
+ else
cur->next = next;
- cur = next;
- } else
- cur = first = next;
+ prev = cur = next;
+
+ /*
+ * Searching for descriptions must be split out
+ * because they are stored in the mpages table,
+ * not in the keys table.
+ */
+
+ 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;
- return(first);
+fail:
+ if (NULL != first)
+ exprfree(first);
+ return NULL;
}
static struct expr *
-exprterm(const struct mansearch *search, char *buf)
+exprterm(const struct mansearch *search, char *buf, int cs)
{
+ char errbuf[BUFSIZ];
struct expr *e;
- char *key, *v;
- size_t i;
+ 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) {
- e->v = buf;
- e->bits = search->deftype;
- return(e);
+ if (search->argmode == ARG_NAME) {
+ e->bits = TYPE_Nm;
+ e->substr = buf;
+ 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, "=~"))) {
- e->v = buf;
- e->bits = search->deftype;
- return(e);
- } else if (v == buf)
- e->bits = search->deftype;
+ if (search->argmode == ARG_WORD) {
+ e->bits = TYPE_Nm;
+ e->substr = NULL;
+ mandoc_asprintf(&val, "[[:<:]]%s[[:>:]]", buf);
+ cs = 0;
+ } else if ((val = strpbrk(buf, "=~")) == NULL) {
+ e->bits = TYPE_Nm | TYPE_Nd;
+ e->substr = buf;
+ } 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;
+ }
+
+ /* 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);
+ free(e);
+ return NULL;
+ }
+ }
- e->glob = '~' == *v;
- *v++ = '\0';
- e->v = v;
+ if (e->bits)
+ return e;
/*
* Parse out all possible fields.
while (NULL != (key = strsep(&buf, ","))) {
if ('\0' == *key)
continue;
- i = 0;
- while (types[i].bits &&
- strcasecmp(types[i].name, key))
- i++;
- if (0 == types[i].bits) {
- free(e);
- return(NULL);
+ for (i = 0, iterbit = 1;
+ i < mansearch_keymax;
+ i++, iterbit <<= 1) {
+ if (0 == strcasecmp(key,
+ mansearch_keynames[i])) {
+ e->bits |= iterbit;
+ break;
+ }
+ }
+ if (i == mansearch_keymax) {
+ if (strcasecmp(key, "any")) {
+ free(e);
+ return NULL;
+ }
+ e->bits |= ~0ULL;
}
- e->bits |= types[i].bits;
}
- return(e);
+ return e;
}
static void
}
static void *
-hash_halloc(size_t sz, void *arg)
+hash_calloc(size_t nmemb, size_t sz, void *arg)
{
- return(mandoc_calloc(sz, 1));
+ return mandoc_calloc(nmemb, sz);
}
static void *
hash_alloc(size_t sz, void *arg)
{
- return(mandoc_malloc(sz));
+ return mandoc_malloc(sz);
}
static void
-hash_free(void *p, size_t sz, void *arg)
+hash_free(void *p, void *arg)
{
free(p);
git.ckatri.com / mandoc.git / blobdiff