version 1.6, 2013/06/05 02:00:26 |
version 1.7, 2013/10/19 20:43:13 |
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/* $Id$ */ |
/* $Id$ */ |
/* |
/* |
* Copyright (c) 2012 Kristaps Dzonsons <kristaps@bsd.lv> |
* Copyright (c) 2012 Kristaps Dzonsons <kristaps@bsd.lv> |
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* Copyright (c) 2013 Ingo Schwarze <schwarze@openbsd.org> |
* |
* |
* Permission to use, copy, modify, and distribute this software for any |
* Permission to use, copy, modify, and distribute this software for any |
* purpose with or without fee is hereby granted, provided that the above |
* purpose with or without fee is hereby granted, provided that the above |
Line 119 static struct expr *exprcomp(const struct mansearch *, |
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Line 120 static struct expr *exprcomp(const struct mansearch *, |
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int, char *[]); |
int, char *[]); |
static void exprfree(struct expr *); |
static void exprfree(struct expr *); |
static struct expr *exprterm(const struct mansearch *, char *); |
static struct expr *exprterm(const struct mansearch *, char *); |
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static void sql_match(sqlite3_context *context, |
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int argc, sqlite3_value **argv); |
static char *sql_statement(const struct expr *, |
static char *sql_statement(const struct expr *, |
const char *, const char *); |
const char *, const char *); |
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Line 205 mansearch(const struct mansearch *search, |
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Line 208 mansearch(const struct mansearch *search, |
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continue; |
continue; |
} |
} |
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/* Define the SQL function for substring matching. */ |
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c = sqlite3_create_function(db, "match", 2, |
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SQLITE_ANY, NULL, sql_match, NULL, NULL); |
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if (SQLITE_OK != c) { |
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fprintf(stderr, "%s\n", sqlite3_errmsg(db)); |
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break; |
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} |
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j = 1; |
j = 1; |
c = sqlite3_prepare_v2(db, sql, -1, &s, NULL); |
c = sqlite3_prepare_v2(db, sql, -1, &s, NULL); |
if (SQLITE_OK != c) |
if (SQLITE_OK != c) |
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} |
} |
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/* |
/* |
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* Implement substring match as an application-defined SQL function. |
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* Using the SQL LIKE or GLOB operators instead would be a bad idea |
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* because that would require escaping metacharacters in the string |
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* being searched for. |
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*/ |
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static void |
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sql_match(sqlite3_context *context, int argc, sqlite3_value **argv) |
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{ |
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assert(2 == argc); |
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sqlite3_result_int(context, NULL != strcasestr( |
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(const char *)sqlite3_value_text(argv[1]), |
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(const char *)sqlite3_value_text(argv[0]))); |
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} |
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/* |
* Prepare the search SQL statement. |
* Prepare the search SQL statement. |
* We search for any of the words specified in our match expression. |
* We search for any of the words specified in our match expression. |
* We filter the per-doc AND expressions when collecting results. |
* We filter the per-doc AND expressions when collecting results. |
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sql_statement(const struct expr *e, const char *arch, const char *sec) |
sql_statement(const struct expr *e, const char *arch, const char *sec) |
{ |
{ |
char *sql; |
char *sql; |
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const char *substr = "(key MATCH ? AND bits & ?)"; |
const char *glob = "(key GLOB ? AND bits & ?)"; |
const char *glob = "(key GLOB ? AND bits & ?)"; |
const char *eq = "(key = ? AND bits & ?)"; |
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const char *andarch = "arch = ? AND "; |
const char *andarch = "arch = ? AND "; |
const char *andsec = "sec = ? AND "; |
const char *andsec = "sec = ? AND "; |
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size_t substrsz; |
size_t globsz; |
size_t globsz; |
size_t eqsz; |
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size_t sz; |
size_t sz; |
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sql = mandoc_strdup |
sql = mandoc_strdup |
Line 309 sql_statement(const struct expr *e, const char *arch, |
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Line 337 sql_statement(const struct expr *e, const char *arch, |
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"INNER JOIN docs ON docs.id=keys.docid " |
"INNER JOIN docs ON docs.id=keys.docid " |
"WHERE "); |
"WHERE "); |
sz = strlen(sql); |
sz = strlen(sql); |
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substrsz = strlen(substr); |
globsz = strlen(glob); |
globsz = strlen(glob); |
eqsz = strlen(eq); |
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if (NULL != arch) { |
if (NULL != arch) { |
sz += strlen(andarch) + 1; |
sz += strlen(andarch) + 1; |
Line 329 sql_statement(const struct expr *e, const char *arch, |
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Line 357 sql_statement(const struct expr *e, const char *arch, |
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strlcat(sql, "(", sz); |
strlcat(sql, "(", sz); |
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for ( ; NULL != e; e = e->next) { |
for ( ; NULL != e; e = e->next) { |
sz += (e->glob ? globsz : eqsz) + |
sz += (e->glob ? globsz : substrsz) + |
(NULL == e->next ? 3 : 5); |
(NULL == e->next ? 3 : 5); |
sql = mandoc_realloc(sql, sz); |
sql = mandoc_realloc(sql, sz); |
strlcat(sql, e->glob ? glob : eq, sz); |
strlcat(sql, e->glob ? glob : substr, sz); |
strlcat(sql, NULL == e->next ? ");" : " OR ", sz); |
strlcat(sql, NULL == e->next ? ");" : " OR ", sz); |
} |
} |
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