aboutsummaryrefslogtreecommitdiff
path: root/src/SemanticScuttle/db/sqlite.php
blob: 64d437178a9a81a2c70a49897b37c5dd4aaded2e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
<?php
/** 
*
* @package dbal_sqlite
* @version $Id: sqlite.php,v 1.2 2005/06/10 08:52:03 devalley Exp $
* @copyright (c) 2005 phpBB Group 
* @license http://opensource.org/licenses/gpl-license.php GNU Public License 
*
*/

/**
* @ignore
*/
if (!defined("SQL_LAYER"))
{

define("SQL_LAYER","sqlite");

/**
* @package dbal_sqlite
* Sqlite Database Abstraction Layer
*/
class sql_db
{
	var $db_connect_id;
	var $query_result;
	var $return_on_error = false;
	var $transaction = false;
	var $sql_report = '';
	var $sql_time = 0;
	var $num_queries = 0;
	var $open_queries = array();

	function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port, $persistency = false)
	{
		$this->persistency = $persistency;
		$this->user = $sqluser;
		$this->server = $sqlserver . (($port) ? ':' . $port : '');
		$this->dbname = $database;

		$this->db_connect_id = ($this->persistency) ? @sqlite_popen($this->server, 0, $error) : @sqlite_open($this->server, 0, $error);

		return ($this->db_connect_id) ? true : $error;
	}

	// Other base methods
	function sql_close()
	{
		if (!$this->db_connect_id)
		{
			return false;
		}

		return @sqlite_close($this->db_connect_id);
	}

	function sql_return_on_error($fail = false)
	{
		$this->return_on_error = $fail;
	}

	function sql_num_queries()
	{
		return $this->num_queries;
	}

	function sql_transaction($status = 'begin')
	{
		switch ($status)
		{
			case 'begin':
				$this->transaction = true;
				$result = @sqlite_query('BEGIN', $this->db_connect_id);
				break;

			case 'commit':
				$this->transaction = false;
				$result = @sqlite_query('COMMIT', $this->db_connect_id);
				break;

			case 'rollback':
				$this->transaction = false;
				$result = @sqlite_query('ROLLBACK', $this->db_connect_id);
				break;

			default:
				$result = true;
		}

		return $result;
	}

	// Base query method
	function sql_query($query = '', $expire_time = 0)
	{
		if ($query != '')
		{
			global $cache;

			$query = preg_replace('#FROM \((.*?)\)(,|[\n\t ]+?WHERE) #s', 'FROM \1\2 ', $query);

			if (!$expire_time || !$cache->sql_load($query, $expire_time))
			{
				if ($expire_time)
				{
					$cache_result = true;
				}

				$this->query_result = false;
				$this->num_queries++;

				if (!empty($_GET['explain']))
				{
					global $starttime;

					$curtime = explode(' ', microtime());
					$curtime = $curtime[0] + $curtime[1] - $starttime;
				}

				if (!($this->query_result = @sqlite_query($query, $this->db_connect_id)))
				{
					$this->sql_error($query);
				}

				if (!empty($_GET['explain']))
				{
					$endtime = explode(' ', microtime());
					$endtime = $endtime[0] + $endtime[1] - $starttime;

					$this->sql_report .= "<pre>Query:\t" . htmlspecialchars(preg_replace('/[\s]*[\n\r\t]+[\n\r\s\t]*/', "\n\t", $query)) . "\n\n";

					if ($this->query_result)
					{
						$this->sql_report .= "Time before:  $curtime\nTime after:   $endtime\nElapsed time: <b>" . ($endtime - $curtime) . "</b>\n</pre>";
					}
					else
					{
						$error = $this->sql_error();
						$this->sql_report .= '<b>FAILED</b> - SQLite ' . $error['code'] . ': ' . htmlspecialchars($error['message']) . '<br><br><pre>';
					}

					$this->sql_time += $endtime - $curtime;

					if (preg_match('#^SELECT#', $query))
					{
						$html_table = FALSE;
						if ($result = @sqlite_query("EXPLAIN $query", $this->db_connect_id))
						{
							while ($row = @sqlite_fetch_array($result, @sqlite_ASSOC))
							{
								if (!$html_table && sizeof($row))
								{
									$html_table = TRUE;
									$this->sql_report .= "<table width=100% border=1 cellpadding=2 cellspacing=1>\n";
									$this->sql_report .= "<tr>\n<td><b>" . implode("</b></td>\n<td><b>", array_keys($row)) . "</b></td>\n</tr>\n";
								}
								$this->sql_report .= "<tr>\n<td>" . implode("&nbsp;</td>\n<td>", array_values($row)) . "&nbsp;</td>\n</tr>\n";
							}
						}

						if ($html_table)
						{
							$this->sql_report .= '</table><br>';
						}
					}

					$this->sql_report .= "<hr>\n";
				}

				if (preg_match('#^SELECT#', $query))
				{
					$this->open_queries[] = $this->query_result;
				}
			}

			if (!empty($cache_result))
			{
				$cache->sql_save($query, $this->query_result);
			}
		}
		else
		{
			return false;
		}

		return ($this->query_result) ? $this->query_result : false;
	}

	function sql_query_limit($query, $total, $offset = 0, $expire_time = 0)
	{
		if ($query != '')
		{
			$this->query_result = false;

			$query .= ' LIMIT ' . ((!empty($offset)) ? $total . ' OFFSET ' . $offset : $total);

			return $this->sql_query($query, $expire_time);
		}
		else
		{
			return false;
		}
	}

	// Idea for this from Ikonboard
	function sql_build_array($query, $assoc_ary = false)
	{
		if (!is_array($assoc_ary))
		{
			return false;
		}

		$fields = array();
		$values = array();
		if ($query == 'INSERT')
		{
			foreach ($assoc_ary as $key => $var)
			{
				$fields[] = $key;

				if (is_null($var))
				{
					$values[] = 'NULL';
				}
				elseif (is_string($var))
				{
					$values[] = "'" . $this->sql_escape($var) . "'";
				}
				else
				{
					$values[] = (is_bool($var)) ? intval($var) : $var;
				}
			}

			$query = ' (' . implode(', ', $fields) . ') VALUES (' . implode(', ', $values) . ')';
		}
		else if ($query == 'UPDATE')
		{
			$values = array();
			foreach ($assoc_ary as $key => $var)
			{
				if (is_null($var))
				{
					$values[] = "$key = NULL";
				}
				elseif (is_string($var))
				{
					$values[] = "$key = '" . $this->sql_escape($var) . "'";
				}
				else
				{
					$values[] = (is_bool($var)) ? "$key = " . intval($var) : "$key = $var";
				}
			}
			$query = implode(', ', $values);
		}

		return $query;
	}

	// Other query methods
	//
	// NOTE :: Want to remove _ALL_ reliance on sql_numrows from core code ...
	//         don't want this here by a middle Milestone
	function sql_numrows($query_id = false)
	{
		if (!$query_id)
		{
			$query_id = $this->query_result;
		}

		return ($query_id) ? @sqlite_num_rows($query_id) : false;
	}

	function sql_affectedrows()
	{
		return ($this->db_connect_id) ? @sqlite_changes($this->db_connect_id) : false;
	}

	function sql_fetchrow($query_id = 0)
	{
		global $cache;

		if (!$query_id)
		{
			$query_id = $this->query_result;
		}

		if ($cache->sql_exists($query_id))
		{
			return $cache->sql_fetchrow($query_id);
		}

		return ($query_id) ? @sqlite_fetch_array($query_id, @sqlite_ASSOC) : false;
	}

	function sql_fetchrowset($query_id = 0)
	{
		if (!$query_id)
		{
			$query_id = $this->query_result;
		}

		if ($query_id)
		{
			unset($this->rowset[$query_id]);
			unset($this->row[$query_id]);
			while ($this->rowset[$query_id] = @sqlite_fetch_array($query_id, @sqlite_ASSOC))
			{
				$result[] = $this->rowset[$query_id];
			}
			return $result;
		}
		else
		{
			return false;
		}
	}

	function sql_fetchfield($field, $rownum = -1, $query_id = 0)
	{
		if (!$query_id)
		{
			$query_id = $this->query_result;
		}

		if ($query_id)
		{
			return ($rownum > -1) ? ((@sqlite_seek($query_id, $rownum)) ? @sqlite_column($query_id, $field) : false) : @sqlite_column($query_id, $field);
		}
	}

	function sql_rowseek($rownum, $query_id = 0)
	{
		if (!$query_id)
		{
			$query_id = $this->query_result;
		}

		return ($query_id) ? @sqlite_seek($query_id, $rownum) : false;
	}

	function sql_nextid()
	{
		return ($this->db_connect_id) ? @sqlite_last_insert_rowid($this->db_connect_id) : false;
	}

	function sql_freeresult($query_id = false)
	{
		return true;
	}

	function sql_escape($msg)
	{
		return @sqlite_escape_string(stripslashes($msg));
	}

	function sql_error($sql = '')
	{
		if (!$this->return_on_error)
		{
			$this_page = (!empty($_SERVER['PHP_SELF'])) ? $_SERVER['PHP_SELF'] : $_ENV['PHP_SELF'];
			$this_page .= '&' . ((!empty($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : $_ENV['QUERY_STRING']);

			$message = '<u>SQL ERROR</u> [ ' . SQL_LAYER . ' ]<br /><br />' . @sqlite_error_string(@sqlite_last_error($this->db_connect_id)) . '<br /><br /><u>CALLING PAGE</u><br /><br />'  . htmlspecialchars($this_page) . (($sql != '') ? '<br /><br /><u>SQL</u><br /><br />' . $sql : '') . '<br />';

			if ($this->transaction)
			{
				$this->sql_transaction('rollback');
			}

			trigger_error($message, E_USER_ERROR);
		}

		$result = array(
			'message'	=> @sqlite_error_string(@sqlite_last_error($this->db_connect_id)),
			'code'		=> @sqlite_last_error($this->db_connect_id)
		);

		return $result;
	}

} // class sql_db

} // if ... define

?>