import of scuttle 0.7.2

git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@1 b3834d28-1941-0410-a4f8-b48e95affb8f

1 files changed, 387 insertions, 0 deletions

diff --git a/includes/db/sqlite.php b/includes/db/sqlite.php
new file mode 100644
index 0000000..1591396
--- /dev/null
+++ b/includes/db/sqlite.php
@@ -0,0 +1,387 @@
+<?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
+
+?>
\ No newline at end of file