--- /dev/null
+<?php defined('SYSPATH') OR die('No direct access allowed.');
+/*
+ * Class: Database_PdoSqlite_Driver
+ * Provides specific database items for Sqlite.
+ *
+ * Connection string should be, eg: "pdosqlite://path/to/database.db"
+ *
+ * Version 1.0 alpha
+ * author - Doutu, updated by gregmac
+ * copyright - (c) BSD
+ * license - <no>
+ */
+
+class Database_Pdosqlite_Driver extends Database_Driver {
+
+ // Database connection link
+ protected $link;
+ protected $db_config;
+
+ /*
+ * Constructor: __construct
+ * Sets up the config for the class.
+ *
+ * Parameters:
+ * config - database configuration
+ *
+ */
+ public function __construct($config)
+ {
+ $this->db_config = $config;
+
+ Kohana::log('debug', 'PDO:Sqlite Database Driver Initialized');
+ }
+
+ public function connect()
+ {
+ // Import the connect variables
+ extract($this->db_config['connection']);
+
+ try
+ {
+ $this->link = new PDO('sqlite:'.$socket.$database, $user, $pass,
+ array(PDO::ATTR_PERSISTENT => $this->db_config['persistent']));
+
+ $this->link->setAttribute(PDO::ATTR_CASE, PDO::CASE_NATURAL);
+ //$this->link->query('PRAGMA count_changes=1;');
+
+ if ($charset = $this->db_config['character_set'])
+ {
+ $this->set_charset($charset);
+ }
+ }
+ catch (PDOException $e)
+ {
+ throw new Kohana_Database_Exception('database.error', $e->getMessage());
+ }
+
+ // Clear password after successful connect
+ $this->db_config['connection']['pass'] = NULL;
+
+ return $this->link;
+ }
+
+ public function query($sql)
+ {
+ try
+ {
+ $sth = $this->link->prepare($sql);
+ }
+ catch (PDOException $e)
+ {
+ throw new Kohana_Database_Exception('database.error', $e->getMessage());
+ }
+ return new Pdosqlite_Result($sth, $this->link, $this->db_config['object'], $sql);
+ }
+
+ public function set_charset($charset)
+ {
+ $this->link->query('PRAGMA encoding = '.$this->escape_str($charset));
+ }
+
+ public function escape_table($table)
+ {
+ if ( ! $this->db_config['escape'])
+ return $table;
+
+ return '`'.str_replace('.', '`.`', $table).'`';
+ }
+
+ public function escape_column($column)
+ {
+ if ( ! $this->db_config['escape'])
+ return $column;
+
+ if ($column == '*')
+ return $column;
+
+ // This matches any functions we support to SELECT.
+ if ( preg_match('/(avg|count|sum|max|min)\(\s*(.*)\s*\)(\s*as\s*(.+)?)?/i', $column, $matches))
+ {
+ if ( count($matches) == 3)
+ {
+ return $matches[1].'('.$this->escape_column($matches[2]).')';
+ }
+ else if ( count($matches) == 5)
+ {
+ return $matches[1].'('.$this->escape_column($matches[2]).') AS '.$this->escape_column($matches[2]);
+ }
+ }
+
+ // This matches any modifiers we support to SELECT.
+ if ( ! preg_match('/\b(?:rand|all|distinct(?:row)?|high_priority|sql_(?:small_result|b(?:ig_result|uffer_result)|no_cache|ca(?:che|lc_found_rows)))\s/i', $column))
+ {
+ if (stripos($column, ' AS ') !== FALSE)
+ {
+ // Force 'AS' to uppercase
+ $column = str_ireplace(' AS ', ' AS ', $column);
+
+ // Runs escape_column on both sides of an AS statement
+ $column = array_map(array($this, __FUNCTION__), explode(' AS ', $column));
+
+ // Re-create the AS statement
+ return implode(' AS ', $column);
+ }
+
+ return preg_replace('/[^.*]+/', '`$0`', $column);
+ }
+
+ $parts = explode(' ', $column);
+ $column = '';
+
+ for ($i = 0, $c = count($parts); $i < $c; $i++)
+ {
+ // The column is always last
+ if ($i == ($c - 1))
+ {
+ $column .= preg_replace('/[^.*]+/', '`$0`', $parts[$i]);
+ }
+ else // otherwise, it's a modifier
+ {
+ $column .= $parts[$i].' ';
+ }
+ }
+ return $column;
+ }
+
+ public function limit($limit, $offset = 0)
+ {
+ return 'LIMIT '.$offset.', '.$limit;
+ }
+
+ public function compile_select($database)
+ {
+ $sql = ($database['distinct'] == TRUE) ? 'SELECT DISTINCT ' : 'SELECT ';
+ $sql .= (count($database['select']) > 0) ? implode(', ', $database['select']) : '*';
+
+ if (count($database['from']) > 0)
+ {
+ $sql .= "\nFROM ";
+ $sql .= implode(', ', $database['from']);
+ }
+
+ if (count($database['join']) > 0)
+ {
+ foreach($database['join'] AS $join)
+ {
+ $sql .= "\n".$join['type'].'JOIN '.implode(', ', $join['tables']).' ON '.$join['conditions'];
+ }
+ }
+
+ if (count($database['where']) > 0)
+ {
+ $sql .= "\nWHERE ";
+ }
+
+ $sql .= implode("\n", $database['where']);
+
+ if (count($database['groupby']) > 0)
+ {
+ $sql .= "\nGROUP BY ";
+ $sql .= implode(', ', $database['groupby']);
+ }
+
+ if (count($database['having']) > 0)
+ {
+ $sql .= "\nHAVING ";
+ $sql .= implode("\n", $database['having']);
+ }
+
+ if (count($database['orderby']) > 0)
+ {
+ $sql .= "\nORDER BY ";
+ $sql .= implode(', ', $database['orderby']);
+ }
+
+ if (is_numeric($database['limit']))
+ {
+ $sql .= "\n";
+ $sql .= $this->limit($database['limit'], $database['offset']);
+ }
+
+ return $sql;
+ }
+
+ public function escape_str($str)
+ {
+ if ( ! $this->db_config['escape'])
+ return $str;
+
+ if (function_exists('sqlite_escape_string'))
+ {
+ $res = sqlite_escape_string($str);
+ }
+ else
+ {
+ $res = str_replace("'", "''", $str);
+ }
+ return $res;
+ }
+
+ public function list_tables()
+ {
+ $sql = "SELECT `name` FROM `sqlite_master` WHERE `type`='table' ORDER BY `name`;";
+ try
+ {
+ $result = $this->query($sql)->result(FALSE, PDO::FETCH_ASSOC);
+ $tables = array();
+ foreach ($result as $row)
+ {
+ $tables[] = current($row);
+ }
+ }
+ catch (PDOException $e)
+ {
+ throw new Kohana_Database_Exception('database.error', $e->getMessage());
+ }
+ return $tables;
+ }
+
+ public function show_error()
+ {
+ $err = $this->link->errorInfo();
+ return isset($err[2]) ? $err[2] : 'Unknown error!';
+ }
+
+ public function list_fields($table, $query = FALSE)
+ {
+ static $tables;
+ if (is_object($query))
+ {
+ if (empty($tables[$table]))
+ {
+ $tables[$table] = array();
+
+ foreach ($query->result() as $row)
+ {
+ $tables[$table][] = $row->name;
+ }
+ }
+
+ return $tables[$table];
+ }
+ else
+ {
+ $result = $this->link->query( 'PRAGMA table_info('.$this->escape_table($table).')' );
+
+ foreach ($result as $row)
+ {
+ $tables[$table][$row['name']] = $this->sql_type($row['type']);
+ }
+
+ return $tables[$table];
+ }
+ }
+
+ public function field_data($table)
+ {
+ Kohana::log('error', 'This method is under developing');
+ }
+ /**
+ * Version number query string
+ *
+ * @access public
+ * @return string
+ */
+ function version()
+ {
+ return $this->link->getAttribute(constant("PDO::ATTR_SERVER_VERSION"));
+ }
+
+} // End Database_PdoSqlite_Driver Class
+
+/*
+ * PDO-sqlite Result
+ */
+class Pdosqlite_Result extends Database_Result {
+
+ // Data fetching types
+ protected $fetch_type = PDO::FETCH_OBJ;
+ protected $return_type = PDO::FETCH_ASSOC;
+
+ /**
+ * Sets up the result variables.
+ *
+ * @param resource query result
+ * @param resource database link
+ * @param boolean return objects or arrays
+ * @param string SQL query that was run
+ */
+ public function __construct($result, $link, $object = TRUE, $sql)
+ {
+ if (is_object($result) OR $result = $link->prepare($sql))
+ {
+ // run the query. Return true if success, false otherwise
+ if( ! $result->execute())
+ {
+ // Throw Kohana Exception with error message. See PDOStatement errorInfo() method
+ $arr_infos = $result->errorInfo();
+ throw new Kohana_Database_Exception('database.error', $arr_infos[2]);
+ }
+
+ if (preg_match('/^SELECT|PRAGMA|EXPLAIN/i', $sql))
+ {
+ $this->result = $result;
+ $this->current_row = 0;
+
+ $this->total_rows = $this->sqlite_row_count();
+
+ $this->fetch_type = ($object === TRUE) ? PDO::FETCH_OBJ : PDO::FETCH_ASSOC;
+ }
+ elseif (preg_match('/^DELETE|INSERT|UPDATE/i', $sql))
+ {
+ $this->insert_id = $link->lastInsertId();
+
+ $this->total_rows = $result->rowCount();
+ }
+ }
+ else
+ {
+ // SQL error
+ throw new Kohana_Database_Exception('database.error', $link->errorInfo().' - '.$sql);
+ }
+
+ // Set result type
+ $this->result($object);
+
+ // Store the SQL
+ $this->sql = $sql;
+ }
+
+ private function sqlite_row_count()
+ {
+ $count = 0;
+ while ($this->result->fetch())
+ {
+ $count++;
+ }
+
+ // The query must be re-fetched now.
+ $this->result->execute();
+
+ return $count;
+ }
+
+ /*
+ * Destructor: __destruct
+ * Magic __destruct function, frees the result.
+ */
+ public function __destruct()
+ {
+ if (is_object($this->result))
+ {
+ $this->result->closeCursor();
+ $this->result = NULL;
+ }
+ }
+
+ public function result($object = TRUE, $type = PDO::FETCH_BOTH)
+ {
+ $this->fetch_type = (bool) $object ? PDO::FETCH_OBJ : PDO::FETCH_BOTH;
+
+ if ($this->fetch_type == PDO::FETCH_OBJ)
+ {
+ $this->return_type = (is_string($type) AND Kohana::auto_load($type)) ? $type : 'stdClass';
+ }
+ else
+ {
+ $this->return_type = $type;
+ }
+
+ return $this;
+ }
+
+ public function as_array($object = NULL, $type = PDO::FETCH_ASSOC)
+ {
+ return $this->result_array($object, $type);
+ }
+
+ public function result_array($object = NULL, $type = PDO::FETCH_ASSOC)
+ {
+ $rows = array();
+
+ if (is_string($object))
+ {
+ $fetch = $object;
+ }
+ elseif (is_bool($object))
+ {
+ if ($object === TRUE)
+ {
+ $fetch = PDO::FETCH_OBJ;
+
+ // NOTE - The class set by $type must be defined before fetching the result,
+ // autoloading is disabled to save a lot of stupid overhead.
+ $type = (is_string($type) AND Kohana::auto_load($type)) ? $type : 'stdClass';
+ }
+ else
+ {
+ $fetch = PDO::FETCH_OBJ;
+ }
+ }
+ else
+ {
+ // Use the default config values
+ $fetch = $this->fetch_type;
+
+ if ($fetch == PDO::FETCH_OBJ)
+ {
+ $type = (is_string($type) AND Kohana::auto_load($type)) ? $type : 'stdClass';
+ }
+ }
+ try
+ {
+ while ($row = $this->result->fetch($fetch))
+ {
+ $rows[] = $row;
+ }
+ }
+ catch(PDOException $e)
+ {
+ throw new Kohana_Database_Exception('database.error', $e->getMessage());
+ return FALSE;
+ }
+ return $rows;
+ }
+
+ public function list_fields()
+ {
+ $field_names = array();
+ for ($i = 0, $max = $this->result->columnCount(); $i < $max; $i++)
+ {
+ $info = $this->result->getColumnMeta($i);
+ $field_names[] = $info['name'];
+ }
+ return $field_names;
+ }
+
+ public function seek($offset)
+ {
+ // To request a scrollable cursor for your PDOStatement object, you must
+ // set the PDO::ATTR_CURSOR attribute to PDO::CURSOR_SCROLL when you
+ // prepare the statement.
+ Kohana::log('error', get_class($this).' does not support scrollable cursors, '.__FUNCTION__.' call ignored');
+
+ return FALSE;
+ }
+
+ public function offsetGet($offset)
+ {
+ try
+ {
+ return $this->result->fetch($this->fetch_type, PDO::FETCH_ORI_ABS, $offset);
+ }
+ catch(PDOException $e)
+ {
+ throw new Kohana_Database_Exception('database.error', $e->getMessage());
+ }
+ }
+
+ public function rewind()
+ {
+ // Same problem that seek() has, see above.
+ return $this->seek(0);
+ }
+
+} // End PdoSqlite_Result Class
\ No newline at end of file
projects / speedfreak / blobdiff