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- <?php
- require_once 'common.php';
- class DB_sqlite extends DB_common
- {
-
-
- public $phptype = 'sqlite';
-
- public $dbsyntax = 'sqlite';
-
- public $features = array(
- 'limit' => 'alter',
- 'new_link' => false,
- 'numrows' => true,
- 'pconnect' => true,
- 'prepare' => false,
- 'ssl' => false,
- 'transactions' => false,
- );
-
- public $errorcode_map = array();
-
- public $connection;
-
- public $dsn = array();
-
- public $keywords = array(
- 'BLOB' => '',
- 'BOOLEAN' => '',
- 'CHARACTER' => '',
- 'CLOB' => '',
- 'FLOAT' => '',
- 'INTEGER' => '',
- 'KEY' => '',
- 'NATIONAL' => '',
- 'NUMERIC' => '',
- 'NVARCHAR' => '',
- 'PRIMARY' => '',
- 'TEXT' => '',
- 'TIMESTAMP' => '',
- 'UNIQUE' => '',
- 'VARCHAR' => '',
- 'VARYING' => '',
- );
-
- public $_lasterror = '';
-
-
-
- public function __construct()
- {
- parent::__construct();
- }
-
-
-
- public function connect($dsn, $persistent = false)
- {
- if (!PEAR::loadExtension('sqlite')) {
- return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
- }
- $this->dsn = $dsn;
- if ($dsn['dbsyntax']) {
- $this->dbsyntax = $dsn['dbsyntax'];
- }
- if (!$dsn['database']) {
- return $this->sqliteRaiseError(DB_ERROR_ACCESS_VIOLATION);
- }
- if ($dsn['database'] !== ':memory:') {
- if (!file_exists($dsn['database'])) {
- if (!touch($dsn['database'])) {
- return $this->sqliteRaiseError(DB_ERROR_NOT_FOUND);
- }
- if (!isset($dsn['mode']) ||
- !is_numeric($dsn['mode'])) {
- $mode = 0644;
- } else {
- $mode = octdec($dsn['mode']);
- }
- if (!chmod($dsn['database'], $mode)) {
- return $this->sqliteRaiseError(DB_ERROR_NOT_FOUND);
- }
- if (!file_exists($dsn['database'])) {
- return $this->sqliteRaiseError(DB_ERROR_NOT_FOUND);
- }
- }
- if (!is_file($dsn['database'])) {
- return $this->sqliteRaiseError(DB_ERROR_INVALID);
- }
- if (!is_readable($dsn['database'])) {
- return $this->sqliteRaiseError(DB_ERROR_ACCESS_VIOLATION);
- }
- }
- $connect_function = $persistent ? 'sqlite_popen' : 'sqlite_open';
-
- @ini_set('track_errors', 1);
- $php_errormsg = '';
- if (!$this->connection = @$connect_function($dsn['database'])) {
- return $this->raiseError(
- DB_ERROR_NODBSELECTED,
- null,
- null,
- null,
- $php_errormsg
- );
- }
- return DB_OK;
- }
-
-
-
- public function sqliteRaiseError($errno = null)
- {
- $native = $this->errorNative();
- if ($errno === null) {
- $errno = $this->errorCode($native);
- }
- $errorcode = @sqlite_last_error($this->connection);
- $userinfo = "$errorcode ** $this->last_query";
- return $this->raiseError($errno, null, null, $userinfo, $native);
- }
-
-
-
- public function errorNative()
- {
- return $this->_lasterror;
- }
-
-
-
- public function errorCode($errormsg)
- {
- static $error_regexps;
-
-
- $errormsg = preg_replace('/^sqlite[a-z_]+\(\): /', '', $errormsg);
- if (!isset($error_regexps)) {
- $error_regexps = array(
- '/^no such table:/' => DB_ERROR_NOSUCHTABLE,
- '/^no such index:/' => DB_ERROR_NOT_FOUND,
- '/^(table|index) .* already exists$/' => DB_ERROR_ALREADY_EXISTS,
- '/PRIMARY KEY must be unique/i' => DB_ERROR_CONSTRAINT,
- '/is not unique/' => DB_ERROR_CONSTRAINT,
- '/columns .* are not unique/i' => DB_ERROR_CONSTRAINT,
- '/uniqueness constraint failed/' => DB_ERROR_CONSTRAINT,
- '/may not be NULL/' => DB_ERROR_CONSTRAINT_NOT_NULL,
- '/^no such column:/' => DB_ERROR_NOSUCHFIELD,
- '/no column named/' => DB_ERROR_NOSUCHFIELD,
- '/column not present in both tables/i' => DB_ERROR_NOSUCHFIELD,
- '/^near ".*": syntax error$/' => DB_ERROR_SYNTAX,
- '/[0-9]+ values for [0-9]+ columns/i' => DB_ERROR_VALUE_COUNT_ON_ROW,
- );
- }
- foreach ($error_regexps as $regexp => $code) {
- if (preg_match($regexp, $errormsg)) {
- return $code;
- }
- }
-
- return DB_ERROR;
- }
-
-
-
- public function disconnect()
- {
- $ret = @sqlite_close($this->connection);
- $this->connection = null;
- return $ret;
- }
-
-
-
- public function simpleQuery($query)
- {
- $ismanip = $this->_checkManip($query);
- $this->last_query = $query;
- $query = $this->modifyQuery($query);
- $php_errormsg = '';
- $result = @sqlite_query($query, $this->connection);
- $this->_lasterror = $php_errormsg ? $php_errormsg : '';
- $this->result = $result;
- if (!$this->result) {
- return $this->sqliteRaiseError(null);
- }
-
-
- if (!$ismanip) {
- $numRows = $this->numRows($result);
- if (is_object($numRows)) {
-
- return $numRows;
- }
- return $result;
- }
- return DB_OK;
- }
-
-
-
- public function modifyQuery($query)
- {
- if ($this->options['portability'] & DB_PORTABILITY_DELETE_COUNT) {
- if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) {
- $query = preg_replace(
- '/^\s*DELETE\s+FROM\s+(\S+)\s*$/',
- 'DELETE FROM \1 WHERE 1=1',
- $query
- );
- }
- }
- return $query;
- }
-
-
-
- public function numRows($result)
- {
- $rows = @sqlite_num_rows($result);
- if ($rows === null) {
- return $this->sqliteRaiseError();
- }
- return $rows;
- }
-
-
-
- public function nextResult($result)
- {
- return false;
- }
-
-
-
- public function fetchInto($result, &$arr, $fetchmode, $rownum = null)
- {
- if ($rownum !== null) {
- if (!@sqlite_seek($this->result, $rownum)) {
- return null;
- }
- }
- if ($fetchmode & DB_FETCHMODE_ASSOC) {
- $arr = @sqlite_fetch_array($result, SQLITE_ASSOC);
- if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {
- $arr = array_change_key_case($arr, CASE_LOWER);
- }
-
- if (is_array($arr) && count($arr) > 0) {
- $strippedArr = array();
- foreach ($arr as $field => $value) {
- $strippedArr[trim($field, '"')] = $value;
- }
- $arr = $strippedArr;
- }
- } else {
- $arr = @sqlite_fetch_array($result, SQLITE_NUM);
- }
- if (!$arr) {
- return null;
- }
- if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
-
- $this->_rtrimArrayValues($arr);
- }
- if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {
- $this->_convertNullArrayValuesToEmpty($arr);
- }
- return DB_OK;
- }
-
- public function freeResult(&$result)
- {
-
- if (!is_resource($result)) {
- return false;
- }
- $result = null;
- return true;
- }
-
-
-
- public function numCols($result)
- {
- $cols = @sqlite_num_fields($result);
- if (!$cols) {
- return $this->sqliteRaiseError();
- }
- return $cols;
- }
-
-
-
- public function affectedRows()
- {
- return @sqlite_changes($this->connection);
- }
-
-
-
- public function dropSequence($seq_name)
- {
- return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name));
- }
-
-
-
- public function nextId($seq_name, $ondemand = true)
- {
- $seqname = $this->getSequenceName($seq_name);
- do {
- $repeat = 0;
- $this->pushErrorHandling(PEAR_ERROR_RETURN);
- $result = $this->query("INSERT INTO $seqname (id) VALUES (NULL)");
- $this->popErrorHandling();
- if ($result === DB_OK) {
- $id = @sqlite_last_insert_rowid($this->connection);
- if ($id != 0) {
- return $id;
- }
- } elseif ($ondemand && DB::isError($result) &&
- $result->getCode() == DB_ERROR_NOSUCHTABLE) {
- $result = $this->createSequence($seq_name);
- if (DB::isError($result)) {
- return $this->raiseError($result);
- } else {
- $repeat = 1;
- }
- }
- } while ($repeat);
- return $this->raiseError($result);
- }
-
-
-
- public function createSequence($seq_name)
- {
- $seqname = $this->getSequenceName($seq_name);
- $query = 'CREATE TABLE ' . $seqname .
- ' (id INTEGER UNSIGNED PRIMARY KEY) ';
- $result = $this->query($query);
- if (DB::isError($result)) {
- return ($result);
- }
- $query = "CREATE TRIGGER ${seqname}_cleanup AFTER INSERT ON $seqname
- BEGIN
- DELETE FROM $seqname WHERE id<LAST_INSERT_ROWID();
- END ";
- $result = $this->query($query);
-
- return ($result);
-
- }
-
-
-
- public function getDbFileStats($arg = '')
- {
- $stats = stat($this->dsn['database']);
- if ($stats == false) {
- return false;
- }
- if (is_array($stats)) {
- if (is_numeric($arg)) {
- if (((int)$arg <= 12) & ((int)$arg >= 0)) {
- return false;
- }
- return $stats[$arg];
- }
- if (array_key_exists(trim($arg), $stats)) {
- return $stats[$arg];
- }
- }
- return $stats;
- }
-
-
-
- public function escapeSimple($str)
- {
- return @sqlite_escape_string($str);
- }
-
-
-
- public function modifyLimitQuery($query, $from, $count, $params = array())
- {
- return "$query LIMIT $count OFFSET $from";
- }
-
-
-
- public function tableInfo($result, $mode = null)
- {
- if (is_string($result)) {
-
- $id = @sqlite_array_query(
- $this->connection,
- "PRAGMA table_info('$result');",
- SQLITE_ASSOC
- );
- $got_string = true;
- } else {
- $this->last_query = '';
- return $this->raiseError(
- DB_ERROR_NOT_CAPABLE,
- null,
- null,
- null,
- 'This DBMS can not obtain tableInfo' .
- ' from result sets'
- );
- }
- if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
- $case_func = 'strtolower';
- } else {
- $case_func = 'strval';
- }
- $count = count($id);
- $res = array();
- if ($mode) {
- $res['num_fields'] = $count;
- }
- for ($i = 0; $i < $count; $i++) {
- if (strpos($id[$i]['type'], '(') !== false) {
- $bits = explode('(', $id[$i]['type']);
- $type = $bits[0];
- $len = rtrim($bits[1], ')');
- } else {
- $type = $id[$i]['type'];
- $len = 0;
- }
- $flags = '';
- if ($id[$i]['pk']) {
- $flags .= 'primary_key ';
- if (strtoupper($type) == 'INTEGER') {
- $flags .= 'auto_increment ';
- }
- }
- if ($id[$i]['notnull']) {
- $flags .= 'not_null ';
- }
- if ($id[$i]['dflt_value'] !== null) {
- $flags .= 'default_' . rawurlencode($id[$i]['dflt_value']);
- }
- $flags = trim($flags);
- $res[$i] = array(
- 'table' => $case_func($result),
- 'name' => $case_func($id[$i]['name']),
- 'type' => $type,
- 'len' => $len,
- 'flags' => $flags,
- );
- if ($mode & DB_TABLEINFO_ORDER) {
- $res['order'][$res[$i]['name']] = $i;
- }
- if ($mode & DB_TABLEINFO_ORDERTABLE) {
- $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
- }
- }
- return $res;
- }
-
-
-
- public function getSpecialQuery($type, $args = array())
- {
- if (!is_array($args)) {
- return $this->raiseError(
- 'no key specified',
- null,
- null,
- null,
- 'Argument has to be an array.'
- );
- }
- switch ($type) {
- case 'master':
- return 'SELECT * FROM sqlite_master;';
- case 'tables':
- return "SELECT name FROM sqlite_master WHERE type='table' "
- . 'UNION ALL SELECT name FROM sqlite_temp_master '
- . "WHERE type='table' ORDER BY name;";
- case 'schema':
- return 'SELECT sql FROM (SELECT * FROM sqlite_master '
- . 'UNION ALL SELECT * FROM sqlite_temp_master) '
- . "WHERE type!='meta' "
- . 'ORDER BY tbl_name, type DESC, name;';
- case 'schemax':
- case 'schema_x':
-
- return 'SELECT sql FROM (SELECT * FROM sqlite_master '
- . 'UNION ALL SELECT * FROM sqlite_temp_master) '
- . "WHERE tbl_name LIKE '{$args['table']}' "
- . "AND type!='meta' "
- . 'ORDER BY type DESC, name;';
- case 'alter':
-
- $rows = strtr($args['rows'], $this->keywords);
- $q = array(
- 'BEGIN TRANSACTION',
- "CREATE TEMPORARY TABLE {$args['table']}_backup ({$args['rows']})",
- "INSERT INTO {$args['table']}_backup SELECT {$args['save']} FROM {$args['table']}",
- "DROP TABLE {$args['table']}",
- "CREATE TABLE {$args['table']} ({$args['rows']})",
- "INSERT INTO {$args['table']} SELECT {$rows} FROM {$args['table']}_backup",
- "DROP TABLE {$args['table']}_backup",
- 'COMMIT',
- );
-
- foreach ($q as $query) {
- $this->query($query);
- }
- return "SELECT * FROM {$args['table']};";
- default:
- return null;
- }
- }
-
- }
|