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signaturepdf/vendor/fatfree/db/sql.php

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<?php
/*
Copyright (c) 2009-2019 F3::Factory/Bong Cosca, All rights reserved.
This file is part of the Fat-Free Framework (http://fatfreeframework.com).
This is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or later.
Fat-Free Framework is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License along
with Fat-Free Framework. If not, see <http://www.gnu.org/licenses/>.
*/
namespace DB;
//! PDO wrapper
class SQL {
//@{ Error messages
const
E_PKey='Table %s does not have a primary key';
//@}
const
PARAM_FLOAT='float';
protected
//! UUID
$uuid,
//! Raw PDO
$pdo,
//! Data source name
$dsn,
//! Database engine
$engine,
//! Database name
$dbname,
//! Transaction flag
$trans=FALSE,
//! Number of rows affected by query
$rows=0,
//! SQL log
$log;
/**
* Begin SQL transaction
* @return bool
**/
function begin() {
$out=$this->pdo->begintransaction();
$this->trans=TRUE;
return $out;
}
/**
* Rollback SQL transaction
* @return bool
**/
function rollback() {
$out=FALSE;
if ($this->pdo->inTransaction())
$out=$this->pdo->rollback();
$this->trans=FALSE;
return $out;
}
/**
* Commit SQL transaction
* @return bool
**/
function commit() {
$out=FALSE;
if ($this->pdo->inTransaction())
$out=$this->pdo->commit();
$this->trans=FALSE;
return $out;
}
/**
* Return transaction flag
* @return bool
**/
function trans() {
return $this->trans;
}
/**
* Map data type of argument to a PDO constant
* @return int
* @param $val scalar
**/
function type($val) {
switch (gettype($val)) {
case 'NULL':
return \PDO::PARAM_NULL;
case 'boolean':
return \PDO::PARAM_BOOL;
case 'integer':
return \PDO::PARAM_INT;
case 'resource':
return \PDO::PARAM_LOB;
case 'float':
return self::PARAM_FLOAT;
default:
return \PDO::PARAM_STR;
}
}
/**
* Cast value to PHP type
* @return mixed
* @param $type string
* @param $val mixed
**/
function value($type,$val) {
switch ($type) {
case self::PARAM_FLOAT:
if (!is_string($val))
$val=str_replace(',','.',$val);
return $val;
case \PDO::PARAM_NULL:
return NULL;
case \PDO::PARAM_INT:
return (int)$val;
case \PDO::PARAM_BOOL:
return (bool)$val;
case \PDO::PARAM_STR:
return (string)$val;
case \PDO::PARAM_LOB:
return (binary)$val;
}
}
/**
* Execute SQL statement(s)
* @return array|int|FALSE
* @param $cmds string|array
* @param $args string|array
* @param $ttl int|array
* @param $log bool
* @param $stamp bool
**/
function exec($cmds,$args=NULL,$ttl=0,$log=TRUE,$stamp=FALSE) {
$tag='';
if (is_array($ttl))
list($ttl,$tag)=$ttl;
$auto=FALSE;
if (is_null($args))
$args=[];
elseif (is_scalar($args))
$args=[1=>$args];
if (is_array($cmds)) {
if (count($args)<($count=count($cmds)))
// Apply arguments to SQL commands
$args=array_fill(0,$count,$args);
if (!$this->trans) {
$this->begin();
$auto=TRUE;
}
}
else {
$count=1;
$cmds=[$cmds];
$args=[$args];
}
if ($this->log===FALSE)
$log=FALSE;
$fw=\Base::instance();
$cache=\Cache::instance();
$result=FALSE;
for ($i=0;$i<$count;++$i) {
$cmd=$cmds[$i];
$arg=$args[$i];
// ensure 1-based arguments
if (array_key_exists(0,$arg)) {
array_unshift($arg,'');
unset($arg[0]);
}
if (!preg_replace('/(^\s+|[\s;]+$)/','',$cmd))
continue;
$now=microtime(TRUE);
$keys=$vals=[];
if ($fw->CACHE && $ttl && ($cached=$cache->exists(
$hash=$fw->hash($this->dsn.$cmd.
$fw->stringify($arg)).($tag?'.'.$tag:'').'.sql',$result)) &&
$cached[0]+$ttl>microtime(TRUE)) {
foreach ($arg as $key=>$val) {
$vals[]=$fw->stringify(is_array($val)?$val[0]:$val);
$keys[]='/'.preg_quote(is_numeric($key)?chr(0).'?':$key).
'/';
}
if ($log)
$this->log.=($stamp?(date('r').' '):'').'('.
sprintf('%.1f',1e3*(microtime(TRUE)-$now)).'ms) '.
'[CACHED] '.
preg_replace($keys,$vals,
str_replace('?',chr(0).'?',$cmd),1).PHP_EOL;
}
elseif (is_object($query=$this->pdo->prepare($cmd))) {
foreach ($arg as $key=>$val) {
if (is_array($val)) {
// User-specified data type
$query->bindvalue($key,$val[0],
$val[1]==self::PARAM_FLOAT?\PDO::PARAM_STR:$val[1]);
$vals[]=$fw->stringify($this->value($val[1],$val[0]));
}
else {
// Convert to PDO data type
$query->bindvalue($key,$val,
($type=$this->type($val))==self::PARAM_FLOAT?
\PDO::PARAM_STR:$type);
$vals[]=$fw->stringify($this->value($type,$val));
}
$keys[]='/'.preg_quote(is_numeric($key)?chr(0).'?':$key).
'/';
}
if ($log)
$this->log.=($stamp?(date('r').' '):'').'(-0ms) '.
preg_replace($keys,$vals,
str_replace('?',chr(0).'?',$cmd),1).PHP_EOL;
$query->execute();
if ($log)
$this->log=str_replace('(-0ms)',
'('.sprintf('%.1f',1e3*(microtime(TRUE)-$now)).'ms)',
$this->log);
if (($error=$query->errorinfo()) && $error[0]!=\PDO::ERR_NONE) {
// Statement-level error occurred
if ($this->trans)
$this->rollback();
user_error('PDOStatement: '.$error[2],E_USER_ERROR);
}
if (preg_match('/(?:^[\s\(]*'.
'(?:WITH|EXPLAIN|SELECT|PRAGMA|SHOW)|RETURNING)\b/is',$cmd) ||
(preg_match('/^\s*(?:CALL|EXEC)\b/is',$cmd) &&
$query->columnCount())) {
$result=$query->fetchall(\PDO::FETCH_ASSOC);
// Work around SQLite quote bug
if (preg_match('/sqlite2?/',$this->engine))
foreach ($result as $pos=>$rec) {
unset($result[$pos]);
$result[$pos]=[];
foreach ($rec as $key=>$val)
$result[$pos][trim($key,'\'"[]`')]=$val;
}
$this->rows=count($result);
if ($fw->CACHE && $ttl)
// Save to cache backend
$cache->set($hash,$result,$ttl);
}
else
$this->rows=$result=$query->rowcount();
$query->closecursor();
unset($query);
}
elseif (($error=$this->pdo->errorInfo()) && $error[0]!=\PDO::ERR_NONE) {
// PDO-level error occurred
if ($this->trans)
$this->rollback();
user_error('PDO: '.$error[2],E_USER_ERROR);
}
}
if ($this->trans && $auto)
$this->commit();
return $result;
}
/**
* Return number of rows affected by last query
* @return int
**/
function count() {
return $this->rows;
}
/**
* Return SQL profiler results (or disable logging)
* @return string
* @param $flag bool
**/
function log($flag=TRUE) {
if ($flag)
return $this->log;
$this->log=FALSE;
}
/**
* Return TRUE if table exists
* @return bool
* @param $table string
**/
function exists($table) {
$mode=$this->pdo->getAttribute(\PDO::ATTR_ERRMODE);
$this->pdo->setAttribute(\PDO::ATTR_ERRMODE,\PDO::ERRMODE_SILENT);
$out=$this->pdo->
query('SELECT 1 FROM '.$this->quotekey($table).' LIMIT 1');
$this->pdo->setAttribute(\PDO::ATTR_ERRMODE,$mode);
return is_object($out);
}
/**
* Retrieve schema of SQL table
* @return array|FALSE
* @param $table string
* @param $fields array|string
* @param $ttl int|array
**/
function schema($table,$fields=NULL,$ttl=0) {
$fw=\Base::instance();
$cache=\Cache::instance();
if ($fw->CACHE && $ttl &&
($cached=$cache->exists(
$hash=$fw->hash($this->dsn.$table).'.schema',$result)) &&
$cached[0]+$ttl>microtime(TRUE))
return $result;
if (strpos($table,'.'))
list($schema,$table)=explode('.',$table);
// Supported engines
// format: engine_name => array of:
// 0: query
// 1: field name of column name
// 2: field name of column type
// 3: field name of default value
// 4: field name of nullable value
// 5: expected field value to be nullable
// 6: field name of primary key flag
// 7: expected field value to be a primary key
// 8: field name of auto increment check (optional)
// 9: expected field value to be an auto-incremented identifier
$cmd=[
'sqlite2?'=>[
'SELECT * FROM pragma_table_info('.$this->quote($table).') JOIN ('.
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'SELECT sql FROM sqlite_master WHERE (type=\'table\' OR type=\'view\') AND '.
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'name='.$this->quote($table).')',
'name','type','dflt_value','notnull',0,'pk',TRUE,'sql',
'/\W(%s)\W+[^,]+?AUTOINCREMENT\W/i'],
'mysql'=>[
'SHOW columns FROM `'.$this->dbname.'`.`'.$table.'`',
'Field','Type','Default','Null','YES','Key','PRI','Extra','auto_increment'],
'mssql|sqlsrv|sybase|dblib|pgsql|odbc'=>[
'SELECT '.
'C.COLUMN_NAME AS field,'.
'C.DATA_TYPE AS type,'.
'C.COLUMN_DEFAULT AS defval,'.
'C.IS_NULLABLE AS nullable,'.
($this->engine=='pgsql'
?'COALESCE(POSITION(\'nextval\' IN C.COLUMN_DEFAULT),0) AS autoinc,'
:'columnproperty(object_id(C.TABLE_NAME),C.COLUMN_NAME,\'IsIdentity\')'
.' AS autoinc,').
'T.CONSTRAINT_TYPE AS pkey '.
'FROM INFORMATION_SCHEMA.COLUMNS AS C '.
'LEFT OUTER JOIN '.
'INFORMATION_SCHEMA.KEY_COLUMN_USAGE AS K '.
'ON '.
'C.TABLE_NAME=K.TABLE_NAME AND '.
'C.COLUMN_NAME=K.COLUMN_NAME AND '.
'C.TABLE_SCHEMA=K.TABLE_SCHEMA '.
($this->dbname?
('AND C.TABLE_CATALOG=K.TABLE_CATALOG '):'').
'LEFT OUTER JOIN '.
'INFORMATION_SCHEMA.TABLE_CONSTRAINTS AS T ON '.
'K.TABLE_NAME=T.TABLE_NAME AND '.
'K.CONSTRAINT_NAME=T.CONSTRAINT_NAME AND '.
'K.TABLE_SCHEMA=T.TABLE_SCHEMA '.
($this->dbname?
('AND K.TABLE_CATALOG=T.TABLE_CATALOG '):'').
'WHERE '.
'C.TABLE_NAME='.$this->quote($table).
($this->dbname?
(' AND C.TABLE_CATALOG='.
$this->quote($this->dbname)):''),
'field','type','defval','nullable','YES','pkey','PRIMARY KEY','autoinc',1],
'oci'=>[
'SELECT c.column_name AS field, '.
'c.data_type AS type, '.
'c.data_default AS defval, '.
'c.nullable AS nullable, '.
'(SELECT t.constraint_type '.
'FROM all_cons_columns acc '.
'LEFT OUTER JOIN all_constraints t '.
'ON acc.constraint_name=t.constraint_name '.
'WHERE acc.table_name='.$this->quote($table).' '.
'AND acc.column_name=c.column_name '.
'AND constraint_type='.$this->quote('P').') AS pkey '.
'FROM all_tab_cols c '.
'WHERE c.table_name='.$this->quote($table),
'FIELD','TYPE','DEFVAL','NULLABLE','Y','PKEY','P']
];
if (is_string($fields))
$fields=\Base::instance()->split($fields);
$conv=[
'int\b|integer'=>\PDO::PARAM_INT,
'bool'=>\PDO::PARAM_BOOL,
'blob|bytea|image|binary'=>\PDO::PARAM_LOB,
'float|real|double|decimal|numeric'=>self::PARAM_FLOAT,
'.+'=>\PDO::PARAM_STR
];
foreach ($cmd as $key=>$val)
if (preg_match('/'.$key.'/',$this->engine)) {
$rows=[];
foreach ($this->exec($val[0],NULL) as $row)
if (!$fields || in_array($row[$val[1]],$fields)) {
foreach ($conv as $regex=>$type)
if (preg_match('/'.$regex.'/i',$row[$val[2]]))
break;
if (!isset($rows[$row[$val[1]]])) // handle duplicate rows in PgSQL
$rows[$row[$val[1]]]=[
'type'=>$row[$val[2]],
'pdo_type'=>$type,
'default'=>is_string($row[$val[3]])?
preg_replace('/^\s*([\'"])(.*)\1\s*/','\2',
$row[$val[3]]):$row[$val[3]],
'nullable'=>$row[$val[4]]==$val[5],
'pkey'=>$row[$val[6]]==$val[7],
'auto_inc'=>isset($val[8]) && isset($row[$val[8]])
? ($this->engine=='sqlite'?
(bool) preg_match(sprintf($val[9],$row[$val[1]]),
$row[$val[8]]):
($row[$val[8]]==$val[9])
) : NULL,
];
}
if ($fw->CACHE && $ttl)
// Save to cache backend
$cache->set($hash,$rows,$ttl);
return $rows;
}
user_error(sprintf(self::E_PKey,$table),E_USER_ERROR);
return FALSE;
}
/**
* Quote string
* @return string
* @param $val mixed
* @param $type int
**/
function quote($val,$type=\PDO::PARAM_STR) {
return $this->engine=='odbc'?
(is_string($val)?
\Base::instance()->stringify(str_replace('\'','\'\'',$val)):
$val):
$this->pdo->quote($val,$type);
}
/**
* Return UUID
* @return string
**/
function uuid() {
return $this->uuid;
}
/**
* Return parent object
* @return \PDO
**/
function pdo() {
return $this->pdo;
}
/**
* Return database engine
* @return string
**/
function driver() {
return $this->engine;
}
/**
* Return server version
* @return string
**/
function version() {
return $this->pdo->getattribute(\PDO::ATTR_SERVER_VERSION);
}
/**
* Return database name
* @return string
**/
function name() {
return $this->dbname;
}
/**
* Return quoted identifier name
* @return string
* @param $key
* @param bool $split
**/
function quotekey($key, $split=TRUE) {
$delims=[
'sqlite2?|mysql'=>'``',
'pgsql|oci'=>'""',
'mssql|sqlsrv|odbc|sybase|dblib'=>'[]'
];
$use='';
foreach ($delims as $engine=>$delim)
if (preg_match('/'.$engine.'/',$this->engine)) {
$use=$delim;
break;
}
return $use[0].($split ? implode($use[1].'.'.$use[0],explode('.',$key))
: $key).$use[1];
}
/**
* Redirect call to PDO object
* @return mixed
* @param $func string
* @param $args array
**/
function __call($func,array $args) {
return call_user_func_array([$this->pdo,$func],$args);
}
//! Prohibit cloning
private function __clone() {
}
/**
* Instantiate class
* @param $dsn string
* @param $user string
* @param $pw string
* @param $options array
**/
function __construct($dsn,$user=NULL,$pw=NULL,array $options=NULL) {
$fw=\Base::instance();
$this->uuid=$fw->hash($this->dsn=$dsn);
if (preg_match('/^.+?(?:dbname|database)=(.+?)(?=;|$)/is',$dsn,$parts))
$this->dbname=str_replace('\\ ',' ',$parts[1]);
if (!$options)
$options=[];
if (isset($parts[0]) && strstr($parts[0],':',TRUE)=='mysql')
$options+=[\PDO::MYSQL_ATTR_INIT_COMMAND=>'SET NAMES '.
strtolower(str_replace('-','',$fw->ENCODING)).';'];
$this->pdo=new \PDO($dsn,$user,$pw,$options);
$this->engine=$this->pdo->getattribute(\PDO::ATTR_DRIVER_NAME);
}
}