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<?php |
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namespace Data; |
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class Filter |
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{ |
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protected $children = array(); |
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protected $string; |
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protected $sqlAppend = ''; |
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/** |
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* Creates a new filter object |
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* |
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* @param false|string $string The string to create the filter from or false for an empty filter |
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*/ |
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public function __construct($string = false) |
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{ |
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if($string !== false) |
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{ |
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$this->string = $string; |
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$this->children = self::process_string($this->string); |
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} |
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} |
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static public function process_string($string) |
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{ |
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$parens = false; |
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//First check for parenthesis... |
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if($string[0] === '(' && substr($string, -1) === ')') |
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{ |
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$string = substr($string, 1, strlen($string) - 2); |
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$parens = true; |
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} |
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if(preg_match('/(.+?)( and | or )(.+)/', $string, $clauses) === 0) |
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{ |
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return array(new FilterClause($string)); |
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} |
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$children = array(); |
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if($parens) |
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{ |
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array_push($children, '('); |
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} |
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$children = array_merge($children, self::process_string($clauses[1])); |
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array_push($children, trim($clauses[2])); |
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$children = array_merge($children, self::process_string($clauses[3])); |
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if($parens) |
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{ |
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array_push($children, ')'); |
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} |
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return $children; |
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} |
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public function to_sql_string() |
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{ |
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$ret = ''; |
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$count = count($this->children); |
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for($i = 0; $i < $count; $i++) |
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{ |
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if($this->children[$i] === '(' || $this->children[$i] === ')') |
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{ |
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$ret .= $this->children[$i]; |
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} |
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else if($this->children[$i] === 'and') |
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{ |
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$ret .= ' AND '; |
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} |
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else if($this->children[$i] === 'or') |
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{ |
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$ret .= ' OR '; |
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} |
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else |
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{ |
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$ret .= $this->children[$i]->to_sql_string(); |
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} |
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} |
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return $ret.$this->sqlAppend; |
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} |
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public function to_ldap_string() |
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{ |
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$ret = ''; |
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$count = count($this->children); |
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$prefix = ''; |
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for($i = 0; $i < $count; $i++) |
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{ |
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if($this->children[$i] === 'and') |
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{ |
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if($prefix == '|') |
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{ |
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throw new \Exception('Do not support both and or'); |
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} |
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$prefix = '&'; |
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} |
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else if($this->children[$i] === 'or') |
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{ |
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if($prefix == '&') |
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{ |
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throw new \Exception('Do not support both and or'); |
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} |
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$prefix = '|'; |
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} |
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else |
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{ |
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$ret .= $this->children[$i]->to_ldap_string(); |
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} |
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} |
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if($count === 1 && $prefix === '') |
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{ |
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return $ret; |
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} |
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return '('.$prefix.$ret.')'; |
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} |
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public function to_mongo_filter() |
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{ |
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$ret = array(); |
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$count = count($this->children); |
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for($i = 0; $i < $count; $i++) |
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{ |
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if($this->children[$i] === 'and') |
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{ |
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$old = array_pop($ret); |
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array_push($ret, array('$and'=>array($old, $this->children[++$i]->toMongoFilter()))); |
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} |
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else if($this->children[$i] === 'or') |
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{ |
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$old = array_pop($ret); |
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array_push($ret, array('$or'=>array($old, $this->children[++$i]->toMongoFilter()))); |
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} |
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else |
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{ |
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array_push($ret, $this->children[$i]->toMongoFilter()); |
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} |
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} |
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if(count($ret) == 1 && is_array($ret[0])) |
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{ |
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return $ret[0]; |
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} |
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return $ret; |
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} |
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public function filterElement($element) |
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{ |
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$res = array(); |
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$count = count($this->children); |
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for($i = 0; $i < $count; $i++) |
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{ |
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if($this->children[$i] === 'and' || $this->children[$i] === 'or') |
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{ |
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array_push($res, $this->children[$i]); |
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} |
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else |
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{ |
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$tmp = $this->children[$i]->php_compare($element); |
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array_push($res, $tmp); |
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} |
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} |
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if($count === 1) |
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{ |
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return $res[0]; |
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} |
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while($count >= 3) |
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{ |
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if($res[1] === 'and') |
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{ |
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$var1 = array_shift($res); |
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array_shift($res); |
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$var2 = array_shift($res); |
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$res = array_merge(array($var1 && $var2), $res); |
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} |
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else if($res[1] === 'or') |
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{ |
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$var1 = array_shift($res); |
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array_shift($res); |
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$var2 = array_shift($res); |
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$res = array_merge(array($var1 || $var2), $res); |
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} |
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$count = count($res); |
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} |
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return $res[0]; |
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} |
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public function filter_array(&$array) |
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{ |
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if(is_array($array)) |
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{ |
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return array_filter($array, array($this, 'filterElement')); |
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} |
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return array(); |
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} |
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public function contains($substr) |
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{ |
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return strstr($this->string, $substr) !== false; |
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} |
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public function getClause($substr) |
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{ |
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$count = count($this->children); |
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for($i = 0; $i < $count; $i++) |
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{ |
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if(!is_object($this->children[$i])) |
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{ |
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continue; |
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} |
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if(strstr($this->children[$i]->var1, $substr) !== false || |
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strstr($this->children[$i]->var2, $substr) !== false) |
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{ |
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return $this->children[$i]; |
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} |
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} |
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} |
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public function addToSQLString($string) |
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{ |
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$this->sqlAppend .= $string; |
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} |
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public function appendChild($child) |
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{ |
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if($child === 'and' || $child === 'or') |
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{ |
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array_push($this->children, $child); |
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return; |
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} |
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else if(is_a($child, '\Data\Filter')) |
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{ |
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$this->children = array_merge($this->children, $child->children); |
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} |
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else |
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{ |
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$this->children = array_merge($this->children, self::process_string($child)); |
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} |
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} |
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public function getChildren() |
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{ |
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return $this->children; |
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} |
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} |
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BurningFlipside /
CommonCode
