se/SE/se-lib/V.php

<?php

/**
 * @see http://pl2.php.net/manual/en/book.var.php
 *
 * Define Your own convert function: var func_type_convert_{$type}($var);
 */
class V {

	/**
	 * Get variable from array or object.
	 */
	public static function get($name, $default, $from, $type = '', $filterCallback = null) {
		if (empty($name)) return null;
		$ret = null;
		if (is_array($from)) {
			if (array_key_exists($name, $from)) {
				$ret = $from[$name];
			}
		}
		else if (is_object($from)) {
			if (isset($from->$name)) {
				$ret = $from->$name;
			}
		}

		if (isset($ret) && $type != '') {
			$ret = V::convert($ret, $type);
		}

		if (!empty($filterCallback)) {
			if ($type == 'array' && is_array($ret) && !empty($ret)) {
				$ret = V::filter($ret, $filterCallback);
			}
		}

		$ret = (null !== $ret)? $ret : $default;
		return $ret;
	}

	/**
	 * Convert variable type.
	 * @usage: V::convert($from, 'url');
	 */
	public static function convert($from, $type = 'string') {
		$type = strtolower($type);

		// is_scalar($from) - return TRUE if int,float,string,bool, FALSE if array,object,resource, ...

		$ret = null;
		switch ($type) {
			case 'string':
				if (is_scalar($from)) {
					$ret = $from;
					settype($ret, $type);
				}
				break;
			case 'word':
				if (is_scalar($from)) {
					$ret = $from;
					settype($ret, 'string');
					$ret = trim($ret);
					if (false !== ($pos = strpos($ret, ' '))) {
						$ret = substr($ret, 0, $pos);
					}
				}
				break;
			case 'login':// [a-zA-Z.-_]
				if (is_scalar($from)) {
					$ret = $from;
					settype($ret, 'string');
					$ret = trim($ret);
					if (!preg_match("/^[a-zA-Z.-_]*$/", $ret, $matches)) {
						$ret = null;
					}
				}
				break;
			case 'url':// [a-zA-Z0-9_-]
				if (is_scalar($from)) {
					$ret = $from;
					settype($ret, 'string');
					$ret = trim($ret);
					$pl_letters = array('ą', 'ć', 'ę', 'ł', 'ń', 'ó', 'ś', 'ź', 'ż', 'Ą', 'Ć', 'Ę', 'Ł', 'Ń', 'Ó', 'Ś', 'Ź', 'Ż');
					$en_letters = array('a', 'c', 'e', 'l', 'n', 'o', 's', 'z', 'z', 'A', 'C', 'E', 'L', 'N', 'O', 'S', 'Z', 'Z');
					$ret = str_replace($pl_letters, $en_letters, $ret);
					$ret = preg_replace('/[^a-zA-Z0-9_-]+/', '_', $ret);
				}
				break;
			case 'int':
			case 'integer':
				if (is_scalar($from)) {
					$ret = $from;
					settype($ret, $type);
				}
				break;
			case 'float':
			case 'double':
				if (is_scalar($from)) {
					$ret = str_replace(',', '.', $from);
					settype($ret, $type);
				}
				break;
			case 'object':
			case 'array':
				if (is_scalar($from) || is_array($from) || is_object($from)) {
					$ret = $from;
					settype($ret, $type);
				}
				break;
			case 'int_array':
				if (is_scalar($from) || is_array($from) || is_object($from)) {
					$ret = array();
					$arr = $from;
					settype($arr, 'array');
					foreach ($arr as $v) {
						$v = V::convert($v, 'int');
						$ret[] = $v;
					}
				}
				break;
			case 'uint_array':// uncigned int array
				if (is_scalar($from) || is_array($from) || is_object($from)) {
					$ret = array();
					$arr = $from;
					settype($arr, 'array');
					foreach ($arr as $v) {
						$v = V::convert($v, 'int');
						if ($v <= 0) continue;
						$ret[] = $v;
					}
				}
				break;
			case 'float_array':// uncigned int array
				if (is_scalar($from) || is_array($from) || is_object($from)) {
					$ret = array();
					$arr = $from;
					settype($arr, 'array');
					foreach ($arr as $v) {
						$v = V::convert($v, 'float');
						$ret[] = $v;
					}
				}
				break;
			default:
				$fun = 'func_type_convert_'.$type;
				if (function_exists($fun)) {
					$ret = $fun($from);
				}
				break;
		}
		return $ret;
	}

	/**
	 * Merge the contents of two objects/array.
	 *
	 * array V::extend(mixed $defaults, mixed $params);
	 * @see http://api.jquery.com/jQuery.extend/
	 * is_scalar($from) - return TRUE if int,float,string,bool, FALSE if array,object,resource, ...
	 */
	public static function extend($defaults, $params) {
		$ret = array();
		$d = (is_array($defaults))? $defaults : (array)$defaults;
		$p = (is_array($params))? $params : (array)$params;
		foreach ($d as $k => $v) {
			$ret[$k] = $v;
		}
		foreach ($p as $k => $v) {
			if (array_key_exists($k, $ret) && (is_array($ret[$k]) || is_object($ret[$k])) && (is_array($v) || is_object($v))) {
				$ret[$k] = V::extend($ret[$k], $v);
			} else {
				$ret[$k] = $v;
			}
		}
		return $ret;
	}

	public static function json_encode_latin2($o, $force_object = false) {
		if ($o === '') {
			return '""';
		}
		else if (!$o) {
			return 'null';
		}
		else if (is_array($o)) {
			$arr = '';
			if ($force_object) {
				foreach ($o as $k => $v) {
					$arr[] = '"'.$k.'":'.V::json_encode_latin2($v, $force_object);
				}
				return '{'.implode(',',$arr).'}';
			}
			else {
				foreach ($o as $k => $v) {
					if (is_string($k)) $arr[] = '"'.$k.'":'.V::json_encode_latin2($v, $force_object);
					else $arr[] = V::json_encode_latin2($v);
				}
				return '['.implode(',',$arr).']';
			}
		}
		else if (is_object($o)) {
			$arr = '';
			foreach (get_object_vars($o) as $k => $v) {
				$arr[] = '"'.$k.'":'.V::json_encode_latin2($v, $force_object);
			}
			return '{'.implode(',',$arr).'}';
		}
		else if (is_string($o)) {
			return '"'.addslashes(str_replace(array("\n","\r"), array('\n',''), $o)).'"';
		}
		else if (is_numeric($o)) {
			return ''.$o.'';
		}
		else if (is_bool($o)) {
			return ''.(($o)? 'true' : 'false').'';
		}
	}

	public static function copy($o) {
		$null = null;
		if (!$o) {
			return $null;
		}
		else if (is_array($o)) {
			$ret = array();
			foreach ($o as $k => $v) {
				$ret[$k] = $v;
			}
			return $ret;
		}
		else if (is_object($o)) {
			$ret = new stdClass();
			foreach (get_object_vars($o) as $k => $v) {
				$ret->$k = $v;
			}
			return $ret;
		}
		else {
			$ret = $o;
			return $ret;
		}
	}

	public static function make_link($prefix = '', $params = array()) {
		$ret = '';
		if ($prefix) {
			$ret = $prefix;
		}
		if (!empty($params)) {
			$ret_arr = array();
			foreach ($params as $k => $v) {
				$ret_arr[] = $k . "=" . $v;
			}
			$ret .= "?" . implode("&", $ret_arr);
		}
		return $ret;
	}

	public static function strShort($label, $maxLength = 10, $suffix = ' ...') {
		if (strlen($label) > $maxLength) {
			$pos = strpos($label, ' - ');
			if ($pos > $maxLength || $pos < 5) {
				$label = substr($label, 0, $pos) . $suffix;
			} else {
				$label = substr($label, 0, $pos);
			}
		}
		return $label;
	}

	public static function strShortUtf8($label, $maxLength = 10, $suffix = ' ...') {
		if (mb_strlen($label, 'utf-8') > $maxLength) {
			$pos = mb_strpos($label, ' - ', 0, 'utf-8');
			if ($pos > $maxLength || $pos < 5) {
				$label = mb_substr($label, 0, $maxLength, 'utf-8') . $suffix;
			} else {
				$label = mb_substr($label, 0, $pos, 'utf-8');
			}
		}
		return $label;
	}

	public static function filter($array, $filterCallback) {
		if (!is_callable($filterCallback)) {
			throw new Exception("callback is not callable '" . ((is_array($filterCallback))? implode('.', $filterCallback) : $filterCallback) . "'");
		}
		return array_filter($array, $filterCallback);
	}

	public static function filterNotEmpty($value) {
		return !empty($value);
	}

	public static function filterInteger($value) {// An integer or string with integer value
		if (is_int($value)) {
			return true;
		} else if (is_string($value)) {
			if ((string)(int)$value === $value) {
				return true;
			}
		}
		return false;
	}
	public static function filterNegativeInteger($value) {// An integer containing only negative values (..,-2,-1)
		if (V::filterInteger($value)) {
			if (intval($value) < 0) {
				return true;
			}
		}
		return false;
	}
	public static function filterNonNegativeInteger($value) {// An integer containing only non-negative values (0,1,2,..)
		if (V::filterInteger($value)) {
			if (intval($value) >= 0) {
				return true;
			}
		}
		return false;
	}
	public static function filterNonPositiveInteger($value) {// An integer containing only non-positive values (..,-2,-1,0)
		if (V::filterInteger($value)) {
			if (intval($value) <= 0) {
				return true;
			}
		}
		return false;
	}
	public static function filterPositiveInteger($value) {// An integer containing only positive values (1,2,..)
		if (V::filterInteger($value)) {
			if (intval($value) > 0) {
				return true;
			}
		}
		return false;
	}

	public static function validate($argName, $args, $params) {
		//$what = V::validate('what', $args, array('type'=>'word', 'not_empty'=>true, 'max_length'=>'255', 'values'=>$when_values));
		$argValue = V::get($argName, null, $args);
		$fldLabel = V::get('fld_label', $argName, $params);
		if (array_key_exists('not_empty', $params) && true == $params['not_empty']) {
			if (!array_key_exists($argName, $args) || empty($args[$argName])) throw new Exception("Field {$fldLabel} not set.");
		}
		$params['fld_label'] = $fldLabel;
		return V::validateValue($argValue, $params);
	}

	public static function validateValue($value, $params) {
		$fldLabel = V::get('fld_label', '', $params);
		$maxLength = V::get('max_length', 0, $params);
		if ($maxLength > 0) {
			if (strlen($value) > $maxLength) throw new Exception("'{$fldLabel}' cannot be longer then {$maxLength}.");
		}
		$allowedValues = V::get('values', null, $params);
		if (is_array($allowedValues) && !empty($allowedValues)) {
			if (!in_array($value, $allowedValues)) throw new Exception("'{$fldLabel}' value is not allowed");
		}
		$type = V::get('type', null, $params);
		if ($type != null) {
			if ('word' == $type) {
				if (!is_scalar($value) || !preg_match('/^[a-zA-Z_-]*$/', $value)) throw new Exception("required type '{$type}' ({$fldLabel})");
			} else {
				throw new Exception("Unimplemented type to validate: '{$type}'");
			}
		}
		if (array_key_exists('equal', $params)) {
			if ($value != $params['equal']) throw new Exception(V::get('error_msg_equal', "'{$fldLabel}' must be equal to '{$params['equal']}'", $params));
		}
		if (array_key_exists('equalStrict', $params)) {
			if ($value !== $params['equalStrict']) throw new Exception(V::get('error_msg_equalStrict', "'{$fldLabel}' must be strict equal to '{$params['equal']}'", $params));
		}
		return $value;
	}

	public static function exec($cmd, &$out, &$ret) {
		$out = null;
		$ret = null;
		exec($cmd, $out, $ret);
		return $ret;
	}

	public static function execRemote($host, $login, $password, $command, &$out, &$ret, $port = 22) {
		$out = null;
		$ret = null;
		$pass = $password;
		$pass = str_replace('!', '\!', $pass);
		$sshPort = (22 != $port)? "-p {$port}" : '';
		$cmd = '/opt/local/bin/sshpass -p ' . $pass . ' ssh -o StrictHostKeyChecking=no -o ConnectTimeout=99999 ' . $sshPort . ' ' . $login . '@' . $host . ' -t <<EOF
declare PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/local/bin:/opt/local/lib/mysql55/bin/:/Applications/Server.app/Contents/ServerRoot/usr/sbin/

'.$command.'

EOF';
		exec($cmd, $out, $ret);
		return $ret;
	}

	public static function execRootRemote($host, $login, $password, $command, &$out, &$ret, $port = 22) {
		$out = null;
		$ret = null;
		$pass = $password;
		$pass = str_replace('!', '\!', $pass);
		$sshPort = (22 != $port)? "-p {$port}" : '';
		$cmd = '/opt/local/bin/sshpass -p ' . $pass . ' ssh -o StrictHostKeyChecking=no -o ConnectTimeout=99999 ' . $sshPort . ' ' . $login . '@' . $host . ' -t <<EOF
sudo -n su -
declare PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/local/bin:/opt/local/lib/mysql55/bin/:/Applications/Server.app/Contents/ServerRoot/usr/sbin/

'.$command.'

EOF';
		exec($cmd, $out, $ret);
		return $ret;
	}

	public static function cloneArray($arr) {
		return $arr;
	}

	public function humanFileSize($bytes) {
		$bytes = intval($bytes);
		$arBytes = array(
			0 => array("UNIT" => "TB", "VALUE" => pow(1024, 4)),
			1 => array("UNIT" => "GB", "VALUE" => pow(1024, 3)),
			2 => array("UNIT" => "MB", "VALUE" => pow(1024, 2)),
			3 => array("UNIT" => "KB", "VALUE" => 1024),
			4 => array("UNIT" => "B",  "VALUE" => 1)
		);
		foreach($arBytes as $arItem) {
			if ($bytes >= $arItem["VALUE"]) {
				$result = $bytes / $arItem["VALUE"];
				$result = str_replace(".", "," , strval(round($result, 2)))." ".$arItem["UNIT"];
				break;
			}
		}
		return $result;
	}

}