Файловый менеджер

Файловый менеджер - Редактировать - /usr/share/php/Symfony/Component/VarExporter/Internal/Exporter.php

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<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. / namespace Symfony\Component\VarExporter\Internal; use Symfony\Component\VarExporter\Exception\NotInstantiableTypeException; /* * @author Nicolas Grekas <p@tchwork.com> * * @internal / class Exporter { /* * Prepares an array of values for VarExporter. * * For performance this method is public and has no type-hints. * * @param array &$values * @param \SplObjectStorage $objectsPool * @param array &$refsPool * @param int &$objectsCount * @param bool &$valuesAreStatic * * @return int * * @throws NotInstantiableTypeException When a value cannot be serialized / public static function prepare($values, $objectsPool, &$refsPool, &$objectsCount, &$valuesAreStatic) { $refs = $values; foreach ($values as $k => $value) { if (\is_resource($value)) { throw new NotInstantiableTypeException(get_resource_type($value).' resource'); } $refs[$k] = $objectsPool; if ($isRef = !$valueIsStatic = $values[$k] !== $objectsPool) { $values[$k] = &$value; // Break hard references to make $values completely unset($value); // independent from the original structure $refs[$k] = $value = $values[$k]; if ($value instanceof Reference && 0 > $value->id) { $valuesAreStatic = false; ++$value->count; continue; } $refsPool[] = [&$refs[$k], $value, &$value]; $refs[$k] = $values[$k] = new Reference(-\count($refsPool), $value); } if (\is_array($value)) { if ($value) { $value = self::prepare($value, $objectsPool, $refsPool, $objectsCount, $valueIsStatic); } goto handle_value; } elseif (!\is_object($value) && !$value instanceof \__PHP_Incomplete_Class) { goto handle_value; } $valueIsStatic = false; if (isset($objectsPool[$value])) { ++$objectsCount; $value = new Reference($objectsPool[$value][0]); goto handle_value; } $class = \get_class($value); $reflector = Registry::$reflectors[$class] ?? Registry::getClassReflector($class); if ($reflector->hasMethod('__serialize')) { if (!$reflector->getMethod('__serialize')->isPublic()) { throw new \Error(sprintf('Call to %s method %s::__serialize()', $reflector->getMethod('__serialize')->isProtected() ? 'protected' : 'private', $class)); } if (!\is_array($properties = $value->__serialize())) { throw new \Typerror($class.'::__serialize() must return an array'); } goto prepare_value; } $properties = []; $sleep = null; $arrayValue = (array) $value; $proto = Registry::$prototypes[$class]; if (($value instanceof \ArrayIterator \|\| $value instanceof \ArrayObject) && null !== $proto) { // ArrayIterator and ArrayObject need special care because their "flags" // option changes the behavior of the (array) casting operator. $properties = self::getArrayObjectProperties($value, $arrayValue, $proto); // populates Registry::$prototypes[$class] with a new instance Registry::getClassReflector($class, Registry::$instantiableWithoutConstructor[$class], Registry::$cloneable[$class]); } elseif ($value instanceof \SplObjectStorage && Registry::$cloneable[$class] && null !== $proto) { // By implementing Serializable, SplObjectStorage breaks // internal references; let's deal with it on our own. foreach (clone $value as $v) { $properties[] = $v; $properties[] = $value[$v]; } $properties = ['SplObjectStorage' => ["\0" => $properties]]; } elseif ($value instanceof \Serializable \|\| $value instanceof \__PHP_Incomplete_Class) { ++$objectsCount; $objectsPool[$value] = [$id = \count($objectsPool), serialize($value), [], 0]; $value = new Reference($id); goto handle_value; } if (method_exists($class, '__sleep')) { if (!\is_array($sleep = $value->__sleep())) { trigger_error('serialize(): __sleep should return an array only containing the names of instance-variables to serialize', E_USER_NOTICE); $value = null; goto handle_value; } foreach ($sleep as $name) { if (property_exists($value, $name) && !$reflector->hasProperty($name)) { $arrayValue[$name] = $value->$name; } } $sleep = array_flip($sleep); } $proto = (array) $proto; foreach ($arrayValue as $name => $v) { $i = 0; $n = (string) $name; if ('' === $n \|\| "\0" !== $n[0]) { $c = 'stdClass'; } elseif ('' === $n[1]) { $n = substr($n, 3); $c = $reflector->getProperty($n)->class; if ('Error' === $c) { $c = 'TypeError'; } elseif ('Exception' === $c) { $c = 'ErrorException'; } } else { $i = strpos($n, "\0", 2); $c = substr($n, 1, $i - 1); $n = substr($n, 1 + $i); } if (null !== $sleep) { if (!isset($sleep[$n]) \|\| ($i && $c !== $class)) { continue; } $sleep[$n] = false; } if (!\array_key_exists($name, $proto) \|\| $proto[$name] !== $v \|\| "\x00Error\x00trace" === $name \|\| "\x00Exception\x00trace" === $name) { $properties[$c][$n] = $v; } } if ($sleep) { foreach ($sleep as $n => $v) { if (false !== $v) { trigger_error(sprintf('serialize(): "%s" returned as member variable from __sleep() but does not exist', $n), E_USER_NOTICE); } } } prepare_value: $objectsPool[$value] = [$id = \count($objectsPool)]; $properties = self::prepare($properties, $objectsPool, $refsPool, $objectsCount, $valueIsStatic); ++$objectsCount; $objectsPool[$value] = [$id, $class, $properties, method_exists($class, '__unserialize') ? -$objectsCount : (method_exists($class, '__wakeup') ? $objectsCount : 0)]; $value = new Reference($id); handle_value: if ($isRef) { unset($value); // Break the hard reference created above } elseif (!$valueIsStatic) { $values[$k] = $value; } $valuesAreStatic = $valueIsStatic && $valuesAreStatic; } return $values; } public static function export($value, $indent = '') { switch (true) { case \is_int($value) \|\| \is_float($value): return var_export($value, true); case [] === $value: return '[]'; case false === $value: return 'false'; case true === $value: return 'true'; case null === $value: return 'null'; case '' === $value: return "''"; } if ($value instanceof Reference) { if (0 <= $value->id) { return '$o['.$value->id.']'; } if (!$value->count) { return self::export($value->value, $indent); } $value = -$value->id; return '&$r['.$value.']'; } $subIndent = $indent.' '; if (\is_string($value)) { $code = sprintf("'%s'", addcslashes($value, "'\\")); $code = preg_replace_callback('/([\0\r\n]++)(.)/', function ($m) use ($subIndent) { $m[1] = sprintf('\'."%s".\'', str_replace( ["\0", "\r", "\n", '\n\\'], ['\0', '\r', '\n', '\n"'."\n".$subIndent.'."\\'], $m[1] )); if ("'" === $m[2]) { return substr($m[1], 0, -2); } if ('n".\'' === substr($m[1], -4)) { return substr_replace($m[1], "\n".$subIndent.".'".$m[2], -2); } return $m[1].$m[2]; }, $code, -1, $count); if ($count && 0 === strpos($code, "''.")) { $code = substr($code, 3); } return $code; } if (\is_array($value)) { $j = -1; $code = ''; foreach ($value as $k => $v) { $code .= $subIndent; if (!\is_int($k) \|\| 1 !== $k - $j) { $code .= self::export($k, $subIndent).' => '; } if (\is_int($k) && $k > $j) { $j = $k; } $code .= self::export($v, $subIndent).",\n"; } return "[\n".$code.$indent.']'; } if ($value instanceof Values) { $code = $subIndent."\$r = [],\n"; foreach ($value->values as $k => $v) { $code .= $subIndent.'$r['.$k.'] = '.self::export($v, $subIndent).",\n"; } return "[\n".$code.$indent.']'; } if ($value instanceof Registry) { return self::exportRegistry($value, $indent, $subIndent); } if ($value instanceof Hydrator) { return self::exportHydrator($value, $indent, $subIndent); } throw new \UnexpectedValueException(sprintf('Cannot export value of type "%s".', \is_object($value) ? \get_class($value) : \gettype($value))); } private static function exportRegistry(Registry $value, string $indent, string $subIndent): string { $code = ''; $serializables = []; $seen = []; $prototypesAccess = 0; $factoriesAccess = 0; $r = '\\'.Registry::class; $j = -1; foreach ($value as $k => $class) { if (':' === ($class[1] ?? null)) { $serializables[$k] = $class; continue; } if (!Registry::$instantiableWithoutConstructor[$class]) { if (is_subclass_of($class, 'Serializable') && !method_exists($class, '__unserialize')) { $serializables[$k] = 'C:'.\strlen($class).':"'.$class.'":0:{}'; } else { $serializables[$k] = 'O:'.\strlen($class).':"'.$class.'":0:{}'; } if (is_subclass_of($class, 'Throwable')) { $eol = is_subclass_of($class, 'Error') ? "\0Error\0" : "\0Exception\0"; $serializables[$k] = substr_replace($serializables[$k], '1:{s:'.(5 + \strlen($eol)).':"'.$eol.'trace";a:0:{}}', -4); } continue; } $code .= $subIndent.(1 !== $k - $j ? $k.' => ' : ''); $j = $k; $eol = ",\n"; $c = '['.self::export($class).']'; if ($seen[$class] ?? false) { if (Registry::$cloneable[$class]) { ++$prototypesAccess; $code .= 'clone $p'.$c; } else { ++$factoriesAccess; $code .= '$f'.$c.'()'; } } else { $seen[$class] = true; if (Registry::$cloneable[$class]) { $code .= 'clone ('.($prototypesAccess++ ? '$p' : '($p = &'.$r.'::$prototypes)').$c.' ?? '.$r.'::p'; } else { $code .= '('.($factoriesAccess++ ? '$f' : '($f = &'.$r.'::$factories)').$c.' ?? '.$r.'::f'; $eol = '()'.$eol; } $code .= '('.substr($c, 1, -1).'))'; } $code .= $eol; } if (1 === $prototypesAccess) { $code = str_replace('($p = &'.$r.'::$prototypes)', $r.'::$prototypes', $code); } if (1 === $factoriesAccess) { $code = str_replace('($f = &'.$r.'::$factories)', $r.'::$factories', $code); } if ('' !== $code) { $code = "\n".$code.$indent; } if ($serializables) { $code = $r.'::unserialize(['.$code.'], '.self::export($serializables, $indent).')'; } else { $code = '['.$code.']'; } return '$o = '.$code; } private static function exportHydrator(Hydrator $value, string $indent, string $subIndent): string { $code = ''; foreach ($value->properties as $class => $properties) { $code .= $subIndent.' '.self::export($class).' => '.self::export($properties, $subIndent.' ').",\n"; } $code = [ self::export($value->registry, $subIndent), self::export($value->values, $subIndent), '' !== $code ? "[\n".$code.$subIndent.']' : '[]', self::export($value->value, $subIndent), self::export($value->wakeups, $subIndent), ]; return '\\'.\get_class($value)."::hydrate(\n".$subIndent.implode(",\n".$subIndent, $code)."\n".$indent.')'; } /** * @param \ArrayIterator\|\ArrayObject $value * @param \ArrayIterator\|\ArrayObject $proto */ private static function getArrayObjectProperties($value, array &$arrayValue, $proto): array { $reflector = $value instanceof \ArrayIterator ? 'ArrayIterator' : 'ArrayObject'; $reflector = Registry::$reflectors[$reflector] ?? Registry::getClassReflector($reflector); $properties = [ $arrayValue, $reflector->getMethod('getFlags')->invoke($value), $value instanceof \ArrayObject ? $reflector->getMethod('getIteratorClass')->invoke($value) : 'ArrayIterator', ]; $reflector = $reflector->getMethod('setFlags'); $reflector->invoke($proto, \ArrayObject::STD_PROP_LIST); if ($properties[1] & \ArrayObject::STD_PROP_LIST) { $reflector->invoke($value, 0); $properties[0] = (array) $value; } else { $reflector->invoke($value, \ArrayObject::STD_PROP_LIST); $arrayValue = (array) $value; } $reflector->invoke($value, $properties[1]); if ([[], 0, 'ArrayIterator'] === $properties) { $properties = []; } else { if ('ArrayIterator' === $properties[2]) { unset($properties[2]); } $properties = [$reflector->class => ["\0" => $properties]]; } return $properties; } }

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