271 lines
7.3 KiB
PHP
271 lines
7.3 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\VarDumper\Cloner;
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use Symfony\Component\VarDumper\Caster\Caster;
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/**
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* @author Nicolas Grekas <p@tchwork.com>
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*/
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class Data
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{
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private $data;
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private $position = 0;
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private $key = 0;
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private $maxDepth = 20;
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private $maxItemsPerDepth = -1;
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private $useRefHandles = -1;
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/**
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* @param array $data A array as returned by ClonerInterface::cloneVar()
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*/
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public function __construct(array $data)
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{
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$this->data = $data;
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}
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/**
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* @return array The raw data structure
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*/
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public function getRawData()
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{
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return $this->data;
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}
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/**
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* Returns a depth limited clone of $this.
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*
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* @param int $maxDepth The max dumped depth level
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*
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* @return self A clone of $this
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*/
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public function withMaxDepth($maxDepth)
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{
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$data = clone $this;
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$data->maxDepth = (int) $maxDepth;
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return $data;
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}
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/**
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* Limits the number of elements per depth level.
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*
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* @param int $maxItemsPerDepth The max number of items dumped per depth level
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*
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* @return self A clone of $this
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*/
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public function withMaxItemsPerDepth($maxItemsPerDepth)
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{
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$data = clone $this;
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$data->maxItemsPerDepth = (int) $maxItemsPerDepth;
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return $data;
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}
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/**
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* Enables/disables objects' identifiers tracking.
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*
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* @param bool $useRefHandles False to hide global ref. handles
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*
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* @return self A clone of $this
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*/
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public function withRefHandles($useRefHandles)
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{
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$data = clone $this;
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$data->useRefHandles = $useRefHandles ? -1 : 0;
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return $data;
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}
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/**
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* Seeks to a specific key in nested data structures.
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*
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* @param string|int $key The key to seek to
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*
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* @return self|null A clone of $this of null if the key is not set
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*/
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public function seek($key)
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{
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$item = $this->data[$this->position][$this->key];
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if (!$item instanceof Stub || !$item->position) {
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return;
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}
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$keys = array($key);
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switch ($item->type) {
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case Stub::TYPE_OBJECT:
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$keys[] = Caster::PREFIX_DYNAMIC.$key;
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$keys[] = Caster::PREFIX_PROTECTED.$key;
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$keys[] = Caster::PREFIX_VIRTUAL.$key;
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$keys[] = "\0$item->class\0$key";
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case Stub::TYPE_ARRAY:
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case Stub::TYPE_RESOURCE:
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break;
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default:
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return;
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}
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$data = null;
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$children = $this->data[$item->position];
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foreach ($keys as $key) {
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if (isset($children[$key]) || array_key_exists($key, $children)) {
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$data = clone $this;
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$data->key = $key;
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$data->position = $item->position;
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break;
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}
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}
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return $data;
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}
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/**
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* Dumps data with a DumperInterface dumper.
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*/
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public function dump(DumperInterface $dumper)
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{
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$refs = array(0);
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$this->dumpItem($dumper, new Cursor(), $refs, $this->data[$this->position][$this->key]);
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}
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/**
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* Depth-first dumping of items.
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*
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* @param DumperInterface $dumper The dumper being used for dumping
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* @param Cursor $cursor A cursor used for tracking dumper state position
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* @param array &$refs A map of all references discovered while dumping
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* @param mixed $item A Stub object or the original value being dumped
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*/
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private function dumpItem($dumper, $cursor, &$refs, $item)
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{
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$cursor->refIndex = 0;
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$cursor->softRefTo = $cursor->softRefHandle = $cursor->softRefCount = 0;
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$cursor->hardRefTo = $cursor->hardRefHandle = $cursor->hardRefCount = 0;
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$firstSeen = true;
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if (!$item instanceof Stub) {
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$cursor->attr = array();
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$type = gettype($item);
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} elseif (Stub::TYPE_REF === $item->type) {
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if ($item->handle) {
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if (!isset($refs[$r = $item->handle - (PHP_INT_MAX >> 1)])) {
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$cursor->refIndex = $refs[$r] = $cursor->refIndex ?: ++$refs[0];
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} else {
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$firstSeen = false;
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}
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$cursor->hardRefTo = $refs[$r];
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$cursor->hardRefHandle = $this->useRefHandles & $item->handle;
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$cursor->hardRefCount = $item->refCount;
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}
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$cursor->attr = $item->attr;
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$type = $item->class ?: gettype($item->value);
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$item = $item->value;
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}
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if ($item instanceof Stub) {
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if ($item->refCount) {
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if (!isset($refs[$r = $item->handle])) {
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$cursor->refIndex = $refs[$r] = $cursor->refIndex ?: ++$refs[0];
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} else {
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$firstSeen = false;
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}
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$cursor->softRefTo = $refs[$r];
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}
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$cursor->softRefHandle = $this->useRefHandles & $item->handle;
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$cursor->softRefCount = $item->refCount;
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$cursor->attr = $item->attr;
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$cut = $item->cut;
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if ($item->position && $firstSeen) {
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$children = $this->data[$item->position];
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if ($cursor->stop) {
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if ($cut >= 0) {
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$cut += count($children);
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}
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$children = array();
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}
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} else {
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$children = array();
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}
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switch ($item->type) {
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case Stub::TYPE_STRING:
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$dumper->dumpString($cursor, $item->value, Stub::STRING_BINARY === $item->class, $cut);
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break;
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case Stub::TYPE_ARRAY:
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$item = clone $item;
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$item->type = $item->class;
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$item->class = $item->value;
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// No break;
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case Stub::TYPE_OBJECT:
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case Stub::TYPE_RESOURCE:
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$withChildren = $children && $cursor->depth !== $this->maxDepth && $this->maxItemsPerDepth;
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$dumper->enterHash($cursor, $item->type, $item->class, $withChildren);
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if ($withChildren) {
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$cut = $this->dumpChildren($dumper, $cursor, $refs, $children, $cut, $item->type, null !== $item->class);
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} elseif ($children && 0 <= $cut) {
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$cut += count($children);
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}
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$dumper->leaveHash($cursor, $item->type, $item->class, $withChildren, $cut);
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break;
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default:
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throw new \RuntimeException(sprintf('Unexpected Stub type: %s', $item->type));
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}
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} elseif ('array' === $type) {
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$dumper->enterHash($cursor, Cursor::HASH_INDEXED, 0, false);
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$dumper->leaveHash($cursor, Cursor::HASH_INDEXED, 0, false, 0);
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} elseif ('string' === $type) {
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$dumper->dumpString($cursor, $item, false, 0);
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} else {
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$dumper->dumpScalar($cursor, $type, $item);
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}
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}
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/**
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* Dumps children of hash structures.
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*
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* @param DumperInterface $dumper
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* @param Cursor $parentCursor The cursor of the parent hash
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* @param array &$refs A map of all references discovered while dumping
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* @param array $children The children to dump
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* @param int $hashCut The number of items removed from the original hash
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* @param string $hashType A Cursor::HASH_* const
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* @param bool $dumpKeys Whether keys should be dumped or not
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*
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* @return int The final number of removed items
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*/
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private function dumpChildren($dumper, $parentCursor, &$refs, $children, $hashCut, $hashType, $dumpKeys)
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{
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$cursor = clone $parentCursor;
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++$cursor->depth;
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$cursor->hashType = $hashType;
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$cursor->hashIndex = 0;
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$cursor->hashLength = count($children);
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$cursor->hashCut = $hashCut;
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foreach ($children as $key => $child) {
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$cursor->hashKeyIsBinary = isset($key[0]) && !preg_match('//u', $key);
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$cursor->hashKey = $dumpKeys ? $key : null;
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$this->dumpItem($dumper, $cursor, $refs, $child);
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if (++$cursor->hashIndex === $this->maxItemsPerDepth || $cursor->stop) {
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$parentCursor->stop = true;
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return $hashCut >= 0 ? $hashCut + $cursor->hashLength - $cursor->hashIndex : $hashCut;
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}
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}
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return $hashCut;
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}
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}
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