mirror of
https://github.com/pierre42100/comunic
synced 2025-09-20 22:39:16 +00:00
First commit
This commit is contained in:
Pierre Hubert
326
developer/vendor/symfony/var-dumper/Cloner/VarCloner.php
vendored
Normal file
326
developer/vendor/symfony/var-dumper/Cloner/VarCloner.php
vendored
Normal file
@@ -0,0 +1,326 @@
|
||||
<?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\VarDumper\Cloner;
|
||||
|
||||
/**
|
||||
* @author Nicolas Grekas <p@tchwork.com>
|
||||
*/
|
||||
class VarCloner extends AbstractCloner
|
||||
{
|
||||
private static $hashMask = 0;
|
||||
private static $hashOffset = 0;
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
protected function doClone($var)
|
||||
{
|
||||
$useExt = $this->useExt;
|
||||
$len = 1; // Length of $queue
|
||||
$pos = 0; // Number of cloned items past the first level
|
||||
$refsCounter = 0; // Hard references counter
|
||||
$queue = array(array($var)); // This breadth-first queue is the return value
|
||||
$arrayRefs = array(); // Map of queue indexes to stub array objects
|
||||
$hardRefs = array(); // Map of original zval hashes to stub objects
|
||||
$objRefs = array(); // Map of original object handles to their stub object couterpart
|
||||
$resRefs = array(); // Map of original resource handles to their stub object couterpart
|
||||
$values = array(); // Map of stub objects' hashes to original values
|
||||
$maxItems = $this->maxItems;
|
||||
$maxString = $this->maxString;
|
||||
$cookie = (object) array(); // Unique object used to detect hard references
|
||||
$gid = uniqid(mt_rand(), true); // Unique string used to detect the special $GLOBALS variable
|
||||
$a = null; // Array cast for nested structures
|
||||
$stub = null; // Stub capturing the main properties of an original item value
|
||||
// or null if the original value is used directly
|
||||
$zval = array( // Main properties of the current value
|
||||
'type' => null,
|
||||
'zval_isref' => null,
|
||||
'zval_hash' => null,
|
||||
'array_count' => null,
|
||||
'object_class' => null,
|
||||
'object_handle' => null,
|
||||
'resource_type' => null,
|
||||
);
|
||||
if (!self::$hashMask) {
|
||||
self::initHashMask();
|
||||
}
|
||||
$hashMask = self::$hashMask;
|
||||
$hashOffset = self::$hashOffset;
|
||||
|
||||
for ($i = 0; $i < $len; ++$i) {
|
||||
$indexed = true; // Whether the currently iterated array is numerically indexed or not
|
||||
$j = -1; // Position in the currently iterated array
|
||||
$fromObjCast = array_keys($queue[$i]);
|
||||
$fromObjCast = array_keys(array_flip($fromObjCast)) !== $fromObjCast;
|
||||
$refs = $vals = $fromObjCast ? array_values($queue[$i]) : $queue[$i];
|
||||
foreach ($queue[$i] as $k => $v) {
|
||||
// $k is the original key
|
||||
// $v is the original value or a stub object in case of hard references
|
||||
if ($k !== ++$j) {
|
||||
$indexed = false;
|
||||
}
|
||||
if ($fromObjCast) {
|
||||
$k = $j;
|
||||
}
|
||||
if ($useExt) {
|
||||
$zval = symfony_zval_info($k, $refs);
|
||||
} else {
|
||||
$refs[$k] = $cookie;
|
||||
if ($zval['zval_isref'] = $vals[$k] === $cookie) {
|
||||
$zval['zval_hash'] = $v instanceof Stub ? spl_object_hash($v) : null;
|
||||
}
|
||||
$zval['type'] = gettype($v);
|
||||
}
|
||||
if ($zval['zval_isref']) {
|
||||
$vals[$k] = &$stub; // Break hard references to make $queue completely
|
||||
unset($stub); // independent from the original structure
|
||||
if (isset($hardRefs[$zval['zval_hash']])) {
|
||||
$vals[$k] = $useExt ? ($v = $hardRefs[$zval['zval_hash']]) : ($refs[$k] = $v);
|
||||
if ($v->value instanceof Stub && (Stub::TYPE_OBJECT === $v->value->type || Stub::TYPE_RESOURCE === $v->value->type)) {
|
||||
++$v->value->refCount;
|
||||
}
|
||||
++$v->refCount;
|
||||
continue;
|
||||
}
|
||||
}
|
||||
// Create $stub when the original value $v can not be used directly
|
||||
// If $v is a nested structure, put that structure in array $a
|
||||
switch ($zval['type']) {
|
||||
case 'string':
|
||||
if (isset($v[0]) && !preg_match('//u', $v)) {
|
||||
$stub = new Stub();
|
||||
$stub->type = Stub::TYPE_STRING;
|
||||
$stub->class = Stub::STRING_BINARY;
|
||||
if (0 <= $maxString && 0 < $cut = strlen($v) - $maxString) {
|
||||
$stub->cut = $cut;
|
||||
$stub->value = substr($v, 0, -$cut);
|
||||
} else {
|
||||
$stub->value = $v;
|
||||
}
|
||||
} elseif (0 <= $maxString && isset($v[1 + ($maxString >> 2)]) && 0 < $cut = mb_strlen($v, 'UTF-8') - $maxString) {
|
||||
$stub = new Stub();
|
||||
$stub->type = Stub::TYPE_STRING;
|
||||
$stub->class = Stub::STRING_UTF8;
|
||||
$stub->cut = $cut;
|
||||
$stub->value = mb_substr($v, 0, $maxString, 'UTF-8');
|
||||
}
|
||||
break;
|
||||
|
||||
case 'integer':
|
||||
break;
|
||||
|
||||
case 'array':
|
||||
if ($v) {
|
||||
$stub = $arrayRefs[$len] = new Stub();
|
||||
$stub->type = Stub::TYPE_ARRAY;
|
||||
$stub->class = Stub::ARRAY_ASSOC;
|
||||
|
||||
// Copies of $GLOBALS have very strange behavior,
|
||||
// let's detect them with some black magic
|
||||
$a = $v;
|
||||
$a[$gid] = true;
|
||||
|
||||
// Happens with copies of $GLOBALS
|
||||
if (isset($v[$gid])) {
|
||||
unset($v[$gid]);
|
||||
$a = array();
|
||||
foreach ($v as $gk => &$gv) {
|
||||
$a[$gk] = &$gv;
|
||||
}
|
||||
} else {
|
||||
$a = $v;
|
||||
}
|
||||
|
||||
$stub->value = $zval['array_count'] ?: count($a);
|
||||
}
|
||||
break;
|
||||
|
||||
case 'object':
|
||||
if (empty($objRefs[$h = $zval['object_handle'] ?: ($hashMask ^ hexdec(substr(spl_object_hash($v), $hashOffset, PHP_INT_SIZE)))])) {
|
||||
$stub = new Stub();
|
||||
$stub->type = Stub::TYPE_OBJECT;
|
||||
$stub->class = $zval['object_class'] ?: get_class($v);
|
||||
$stub->value = $v;
|
||||
$stub->handle = $h;
|
||||
$a = $this->castObject($stub, 0 < $i);
|
||||
if ($v !== $stub->value) {
|
||||
if (Stub::TYPE_OBJECT !== $stub->type || null === $stub->value) {
|
||||
break;
|
||||
}
|
||||
if ($useExt) {
|
||||
$zval['type'] = $stub->value;
|
||||
$zval = symfony_zval_info('type', $zval);
|
||||
$h = $zval['object_handle'];
|
||||
} else {
|
||||
$h = $hashMask ^ hexdec(substr(spl_object_hash($stub->value), $hashOffset, PHP_INT_SIZE));
|
||||
}
|
||||
$stub->handle = $h;
|
||||
}
|
||||
$stub->value = null;
|
||||
if (0 <= $maxItems && $maxItems <= $pos) {
|
||||
$stub->cut = count($a);
|
||||
$a = null;
|
||||
}
|
||||
}
|
||||
if (empty($objRefs[$h])) {
|
||||
$objRefs[$h] = $stub;
|
||||
} else {
|
||||
$stub = $objRefs[$h];
|
||||
++$stub->refCount;
|
||||
$a = null;
|
||||
}
|
||||
break;
|
||||
|
||||
case 'resource':
|
||||
case 'unknown type':
|
||||
case 'resource (closed)':
|
||||
if (empty($resRefs[$h = (int) $v])) {
|
||||
$stub = new Stub();
|
||||
$stub->type = Stub::TYPE_RESOURCE;
|
||||
if ('Unknown' === $stub->class = $zval['resource_type'] ?: @get_resource_type($v)) {
|
||||
$stub->class = 'Closed';
|
||||
}
|
||||
$stub->value = $v;
|
||||
$stub->handle = $h;
|
||||
$a = $this->castResource($stub, 0 < $i);
|
||||
$stub->value = null;
|
||||
if (0 <= $maxItems && $maxItems <= $pos) {
|
||||
$stub->cut = count($a);
|
||||
$a = null;
|
||||
}
|
||||
}
|
||||
if (empty($resRefs[$h])) {
|
||||
$resRefs[$h] = $stub;
|
||||
} else {
|
||||
$stub = $resRefs[$h];
|
||||
++$stub->refCount;
|
||||
$a = null;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
if (isset($stub)) {
|
||||
if ($zval['zval_isref']) {
|
||||
if ($useExt) {
|
||||
$vals[$k] = $hardRefs[$zval['zval_hash']] = $v = new Stub();
|
||||
$v->value = $stub;
|
||||
} else {
|
||||
$refs[$k] = new Stub();
|
||||
$refs[$k]->value = $stub;
|
||||
$h = spl_object_hash($refs[$k]);
|
||||
$vals[$k] = $hardRefs[$h] = &$refs[$k];
|
||||
$values[$h] = $v;
|
||||
}
|
||||
$vals[$k]->handle = ++$refsCounter;
|
||||
} else {
|
||||
$vals[$k] = $stub;
|
||||
}
|
||||
|
||||
if ($a) {
|
||||
if ($i && 0 <= $maxItems) {
|
||||
$k = count($a);
|
||||
if ($pos < $maxItems) {
|
||||
if ($maxItems < $pos += $k) {
|
||||
$a = array_slice($a, 0, $maxItems - $pos);
|
||||
if ($stub->cut >= 0) {
|
||||
$stub->cut += $pos - $maxItems;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if ($stub->cut >= 0) {
|
||||
$stub->cut += $k;
|
||||
}
|
||||
$stub = $a = null;
|
||||
unset($arrayRefs[$len]);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
$queue[$len] = $a;
|
||||
$stub->position = $len++;
|
||||
}
|
||||
$stub = $a = null;
|
||||
} elseif ($zval['zval_isref']) {
|
||||
if ($useExt) {
|
||||
$vals[$k] = $hardRefs[$zval['zval_hash']] = new Stub();
|
||||
$vals[$k]->value = $v;
|
||||
} else {
|
||||
$refs[$k] = $vals[$k] = new Stub();
|
||||
$refs[$k]->value = $v;
|
||||
$h = spl_object_hash($refs[$k]);
|
||||
$hardRefs[$h] = &$refs[$k];
|
||||
$values[$h] = $v;
|
||||
}
|
||||
$vals[$k]->handle = ++$refsCounter;
|
||||
}
|
||||
}
|
||||
|
||||
if ($fromObjCast) {
|
||||
$refs = $vals;
|
||||
$vals = array();
|
||||
$j = -1;
|
||||
foreach ($queue[$i] as $k => $v) {
|
||||
foreach (array($k => $v) as $a => $v) {
|
||||
}
|
||||
if ($a !== $k) {
|
||||
$vals = (object) $vals;
|
||||
$vals->{$k} = $refs[++$j];
|
||||
$vals = (array) $vals;
|
||||
} else {
|
||||
$vals[$k] = $refs[++$j];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
$queue[$i] = $vals;
|
||||
|
||||
if (isset($arrayRefs[$i])) {
|
||||
if ($indexed) {
|
||||
$arrayRefs[$i]->class = Stub::ARRAY_INDEXED;
|
||||
}
|
||||
unset($arrayRefs[$i]);
|
||||
}
|
||||
}
|
||||
|
||||
foreach ($values as $h => $v) {
|
||||
$hardRefs[$h] = $v;
|
||||
}
|
||||
|
||||
return $queue;
|
||||
}
|
||||
|
||||
private static function initHashMask()
|
||||
{
|
||||
$obj = (object) array();
|
||||
self::$hashOffset = 16 - PHP_INT_SIZE;
|
||||
self::$hashMask = -1;
|
||||
|
||||
if (defined('HHVM_VERSION')) {
|
||||
self::$hashOffset += 16;
|
||||
} else {
|
||||
// check if we are nested in an output buffering handler to prevent a fatal error with ob_start() below
|
||||
$obFuncs = array('ob_clean', 'ob_end_clean', 'ob_flush', 'ob_end_flush', 'ob_get_contents', 'ob_get_flush');
|
||||
foreach (debug_backtrace(PHP_VERSION_ID >= 50400 ? DEBUG_BACKTRACE_IGNORE_ARGS : false) as $frame) {
|
||||
if (isset($frame['function'][0]) && !isset($frame['class']) && 'o' === $frame['function'][0] && in_array($frame['function'], $obFuncs)) {
|
||||
$frame['line'] = 0;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (!empty($frame['line'])) {
|
||||
ob_start();
|
||||
debug_zval_dump($obj);
|
||||
self::$hashMask = (int) substr(ob_get_clean(), 17);
|
||||
}
|
||||
}
|
||||
|
||||
self::$hashMask ^= hexdec(substr(spl_object_hash($obj), self::$hashOffset, PHP_INT_SIZE));
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user