1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
<?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 Data
{
private $data;
private $maxDepth = 20;
private $maxItemsPerDepth = -1;
private $useRefHandles = -1;
/**
* @param array $data A array as returned by ClonerInterface::cloneVar()
*/
public function __construct(array $data)
{
$this->data = $data;
}
/**
* @return array The raw data structure
*/
public function getRawData()
{
return $this->data;
}
/**
* Returns a depth limited clone of $this.
*
* @param int $maxDepth The max dumped depth level
*
* @return self A clone of $this
*/
public function withMaxDepth($maxDepth)
{
$data = clone $this;
$data->maxDepth = (int) $maxDepth;
return $data;
}
/**
* Limits the number of elements per depth level.
*
* @param int $maxItemsPerDepth The max number of items dumped per depth level
*
* @return self A clone of $this
*/
public function withMaxItemsPerDepth($maxItemsPerDepth)
{
$data = clone $this;
$data->maxItemsPerDepth = (int) $maxItemsPerDepth;
return $data;
}
/**
* Enables/disables objects' identifiers tracking.
*
* @param bool $useRefHandles False to hide global ref. handles
*
* @return self A clone of $this
*/
public function withRefHandles($useRefHandles)
{
$data = clone $this;
$data->useRefHandles = $useRefHandles ? -1 : 0;
return $data;
}
/**
* Dumps data with a DumperInterface dumper.
*/
public function dump(DumperInterface $dumper)
{
$refs = array(0);
$this->dumpItem($dumper, new Cursor(), $refs, $this->data[0][0]);
}
/**
* Depth-first dumping of items.
*
* @param DumperInterface $dumper The dumper being used for dumping
* @param Cursor $cursor A cursor used for tracking dumper state position
* @param array &$refs A map of all references discovered while dumping
* @param mixed $item A Stub object or the original value being dumped
*/
private function dumpItem($dumper, $cursor, &$refs, $item)
{
$cursor->refIndex = 0;
$cursor->softRefTo = $cursor->softRefHandle = $cursor->softRefCount = 0;
$cursor->hardRefTo = $cursor->hardRefHandle = $cursor->hardRefCount = 0;
$firstSeen = true;
if (!$item instanceof Stub) {
$type = gettype($item);
} elseif (Stub::TYPE_REF === $item->type) {
if ($item->handle) {
if (!isset($refs[$r = $item->handle - (PHP_INT_MAX >> 1)])) {
$cursor->refIndex = $refs[$r] = $cursor->refIndex ?: ++$refs[0];
} else {
$firstSeen = false;
}
$cursor->hardRefTo = $refs[$r];
$cursor->hardRefHandle = $this->useRefHandles & $item->handle;
$cursor->hardRefCount = $item->refCount;
}
$type = $item->class ?: gettype($item->value);
$item = $item->value;
}
if ($item instanceof Stub) {
if ($item->refCount) {
if (!isset($refs[$r = $item->handle])) {
$cursor->refIndex = $refs[$r] = $cursor->refIndex ?: ++$refs[0];
} else {
$firstSeen = false;
}
$cursor->softRefTo = $refs[$r];
}
$cursor->softRefHandle = $this->useRefHandles & $item->handle;
$cursor->softRefCount = $item->refCount;
$cut = $item->cut;
if ($item->position && $firstSeen) {
$children = $this->data[$item->position];
if ($cursor->stop) {
if ($cut >= 0) {
$cut += count($children);
}
$children = array();
}
} else {
$children = array();
}
switch ($item->type) {
case Stub::TYPE_STRING:
$dumper->dumpString($cursor, $item->value, Stub::STRING_BINARY === $item->class, $cut);
break;
case Stub::TYPE_ARRAY:
$item = clone $item;
$item->type = $item->class;
$item->class = $item->value;
// No break;
case Stub::TYPE_OBJECT:
case Stub::TYPE_RESOURCE:
$withChildren = $children && $cursor->depth !== $this->maxDepth && $this->maxItemsPerDepth;
$dumper->enterHash($cursor, $item->type, $item->class, $withChildren);
if ($withChildren) {
$cut = $this->dumpChildren($dumper, $cursor, $refs, $children, $cut, $item->type);
} elseif ($children && 0 <= $cut) {
$cut += count($children);
}
$dumper->leaveHash($cursor, $item->type, $item->class, $withChildren, $cut);
break;
default:
throw new \RuntimeException(sprintf('Unexpected Stub type: %s', $item->type));
}
} elseif ('array' === $type) {
$dumper->enterHash($cursor, Cursor::HASH_INDEXED, 0, false);
$dumper->leaveHash($cursor, Cursor::HASH_INDEXED, 0, false, 0);
} elseif ('string' === $type) {
$dumper->dumpString($cursor, $item, false, 0);
} else {
$dumper->dumpScalar($cursor, $type, $item);
}
}
/**
* Dumps children of hash structures.
*
* @param DumperInterface $dumper
* @param Cursor $parentCursor The cursor of the parent hash
* @param array &$refs A map of all references discovered while dumping
* @param array $children The children to dump
* @param int $hashCut The number of items removed from the original hash
* @param string $hashType A Cursor::HASH_* const
*
* @return int The final number of removed items
*/
private function dumpChildren($dumper, $parentCursor, &$refs, $children, $hashCut, $hashType)
{
$cursor = clone $parentCursor;
++$cursor->depth;
$cursor->hashType = $hashType;
$cursor->hashIndex = 0;
$cursor->hashLength = count($children);
$cursor->hashCut = $hashCut;
foreach ($children as $key => $child) {
$cursor->hashKeyIsBinary = isset($key[0]) && !preg_match('//u', $key);
$cursor->hashKey = $key;
$this->dumpItem($dumper, $cursor, $refs, $child);
if (++$cursor->hashIndex === $this->maxItemsPerDepth || $cursor->stop) {
$parentCursor->stop = true;
return $hashCut >= 0 ? $hashCut + $cursor->hashLength - $cursor->hashIndex : $hashCut;
}
}
return $hashCut;
}
}