Document::__construct() - Code Metrics - Inspection of "Apply scrutinizer fixes" - Bacon/BaconPdf - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 655053...db47c8 )

by Ben

created 2015-11-26 02:04 UTC

Document::__construct() A

↳ Parent: Document

Complexity

Conditions	1
Paths	1

Size

Total Lines	22
Code Lines	16

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	1	Features	0

Metric	Value
c	2
b	1
f	0
dl	0
loc	22
rs	9.2
cc	1
eloc	16
nc	1
nop	0

<?php
/**
 * BaconPdf
 *
 * @link      http://github.com/Bacon/BaconPdf For the canonical source repository
 * @copyright 2015 Ben 'DASPRiD' Scholzen
 * @license   http://opensource.org/licenses/BSD-2-Clause Simplified BSD License
 */

namespace Bacon\Pdf;

use Bacon\Pdf\Object\ArrayObject;
use Bacon\Pdf\Object\DictionaryObject;
use Bacon\Pdf\Object\HexadecimalStringObject;
use Bacon\Pdf\Object\IndirectObject;
use Bacon\Pdf\Object\LiteralStringObject;
use Bacon\Pdf\Object\NameObject;
use Bacon\Pdf\Object\NumericObject;
use Bacon\Pdf\Object\ObjectInterface;
use Bacon\Pdf\Object\ObjectStorage;
use Bacon\Pdf\Object\StreamObject;
use Bacon\Pdf\Utils\EncryptionUtils;
use Doctrine\Instantiator\Exception\UnexpectedValueException;
use SplFileObject;
use SplObjectStorage;

class Document
{
    const HEADER = '%PDF-1.7';

    /**
     * @var ObjectStorage
     */
    private $objects;

    /**
     * @var IndirectObject
     */
    private $pages;

    /**
     * @var IndirectObject
     */
    private $info;

    /**
     * @var IndirectObject
     */
    private $root;

    /**
     * @var IndirectObject|null
     */
    private $encrypt;

    /**
     * @var string<null
     */
    private $encryptionKey;

    /**
     * @var HexadecimalStringObject
     */
    private $firstId;

    /**
     * @var HexadecimalStringObject
     */
    private $secondId;

    /**
     * Creates a new PDF document.
     */
    public function __construct()
    {
        $this->objects = new ObjectStorage();

        $pages = new DictionaryObject();
        $pages['Type'] = new NameObject('Pages');
        $pages['Count'] = new NumericObject(0);
        $pages['Kids'] = new ArrayObject();
        $this->pages = $this->objects->addObject($pages);

        $info = new DictionaryObject();
        $info['Producer'] = new LiteralStringObject('BaconPdf');
        $this->info = $this->objects->addObject($info);

        $root = new DictionaryObject();
        $root['Type'] = new NameObject('Catalog');
        $root['Pages'] = $this->pages;
        $this->root = $this->objects->addObject($root);

        $this->firstId  = new HexadecimalStringObject($this->generateFileIdentifier());
        $this->secondId = new HexadecimalStringObject($this->generateFileIdentifier());
    }

    /**
     * Enables encryption for the document.
     *
     * @param string      $userPassword
     * @param string|null $ownerPassword
     * @param bool        $use128bit
     */
    public function enableEncryption($userPassword, $ownerPassword = null, $use128bit = true)
    {
        if (null === $ownerPassword) {
            $ownerPassword = $userPassword;
        }

        if ($use128bit) {
            $algorithm = 2;
            $revision  = 3;
            $keyLength = 128 / 8;
        } else {
            $algorithm = 1;
            $revision  = 2;
            $keyLength = 40 / 8;
        }

        $permissions = -1;
        $ownerEntry  = EncryptionUtils::computeOwnerEntry($ownerPassword, $userPassword, $revision, $keyLength);

        if (2 === $revision) {
            list($userEntry, $key) = EncryptionUtils::computeUserEntryRev2(
                $userPassword,
                $ownerEntry,
                $revision,
                $this->firstId->getValue()

            );
        } else {
            list($userEntry, $key) = EncryptionUtils::computeUserEntryRev3OrGreater(
                $userPassword,
                $revision,
                $keyLength,
                $ownerEntry,
                $permissions,
                $this->firstId->getValue()

            );
        }

        $encrypt = new DictionaryObject();
        $encrypt['Filter'] = new NameObject('Standard');
        $encrypt['V'] = new NumericObject($algorithm);

        if (2 === $algorithm) {
            $encrypt['Length'] = new NumericObject($keyLength * 8);
        }

        $encrypt['R'] = new NumericObject($revision);
        $encrypt['O'] = new HexadecimalStringObject($ownerEntry);
        $encrypt['U'] = new HexadecimalStringObject($userEntry);
        $encrypt['P'] = new NumericObject($permissions);

        $this->encrypt = $this->objects->addObject($encrypt);
        $this->encryptionKey = $key;
    }

    /**
     * Writes the document to a file object.
     *
     * @param SplFileObject $fileObject
     */
    public function write(SplFileObject $fileObject)
    {
        $this->resolveCircularReferences();
        $this->writeHeader($fileObject);

        $objectOffsets = $this->writeObjects($fileObject);
        $xrefOffset    = $fileObject->ftell();

        $this->writeXrefTable($fileObject, $objectOffsets);
        $this->writeTrailer($fileObject);
        $this->writeFooter($fileObject, $xrefOffset);
    }

    /**
     * Writes the document to a file.
     *
     * @param string $filename
     */
    public function writeToFile($filename)
    {
        $this->write(new SplFileObject($filename, 'wb'));
    }

    /**
     * Outputs to document directly.
     */
    public function output()
    {
        $this->write(new SplFileObject('php://stdout', 'wb'));
    }

    /**
     * Returns the document as a string.
     *
     * @return string
     */
    public function toString()
    {
        $fileObject = new SplFileObject('php://memory', 'w+b');
        $this->write($fileObject);

        $fileObject->fseek(0, SEEK_END);
        $length = $fileObject->ftell();
        $fileObject->fseek(0);

        return $fileObject->fread($length);
    }

    /**
     * Resolves circular references in page objects.
     */
    private function resolveCircularReferences()
    {
        $externalReferenceMap = new SplObjectStorage();

        foreach ($this->objects as $id => $object) {
            if (!$object instanceof Page || null === $object->getIndirectReference()) {
                continue;
            }

            $indirectObject = $object->getIndirectReference();
            $objectStorage  = $indirectObject->getObjectStorage();
            $generation     = $indirectObject->getGeneration();

            if (!$externalReferenceMap->contains($objectStorage)) {
                $externalReferenceMap->attach($objectStorage, []);
            }

            if (!array_key_exists($generation, $externalReferenceMap[$objectStorage])) {
                $externalReferenceMap[$objectStorage][$generation] = [];
            }

            $externalReferenceMap[$objectStorage][$generation][$id] = new IndirectObject($id, 0, $this->objects);
        }

        $stack = [];
        $this->sweepIndirectReferences($externalReferenceMap, $this->root, $stack);
    }

    /**
     * @param  SplObjectStorage $externalReferenceMap
     * @param  ObjectInterface  $object
     * @param  array            $stack
     * @return ObjectInterface
     */
    private function sweepIndirectReferences(
        SplObjectStorage $externalReferenceMap,
        ObjectInterface $object,
        array &$stack
    ) {
        if ($object instanceof DictionaryObject || $object instanceof ArrayObject) {
            foreach ($object as $index => $childObject) {
                $childObject = $this->sweepIndirectReferences($externalReferenceMap, $childObject, $stack);

                if ($childObject instanceof StreamObject) {
                    $childObject = $this->objects->addObject($childObject);
                }

                $object[$index] = $childObject;
            }

            return $object;
        }

        if ($object instanceof IndirectObject) {
            $objectStorage = $object->getObjectStorage();

            if ($objectStorage === $this->objects) {
                if (in_array($object->getId(), $stack)) {
                    return $object;
                }

                $stack[] = $object->getId();
                $this->sweepIndirectReferences($externalReferenceMap, $this->objects->getObject($object), $stack);

                return $object;
            }

            $id         = $object->getId();
            $generation = $object->getGeneration();

            if (!$externalReferenceMap->contains($objectStorage)) {
                $externalReferenceMap->attach($objectStorage, []);
            }

            $map = $externalReferenceMap[$objectStorage];

            if (isset($externalReferenceMap[$objectStorage][$generation][$id])) {
                return $map[$generation][$id];
            }

            $newObject         = $objectStorage->getObject($object);
            $newId             = $this->objects->reserveSlot();
            $newIndirectObject = new IndirectObject($newId, 0, $this->objects);

            if (!array_key_exists($generation, $externalReferenceMap[$objectStorage])) {
                $externalReferenceMap[$objectStorage][$generation] = [];
            }

            $externalReferenceMap[$objectStorage][$generation][$id] = $newIndirectObject;
            $sweepedIndirectObject = $this->sweepIndirectReferences($externalReferenceMap, $newObject, $stack);

            if (!$sweepedIndirectObject instanceof IndirectObject) {
                throw new UnexpectedValueException(sprintf(
                    'Expected sweeped object to be of type %s, got %s',
                    IndirectObject::class,
                    get_class($sweepedIndirectObject)
                ));
            }

            $this->objects->fillSlot($sweepedIndirectObject);

            return $newIndirectObject;
        }

        return $object;
    }

    /**
     * Writes the file header.
     *
     * @param SplFileObject $fileObject
     */
    private function writeHeader(SplFileObject $fileObject)
    {
        $fileObject->fwrite(static::HEADER . "\n");
        $fileObject->fwrite("%\xff\xff\xff\xff\n");
    }

    /**
     * Writes all objects.
     *
     * @param  SplFileObject $fileObject
     * @return array
     */
    private function writeObjects(SplFileObject $fileObject)
    {
        $objectOffsets = [];

        foreach ($this->objects as $object) {
            $indirectObject = $this->objects->getIndirectObject($object);
            $id = $indirectObject->getId();
            $objectOffsets[] = $fileObject->ftell();
            $fileObject->fwrite(sprintf("%d 0 obj\n", $id));

            $key = null;

            if (null !== $this->encrypt && $id !== $this->encrypt->getId()) {
                $key = substr(hex2bin(md5(
                    $this->encryptionKey
                    . substr(pack('V', $id), 0, 3)
                    . substr(pack('V', $indirectObject->getGeneration()), 0, 2)
                )), 0, min(16, strlen($this->encryptionKey) + 5));
            }

            $object->writeToStream($fileObject, $key);
            $fileObject->fwrite("\nendobj\n");
        }

        return $objectOffsets;
    }

    /**
     * Writes the xref table.
     *
     * @param SplFileObject $fileObject
     * @param array         $objectOffsets
     */
    private function writeXrefTable(SplFileObject $fileObject, array $objectOffsets)
    {
        $fileObject->fwrite("xref\n");
        $fileObject->fwrite(sprintf("0 %d\n", count($this->objects) + 1));
        $fileObject->fwrite(sprintf("%010d %05d f \n", 0, 65535));

        foreach ($objectOffsets as $offset) {
            $fileObject->fwrite(sprintf("%010d %05d n \n", $offset, 0));
        }
    }

    /**
     * Writes the trailer.
     *
     * @param SplFileObject $fileObject
     */
    private function writeTrailer(SplFileObject $fileObject)
    {
        $fileObject->fwrite("trailer\n");
        $trailer = new DictionaryObject();
        $trailer['Size'] = new NumericObject(count($this->objects) + 1);
        $trailer['Root'] = $this->root;
        $trailer['Info'] = $this->info;
        $trailer['Id'] = new ArrayObject([$this->firstId, $this->secondId]);
        $trailer->writeToStream($fileObject);

    }

    /**
     * Writes the file footer.
     *
     * @param SplFileObject $fileObject
     * @param int           $xrefOffset
     */
    private function writeFooter(SplFileObject $fileObject, $xrefOffset)
    {
        $fileObject->fwrite("\n");
        $fileObject->fwrite("startxref\n");
        $fileObject->fwrite(sprintf("%d\n", $xrefOffset));
        $fileObject->fwrite("%%%EOF\n");
    }

    /**
     * Computes a file identifier.
     *
     * @return string
     */
    private function generateFileIdentifier()
    {
        return hex2bin(md5(microtime()));
    }
}


1			<?php
2			/**
3			* BaconPdf
4			*
5			* @link http://github.com/Bacon/BaconPdf For the canonical source repository
6			* @copyright 2015 Ben 'DASPRiD' Scholzen
7			* @license http://opensource.org/licenses/BSD-2-Clause Simplified BSD License
8			*/
9
10			namespace Bacon\Pdf;
11
12			use Bacon\Pdf\Object\ArrayObject;
13			use Bacon\Pdf\Object\DictionaryObject;
14			use Bacon\Pdf\Object\HexadecimalStringObject;
15			use Bacon\Pdf\Object\IndirectObject;
16			use Bacon\Pdf\Object\LiteralStringObject;
17			use Bacon\Pdf\Object\NameObject;
18			use Bacon\Pdf\Object\NumericObject;
19			use Bacon\Pdf\Object\ObjectInterface;
20			use Bacon\Pdf\Object\ObjectStorage;
21			use Bacon\Pdf\Object\StreamObject;
22			use Bacon\Pdf\Utils\EncryptionUtils;
23			use Doctrine\Instantiator\Exception\UnexpectedValueException;
24			use SplFileObject;
25			use SplObjectStorage;
26
27			class Document
28			{
29			const HEADER = '%PDF-1.7';
30
31			/**
32			* @var ObjectStorage
33			*/
34			private $objects;
35
36			/**
37			* @var IndirectObject
38			*/
39			private $pages;
40
41			/**
42			* @var IndirectObject
43			*/
44			private $info;
45
46			/**
47			* @var IndirectObject
48			*/
49			private $root;
50
51			/**
52			* @var IndirectObject\|null
53			*/
54			private $encrypt;
55
56			/**
57			* @var string<null
58			*/
59			private $encryptionKey;
60
61			/**
62			* @var HexadecimalStringObject
63			*/
64			private $firstId;
65
66			/**
67			* @var HexadecimalStringObject
68			*/
69			private $secondId;
70
71			/**
72			* Creates a new PDF document.
73			*/
74			public function __construct()
75			{
76			$this->objects = new ObjectStorage();
77
78			$pages = new DictionaryObject();
79			$pages['Type'] = new NameObject('Pages');
80			$pages['Count'] = new NumericObject(0);
81			$pages['Kids'] = new ArrayObject();
82			$this->pages = $this->objects->addObject($pages);
83
84			$info = new DictionaryObject();
85			$info['Producer'] = new LiteralStringObject('BaconPdf');
86			$this->info = $this->objects->addObject($info);
87
88			$root = new DictionaryObject();
89			$root['Type'] = new NameObject('Catalog');
90			$root['Pages'] = $this->pages;
91			$this->root = $this->objects->addObject($root);
92
93			$this->firstId = new HexadecimalStringObject($this->generateFileIdentifier());
94			$this->secondId = new HexadecimalStringObject($this->generateFileIdentifier());
95			}
96
97			/**
98			* Enables encryption for the document.
99			*
100			* @param string $userPassword
101			* @param string\|null $ownerPassword
102			* @param bool $use128bit
103			*/
104			public function enableEncryption($userPassword, $ownerPassword = null, $use128bit = true)
105			{
106			if (null === $ownerPassword) {
107			$ownerPassword = $userPassword;
108			}
109
110			if ($use128bit) {
111			$algorithm = 2;
112			$revision = 3;
113			$keyLength = 128 / 8;
114			} else {
115			$algorithm = 1;
116			$revision = 2;
117			$keyLength = 40 / 8;
118			}
119
120			$permissions = -1;
121			$ownerEntry = EncryptionUtils::computeOwnerEntry($ownerPassword, $userPassword, $revision, $keyLength);
122
123			if (2 === $revision) {
124			list($userEntry, $key) = EncryptionUtils::computeUserEntryRev2(
125			$userPassword,
126			$ownerEntry,
127			$revision,
128			$this->firstId->getValue()
			0 ignored issues – show Bug introduced 2015-11-26 02:06 UTC by Report Bug Copy Issue Report The method `getValue()` does not seem to exist on `object<Bacon\Pdf\Object\HexadecimalStringObject>`. This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces. This is most likely a typographical error or the method has been renamed. Loading history...
129			);
130			} else {
131			list($userEntry, $key) = EncryptionUtils::computeUserEntryRev3OrGreater(
132			$userPassword,
133			$revision,
134			$keyLength,
135			$ownerEntry,
136			$permissions,
137			$this->firstId->getValue()
			0 ignored issues – show Bug introduced 2015-11-26 02:06 UTC by Report Bug Copy Issue Report The method `getValue()` does not seem to exist on `object<Bacon\Pdf\Object\HexadecimalStringObject>`. This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces. This is most likely a typographical error or the method has been renamed. Loading history...
138			);
139			}
140
141			$encrypt = new DictionaryObject();
142			$encrypt['Filter'] = new NameObject('Standard');
143			$encrypt['V'] = new NumericObject($algorithm);
144
145			if (2 === $algorithm) {
146			$encrypt['Length'] = new NumericObject($keyLength * 8);
147			}
148
149			$encrypt['R'] = new NumericObject($revision);
150			$encrypt['O'] = new HexadecimalStringObject($ownerEntry);
151			$encrypt['U'] = new HexadecimalStringObject($userEntry);
152			$encrypt['P'] = new NumericObject($permissions);
153
154			$this->encrypt = $this->objects->addObject($encrypt);
155			$this->encryptionKey = $key;
156			}
157
158			/**
159			* Writes the document to a file object.
160			*
161			* @param SplFileObject $fileObject
162			*/
163			public function write(SplFileObject $fileObject)
164			{
165			$this->resolveCircularReferences();
166			$this->writeHeader($fileObject);
167
168			$objectOffsets = $this->writeObjects($fileObject);
169			$xrefOffset = $fileObject->ftell();
170
171			$this->writeXrefTable($fileObject, $objectOffsets);
172			$this->writeTrailer($fileObject);
173			$this->writeFooter($fileObject, $xrefOffset);
174			}
175
176			/**
177			* Writes the document to a file.
178			*
179			* @param string $filename
180			*/
181			public function writeToFile($filename)
182			{
183			$this->write(new SplFileObject($filename, 'wb'));
184			}
185
186			/**
187			* Outputs to document directly.
188			*/
189			public function output()
190			{
191			$this->write(new SplFileObject('php://stdout', 'wb'));
192			}
193
194			/**
195			* Returns the document as a string.
196			*
197			* @return string
198			*/
199			public function toString()
200			{
201			$fileObject = new SplFileObject('php://memory', 'w+b');
202			$this->write($fileObject);
203
204			$fileObject->fseek(0, SEEK_END);
205			$length = $fileObject->ftell();
206			$fileObject->fseek(0);
207
208			return $fileObject->fread($length);
209			}
210
211			/**
212			* Resolves circular references in page objects.
213			*/
214			private function resolveCircularReferences()
215			{
216			$externalReferenceMap = new SplObjectStorage();
217
218			foreach ($this->objects as $id => $object) {
219			if (!$object instanceof Page \|\| null === $object->getIndirectReference()) {
220			continue;
221			}
222
223			$indirectObject = $object->getIndirectReference();
224			$objectStorage = $indirectObject->getObjectStorage();
225			$generation = $indirectObject->getGeneration();
226
227			if (!$externalReferenceMap->contains($objectStorage)) {
228			$externalReferenceMap->attach($objectStorage, []);
229			}
230
231			if (!array_key_exists($generation, $externalReferenceMap[$objectStorage])) {
232			$externalReferenceMap[$objectStorage][$generation] = [];
233			}
234
235			$externalReferenceMap[$objectStorage][$generation][$id] = new IndirectObject($id, 0, $this->objects);
236			}
237
238			$stack = [];
239			$this->sweepIndirectReferences($externalReferenceMap, $this->root, $stack);
240			}
241
242			/**
243			* @param SplObjectStorage $externalReferenceMap
244			* @param ObjectInterface $object
245			* @param array $stack
246			* @return ObjectInterface
247			*/
248			private function sweepIndirectReferences(
249			SplObjectStorage $externalReferenceMap,
250			ObjectInterface $object,
251			array &$stack
252			) {
253			if ($object instanceof DictionaryObject \|\| $object instanceof ArrayObject) {
254			foreach ($object as $index => $childObject) {
255			$childObject = $this->sweepIndirectReferences($externalReferenceMap, $childObject, $stack);
256
257			if ($childObject instanceof StreamObject) {
258			$childObject = $this->objects->addObject($childObject);
259			}
260
261			$object[$index] = $childObject;
262			}
263
264			return $object;
265			}
266
267			if ($object instanceof IndirectObject) {
268			$objectStorage = $object->getObjectStorage();
269
270			if ($objectStorage === $this->objects) {
271			if (in_array($object->getId(), $stack)) {
272			return $object;
273			}
274
275			$stack[] = $object->getId();
276			$this->sweepIndirectReferences($externalReferenceMap, $this->objects->getObject($object), $stack);
277
278			return $object;
279			}
280
281			$id = $object->getId();
282			$generation = $object->getGeneration();
283
284			if (!$externalReferenceMap->contains($objectStorage)) {
285			$externalReferenceMap->attach($objectStorage, []);
286			}
287
288			$map = $externalReferenceMap[$objectStorage];
289
290			if (isset($externalReferenceMap[$objectStorage][$generation][$id])) {
291			return $map[$generation][$id];
292			}
293
294			$newObject = $objectStorage->getObject($object);
295			$newId = $this->objects->reserveSlot();
296			$newIndirectObject = new IndirectObject($newId, 0, $this->objects);
297
298			if (!array_key_exists($generation, $externalReferenceMap[$objectStorage])) {
299			$externalReferenceMap[$objectStorage][$generation] = [];
300			}
301
302			$externalReferenceMap[$objectStorage][$generation][$id] = $newIndirectObject;
303			$sweepedIndirectObject = $this->sweepIndirectReferences($externalReferenceMap, $newObject, $stack);
304
305			if (!$sweepedIndirectObject instanceof IndirectObject) {
306			throw new UnexpectedValueException(sprintf(
307			'Expected sweeped object to be of type %s, got %s',
308			IndirectObject::class,
309			get_class($sweepedIndirectObject)
310			));
311			}
312
313			$this->objects->fillSlot($sweepedIndirectObject);
314
315			return $newIndirectObject;
316			}
317
318			return $object;
319			}
320
321			/**
322			* Writes the file header.
323			*
324			* @param SplFileObject $fileObject
325			*/
326			private function writeHeader(SplFileObject $fileObject)
327			{
328			$fileObject->fwrite(static::HEADER . "\n");
329			$fileObject->fwrite("%\xff\xff\xff\xff\n");
330			}
331
332			/**
333			* Writes all objects.
334			*
335			* @param SplFileObject $fileObject
336			* @return array
337			*/
338			private function writeObjects(SplFileObject $fileObject)
339			{
340			$objectOffsets = [];
341
342			foreach ($this->objects as $object) {
343			$indirectObject = $this->objects->getIndirectObject($object);
344			$id = $indirectObject->getId();
345			$objectOffsets[] = $fileObject->ftell();
346			$fileObject->fwrite(sprintf("%d 0 obj\n", $id));
347
348			$key = null;
349
350			if (null !== $this->encrypt && $id !== $this->encrypt->getId()) {
351			$key = substr(hex2bin(md5(
352			$this->encryptionKey
353			. substr(pack('V', $id), 0, 3)
354			. substr(pack('V', $indirectObject->getGeneration()), 0, 2)
355			)), 0, min(16, strlen($this->encryptionKey) + 5));
356			}
357
358			$object->writeToStream($fileObject, $key);
359			$fileObject->fwrite("\nendobj\n");
360			}
361
362			return $objectOffsets;
363			}
364
365			/**
366			* Writes the xref table.
367			*
368			* @param SplFileObject $fileObject
369			* @param array $objectOffsets
370			*/
371			private function writeXrefTable(SplFileObject $fileObject, array $objectOffsets)
372			{
373			$fileObject->fwrite("xref\n");
374			$fileObject->fwrite(sprintf("0 %d\n", count($this->objects) + 1));
375			$fileObject->fwrite(sprintf("%010d %05d f \n", 0, 65535));
376
377			foreach ($objectOffsets as $offset) {
378			$fileObject->fwrite(sprintf("%010d %05d n \n", $offset, 0));
379			}
380			}
381
382			/**
383			* Writes the trailer.
384			*
385			* @param SplFileObject $fileObject
386			*/
387			private function writeTrailer(SplFileObject $fileObject)
388			{
389			$fileObject->fwrite("trailer\n");
390			$trailer = new DictionaryObject();
391			$trailer['Size'] = new NumericObject(count($this->objects) + 1);
392			$trailer['Root'] = $this->root;
393			$trailer['Info'] = $this->info;
394			$trailer['Id'] = new ArrayObject([$this->firstId, $this->secondId]);
395			$trailer->writeToStream($fileObject);
			0 ignored issues – show Bug introduced 2015-11-26 02:06 UTC by Report Bug Copy Issue Report The call to `writeToStream()` misses a required argument `$encryptionKey`. This check looks for function calls that miss required arguments. Loading history...
396			}
397
398			/**
399			* Writes the file footer.
400			*
401			* @param SplFileObject $fileObject
402			* @param int $xrefOffset
403			*/
404			private function writeFooter(SplFileObject $fileObject, $xrefOffset)
405			{
406			$fileObject->fwrite("\n");
407			$fileObject->fwrite("startxref\n");
408			$fileObject->fwrite(sprintf("%d\n", $xrefOffset));
409			$fileObject->fwrite("%%%EOF\n");
410			}
411
412			/**
413			* Computes a file identifier.
414			*
415			* @return string
416			*/
417			private function generateFileIdentifier()
418			{
419			return hex2bin(md5(microtime()));
420			}
421			}
422

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