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<?php
2
 
3
/**
4
 * This file is part of FPDI
5
 *
6
 * @package   setasign\Fpdi
7
 * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
8
 * @license   http://opensource.org/licenses/mit-license The MIT License
9
 */
10
 
11
namespace setasign\Fpdi;
12
 
13
use setasign\Fpdi\PdfParser\CrossReference\CrossReferenceException;
14
use setasign\Fpdi\PdfParser\Filter\FilterException;
15
use setasign\Fpdi\PdfParser\PdfParser;
16
use setasign\Fpdi\PdfParser\PdfParserException;
17
use setasign\Fpdi\PdfParser\StreamReader;
18
use setasign\Fpdi\PdfParser\Type\PdfArray;
19
use setasign\Fpdi\PdfParser\Type\PdfBoolean;
20
use setasign\Fpdi\PdfParser\Type\PdfDictionary;
21
use setasign\Fpdi\PdfParser\Type\PdfHexString;
22
use setasign\Fpdi\PdfParser\Type\PdfIndirectObject;
23
use setasign\Fpdi\PdfParser\Type\PdfIndirectObjectReference;
24
use setasign\Fpdi\PdfParser\Type\PdfName;
25
use setasign\Fpdi\PdfParser\Type\PdfNull;
26
use setasign\Fpdi\PdfParser\Type\PdfNumeric;
27
use setasign\Fpdi\PdfParser\Type\PdfStream;
28
use setasign\Fpdi\PdfParser\Type\PdfString;
29
use setasign\Fpdi\PdfParser\Type\PdfToken;
30
use setasign\Fpdi\PdfParser\Type\PdfType;
31
use setasign\Fpdi\PdfParser\Type\PdfTypeException;
32
use setasign\Fpdi\PdfReader\DataStructure\Rectangle;
33
use setasign\Fpdi\PdfReader\PageBoundaries;
34
use setasign\Fpdi\PdfReader\PdfReader;
35
use setasign\Fpdi\PdfReader\PdfReaderException;
36
use /* This namespace/class is used by the commercial FPDI PDF-Parser add-on. */
37
    /** @noinspection PhpUndefinedClassInspection */
38
    /** @noinspection PhpUndefinedNamespaceInspection */
39
    setasign\FpdiPdfParser\PdfParser\PdfParser as FpdiPdfParser;
40
 
41
/**
42
 * The FpdiTrait
43
 *
44
 * This trait offers the core functionalities of FPDI. By passing them to a trait we can reuse it with e.g. TCPDF in a
45
 * very easy way.
46
 */
47
trait FpdiTrait
48
{
49
    /**
50
     * The pdf reader instances.
51
     *
52
     * @var PdfReader[]
53
     */
54
    protected $readers = [];
55
 
56
    /**
57
     * Instances created internally.
58
     *
59
     * @var array
60
     */
61
    protected $createdReaders = [];
62
 
63
    /**
64
     * The current reader id.
65
     *
66
     * @var string|null
67
     */
68
    protected $currentReaderId;
69
 
70
    /**
71
     * Data of all imported pages.
72
     *
73
     * @var array
74
     */
75
    protected $importedPages = [];
76
 
77
    /**
78
     * A map from object numbers of imported objects to new assigned object numbers by FPDF.
79
     *
80
     * @var array
81
     */
82
    protected $objectMap = [];
83
 
84
    /**
85
     * An array with information about objects, which needs to be copied to the resulting document.
86
     *
87
     * @var array
88
     */
89
    protected $objectsToCopy = [];
90
 
91
    /**
92
     * Release resources and file handles.
93
     *
94
     * This method is called internally when the document is created successfully. By default it only cleans up
95
     * stream reader instances which were created internally.
96
     *
97
     * @param bool $allReaders
98
     */
99
    public function cleanUp($allReaders = false)
100
    {
101
        $readers = $allReaders ? array_keys($this->readers) : $this->createdReaders;
102
        foreach ($readers as $id) {
103
            $this->readers[$id]->getParser()->getStreamReader()->cleanUp();
104
            unset($this->readers[$id]);
105
        }
106
 
107
        $this->createdReaders = [];
108
    }
109
 
110
    /**
111
     * Set the minimal PDF version.
112
     *
113
     * @param string $pdfVersion
114
     */
115
    protected function setMinPdfVersion($pdfVersion)
116
    {
117
        if (\version_compare($pdfVersion, $this->PDFVersion, '>')) {
118
            $this->PDFVersion = $pdfVersion;
119
        }
120
    }
121
 
122
    /** @noinspection PhpUndefinedClassInspection */
123
    /**
124
     * Get a new pdf parser instance.
125
     *
126
     * @param StreamReader $streamReader
127
     * @param array $parserParams Individual parameters passed to the parser instance.
128
     * @return PdfParser|FpdiPdfParser
129
     */
130
    protected function getPdfParserInstance(StreamReader $streamReader, array $parserParams = [])
131
    {
132
        // note: if you get an exception here - turn off errors/warnings on not found classes for your autoloader.
133
        // psr-4 (https://www.php-fig.org/psr/psr-4/) says: Autoloader implementations MUST NOT throw
134
        // exceptions, MUST NOT raise errors of any level, and SHOULD NOT return a value.
135
        /** @noinspection PhpUndefinedClassInspection */
136
        if (\class_exists(FpdiPdfParser::class)) {
137
            /** @noinspection PhpUndefinedClassInspection */
138
            return new FpdiPdfParser($streamReader, $parserParams);
139
        }
140
 
141
        return new PdfParser($streamReader);
142
    }
143
 
144
    /**
145
     * Get an unique reader id by the $file parameter.
146
     *
147
     * @param string|resource|PdfReader|StreamReader $file An open file descriptor, a path to a file, a PdfReader
148
     *                                                     instance or a StreamReader instance.
149
     * @param array $parserParams Individual parameters passed to the parser instance.
150
     * @return string
151
     */
152
    protected function getPdfReaderId($file, array $parserParams = [])
153
    {
154
        if (\is_resource($file)) {
155
            $id = (string) $file;
156
        } elseif (\is_string($file)) {
157
            $id = \realpath($file);
158
            if ($id === false) {
159
                $id = $file;
160
            }
161
        } elseif (\is_object($file)) {
162
            $id = \spl_object_hash($file);
163
        } else {
164
            throw new \InvalidArgumentException(
165
                \sprintf('Invalid type in $file parameter (%s)', \gettype($file))
166
            );
167
        }
168
 
169
        /** @noinspection OffsetOperationsInspection */
170
        if (isset($this->readers[$id])) {
171
            return $id;
172
        }
173
 
174
        if (\is_resource($file)) {
175
            $streamReader = new StreamReader($file);
176
        } elseif (\is_string($file)) {
177
            $streamReader = StreamReader::createByFile($file);
178
            $this->createdReaders[] = $id;
179
        } else {
180
            $streamReader = $file;
181
        }
182
 
183
        $reader = new PdfReader($this->getPdfParserInstance($streamReader, $parserParams));
184
        /** @noinspection OffsetOperationsInspection */
185
        $this->readers[$id] = $reader;
186
 
187
        return $id;
188
    }
189
 
190
    /**
191
     * Get a pdf reader instance by its id.
192
     *
193
     * @param string $id
194
     * @return PdfReader
195
     */
196
    protected function getPdfReader($id)
197
    {
198
        if (isset($this->readers[$id])) {
199
            return $this->readers[$id];
200
        }
201
 
202
        throw new \InvalidArgumentException(
203
            \sprintf('No pdf reader with the given id (%s) exists.', $id)
204
        );
205
    }
206
 
207
    /**
208
     * Set the source PDF file.
209
     *
210
     * @param string|resource|StreamReader $file Path to the file or a stream resource or a StreamReader instance.
211
     * @return int The page count of the PDF document.
212
     * @throws PdfParserException
213
     */
214
    public function setSourceFile($file)
215
    {
216
        return $this->setSourceFileWithParserParams($file);
217
    }
218
 
219
    /**
220
     * Set the source PDF file with parameters which are passed to the parser instance.
221
     *
222
     * This method allows us to pass e.g. authentication information to the parser instance.
223
     *
224
     * @param string|resource|StreamReader $file Path to the file or a stream resource or a StreamReader instance.
225
     * @param array $parserParams Individual parameters passed to the parser instance.
226
     * @return int The page count of the PDF document.
227
     * @throws CrossReferenceException
228
     * @throws PdfParserException
229
     * @throws PdfTypeException
230
     */
231
    public function setSourceFileWithParserParams($file, array $parserParams = [])
232
    {
233
        $this->currentReaderId = $this->getPdfReaderId($file, $parserParams);
234
        $this->objectsToCopy[$this->currentReaderId] = [];
235
 
236
        $reader = $this->getPdfReader($this->currentReaderId);
237
        $this->setMinPdfVersion($reader->getPdfVersion());
238
 
239
        return $reader->getPageCount();
240
    }
241
 
242
    /**
243
     * Imports a page.
244
     *
245
     * @param int $pageNumber The page number.
246
     * @param string $box The page boundary to import. Default set to PageBoundaries::CROP_BOX.
247
     * @param bool $groupXObject Define the form XObject as a group XObject to support transparency (if used).
248
     * @param bool $importExternalLinks Define whether external links are imported or not.
249
     * @return string A unique string identifying the imported page.
250
     * @throws CrossReferenceException
251
     * @throws FilterException
252
     * @throws PdfParserException
253
     * @throws PdfTypeException
254
     * @throws PdfReaderException
255
     * @see PageBoundaries
256
     */
257
    public function importPage(
258
        $pageNumber,
259
        $box = PageBoundaries::CROP_BOX,
260
        $groupXObject = true,
261
        $importExternalLinks = false
262
    ) {
263
        if ($this->currentReaderId === null) {
264
            throw new \BadMethodCallException('No reader initiated. Call setSourceFile() first.');
265
        }
266
 
267
        $pageId = $this->currentReaderId;
268
 
269
        $pageNumber = (int)$pageNumber;
270
        $pageId .= '|' . $pageNumber . '|' . ($groupXObject ? '1' : '0') . '|' . ($importExternalLinks ? '1' : '0');
271
 
272
        // for backwards compatibility with FPDI 1
273
        $box = \ltrim($box, '/');
274
        if (!PageBoundaries::isValidName($box)) {
275
            throw new \InvalidArgumentException(
276
                \sprintf('Box name is invalid: "%s"', $box)
277
            );
278
        }
279
 
280
        $pageId .= '|' . $box;
281
 
282
        if (isset($this->importedPages[$pageId])) {
283
            return $pageId;
284
        }
285
 
286
        $reader = $this->getPdfReader($this->currentReaderId);
287
        $page = $reader->getPage($pageNumber);
288
 
289
        $bbox = $page->getBoundary($box);
290
        if ($bbox === false) {
291
            throw new PdfReaderException(
292
                \sprintf("Page doesn't have a boundary box (%s).", $box),
293
                PdfReaderException::MISSING_DATA
294
            );
295
        }
296
 
297
        $dict = new PdfDictionary();
298
        $dict->value['Type'] = PdfName::create('XObject');
299
        $dict->value['Subtype'] = PdfName::create('Form');
300
        $dict->value['FormType'] = PdfNumeric::create(1);
301
        $dict->value['BBox'] = $bbox->toPdfArray();
302
 
303
        if ($groupXObject) {
304
            $this->setMinPdfVersion('1.4');
305
            $dict->value['Group'] = PdfDictionary::create([
306
                'Type' => PdfName::create('Group'),
307
                'S' => PdfName::create('Transparency')
308
            ]);
309
        }
310
 
311
        $resources = $page->getAttribute('Resources');
312
        if ($resources !== null) {
313
            $dict->value['Resources'] = $resources;
314
        }
315
 
316
        list($width, $height) = $page->getWidthAndHeight($box);
317
 
318
        $a = 1;
319
        $b = 0;
320
        $c = 0;
321
        $d = 1;
322
        $e = -$bbox->getLlx();
323
        $f = -$bbox->getLly();
324
 
325
        $rotation = $page->getRotation();
326
 
327
        if ($rotation !== 0) {
328
            $rotation *= -1;
329
            $angle = $rotation * M_PI / 180;
330
            $a = \cos($angle);
331
            $b = \sin($angle);
332
            $c = -$b;
333
            $d = $a;
334
 
335
            switch ($rotation) {
336
                case -90:
337
                    $e = -$bbox->getLly();
338
                    $f = $bbox->getUrx();
339
                    break;
340
                case -180:
341
                    $e = $bbox->getUrx();
342
                    $f = $bbox->getUry();
343
                    break;
344
                case -270:
345
                    $e = $bbox->getUry();
346
                    $f = -$bbox->getLlx();
347
                    break;
348
            }
349
        }
350
 
351
        // we need to rotate/translate
352
        if ($a != 1 || $b != 0 || $c != 0 || $d != 1 || $e != 0 || $f != 0) {
353
            $dict->value['Matrix'] = PdfArray::create([
354
                PdfNumeric::create($a), PdfNumeric::create($b), PdfNumeric::create($c),
355
                PdfNumeric::create($d), PdfNumeric::create($e), PdfNumeric::create($f)
356
            ]);
357
        }
358
 
359
        // try to use the existing content stream
360
        $pageDict = $page->getPageDictionary();
361
 
362
        try {
363
            $contentsObject = PdfType::resolve(PdfDictionary::get($pageDict, 'Contents'), $reader->getParser(), true);
364
            $contents =  PdfType::resolve($contentsObject, $reader->getParser());
365
 
366
            // just copy the stream reference if it is only a single stream
367
            if (
368
                ($contentsIsStream = ($contents instanceof PdfStream))
369
                || ($contents instanceof PdfArray && \count($contents->value) === 1)
370
            ) {
371
                if ($contentsIsStream) {
372
                    /**
373
                     * @var PdfIndirectObject $contentsObject
374
                     */
375
                    $stream = $contents;
376
                } else {
377
                    $stream = PdfType::resolve($contents->value[0], $reader->getParser());
378
                }
379
 
380
                $filter = PdfDictionary::get($stream->value, 'Filter');
381
                if (!$filter instanceof PdfNull) {
382
                    $dict->value['Filter'] = $filter;
383
                }
384
                $length = PdfType::resolve(PdfDictionary::get($stream->value, 'Length'), $reader->getParser());
385
                $dict->value['Length'] = $length;
386
                $stream->value = $dict;
387
                // otherwise extract it from the array and re-compress the whole stream
388
            } else {
389
                $streamContent = $this->compress
390
                    ? \gzcompress($page->getContentStream())
391
                    : $page->getContentStream();
392
 
393
                $dict->value['Length'] = PdfNumeric::create(\strlen($streamContent));
394
                if ($this->compress) {
395
                    $dict->value['Filter'] = PdfName::create('FlateDecode');
396
                }
397
 
398
                $stream = PdfStream::create($dict, $streamContent);
399
            }
400
        // Catch faulty pages and use an empty content stream
401
        } catch (FpdiException $e) {
402
            $dict->value['Length'] = PdfNumeric::create(0);
403
            $stream = PdfStream::create($dict, '');
404
        }
405
 
406
        $externalLinks = [];
407
        if ($importExternalLinks) {
408
            $externalLinks = $page->getExternalLinks($box);
409
        }
410
 
411
        $this->importedPages[$pageId] = [
412
            'objectNumber' => null,
413
            'readerId' => $this->currentReaderId,
414
            'id' => 'TPL' . $this->getNextTemplateId(),
415
            'width' => $width / $this->k,
416
            'height' => $height / $this->k,
417
            'stream' => $stream,
418
            'externalLinks' => $externalLinks
419
        ];
420
 
421
        return $pageId;
422
    }
423
 
424
    /**
425
     * Draws an imported page onto the page.
426
     *
427
     * Give only one of the size parameters (width, height) to calculate the other one automatically in view to the
428
     * aspect ratio.
429
     *
430
     * @param mixed $pageId The page id
431
     * @param float|int|array $x The abscissa of upper-left corner. Alternatively you could use an assoc array
432
     *                           with the keys "x", "y", "width", "height", "adjustPageSize".
433
     * @param float|int $y The ordinate of upper-left corner.
434
     * @param float|int|null $width The width.
435
     * @param float|int|null $height The height.
436
     * @param bool $adjustPageSize
437
     * @return array The size.
438
     * @see Fpdi::getTemplateSize()
439
     */
440
    public function useImportedPage($pageId, $x = 0, $y = 0, $width = null, $height = null, $adjustPageSize = false)
441
    {
442
        if (\is_array($x)) {
443
            /** @noinspection OffsetOperationsInspection */
444
            unset($x['pageId']);
445
            \extract($x, EXTR_IF_EXISTS);
446
            /** @noinspection NotOptimalIfConditionsInspection */
447
            if (\is_array($x)) {
448
                $x = 0;
449
            }
450
        }
451
 
452
        if (!isset($this->importedPages[$pageId])) {
453
            throw new \InvalidArgumentException('Imported page does not exist!');
454
        }
455
 
456
        $importedPage = $this->importedPages[$pageId];
457
 
458
        $originalSize = $this->getTemplateSize($pageId);
459
        $newSize = $this->getTemplateSize($pageId, $width, $height);
460
        if ($adjustPageSize) {
461
            $this->setPageFormat($newSize, $newSize['orientation']);
462
        }
463
 
464
        $scaleX = ($newSize['width'] / $originalSize['width']);
465
        $scaleY = ($newSize['height'] / $originalSize['height']);
466
        $xPt = $x * $this->k;
467
        $yPt = $y * $this->k;
468
        $newHeightPt = $newSize['height'] * $this->k;
469
 
470
        $this->_out(
471
            // reset standard values, translate and scale
472
            \sprintf(
473
                'q 0 J 1 w 0 j 0 G 0 g %.4F 0 0 %.4F %.4F %.4F cm /%s Do Q',
474
                $scaleX,
475
                $scaleY,
476
                $xPt,
477
                $this->hPt - $yPt - $newHeightPt,
478
                $importedPage['id']
479
            )
480
        );
481
 
482
        if (count($importedPage['externalLinks']) > 0) {
483
            foreach ($importedPage['externalLinks'] as $externalLink) {
484
                // mPDF uses also 'externalLinks' but doesn't come with a rect-value
485
                if (!isset($externalLink['rect'])) {
486
                    continue;
487
                }
488
 
489
                /** @var Rectangle $rect */
490
                $rect = $externalLink['rect'];
491
                $this->Link(
492
                    $x + $rect->getLlx() / $this->k * $scaleX,
493
                    $y + $newSize['height'] - ($rect->getLly() + $rect->getHeight()) / $this->k * $scaleY,
494
                    $rect->getWidth() / $this->k * $scaleX,
495
                    $rect->getHeight()  / $this->k * $scaleY,
496
                    $externalLink['uri']
497
                );
498
 
499
                $this->adjustLastLink($externalLink, $xPt, $scaleX, $yPt, $newHeightPt, $scaleY, $importedPage);
500
            }
501
        }
502
 
503
        return $newSize;
504
    }
505
 
506
    /**
507
     * This method will add additional data to the last created link/annotation.
508
     *
509
     * It is separated because TCPDF uses its own logic to handle link annotations.
510
     * This method is overwritten in the TCPDF implementation.
511
     *
512
     * @param array $externalLink
513
     * @param float|int $xPt
514
     * @param float|int $scaleX
515
     * @param float|int $yPt
516
     * @param float|int $newHeightPt
517
     * @param float|int $scaleY
518
     * @param array $importedPage
519
     * @return void
520
     */
521
    protected function adjustLastLink($externalLink, $xPt, $scaleX, $yPt, $newHeightPt, $scaleY, $importedPage)
522
    {
523
        // let's create a relation of the newly created link to the data of the external link
524
        $lastLink = count($this->PageLinks[$this->page]);
525
        $this->PageLinks[$this->page][$lastLink - 1]['importedLink'] = $externalLink;
526
        if (count($externalLink['quadPoints']) > 0) {
527
            $quadPoints = [];
528
            for ($i = 0, $n = count($externalLink['quadPoints']); $i < $n; $i += 2) {
529
                $quadPoints[] = $xPt + $externalLink['quadPoints'][$i] * $scaleX;
530
                $quadPoints[] = $this->hPt - $yPt - $newHeightPt + $externalLink['quadPoints'][$i + 1] * $scaleY;
531
            }
532
 
533
            $this->PageLinks[$this->page][$lastLink - 1]['quadPoints'] = $quadPoints;
534
        }
535
    }
536
 
537
    /**
538
     * Get the size of an imported page.
539
     *
540
     * Give only one of the size parameters (width, height) to calculate the other one automatically in view to the
541
     * aspect ratio.
542
     *
543
     * @param mixed $tpl The template id
544
     * @param float|int|null $width The width.
545
     * @param float|int|null $height The height.
546
     * @return array|bool An array with following keys: width, height, 0 (=width), 1 (=height), orientation (L or P)
547
     */
548
    public function getImportedPageSize($tpl, $width = null, $height = null)
549
    {
550
        if (isset($this->importedPages[$tpl])) {
551
            $importedPage = $this->importedPages[$tpl];
552
 
553
            if ($width === null && $height === null) {
554
                $width = $importedPage['width'];
555
                $height = $importedPage['height'];
556
            } elseif ($width === null) {
557
                $width = $height * $importedPage['width'] / $importedPage['height'];
558
            }
559
 
560
            if ($height  === null) {
561
                $height = $width * $importedPage['height'] / $importedPage['width'];
562
            }
563
 
564
            if ($height <= 0. || $width <= 0.) {
565
                throw new \InvalidArgumentException('Width or height parameter needs to be larger than zero.');
566
            }
567
 
568
            return [
569
                'width' => $width,
570
                'height' => $height,
571
 
572
                1 => $height,
573
                'orientation' => $width > $height ? 'L' : 'P'
574
            ];
575
        }
576
 
577
        return false;
578
    }
579
 
580
    /**
581
     * Writes a PdfType object to the resulting buffer.
582
     *
583
     * @param PdfType $value
584
     * @throws PdfTypeException
585
     */
586
    protected function writePdfType(PdfType $value)
587
    {
588
        if ($value instanceof PdfNumeric) {
589
            if (\is_int($value->value)) {
590
                $this->_put($value->value . ' ', false);
591
            } else {
592
                $this->_put(\rtrim(\rtrim(\sprintf('%.5F', $value->value), '0'), '.') . ' ', false);
593
            }
594
        } elseif ($value instanceof PdfName) {
595
            $this->_put('/' . $value->value . ' ', false);
596
        } elseif ($value instanceof PdfString) {
597
            $this->_put('(' . $value->value . ')', false);
598
        } elseif ($value instanceof PdfHexString) {
599
            $this->_put('<' . $value->value . '>', false);
600
        } elseif ($value instanceof PdfBoolean) {
601
            $this->_put($value->value ? 'true ' : 'false ', false);
602
        } elseif ($value instanceof PdfArray) {
603
            $this->_put('[', false);
604
            foreach ($value->value as $entry) {
605
                $this->writePdfType($entry);
606
            }
607
            $this->_put(']');
608
        } elseif ($value instanceof PdfDictionary) {
609
            $this->_put('<<', false);
610
            foreach ($value->value as $name => $entry) {
611
                $this->_put('/' . $name . ' ', false);
612
                $this->writePdfType($entry);
613
            }
614
            $this->_put('>>');
615
        } elseif ($value instanceof PdfToken) {
616
            $this->_put($value->value);
617
        } elseif ($value instanceof PdfNull) {
618
            $this->_put('null ', false);
619
        } elseif ($value instanceof PdfStream) {
620
            $this->writePdfType($value->value);
621
            $this->_put('stream');
622
            $this->_put($value->getStream());
623
            $this->_put('endstream');
624
        } elseif ($value instanceof PdfIndirectObjectReference) {
625
            if (!isset($this->objectMap[$this->currentReaderId])) {
626
                $this->objectMap[$this->currentReaderId] = [];
627
            }
628
 
629
            if (!isset($this->objectMap[$this->currentReaderId][$value->value])) {
630
                $this->objectMap[$this->currentReaderId][$value->value] = ++$this->n;
631
                $this->objectsToCopy[$this->currentReaderId][] = $value->value;
632
            }
633
 
634
            $this->_put($this->objectMap[$this->currentReaderId][$value->value] . ' 0 R ', false);
635
        } elseif ($value instanceof PdfIndirectObject) {
636
            $n = $this->objectMap[$this->currentReaderId][$value->objectNumber];
637
            $this->_newobj($n);
638
            $this->writePdfType($value->value);
639
 
640
            // add newline before "endobj" for all objects in view to PDF/A conformance
641
            if (
642
                !(
643
                    ($value->value instanceof PdfArray) ||
644
                    ($value->value instanceof PdfDictionary) ||
645
                    ($value->value instanceof PdfToken) ||
646
                    ($value->value instanceof PdfStream)
647
                )
648
            ) {
649
                $this->_put("\n", false);
650
            }
651
 
652
            $this->_put('endobj');
653
        }
654
    }
655
}