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1 |
1 | <?php |
2 | /** |
3 | * Pop PHP Framework (http://www.popphp.org/) |
4 | * |
5 | * @link https://github.com/popphp/popphp-framework |
6 | * @author Nick Sagona, III <dev@nolainteractive.com> |
7 | * @copyright Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
8 | * @license http://www.popphp.org/license New BSD License |
9 | */ |
10 | |
11 | /** |
12 | * @namespace |
13 | */ |
14 | namespace Pop\Pdf\Build\PdfObject; |
15 | |
16 | /** |
17 | * Pdf root object class |
18 | * |
19 | * @category Pop |
20 | * @package Pop\Pdf |
21 | * @author Nick Sagona, III <dev@nolainteractive.com> |
22 | * @copyright Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
23 | * @license http://www.popphp.org/license New BSD License |
24 | * @version 5.0.0 |
25 | */ |
26 | class RootObject extends AbstractObject |
27 | { |
28 | |
29 | /** |
30 | * PDF version |
31 | * @var float |
32 | */ |
33 | protected float $version = 1.7; |
34 | |
35 | /** |
36 | * PDF root object index |
37 | * @var ?int |
38 | */ |
39 | protected ?int $index = 1; |
40 | |
41 | /** |
42 | * PDF root parent index |
43 | * @var int |
44 | */ |
45 | protected int $parent = 2; |
46 | |
47 | /** |
48 | * Constructor |
49 | * |
50 | * Instantiate a PDF root object. |
51 | * |
52 | * @param int $index |
53 | */ |
54 | public function __construct(int $index = 1) |
55 | { |
56 | $this->setIndex($index); |
57 | $this->setData("[{root_index}] 0 obj\n<<[{form_index}]/Pages [{parent_index}] 0 R/Type/Catalog>>\nendobj\n"); |
58 | } |
59 | |
60 | /** |
61 | * Parse a root object from a string |
62 | * |
63 | * @param string $stream |
64 | * @return RootObject |
65 | */ |
66 | public static function parse(string $stream): RootObject |
67 | { |
68 | $root = new self(); |
69 | |
70 | // Else, parse out any metadata and determine the root and parent object indices. |
71 | $root->setIndex(substr($stream, 0, strpos($stream, ' '))); |
72 | $stream = str_replace($root->getIndex() . ' 0 obj', '[{root_index}] 0 obj', $stream); |
73 | |
74 | // Strip away any metadata |
75 | if (str_contains($stream, '/Metadata')) { |
76 | $metadata = substr($stream, strpos($stream, 'Metadata')); |
77 | $metadata = '/' . substr($metadata, 0, strpos($metadata, '/')); |
78 | $stream = str_replace($metadata, '', $stream); |
79 | } |
80 | |
81 | // Determine the parent index. |
82 | $parent = substr($stream, (strpos($stream, '/Pages') + 6)); |
83 | $parent = trim(substr($parent, 0, strpos($parent, '0 R'))); |
84 | $root->setParentIndex($parent); |
85 | $stream = str_replace('Pages ' . $root->getParentIndex() . ' 0 R', 'Pages [{parent_index}] 0 R', $stream); |
86 | |
87 | // Set the root object parent index and the data. |
88 | $root->setData($stream . "\n"); |
89 | |
90 | return $root; |
91 | } |
92 | |
93 | /** |
94 | * Set the root object version |
95 | * |
96 | * @param float $version |
97 | * @return RootObject |
98 | */ |
99 | public function setVersion(float $version): RootObject |
100 | { |
101 | $this->version = $version; |
102 | return $this; |
103 | } |
104 | |
105 | /** |
106 | * Set the root object parent index |
107 | * |
108 | * @param int $p |
109 | * @return RootObject |
110 | */ |
111 | public function setParentIndex(int $p): RootObject |
112 | { |
113 | $this->parent = $p; |
114 | return $this; |
115 | } |
116 | |
117 | /** |
118 | * Set the root object form index |
119 | * |
120 | * @param string $forms |
121 | * @return RootObject |
122 | */ |
123 | public function setFormReferences(string $forms): RootObject |
124 | { |
125 | $data = str_replace('[{form_index}]', '/AcroForm [' . $forms . ']', $this->data); |
126 | $this->setData($data); |
127 | return $this; |
128 | } |
129 | |
130 | /** |
131 | * Get the root object version |
132 | * |
133 | * @return float |
134 | */ |
135 | public function getVersion(): float |
136 | { |
137 | return $this->version; |
138 | } |
139 | |
140 | /** |
141 | * Get the root object parent index |
142 | * |
143 | * @return int |
144 | */ |
145 | public function getParentIndex(): int |
146 | { |
147 | return $this->parent; |
148 | } |
149 | |
150 | /** |
151 | * Method to print the root object. |
152 | * |
153 | * @return string |
154 | */ |
155 | public function __toString(): string |
156 | { |
157 | return '%PDF-' . $this->version . "\n" . |
158 | str_replace(['[{root_index}]', '[{parent_index}]', '[{form_index}]'], [$this->index, $this->parent, ''], $this->data); |
159 | } |
160 | |
161 | } |