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| 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\Font\TrueType\Table; |
| 15 | |
| 16 | use Pop\Pdf\Build\Font; |
| 17 | |
| 18 | use Pop\Utils\ArrayObject as Data; |
| 19 | |
| 20 | /** |
| 21 | * CMAP table class |
| 22 | * |
| 23 | * @category Pop |
| 24 | * @package Pop\Pdf |
| 25 | * @author Nick Sagona, III <dev@nolainteractive.com> |
| 26 | * @copyright Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
| 27 | * @license http://www.popphp.org/license New BSD License |
| 28 | * @version 5.0.0 |
| 29 | */ |
| 30 | class Cmap extends AbstractTable |
| 31 | { |
| 32 | |
| 33 | /** |
| 34 | * Font table properties |
| 35 | * @var array |
| 36 | */ |
| 37 | protected array $properties = [ |
| 38 | 'header' => null, |
| 39 | 'subTables' => [] |
| 40 | ]; |
| 41 | |
| 42 | /** |
| 43 | * Constructor |
| 44 | * |
| 45 | * Instantiate a TTF 'cmap' table object. |
| 46 | * |
| 47 | * @param Font\TrueType $font |
| 48 | */ |
| 49 | public function __construct(Font\TrueType $font) |
| 50 | { |
| 51 | $bytePos = $font->tableInfo['cmap']->offset; |
| 52 | |
| 53 | // Get the CMAP header data. |
| 54 | $cmapTableHeader = unpack( |
| 55 | 'ntableVersion/' . |
| 56 | 'nnumberOfTables', $font->read($bytePos, 4) |
| 57 | ); |
| 58 | |
| 59 | $this->properties['header'] = new Data($cmapTableHeader); |
| 60 | $this->parseSubTables($font); |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Method to parse the CMAP sub-tables. |
| 65 | * |
| 66 | * @param \Pop\Pdf\Build\Font\TrueType $font |
| 67 | * @return void |
| 68 | */ |
| 69 | protected function parseSubTables(\Pop\Pdf\Build\Font\TrueType $font): void |
| 70 | { |
| 71 | $bytePos = $font->tableInfo['cmap']->offset + 4; |
| 72 | |
| 73 | // Get each of the sub-table's data. |
| 74 | for ($i = 0; $i < $this->properties['header']->numberOfTables; $i++) { |
| 75 | $ary = unpack( |
| 76 | 'nplatformId/' . |
| 77 | 'nencodingId/' . |
| 78 | 'Noffset', $font->read($bytePos, 8) |
| 79 | ); |
| 80 | if (($ary['platformId'] == 0) && ($ary['encodingId'] == 0)) { |
| 81 | $ary['encoding'] = 'Unicode 2.0'; |
| 82 | } else if (($ary['platformId'] == 0) && ($ary['encodingId'] == 3)) { |
| 83 | $ary['encoding'] = 'Unicode'; |
| 84 | } else if (($ary['platformId'] == 3) && ($ary['encodingId'] == 1)) { |
| 85 | $ary['encoding'] = 'Microsoft Unicode'; |
| 86 | } else if (($ary['platformId'] == 1) && ($ary['encodingId'] == 0)) { |
| 87 | $ary['encoding'] = 'Mac Roman'; |
| 88 | } else { |
| 89 | $ary['encoding'] = 'Unknown'; |
| 90 | } |
| 91 | $this->properties['subTables'][] = new Data($ary); |
| 92 | $bytePos += 8; |
| 93 | } |
| 94 | |
| 95 | // Parse each of the sub-table's data. |
| 96 | foreach ($this->properties['subTables'] as $key => $subTable) { |
| 97 | $bytePos = $font->tableInfo['cmap']->offset + $subTable->offset; |
| 98 | $ary = unpack( |
| 99 | 'nformat/' . |
| 100 | 'nlength/' . |
| 101 | 'nlanguage', $font->read($bytePos, 6) |
| 102 | ); |
| 103 | $this->properties['subTables'][$key]->format = $ary['format']; |
| 104 | $this->properties['subTables'][$key]->length = $ary['length']; |
| 105 | $this->properties['subTables'][$key]->language = $ary['language']; |
| 106 | $bytePos += 6; |
| 107 | $this->properties['subTables'][$key]->data = $font->read($bytePos, $ary['length'] - 6); |
| 108 | switch ($this->properties['subTables'][$key]->format) { |
| 109 | case 0: |
| 110 | $this->properties['subTables'][$key]->parsed = Cmap\ByteEncoding::parseData($this->properties['subTables'][$key]->data); |
| 111 | break; |
| 112 | case 4: |
| 113 | $this->properties['subTables'][$key]->parsed = Cmap\SegmentToDelta::parseData($this->properties['subTables'][$key]->data); |
| 114 | break; |
| 115 | case 6: |
| 116 | $this->properties['subTables'][$key]->parsed = Cmap\TrimmedTable::parseData($this->properties['subTables'][$key]->data); |
| 117 | break; |
| 118 | } |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | } |