Code Coverage |
||||||||||
Lines |
Functions and Methods |
Classes and Traits |
||||||||
| Total | |
88.89% |
8 / 9 |
|
66.67% |
2 / 3 |
CRAP | |
0.00% |
0 / 1 |
| FlateFilter | |
88.89% |
8 / 9 |
|
66.67% |
2 / 3 |
5.03 | |
0.00% |
0 / 1 |
| __construct | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| encode | |
75.00% |
3 / 4 |
|
0.00% |
0 / 1 |
2.06 | |||
| decode | |
100.00% |
4 / 4 |
|
100.00% |
1 / 1 |
2 | |||
| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\Filters; |
| 6 | |
| 7 | /** |
| 8 | * FlateDecode — zlib/deflate compression (ISO 32000-2 §7.4.4). |
| 9 | * |
| 10 | * The default filter for PDF streams. Compression level 6 (the default) |
| 11 | * gives a good speed/size balance for typical PDF content. Higher levels |
| 12 | * yield marginal gains at significantly more CPU cost. |
| 13 | */ |
| 14 | final class FlateFilter implements FilterInterface |
| 15 | { |
| 16 | public function __construct(private int $level = 6) {} |
| 17 | |
| 18 | public function encode(string $data): string |
| 19 | { |
| 20 | $result = gzcompress($data, $this->level); |
| 21 | if ($result === false) { |
| 22 | throw new \RuntimeException('FlateFilter encode failed'); |
| 23 | } |
| 24 | return $result; |
| 25 | } |
| 26 | |
| 27 | public function decode(string $data): string |
| 28 | { |
| 29 | $result = @gzuncompress($data); |
| 30 | if ($result === false) { |
| 31 | throw new \RuntimeException('FlateFilter decode failed'); |
| 32 | } |
| 33 | return $result; |
| 34 | } |
| 35 | } |