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| 1 | <?php | 
| 2 | |
| 3 | /** | 
| 4 | * Karla Imagemagick wrapper library | 
| 5 | * | 
| 6 | * PHP Version 8.0< | 
| 7 | * | 
| 8 | * @category Utility | 
| 9 | * @author Johannes Skov Frandsen <jsf@greenoak.dk> | 
| 10 | * @license http://www.opensource.org/licenses/mit-license.php MIT | 
| 11 | * @link https://github.com/localgod/karla Karla | 
| 12 | * @since 2010-06-05 | 
| 13 | */ | 
| 14 | |
| 15 | declare(strict_types=1); | 
| 16 | |
| 17 | namespace Karla; | 
| 18 | |
| 19 | /** | 
| 20 | * Karla core class | 
| 21 | * | 
| 22 | * @category Utility | 
| 23 | * @author Johannes Skov Frandsen <jsf@greenoak.dk> | 
| 24 | * @license http://www.opensource.org/licenses/mit-license.php MIT | 
| 25 | * @link https://github.com/localgod/karla Karla | 
| 26 | */ | 
| 27 | class Karla | 
| 28 | { | 
| 29 | /** | 
| 30 | * Path to imagemagick binary | 
| 31 | * | 
| 32 | * @var string $binPath imagemagick binary | 
| 33 | */ | 
| 34 | private string $binPath; | 
| 35 | |
| 36 | /** | 
| 37 | * Cache controller | 
| 38 | * | 
| 39 | * @var Cache | 
| 40 | */ | 
| 41 | private Cache|null $cache; | 
| 42 | |
| 43 | /** | 
| 44 | * Instance of a imagmagick object. | 
| 45 | * | 
| 46 | * @var Karla $instance imagmagick object. | 
| 47 | */ | 
| 48 | private static $instance; | 
| 49 | |
| 50 | /** | 
| 51 | * Get a instance of Karla. | 
| 52 | * | 
| 53 | * @param string $binPath | 
| 54 | * Path to imagemagic binaries (optional) | 
| 55 | * @param Cache|null $cache | 
| 56 | * Cache controller (optional) | 
| 57 | * | 
| 58 | * @return Karla | 
| 59 | * @throws \InvalidArgumentException | 
| 60 | */ | 
| 61 | public static function perform(string $binPath = '/opt/local/bin/', Cache|null $cache = null): Karla | 
| 62 | { | 
| 63 | if (! (Karla::$instance instanceof Karla)) { | 
| 64 | try { | 
| 65 | Karla::$instance = new Karla($binPath, $cache); | 
| 66 | } catch (\InvalidArgumentException $e) { | 
| 67 | throw new \RuntimeException($e->getMessage() . '(' . $binPath . ')'); | 
| 68 | } | 
| 69 | } | 
| 70 | |
| 71 | return Karla::$instance; | 
| 72 | } | 
| 73 | |
| 74 | /** | 
| 75 | * Construct a new Karla object. | 
| 76 | * | 
| 77 | * @param string $binPath | 
| 78 | * Path to imagemagic binaries | 
| 79 | * @param Cache $cache | 
| 80 | * Cache controller | 
| 81 | * | 
| 82 | * @throws \InvalidArgumentException if path for imagemagick is invalid | 
| 83 | */ | 
| 84 | private function __construct(string $binPath, Cache|null $cache) | 
| 85 | { | 
| 86 | if (! file_exists($binPath)) { | 
| 87 | throw new \InvalidArgumentException('Bin path not found'); | 
| 88 | } | 
| 89 | |
| 90 | if (shell_exec($binPath . 'convert -version | grep ImageMagick') == "") { | 
| 91 | throw new \InvalidArgumentException('ImageMagick could not be located at specified path'); | 
| 92 | } | 
| 93 | $this->binPath = 'export PATH=$PATH:' . $binPath . ';'; | 
| 94 | $this->cache = $cache; | 
| 95 | } | 
| 96 | |
| 97 | /** | 
| 98 | * Run a raw ImageMagick command | 
| 99 | * | 
| 100 | * Karla was never intended to wrap all of the functionality of ImageMagick | 
| 101 | * and likely never will, you will from time to time need to write arguments | 
| 102 | * to ImageMagick like you would have done directly in the consol. | 
| 103 | * | 
| 104 | * @param string $program | 
| 105 | * Imagemagick tool to use | 
| 106 | * @param string $arguments | 
| 107 | * Arguments for the tool | 
| 108 | * | 
| 109 | * @return string Result of the command if any | 
| 110 | * @throws \InvalidArgumentException if you try to run a non ImageMagick program | 
| 111 | */ | 
| 112 | public function raw(string $program, string $arguments = ""): string | 
| 113 | { | 
| 114 | if (! Program\ImageMagick::validProgram($program)) { | 
| 115 | throw new \InvalidArgumentException('ImageMagick could not be located at specified path'); | 
| 116 | } | 
| 117 | strtoupper(substr(PHP_OS, 0, 3)) == "WIN" ? $bin = $program . '.exe' : $bin = $program; | 
| 118 | |
| 119 | return shell_exec($this->binPath . $bin . ' ' . $arguments); | 
| 120 | } | 
| 121 | |
| 122 | /** | 
| 123 | * Start a convert operation | 
| 124 | * | 
| 125 | * @return Program\Convert | 
| 126 | */ | 
| 127 | public function convert(): Program\Convert | 
| 128 | { | 
| 129 | $bin = strtoupper(substr(PHP_OS, 0, 3)) == "WIN" ? | 
| 130 | Program\ImageMagick::IMAGEMAGICK_CONVERT . '.exe' : Program\ImageMagick::IMAGEMAGICK_CONVERT; | 
| 131 | |
| 132 | return new Program\Convert($this->binPath, $bin, $this->cache); | 
| 133 | } | 
| 134 | |
| 135 | /** | 
| 136 | * Start a identify operation | 
| 137 | * | 
| 138 | * @return Program\Identify | 
| 139 | */ | 
| 140 | public function identify(): Program\Identify | 
| 141 | { | 
| 142 | $bin = strtoupper(substr(PHP_OS, 0, 3)) == "WIN" ? | 
| 143 | Program\ImageMagick::IMAGEMAGICK_IDENTIFY . '.exe' : Program\ImageMagick::IMAGEMAGICK_IDENTIFY; | 
| 144 | |
| 145 | return new Program\Identify($this->binPath, $bin, $this->cache); | 
| 146 | } | 
| 147 | |
| 148 | /** | 
| 149 | * Start a composite operation | 
| 150 | * | 
| 151 | * @return Program\Composite | 
| 152 | */ | 
| 153 | public function composite(): Program\Composite | 
| 154 | { | 
| 155 | $bin = strtoupper(substr(PHP_OS, 0, 3)) == "WIN" ? | 
| 156 | Program\ImageMagick::IMAGEMAGICK_COMPOSITE . '.exe' : Program\ImageMagick::IMAGEMAGICK_COMPOSITE; | 
| 157 | |
| 158 | return new Program\Composite($this->binPath, $bin, $this->cache); | 
| 159 | } | 
| 160 | } |