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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) 2009-2023 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; |
| 15 | |
| 16 | use Pop\Utils\ArrayObject as Data; |
| 17 | |
| 18 | /** |
| 19 | * Type1 font class |
| 20 | * |
| 21 | * @category Pop |
| 22 | * @package Pop\Pdf |
| 23 | * @author Nick Sagona, III <dev@nolainteractive.com> |
| 24 | * @copyright Copyright (c) 2009-2023 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
| 25 | * @license http://www.popphp.org/license New BSD License |
| 26 | * @version 4.2.0 |
| 27 | */ |
| 28 | class Type1 extends AbstractFont |
| 29 | { |
| 30 | |
| 31 | /** |
| 32 | * Font properties |
| 33 | * @var array |
| 34 | */ |
| 35 | protected $properties = [ |
| 36 | 'info' => null, |
| 37 | 'bBox' => null, |
| 38 | 'ascent' => 0, |
| 39 | 'descent' => 0, |
| 40 | 'numberOfGlyphs' => 0, |
| 41 | 'glyphWidths' => [], |
| 42 | 'missingWidth' => 0, |
| 43 | 'numberOfHMetrics' => 0, |
| 44 | 'italicAngle' => 0, |
| 45 | 'capHeight' => 0, |
| 46 | 'stemH' => 0, |
| 47 | 'stemV' => 0, |
| 48 | 'unitsPerEm' => 1000, |
| 49 | 'flags' => null, |
| 50 | 'embeddable' => true, |
| 51 | 'dict' => null, |
| 52 | 'data' => null, |
| 53 | 'hex' => null, |
| 54 | 'encoding' => null, |
| 55 | 'length1' => null, |
| 56 | 'length2' => null, |
| 57 | 'fontData' => null, |
| 58 | 'pfbPath' => null, |
| 59 | 'afmPath' => null, |
| 60 | ]; |
| 61 | |
| 62 | /** |
| 63 | * Constructor |
| 64 | * |
| 65 | * Instantiate a Type1 font file object based on a pre-existing font file on disk. |
| 66 | * |
| 67 | * @param string $fontFile |
| 68 | * @param string $fontStream |
| 69 | */ |
| 70 | public function __construct($fontFile = null, $fontStream = null) |
| 71 | { |
| 72 | parent::__construct($fontFile, $fontStream); |
| 73 | |
| 74 | $dir = realpath($this->dir); |
| 75 | |
| 76 | if (strtolower($this->extension) == 'pfb') { |
| 77 | $this->properties['pfbPath'] = $this->fullpath; |
| 78 | $this->parsePfb($this->fullpath); |
| 79 | if (file_exists($dir . DIRECTORY_SEPARATOR . $this->filename . '.afm')) { |
| 80 | $this->properties['afmPath'] = $dir . DIRECTORY_SEPARATOR . $this->filename . '.afm'; |
| 81 | } else if (file_exists($dir . DIRECTORY_SEPARATOR . $this->filename . '.AFM')) { |
| 82 | $this->properties['afmPath'] = $dir . DIRECTORY_SEPARATOR . $this->filename . '.AFM'; |
| 83 | } |
| 84 | if (null !== $this->properties['afmPath']) { |
| 85 | $this->parseAfm($this->properties['afmPath']); |
| 86 | } |
| 87 | } else if (strtolower($this->extension) == 'afm') { |
| 88 | $this->properties['afmPath'] = $this->fullpath; |
| 89 | $this->parseAfm($this->properties['afmPath']); |
| 90 | if (file_exists($dir . DIRECTORY_SEPARATOR . $this->filename . '.pfb')) { |
| 91 | $this->properties['pfbPath'] = $dir . DIRECTORY_SEPARATOR . $this->filename . '.pfb'; |
| 92 | } else if (file_exists($dir . DIRECTORY_SEPARATOR . $this->filename . '.PFB')) { |
| 93 | $this->properties['pfbPath'] = $dir . DIRECTORY_SEPARATOR . $this->filename . '.PFB'; |
| 94 | } |
| 95 | if (null !== $this->properties['pfbPath']) { |
| 96 | $this->parsePfb($this->properties['pfbPath']); |
| 97 | } |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * Method to parse the Type1 PFB file. |
| 103 | * |
| 104 | * @param string $pfb |
| 105 | * @return void |
| 106 | */ |
| 107 | protected function parsePfb($pfb) |
| 108 | { |
| 109 | $data = file_get_contents($pfb); |
| 110 | |
| 111 | // Get lengths and data |
| 112 | $f = fopen($pfb, 'rb'); |
| 113 | $a = unpack('Cmarker/Ctype/Vsize', fread($f,6)); |
| 114 | $this->properties['length1'] = $a['size']; |
| 115 | $this->properties['fontData'] = fread($f, $this->properties['length1']); |
| 116 | $a = unpack('Cmarker/Ctype/Vsize', fread($f,6)); |
| 117 | $this->properties['length2'] = $a['size']; |
| 118 | $this->properties['fontData'] .= fread($f, $this->properties['length2']); |
| 119 | |
| 120 | $info = []; |
| 121 | $this->properties['dict'] = substr($data, stripos($data, 'FontDirectory')); |
| 122 | $this->properties['dict'] = substr($this->properties['dict'], 0, stripos($this->properties['dict'], 'currentdict end')); |
| 123 | |
| 124 | $this->properties['data'] = substr($data, (stripos($data, 'currentfile eexec') + 18)); |
| 125 | $this->properties['data'] = substr( |
| 126 | $this->properties['data'], 0, |
| 127 | (stripos($this->properties['data'], '0000000000000000000000000000000000000000000000000000000000000000') - 1) |
| 128 | ); |
| 129 | |
| 130 | $this->convertToHex(); |
| 131 | |
| 132 | if (stripos($this->properties['dict'], '/FullName') !== false) { |
| 133 | $name = substr($this->properties['dict'], (stripos($this->properties['dict'], '/FullName ') + 10)); |
| 134 | $name = trim(substr($name, 0, stripos($name, 'readonly def'))); |
| 135 | $info['fullName'] = $this->strip($name); |
| 136 | } |
| 137 | |
| 138 | if (stripos($this->properties['dict'], '/FamilyName') !== false) { |
| 139 | $family = substr($this->properties['dict'], (stripos($this->properties['dict'], '/FamilyName ') + 12)); |
| 140 | $family = trim(substr($family, 0, stripos($family, 'readonly def'))); |
| 141 | $info['fontFamily'] = $this->strip($family); |
| 142 | } |
| 143 | |
| 144 | if (stripos($this->properties['dict'], '/FontName') !== false) { |
| 145 | $font = substr($this->properties['dict'], (stripos($this->properties['dict'], '/FontName ') + 10)); |
| 146 | $font = trim(substr($font, 0, stripos($font, 'def'))); |
| 147 | $info['postscriptName'] = $this->strip($font); |
| 148 | } |
| 149 | |
| 150 | if (stripos($this->properties['dict'], '/version') !== false) { |
| 151 | $version = substr($this->properties['dict'], (stripos($this->properties['dict'], '/version ') + 9)); |
| 152 | $version = trim(substr($version, 0, stripos($version, 'readonly def'))); |
| 153 | $info['version'] = $this->strip($version); |
| 154 | } |
| 155 | |
| 156 | if (stripos($this->properties['dict'], '/UniqueId') !== false) { |
| 157 | $matches = []; |
| 158 | preg_match('/UniqueID\s\d/', $this->properties['dict'], $matches, PREG_OFFSET_CAPTURE); |
| 159 | $id = substr($this->properties['dict'], ($matches[0][1] + 9)); |
| 160 | $id = trim(substr($id, 0, stripos($id, 'def'))); |
| 161 | $info['uniqueId'] = $this->strip($id); |
| 162 | } |
| 163 | |
| 164 | if (stripos($this->properties['dict'], '/Notice') !== false) { |
| 165 | $copyright = substr($this->properties['dict'], (stripos($this->properties['dict'], '/Notice ') + 8)); |
| 166 | $copyright = substr($copyright, 0, stripos($copyright, 'readonly def')); |
| 167 | $copyright = str_replace('\\(', '(', $copyright); |
| 168 | $copyright = trim(str_replace('\\)', ')', $copyright)); |
| 169 | $info['copyright'] = $this->strip($copyright); |
| 170 | } |
| 171 | |
| 172 | $this->properties['info'] = new Data($info); |
| 173 | |
| 174 | if (stripos($this->properties['dict'], '/FontBBox') !== false) { |
| 175 | $bBox = substr($this->properties['dict'], (stripos($this->properties['dict'], '/FontBBox') + 9)); |
| 176 | $bBox = substr($bBox, 0, stripos($bBox, 'readonly def')); |
| 177 | $bBox = trim($this->strip($bBox)); |
| 178 | $bBoxAry = explode(' ', $bBox); |
| 179 | $this->properties['bBox'] = new Data([ |
| 180 | 'xMin' => str_replace('{', '', $bBoxAry[0]), |
| 181 | 'yMin' => $bBoxAry[1], |
| 182 | 'xMax' => $bBoxAry[2], |
| 183 | 'yMax' => str_replace('}', '', $bBoxAry[3]) |
| 184 | ]); |
| 185 | } |
| 186 | |
| 187 | if (stripos($this->properties['dict'], '/Ascent') !== false) { |
| 188 | $ascent = substr($this->properties['dict'], (stripos($this->properties['dict'], '/ascent ') + 8)); |
| 189 | $this->properties['ascent'] = trim(substr($ascent, 0, stripos($ascent, 'def'))); |
| 190 | } |
| 191 | |
| 192 | if (stripos($this->properties['dict'], '/Descent') !== false) { |
| 193 | $descent = substr($this->properties['dict'], (stripos($this->properties['dict'], '/descent ') + 9)); |
| 194 | $this->properties['descent'] = trim(substr($descent, 0, stripos($descent, 'def'))); |
| 195 | } |
| 196 | |
| 197 | if (stripos($this->properties['dict'], '/ItalicAngle') !== false) { |
| 198 | $italic = substr($this->properties['dict'], (stripos($this->properties['dict'], '/ItalicAngle ') + 13)); |
| 199 | $this->properties['italicAngle'] = trim(substr($italic, 0, stripos($italic, 'def'))); |
| 200 | if ($this->properties['italicAngle'] != 0) { |
| 201 | $this->properties['flags']->isItalic = true; |
| 202 | } |
| 203 | } |
| 204 | |
| 205 | if (stripos($this->properties['dict'], '/em') !== false) { |
| 206 | $units = substr($this->properties['dict'], (stripos($this->properties['dict'], '/em ') + 4)); |
| 207 | $this->properties['unitsPerEm'] = trim(substr($units, 0, stripos($units, 'def'))); |
| 208 | } |
| 209 | |
| 210 | if (stripos($this->properties['dict'], '/isFixedPitch') !== false) { |
| 211 | $fixed = substr($this->properties['dict'], (stripos($this->properties['dict'], '/isFixedPitch ') + 14)); |
| 212 | $fixed = trim(substr($fixed, 0, stripos($fixed, 'def'))); |
| 213 | $this->properties['flags']->isFixedPitch = ($fixed == 'true') ? true : false; |
| 214 | } |
| 215 | |
| 216 | if (stripos($this->properties['dict'], '/ForceBold') !== false) { |
| 217 | $force = substr($this->properties['dict'], (stripos($this->properties['dict'], '/ForceBold ') + 11)); |
| 218 | $force = trim(substr($force, 0, stripos($force, 'def'))); |
| 219 | $this->properties['flags']->isForceBold = ($force == 'true') ? true : false; |
| 220 | } |
| 221 | |
| 222 | if (stripos($this->properties['dict'], '/Encoding') !== false) { |
| 223 | $enc = substr($this->properties['dict'], (stripos($this->properties['dict'], '/Encoding ') + 10)); |
| 224 | $this->properties['encoding'] = trim(substr($enc, 0, stripos($enc, 'def'))); |
| 225 | } |
| 226 | } |
| 227 | |
| 228 | /** |
| 229 | * Method to parse the Type1 Adobe Font Metrics file |
| 230 | * |
| 231 | * @param string $afm |
| 232 | * @return void |
| 233 | */ |
| 234 | protected function parseAfm($afm) |
| 235 | { |
| 236 | $data = file_get_contents($afm); |
| 237 | |
| 238 | if (stripos($data, 'FontBBox') !== false) { |
| 239 | $bBox = substr($data, (stripos($data, 'FontBBox') + 8)); |
| 240 | $bBox = substr($bBox, 0, stripos($bBox, "\n")); |
| 241 | $bBox = trim($bBox); |
| 242 | $bBoxAry = explode(' ', $bBox); |
| 243 | $this->properties['bBox'] = new Data([ |
| 244 | 'xMin' => $bBoxAry[0], |
| 245 | 'yMin' => $bBoxAry[1], |
| 246 | 'xMax' => $bBoxAry[2], |
| 247 | 'yMax' => $bBoxAry[3] |
| 248 | ]); |
| 249 | } |
| 250 | |
| 251 | if (stripos($data, 'ItalicAngle') !== false) { |
| 252 | $ital = substr($data, (stripos($data, 'ItalicAngle ') + 11)); |
| 253 | $this->properties['italicAngle'] = trim(substr($ital, 0, stripos($ital, "\n"))); |
| 254 | if ($this->properties['italicAngle'] != 0) { |
| 255 | $this->properties['flags']->isItalic = true; |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | if (stripos($data, 'IsFixedPitch') !== false) { |
| 260 | $fixed = substr($data, (stripos($data, 'IsFixedPitch ') + 13)); |
| 261 | $fixed = strtolower(trim(substr($fixed, 0, stripos($fixed, "\n")))); |
| 262 | if ($fixed == 'true') { |
| 263 | $this->properties['flags']->isFixedPitch = true; |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | if (stripos($data, 'CapHeight') !== false) { |
| 268 | $cap = substr($data, (stripos($data, 'CapHeight ') + 10)); |
| 269 | $this->properties['capHeight'] = trim(substr($cap, 0, stripos($cap, "\n"))); |
| 270 | } |
| 271 | |
| 272 | if (stripos($data, 'Ascender') !== false) { |
| 273 | $asc = substr($data, (stripos($data, 'Ascender ') + 9)); |
| 274 | $this->properties['ascent'] = trim(substr($asc, 0, stripos($asc, "\n"))); |
| 275 | } |
| 276 | |
| 277 | if (stripos($data, 'Descender') !== false) { |
| 278 | $desc = substr($data, (stripos($data, 'Descender ') + 10)); |
| 279 | $this->properties['descent'] = trim(substr($desc, 0, stripos($desc, "\n"))); |
| 280 | } |
| 281 | |
| 282 | if (stripos($data, 'StartCharMetrics') !== false) { |
| 283 | $num = substr($data, (stripos($data, 'StartCharMetrics ') + 17)); |
| 284 | $this->properties['numberOfGlyphs'] = trim(substr($num, 0, stripos($num, "\n"))); |
| 285 | $chars = substr($data, (stripos($data, 'StartCharMetrics ') + 17 + strlen($this->properties['numberOfGlyphs']))); |
| 286 | $chars = trim(substr($chars, 0, stripos($chars, 'EndCharMetrics'))); |
| 287 | $glyphs = explode("\n", $chars); |
| 288 | $widths = []; |
| 289 | foreach ($glyphs as $glyph) { |
| 290 | $w = substr($glyph, (stripos($glyph, 'WX ') + 3)); |
| 291 | $w = substr($w, 0, strpos($w, ' ;')); |
| 292 | $widths[] = $w; |
| 293 | } |
| 294 | $this->properties['glyphWidths'] = $widths; |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | /** |
| 299 | * Method to convert the data string to hex. |
| 300 | * |
| 301 | * @return void |
| 302 | */ |
| 303 | protected function convertToHex() |
| 304 | { |
| 305 | $ary = str_split($this->properties['data']); |
| 306 | $length = count($ary); |
| 307 | |
| 308 | for ($i = 0; $i < $length; $i++) { |
| 309 | $this->properties['hex'] .= bin2hex($ary[$i]); |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * Method to strip parentheses et al from a string. |
| 315 | * |
| 316 | * @param string $str |
| 317 | * @return string |
| 318 | */ |
| 319 | protected function strip($str) |
| 320 | { |
| 321 | // Strip parentheses |
| 322 | if (substr($str, 0, 1) == '(') { |
| 323 | $str = substr($str, 1); |
| 324 | } |
| 325 | if (substr($str, -1) == ')') { |
| 326 | $str = substr($str, 0, -1); |
| 327 | } |
| 328 | // Strip curly brackets |
| 329 | if (substr($str, 0, 1) == '{') { |
| 330 | $str = substr($str, 1); |
| 331 | } |
| 332 | if (substr($str, -1) == '}') { |
| 333 | $str = substr($str, 0, -1); |
| 334 | } |
| 335 | // Strip leading slash |
| 336 | if (substr($str, 0, 1) == '/') { |
| 337 | $str = substr($str, 1); |
| 338 | } |
| 339 | |
| 340 | return $str; |
| 341 | } |
| 342 | |
| 343 | } |