[Summary view]

Differences Between: [Versions 310 and 311] [Versions 311 and 400] [Versions 311 and 401] [Versions 311 and 402] [Versions 311 and 403] [Versions 39 and 311]

   1  <?php
   2  
   3  namespace PhpOffice\PhpSpreadsheet\Helper;
   4  
   5  use DOMDocument;
   6  use DOMElement;
   7  use DOMNode;
   8  use DOMText;
   9  use PhpOffice\PhpSpreadsheet\RichText\RichText;
  10  use PhpOffice\PhpSpreadsheet\Style\Color;
  11  use PhpOffice\PhpSpreadsheet\Style\Font;
  12  
  13  class Html
  14  {
  15      protected static $colourMap = [
  16          'aliceblue' => 'f0f8ff',
  17          'antiquewhite' => 'faebd7',
  18          'antiquewhite1' => 'ffefdb',
  19          'antiquewhite2' => 'eedfcc',
  20          'antiquewhite3' => 'cdc0b0',
  21          'antiquewhite4' => '8b8378',
  22          'aqua' => '00ffff',
  23          'aquamarine1' => '7fffd4',
  24          'aquamarine2' => '76eec6',
  25          'aquamarine4' => '458b74',
  26          'azure1' => 'f0ffff',
  27          'azure2' => 'e0eeee',
  28          'azure3' => 'c1cdcd',
  29          'azure4' => '838b8b',
  30          'beige' => 'f5f5dc',
  31          'bisque1' => 'ffe4c4',
  32          'bisque2' => 'eed5b7',
  33          'bisque3' => 'cdb79e',
  34          'bisque4' => '8b7d6b',
  35          'black' => '000000',
  36          'blanchedalmond' => 'ffebcd',
  37          'blue' => '0000ff',
  38          'blue1' => '0000ff',
  39          'blue2' => '0000ee',
  40          'blue4' => '00008b',
  41          'blueviolet' => '8a2be2',
  42          'brown' => 'a52a2a',
  43          'brown1' => 'ff4040',
  44          'brown2' => 'ee3b3b',
  45          'brown3' => 'cd3333',
  46          'brown4' => '8b2323',
  47          'burlywood' => 'deb887',
  48          'burlywood1' => 'ffd39b',
  49          'burlywood2' => 'eec591',
  50          'burlywood3' => 'cdaa7d',
  51          'burlywood4' => '8b7355',
  52          'cadetblue' => '5f9ea0',
  53          'cadetblue1' => '98f5ff',
  54          'cadetblue2' => '8ee5ee',
  55          'cadetblue3' => '7ac5cd',
  56          'cadetblue4' => '53868b',
  57          'chartreuse1' => '7fff00',
  58          'chartreuse2' => '76ee00',
  59          'chartreuse3' => '66cd00',
  60          'chartreuse4' => '458b00',
  61          'chocolate' => 'd2691e',
  62          'chocolate1' => 'ff7f24',
  63          'chocolate2' => 'ee7621',
  64          'chocolate3' => 'cd661d',
  65          'coral' => 'ff7f50',
  66          'coral1' => 'ff7256',
  67          'coral2' => 'ee6a50',
  68          'coral3' => 'cd5b45',
  69          'coral4' => '8b3e2f',
  70          'cornflowerblue' => '6495ed',
  71          'cornsilk1' => 'fff8dc',
  72          'cornsilk2' => 'eee8cd',
  73          'cornsilk3' => 'cdc8b1',
  74          'cornsilk4' => '8b8878',
  75          'cyan1' => '00ffff',
  76          'cyan2' => '00eeee',
  77          'cyan3' => '00cdcd',
  78          'cyan4' => '008b8b',
  79          'darkgoldenrod' => 'b8860b',
  80          'darkgoldenrod1' => 'ffb90f',
  81          'darkgoldenrod2' => 'eead0e',
  82          'darkgoldenrod3' => 'cd950c',
  83          'darkgoldenrod4' => '8b6508',
  84          'darkgreen' => '006400',
  85          'darkkhaki' => 'bdb76b',
  86          'darkolivegreen' => '556b2f',
  87          'darkolivegreen1' => 'caff70',
  88          'darkolivegreen2' => 'bcee68',
  89          'darkolivegreen3' => 'a2cd5a',
  90          'darkolivegreen4' => '6e8b3d',
  91          'darkorange' => 'ff8c00',
  92          'darkorange1' => 'ff7f00',
  93          'darkorange2' => 'ee7600',
  94          'darkorange3' => 'cd6600',
  95          'darkorange4' => '8b4500',
  96          'darkorchid' => '9932cc',
  97          'darkorchid1' => 'bf3eff',
  98          'darkorchid2' => 'b23aee',
  99          'darkorchid3' => '9a32cd',
 100          'darkorchid4' => '68228b',
 101          'darksalmon' => 'e9967a',
 102          'darkseagreen' => '8fbc8f',
 103          'darkseagreen1' => 'c1ffc1',
 104          'darkseagreen2' => 'b4eeb4',
 105          'darkseagreen3' => '9bcd9b',
 106          'darkseagreen4' => '698b69',
 107          'darkslateblue' => '483d8b',
 108          'darkslategray' => '2f4f4f',
 109          'darkslategray1' => '97ffff',
 110          'darkslategray2' => '8deeee',
 111          'darkslategray3' => '79cdcd',
 112          'darkslategray4' => '528b8b',
 113          'darkturquoise' => '00ced1',
 114          'darkviolet' => '9400d3',
 115          'deeppink1' => 'ff1493',
 116          'deeppink2' => 'ee1289',
 117          'deeppink3' => 'cd1076',
 118          'deeppink4' => '8b0a50',
 119          'deepskyblue1' => '00bfff',
 120          'deepskyblue2' => '00b2ee',
 121          'deepskyblue3' => '009acd',
 122          'deepskyblue4' => '00688b',
 123          'dimgray' => '696969',
 124          'dodgerblue1' => '1e90ff',
 125          'dodgerblue2' => '1c86ee',
 126          'dodgerblue3' => '1874cd',
 127          'dodgerblue4' => '104e8b',
 128          'firebrick' => 'b22222',
 129          'firebrick1' => 'ff3030',
 130          'firebrick2' => 'ee2c2c',
 131          'firebrick3' => 'cd2626',
 132          'firebrick4' => '8b1a1a',
 133          'floralwhite' => 'fffaf0',
 134          'forestgreen' => '228b22',
 135          'fuchsia' => 'ff00ff',
 136          'gainsboro' => 'dcdcdc',
 137          'ghostwhite' => 'f8f8ff',
 138          'gold1' => 'ffd700',
 139          'gold2' => 'eec900',
 140          'gold3' => 'cdad00',
 141          'gold4' => '8b7500',
 142          'goldenrod' => 'daa520',
 143          'goldenrod1' => 'ffc125',
 144          'goldenrod2' => 'eeb422',
 145          'goldenrod3' => 'cd9b1d',
 146          'goldenrod4' => '8b6914',
 147          'gray' => 'bebebe',
 148          'gray1' => '030303',
 149          'gray10' => '1a1a1a',
 150          'gray11' => '1c1c1c',
 151          'gray12' => '1f1f1f',
 152          'gray13' => '212121',
 153          'gray14' => '242424',
 154          'gray15' => '262626',
 155          'gray16' => '292929',
 156          'gray17' => '2b2b2b',
 157          'gray18' => '2e2e2e',
 158          'gray19' => '303030',
 159          'gray2' => '050505',
 160          'gray20' => '333333',
 161          'gray21' => '363636',
 162          'gray22' => '383838',
 163          'gray23' => '3b3b3b',
 164          'gray24' => '3d3d3d',
 165          'gray25' => '404040',
 166          'gray26' => '424242',
 167          'gray27' => '454545',
 168          'gray28' => '474747',
 169          'gray29' => '4a4a4a',
 170          'gray3' => '080808',
 171          'gray30' => '4d4d4d',
 172          'gray31' => '4f4f4f',
 173          'gray32' => '525252',
 174          'gray33' => '545454',
 175          'gray34' => '575757',
 176          'gray35' => '595959',
 177          'gray36' => '5c5c5c',
 178          'gray37' => '5e5e5e',
 179          'gray38' => '616161',
 180          'gray39' => '636363',
 181          'gray4' => '0a0a0a',
 182          'gray40' => '666666',
 183          'gray41' => '696969',
 184          'gray42' => '6b6b6b',
 185          'gray43' => '6e6e6e',
 186          'gray44' => '707070',
 187          'gray45' => '737373',
 188          'gray46' => '757575',
 189          'gray47' => '787878',
 190          'gray48' => '7a7a7a',
 191          'gray49' => '7d7d7d',
 192          'gray5' => '0d0d0d',
 193          'gray50' => '7f7f7f',
 194          'gray51' => '828282',
 195          'gray52' => '858585',
 196          'gray53' => '878787',
 197          'gray54' => '8a8a8a',
 198          'gray55' => '8c8c8c',
 199          'gray56' => '8f8f8f',
 200          'gray57' => '919191',
 201          'gray58' => '949494',
 202          'gray59' => '969696',
 203          'gray6' => '0f0f0f',
 204          'gray60' => '999999',
 205          'gray61' => '9c9c9c',
 206          'gray62' => '9e9e9e',
 207          'gray63' => 'a1a1a1',
 208          'gray64' => 'a3a3a3',
 209          'gray65' => 'a6a6a6',
 210          'gray66' => 'a8a8a8',
 211          'gray67' => 'ababab',
 212          'gray68' => 'adadad',
 213          'gray69' => 'b0b0b0',
 214          'gray7' => '121212',
 215          'gray70' => 'b3b3b3',
 216          'gray71' => 'b5b5b5',
 217          'gray72' => 'b8b8b8',
 218          'gray73' => 'bababa',
 219          'gray74' => 'bdbdbd',
 220          'gray75' => 'bfbfbf',
 221          'gray76' => 'c2c2c2',
 222          'gray77' => 'c4c4c4',
 223          'gray78' => 'c7c7c7',
 224          'gray79' => 'c9c9c9',
 225          'gray8' => '141414',
 226          'gray80' => 'cccccc',
 227          'gray81' => 'cfcfcf',
 228          'gray82' => 'd1d1d1',
 229          'gray83' => 'd4d4d4',
 230          'gray84' => 'd6d6d6',
 231          'gray85' => 'd9d9d9',
 232          'gray86' => 'dbdbdb',
 233          'gray87' => 'dedede',
 234          'gray88' => 'e0e0e0',
 235          'gray89' => 'e3e3e3',
 236          'gray9' => '171717',
 237          'gray90' => 'e5e5e5',
 238          'gray91' => 'e8e8e8',
 239          'gray92' => 'ebebeb',
 240          'gray93' => 'ededed',
 241          'gray94' => 'f0f0f0',
 242          'gray95' => 'f2f2f2',
 243          'gray97' => 'f7f7f7',
 244          'gray98' => 'fafafa',
 245          'gray99' => 'fcfcfc',
 246          'green' => '00ff00',
 247          'green1' => '00ff00',
 248          'green2' => '00ee00',
 249          'green3' => '00cd00',
 250          'green4' => '008b00',
 251          'greenyellow' => 'adff2f',
 252          'honeydew1' => 'f0fff0',
 253          'honeydew2' => 'e0eee0',
 254          'honeydew3' => 'c1cdc1',
 255          'honeydew4' => '838b83',
 256          'hotpink' => 'ff69b4',
 257          'hotpink1' => 'ff6eb4',
 258          'hotpink2' => 'ee6aa7',
 259          'hotpink3' => 'cd6090',
 260          'hotpink4' => '8b3a62',
 261          'indianred' => 'cd5c5c',
 262          'indianred1' => 'ff6a6a',
 263          'indianred2' => 'ee6363',
 264          'indianred3' => 'cd5555',
 265          'indianred4' => '8b3a3a',
 266          'ivory1' => 'fffff0',
 267          'ivory2' => 'eeeee0',
 268          'ivory3' => 'cdcdc1',
 269          'ivory4' => '8b8b83',
 270          'khaki' => 'f0e68c',
 271          'khaki1' => 'fff68f',
 272          'khaki2' => 'eee685',
 273          'khaki3' => 'cdc673',
 274          'khaki4' => '8b864e',
 275          'lavender' => 'e6e6fa',
 276          'lavenderblush1' => 'fff0f5',
 277          'lavenderblush2' => 'eee0e5',
 278          'lavenderblush3' => 'cdc1c5',
 279          'lavenderblush4' => '8b8386',
 280          'lawngreen' => '7cfc00',
 281          'lemonchiffon1' => 'fffacd',
 282          'lemonchiffon2' => 'eee9bf',
 283          'lemonchiffon3' => 'cdc9a5',
 284          'lemonchiffon4' => '8b8970',
 285          'light' => 'eedd82',
 286          'lightblue' => 'add8e6',
 287          'lightblue1' => 'bfefff',
 288          'lightblue2' => 'b2dfee',
 289          'lightblue3' => '9ac0cd',
 290          'lightblue4' => '68838b',
 291          'lightcoral' => 'f08080',
 292          'lightcyan1' => 'e0ffff',
 293          'lightcyan2' => 'd1eeee',
 294          'lightcyan3' => 'b4cdcd',
 295          'lightcyan4' => '7a8b8b',
 296          'lightgoldenrod1' => 'ffec8b',
 297          'lightgoldenrod2' => 'eedc82',
 298          'lightgoldenrod3' => 'cdbe70',
 299          'lightgoldenrod4' => '8b814c',
 300          'lightgoldenrodyellow' => 'fafad2',
 301          'lightgray' => 'd3d3d3',
 302          'lightpink' => 'ffb6c1',
 303          'lightpink1' => 'ffaeb9',
 304          'lightpink2' => 'eea2ad',
 305          'lightpink3' => 'cd8c95',
 306          'lightpink4' => '8b5f65',
 307          'lightsalmon1' => 'ffa07a',
 308          'lightsalmon2' => 'ee9572',
 309          'lightsalmon3' => 'cd8162',
 310          'lightsalmon4' => '8b5742',
 311          'lightseagreen' => '20b2aa',
 312          'lightskyblue' => '87cefa',
 313          'lightskyblue1' => 'b0e2ff',
 314          'lightskyblue2' => 'a4d3ee',
 315          'lightskyblue3' => '8db6cd',
 316          'lightskyblue4' => '607b8b',
 317          'lightslateblue' => '8470ff',
 318          'lightslategray' => '778899',
 319          'lightsteelblue' => 'b0c4de',
 320          'lightsteelblue1' => 'cae1ff',
 321          'lightsteelblue2' => 'bcd2ee',
 322          'lightsteelblue3' => 'a2b5cd',
 323          'lightsteelblue4' => '6e7b8b',
 324          'lightyellow1' => 'ffffe0',
 325          'lightyellow2' => 'eeeed1',
 326          'lightyellow3' => 'cdcdb4',
 327          'lightyellow4' => '8b8b7a',
 328          'lime' => '00ff00',
 329          'limegreen' => '32cd32',
 330          'linen' => 'faf0e6',
 331          'magenta' => 'ff00ff',
 332          'magenta2' => 'ee00ee',
 333          'magenta3' => 'cd00cd',
 334          'magenta4' => '8b008b',
 335          'maroon' => 'b03060',
 336          'maroon1' => 'ff34b3',
 337          'maroon2' => 'ee30a7',
 338          'maroon3' => 'cd2990',
 339          'maroon4' => '8b1c62',
 340          'medium' => '66cdaa',
 341          'mediumaquamarine' => '66cdaa',
 342          'mediumblue' => '0000cd',
 343          'mediumorchid' => 'ba55d3',
 344          'mediumorchid1' => 'e066ff',
 345          'mediumorchid2' => 'd15fee',
 346          'mediumorchid3' => 'b452cd',
 347          'mediumorchid4' => '7a378b',
 348          'mediumpurple' => '9370db',
 349          'mediumpurple1' => 'ab82ff',
 350          'mediumpurple2' => '9f79ee',
 351          'mediumpurple3' => '8968cd',
 352          'mediumpurple4' => '5d478b',
 353          'mediumseagreen' => '3cb371',
 354          'mediumslateblue' => '7b68ee',
 355          'mediumspringgreen' => '00fa9a',
 356          'mediumturquoise' => '48d1cc',
 357          'mediumvioletred' => 'c71585',
 358          'midnightblue' => '191970',
 359          'mintcream' => 'f5fffa',
 360          'mistyrose1' => 'ffe4e1',
 361          'mistyrose2' => 'eed5d2',
 362          'mistyrose3' => 'cdb7b5',
 363          'mistyrose4' => '8b7d7b',
 364          'moccasin' => 'ffe4b5',
 365          'navajowhite1' => 'ffdead',
 366          'navajowhite2' => 'eecfa1',
 367          'navajowhite3' => 'cdb38b',
 368          'navajowhite4' => '8b795e',
 369          'navy' => '000080',
 370          'navyblue' => '000080',
 371          'oldlace' => 'fdf5e6',
 372          'olive' => '808000',
 373          'olivedrab' => '6b8e23',
 374          'olivedrab1' => 'c0ff3e',
 375          'olivedrab2' => 'b3ee3a',
 376          'olivedrab4' => '698b22',
 377          'orange' => 'ffa500',
 378          'orange1' => 'ffa500',
 379          'orange2' => 'ee9a00',
 380          'orange3' => 'cd8500',
 381          'orange4' => '8b5a00',
 382          'orangered1' => 'ff4500',
 383          'orangered2' => 'ee4000',
 384          'orangered3' => 'cd3700',
 385          'orangered4' => '8b2500',
 386          'orchid' => 'da70d6',
 387          'orchid1' => 'ff83fa',
 388          'orchid2' => 'ee7ae9',
 389          'orchid3' => 'cd69c9',
 390          'orchid4' => '8b4789',
 391          'pale' => 'db7093',
 392          'palegoldenrod' => 'eee8aa',
 393          'palegreen' => '98fb98',
 394          'palegreen1' => '9aff9a',
 395          'palegreen2' => '90ee90',
 396          'palegreen3' => '7ccd7c',
 397          'palegreen4' => '548b54',
 398          'paleturquoise' => 'afeeee',
 399          'paleturquoise1' => 'bbffff',
 400          'paleturquoise2' => 'aeeeee',
 401          'paleturquoise3' => '96cdcd',
 402          'paleturquoise4' => '668b8b',
 403          'palevioletred' => 'db7093',
 404          'palevioletred1' => 'ff82ab',
 405          'palevioletred2' => 'ee799f',
 406          'palevioletred3' => 'cd6889',
 407          'palevioletred4' => '8b475d',
 408          'papayawhip' => 'ffefd5',
 409          'peachpuff1' => 'ffdab9',
 410          'peachpuff2' => 'eecbad',
 411          'peachpuff3' => 'cdaf95',
 412          'peachpuff4' => '8b7765',
 413          'pink' => 'ffc0cb',
 414          'pink1' => 'ffb5c5',
 415          'pink2' => 'eea9b8',
 416          'pink3' => 'cd919e',
 417          'pink4' => '8b636c',
 418          'plum' => 'dda0dd',
 419          'plum1' => 'ffbbff',
 420          'plum2' => 'eeaeee',
 421          'plum3' => 'cd96cd',
 422          'plum4' => '8b668b',
 423          'powderblue' => 'b0e0e6',
 424          'purple' => 'a020f0',
 425          'rebeccapurple' => '663399',
 426          'purple1' => '9b30ff',
 427          'purple2' => '912cee',
 428          'purple3' => '7d26cd',
 429          'purple4' => '551a8b',
 430          'red' => 'ff0000',
 431          'red1' => 'ff0000',
 432          'red2' => 'ee0000',
 433          'red3' => 'cd0000',
 434          'red4' => '8b0000',
 435          'rosybrown' => 'bc8f8f',
 436          'rosybrown1' => 'ffc1c1',
 437          'rosybrown2' => 'eeb4b4',
 438          'rosybrown3' => 'cd9b9b',
 439          'rosybrown4' => '8b6969',
 440          'royalblue' => '4169e1',
 441          'royalblue1' => '4876ff',
 442          'royalblue2' => '436eee',
 443          'royalblue3' => '3a5fcd',
 444          'royalblue4' => '27408b',
 445          'saddlebrown' => '8b4513',
 446          'salmon' => 'fa8072',
 447          'salmon1' => 'ff8c69',
 448          'salmon2' => 'ee8262',
 449          'salmon3' => 'cd7054',
 450          'salmon4' => '8b4c39',
 451          'sandybrown' => 'f4a460',
 452          'seagreen1' => '54ff9f',
 453          'seagreen2' => '4eee94',
 454          'seagreen3' => '43cd80',
 455          'seagreen4' => '2e8b57',
 456          'seashell1' => 'fff5ee',
 457          'seashell2' => 'eee5de',
 458          'seashell3' => 'cdc5bf',
 459          'seashell4' => '8b8682',
 460          'sienna' => 'a0522d',
 461          'sienna1' => 'ff8247',
 462          'sienna2' => 'ee7942',
 463          'sienna3' => 'cd6839',
 464          'sienna4' => '8b4726',
 465          'silver' => 'c0c0c0',
 466          'skyblue' => '87ceeb',
 467          'skyblue1' => '87ceff',
 468          'skyblue2' => '7ec0ee',
 469          'skyblue3' => '6ca6cd',
 470          'skyblue4' => '4a708b',
 471          'slateblue' => '6a5acd',
 472          'slateblue1' => '836fff',
 473          'slateblue2' => '7a67ee',
 474          'slateblue3' => '6959cd',
 475          'slateblue4' => '473c8b',
 476          'slategray' => '708090',
 477          'slategray1' => 'c6e2ff',
 478          'slategray2' => 'b9d3ee',
 479          'slategray3' => '9fb6cd',
 480          'slategray4' => '6c7b8b',
 481          'snow1' => 'fffafa',
 482          'snow2' => 'eee9e9',
 483          'snow3' => 'cdc9c9',
 484          'snow4' => '8b8989',
 485          'springgreen1' => '00ff7f',
 486          'springgreen2' => '00ee76',
 487          'springgreen3' => '00cd66',
 488          'springgreen4' => '008b45',
 489          'steelblue' => '4682b4',
 490          'steelblue1' => '63b8ff',
 491          'steelblue2' => '5cacee',
 492          'steelblue3' => '4f94cd',
 493          'steelblue4' => '36648b',
 494          'tan' => 'd2b48c',
 495          'tan1' => 'ffa54f',
 496          'tan2' => 'ee9a49',
 497          'tan3' => 'cd853f',
 498          'tan4' => '8b5a2b',
 499          'teal' => '008080',
 500          'thistle' => 'd8bfd8',
 501          'thistle1' => 'ffe1ff',
 502          'thistle2' => 'eed2ee',
 503          'thistle3' => 'cdb5cd',
 504          'thistle4' => '8b7b8b',
 505          'tomato1' => 'ff6347',
 506          'tomato2' => 'ee5c42',
 507          'tomato3' => 'cd4f39',
 508          'tomato4' => '8b3626',
 509          'turquoise' => '40e0d0',
 510          'turquoise1' => '00f5ff',
 511          'turquoise2' => '00e5ee',
 512          'turquoise3' => '00c5cd',
 513          'turquoise4' => '00868b',
 514          'violet' => 'ee82ee',
 515          'violetred' => 'd02090',
 516          'violetred1' => 'ff3e96',
 517          'violetred2' => 'ee3a8c',
 518          'violetred3' => 'cd3278',
 519          'violetred4' => '8b2252',
 520          'wheat' => 'f5deb3',
 521          'wheat1' => 'ffe7ba',
 522          'wheat2' => 'eed8ae',
 523          'wheat3' => 'cdba96',
 524          'wheat4' => '8b7e66',
 525          'white' => 'ffffff',
 526          'whitesmoke' => 'f5f5f5',
 527          'yellow' => 'ffff00',
 528          'yellow1' => 'ffff00',
 529          'yellow2' => 'eeee00',
 530          'yellow3' => 'cdcd00',
 531          'yellow4' => '8b8b00',
 532          'yellowgreen' => '9acd32',
 533      ];
 534  
 535      protected $face;
 536  
 537      protected $size;
 538  
 539      protected $color;
 540  
 541      protected $bold = false;
 542  
 543      protected $italic = false;
 544  
 545      protected $underline = false;
 546  
 547      protected $superscript = false;
 548  
 549      protected $subscript = false;
 550  
 551      protected $strikethrough = false;
 552  
 553      protected $startTagCallbacks = [
 554          'font' => 'startFontTag',
 555          'b' => 'startBoldTag',
 556          'strong' => 'startBoldTag',
 557          'i' => 'startItalicTag',
 558          'em' => 'startItalicTag',
 559          'u' => 'startUnderlineTag',
 560          'ins' => 'startUnderlineTag',
 561          'del' => 'startStrikethruTag',
 562          'sup' => 'startSuperscriptTag',
 563          'sub' => 'startSubscriptTag',
 564      ];
 565  
 566      protected $endTagCallbacks = [
 567          'font' => 'endFontTag',
 568          'b' => 'endBoldTag',
 569          'strong' => 'endBoldTag',
 570          'i' => 'endItalicTag',
 571          'em' => 'endItalicTag',
 572          'u' => 'endUnderlineTag',
 573          'ins' => 'endUnderlineTag',
 574          'del' => 'endStrikethruTag',
 575          'sup' => 'endSuperscriptTag',
 576          'sub' => 'endSubscriptTag',
 577          'br' => 'breakTag',
 578          'p' => 'breakTag',
 579          'h1' => 'breakTag',
 580          'h2' => 'breakTag',
 581          'h3' => 'breakTag',
 582          'h4' => 'breakTag',
 583          'h5' => 'breakTag',
 584          'h6' => 'breakTag',
 585      ];
 586  
 587      protected $stack = [];
 588  
 589      protected $stringData = '';
 590  
 591      /**
 592       * @var RichText
 593       */
 594      protected $richTextObject;
 595  
 596      protected function initialise(): void
 597      {
 598          $this->face = $this->size = $this->color = null;
 599          $this->bold = $this->italic = $this->underline = $this->superscript = $this->subscript = $this->strikethrough = false;
 600  
 601          $this->stack = [];
 602  
 603          $this->stringData = '';
 604      }
 605  
 606      /**
 607       * Parse HTML formatting and return the resulting RichText.
 608       *
 609       * @param string $html
 610       *
 611       * @return RichText
 612       */
 613      public function toRichTextObject($html)
 614      {
 615          $this->initialise();
 616  
 617          //    Create a new DOM object
 618          $dom = new DOMDocument();
 619          //    Load the HTML file into the DOM object
 620          //  Note the use of error suppression, because typically this will be an html fragment, so not fully valid markup
 621          $prefix = '<?xml encoding="UTF-8">';
 622          @$dom->loadHTML($prefix . $html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
 623          //    Discard excess white space
 624          $dom->preserveWhiteSpace = false;
 625  
 626          $this->richTextObject = new RichText();
 627          $this->parseElements($dom);
 628  
 629          // Clean any further spurious whitespace
 630          $this->cleanWhitespace();
 631  
 632          return $this->richTextObject;
 633      }
 634  
 635      protected function cleanWhitespace(): void
 636      {
 637          foreach ($this->richTextObject->getRichTextElements() as $key => $element) {
 638              $text = $element->getText();
 639              // Trim any leading spaces on the first run
 640              if ($key == 0) {
 641                  $text = ltrim($text);
 642              }
 643              // Trim any spaces immediately after a line break
 644              $text = preg_replace('/\n */mu', "\n", $text);
 645              $element->setText($text);
 646          }
 647      }
 648  
 649      protected function buildTextRun(): void
 650      {
 651          $text = $this->stringData;
 652          if (trim($text) === '') {
 653              return;
 654          }
 655  
 656          $richtextRun = $this->richTextObject->createTextRun($this->stringData);
 657          if ($this->face) {
 658              $richtextRun->getFont()->setName($this->face);
 659          }
 660          if ($this->size) {
 661              $richtextRun->getFont()->setSize($this->size);
 662          }
 663          if ($this->color) {
 664              $richtextRun->getFont()->setColor(new Color('ff' . $this->color));
 665          }
 666          if ($this->bold) {
 667              $richtextRun->getFont()->setBold(true);
 668          }
 669          if ($this->italic) {
 670              $richtextRun->getFont()->setItalic(true);
 671          }
 672          if ($this->underline) {
 673              $richtextRun->getFont()->setUnderline(Font::UNDERLINE_SINGLE);
 674          }
 675          if ($this->superscript) {
 676              $richtextRun->getFont()->setSuperscript(true);
 677          }
 678          if ($this->subscript) {
 679              $richtextRun->getFont()->setSubscript(true);
 680          }
 681          if ($this->strikethrough) {
 682              $richtextRun->getFont()->setStrikethrough(true);
 683          }
 684          $this->stringData = '';
 685      }
 686  
 687      protected function rgbToColour($rgb)
 688      {
 689          preg_match_all('/\d+/', $rgb, $values);
 690          foreach ($values[0] as &$value) {
 691              $value = str_pad(dechex($value), 2, '0', STR_PAD_LEFT);
 692          }
 693  
 694          return implode('', $values[0]);
 695      }
 696  
 697      public static function colourNameLookup(string $rgb): string
 698      {
 699          return self::$colourMap[$rgb] ?? '';
 700      }
 701  
 702      protected function startFontTag($tag): void
 703      {
 704          foreach ($tag->attributes as $attribute) {
 705              $attributeName = strtolower($attribute->name);
 706              $attributeValue = $attribute->value;
 707  
 708              if ($attributeName == 'color') {
 709                  if (preg_match('/rgb\s*\(/', $attributeValue)) {
 710                      $this->$attributeName = $this->rgbToColour($attributeValue);
 711                  } elseif (strpos(trim($attributeValue), '#') === 0) {
 712                      $this->$attributeName = ltrim($attributeValue, '#');
 713                  } else {
 714                      $this->$attributeName = $this->colourNameLookup($attributeValue);
 715                  }
 716              } else {
 717                  $this->$attributeName = $attributeValue;
 718              }
 719          }
 720      }
 721  
 722      protected function endFontTag(): void
 723      {
 724          $this->face = $this->size = $this->color = null;
 725      }
 726  
 727      protected function startBoldTag(): void
 728      {
 729          $this->bold = true;
 730      }
 731  
 732      protected function endBoldTag(): void
 733      {
 734          $this->bold = false;
 735      }
 736  
 737      protected function startItalicTag(): void
 738      {
 739          $this->italic = true;
 740      }
 741  
 742      protected function endItalicTag(): void
 743      {
 744          $this->italic = false;
 745      }
 746  
 747      protected function startUnderlineTag(): void
 748      {
 749          $this->underline = true;
 750      }
 751  
 752      protected function endUnderlineTag(): void
 753      {
 754          $this->underline = false;
 755      }
 756  
 757      protected function startSubscriptTag(): void
 758      {
 759          $this->subscript = true;
 760      }
 761  
 762      protected function endSubscriptTag(): void
 763      {
 764          $this->subscript = false;
 765      }
 766  
 767      protected function startSuperscriptTag(): void
 768      {
 769          $this->superscript = true;
 770      }
 771  
 772      protected function endSuperscriptTag(): void
 773      {
 774          $this->superscript = false;
 775      }
 776  
 777      protected function startStrikethruTag(): void
 778      {
 779          $this->strikethrough = true;
 780      }
 781  
 782      protected function endStrikethruTag(): void
 783      {
 784          $this->strikethrough = false;
 785      }
 786  
 787      protected function breakTag(): void
 788      {
 789          $this->stringData .= "\n";
 790      }
 791  
 792      protected function parseTextNode(DOMText $textNode): void
 793      {
 794          $domText = preg_replace(
 795              '/\s+/u',
 796              ' ',
 797              str_replace(["\r", "\n"], ' ', $textNode->nodeValue)
 798          );
 799          $this->stringData .= $domText;
 800          $this->buildTextRun();
 801      }
 802  
 803      /**
 804       * @param string $callbackTag
 805       */
 806      protected function handleCallback(DOMElement $element, $callbackTag, array $callbacks): void
 807      {
 808          if (isset($callbacks[$callbackTag])) {
 809              $elementHandler = $callbacks[$callbackTag];
 810              if (method_exists($this, $elementHandler)) {
 811                  call_user_func([$this, $elementHandler], $element);
 812              }
 813          }
 814      }
 815  
 816      protected function parseElementNode(DOMElement $element): void
 817      {
 818          $callbackTag = strtolower($element->nodeName);
 819          $this->stack[] = $callbackTag;
 820  
 821          $this->handleCallback($element, $callbackTag, $this->startTagCallbacks);
 822  
 823          $this->parseElements($element);
 824          array_pop($this->stack);
 825  
 826          $this->handleCallback($element, $callbackTag, $this->endTagCallbacks);
 827      }
 828  
 829      protected function parseElements(DOMNode $element): void
 830      {
 831          foreach ($element->childNodes as $child) {
 832              if ($child instanceof DOMText) {
 833                  $this->parseTextNode($child);
 834              } elseif ($child instanceof DOMElement) {
 835                  $this->parseElementNode($child);
 836              }
 837          }
 838      }
 839  }