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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\Dom; |
| 15 | |
| 16 | use RecursiveIteratorIterator; |
| 17 | |
| 18 | /** |
| 19 | * Dom child class |
| 20 | * |
| 21 | * @category Pop |
| 22 | * @package Pop\Dom |
| 23 | * @author Nick Sagona, III <dev@nolainteractive.com> |
| 24 | * @copyright Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
| 25 | * @license http://www.popphp.org/license New BSD License |
| 26 | * @version 4.0.0 |
| 27 | */ |
| 28 | class Child extends AbstractNode |
| 29 | { |
| 30 | |
| 31 | /** |
| 32 | * Child element node name |
| 33 | * @var ?string |
| 34 | */ |
| 35 | protected ?string $nodeName = null; |
| 36 | |
| 37 | /** |
| 38 | * Child element node value |
| 39 | * @var ?string |
| 40 | */ |
| 41 | protected ?string $nodeValue = null; |
| 42 | |
| 43 | /** |
| 44 | * Child element node value CDATA flag |
| 45 | * @var bool |
| 46 | */ |
| 47 | protected bool $cData = false; |
| 48 | |
| 49 | /** |
| 50 | * Flag to render children before node value or not |
| 51 | * @var bool |
| 52 | */ |
| 53 | protected bool $childrenFirst = false; |
| 54 | |
| 55 | /** |
| 56 | * Child element attributes |
| 57 | * @var array |
| 58 | */ |
| 59 | protected array $attributes = []; |
| 60 | |
| 61 | /** |
| 62 | * Flag to preserve whitespace |
| 63 | * @var bool |
| 64 | */ |
| 65 | protected bool $preserveWhiteSpace = true; |
| 66 | |
| 67 | /** |
| 68 | * Constructor |
| 69 | * |
| 70 | * Instantiate the DOM element object |
| 71 | * |
| 72 | * @param string $name |
| 73 | * @param ?string $value |
| 74 | * @param array $options |
| 75 | */ |
| 76 | public function __construct(string $name, ?string $value = null, array $options = []) |
| 77 | { |
| 78 | $this->nodeName = $name; |
| 79 | $this->nodeValue = $value; |
| 80 | |
| 81 | if (isset($options['cData'])) { |
| 82 | $this->cData = (bool)$options['cData']; |
| 83 | } |
| 84 | if (isset($options['childrenFirst'])) { |
| 85 | $this->childrenFirst = (bool)$options['childrenFirst']; |
| 86 | } |
| 87 | if (isset($options['indent'])) { |
| 88 | $this->indent = (string)$options['indent']; |
| 89 | } |
| 90 | if (isset($options['attributes'])) { |
| 91 | $this->setAttributes($options['attributes']); |
| 92 | } |
| 93 | if (isset($options['whitespace'])) { |
| 94 | $this->preserveWhiteSpace($options['whitespace']); |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * Static factory method to create a child object |
| 100 | * |
| 101 | * @param string $name |
| 102 | * @param ?string $value |
| 103 | * @param array $options |
| 104 | * @return Child |
| 105 | */ |
| 106 | public static function create(string $name, ?string $value = null, array $options = []) |
| 107 | { |
| 108 | return new self($name, $value, $options); |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * Static method to parse an XML/HTML string |
| 113 | * |
| 114 | * @param string $string |
| 115 | * @return Child|array |
| 116 | */ |
| 117 | public static function parseString(string $string): Child|array |
| 118 | { |
| 119 | $doc = new \DOMDocument(); |
| 120 | $doc->loadHTML($string); |
| 121 | |
| 122 | $dit = new RecursiveIteratorIterator( |
| 123 | new DomIterator($doc), |
| 124 | RecursiveIteratorIterator::SELF_FIRST |
| 125 | ); |
| 126 | |
| 127 | $parent = null; |
| 128 | $child = null; |
| 129 | $lastDepth = 0; |
| 130 | $endElement = null; |
| 131 | $partial = ((stripos($string, '<html') === false) || (stripos($string, '<body') === false)); |
| 132 | |
| 133 | foreach($dit as $node) { |
| 134 | if (($node->nodeType == XML_ELEMENT_NODE) || ($node->nodeType == XML_TEXT_NODE)) { |
| 135 | $attribs = []; |
| 136 | if ($node->attributes !== null) { |
| 137 | for ($i = 0; $i < $node->attributes->length; $i++) { |
| 138 | $name = $node->attributes->item($i)->name; |
| 139 | $attribs[$name] = $node->getAttribute($name); |
| 140 | } |
| 141 | } |
| 142 | if ($parent === null) { |
| 143 | $parent = new Child($node->nodeName); |
| 144 | } else { |
| 145 | if (($node->nodeType == XML_TEXT_NODE) && ($child !== null)) { |
| 146 | $nodeValue = trim($node->nodeValue); |
| 147 | if (!empty($nodeValue)) { |
| 148 | if (($endElement) && ($child->getParent() !== null) && ($node->previousSibling !== null)) { |
| 149 | $prev = $node->previousSibling->nodeName; |
| 150 | $par = $child->getParent(); |
| 151 | while (($par !== null) && ($prev != $par->getNodeName())) { |
| 152 | $par = $par->getParent(); |
| 153 | } |
| 154 | if ($par === null) { |
| 155 | $par = $child->getParent(); |
| 156 | } else { |
| 157 | $par = $par->getParent(); |
| 158 | } |
| 159 | $par->addChild(new Child('#text', $nodeValue)); |
| 160 | } else { |
| 161 | $child->setNodeValue($nodeValue); |
| 162 | $endElement = true; |
| 163 | } |
| 164 | } |
| 165 | } else { |
| 166 | // down |
| 167 | if ($dit->getDepth() > $lastDepth) { |
| 168 | if ($child !== null) { |
| 169 | $parent = $child; |
| 170 | } |
| 171 | $child = new Child($node->nodeName); |
| 172 | $parent->addChild($child); |
| 173 | $endElement = false; |
| 174 | // up |
| 175 | } else if ($dit->getDepth() < $lastDepth) { |
| 176 | while ($parent->getNodeName() != $node->parentNode->nodeName) { |
| 177 | $parent = $parent->getParent(); |
| 178 | } |
| 179 | //$parent = $parent->getParent(); |
| 180 | $child = new Child($node->nodeName); |
| 181 | $parent->addChild($child); |
| 182 | $endElement = false; |
| 183 | // next (sibling) |
| 184 | } else if ($dit->getDepth() == $lastDepth) { |
| 185 | $child = new Child($node->nodeName); |
| 186 | $parent->addChild($child); |
| 187 | $endElement = false; |
| 188 | } |
| 189 | if (!empty($attribs)) { |
| 190 | $child->setAttributes($attribs); |
| 191 | } |
| 192 | $lastDepth = $dit->getDepth(); |
| 193 | } |
| 194 | } |
| 195 | } |
| 196 | } |
| 197 | while ($parent->getParent() !== null) { |
| 198 | $parent = $parent->getParent(); |
| 199 | } |
| 200 | |
| 201 | if ($partial) { |
| 202 | $parent = $parent->getChild(0); |
| 203 | if (strtolower($parent->getNodeName()) == 'body') { |
| 204 | $parent = $parent->getChildNodes(); |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | return $parent; |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Static method to parse an XML/HTML string from a file |
| 213 | * |
| 214 | * @param string $file |
| 215 | * @throws Exception |
| 216 | * @return Child |
| 217 | */ |
| 218 | public static function parseFile(string $file): Child |
| 219 | { |
| 220 | if (!file_exists($file)) { |
| 221 | throw new Exception('Error: That file does not exist.'); |
| 222 | } |
| 223 | return self::parseString(file_get_contents($file)); |
| 224 | } |
| 225 | |
| 226 | /** |
| 227 | * Return the child node name |
| 228 | * |
| 229 | * @return string|null |
| 230 | */ |
| 231 | public function getNodeName(): string|null |
| 232 | { |
| 233 | return $this->nodeName; |
| 234 | } |
| 235 | |
| 236 | /** |
| 237 | * Return the child node value |
| 238 | * |
| 239 | * @return string|null |
| 240 | */ |
| 241 | public function getNodeValue(): string|null |
| 242 | { |
| 243 | return $this->nodeValue; |
| 244 | } |
| 245 | |
| 246 | /** |
| 247 | * Return the child node content, including tags, etc |
| 248 | * |
| 249 | * @param bool $ignoreWhiteSpace |
| 250 | * @return string |
| 251 | */ |
| 252 | public function getNodeContent(bool $ignoreWhiteSpace = false): string |
| 253 | { |
| 254 | $content = $this->render(0, null, true); |
| 255 | if ($ignoreWhiteSpace) { |
| 256 | $content = preg_replace('/\s+/', ' ', str_replace(["\n", "\r", "\t"], ["", "", ""], trim($content))); |
| 257 | $content = preg_replace('/\s*\.\s*/', '. ', $content); |
| 258 | $content = preg_replace('/\s*\?\s*/', '? ', $content); |
| 259 | $content = preg_replace('/\s*\!\s*/', '! ', $content); |
| 260 | $content = preg_replace('/\s*,\s*/', ', ', $content); |
| 261 | $content = preg_replace('/\s*\:\s*/', ': ', $content); |
| 262 | $content = preg_replace('/\s*\;\s*/', '; ', $content); |
| 263 | } |
| 264 | return $content; |
| 265 | } |
| 266 | |
| 267 | /** |
| 268 | * Return the child node content, including tags, etc |
| 269 | * |
| 270 | * @param bool $ignoreWhiteSpace |
| 271 | * @return string |
| 272 | */ |
| 273 | public function getTextContent(bool $ignoreWhiteSpace = false): string |
| 274 | { |
| 275 | $content = strip_tags($this->render(0, null, true)); |
| 276 | |
| 277 | if ($ignoreWhiteSpace) { |
| 278 | $content = preg_replace('/\s+/', ' ', str_replace(["\n", "\r", "\t"], ["", "", ""], trim($content))); |
| 279 | $content = preg_replace('/\s*\.\s*/', '. ', $content); |
| 280 | $content = preg_replace('/\s*\?\s*/', '? ', $content); |
| 281 | $content = preg_replace('/\s*\!\s*/', '! ', $content); |
| 282 | $content = preg_replace('/\s*,\s*/', ', ', $content); |
| 283 | $content = preg_replace('/\s*\:\s*/', ': ', $content); |
| 284 | $content = preg_replace('/\s*\;\s*/', '; ', $content); |
| 285 | } |
| 286 | return $content; |
| 287 | } |
| 288 | |
| 289 | /** |
| 290 | * Set the child node name |
| 291 | * |
| 292 | * @param string $name |
| 293 | * @return Child |
| 294 | */ |
| 295 | public function setNodeName(string $name): Child |
| 296 | { |
| 297 | $this->nodeName = $name; |
| 298 | return $this; |
| 299 | } |
| 300 | |
| 301 | /** |
| 302 | * Set the child node value |
| 303 | * |
| 304 | * @param string $value |
| 305 | * @return Child |
| 306 | */ |
| 307 | public function setNodeValue(string $value): Child |
| 308 | { |
| 309 | $this->nodeValue = $value; |
| 310 | return $this; |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * Add to the child node value |
| 315 | * |
| 316 | * @param string $value |
| 317 | * @return Child |
| 318 | */ |
| 319 | public function addNodeValue(string $value): Child |
| 320 | { |
| 321 | $this->nodeValue .= $value; |
| 322 | return $this; |
| 323 | } |
| 324 | |
| 325 | /** |
| 326 | * Set the child node value as CDATA |
| 327 | * |
| 328 | * @param bool $cData |
| 329 | * @return Child |
| 330 | */ |
| 331 | public function setAsCData(bool $cData = true): Child |
| 332 | { |
| 333 | $this->cData = $cData; |
| 334 | return $this; |
| 335 | } |
| 336 | |
| 337 | /** |
| 338 | * Determine if the child node value is CDATA |
| 339 | * |
| 340 | * @return bool |
| 341 | */ |
| 342 | public function isCData(): bool |
| 343 | { |
| 344 | return $this->cData; |
| 345 | } |
| 346 | |
| 347 | /** |
| 348 | * Set an attribute for the child element object |
| 349 | * |
| 350 | * @param string $a |
| 351 | * @param string $v |
| 352 | * @return Child |
| 353 | */ |
| 354 | public function setAttribute(string $a, string $v): Child |
| 355 | { |
| 356 | $this->attributes[$a] = $v; |
| 357 | return $this; |
| 358 | } |
| 359 | |
| 360 | /** |
| 361 | * Set an attribute or attributes for the child element object |
| 362 | * |
| 363 | * @param array $a |
| 364 | * @return Child |
| 365 | */ |
| 366 | public function setAttributes(array $a): Child |
| 367 | { |
| 368 | foreach ($a as $name => $value) { |
| 369 | $this->attributes[$name] = $value; |
| 370 | } |
| 371 | return $this; |
| 372 | } |
| 373 | |
| 374 | /** |
| 375 | * Determine if the child object has an attribute |
| 376 | * |
| 377 | * @param string $name |
| 378 | * @return bool |
| 379 | */ |
| 380 | public function hasAttribute(string $name): bool |
| 381 | { |
| 382 | return (isset($this->attributes[$name])); |
| 383 | } |
| 384 | |
| 385 | /** |
| 386 | * Determine if the child object has attributes |
| 387 | * |
| 388 | * @return bool |
| 389 | */ |
| 390 | public function hasAttributes(): bool |
| 391 | { |
| 392 | return (count($this->attributes) > 0); |
| 393 | } |
| 394 | |
| 395 | /** |
| 396 | * Get the attribute of the child object |
| 397 | * |
| 398 | * @param string $name |
| 399 | * @return string|null |
| 400 | */ |
| 401 | public function getAttribute(string $name): string|null |
| 402 | { |
| 403 | return $this->attributes[$name] ?? null; |
| 404 | } |
| 405 | |
| 406 | /** |
| 407 | * Get the attributes of the child object |
| 408 | * |
| 409 | * @return array |
| 410 | */ |
| 411 | public function getAttributes(): array |
| 412 | { |
| 413 | return $this->attributes; |
| 414 | } |
| 415 | |
| 416 | /** |
| 417 | * Remove an attribute from the child element object |
| 418 | * |
| 419 | * @param string $a |
| 420 | * @return Child |
| 421 | */ |
| 422 | public function removeAttribute(string $a): Child |
| 423 | { |
| 424 | if (isset($this->attributes[$a])) { |
| 425 | unset($this->attributes[$a]); |
| 426 | } |
| 427 | return $this; |
| 428 | } |
| 429 | |
| 430 | /** |
| 431 | * Determine if child nodes render first, before the node value |
| 432 | * |
| 433 | * @return bool |
| 434 | */ |
| 435 | public function isChildrenFirst(): bool |
| 436 | { |
| 437 | return $this->childrenFirst; |
| 438 | } |
| 439 | |
| 440 | /** |
| 441 | * Set whether child nodes render first, before the node value |
| 442 | * |
| 443 | * @param bool $first |
| 444 | * @return Child |
| 445 | */ |
| 446 | public function setChildrenFirst(bool $first = true): Child |
| 447 | { |
| 448 | $this->childrenFirst = $first; |
| 449 | return $this; |
| 450 | } |
| 451 | |
| 452 | /** |
| 453 | * Set whether to preserve whitespace |
| 454 | * |
| 455 | * @param bool $preserve |
| 456 | * @return Child |
| 457 | */ |
| 458 | public function preserveWhiteSpace(bool $preserve = true): Child |
| 459 | { |
| 460 | $this->preserveWhiteSpace = $preserve; |
| 461 | return $this; |
| 462 | } |
| 463 | |
| 464 | /** |
| 465 | * Render the child and its child nodes. |
| 466 | * |
| 467 | * @param int $depth |
| 468 | * @param ?string $indent |
| 469 | * @param bool $inner |
| 470 | * @return string|null |
| 471 | */ |
| 472 | public function render(int $depth = 0, ?string $indent = null, bool $inner = false): string|null |
| 473 | { |
| 474 | // Initialize child object properties and variables. |
| 475 | $this->output = ''; |
| 476 | $this->indent = ($this->indent === null) ? str_repeat(' ', $depth) : $this->indent; |
| 477 | $attribs = ''; |
| 478 | $attribAry = []; |
| 479 | |
| 480 | if ($this->cData) { |
| 481 | $this->nodeValue = '<![CDATA[' . $this->nodeValue . ']]>'; |
| 482 | } |
| 483 | |
| 484 | // Format child attributes, if applicable. |
| 485 | if ($this->hasAttributes()) { |
| 486 | $attributes = $this->getAttributes(); |
| 487 | foreach ($attributes as $key => $value) { |
| 488 | $attribAry[] = $key . "=\"" . $value . "\""; |
| 489 | } |
| 490 | $attribs = ' ' . implode(' ', $attribAry); |
| 491 | } |
| 492 | |
| 493 | // Initialize the node. |
| 494 | if ($this->nodeName == '#text') { |
| 495 | $this->output .= ((!$this->preserveWhiteSpace) ? |
| 496 | '' : "{$indent}{$this->indent}") . $this->nodeValue . ((!$this->preserveWhiteSpace) ? '' : "\n"); |
| 497 | } else { |
| 498 | if (!$inner) { |
| 499 | $this->output .= ((!$this->preserveWhiteSpace) ? |
| 500 | '' : "{$indent}{$this->indent}") . "<{$this->nodeName}{$attribs}"; |
| 501 | } |
| 502 | |
| 503 | if (($indent === null) && ($this->indent !== null)) { |
| 504 | $indent = $this->indent; |
| 505 | $origIndent = $this->indent; |
| 506 | } else { |
| 507 | $origIndent = $indent . $this->indent; |
| 508 | } |
| 509 | |
| 510 | // If current child element has child nodes, format and render. |
| 511 | if (count($this->childNodes) > 0) { |
| 512 | if (!$inner) { |
| 513 | $this->output .= ">"; |
| 514 | if ($this->preserveWhiteSpace) { |
| 515 | $this->output .= "\n"; |
| 516 | } |
| 517 | } |
| 518 | $newDepth = $depth + 1; |
| 519 | |
| 520 | // Render node value before the child nodes. |
| 521 | if (!$this->childrenFirst) { |
| 522 | if ($this->nodeValue !== null) { |
| 523 | $this->output .= ((!$this->preserveWhiteSpace) ? |
| 524 | '' : str_repeat(' ', $newDepth) . "{$indent}") . "{$this->nodeValue}\n"; |
| 525 | } |
| 526 | foreach ($this->childNodes as $child) { |
| 527 | $this->output .= $child->render($newDepth, $indent); |
| 528 | } |
| 529 | if (!$inner) { |
| 530 | if (!$this->preserveWhiteSpace) { |
| 531 | $this->output .= "</{$this->nodeName}>"; |
| 532 | } else { |
| 533 | $this->output .= "{$origIndent}</{$this->nodeName}>\n"; |
| 534 | } |
| 535 | } |
| 536 | // Else, render child nodes first, then node value. |
| 537 | } else { |
| 538 | foreach ($this->childNodes as $child) { |
| 539 | $this->output .= $child->render($newDepth, $indent); |
| 540 | } |
| 541 | if (!$inner) { |
| 542 | if ($this->nodeValue !== null) { |
| 543 | $this->output .= ((!$this->preserveWhiteSpace) ? |
| 544 | '' : str_repeat(' ', $newDepth) . "{$indent}") . |
| 545 | "{$this->nodeValue}" . ((!$this->preserveWhiteSpace) ? |
| 546 | '' : "\n{$origIndent}") . "</{$this->nodeName}>" . (($this->preserveWhiteSpace) ? '' : "\n"); |
| 547 | } else { |
| 548 | $this->output .= ((!$this->preserveWhiteSpace) ? |
| 549 | '' : "{$origIndent}") . "</{$this->nodeName}>" . ((!$this->preserveWhiteSpace) ? '' : "\n"); |
| 550 | } |
| 551 | } |
| 552 | } |
| 553 | // Else, render the child node. |
| 554 | } else { |
| 555 | if (!$inner) { |
| 556 | if (($this->nodeValue !== null) || ($this->nodeName == 'textarea')) { |
| 557 | $this->output .= ">"; |
| 558 | $this->output .= "{$this->nodeValue}</{$this->nodeName}>" . ((!$this->preserveWhiteSpace) ? '' : "\n"); |
| 559 | } else { |
| 560 | $this->output .= " />"; |
| 561 | if ($this->preserveWhiteSpace) { |
| 562 | $this->output .= "\n"; |
| 563 | } |
| 564 | } |
| 565 | } else if (!empty($this->nodeValue)) { |
| 566 | $this->output .= $this->nodeValue; |
| 567 | } |
| 568 | } |
| 569 | } |
| 570 | |
| 571 | return $this->output; |
| 572 | } |
| 573 | |
| 574 | /** |
| 575 | * Render Dom child object to string |
| 576 | * |
| 577 | * @return string |
| 578 | */ |
| 579 | public function __toString(): string |
| 580 | { |
| 581 | return $this->render(); |
| 582 | } |
| 583 | |
| 584 | } |