simplehtmldom.php
1742 lines
| 1 | <?php |
| 2 | /** |
| 3 | * Website: http://sourceforge.net/projects/simplehtmldom/ |
| 4 | * Additional projects that may be used: http://sourceforge.net/projects/debugobject/ |
| 5 | * Acknowledge: Jose Solorzano (https://sourceforge.net/projects/php-html/) |
| 6 | * Contributions by: |
| 7 | * Yousuke Kumakura (Attribute filters) |
| 8 | * Vadim Voituk (Negative indexes supports of "find" method) |
| 9 | * Antcs (Constructor with automatically load contents either text or file/url) |
| 10 | * |
| 11 | * all affected sections have comments starting with "PaperG" |
| 12 | * |
| 13 | * Paperg - Added case insensitive testing of the value of the selector. |
| 14 | * Paperg - Added tag_start for the starting index of tags - NOTE: This works but not accurately. |
| 15 | * This tag_start gets counted AFTER \r\n have been crushed out, and after the remove_noice calls so it will not reflect the REAL position of the tag in the source, |
| 16 | * it will almost always be smaller by some amount. |
| 17 | * We use this to determine how far into the file the tag in question is. This "percentage will never be accurate as the $dom->size is the "real" number of bytes the dom was created from. |
| 18 | * but for most purposes, it's a really good estimation. |
| 19 | * Paperg - Added the forceTagsClosed to the dom constructor. Forcing tags closed is great for malformed html, but it CAN lead to parsing errors. |
| 20 | * Allow the user to tell us how much they trust the html. |
| 21 | * Paperg add the text and plaintext to the selectors for the find syntax. plaintext implies text in the innertext of a node. text implies that the tag is a text node. |
| 22 | * This allows for us to find tags based on the text they contain. |
| 23 | * Create find_ancestor_tag to see if a tag is - at any level - inside of another specific tag. |
| 24 | * Paperg: added parse_charset so that we know about the character set of the source document. |
| 25 | * NOTE: If the user's system has a routine called get_last_retrieve_url_contents_content_type availalbe, we will assume it's returning the content-type header from the |
| 26 | * last transfer or curl_exec, and we will parse that and use it in preference to any other method of charset detection. |
| 27 | * |
| 28 | * Found infinite loop in the case of broken html in restore_noise. Rewrote to protect from that. |
| 29 | * PaperG (John Schlick) Added get_display_size for "IMG" tags. |
| 30 | * |
| 31 | * Licensed under The MIT License |
| 32 | * Redistributions of files must retain the above copyright notice. |
| 33 | * |
| 34 | * @author S.C. Chen <me578022@gmail.com> |
| 35 | * @author John Schlick |
| 36 | * @author Rus Carroll |
| 37 | * @version 1.5 ($Rev: 210 $) |
| 38 | * @package PlaceLocalInclude |
| 39 | * @subpackage simple_html_dom |
| 40 | */ |
| 41 | |
| 42 | /** |
| 43 | * All of the Defines for the classes below. |
| 44 | * @author S.C. Chen <me578022@gmail.com> |
| 45 | */ |
| 46 | define('HDOM_TYPE_ELEMENT', 1); |
| 47 | define('HDOM_TYPE_COMMENT', 2); |
| 48 | define('HDOM_TYPE_TEXT', 3); |
| 49 | define('HDOM_TYPE_ENDTAG', 4); |
| 50 | define('HDOM_TYPE_ROOT', 5); |
| 51 | define('HDOM_TYPE_UNKNOWN', 6); |
| 52 | define('HDOM_QUOTE_DOUBLE', 0); |
| 53 | define('HDOM_QUOTE_SINGLE', 1); |
| 54 | define('HDOM_QUOTE_NO', 3); |
| 55 | define('HDOM_INFO_BEGIN', 0); |
| 56 | define('HDOM_INFO_END', 1); |
| 57 | define('HDOM_INFO_QUOTE', 2); |
| 58 | define('HDOM_INFO_SPACE', 3); |
| 59 | define('HDOM_INFO_TEXT', 4); |
| 60 | define('HDOM_INFO_INNER', 5); |
| 61 | define('HDOM_INFO_OUTER', 6); |
| 62 | define('HDOM_INFO_ENDSPACE',7); |
| 63 | define('DEFAULT_TARGET_CHARSET', 'UTF-8'); |
| 64 | define('DEFAULT_BR_TEXT', "\r\n"); |
| 65 | define('DEFAULT_SPAN_TEXT', " "); |
| 66 | define('MAX_FILE_SIZE', 600000); |
| 67 | // helper functions |
| 68 | // ----------------------------------------------------------------------------- |
| 69 | // get html dom from file |
| 70 | // $maxlen is defined in the code as PHP_STREAM_COPY_ALL which is defined as -1. |
| 71 | function file_get_html($url, $use_include_path = false, $context=null, $offset = -1, $maxLen=-1, $lowercase = true, $forceTagsClosed=true, $target_charset = DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT) |
| 72 | { |
| 73 | // We DO force the tags to be terminated. |
| 74 | $dom = new simple_html_dom(null, $lowercase, $forceTagsClosed, $target_charset, $stripRN, $defaultBRText, $defaultSpanText); |
| 75 | // For sourceforge users: uncomment the next line and comment the retreive_url_contents line 2 lines down if it is not already done. |
| 76 | $contents = file_get_contents($url, $use_include_path, $context, $offset); |
| 77 | // Paperg - use our own mechanism for getting the contents as we want to control the timeout. |
| 78 | //$contents = retrieve_url_contents($url); |
| 79 | if (empty($contents) || strlen($contents) > MAX_FILE_SIZE) |
| 80 | { |
| 81 | return false; |
| 82 | } |
| 83 | // The second parameter can force the selectors to all be lowercase. |
| 84 | $dom->load($contents, $lowercase, $stripRN); |
| 85 | return $dom; |
| 86 | } |
| 87 | |
| 88 | // get html dom from string |
| 89 | function str_get_html($str, $lowercase=true, $forceTagsClosed=true, $target_charset = DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT) |
| 90 | { |
| 91 | $dom = new simple_html_dom(null, $lowercase, $forceTagsClosed, $target_charset, $stripRN, $defaultBRText, $defaultSpanText); |
| 92 | if (empty($str) || strlen($str) > MAX_FILE_SIZE) |
| 93 | { |
| 94 | $dom->clear(); |
| 95 | return false; |
| 96 | } |
| 97 | $dom->load($str, $lowercase, $stripRN); |
| 98 | return $dom; |
| 99 | } |
| 100 | |
| 101 | // dump html dom tree |
| 102 | function dump_html_tree($node, $show_attr=true, $deep=0) |
| 103 | { |
| 104 | $node->dump($node); |
| 105 | } |
| 106 | |
| 107 | |
| 108 | /** |
| 109 | * simple html dom node |
| 110 | * PaperG - added ability for "find" routine to lowercase the value of the selector. |
| 111 | * PaperG - added $tag_start to track the start position of the tag in the total byte index |
| 112 | * |
| 113 | * @package PlaceLocalInclude |
| 114 | */ |
| 115 | class simple_html_dom_node |
| 116 | { |
| 117 | public $nodetype = HDOM_TYPE_TEXT; |
| 118 | public $tag = 'text'; |
| 119 | public $attr = array(); |
| 120 | public $children = array(); |
| 121 | public $nodes = array(); |
| 122 | public $parent = null; |
| 123 | // The "info" array - see HDOM_INFO_... for what each element contains. |
| 124 | public $_ = array(); |
| 125 | public $tag_start = 0; |
| 126 | private $dom = null; |
| 127 | |
| 128 | function __construct($dom) |
| 129 | { |
| 130 | $this->dom = $dom; |
| 131 | $dom->nodes[] = $this; |
| 132 | } |
| 133 | |
| 134 | function __destruct() |
| 135 | { |
| 136 | $this->clear(); |
| 137 | } |
| 138 | |
| 139 | function __toString() |
| 140 | { |
| 141 | return $this->outertext(); |
| 142 | } |
| 143 | |
| 144 | // clean up memory due to php5 circular references memory leak... |
| 145 | function clear() |
| 146 | { |
| 147 | $this->dom = null; |
| 148 | $this->nodes = null; |
| 149 | $this->parent = null; |
| 150 | $this->children = null; |
| 151 | } |
| 152 | |
| 153 | // dump node's tree |
| 154 | function dump($show_attr=true, $deep=0) |
| 155 | { |
| 156 | $lead = str_repeat(' ', $deep); |
| 157 | |
| 158 | echo $lead.$this->tag; |
| 159 | if ($show_attr && count($this->attr)>0) |
| 160 | { |
| 161 | echo '('; |
| 162 | foreach ($this->attr as $k=>$v) |
| 163 | echo "[$k]=>\"".$this->$k.'", '; |
| 164 | echo ')'; |
| 165 | } |
| 166 | echo "\n"; |
| 167 | |
| 168 | if ($this->nodes) |
| 169 | { |
| 170 | foreach ($this->nodes as $c) |
| 171 | { |
| 172 | $c->dump($show_attr, $deep+1); |
| 173 | } |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | |
| 178 | // Debugging function to dump a single dom node with a bunch of information about it. |
| 179 | function dump_node($echo=true) |
| 180 | { |
| 181 | |
| 182 | $string = $this->tag; |
| 183 | if (count($this->attr)>0) |
| 184 | { |
| 185 | $string .= '('; |
| 186 | foreach ($this->attr as $k=>$v) |
| 187 | { |
| 188 | $string .= "[$k]=>\"".$this->$k.'", '; |
| 189 | } |
| 190 | $string .= ')'; |
| 191 | } |
| 192 | if (count($this->_)>0) |
| 193 | { |
| 194 | $string .= ' $_ ('; |
| 195 | foreach ($this->_ as $k=>$v) |
| 196 | { |
| 197 | if (is_array($v)) |
| 198 | { |
| 199 | $string .= "[$k]=>("; |
| 200 | foreach ($v as $k2=>$v2) |
| 201 | { |
| 202 | $string .= "[$k2]=>\"".$v2.'", '; |
| 203 | } |
| 204 | $string .= ")"; |
| 205 | } else { |
| 206 | $string .= "[$k]=>\"".$v.'", '; |
| 207 | } |
| 208 | } |
| 209 | $string .= ")"; |
| 210 | } |
| 211 | |
| 212 | if (isset($this->text)) |
| 213 | { |
| 214 | $string .= " text: (" . $this->text . ")"; |
| 215 | } |
| 216 | |
| 217 | $string .= " HDOM_INNER_INFO: '"; |
| 218 | if (isset($node->_[HDOM_INFO_INNER])) |
| 219 | { |
| 220 | $string .= $node->_[HDOM_INFO_INNER] . "'"; |
| 221 | } |
| 222 | else |
| 223 | { |
| 224 | $string .= ' NULL '; |
| 225 | } |
| 226 | |
| 227 | $string .= " children: " . count($this->children); |
| 228 | $string .= " nodes: " . count($this->nodes); |
| 229 | $string .= " tag_start: " . $this->tag_start; |
| 230 | $string .= "\n"; |
| 231 | |
| 232 | if ($echo) |
| 233 | { |
| 234 | echo $string; |
| 235 | return; |
| 236 | } |
| 237 | else |
| 238 | { |
| 239 | return $string; |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | // returns the parent of node |
| 244 | // If a node is passed in, it will reset the parent of the current node to that one. |
| 245 | function parent($parent=null) |
| 246 | { |
| 247 | // I am SURE that this doesn't work properly. |
| 248 | // It fails to unset the current node from it's current parents nodes or children list first. |
| 249 | if ($parent !== null) |
| 250 | { |
| 251 | $this->parent = $parent; |
| 252 | $this->parent->nodes[] = $this; |
| 253 | $this->parent->children[] = $this; |
| 254 | } |
| 255 | |
| 256 | return $this->parent; |
| 257 | } |
| 258 | |
| 259 | // verify that node has children |
| 260 | function has_child() |
| 261 | { |
| 262 | return !empty($this->children); |
| 263 | } |
| 264 | |
| 265 | // returns children of node |
| 266 | function children($idx=-1) |
| 267 | { |
| 268 | if ($idx===-1) |
| 269 | { |
| 270 | return $this->children; |
| 271 | } |
| 272 | if (isset($this->children[$idx])) |
| 273 | { |
| 274 | return $this->children[$idx]; |
| 275 | } |
| 276 | return null; |
| 277 | } |
| 278 | |
| 279 | // returns the first child of node |
| 280 | function first_child() |
| 281 | { |
| 282 | if (count($this->children)>0) |
| 283 | { |
| 284 | return $this->children[0]; |
| 285 | } |
| 286 | return null; |
| 287 | } |
| 288 | |
| 289 | // returns the last child of node |
| 290 | function last_child() |
| 291 | { |
| 292 | if (($count=count($this->children))>0) |
| 293 | { |
| 294 | return $this->children[$count-1]; |
| 295 | } |
| 296 | return null; |
| 297 | } |
| 298 | |
| 299 | // returns the next sibling of node |
| 300 | function next_sibling() |
| 301 | { |
| 302 | if ($this->parent===null) |
| 303 | { |
| 304 | return null; |
| 305 | } |
| 306 | |
| 307 | $idx = 0; |
| 308 | $count = count($this->parent->children); |
| 309 | while ($idx<$count && $this!==$this->parent->children[$idx]) |
| 310 | { |
| 311 | ++$idx; |
| 312 | } |
| 313 | if (++$idx>=$count) |
| 314 | { |
| 315 | return null; |
| 316 | } |
| 317 | return $this->parent->children[$idx]; |
| 318 | } |
| 319 | |
| 320 | // returns the previous sibling of node |
| 321 | function prev_sibling() |
| 322 | { |
| 323 | if ($this->parent===null) return null; |
| 324 | $idx = 0; |
| 325 | $count = count($this->parent->children); |
| 326 | while ($idx<$count && $this!==$this->parent->children[$idx]) |
| 327 | ++$idx; |
| 328 | if (--$idx<0) return null; |
| 329 | return $this->parent->children[$idx]; |
| 330 | } |
| 331 | |
| 332 | // function to locate a specific ancestor tag in the path to the root. |
| 333 | function find_ancestor_tag($tag) |
| 334 | { |
| 335 | global $debug_object; |
| 336 | if (is_object($debug_object)) { $debug_object->debug_log_entry(1); } |
| 337 | |
| 338 | // Start by including ourselves in the comparison. |
| 339 | $returnDom = $this; |
| 340 | |
| 341 | while (!is_null($returnDom)) |
| 342 | { |
| 343 | if (is_object($debug_object)) { $debug_object->debug_log(2, "Current tag is: " . $returnDom->tag); } |
| 344 | |
| 345 | if ($returnDom->tag == $tag) |
| 346 | { |
| 347 | break; |
| 348 | } |
| 349 | $returnDom = $returnDom->parent; |
| 350 | } |
| 351 | return $returnDom; |
| 352 | } |
| 353 | |
| 354 | // get dom node's inner html |
| 355 | function innertext() |
| 356 | { |
| 357 | if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER]; |
| 358 | if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]); |
| 359 | |
| 360 | $ret = ''; |
| 361 | foreach ($this->nodes as $n) |
| 362 | $ret .= $n->outertext(); |
| 363 | return $ret; |
| 364 | } |
| 365 | |
| 366 | // get dom node's outer text (with tag) |
| 367 | function outertext() |
| 368 | { |
| 369 | global $debug_object; |
| 370 | if (is_object($debug_object)) |
| 371 | { |
| 372 | $text = ''; |
| 373 | if ($this->tag == 'text') |
| 374 | { |
| 375 | if (!empty($this->text)) |
| 376 | { |
| 377 | $text = " with text: " . $this->text; |
| 378 | } |
| 379 | } |
| 380 | $debug_object->debug_log(1, 'Innertext of tag: ' . $this->tag . $text); |
| 381 | } |
| 382 | |
| 383 | if ($this->tag==='root') return $this->innertext(); |
| 384 | |
| 385 | // trigger callback |
| 386 | if ($this->dom && $this->dom->callback!==null) |
| 387 | { |
| 388 | call_user_func_array($this->dom->callback, array($this)); |
| 389 | } |
| 390 | |
| 391 | if (isset($this->_[HDOM_INFO_OUTER])) return $this->_[HDOM_INFO_OUTER]; |
| 392 | if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]); |
| 393 | |
| 394 | // render begin tag |
| 395 | if ($this->dom && $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]]) |
| 396 | { |
| 397 | $ret = $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]]->makeup(); |
| 398 | } else { |
| 399 | $ret = ""; |
| 400 | } |
| 401 | |
| 402 | // render inner text |
| 403 | if (isset($this->_[HDOM_INFO_INNER])) |
| 404 | { |
| 405 | // If it's a br tag... don't return the HDOM_INNER_INFO that we may or may not have added. |
| 406 | if ($this->tag != "br") |
| 407 | { |
| 408 | $ret .= $this->_[HDOM_INFO_INNER]; |
| 409 | } |
| 410 | } else { |
| 411 | if ($this->nodes) |
| 412 | { |
| 413 | foreach ($this->nodes as $n) |
| 414 | { |
| 415 | $ret .= $this->convert_text($n->outertext()); |
| 416 | } |
| 417 | } |
| 418 | } |
| 419 | |
| 420 | // render end tag |
| 421 | if (isset($this->_[HDOM_INFO_END]) && $this->_[HDOM_INFO_END]!=0) |
| 422 | $ret .= '</'.$this->tag.'>'; |
| 423 | return $ret; |
| 424 | } |
| 425 | |
| 426 | // get dom node's plain text |
| 427 | function text() |
| 428 | { |
| 429 | if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER]; |
| 430 | switch ($this->nodetype) |
| 431 | { |
| 432 | case HDOM_TYPE_TEXT: return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]); |
| 433 | case HDOM_TYPE_COMMENT: return ''; |
| 434 | case HDOM_TYPE_UNKNOWN: return ''; |
| 435 | } |
| 436 | if (strcasecmp($this->tag, 'script')===0) return ''; |
| 437 | if (strcasecmp($this->tag, 'style')===0) return ''; |
| 438 | |
| 439 | $ret = ''; |
| 440 | // In rare cases, (always node type 1 or HDOM_TYPE_ELEMENT - observed for some span tags, and some p tags) $this->nodes is set to NULL. |
| 441 | // NOTE: This indicates that there is a problem where it's set to NULL without a clear happening. |
| 442 | // WHY is this happening? |
| 443 | if (!is_null($this->nodes)) |
| 444 | { |
| 445 | foreach ($this->nodes as $n) |
| 446 | { |
| 447 | $ret .= $this->convert_text($n->text()); |
| 448 | } |
| 449 | |
| 450 | // If this node is a span... add a space at the end of it so multiple spans don't run into each other. This is plaintext after all. |
| 451 | if ($this->tag == "span") |
| 452 | { |
| 453 | $ret .= $this->dom->default_span_text; |
| 454 | } |
| 455 | |
| 456 | |
| 457 | } |
| 458 | return $ret; |
| 459 | } |
| 460 | |
| 461 | function xmltext() |
| 462 | { |
| 463 | $ret = $this->innertext(); |
| 464 | $ret = str_ireplace('<![CDATA[', '', $ret); |
| 465 | $ret = str_replace(']]>', '', $ret); |
| 466 | return $ret; |
| 467 | } |
| 468 | |
| 469 | // build node's text with tag |
| 470 | function makeup() |
| 471 | { |
| 472 | // text, comment, unknown |
| 473 | if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]); |
| 474 | |
| 475 | $ret = '<'.$this->tag; |
| 476 | $i = -1; |
| 477 | |
| 478 | foreach ($this->attr as $key=>$val) |
| 479 | { |
| 480 | ++$i; |
| 481 | |
| 482 | // skip removed attribute |
| 483 | if ($val===null || $val===false) |
| 484 | continue; |
| 485 | |
| 486 | $ret .= $this->_[HDOM_INFO_SPACE][$i][0]; |
| 487 | //no value attr: nowrap, checked selected... |
| 488 | if ($val===true) |
| 489 | $ret .= $key; |
| 490 | else { |
| 491 | switch ($this->_[HDOM_INFO_QUOTE][$i]) |
| 492 | { |
| 493 | case HDOM_QUOTE_DOUBLE: $quote = '"'; break; |
| 494 | case HDOM_QUOTE_SINGLE: $quote = '\''; break; |
| 495 | default: $quote = ''; |
| 496 | } |
| 497 | $ret .= $key.$this->_[HDOM_INFO_SPACE][$i][1].'='.$this->_[HDOM_INFO_SPACE][$i][2].$quote.$val.$quote; |
| 498 | } |
| 499 | } |
| 500 | $ret = $this->dom->restore_noise($ret); |
| 501 | return $ret . $this->_[HDOM_INFO_ENDSPACE] . '>'; |
| 502 | } |
| 503 | |
| 504 | // find elements by css selector |
| 505 | //PaperG - added ability for find to lowercase the value of the selector. |
| 506 | function find($selector, $idx=null, $lowercase=false) |
| 507 | { |
| 508 | $selectors = $this->parse_selector($selector); |
| 509 | if (($count=count($selectors))===0) return array(); |
| 510 | $found_keys = array(); |
| 511 | |
| 512 | // find each selector |
| 513 | for ($c=0; $c<$count; ++$c) |
| 514 | { |
| 515 | // The change on the below line was documented on the sourceforge code tracker id 2788009 |
| 516 | // used to be: if (($levle=count($selectors[0]))===0) return array(); |
| 517 | if (($levle=count($selectors[$c]))===0) return array(); |
| 518 | if (!isset($this->_[HDOM_INFO_BEGIN])) return array(); |
| 519 | |
| 520 | $head = array($this->_[HDOM_INFO_BEGIN]=>1); |
| 521 | |
| 522 | // handle descendant selectors, no recursive! |
| 523 | for ($l=0; $l<$levle; ++$l) |
| 524 | { |
| 525 | $ret = array(); |
| 526 | foreach ($head as $k=>$v) |
| 527 | { |
| 528 | $n = ($k===-1) ? $this->dom->root : $this->dom->nodes[$k]; |
| 529 | //PaperG - Pass this optional parameter on to the seek function. |
| 530 | $n->seek($selectors[$c][$l], $ret, $lowercase); |
| 531 | } |
| 532 | $head = $ret; |
| 533 | } |
| 534 | |
| 535 | foreach ($head as $k=>$v) |
| 536 | { |
| 537 | if (!isset($found_keys[$k])) |
| 538 | { |
| 539 | $found_keys[$k] = 1; |
| 540 | } |
| 541 | } |
| 542 | } |
| 543 | |
| 544 | // sort keys |
| 545 | ksort($found_keys); |
| 546 | |
| 547 | $found = array(); |
| 548 | foreach ($found_keys as $k=>$v) |
| 549 | $found[] = $this->dom->nodes[$k]; |
| 550 | |
| 551 | // return nth-element or array |
| 552 | if (is_null($idx)) return $found; |
| 553 | else if ($idx<0) $idx = count($found) + $idx; |
| 554 | return (isset($found[$idx])) ? $found[$idx] : null; |
| 555 | } |
| 556 | |
| 557 | // seek for given conditions |
| 558 | // PaperG - added parameter to allow for case insensitive testing of the value of a selector. |
| 559 | protected function seek($selector, &$ret, $lowercase=false) |
| 560 | { |
| 561 | global $debug_object; |
| 562 | if (is_object($debug_object)) { $debug_object->debug_log_entry(1); } |
| 563 | |
| 564 | list($tag, $key, $val, $exp, $no_key) = $selector; |
| 565 | |
| 566 | // xpath index |
| 567 | if ($tag && $key && is_numeric($key)) |
| 568 | { |
| 569 | $count = 0; |
| 570 | foreach ($this->children as $c) |
| 571 | { |
| 572 | if ($tag==='*' || $tag===$c->tag) { |
| 573 | if (++$count==$key) { |
| 574 | $ret[$c->_[HDOM_INFO_BEGIN]] = 1; |
| 575 | return; |
| 576 | } |
| 577 | } |
| 578 | } |
| 579 | return; |
| 580 | } |
| 581 | |
| 582 | $end = (!empty($this->_[HDOM_INFO_END])) ? $this->_[HDOM_INFO_END] : 0; |
| 583 | if ($end==0) { |
| 584 | $parent = $this->parent; |
| 585 | while (!isset($parent->_[HDOM_INFO_END]) && $parent!==null) { |
| 586 | $end -= 1; |
| 587 | $parent = $parent->parent; |
| 588 | } |
| 589 | $end += $parent->_[HDOM_INFO_END]; |
| 590 | } |
| 591 | |
| 592 | for ($i=$this->_[HDOM_INFO_BEGIN]+1; $i<$end; ++$i) { |
| 593 | $node = $this->dom->nodes[$i]; |
| 594 | |
| 595 | $pass = true; |
| 596 | |
| 597 | if ($tag==='*' && !$key) { |
| 598 | if (in_array($node, $this->children, true)) |
| 599 | $ret[$i] = 1; |
| 600 | continue; |
| 601 | } |
| 602 | |
| 603 | // compare tag |
| 604 | if ($tag && $tag!=$node->tag && $tag!=='*') {$pass=false;} |
| 605 | // compare key |
| 606 | if ($pass && $key) { |
| 607 | if ($no_key) { |
| 608 | if (isset($node->attr[$key])) $pass=false; |
| 609 | } else { |
| 610 | if (($key != "plaintext") && !isset($node->attr[$key])) $pass=false; |
| 611 | } |
| 612 | } |
| 613 | // compare value |
| 614 | if ($pass && $key && $val && $val!=='*') { |
| 615 | // If they have told us that this is a "plaintext" search then we want the plaintext of the node - right? |
| 616 | if ($key == "plaintext") { |
| 617 | // $node->plaintext actually returns $node->text(); |
| 618 | $nodeKeyValue = $node->text(); |
| 619 | } else { |
| 620 | // this is a normal search, we want the value of that attribute of the tag. |
| 621 | $nodeKeyValue = $node->attr[$key]; |
| 622 | } |
| 623 | if (is_object($debug_object)) {$debug_object->debug_log(2, "testing node: " . $node->tag . " for attribute: " . $key . $exp . $val . " where nodes value is: " . $nodeKeyValue);} |
| 624 | |
| 625 | //PaperG - If lowercase is set, do a case insensitive test of the value of the selector. |
| 626 | if ($lowercase) { |
| 627 | $check = $this->match($exp, strtolower($val), strtolower($nodeKeyValue)); |
| 628 | } else { |
| 629 | $check = $this->match($exp, $val, $nodeKeyValue); |
| 630 | } |
| 631 | if (is_object($debug_object)) {$debug_object->debug_log(2, "after match: " . ($check ? "true" : "false"));} |
| 632 | |
| 633 | // handle multiple class |
| 634 | if (!$check && strcasecmp($key, 'class')===0) { |
| 635 | foreach (explode(' ',$node->attr[$key]) as $k) { |
| 636 | // Without this, there were cases where leading, trailing, or double spaces lead to our comparing blanks - bad form. |
| 637 | if (!empty($k)) { |
| 638 | if ($lowercase) { |
| 639 | $check = $this->match($exp, strtolower($val), strtolower($k)); |
| 640 | } else { |
| 641 | $check = $this->match($exp, $val, $k); |
| 642 | } |
| 643 | if ($check) break; |
| 644 | } |
| 645 | } |
| 646 | } |
| 647 | if (!$check) $pass = false; |
| 648 | } |
| 649 | if ($pass) $ret[$i] = 1; |
| 650 | unset($node); |
| 651 | } |
| 652 | // It's passed by reference so this is actually what this function returns. |
| 653 | if (is_object($debug_object)) {$debug_object->debug_log(1, "EXIT - ret: ", $ret);} |
| 654 | } |
| 655 | |
| 656 | protected function match($exp, $pattern, $value) { |
| 657 | global $debug_object; |
| 658 | if (is_object($debug_object)) {$debug_object->debug_log_entry(1);} |
| 659 | |
| 660 | switch ($exp) { |
| 661 | case '=': |
| 662 | return ($value===$pattern); |
| 663 | case '!=': |
| 664 | return ($value!==$pattern); |
| 665 | case '^=': |
| 666 | return preg_match("/^".preg_quote($pattern,'/')."/", $value); |
| 667 | case '$=': |
| 668 | return preg_match("/".preg_quote($pattern,'/')."$/", $value); |
| 669 | case '*=': |
| 670 | if ($pattern[0]=='/') { |
| 671 | return preg_match($pattern, $value); |
| 672 | } |
| 673 | return preg_match("/".$pattern."/i", $value); |
| 674 | } |
| 675 | return false; |
| 676 | } |
| 677 | |
| 678 | protected function parse_selector($selector_string) { |
| 679 | global $debug_object; |
| 680 | if (is_object($debug_object)) {$debug_object->debug_log_entry(1);} |
| 681 | |
| 682 | // pattern of CSS selectors, modified from mootools |
| 683 | // Paperg: Add the colon to the attrbute, so that it properly finds <tag attr:ibute="something" > like google does. |
| 684 | // Note: if you try to look at this attribute, yo MUST use getAttribute since $dom->x:y will fail the php syntax check. |
| 685 | // Notice the \[ starting the attbute? and the @? following? This implies that an attribute can begin with an @ sign that is not captured. |
| 686 | // This implies that an html attribute specifier may start with an @ sign that is NOT captured by the expression. |
| 687 | // farther study is required to determine of this should be documented or removed. |
| 688 | // $pattern = "/([\w-:\*]*)(?:\#([\w-]+)|\.([\w-]+))?(?:\[@?(!?[\w-]+)(?:([!*^$]?=)[\"']?(.*?)[\"']?)?\])?([\/, ]+)/is"; |
| 689 | $pattern = "/([\w-:\*]*)(?:\#([\w-]+)|\.([\w-]+))?(?:\[@?(!?[\w-:]+)(?:([!*^$]?=)[\"']?(.*?)[\"']?)?\])?([\/, ]+)/is"; |
| 690 | preg_match_all($pattern, trim($selector_string).' ', $matches, PREG_SET_ORDER); |
| 691 | if (is_object($debug_object)) {$debug_object->debug_log(2, "Matches Array: ", $matches);} |
| 692 | |
| 693 | $selectors = array(); |
| 694 | $result = array(); |
| 695 | //print_r($matches); |
| 696 | |
| 697 | foreach ($matches as $m) { |
| 698 | $m[0] = trim($m[0]); |
| 699 | if ($m[0]==='' || $m[0]==='/' || $m[0]==='//') continue; |
| 700 | // for browser generated xpath |
| 701 | if ($m[1]==='tbody') continue; |
| 702 | |
| 703 | list($tag, $key, $val, $exp, $no_key) = array($m[1], null, null, '=', false); |
| 704 | if (!empty($m[2])) {$key='id'; $val=$m[2];} |
| 705 | if (!empty($m[3])) {$key='class'; $val=$m[3];} |
| 706 | if (!empty($m[4])) {$key=$m[4];} |
| 707 | if (!empty($m[5])) {$exp=$m[5];} |
| 708 | if (!empty($m[6])) {$val=$m[6];} |
| 709 | |
| 710 | // convert to lowercase |
| 711 | if ($this->dom->lowercase) {$tag=strtolower($tag); $key=strtolower($key);} |
| 712 | //elements that do NOT have the specified attribute |
| 713 | if (isset($key[0]) && $key[0]==='!') {$key=substr($key, 1); $no_key=true;} |
| 714 | |
| 715 | $result[] = array($tag, $key, $val, $exp, $no_key); |
| 716 | if (trim($m[7])===',') { |
| 717 | $selectors[] = $result; |
| 718 | $result = array(); |
| 719 | } |
| 720 | } |
| 721 | if (count($result)>0) |
| 722 | $selectors[] = $result; |
| 723 | return $selectors; |
| 724 | } |
| 725 | |
| 726 | function __get($name) |
| 727 | { |
| 728 | if (isset($this->attr[$name])) |
| 729 | { |
| 730 | return $this->convert_text($this->attr[$name]); |
| 731 | } |
| 732 | switch ($name) |
| 733 | { |
| 734 | case 'outertext': return $this->outertext(); |
| 735 | case 'innertext': return $this->innertext(); |
| 736 | case 'plaintext': return $this->text(); |
| 737 | case 'xmltext': return $this->xmltext(); |
| 738 | default: return array_key_exists($name, $this->attr); |
| 739 | } |
| 740 | } |
| 741 | |
| 742 | function __set($name, $value) |
| 743 | { |
| 744 | global $debug_object; |
| 745 | if (is_object($debug_object)) {$debug_object->debug_log_entry(1);} |
| 746 | |
| 747 | switch ($name) |
| 748 | { |
| 749 | case 'outertext': return $this->_[HDOM_INFO_OUTER] = $value; |
| 750 | case 'innertext': |
| 751 | if (isset($this->_[HDOM_INFO_TEXT])) return $this->_[HDOM_INFO_TEXT] = $value; |
| 752 | return $this->_[HDOM_INFO_INNER] = $value; |
| 753 | } |
| 754 | if (!isset($this->attr[$name])) |
| 755 | { |
| 756 | $this->_[HDOM_INFO_SPACE][] = array(' ', '', ''); |
| 757 | $this->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE; |
| 758 | } |
| 759 | $this->attr[$name] = $value; |
| 760 | } |
| 761 | |
| 762 | function __isset($name) |
| 763 | { |
| 764 | switch ($name) |
| 765 | { |
| 766 | case 'outertext': return true; |
| 767 | case 'innertext': return true; |
| 768 | case 'plaintext': return true; |
| 769 | } |
| 770 | //no value attr: nowrap, checked selected... |
| 771 | return (array_key_exists($name, $this->attr)) ? true : isset($this->attr[$name]); |
| 772 | } |
| 773 | |
| 774 | function __unset($name) { |
| 775 | if (isset($this->attr[$name])) |
| 776 | unset($this->attr[$name]); |
| 777 | } |
| 778 | |
| 779 | // PaperG - Function to convert the text from one character set to another if the two sets are not the same. |
| 780 | function convert_text($text) |
| 781 | { |
| 782 | global $debug_object; |
| 783 | if (is_object($debug_object)) {$debug_object->debug_log_entry(1);} |
| 784 | |
| 785 | $converted_text = $text; |
| 786 | |
| 787 | $sourceCharset = ""; |
| 788 | $targetCharset = ""; |
| 789 | |
| 790 | if ($this->dom) |
| 791 | { |
| 792 | $sourceCharset = strtoupper($this->dom->_charset); |
| 793 | $targetCharset = strtoupper($this->dom->_target_charset); |
| 794 | } |
| 795 | if (is_object($debug_object)) {$debug_object->debug_log(3, "source charset: " . $sourceCharset . " target charaset: " . $targetCharset);} |
| 796 | |
| 797 | if (!empty($sourceCharset) && !empty($targetCharset) && (strcasecmp($sourceCharset, $targetCharset) != 0)) |
| 798 | { |
| 799 | // Check if the reported encoding could have been incorrect and the text is actually already UTF-8 |
| 800 | if ((strcasecmp($targetCharset, 'UTF-8') == 0) && ($this->is_utf8($text))) |
| 801 | { |
| 802 | $converted_text = $text; |
| 803 | } |
| 804 | else |
| 805 | { |
| 806 | $converted_text = iconv($sourceCharset, $targetCharset, $text); |
| 807 | } |
| 808 | } |
| 809 | |
| 810 | // Lets make sure that we don't have that silly BOM issue with any of the utf-8 text we output. |
| 811 | if ($targetCharset == 'UTF-8') |
| 812 | { |
| 813 | if (substr($converted_text, 0, 3) == "\xef\xbb\xbf") |
| 814 | { |
| 815 | $converted_text = substr($converted_text, 3); |
| 816 | } |
| 817 | if (substr($converted_text, -3) == "\xef\xbb\xbf") |
| 818 | { |
| 819 | $converted_text = substr($converted_text, 0, -3); |
| 820 | } |
| 821 | } |
| 822 | |
| 823 | return $converted_text; |
| 824 | } |
| 825 | |
| 826 | /** |
| 827 | * Returns true if $string is valid UTF-8 and false otherwise. |
| 828 | * |
| 829 | * @param mixed $str String to be tested |
| 830 | * @return boolean |
| 831 | */ |
| 832 | static function is_utf8($str) |
| 833 | { |
| 834 | $c=0; $b=0; |
| 835 | $bits=0; |
| 836 | $len=strlen($str); |
| 837 | for($i=0; $i<$len; $i++) |
| 838 | { |
| 839 | $c=ord($str[$i]); |
| 840 | if($c > 128) |
| 841 | { |
| 842 | if(($c >= 254)) return false; |
| 843 | elseif($c >= 252) $bits=6; |
| 844 | elseif($c >= 248) $bits=5; |
| 845 | elseif($c >= 240) $bits=4; |
| 846 | elseif($c >= 224) $bits=3; |
| 847 | elseif($c >= 192) $bits=2; |
| 848 | else return false; |
| 849 | if(($i+$bits) > $len) return false; |
| 850 | while($bits > 1) |
| 851 | { |
| 852 | $i++; |
| 853 | $b=ord($str[$i]); |
| 854 | if($b < 128 || $b > 191) return false; |
| 855 | $bits--; |
| 856 | } |
| 857 | } |
| 858 | } |
| 859 | return true; |
| 860 | } |
| 861 | /* |
| 862 | function is_utf8($string) |
| 863 | { |
| 864 | //this is buggy |
| 865 | return (utf8_encode(utf8_decode($string)) == $string); |
| 866 | } |
| 867 | */ |
| 868 | |
| 869 | /** |
| 870 | * Function to try a few tricks to determine the displayed size of an img on the page. |
| 871 | * NOTE: This will ONLY work on an IMG tag. Returns FALSE on all other tag types. |
| 872 | * |
| 873 | * @author John Schlick |
| 874 | * @version April 19 2012 |
| 875 | * @return array an array containing the 'height' and 'width' of the image on the page or -1 if we can't figure it out. |
| 876 | */ |
| 877 | function get_display_size() |
| 878 | { |
| 879 | global $debug_object; |
| 880 | |
| 881 | $width = -1; |
| 882 | $height = -1; |
| 883 | |
| 884 | if ($this->tag !== 'img') |
| 885 | { |
| 886 | return false; |
| 887 | } |
| 888 | |
| 889 | // See if there is aheight or width attribute in the tag itself. |
| 890 | if (isset($this->attr['width'])) |
| 891 | { |
| 892 | $width = $this->attr['width']; |
| 893 | } |
| 894 | |
| 895 | if (isset($this->attr['height'])) |
| 896 | { |
| 897 | $height = $this->attr['height']; |
| 898 | } |
| 899 | |
| 900 | // Now look for an inline style. |
| 901 | if (isset($this->attr['style'])) |
| 902 | { |
| 903 | // Thanks to user gnarf from stackoverflow for this regular expression. |
| 904 | $attributes = array(); |
| 905 | preg_match_all("/([\w-]+)\s*:\s*([^;]+)\s*;?/", $this->attr['style'], $matches, PREG_SET_ORDER); |
| 906 | foreach ($matches as $match) { |
| 907 | $attributes[$match[1]] = $match[2]; |
| 908 | } |
| 909 | |
| 910 | // If there is a width in the style attributes: |
| 911 | if (isset($attributes['width']) && $width == -1) |
| 912 | { |
| 913 | // check that the last two characters are px (pixels) |
| 914 | if (strtolower(substr($attributes['width'], -2)) == 'px') |
| 915 | { |
| 916 | $proposed_width = substr($attributes['width'], 0, -2); |
| 917 | // Now make sure that it's an integer and not something stupid. |
| 918 | if (filter_var($proposed_width, FILTER_VALIDATE_INT)) |
| 919 | { |
| 920 | $width = $proposed_width; |
| 921 | } |
| 922 | } |
| 923 | } |
| 924 | |
| 925 | // If there is a width in the style attributes: |
| 926 | if (isset($attributes['height']) && $height == -1) |
| 927 | { |
| 928 | // check that the last two characters are px (pixels) |
| 929 | if (strtolower(substr($attributes['height'], -2)) == 'px') |
| 930 | { |
| 931 | $proposed_height = substr($attributes['height'], 0, -2); |
| 932 | // Now make sure that it's an integer and not something stupid. |
| 933 | if (filter_var($proposed_height, FILTER_VALIDATE_INT)) |
| 934 | { |
| 935 | $height = $proposed_height; |
| 936 | } |
| 937 | } |
| 938 | } |
| 939 | |
| 940 | } |
| 941 | |
| 942 | // Future enhancement: |
| 943 | // Look in the tag to see if there is a class or id specified that has a height or width attribute to it. |
| 944 | |
| 945 | // Far future enhancement |
| 946 | // Look at all the parent tags of this image to see if they specify a class or id that has an img selector that specifies a height or width |
| 947 | // Note that in this case, the class or id will have the img subselector for it to apply to the image. |
| 948 | |
| 949 | // ridiculously far future development |
| 950 | // If the class or id is specified in a SEPARATE css file thats not on the page, go get it and do what we were just doing for the ones on the page. |
| 951 | |
| 952 | $result = array('height' => $height, |
| 953 | 'width' => $width); |
| 954 | return $result; |
| 955 | } |
| 956 | |
| 957 | // camel naming conventions |
| 958 | function getAllAttributes() {return $this->attr;} |
| 959 | function getAttribute($name) {return $this->__get($name);} |
| 960 | function setAttribute($name, $value) {$this->__set($name, $value);} |
| 961 | function hasAttribute($name) {return $this->__isset($name);} |
| 962 | function removeAttribute($name) {$this->__set($name, null);} |
| 963 | function getElementById($id) {return $this->find("#$id", 0);} |
| 964 | function getElementsById($id, $idx=null) {return $this->find("#$id", $idx);} |
| 965 | function getElementByTagName($name) {return $this->find($name, 0);} |
| 966 | function getElementsByTagName($name, $idx=null) {return $this->find($name, $idx);} |
| 967 | function parentNode() {return $this->parent();} |
| 968 | function childNodes($idx=-1) {return $this->children($idx);} |
| 969 | function firstChild() {return $this->first_child();} |
| 970 | function lastChild() {return $this->last_child();} |
| 971 | function nextSibling() {return $this->next_sibling();} |
| 972 | function previousSibling() {return $this->prev_sibling();} |
| 973 | function hasChildNodes() {return $this->has_child();} |
| 974 | function nodeName() {return $this->tag;} |
| 975 | function appendChild($node) {$node->parent($this); return $node;} |
| 976 | |
| 977 | } |
| 978 | |
| 979 | /** |
| 980 | * simple html dom parser |
| 981 | * Paperg - in the find routine: allow us to specify that we want case insensitive testing of the value of the selector. |
| 982 | * Paperg - change $size from protected to public so we can easily access it |
| 983 | * Paperg - added ForceTagsClosed in the constructor which tells us whether we trust the html or not. Default is to NOT trust it. |
| 984 | * |
| 985 | * @package PlaceLocalInclude |
| 986 | */ |
| 987 | class simple_html_dom |
| 988 | { |
| 989 | public $root = null; |
| 990 | public $nodes = array(); |
| 991 | public $callback = null; |
| 992 | public $lowercase = false; |
| 993 | // Used to keep track of how large the text was when we started. |
| 994 | public $original_size; |
| 995 | public $size; |
| 996 | protected $pos; |
| 997 | protected $doc; |
| 998 | protected $char; |
| 999 | protected $cursor; |
| 1000 | protected $parent; |
| 1001 | protected $noise = array(); |
| 1002 | protected $token_blank = " \t\r\n"; |
| 1003 | protected $token_equal = ' =/>'; |
| 1004 | protected $token_slash = " />\r\n\t"; |
| 1005 | protected $token_attr = ' >'; |
| 1006 | // Note that this is referenced by a child node, and so it needs to be public for that node to see this information. |
| 1007 | public $_charset = ''; |
| 1008 | public $_target_charset = ''; |
| 1009 | protected $default_br_text = ""; |
| 1010 | public $default_span_text = ""; |
| 1011 | |
| 1012 | // use isset instead of in_array, performance boost about 30%... |
| 1013 | protected $self_closing_tags = array('img'=>1, 'br'=>1, 'input'=>1, 'meta'=>1, 'link'=>1, 'hr'=>1, 'base'=>1, 'embed'=>1, 'spacer'=>1); |
| 1014 | protected $block_tags = array('root'=>1, 'body'=>1, 'form'=>1, 'div'=>1, 'span'=>1, 'table'=>1); |
| 1015 | // Known sourceforge issue #2977341 |
| 1016 | // B tags that are not closed cause us to return everything to the end of the document. |
| 1017 | protected $optional_closing_tags = array( |
| 1018 | 'tr'=>array('tr'=>1, 'td'=>1, 'th'=>1), |
| 1019 | 'th'=>array('th'=>1), |
| 1020 | 'td'=>array('td'=>1), |
| 1021 | 'li'=>array('li'=>1), |
| 1022 | 'dt'=>array('dt'=>1, 'dd'=>1), |
| 1023 | 'dd'=>array('dd'=>1, 'dt'=>1), |
| 1024 | 'dl'=>array('dd'=>1, 'dt'=>1), |
| 1025 | 'p'=>array('p'=>1), |
| 1026 | 'nobr'=>array('nobr'=>1), |
| 1027 | 'b'=>array('b'=>1), |
| 1028 | 'option'=>array('option'=>1), |
| 1029 | ); |
| 1030 | |
| 1031 | function __construct($str=null, $lowercase=true, $forceTagsClosed=true, $target_charset=DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT) |
| 1032 | { |
| 1033 | if ($str) |
| 1034 | { |
| 1035 | if (preg_match("/^http:\/\//i",$str) || is_file($str)) |
| 1036 | { |
| 1037 | $this->load_file($str); |
| 1038 | } |
| 1039 | else |
| 1040 | { |
| 1041 | $this->load($str, $lowercase, $stripRN, $defaultBRText, $defaultSpanText); |
| 1042 | } |
| 1043 | } |
| 1044 | // Forcing tags to be closed implies that we don't trust the html, but it can lead to parsing errors if we SHOULD trust the html. |
| 1045 | if (!$forceTagsClosed) { |
| 1046 | $this->optional_closing_array=array(); |
| 1047 | } |
| 1048 | $this->_target_charset = $target_charset; |
| 1049 | } |
| 1050 | |
| 1051 | function __destruct() |
| 1052 | { |
| 1053 | $this->clear(); |
| 1054 | } |
| 1055 | |
| 1056 | // load html from string |
| 1057 | function load($str, $lowercase=true, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT) |
| 1058 | { |
| 1059 | global $debug_object; |
| 1060 | |
| 1061 | // prepare |
| 1062 | $this->prepare($str, $lowercase, $stripRN, $defaultBRText, $defaultSpanText); |
| 1063 | // strip out cdata |
| 1064 | $this->remove_noise("'<!\[CDATA\[(.*?)\]\]>'is", true); |
| 1065 | // strip out comments |
| 1066 | $this->remove_noise("'<!--(.*?)-->'is"); |
| 1067 | // Per sourceforge http://sourceforge.net/tracker/?func=detail&aid=2949097&group_id=218559&atid=1044037 |
| 1068 | // Script tags removal now preceeds style tag removal. |
| 1069 | // strip out <script> tags |
| 1070 | $this->remove_noise("'<\s*script[^>]*[^/]>(.*?)<\s*/\s*script\s*>'is"); |
| 1071 | $this->remove_noise("'<\s*script\s*>(.*?)<\s*/\s*script\s*>'is"); |
| 1072 | // strip out <style> tags |
| 1073 | $this->remove_noise("'<\s*style[^>]*[^/]>(.*?)<\s*/\s*style\s*>'is"); |
| 1074 | $this->remove_noise("'<\s*style\s*>(.*?)<\s*/\s*style\s*>'is"); |
| 1075 | // strip out preformatted tags |
| 1076 | $this->remove_noise("'<\s*(?:code)[^>]*>(.*?)<\s*/\s*(?:code)\s*>'is"); |
| 1077 | // strip out server side scripts |
| 1078 | $this->remove_noise("'(<\?)(.*?)(\?>)'s", true); |
| 1079 | // strip smarty scripts |
| 1080 | $this->remove_noise("'(\{\w)(.*?)(\})'s", true); |
| 1081 | |
| 1082 | // parsing |
| 1083 | while ($this->parse()); |
| 1084 | // end |
| 1085 | $this->root->_[HDOM_INFO_END] = $this->cursor; |
| 1086 | $this->parse_charset(); |
| 1087 | |
| 1088 | // make load function chainable |
| 1089 | return $this; |
| 1090 | |
| 1091 | } |
| 1092 | |
| 1093 | // load html from file |
| 1094 | function load_file() |
| 1095 | { |
| 1096 | $args = func_get_args(); |
| 1097 | $this->load(call_user_func_array('file_get_contents', $args), true); |
| 1098 | // Throw an error if we can't properly load the dom. |
| 1099 | if (($error=error_get_last())!==null) { |
| 1100 | $this->clear(); |
| 1101 | return false; |
| 1102 | } |
| 1103 | } |
| 1104 | |
| 1105 | // set callback function |
| 1106 | function set_callback($function_name) |
| 1107 | { |
| 1108 | $this->callback = $function_name; |
| 1109 | } |
| 1110 | |
| 1111 | // remove callback function |
| 1112 | function remove_callback() |
| 1113 | { |
| 1114 | $this->callback = null; |
| 1115 | } |
| 1116 | |
| 1117 | // save dom as string |
| 1118 | function save($filepath='') |
| 1119 | { |
| 1120 | $ret = $this->root->innertext(); |
| 1121 | if ($filepath!=='') file_put_contents($filepath, $ret, LOCK_EX); |
| 1122 | return $ret; |
| 1123 | } |
| 1124 | |
| 1125 | // find dom node by css selector |
| 1126 | // Paperg - allow us to specify that we want case insensitive testing of the value of the selector. |
| 1127 | function find($selector, $idx=null, $lowercase=false) |
| 1128 | { |
| 1129 | return $this->root->find($selector, $idx, $lowercase); |
| 1130 | } |
| 1131 | |
| 1132 | // clean up memory due to php5 circular references memory leak... |
| 1133 | function clear() |
| 1134 | { |
| 1135 | foreach ($this->nodes as $n) {$n->clear(); $n = null;} |
| 1136 | // This add next line is documented in the sourceforge repository. 2977248 as a fix for ongoing memory leaks that occur even with the use of clear. |
| 1137 | if (isset($this->children)) foreach ($this->children as $n) {$n->clear(); $n = null;} |
| 1138 | if (isset($this->parent)) {$this->parent->clear(); unset($this->parent);} |
| 1139 | if (isset($this->root)) {$this->root->clear(); unset($this->root);} |
| 1140 | unset($this->doc); |
| 1141 | unset($this->noise); |
| 1142 | } |
| 1143 | |
| 1144 | function dump($show_attr=true) |
| 1145 | { |
| 1146 | $this->root->dump($show_attr); |
| 1147 | } |
| 1148 | |
| 1149 | // prepare HTML data and init everything |
| 1150 | protected function prepare($str, $lowercase=true, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT) |
| 1151 | { |
| 1152 | $this->clear(); |
| 1153 | |
| 1154 | // set the length of content before we do anything to it. |
| 1155 | $this->size = strlen($str); |
| 1156 | // Save the original size of the html that we got in. It might be useful to someone. |
| 1157 | $this->original_size = $this->size; |
| 1158 | |
| 1159 | //before we save the string as the doc... strip out the \r \n's if we are told to. |
| 1160 | if ($stripRN) { |
| 1161 | $str = str_replace("\r", " ", $str); |
| 1162 | $str = str_replace("\n", " ", $str); |
| 1163 | |
| 1164 | // set the length of content since we have changed it. |
| 1165 | $this->size = strlen($str); |
| 1166 | } |
| 1167 | |
| 1168 | $this->doc = $str; |
| 1169 | $this->pos = 0; |
| 1170 | $this->cursor = 1; |
| 1171 | $this->noise = array(); |
| 1172 | $this->nodes = array(); |
| 1173 | $this->lowercase = $lowercase; |
| 1174 | $this->default_br_text = $defaultBRText; |
| 1175 | $this->default_span_text = $defaultSpanText; |
| 1176 | $this->root = new simple_html_dom_node($this); |
| 1177 | $this->root->tag = 'root'; |
| 1178 | $this->root->_[HDOM_INFO_BEGIN] = -1; |
| 1179 | $this->root->nodetype = HDOM_TYPE_ROOT; |
| 1180 | $this->parent = $this->root; |
| 1181 | if ($this->size>0) $this->char = $this->doc[0]; |
| 1182 | } |
| 1183 | |
| 1184 | // parse html content |
| 1185 | protected function parse() |
| 1186 | { |
| 1187 | if (($s = $this->copy_until_char('<'))==='') |
| 1188 | { |
| 1189 | return $this->read_tag(); |
| 1190 | } |
| 1191 | |
| 1192 | // text |
| 1193 | $node = new simple_html_dom_node($this); |
| 1194 | ++$this->cursor; |
| 1195 | $node->_[HDOM_INFO_TEXT] = $s; |
| 1196 | $this->link_nodes($node, false); |
| 1197 | return true; |
| 1198 | } |
| 1199 | |
| 1200 | // PAPERG - dkchou - added this to try to identify the character set of the page we have just parsed so we know better how to spit it out later. |
| 1201 | // NOTE: IF you provide a routine called get_last_retrieve_url_contents_content_type which returns the CURLINFO_CONTENT_TYPE from the last curl_exec |
| 1202 | // (or the content_type header from the last transfer), we will parse THAT, and if a charset is specified, we will use it over any other mechanism. |
| 1203 | protected function parse_charset() |
| 1204 | { |
| 1205 | global $debug_object; |
| 1206 | |
| 1207 | $charset = null; |
| 1208 | |
| 1209 | if (function_exists('get_last_retrieve_url_contents_content_type')) |
| 1210 | { |
| 1211 | $contentTypeHeader = get_last_retrieve_url_contents_content_type(); |
| 1212 | $success = preg_match('/charset=(.+)/', $contentTypeHeader, $matches); |
| 1213 | if ($success) |
| 1214 | { |
| 1215 | $charset = $matches[1]; |
| 1216 | if (is_object($debug_object)) {$debug_object->debug_log(2, 'header content-type found charset of: ' . $charset);} |
| 1217 | } |
| 1218 | |
| 1219 | } |
| 1220 | |
| 1221 | if (empty($charset)) |
| 1222 | { |
| 1223 | $el = $this->root->find('meta[http-equiv=Content-Type]',0, true); |
| 1224 | if (!empty($el)) |
| 1225 | { |
| 1226 | $fullvalue = $el->content; |
| 1227 | if (is_object($debug_object)) {$debug_object->debug_log(2, 'meta content-type tag found' . $fullvalue);} |
| 1228 | |
| 1229 | if (!empty($fullvalue)) |
| 1230 | { |
| 1231 | $success = preg_match('/charset=(.+)/i', $fullvalue, $matches); |
| 1232 | if ($success) |
| 1233 | { |
| 1234 | $charset = $matches[1]; |
| 1235 | } |
| 1236 | else |
| 1237 | { |
| 1238 | // If there is a meta tag, and they don't specify the character set, research says that it's typically ISO-8859-1 |
| 1239 | if (is_object($debug_object)) {$debug_object->debug_log(2, 'meta content-type tag couldn\'t be parsed. using iso-8859 default.');} |
| 1240 | $charset = 'ISO-8859-1'; |
| 1241 | } |
| 1242 | } |
| 1243 | } |
| 1244 | } |
| 1245 | |
| 1246 | // If we couldn't find a charset above, then lets try to detect one based on the text we got... |
| 1247 | if (empty($charset)) |
| 1248 | { |
| 1249 | // Use this in case mb_detect_charset isn't installed/loaded on this machine. |
| 1250 | $charset = false; |
| 1251 | if (function_exists('mb_detect_encoding')) |
| 1252 | { |
| 1253 | // Have php try to detect the encoding from the text given to us. |
| 1254 | $charset = mb_detect_encoding($this->root->plaintext . "ascii", $encoding_list = array( "UTF-8", "CP1252" ) ); |
| 1255 | if (is_object($debug_object)) {$debug_object->debug_log(2, 'mb_detect found: ' . $charset);} |
| 1256 | } |
| 1257 | |
| 1258 | // and if this doesn't work... then we need to just wrongheadedly assume it's UTF-8 so that we can move on - cause this will usually give us most of what we need... |
| 1259 | if ($charset === false) |
| 1260 | { |
| 1261 | if (is_object($debug_object)) {$debug_object->debug_log(2, 'since mb_detect failed - using default of utf-8');} |
| 1262 | $charset = 'UTF-8'; |
| 1263 | } |
| 1264 | } |
| 1265 | |
| 1266 | // Since CP1252 is a superset, if we get one of it's subsets, we want it instead. |
| 1267 | if ((strtolower($charset) == strtolower('ISO-8859-1')) || (strtolower($charset) == strtolower('Latin1')) || (strtolower($charset) == strtolower('Latin-1'))) |
| 1268 | { |
| 1269 | if (is_object($debug_object)) {$debug_object->debug_log(2, 'replacing ' . $charset . ' with CP1252 as its a superset');} |
| 1270 | $charset = 'CP1252'; |
| 1271 | } |
| 1272 | |
| 1273 | if (is_object($debug_object)) {$debug_object->debug_log(1, 'EXIT - ' . $charset);} |
| 1274 | |
| 1275 | return $this->_charset = $charset; |
| 1276 | } |
| 1277 | |
| 1278 | // read tag info |
| 1279 | protected function read_tag() |
| 1280 | { |
| 1281 | if ($this->char!=='<') |
| 1282 | { |
| 1283 | $this->root->_[HDOM_INFO_END] = $this->cursor; |
| 1284 | return false; |
| 1285 | } |
| 1286 | $begin_tag_pos = $this->pos; |
| 1287 | $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1288 | |
| 1289 | // end tag |
| 1290 | if ($this->char==='/') |
| 1291 | { |
| 1292 | $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1293 | // This represents the change in the simple_html_dom trunk from revision 180 to 181. |
| 1294 | // $this->skip($this->token_blank_t); |
| 1295 | $this->skip($this->token_blank); |
| 1296 | $tag = $this->copy_until_char('>'); |
| 1297 | |
| 1298 | // skip attributes in end tag |
| 1299 | if (($pos = strpos($tag, ' '))!==false) |
| 1300 | $tag = substr($tag, 0, $pos); |
| 1301 | |
| 1302 | $parent_lower = strtolower($this->parent->tag); |
| 1303 | $tag_lower = strtolower($tag); |
| 1304 | |
| 1305 | if ($parent_lower!==$tag_lower) |
| 1306 | { |
| 1307 | if (isset($this->optional_closing_tags[$parent_lower]) && isset($this->block_tags[$tag_lower])) |
| 1308 | { |
| 1309 | $this->parent->_[HDOM_INFO_END] = 0; |
| 1310 | $org_parent = $this->parent; |
| 1311 | |
| 1312 | while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower) |
| 1313 | $this->parent = $this->parent->parent; |
| 1314 | |
| 1315 | if (strtolower($this->parent->tag)!==$tag_lower) { |
| 1316 | $this->parent = $org_parent; // restore origonal parent |
| 1317 | if ($this->parent->parent) $this->parent = $this->parent->parent; |
| 1318 | $this->parent->_[HDOM_INFO_END] = $this->cursor; |
| 1319 | return $this->as_text_node($tag); |
| 1320 | } |
| 1321 | } |
| 1322 | else if (($this->parent->parent) && isset($this->block_tags[$tag_lower])) |
| 1323 | { |
| 1324 | $this->parent->_[HDOM_INFO_END] = 0; |
| 1325 | $org_parent = $this->parent; |
| 1326 | |
| 1327 | while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower) |
| 1328 | $this->parent = $this->parent->parent; |
| 1329 | |
| 1330 | if (strtolower($this->parent->tag)!==$tag_lower) |
| 1331 | { |
| 1332 | $this->parent = $org_parent; // restore origonal parent |
| 1333 | $this->parent->_[HDOM_INFO_END] = $this->cursor; |
| 1334 | return $this->as_text_node($tag); |
| 1335 | } |
| 1336 | } |
| 1337 | else if (($this->parent->parent) && strtolower($this->parent->parent->tag)===$tag_lower) |
| 1338 | { |
| 1339 | $this->parent->_[HDOM_INFO_END] = 0; |
| 1340 | $this->parent = $this->parent->parent; |
| 1341 | } |
| 1342 | else |
| 1343 | return $this->as_text_node($tag); |
| 1344 | } |
| 1345 | |
| 1346 | $this->parent->_[HDOM_INFO_END] = $this->cursor; |
| 1347 | if ($this->parent->parent) $this->parent = $this->parent->parent; |
| 1348 | |
| 1349 | $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1350 | return true; |
| 1351 | } |
| 1352 | |
| 1353 | $node = new simple_html_dom_node($this); |
| 1354 | $node->_[HDOM_INFO_BEGIN] = $this->cursor; |
| 1355 | ++$this->cursor; |
| 1356 | $tag = $this->copy_until($this->token_slash); |
| 1357 | $node->tag_start = $begin_tag_pos; |
| 1358 | |
| 1359 | // doctype, cdata & comments... |
| 1360 | if (isset($tag[0]) && $tag[0]==='!') { |
| 1361 | $node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until_char('>'); |
| 1362 | |
| 1363 | if (isset($tag[2]) && $tag[1]==='-' && $tag[2]==='-') { |
| 1364 | $node->nodetype = HDOM_TYPE_COMMENT; |
| 1365 | $node->tag = 'comment'; |
| 1366 | } else { |
| 1367 | $node->nodetype = HDOM_TYPE_UNKNOWN; |
| 1368 | $node->tag = 'unknown'; |
| 1369 | } |
| 1370 | if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>'; |
| 1371 | $this->link_nodes($node, true); |
| 1372 | $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1373 | return true; |
| 1374 | } |
| 1375 | |
| 1376 | // text |
| 1377 | if ($pos=strpos($tag, '<')!==false) { |
| 1378 | $tag = '<' . substr($tag, 0, -1); |
| 1379 | $node->_[HDOM_INFO_TEXT] = $tag; |
| 1380 | $this->link_nodes($node, false); |
| 1381 | $this->char = $this->doc[--$this->pos]; // prev |
| 1382 | return true; |
| 1383 | } |
| 1384 | |
| 1385 | if (!preg_match("/^[\w-:]+$/", $tag)) { |
| 1386 | $node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until('<>'); |
| 1387 | if ($this->char==='<') { |
| 1388 | $this->link_nodes($node, false); |
| 1389 | return true; |
| 1390 | } |
| 1391 | |
| 1392 | if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>'; |
| 1393 | $this->link_nodes($node, false); |
| 1394 | $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1395 | return true; |
| 1396 | } |
| 1397 | |
| 1398 | // begin tag |
| 1399 | $node->nodetype = HDOM_TYPE_ELEMENT; |
| 1400 | $tag_lower = strtolower($tag); |
| 1401 | $node->tag = ($this->lowercase) ? $tag_lower : $tag; |
| 1402 | |
| 1403 | // handle optional closing tags |
| 1404 | if (isset($this->optional_closing_tags[$tag_lower]) ) |
| 1405 | { |
| 1406 | while (isset($this->optional_closing_tags[$tag_lower][strtolower($this->parent->tag)])) |
| 1407 | { |
| 1408 | $this->parent->_[HDOM_INFO_END] = 0; |
| 1409 | $this->parent = $this->parent->parent; |
| 1410 | } |
| 1411 | $node->parent = $this->parent; |
| 1412 | } |
| 1413 | |
| 1414 | $guard = 0; // prevent infinity loop |
| 1415 | $space = array($this->copy_skip($this->token_blank), '', ''); |
| 1416 | |
| 1417 | // attributes |
| 1418 | do |
| 1419 | { |
| 1420 | if ($this->char!==null && $space[0]==='') |
| 1421 | { |
| 1422 | break; |
| 1423 | } |
| 1424 | $name = $this->copy_until($this->token_equal); |
| 1425 | if ($guard===$this->pos) |
| 1426 | { |
| 1427 | $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1428 | continue; |
| 1429 | } |
| 1430 | $guard = $this->pos; |
| 1431 | |
| 1432 | // handle endless '<' |
| 1433 | if ($this->pos>=$this->size-1 && $this->char!=='>') { |
| 1434 | $node->nodetype = HDOM_TYPE_TEXT; |
| 1435 | $node->_[HDOM_INFO_END] = 0; |
| 1436 | $node->_[HDOM_INFO_TEXT] = '<'.$tag . $space[0] . $name; |
| 1437 | $node->tag = 'text'; |
| 1438 | $this->link_nodes($node, false); |
| 1439 | return true; |
| 1440 | } |
| 1441 | |
| 1442 | // handle mismatch '<' |
| 1443 | if ($this->doc[$this->pos-1]=='<') { |
| 1444 | $node->nodetype = HDOM_TYPE_TEXT; |
| 1445 | $node->tag = 'text'; |
| 1446 | $node->attr = array(); |
| 1447 | $node->_[HDOM_INFO_END] = 0; |
| 1448 | $node->_[HDOM_INFO_TEXT] = substr($this->doc, $begin_tag_pos, $this->pos-$begin_tag_pos-1); |
| 1449 | $this->pos -= 2; |
| 1450 | $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1451 | $this->link_nodes($node, false); |
| 1452 | return true; |
| 1453 | } |
| 1454 | |
| 1455 | if ($name!=='/' && $name!=='') { |
| 1456 | $space[1] = $this->copy_skip($this->token_blank); |
| 1457 | $name = $this->restore_noise($name); |
| 1458 | if ($this->lowercase) $name = strtolower($name); |
| 1459 | if ($this->char==='=') { |
| 1460 | $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1461 | $this->parse_attr($node, $name, $space); |
| 1462 | } |
| 1463 | else { |
| 1464 | //no value attr: nowrap, checked selected... |
| 1465 | $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO; |
| 1466 | $node->attr[$name] = true; |
| 1467 | if ($this->char!='>') $this->char = $this->doc[--$this->pos]; // prev |
| 1468 | } |
| 1469 | $node->_[HDOM_INFO_SPACE][] = $space; |
| 1470 | $space = array($this->copy_skip($this->token_blank), '', ''); |
| 1471 | } |
| 1472 | else |
| 1473 | break; |
| 1474 | } while ($this->char!=='>' && $this->char!=='/'); |
| 1475 | |
| 1476 | $this->link_nodes($node, true); |
| 1477 | $node->_[HDOM_INFO_ENDSPACE] = $space[0]; |
| 1478 | |
| 1479 | // check self closing |
| 1480 | if ($this->copy_until_char_escape('>')==='/') |
| 1481 | { |
| 1482 | $node->_[HDOM_INFO_ENDSPACE] .= '/'; |
| 1483 | $node->_[HDOM_INFO_END] = 0; |
| 1484 | } |
| 1485 | else |
| 1486 | { |
| 1487 | // reset parent |
| 1488 | if (!isset($this->self_closing_tags[strtolower($node->tag)])) $this->parent = $node; |
| 1489 | } |
| 1490 | $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1491 | |
| 1492 | // If it's a BR tag, we need to set it's text to the default text. |
| 1493 | // This way when we see it in plaintext, we can generate formatting that the user wants. |
| 1494 | // since a br tag never has sub nodes, this works well. |
| 1495 | if ($node->tag == "br") |
| 1496 | { |
| 1497 | $node->_[HDOM_INFO_INNER] = $this->default_br_text; |
| 1498 | } |
| 1499 | |
| 1500 | return true; |
| 1501 | } |
| 1502 | |
| 1503 | // parse attributes |
| 1504 | protected function parse_attr($node, $name, &$space) |
| 1505 | { |
| 1506 | // Per sourceforge: http://sourceforge.net/tracker/?func=detail&aid=3061408&group_id=218559&atid=1044037 |
| 1507 | // If the attribute is already defined inside a tag, only pay atetntion to the first one as opposed to the last one. |
| 1508 | if (isset($node->attr[$name])) |
| 1509 | { |
| 1510 | return; |
| 1511 | } |
| 1512 | |
| 1513 | $space[2] = $this->copy_skip($this->token_blank); |
| 1514 | switch ($this->char) { |
| 1515 | case '"': |
| 1516 | $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE; |
| 1517 | $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1518 | $node->attr[$name] = $this->restore_noise($this->copy_until_char_escape('"')); |
| 1519 | $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1520 | break; |
| 1521 | case '\'': |
| 1522 | $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_SINGLE; |
| 1523 | $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1524 | $node->attr[$name] = $this->restore_noise($this->copy_until_char_escape('\'')); |
| 1525 | $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1526 | break; |
| 1527 | default: |
| 1528 | $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO; |
| 1529 | $node->attr[$name] = $this->restore_noise($this->copy_until($this->token_attr)); |
| 1530 | } |
| 1531 | // PaperG: Attributes should not have \r or \n in them, that counts as html whitespace. |
| 1532 | $node->attr[$name] = str_replace("\r", "", $node->attr[$name]); |
| 1533 | $node->attr[$name] = str_replace("\n", "", $node->attr[$name]); |
| 1534 | // PaperG: If this is a "class" selector, lets get rid of the preceeding and trailing space since some people leave it in the multi class case. |
| 1535 | if ($name == "class") { |
| 1536 | $node->attr[$name] = trim($node->attr[$name]); |
| 1537 | } |
| 1538 | } |
| 1539 | |
| 1540 | // link node's parent |
| 1541 | protected function link_nodes(&$node, $is_child) |
| 1542 | { |
| 1543 | $node->parent = $this->parent; |
| 1544 | $this->parent->nodes[] = $node; |
| 1545 | if ($is_child) |
| 1546 | { |
| 1547 | $this->parent->children[] = $node; |
| 1548 | } |
| 1549 | } |
| 1550 | |
| 1551 | // as a text node |
| 1552 | protected function as_text_node($tag) |
| 1553 | { |
| 1554 | $node = new simple_html_dom_node($this); |
| 1555 | ++$this->cursor; |
| 1556 | $node->_[HDOM_INFO_TEXT] = '</' . $tag . '>'; |
| 1557 | $this->link_nodes($node, false); |
| 1558 | $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1559 | return true; |
| 1560 | } |
| 1561 | |
| 1562 | protected function skip($chars) |
| 1563 | { |
| 1564 | $this->pos += strspn($this->doc, $chars, $this->pos); |
| 1565 | $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1566 | } |
| 1567 | |
| 1568 | protected function copy_skip($chars) |
| 1569 | { |
| 1570 | $pos = $this->pos; |
| 1571 | $len = strspn($this->doc, $chars, $pos); |
| 1572 | $this->pos += $len; |
| 1573 | $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1574 | if ($len===0) return ''; |
| 1575 | return substr($this->doc, $pos, $len); |
| 1576 | } |
| 1577 | |
| 1578 | protected function copy_until($chars) |
| 1579 | { |
| 1580 | $pos = $this->pos; |
| 1581 | $len = strcspn($this->doc, $chars, $pos); |
| 1582 | $this->pos += $len; |
| 1583 | $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next |
| 1584 | return substr($this->doc, $pos, $len); |
| 1585 | } |
| 1586 | |
| 1587 | protected function copy_until_char($char) |
| 1588 | { |
| 1589 | if ($this->char===null) return ''; |
| 1590 | |
| 1591 | if (($pos = strpos($this->doc, $char, $this->pos))===false) { |
| 1592 | $ret = substr($this->doc, $this->pos, $this->size-$this->pos); |
| 1593 | $this->char = null; |
| 1594 | $this->pos = $this->size; |
| 1595 | return $ret; |
| 1596 | } |
| 1597 | |
| 1598 | if ($pos===$this->pos) return ''; |
| 1599 | $pos_old = $this->pos; |
| 1600 | $this->char = $this->doc[$pos]; |
| 1601 | $this->pos = $pos; |
| 1602 | return substr($this->doc, $pos_old, $pos-$pos_old); |
| 1603 | } |
| 1604 | |
| 1605 | protected function copy_until_char_escape($char) |
| 1606 | { |
| 1607 | if ($this->char===null) return ''; |
| 1608 | |
| 1609 | $start = $this->pos; |
| 1610 | while (1) |
| 1611 | { |
| 1612 | if (($pos = strpos($this->doc, $char, $start))===false) |
| 1613 | { |
| 1614 | $ret = substr($this->doc, $this->pos, $this->size-$this->pos); |
| 1615 | $this->char = null; |
| 1616 | $this->pos = $this->size; |
| 1617 | return $ret; |
| 1618 | } |
| 1619 | |
| 1620 | if ($pos===$this->pos) return ''; |
| 1621 | |
| 1622 | if ($this->doc[$pos-1]==='\\') { |
| 1623 | $start = $pos+1; |
| 1624 | continue; |
| 1625 | } |
| 1626 | |
| 1627 | $pos_old = $this->pos; |
| 1628 | $this->char = $this->doc[$pos]; |
| 1629 | $this->pos = $pos; |
| 1630 | return substr($this->doc, $pos_old, $pos-$pos_old); |
| 1631 | } |
| 1632 | } |
| 1633 | |
| 1634 | // remove noise from html content |
| 1635 | // save the noise in the $this->noise array. |
| 1636 | protected function remove_noise($pattern, $remove_tag=false) |
| 1637 | { |
| 1638 | global $debug_object; |
| 1639 | if (is_object($debug_object)) { $debug_object->debug_log_entry(1); } |
| 1640 | |
| 1641 | $count = preg_match_all($pattern, $this->doc, $matches, PREG_SET_ORDER|PREG_OFFSET_CAPTURE); |
| 1642 | |
| 1643 | for ($i=$count-1; $i>-1; --$i) |
| 1644 | { |
| 1645 | $key = '___noise___'.sprintf('% 5d', count($this->noise)+1000); |
| 1646 | if (is_object($debug_object)) { $debug_object->debug_log(2, 'key is: ' . $key); } |
| 1647 | $idx = ($remove_tag) ? 0 : 1; |
| 1648 | $this->noise[$key] = $matches[$i][$idx][0]; |
| 1649 | $this->doc = substr_replace($this->doc, $key, $matches[$i][$idx][1], strlen($matches[$i][$idx][0])); |
| 1650 | } |
| 1651 | |
| 1652 | // reset the length of content |
| 1653 | $this->size = strlen($this->doc); |
| 1654 | if ($this->size>0) |
| 1655 | { |
| 1656 | $this->char = $this->doc[0]; |
| 1657 | } |
| 1658 | } |
| 1659 | |
| 1660 | // restore noise to html content |
| 1661 | function restore_noise($text) |
| 1662 | { |
| 1663 | global $debug_object; |
| 1664 | if (is_object($debug_object)) { $debug_object->debug_log_entry(1); } |
| 1665 | |
| 1666 | while (($pos=strpos($text, '___noise___'))!==false) |
| 1667 | { |
| 1668 | // Sometimes there is a broken piece of markup, and we don't GET the pos+11 etc... token which indicates a problem outside of us... |
| 1669 | if (strlen($text) > $pos+15) |
| 1670 | { |
| 1671 | $key = '___noise___'.$text[$pos+11].$text[$pos+12].$text[$pos+13].$text[$pos+14].$text[$pos+15]; |
| 1672 | if (is_object($debug_object)) { $debug_object->debug_log(2, 'located key of: ' . $key); } |
| 1673 | |
| 1674 | if (isset($this->noise[$key])) |
| 1675 | { |
| 1676 | $text = substr($text, 0, $pos).$this->noise[$key].substr($text, $pos+16); |
| 1677 | } |
| 1678 | else |
| 1679 | { |
| 1680 | // do this to prevent an infinite loop. |
| 1681 | $text = substr($text, 0, $pos).'UNDEFINED NOISE FOR KEY: '.$key . substr($text, $pos+16); |
| 1682 | } |
| 1683 | } |
| 1684 | else |
| 1685 | { |
| 1686 | // There is no valid key being given back to us... We must get rid of the ___noise___ or we will have a problem. |
| 1687 | $text = substr($text, 0, $pos).'NO NUMERIC NOISE KEY' . substr($text, $pos+11); |
| 1688 | } |
| 1689 | } |
| 1690 | return $text; |
| 1691 | } |
| 1692 | |
| 1693 | // Sometimes we NEED one of the noise elements. |
| 1694 | function search_noise($text) |
| 1695 | { |
| 1696 | global $debug_object; |
| 1697 | if (is_object($debug_object)) { $debug_object->debug_log_entry(1); } |
| 1698 | |
| 1699 | foreach($this->noise as $noiseElement) |
| 1700 | { |
| 1701 | if (strpos($noiseElement, $text)!==false) |
| 1702 | { |
| 1703 | return $noiseElement; |
| 1704 | } |
| 1705 | } |
| 1706 | } |
| 1707 | function __toString() |
| 1708 | { |
| 1709 | return $this->root->innertext(); |
| 1710 | } |
| 1711 | |
| 1712 | function __get($name) |
| 1713 | { |
| 1714 | switch ($name) |
| 1715 | { |
| 1716 | case 'outertext': |
| 1717 | return $this->root->innertext(); |
| 1718 | case 'innertext': |
| 1719 | return $this->root->innertext(); |
| 1720 | case 'plaintext': |
| 1721 | return $this->root->text(); |
| 1722 | case 'charset': |
| 1723 | return $this->_charset; |
| 1724 | case 'target_charset': |
| 1725 | return $this->_target_charset; |
| 1726 | } |
| 1727 | } |
| 1728 | |
| 1729 | // camel naming conventions |
| 1730 | function childNodes($idx=-1) {return $this->root->childNodes($idx);} |
| 1731 | function firstChild() {return $this->root->first_child();} |
| 1732 | function lastChild() {return $this->root->last_child();} |
| 1733 | function createElement($name, $value=null) {return @str_get_html("<$name>$value</$name>")->first_child();} |
| 1734 | function createTextNode($value) {return @end(str_get_html($value)->nodes);} |
| 1735 | function getElementById($id) {return $this->find("#$id", 0);} |
| 1736 | function getElementsById($id, $idx=null) {return $this->find("#$id", $idx);} |
| 1737 | function getElementByTagName($name) {return $this->find($name, 0);} |
| 1738 | function getElementsByTagName($name, $idx=-1) {return $this->find($name, $idx);} |
| 1739 | function loadFile() {$args = func_get_args();$this->load_file($args);} |
| 1740 | } |
| 1741 | |
| 1742 | ?> |