| 1 |
<?php |
| 2 |
|
| 3 |
namespace ImportWP\Common\Importer\File; |
| 4 |
|
| 5 |
use ImportWP\Common\Importer\FileInterface; |
| 6 |
use ImportWP\Common\Importer\State\ImporterState; |
| 7 |
|
| 8 |
class XMLFile extends AbstractIndexedFile implements FileInterface |
| 9 |
{ |
| 10 |
|
| 11 |
/** |
| 12 |
* Base path |
| 13 |
* |
| 14 |
* Name of the files base path node, added onto the end of base_path_segments. |
| 15 |
* e.g. if record path is 'records/record', base_path would be 'record'. |
| 16 |
* |
| 17 |
* @var string |
| 18 |
*/ |
| 19 |
protected $base_path; |
| 20 |
|
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/** |
| 22 |
* Base path segments |
| 23 |
* |
| 24 |
* Stores a list of nodes up to and not including the final base_path |
| 25 |
* e.g. if base_path is 'records/record' , base_path_node would be ['records'] |
| 26 |
* |
| 27 |
* @var string[] |
| 28 |
*/ |
| 29 |
protected $base_path_segments = array(); |
| 30 |
|
| 31 |
/** |
| 32 |
* Open nodes |
| 33 |
* |
| 34 |
* List of nodes that have not been opened so far while parsing the file. |
| 35 |
* |
| 36 |
* @var string[] |
| 37 |
*/ |
| 38 |
protected $open_nodes = array(); |
| 39 |
|
| 40 |
protected $record_offset = 0; |
| 41 |
protected $chunk_size = 8192; |
| 42 |
protected $depth = 0; |
| 43 |
protected $node_list = array(); |
| 44 |
protected $chunk; |
| 45 |
protected $chunk_offset = 0; |
| 46 |
|
| 47 |
protected $record_counter = 0; |
| 48 |
protected $record_start_index = 0; |
| 49 |
|
| 50 |
/** |
| 51 |
* Record Opened |
| 52 |
* |
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* Flag to say we are parsing data within the chosen record path. |
| 54 |
* |
| 55 |
* @var boolean |
| 56 |
*/ |
| 57 |
protected $record_opened = false; |
| 58 |
protected $last_record_incomplete = false; |
| 59 |
protected $record_patch_cache_key = ''; |
| 60 |
|
| 61 |
/** |
| 62 |
* Set base path for records |
| 63 |
* |
| 64 |
* @param string $base_path |
| 65 |
*/ |
| 66 |
public function setRecordPath($base_path = '/') |
| 67 |
{ |
| 68 |
// strip slash from start |
| 69 |
if (strpos($base_path, '/') === 0) { |
| 70 |
$base_path = substr($base_path, 1); |
| 71 |
} |
| 72 |
|
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// split basepath in segments |
| 74 |
$this->base_path_segments = explode('/', $base_path); |
| 75 |
array_filter($this->base_path_segments, function ($value) { |
| 76 |
return $value !== ""; |
| 77 |
}); |
| 78 |
|
| 79 |
if (!empty($this->base_path_segments)) { |
| 80 |
$this->record_patch_cache_key = implode('_', $this->base_path_segments); |
| 81 |
$base_path = array_pop($this->base_path_segments); |
| 82 |
} |
| 83 |
|
| 84 |
$this->base_path = $base_path; |
| 85 |
} |
| 86 |
|
| 87 |
/** |
| 88 |
* Get record |
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* |
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* @param int $index |
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* |
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* @return string |
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*/ |
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public function getRecord($index = 0) |
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{ |
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$record = parent::getRecord($index); |
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|
| 98 |
if ($index === $this->getRecordCount() - 1 && true === $this->last_record_incomplete) { |
| 99 |
$record = $this->fixRecord($record); |
| 100 |
} |
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|
| 102 |
return $this->wrapWithRecordTag($record); |
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} |
| 104 |
|
| 105 |
/** |
| 106 |
* Fix a broken xml segment |
| 107 |
* |
| 108 |
* @param $record |
| 109 |
* |
| 110 |
* @return bool|string |
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*/ |
| 112 |
public function fixRecord($record) |
| 113 |
{ |
| 114 |
$open = "/<[^\/][^>]+[^\/]>/"; |
| 115 |
$close = "/<\/[^>]+[^\/]>/"; |
| 116 |
$depth = 0; |
| 117 |
$started = false; |
| 118 |
$open_nodes = array(); |
| 119 |
|
| 120 |
$chunk = $record; |
| 121 |
|
| 122 |
while (preg_match( |
| 123 |
"/<[^?|!\-\-][^>]*>/", |
| 124 |
$chunk, |
| 125 |
$matches, |
| 126 |
PREG_OFFSET_CAPTURE |
| 127 |
) !== 0) { |
| 128 |
if (isset($matches[0]) && isset($matches[0][0])) { |
| 129 |
list($captured, $offset) = $matches[0]; |
| 130 |
|
| 131 |
if (preg_match($open, $captured) === 1) { |
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$started = true; |
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$depth++; |
| 134 |
$node_name = $this->getNodeName($captured); |
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$open_nodes[] = $node_name; |
| 136 |
} else if (preg_match($close, $captured) === 1) { |
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$depth--; |
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array_pop($open_nodes); |
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} |
| 140 |
|
| 141 |
$string_offset = $offset + strlen($captured); |
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$chunk = substr($chunk, $string_offset); |
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} |
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|
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if ($started && 0 === $depth) { |
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// We should be at the end of the xml |
| 147 |
return substr($record, 0, strlen($chunk)); |
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} |
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} |
| 150 |
|
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if (!empty($open_nodes)) { |
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// Add closing tags for open nodes |
| 153 |
foreach ($open_nodes as $node) { |
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$record .= "</{$node}>"; |
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} |
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} |
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|
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return $record; |
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} |
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|
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/** |
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* Get node name from xml tag |
| 163 |
* |
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* @param $node |
| 165 |
* |
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* @return bool|string |
| 167 |
*/ |
| 168 |
public function getNodeName($node) |
| 169 |
{ |
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|
| 171 |
preg_match("/<\/?([a-zA-Z0-9\-_\.:]+)[ ]*[^>]*>/", $node, $matches); |
| 172 |
if (isset($matches[0]) && isset($matches[1])) { |
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$name = $matches[1]; |
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} else { |
| 175 |
$name = substr($node, 1, strlen($node) - 2); |
| 176 |
} |
| 177 |
|
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return $name; |
| 179 |
} |
| 180 |
|
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/** |
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* Generate file position index. |
| 183 |
* |
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* Read through entire xml file generating record start and end positions |
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* |
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* @return mixed |
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*/ |
| 188 |
public function generateIndex() |
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{ |
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$this->record_counter = 0; |
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$this->record_start_index = 0; |
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|
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$last_percent = 0; |
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$size = intval($this->get_file_size($this->getFileHandle())); |
| 195 |
$this->config->set('process', 0); |
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|
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rewind($this->getFileHandle()); |
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|
| 199 |
while (!feof($this->getFileHandle())) { |
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|
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$this->chunk .= $this->getChunk(); |
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$this->chunk = $this->read_chunk_xml_nodes($this->chunk); |
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|
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// only read the first 1mb of file |
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if ($this->is_processing && ($this->record_counter > 0 || ftell($this->getFileHandle()) > $this->process_max_size)) { |
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break; |
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} |
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|
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$current_pos = intval(ftell($this->getFileHandle())); |
| 210 |
if ($size > 0 && $current_pos > 0) { |
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$percent = round($current_pos / $size, 2); |
| 212 |
if ($percent > $last_percent) { |
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|
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do_action('iwp/importer/process', $last_percent * 100); |
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$this->config->set('process', $last_percent * 100); |
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$last_percent = $percent; |
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|
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if (!is_null(iwp()->importer)) { |
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$state = ImporterState::get_state(iwp()->importer->getId()); |
| 220 |
if (isset($state['status']) && $state['status'] === 'cancelled') { |
| 221 |
return; |
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} |
| 223 |
} |
| 224 |
} |
| 225 |
} |
| 226 |
} |
| 227 |
|
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// if file is incomplete do we try and fix the record, or skip it? |
| 229 |
if (!$this->is_processing && true === $this->record_opened) { |
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$this->record_opened = false; |
| 231 |
$this->last_record_incomplete = true; |
| 232 |
$this->setIndex( |
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$this->record_counter, |
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$this->record_start_index, |
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$this->chunk_offset |
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); |
| 237 |
} |
| 238 |
} |
| 239 |
|
| 240 |
/** |
| 241 |
* Read chunk from file |
| 242 |
* |
| 243 |
* @return bool|string |
| 244 |
*/ |
| 245 |
public function getChunk() |
| 246 |
{ |
| 247 |
return fread($this->getFileHandle(), $this->chunk_size); |
| 248 |
} |
| 249 |
|
| 250 |
/** |
| 251 |
* Read all xml nodes in chunk |
| 252 |
*/ |
| 253 |
public function readChunkXmlNodes() |
| 254 |
{ |
| 255 |
$tags = [ |
| 256 |
["<?", "?>", true, 0], |
| 257 |
["<!--", "-->", true, 0], |
| 258 |
["<![CDATA[", "]]>", true, 0], |
| 259 |
["<!", ">", true, 0], |
| 260 |
["</", ">", false, -1], |
| 261 |
["<", "/>", false, 0], |
| 262 |
["<", ">", false, 1], |
| 263 |
]; |
| 264 |
|
| 265 |
while (preg_match("/<[^>]+>/", $this->chunk, $matches, PREG_OFFSET_CAPTURE) !== 0) { |
| 266 |
list($captured, $offset) = $matches[0]; |
| 267 |
|
| 268 |
$this->record_offset = $offset; |
| 269 |
|
| 270 |
foreach ($tags as $tag) { |
| 271 |
|
| 272 |
list($open_tag, $close_tag, $search_for_close, $depth_delta) = $tag; |
| 273 |
|
| 274 |
if (strpos($captured, $open_tag) === 0) { |
| 275 |
|
| 276 |
if (strlen($captured) - strlen($close_tag) === strpos($captured, $close_tag)) { |
| 277 |
// Tag Found |
| 278 |
if ($search_for_close === false) { |
| 279 |
$this->record_node($captured, $depth_delta); |
| 280 |
} |
| 281 |
break; |
| 282 |
} elseif ($search_for_close === true) { |
| 283 |
$close_tag_position = strpos($this->chunk, $close_tag, $offset); |
| 284 |
if ($close_tag_position !== false) { |
| 285 |
// Close tag is found in current chunk |
| 286 |
$captured = substr($this->chunk, $offset, $close_tag_position + strlen($close_tag) - $offset); |
| 287 |
if ($search_for_close === false) { |
| 288 |
$this->record_node($captured, $depth_delta); |
| 289 |
} |
| 290 |
} else { |
| 291 |
// We need to load next chunk to find |
| 292 |
return; |
| 293 |
} |
| 294 |
break; |
| 295 |
} |
| 296 |
} |
| 297 |
} |
| 298 |
|
| 299 |
$string_offset = $offset + strlen($captured); |
| 300 |
$this->chunk_offset += $string_offset; |
| 301 |
$this->chunk = substr($this->chunk, $string_offset); |
| 302 |
} |
| 303 |
} |
| 304 |
|
| 305 |
/** |
| 306 |
* Optimised version of readChunkXMLNodes |
| 307 |
* |
| 308 |
* @param string $chunk |
| 309 |
* @return string |
| 310 |
*/ |
| 311 |
public function read_chunk_xml_nodes($chunk) |
| 312 |
{ |
| 313 |
$tags = [ |
| 314 |
"<?" => ["<?", "?>", true, 0], |
| 315 |
"<!--" => ["<!--", "-->", true, 0], |
| 316 |
"<![CDATA[" => ["<![CDATA[", "]]>", true, 0], |
| 317 |
"<!" => ["<!", ">", true, 0], |
| 318 |
"</" => ["</", ">", false, -1], |
| 319 |
"<" => ["<", "/>", false, 0], |
| 320 |
"<" => ["<", ">", false, 1], |
| 321 |
]; |
| 322 |
|
| 323 |
// 1.Loop through the file, each node at a time |
| 324 |
$chunk_offset = 0; |
| 325 |
|
| 326 |
while (preg_match("/<[^>]+>/", $chunk, $matches, PREG_OFFSET_CAPTURE, $chunk_offset) !== 0) { |
| 327 |
list($captured, $offset) = $matches[0]; |
| 328 |
|
| 329 |
// length of content between last and current tag |
| 330 |
$content_length = ($offset - $chunk_offset); |
| 331 |
$chunk_offset += $content_length + strlen($captured); |
| 332 |
|
| 333 |
if (preg_match('/^(<\?|<!--|<!\[CDATA\[|<!|<\/|<)/', $captured, $tag_matches) !== 1) { |
| 334 |
continue; |
| 335 |
} |
| 336 |
|
| 337 |
$tags_test = []; |
| 338 |
if ($tag_matches[0] === '<') { |
| 339 |
$tags_test[] = ["<", "/>", false, 0]; |
| 340 |
$tags_test[] = ["<", ">", false, 1]; |
| 341 |
} else { |
| 342 |
$tags_test[] = $tags[$tag_matches[0]]; |
| 343 |
} |
| 344 |
|
| 345 |
// print_r($tag_matches); |
| 346 |
|
| 347 |
foreach ($tags_test as $tag) { |
| 348 |
list($open_tag, $close_tag, $search_for_close, $depth_delta) = $tag; |
| 349 |
|
| 350 |
// if (strpos($captured, $open_tag) !== 0) { |
| 351 |
// continue; |
| 352 |
// } |
| 353 |
|
| 354 |
if (strlen($captured) - strlen($close_tag) === strpos($captured, $close_tag)) { |
| 355 |
// Tag Found |
| 356 |
if ($search_for_close === false) { |
| 357 |
$this->record_node($captured, $depth_delta, $this->chunk_offset + $offset); |
| 358 |
} |
| 359 |
break; |
| 360 |
} elseif ($search_for_close === true) { |
| 361 |
$close_tag_position = strpos($chunk, $close_tag, $offset); |
| 362 |
if ($close_tag_position !== false) { |
| 363 |
// Close tag is found in current chunk |
| 364 |
$captured = substr($chunk, $offset, $close_tag_position + strlen($close_tag) - $offset); |
| 365 |
$chunk_offset = $close_tag_position + strlen($close_tag); |
| 366 |
if ($search_for_close === false) { |
| 367 |
$this->record_node($captured, $depth_delta, $this->chunk_offset + $offset); |
| 368 |
} |
| 369 |
} else { |
| 370 |
// We need to load next chunk to find |
| 371 |
$this->chunk_offset += $offset; |
| 372 |
return substr($chunk, $offset); |
| 373 |
} |
| 374 |
break; |
| 375 |
} |
| 376 |
} |
| 377 |
} |
| 378 |
|
| 379 |
$this->chunk_offset += $chunk_offset; |
| 380 |
|
| 381 |
return substr($chunk, $chunk_offset); |
| 382 |
} |
| 383 |
|
| 384 |
public function record_node($node, $depth_delta, $offset = null) |
| 385 |
{ |
| 386 |
if (is_null($offset)) { |
| 387 |
$offset = $this->chunk_offset + $this->record_offset; |
| 388 |
} |
| 389 |
|
| 390 |
$this->depth += $depth_delta; |
| 391 |
$node_name = $this->getNodeName($node); |
| 392 |
|
| 393 |
if ($depth_delta > 0) { |
| 394 |
|
| 395 |
if ($this->isRecordStart($node_name)) { |
| 396 |
$this->record_opened = true; |
| 397 |
$this->record_start_index = $offset; |
| 398 |
} |
| 399 |
|
| 400 |
$this->open_nodes[] = $node_name; |
| 401 |
$this->record_open_nodes(); |
| 402 |
} elseif ($depth_delta < 0) { |
| 403 |
|
| 404 |
array_pop($this->open_nodes); |
| 405 |
if ($this->isRecordEnd($node_name)) { |
| 406 |
$this->record_opened = false; |
| 407 |
|
| 408 |
$this->setIndex( |
| 409 |
$this->record_counter, |
| 410 |
$this->record_start_index, |
| 411 |
$offset + strlen($node) |
| 412 |
); |
| 413 |
$this->record_counter++; |
| 414 |
} |
| 415 |
} |
| 416 |
} |
| 417 |
|
| 418 |
/** |
| 419 |
* Check for record start node |
| 420 |
* |
| 421 |
* @param $node_name |
| 422 |
* |
| 423 |
* @return bool |
| 424 |
*/ |
| 425 |
public function isRecordStart($node_name) |
| 426 |
{ |
| 427 |
|
| 428 |
if ($this->base_path_segments === $this->open_nodes && $node_name === $this->base_path) { |
| 429 |
return true; |
| 430 |
} |
| 431 |
|
| 432 |
return false; |
| 433 |
} |
| 434 |
|
| 435 |
/** |
| 436 |
* Check for record end node |
| 437 |
* |
| 438 |
* @param $node_name |
| 439 |
* |
| 440 |
* @return bool |
| 441 |
*/ |
| 442 |
public function isRecordEnd($node_name) |
| 443 |
{ |
| 444 |
if ($this->record_opened === false) { |
| 445 |
return false; |
| 446 |
} |
| 447 |
|
| 448 |
if ($this->base_path_segments !== $this->open_nodes) { |
| 449 |
return false; |
| 450 |
} |
| 451 |
|
| 452 |
if ($node_name !== $this->base_path) { |
| 453 |
return false; |
| 454 |
} |
| 455 |
|
| 456 |
return true; |
| 457 |
} |
| 458 |
|
| 459 |
public function wrapWithRecordTag($record) |
| 460 |
{ |
| 461 |
$namespace_attrs = ''; |
| 462 |
$unique_matches = array(); |
| 463 |
|
| 464 |
// clear sub namespaces |
| 465 |
$record = preg_replace('/xmlns[^=]*="[^"]*"/i', '', $record); |
| 466 |
|
| 467 |
// No need to check within cdata tags |
| 468 |
$temp = preg_replace('/<!\[CDATA\[.*?\]\]>/', '', $record); |
| 469 |
|
| 470 |
// $new_regex = '/<([^:!\/]+):[^ ]+[^>]*>/'; |
| 471 |
// $new_regex = '/<([^!\/>]+):[^>]+>/'; // breaking due to attr="http://", would match the : |
| 472 |
$new_regex = '/<([^!\/">]+):[^>]+>/'; |
| 473 |
|
| 474 |
while (preg_match($new_regex, $temp, $matches, PREG_OFFSET_CAPTURE) !== 0) { |
| 475 |
if (isset($matches[0]) && isset($matches[0][0]) && isset($matches[1]) && isset($matches[1][0])) { |
| 476 |
list($match, $offset) = $matches[0]; |
| 477 |
$namespace = trim($matches[1][0]); |
| 478 |
|
| 479 |
// TODO: update regex to not need this |
| 480 |
$namespace_parts = explode(' ', $namespace); |
| 481 |
$namespace = $namespace_parts[count($namespace_parts) - 1]; |
| 482 |
|
| 483 |
if (!in_array($namespace, $unique_matches)) { |
| 484 |
$unique_matches[] = $namespace; |
| 485 |
$namespace_attrs .= ' xmlns:' . $namespace . '="false"'; |
| 486 |
} |
| 487 |
|
| 488 |
$temp = substr($temp, $offset + strlen($match)); |
| 489 |
} |
| 490 |
} |
| 491 |
|
| 492 |
$open_tag = '<record' . $namespace_attrs . '>'; |
| 493 |
$close_tag = '</record>'; |
| 494 |
return $open_tag . $record . $close_tag; |
| 495 |
} |
| 496 |
|
| 497 |
public function record_open_nodes() |
| 498 |
{ |
| 499 |
$key = '/' . implode('/', $this->open_nodes); |
| 500 |
if (!in_array($key, $this->node_list, true)) { |
| 501 |
array_push($this->node_list, $key); |
| 502 |
} |
| 503 |
} |
| 504 |
|
| 505 |
public function get_node_list() |
| 506 |
{ |
| 507 |
|
| 508 |
$this->node_list = $this->config->get('node_list'); |
| 509 |
if (!is_array($this->node_list)) { |
| 510 |
$this->node_list = array(); |
| 511 |
} |
| 512 |
|
| 513 |
$loaded = $this->loadIndex(); |
| 514 |
if (empty($this->node_list) || !$loaded) { |
| 515 |
$this->generateIndex(); |
| 516 |
$this->storeIndexes(); |
| 517 |
|
| 518 |
$this->config->set('node_list', $this->node_list); |
| 519 |
} |
| 520 |
|
| 521 |
return $this->node_list; |
| 522 |
} |
| 523 |
|
| 524 |
public final function getFileIndexKey() |
| 525 |
{ |
| 526 |
$key = sprintf('file_index-%s', $this->record_patch_cache_key); |
| 527 |
|
| 528 |
return $key; |
| 529 |
} |
| 530 |
} |
| 531 |
|
