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overrides.php
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| 1 | <?php |
| 2 | /** |
| 3 | * @package VikAppointments |
| 4 | * @subpackage core |
| 5 | * @author E4J s.r.l. |
| 6 | * @copyright Copyright (C) 2024 E4J s.r.l. All Rights Reserved. |
| 7 | * @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL |
| 8 | * @link https://vikwp.com |
| 9 | */ |
| 10 | |
| 11 | // No direct access |
| 12 | defined('ABSPATH') or die('No script kiddies please!'); |
| 13 | |
| 14 | JLoader::import('adapter.mvc.models.form'); |
| 15 | |
| 16 | /** |
| 17 | * VikAppointments plugin Overrides model. |
| 18 | * @wponly |
| 19 | * |
| 20 | * @since 1.2.13 |
| 21 | * @see JModel |
| 22 | */ |
| 23 | class VikAppointmentsModelOverrides extends JModel |
| 24 | { |
| 25 | /** |
| 26 | * A list containing all the back-end views to exclude. |
| 27 | * |
| 28 | * @var array |
| 29 | */ |
| 30 | public $_excludedAdminViews = ['getpro', 'gotopro', 'overrides', 'updateprogram']; |
| 31 | |
| 32 | /** |
| 33 | * A list containing all the front-end views to exclude. |
| 34 | * |
| 35 | * @var array |
| 36 | */ |
| 37 | public $_excludedSiteViews = []; |
| 38 | |
| 39 | /** |
| 40 | * A list containing all the widgets to exclude. |
| 41 | * |
| 42 | * @var array |
| 43 | */ |
| 44 | public $_excludedModules = []; |
| 45 | |
| 46 | /** |
| 47 | * A list containing all the layouts to exclude. |
| 48 | * |
| 49 | * @var array |
| 50 | */ |
| 51 | public $_excludedLayouts = [ |
| 52 | // skip alert reserved to Joomla platform |
| 53 | '\/site\/layouts\/blocks\/alert\.php$', |
| 54 | // any file that ends with Joomla (e.g. blocks/login/joomla.php) |
| 55 | 'joomla\.php$', |
| 56 | // the leftboard menu created used by Joomla |
| 57 | '\/admin\/layouts\/menu\/leftboard', |
| 58 | ]; |
| 59 | |
| 60 | /** |
| 61 | * Checks whether the specified file supports overrides. |
| 62 | * |
| 63 | * @param mixed $tree Either the tree array or the client string. |
| 64 | * @param string $file The file to look for. |
| 65 | * |
| 66 | * @return mixed The node found on success, false otherwise. |
| 67 | */ |
| 68 | public function isSupported($tree, $file) |
| 69 | { |
| 70 | if (!is_array($tree)) |
| 71 | { |
| 72 | // client given, generate tree |
| 73 | $tree = $this->getTree($tree); |
| 74 | } |
| 75 | |
| 76 | // look for a leaf |
| 77 | if (isset($tree['folder']) && !$tree['folder']) |
| 78 | { |
| 79 | // leaf found, look for a match with the file path |
| 80 | if ($file == $tree['path'] || $file == $tree['override']) |
| 81 | { |
| 82 | // match found, override supported |
| 83 | return $tree; |
| 84 | } |
| 85 | else |
| 86 | { |
| 87 | // match not found, go ahead |
| 88 | return false; |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | // scan files if we are inside a node |
| 93 | if (isset($tree['files'])) |
| 94 | { |
| 95 | $tree = $tree['files']; |
| 96 | } |
| 97 | |
| 98 | // iterate nodes |
| 99 | foreach ($tree as $node) |
| 100 | { |
| 101 | // recursively check whether the node contains |
| 102 | // a file matching the specified path |
| 103 | if ($leaf = $this->isSupported($node, $file)) |
| 104 | { |
| 105 | // leaf found, override supported |
| 106 | return $leaf; |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | // file not supported |
| 111 | return false; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Creates the tree containing the available overrides for the specified client. |
| 116 | * |
| 117 | * @param string $client The client to look for. Supports the |
| 118 | * following options: |
| 119 | * - administrator back-end views; |
| 120 | * - site front-end views; |
| 121 | * - layouts admin, site and core layouts; |
| 122 | * - modules plugin widgets. |
| 123 | * |
| 124 | * @return array The resulting tree. |
| 125 | */ |
| 126 | public function getTree($client) |
| 127 | { |
| 128 | // import file system helper |
| 129 | JLoader::import('adapter.filesystem.folder'); |
| 130 | |
| 131 | // look for administrator/site views |
| 132 | if (preg_match("/^(admin(?:istrator)?|site)$/i", $client)) |
| 133 | { |
| 134 | // scan views overrides |
| 135 | $tree = $this->getViewsTree($client); |
| 136 | } |
| 137 | else if (preg_match("/^layouts?$/i", $client)) |
| 138 | { |
| 139 | // scan layouts overrides |
| 140 | $tree = $this->getLayoutsTree(); |
| 141 | } |
| 142 | else if (preg_match("/^(modules?|widgets?)$/i", $client)) |
| 143 | { |
| 144 | // scan modules overrides |
| 145 | $tree = $this->getModulesTree(); |
| 146 | } |
| 147 | else |
| 148 | { |
| 149 | // client not supported, throw exception |
| 150 | throw new Exception(sprintf('Override [%s] client not supported', $client), 500); |
| 151 | } |
| 152 | |
| 153 | return $tree; |
| 154 | } |
| 155 | |
| 156 | /** |
| 157 | * Creates the tree containing the available overrides for the admin/site views. |
| 158 | * |
| 159 | * @param string $client The client to look for. |
| 160 | * |
| 161 | * @return array The resulting tree. |
| 162 | */ |
| 163 | protected function getViewsTree($client) |
| 164 | { |
| 165 | $tree = []; |
| 166 | |
| 167 | // build path according to the specified client |
| 168 | if (preg_match("/^admin(?:istrator)?$/i", $client)) |
| 169 | { |
| 170 | // admin path |
| 171 | $path = VAPADMIN . DIRECTORY_SEPARATOR . 'views'; |
| 172 | |
| 173 | // get list of excluded views |
| 174 | $excluded = $this->_excludedAdminViews; |
| 175 | |
| 176 | // define client folder |
| 177 | $clientFolder = 'admin'; |
| 178 | } |
| 179 | else |
| 180 | { |
| 181 | // site path |
| 182 | $path = VAPBASE . DIRECTORY_SEPARATOR . 'views'; |
| 183 | |
| 184 | // get list of excluded views |
| 185 | $excluded = $this->_excludedSiteViews; |
| 186 | |
| 187 | // define client folder |
| 188 | $clientFolder = 'site'; |
| 189 | } |
| 190 | |
| 191 | // retrieve temporary uploads path |
| 192 | $upload = wp_upload_dir(); |
| 193 | |
| 194 | // create base path of overrides |
| 195 | $overridesPath = JPath::clean($upload['basedir'] . '/vikappointments/overrides/' . $clientFolder . '/'); |
| 196 | |
| 197 | // get all folders at the specified path |
| 198 | $views = JFolder::folders($path, '.', $recursive = false, $fullPath = true); |
| 199 | |
| 200 | // check whether the plugin supports specific views only for the WordPress platform |
| 201 | if (JFolder::exists(VIKAPPOINTMENTS_LIBRARIES . '/mvc/' . $clientFolder . '/views')) |
| 202 | { |
| 203 | $views = array_merge($views, JFolder::folders(VIKAPPOINTMENTS_LIBRARIES . '/mvc/' . $clientFolder . '/views', '.', $recursive = false, $fullPath = true)); |
| 204 | } |
| 205 | |
| 206 | // iterate views and extract all the supported templates |
| 207 | foreach ($views as $view) |
| 208 | { |
| 209 | $viewName = basename($view); |
| 210 | |
| 211 | // make sure the view should not be excluded |
| 212 | if (!$this->isExcluded($viewName, $excluded)) |
| 213 | { |
| 214 | // create node to inject within the tree |
| 215 | $node = [ |
| 216 | 'name' => $viewName, |
| 217 | 'path' => $view, |
| 218 | 'folder' => true, |
| 219 | 'files' => [], |
| 220 | ]; |
| 221 | |
| 222 | // build path containing the view templates |
| 223 | $tmpl = JPath::clean($view . '/tmpl'); |
| 224 | |
| 225 | // scan files within the view |
| 226 | $files = JFolder::files($tmpl, '\.php$', $recursive = false, $fullPath = true); |
| 227 | |
| 228 | // iterate files |
| 229 | foreach ($files as $file) |
| 230 | { |
| 231 | $filename = basename($file); |
| 232 | |
| 233 | // create override path |
| 234 | $fileOverridePath = $overridesPath . $viewName . DIRECTORY_SEPARATOR . $filename; |
| 235 | |
| 236 | $published = false; |
| 237 | |
| 238 | // look for an existing override |
| 239 | if (JFile::exists($fileOverridePath)) |
| 240 | { |
| 241 | // the file owns an override |
| 242 | $override = $published = true; |
| 243 | } |
| 244 | else |
| 245 | { |
| 246 | // look for an unpublished override |
| 247 | $unpublishedPath = $overridesPath . $viewName . DIRECTORY_SEPARATOR . '__' . $filename; |
| 248 | |
| 249 | // check whether the file exists |
| 250 | if (JFile::exists($unpublishedPath)) |
| 251 | { |
| 252 | // the file owns an unpublished override |
| 253 | $override = true; |
| 254 | } |
| 255 | else |
| 256 | { |
| 257 | // missing override |
| 258 | $override = false; |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | // register node within the parent |
| 263 | $node['files'][] = [ |
| 264 | 'name' => $filename, |
| 265 | 'path' => $file, |
| 266 | 'override' => $fileOverridePath, |
| 267 | 'folder' => false, |
| 268 | 'has' => $override, |
| 269 | 'published' => $published, |
| 270 | ]; |
| 271 | } |
| 272 | |
| 273 | // skip the folder in case it does not contain any files |
| 274 | if (!$node['files']) |
| 275 | { |
| 276 | continue; |
| 277 | } |
| 278 | |
| 279 | // append node to the tree |
| 280 | $tree[] = $node; |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | // sort folders by ascending name |
| 285 | usort($tree, function($a, $b) |
| 286 | { |
| 287 | return strcasecmp($a['name'], $b['name']); |
| 288 | }); |
| 289 | |
| 290 | return $tree; |
| 291 | } |
| 292 | |
| 293 | /** |
| 294 | * Creates the tree containing the available overrides for the layouts. |
| 295 | * The first level will always contain these nodes: admin, site, core. |
| 296 | * |
| 297 | * @return array The resulting tree. |
| 298 | */ |
| 299 | protected function getLayoutsTree() |
| 300 | { |
| 301 | $tree = []; |
| 302 | |
| 303 | // administrator layouts |
| 304 | $tree[] = [ |
| 305 | 'name' => 'admin', |
| 306 | 'path' => VAPADMIN . DIRECTORY_SEPARATOR . 'layouts', |
| 307 | 'folder' => true, |
| 308 | 'files' => [], |
| 309 | ]; |
| 310 | |
| 311 | // site layouts |
| 312 | $tree[] = [ |
| 313 | 'name' => 'site', |
| 314 | 'path' => VAPBASE . DIRECTORY_SEPARATOR . 'layouts', |
| 315 | 'folder' => true, |
| 316 | 'files' => [], |
| 317 | ]; |
| 318 | |
| 319 | // system layouts |
| 320 | $tree[] = [ |
| 321 | 'name' => 'core', |
| 322 | 'path' => VIKAPPOINTMENTS_LIBRARIES . DIRECTORY_SEPARATOR . 'html', |
| 323 | 'folder' => true, |
| 324 | 'files' => [], |
| 325 | ]; |
| 326 | |
| 327 | // retrieve temporary uploads path |
| 328 | $upload = wp_upload_dir(); |
| 329 | |
| 330 | // create base path of overrides |
| 331 | $overridesPath = JPath::clean($upload['basedir'] . '/vikappointments/layouts/'); |
| 332 | |
| 333 | // iterate main nodes |
| 334 | foreach ($tree as &$node) |
| 335 | { |
| 336 | if ($node['name'] == 'site') |
| 337 | { |
| 338 | $op = $overridesPath . 'site' . DIRECTORY_SEPARATOR; |
| 339 | } |
| 340 | else |
| 341 | { |
| 342 | $op = $overridesPath . 'admin' . DIRECTORY_SEPARATOR; |
| 343 | |
| 344 | if ($node['name'] == 'core') |
| 345 | { |
| 346 | // append HTML folder in case of core client |
| 347 | $op .= 'html' . DIRECTORY_SEPARATOR; |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | // scan and construct node recursively |
| 352 | $this->_scanNode($node, $op); |
| 353 | } |
| 354 | |
| 355 | return $tree; |
| 356 | } |
| 357 | |
| 358 | /** |
| 359 | * Creates the tree containing the available overrides for the plugin widgets. |
| 360 | * |
| 361 | * @return array The resulting tree. |
| 362 | */ |
| 363 | protected function getModulesTree() |
| 364 | { |
| 365 | $tree = []; |
| 366 | |
| 367 | // retrieve temporary uploads path |
| 368 | $upload = wp_upload_dir(); |
| 369 | |
| 370 | // create base path of overrides |
| 371 | $overridesPath = JPath::clean($upload['basedir'] . '/vikappointments/overrides/modules/'); |
| 372 | |
| 373 | // get all folders at the specified path |
| 374 | $modules = JFolder::folders(VAPMODULES, '.', $recursive = false, $fullPath = true); |
| 375 | |
| 376 | // iterate modules and extract all the supported templates |
| 377 | foreach ($modules as $module) |
| 378 | { |
| 379 | $modName = basename($module); |
| 380 | |
| 381 | // make sure the module should not be excluded |
| 382 | if (!$this->isExcluded($modName, $this->_excludedModules)) |
| 383 | { |
| 384 | // create node to inject within the tree |
| 385 | $node = [ |
| 386 | 'name' => preg_replace("/^mod_vikappointments_/i", '', $modName), |
| 387 | 'path' => $module, |
| 388 | 'folder' => true, |
| 389 | 'files' => [], |
| 390 | ]; |
| 391 | |
| 392 | // build path containing the module templates |
| 393 | $tmpl = JPath::clean($module . '/tmpl'); |
| 394 | |
| 395 | // scan files within the module |
| 396 | $files = JFolder::files($tmpl, '\.php$', $recursive = false, $fullPath = true); |
| 397 | |
| 398 | if (!$files) |
| 399 | { |
| 400 | /** |
| 401 | * Do not include module within the tree in case there are not overridable files. |
| 402 | * |
| 403 | * @since 1.3 |
| 404 | */ |
| 405 | continue; |
| 406 | } |
| 407 | |
| 408 | // iterate files |
| 409 | foreach ($files as $file) |
| 410 | { |
| 411 | $filename = basename($file); |
| 412 | |
| 413 | // create override path |
| 414 | $fileOverridePath = $overridesPath . $modName . DIRECTORY_SEPARATOR . $filename; |
| 415 | |
| 416 | $published = false; |
| 417 | |
| 418 | // look for an existing override |
| 419 | if (JFile::exists($fileOverridePath)) |
| 420 | { |
| 421 | // the file owns an override |
| 422 | $override = $published = true; |
| 423 | } |
| 424 | else |
| 425 | { |
| 426 | // look for an unpublished override |
| 427 | $unpublishedPath = $overridesPath . $modName . DIRECTORY_SEPARATOR . '__' . $filename; |
| 428 | |
| 429 | // check whether the file exists |
| 430 | if (JFile::exists($unpublishedPath)) |
| 431 | { |
| 432 | // the file owns an unpublished override |
| 433 | $override = true; |
| 434 | } |
| 435 | else |
| 436 | { |
| 437 | // missing override |
| 438 | $override = false; |
| 439 | } |
| 440 | } |
| 441 | |
| 442 | // register node within the parent |
| 443 | $node['files'][] = [ |
| 444 | 'name' => $filename, |
| 445 | 'path' => $file, |
| 446 | 'override' => $fileOverridePath, |
| 447 | 'folder' => false, |
| 448 | 'has' => $override, |
| 449 | 'published' => $published, |
| 450 | ]; |
| 451 | } |
| 452 | |
| 453 | // append node to the tree |
| 454 | $tree[] = $node; |
| 455 | } |
| 456 | } |
| 457 | |
| 458 | return $tree; |
| 459 | } |
| 460 | |
| 461 | /** |
| 462 | * Recursive function used to scan the folder and files within the specified node. |
| 463 | * |
| 464 | * @param array &$node The node to scan. |
| 465 | * @param string $base The base path in which the overrides should locate. |
| 466 | * |
| 467 | * @return void |
| 468 | */ |
| 469 | protected function _scanNode(&$node, $base) |
| 470 | { |
| 471 | // get all folders at the node path |
| 472 | $folders = JFolder::folders($node['path'], '.', $recursive = false, $fullPath = true); |
| 473 | |
| 474 | // get all files at the node path |
| 475 | $files = JFolder::files($node['path'], '\.php$', $recursive = false, $fullPath = true); |
| 476 | |
| 477 | // iterate folders |
| 478 | foreach ($folders as $folder) |
| 479 | { |
| 480 | // make sure the folder should not be excluded |
| 481 | if (!$this->isExcluded($folder, $this->_excludedLayouts)) |
| 482 | { |
| 483 | $folderName = basename($folder); |
| 484 | |
| 485 | // create folder node |
| 486 | $tmp = [ |
| 487 | 'name' => basename($folder), |
| 488 | 'path' => $folder, |
| 489 | 'folder' => true, |
| 490 | 'files' => [], |
| 491 | ]; |
| 492 | |
| 493 | // folder recursive scan |
| 494 | $this->_scanNode($tmp, $base . $folderName . DIRECTORY_SEPARATOR); |
| 495 | |
| 496 | // append folder to main node |
| 497 | $node['files'][] = $tmp; |
| 498 | } |
| 499 | } |
| 500 | |
| 501 | // iterate files |
| 502 | foreach ($files as $file) |
| 503 | { |
| 504 | // make sure the file should not be excluded |
| 505 | if (!$this->isExcluded($file, $this->_excludedLayouts)) |
| 506 | { |
| 507 | $filename = basename($file); |
| 508 | |
| 509 | // create override path |
| 510 | $fileOverridePath = $base . $filename; |
| 511 | |
| 512 | $published = false; |
| 513 | |
| 514 | // look for an existing override |
| 515 | if (JFile::exists($fileOverridePath)) |
| 516 | { |
| 517 | // the file owns an override |
| 518 | $override = $published = true; |
| 519 | } |
| 520 | else |
| 521 | { |
| 522 | // look for an unpublished override |
| 523 | $unpublishedPath = $base . DIRECTORY_SEPARATOR . '__' . $filename; |
| 524 | |
| 525 | // check whether the file exists |
| 526 | if (JFile::exists($unpublishedPath)) |
| 527 | { |
| 528 | // the file owns an unpublished override |
| 529 | $override = true; |
| 530 | } |
| 531 | else |
| 532 | { |
| 533 | // missing override |
| 534 | $override = false; |
| 535 | } |
| 536 | } |
| 537 | |
| 538 | // create file node |
| 539 | $tmp = [ |
| 540 | 'name' => $filename, |
| 541 | 'path' => $file, |
| 542 | 'override' => $fileOverridePath, |
| 543 | 'folder' => false, |
| 544 | 'has' => $override, |
| 545 | 'published' => $published, |
| 546 | ]; |
| 547 | |
| 548 | // append folder to main node |
| 549 | $node['files'][] = $tmp; |
| 550 | } |
| 551 | } |
| 552 | } |
| 553 | |
| 554 | /** |
| 555 | * Check whether the specified path matches one of |
| 556 | * the specified regex. |
| 557 | * |
| 558 | * @param string $path The path to look for. |
| 559 | * @param array $pool An array of regex. |
| 560 | * |
| 561 | * @return boolean True if excluded, false otherwise. |
| 562 | */ |
| 563 | protected function isExcluded($path, $pool) |
| 564 | { |
| 565 | $path = preg_replace("/[\\\\]/", '/', $path); |
| 566 | |
| 567 | // iterate pool |
| 568 | foreach ($pool as $match) |
| 569 | { |
| 570 | // exec regex |
| 571 | if (preg_match("/$match/i", $path)) |
| 572 | { |
| 573 | // inside the pool, exclude file |
| 574 | return true; |
| 575 | } |
| 576 | } |
| 577 | |
| 578 | // can include file |
| 579 | return false; |
| 580 | } |
| 581 | |
| 582 | /** |
| 583 | * Returns a lookup containing all the existing (and published) overrides, |
| 584 | * categorized by override group (admin, site, layouts, modules). |
| 585 | * |
| 586 | * Only the files that are an actual override of the core files will be taken here. |
| 587 | * In example, default_foo_bar.php is not part of VikAppointments and therefore it |
| 588 | * will be discarded. |
| 589 | * |
| 590 | * @return array |
| 591 | */ |
| 592 | public function getAllOverrides() |
| 593 | { |
| 594 | // retrieve temporary uploads path |
| 595 | $upload = wp_upload_dir(); |
| 596 | |
| 597 | // fetch all the files created on each section |
| 598 | $lookup = [ |
| 599 | 'admin' => JFolder::files($upload['basedir'] . '/vikappointments/overrides/admin/', '\.php$', true, true), |
| 600 | 'site' => JFolder::files($upload['basedir'] . '/vikappointments/overrides/site/', '\.php$', true, true), |
| 601 | 'layouts' => JFolder::files($upload['basedir'] . '/vikappointments/layouts/', '\.php$', true, true), |
| 602 | 'modules' => JFolder::files($upload['basedir'] . '/vikappointments/overrides/modules/', '\.php$', true, true), |
| 603 | ]; |
| 604 | |
| 605 | // exclude all the overrides that are actually unpublished |
| 606 | foreach ($lookup as &$files) |
| 607 | { |
| 608 | if (!is_array($files)) |
| 609 | { |
| 610 | $files = []; |
| 611 | } |
| 612 | |
| 613 | $files = array_values(array_filter($files, function($file) |
| 614 | { |
| 615 | // the override file name must not start with 2 underscores |
| 616 | return strpos(basename($file), '__') !== 0; |
| 617 | })); |
| 618 | } |
| 619 | |
| 620 | // get rid of the sections without files |
| 621 | return array_filter($lookup); |
| 622 | } |
| 623 | |
| 624 | /** |
| 625 | * Calculates the differences among the provided override and the original file. |
| 626 | * |
| 627 | * @param string $override The override buffer. |
| 628 | * @param string $original The original buffer. |
| 629 | * @param array $options A configuration array: |
| 630 | * - use_spaces bool Whether the tabs should be converted into 4-spaces (true by default); |
| 631 | * - lines_before int The number of lines to display before a detected difference (2 by default); |
| 632 | * - lines_after int The number of lines to display after a detected difference (2 by default). |
| 633 | * |
| 634 | * @return array An array holding the detected differences. The key of the array indicates the real line of the file. |
| 635 | * The values of the list are arrays containing the content of the file (index 0) and the detected difference: |
| 636 | * -1 for delete, 0 for keep and 1 for insert. |
| 637 | */ |
| 638 | public function calcDiff(string $override, string $original, $options = []) |
| 639 | { |
| 640 | if ($options['use_spaces'] ?? true) |
| 641 | { |
| 642 | // convert tabs into 4 spaces |
| 643 | $override = preg_replace("/\t/", ' ', $override); |
| 644 | $original = preg_replace("/\t/", ' ', $original); |
| 645 | } |
| 646 | |
| 647 | if ($override === $original) |
| 648 | { |
| 649 | // no differences we don't need to proceed |
| 650 | return []; |
| 651 | } |
| 652 | |
| 653 | // the number of lines to display before and after the detected differences |
| 654 | $options['lines_before'] = abs((int) ($options['lines_before'] ?? 2)); |
| 655 | $options['lines_after'] = abs((int) ($options['lines_after'] ?? 2)); |
| 656 | |
| 657 | // convert file buffers into an array of lines |
| 658 | $override = preg_split("/\R/", $override); |
| 659 | $original = preg_split("/\R/", $original); |
| 660 | |
| 661 | // calculate differences |
| 662 | $lines = (new Fisharebest\Algorithm\MyersDiff)->calculate($original, $override); |
| 663 | |
| 664 | // dynamically decreases the lines count depending on the removed lines |
| 665 | $pad = 0; |
| 666 | |
| 667 | $copy = []; |
| 668 | |
| 669 | foreach ($lines as $index => $line) |
| 670 | { |
| 671 | // register line number on array position 2 |
| 672 | $line[2] = $index + 1 + $pad; |
| 673 | $lines[$index] = $line; |
| 674 | |
| 675 | // increase line pad by -1 (only if deleted, 0 otherwise) |
| 676 | $pad += min(0, $line[1]); |
| 677 | } |
| 678 | |
| 679 | $diff = []; |
| 680 | |
| 681 | // preserve only the differences and a few lines before and after |
| 682 | foreach ($lines as $index => $line) |
| 683 | { |
| 684 | if ($line[1] === Fisharebest\Algorithm\MyersDiff::KEEP) |
| 685 | { |
| 686 | // same line, skip |
| 687 | continue; |
| 688 | } |
| 689 | |
| 690 | // difference detected, replicate N lines before and M lines after |
| 691 | for ($j = $index - $options['lines_before']; $j <= $index + $options['lines_after']; $j++) |
| 692 | { |
| 693 | // make sure we are not going out of bounds |
| 694 | if (isset($lines[$j])) |
| 695 | { |
| 696 | $diff[$j] = $lines[$j]; |
| 697 | } |
| 698 | } |
| 699 | } |
| 700 | |
| 701 | return $diff; |
| 702 | } |
| 703 | } |
| 704 |