Current File : /var/www/projetos/stb.ind.br/wp-content/plugins/webp-express/lib/classes/CachePurge.php
<?php
namespace WebPExpress;
use \WebPExpress\Convert;
use \WebPExpress\FileHelper;
use \WebPExpress\DismissableMessages;
use \WebPExpress\Paths;
// TODO! Needs to be updated to work with the new "destination-structure" setting
class CachePurge
{
/**
* - Removes cache dir
* - Removes all files with ".webp" extension in upload dir (if set to mingled)
*/
public static function purge($config, $onlyPng)
{
DismissableMessages::dismissMessage('0.14.0/suggest-wipe-because-lossless');
$filter = [
'only-png' => $onlyPng,
'only-with-corresponding-original' => false
];
$numDeleted = 0;
$numFailed = 0;
list($numDeleted, $numFailed) = self::purgeWebPFilesInDir(Paths::getCacheDirAbs(), $filter, $config);
FileHelper::removeEmptySubFolders(Paths::getCacheDirAbs());
if ($config['destination-folder'] == 'mingled') {
list($d, $f) = self::purgeWebPFilesInDir(Paths::getUploadDirAbs(), $filter, $config);
$numDeleted += $d;
$numFailed += $f;
}
return [
'delete-count' => $numDeleted,
'fail-count' => $numFailed
];
//$successInRemovingCacheDir = FileHelper::rrmdir(Paths::getCacheDirAbs());
}
/**
* Purge webp files in a dir
* Warning: the "only-png" option only works for mingled mode.
* (when not mingled, you can simply delete the whole cache dir instead)
*
* @param $filter.
* only-png: If true, it will only be deleted if extension is .png.webp or a corresponding png exists.
*
* @return [num files deleted, num files failed to delete]
*/
private static function purgeWebPFilesInDir($dir, &$filter, &$config)
{
if (!@file_exists($dir) || !@is_dir($dir)) {
return [0, 0];
}
$numFilesDeleted = 0;
$numFilesFailedDeleting = 0;
$fileIterator = new \FilesystemIterator($dir);
while ($fileIterator->valid()) {
$filename = $fileIterator->getFilename();
if (($filename != ".") && ($filename != "..")) {
if (@is_dir($dir . "/" . $filename)) {
list($r1, $r2) = self::purgeWebPFilesInDir($dir . "/" . $filename, $filter, $config);
$numFilesDeleted += $r1;
$numFilesFailedDeleting += $r2;
} else {
// its a file
// Run through filters, which each may set "skipThis" to true
$skipThis = false;
// filter: It must be a webp
if (!$skipThis && !preg_match('#\.webp$#', $filename)) {
$skipThis = true;
}
// filter: only with corresponding original
$source = '';
if (!$skipThis && $filter['only-with-corresponding-original']) {
$source = Convert::findSource($dir . "/" . $filename, $config);
if ($source === false) {
$skipThis = true;
}
}
// filter: only png
if (!$skipThis && $filter['only-png']) {
// turn logic around - we skip deletion, unless we deem it a png
$skipThis = true;
// If extension is "png.webp", its a png
if (preg_match('#\.png\.webp$#', $filename)) {
// its a png
$skipThis = false;
} else {
if (preg_match('#\.jpe?g\.webp$#', $filename)) {
// It is a jpeg, no need to investigate further.
} else {
if (!$filter['only-with-corresponding-original']) {
$source = Convert::findSource($dir . "/" . $filename, $config);
}
if ($source === false) {
// We could not find corresponding source.
// Should we delete?
// No, I guess we need more evidence, so we skip
// In the future, we could detect mime
} else {
if (preg_match('#\.png$#', $source)) {
// its a png
$skipThis = false;
}
}
}
}
}
if (!$skipThis) {
if (@unlink($dir . "/" . $filename)) {
$numFilesDeleted++;
} else {
$numFilesFailedDeleting++;
}
}
}
}
$fileIterator->next();
}
return [$numFilesDeleted, $numFilesFailedDeleting];
}
public static function processAjaxPurgeCache()
{
if (!check_ajax_referer('webpexpress-ajax-purge-cache-nonce', 'nonce', false)) {
wp_send_json_error('The security nonce has expired. You need to reload the settings page (press F5) and try again)');
wp_die();
}
$onlyPng = (sanitize_text_field($_POST['only-png']) == 'true');
$config = Config::loadConfigAndFix();
$result = self::purge($config, $onlyPng);
echo json_encode($result, JSON_UNESCAPED_SLASHES | JSON_NUMERIC_CHECK | JSON_PRETTY_PRINT);
wp_die();
}
}
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