iaPatchApplier::_processFile PHP Method

    protected function _processFile($entry)
    {
        $pathName = $entry['path'] . '/' . $entry['name'];
        switch (true) {
            // file/directory removal task
            case $entry['flags'] & self::FILE_ACTION_REMOVE:
                if (!file_exists($pathName)) {
                    $this->_logInfo('File/folder to be removed does already not exist: :file', self::LOG_SUCCESS, array('file' => $pathName));
                    break;
                }
                if (is_dir($pathName)) {
                    $this->_recursivelyRemoveDirectory($pathName);
                    clearstatcache();
                    is_dir($pathName) ? $this->_logInfo('Removal of directory :directory', self::LOG_SUCCESS, array('directory' => $pathName)) : $this->_logInfo('Unable to remove the directory: :directory', self::LOG_ERROR, array('directory' => $pathName));
                } else {
                    @unlink($pathName) ? $this->_logInfo('Removal of single file: :file', self::LOG_SUCCESS, array('file' => $pathName)) : $this->_logInfo('Unable to remove the file: :file', self::LOG_ERROR, array('file' => $pathName));
                }
                break;
                // default case - file create/rewrite task
            // default case - file create/rewrite task
            case $entry['flags'] & self::FILE_ACTION_CREATE:
                if (file_exists($pathName)) {
                    if (!$this->_forceMode) {
                        if ($entry['flags'] & self::FILE_FORMAT_TEXT) {
                            if (self::EMPTY_FILE_HASH != $entry['hash']) {
                                $content = @file_get_contents($pathName);
                                if (false === $content) {
                                    $this->_logInfo('Unable to get contents of the file to calculate the checksum: :file. Skipped', self::LOG_ERROR, array('file' => $pathName));
                                    return;
                                }
                                if (!$this->_checkTokenValidity($content, $entry['hash'])) {
                                    $this->_logInfo('The checksum is not equal: :file (seems modified). Skipped', self::LOG_ERROR, array('file' => $pathName));
                                    return;
                                }
                            }
                        }
                    }
                }
                $folder = dirname($pathName);
                if (!is_dir($folder)) {
                    $umask = umask(0);
                    @mkdir($folder, self::PERMISSIONS_FULL_ACCESS, true);
                    umask($umask);
                    // because of mkdir with recursive param set to true does always return false
                    if (!is_dir($folder)) {
                        $this->_logInfo('Could not create a directory :directory to write the file: :file', self::LOG_ALERT, array('directory' => $folder, 'file' => $pathName));
                    }
                }
                is_writable($folder) ? $this->_writeFile($pathName, $entry['contents'], $entry['flags'] & self::FILE_FORMAT_BINARY) : $this->_logInfo('File is non-writable: :file. Skipped', self::LOG_ERROR, array('file' => $pathName));
        }
    }