> */ private static array $readers = [ self::READER_XLSX => Reader\Xlsx::class, self::READER_XLS => Reader\Xls::class, self::READER_XML => Reader\Xml::class, self::READER_ODS => Reader\Ods::class, self::READER_SLK => Reader\Slk::class, self::READER_GNUMERIC => Reader\Gnumeric::class, self::READER_HTML => Reader\Html::class, self::READER_CSV => Reader\Csv::class, ]; /** * Create IReader. */ public static function createReader(string $readerType): IReader { /** @var class-string */ $className = $readerType; if (!in_array($readerType, self::$readers, true)) { if (!isset(self::$readers[$readerType])) { throw new Reader\Exception("No reader found for type $readerType"); } // Instantiate reader $className = self::$readers[$readerType]; } return new $className(); } /** * Loads Spreadsheet from file using automatic Reader\IReader resolution. * * @param string $filename The name of the spreadsheet file * @param int $flags the optional second parameter flags may be used to identify specific elements * that should be loaded, but which won't be loaded by default, using these values: * IReader::LOAD_WITH_CHARTS - Include any charts that are defined in the loaded file. * IReader::READ_DATA_ONLY - Read cell values only, not formatting or merge structure. * IReader::IGNORE_EMPTY_CELLS - Don't load empty cells into the model. * @param string[] $readers An array of Readers to use to identify the file type. By default, load() will try * all possible Readers until it finds a match; but this allows you to pass in a * list of Readers so it will only try the subset that you specify here. * Values in this list can be any of the constant values defined in the set * IOFactory::READER_*. */ public static function load(string $filename, int $flags = 0, ?array $readers = null): Spreadsheet { $reader = self::createReaderForFile($filename, $readers); return $reader->load($filename, $flags); } /** * Identify file type using automatic IReader resolution. * * @param string[] $readers */ public static function identify(string $filename, ?array $readers = null, bool $fullClassName = false): string { $reader = self::createReaderForFile($filename, $readers); $className = get_class($reader); if ($fullClassName) { return $className; } $classType = explode('\\', $className); return array_pop($classType); } /** * Create Reader\IReader for file using automatic IReader resolution. * * @param string[] $readers An array of Readers to use to identify the file type. By default, load() will try * all possible Readers until it finds a match; but this allows you to pass in a * list of Readers so it will only try the subset that you specify here. * Values in this list can be any of the constant values defined in the set * IOFactory::READER_*. */ public static function createReaderForFile(string $filename, ?array $readers = null): IReader { File::assertFile($filename); $testReaders = self::$readers; if ($readers !== null) { $readers = array_map('strtoupper', $readers); $testReaders = array_filter( self::$readers, fn (string $readerType): bool => in_array(strtoupper($readerType), $readers, true), ARRAY_FILTER_USE_KEY ); } // First, lucky guess by inspecting file extension $guessedReader = self::getReaderTypeFromExtension($filename); if (($guessedReader !== null) && array_key_exists($guessedReader, $testReaders)) { $reader = self::createReader($guessedReader); // Let's see if we are lucky if ($reader->canRead($filename)) { return $reader; } } // If we reach here then "lucky guess" didn't give any result // Try walking through all the options in self::$readers (or the selected subset) foreach ($testReaders as $readerType => $class) { // Ignore our original guess, we know that won't work if ($readerType !== $guessedReader) { $reader = self::createReader($readerType); if ($reader->canRead($filename)) { return $reader; } } } throw new Reader\Exception('Unable to identify a reader for this file'); } /** * Guess a reader type from the file extension, if any. */ private static function getReaderTypeFromExtension(string $filename): ?string { $pathinfo = pathinfo($filename); if (!isset($pathinfo['extension'])) { return null; } switch (strtolower($pathinfo['extension'])) { case 'xlsx': case 'xlsm': case 'xltx': case 'xltm': return 'Xlsx'; case 'xls': case 'xlt': return 'Xls'; case 'ods': case 'ots': return 'Ods'; case 'slk': return 'Slk'; case 'xml': return 'Xml'; case 'gnumeric': return 'Gnumeric'; case 'htm': case 'html': return 'Html'; case 'csv': return null; default: return null; } } /** * Register a reader with its type and class name. * * @param class-string $readerClass */ public static function registerReader(string $readerType, string $readerClass): void { // We want phpstan to validate caller, but still need this test if (!is_a($readerClass, IReader::class, true)) { //* @phpstan-ignore-line throw new Reader\Exception('Registered readers must implement ' . IReader::class); } self::$readers[$readerType] = $readerClass; } }