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<?php
declare(strict_types=1);
namespace PhpCfdi\RfcLinc\Util;
class FileReader implements ReaderInterface
{
/** @var resource|null */
private $file;
public function __destruct()
$this->close();
}
public function open(string $source)
$file = fopen($source, 'r');
if (! is_resource($file)) {
throw new \RuntimeException('Cannot create a reader from the file');
$this->file = $file;
public function readLine()
if (! is_resource($this->file)) {
throw new \RuntimeException('File is not open');
if (feof($this->file)) {
return false;
$line = fgets($this->file);
return (false !== $line) ? rtrim($line, PHP_EOL) : false;
public function close()
if (is_resource($this->file)) {
fclose($this->file);
$this->file = null;
public function isOpen(): bool
return is_resource($this->file);
phpcfdi /
rfclinc
