public function isEndOfFile()

in src/io/BufferedReader.php [288:318]

• 23 lines of code
• 7 McCabe index (conditional complexity)

  public function isEndOfFile(): bool {
    if ($this->eof) {
      return true;
    }
    if ($this->buffer !== '') {
      return false;
    }

    // attempt to make `while (!$handle->isEOF()) {` safe on a closed file
    // handle, e.g. STDIN; if we just return `$this->eof`, the caller loop
    // body must check for EPIPE and EBADF which is unexpected.
    try {
      // Calling the non-async (but still non-blocking) version as the async
      // version could wait for the other end to send data - which could lead
      // to both ends of a pipe/socket waiting on each other.
      $this->buffer = $this->handle->readImpl();
      if ($this->buffer === '') {
        $this->eof = true;
        return true;
      }
    } catch (OS\BlockingIOException $_EWOULDBLOCK) {
      return false;
    } catch (OS\ErrnoException $ex) {
      if ($ex->getErrno() === OS\Errno::EBADF) {
        $this->eof = true;
        return true;
      }
      // ignore; they'll hit it again when they try a real read
    }
    return false;
  }