Method parseAt

src/parser/xref-parser.ts:93–110

* Parse xref at given byte offset. * Auto-detects table vs stream format.

(offset: number)

   * Auto-detects table vs stream format.
   */
  parseAt(offset: number): XRefData {
    this.scanner.moveTo(offset);

    // Peek to detect format
    const firstByte = this.scanner.peek();

    // 'x' = 0x78 starts "xref"
    if (firstByte === 0x78) {
      return this.parseTable();
    }

    // Digit starts "N M obj" (stream format)
    if (firstByte >= DIGIT_0 && firstByte <= DIGIT_9) {
      return this.parseStream();
    }

    throw new XRefParseError(`Unknown xref format at offset ${offset}`);
  }

  /**
   * Detect the XRef format at a given offset without fully parsing.