Method parseEntry

src/parser/xref-parser.ts:397–428

* Parse a single xref entry. * Format: OOOOOOOOOO GGGGG T (10-digit offset, 5-digit gen, type)

()

   * Format: OOOOOOOOOO GGGGG T (10-digit offset, 5-digit gen, type)
   */
  private parseEntry(): XRefEntry {
    // Read 10-digit offset
    const offset = this.readFixedDigits(10);
    this.skipSpaces();

    // Read 5-digit generation
    const generation = this.readFixedDigits(5);
    this.skipSpaces();

    // Read type: 'n' or 'f'
    const typeByte = this.scanner.advance();

    // Skip to end of entry (EOL)
    this.skipToEOL();
    this.skipEOL();

    if (typeByte === CHAR_n) {
      return {
        type: "uncompressed",
        offset,
        generation,
      };
    } else if (typeByte === CHAR_f) {
      return {
        type: "free",
        nextFree: offset, // For free entries, offset field is next free object
        generation,
      };
    } else {
      throw new XRefParseError(`Invalid xref entry type: ${String.fromCharCode(typeByte)}`);
    }
  }

  /**
   * Read a fixed number of digits as an integer.