Function execute 

pub fn execute(
    opts: &DumpOptions,
    writer: &mut dyn Write,
) -> Result<(), IdbError>

Produce a hex dump of raw bytes from an InnoDB tablespace file.

Operates in two modes:

• Page mode (default): Opens the file as a tablespace, reads the page specified by -p (or page 0 if omitted), and prints a formatted hex dump with file-relative byte offsets. The dump length defaults to the full page size but can be shortened with --length.
• Offset mode (--offset): Reads bytes starting at an arbitrary absolute file position without page-size awareness. The default read length is 256 bytes. This is useful for inspecting raw structures that do not align to page boundaries (e.g., redo log headers, doublewrite buffer regions).

In either mode, --raw suppresses the formatted hex layout and writes the raw binary bytes directly to the writer, suitable for piping into xxd, hexdump, or other tools.