Improve the specification for reimplementation and porting

[sorairolake]

Currently, I think it is difficult to reimplement or port this format without referencing the reference implementation. So, I think it is difficult to implement the format with libraries licensed under the BSD-like licenses (e.g., libarchive or Go's Standard library).¹

This issue may be resolved by:

• Make the specification good enough to implement the format.
• Add a simplified implementation for an educational purpose to understand the format licensed under the BSD-like license.

gzip and lzip are licensed under the GPL, so they may be helpful. These formats seems to provide the sufficient specification to implement.²³ This method may be effective since these formats are implemented in libarchive and Go's Standard library.

Footnotes

1. https://www.gnu.org/licenses/gpl-faq.en.html#TranslateCode ↩

2. https://datatracker.ietf.org/doc/html/rfc1952 ↩

3. https://datatracker.ietf.org/doc/html/draft-diaz-lzip-09 ↩

[kspalaiologos]

#143 gets us towards this goal.

[kspalaiologos]

Moved to the tracking issue #145.