jedarden 9b5fbc9b5e feat(pdftract-bf-2y2rp): implement lazy stream decoding for PDF extraction

- Add decode_page_content_streams() function for per-page lazy decode
- Update extract_page_from_dict() to support lazy stream decoding
- Modify extract_pdf() and extract_pdf_ndjson() to enable lazy decoding
- Fix borrow checker issue in LazyPageIter::next()

This ensures content streams are decoded lazily per page and dropped
immediately after processing, keeping peak RSS flat across page count.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

2026-05-23 12:30:26 -04:00

1.7 KiB

Raw Permalink Blame History

ADR-002: MPL-2.0 License Exception for option-ext

Status

Accepted

Context

option-ext (v0.2.0) is a transitive dependency brought in by the dirs crate (v5.0.1), which pdftract-cli uses for resolving platform-specific configuration directories (e.g., ~/.config/pdftract on Linux, ~/Library/Application Support on macOS).

Decision

MPL-2.0 is explicitly allowed for option-ext as a transitive dependency with no viable alternative.

Rationale

option-ext is a transitive dependency - not directly chosen by pdftract
The dirs crate is the de-facto standard for cross-platform config directory resolution
No viable alternative to dirs exists that avoids the option-ext transitive dependency
option-ext provides a single trivial function (Option::zip) - minimal code surface
The MPL-2.0 copyleft effect is limited to the option-ext crate itself

Alternatives Considered

Hardcode platform paths: Would break on niche platforms and future OS versions
Use a different dirs crate: No alternative exists; all similar crates pull in option-ext
Fork dirs without option-ext: Impractical maintenance burden for a single function

Consequences

pdftract can use dirs for cross-platform config directory resolution
The MPL-2.0 license does not affect downstream users of pdftract
This exception applies to option-ext as a transitive dependency only

Future Work

Monitor the dirs crate for future versions that may eliminate the option-ext dependency
Consider contributing a PR to dirs to remove the option-ext dependency if feasible

References

dirs repository: https://github.com/dirs-dev/dirs-rs
option-ext repository: https://github.com/kvsari/option-ext

1.7 KiB Raw Permalink Blame History