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docs(pdftract-342k4): add verification note for XFA detection

The detect_xfa function was already implemented in the codebase at the
time of bead assignment. This note documents the verification of the
existing implementation against the bead's acceptance criteria.

All 6 tests pass, covering all acceptance criteria:
- XFA stream presence → true
- XFA array packet form → true
- No XFA key → false
- XFA null → false
- No AcroForm → false
- XFA as indirect reference → true

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

2026-05-28 03:36:57 -04:00

2.4 KiB

Raw Blame History

pdftract-342k4: XFA Detection — Verification Note

Summary

XFA detection (detect_xfa) was already implemented in the codebase at the time of bead assignment. No implementation work was required.

Implementation Status

Function Location

File: crates/pdftract-core/src/forms/mod.rs
Lines: 66-72
Export: Public API in lib.rs line 73

Implementation

pub fn detect_xfa(acroform: &Option<PdfDict>) -> bool {
    acroform
        .as_ref()
        .and_then(|af| af.get("XFA"))
        .map(|xfa| !matches!(xfa, PdfObject::Null))
        .unwrap_or(false)
}

This matches the bead's specification exactly.

Acceptance Criteria Verification

All acceptance criteria PASS:

#	Criteria	Test	Status
1	PDF with AcroForm /XFA stream → true	`test_detect_xfa_xfa_stream`	✅ PASS
2	PDF with AcroForm /XFA [name, stream, ...] (packet form) → true	`test_detect_xfa_xfa_array_packet_form`	✅ PASS
3	PDF with AcroForm but no /XFA key → false	`test_detect_xfa_no_xfa_key`	✅ PASS
4	PDF with AcroForm /XFA null → false	`test_detect_xfa_xfa_null`	✅ PASS
5	PDF with no AcroForm → false	`test_detect_xfa_no_acroform`	✅ PASS

Additional coverage: test_detect_xfa_xfa_ref covers indirect reference handling (also returns true).

Test Run

$ cargo nextest run -p pdftract-core --lib detect_xfa
Starting 6 tests across 1 binary (2539 tests skipped)
    PASS [   0.004s] (1/6) pdftract-core forms::tests::test_detect_xfa_no_acroform
    PASS [   0.005s] (2/6) pdftract-core forms::tests::test_detect_xfa_no_xfa_key
    PASS [   0.005s] (3/6) pdftract-core forms::tests::test_detect_xfa_xfa_stream
    PASS [   0.005s] (4/6) pdftract-core forms::tests::test_detect_xfa_xfa_ref
    PASS [   0.006s] (5/6) pdftract-core forms::tests::test_detect_xfa_xfa_null
    PASS [   0.006s] (6/6) pdftract-core forms::tests::test_detect_xfa_xfa_array_packet_form
────────────
 Summary [   0.008s] 6 tests run: 6 passed, 2539 skipped

Files

Implementation: crates/pdftract-core/src/forms/mod.rs:66-72
Tests: crates/pdftract-core/src/forms/mod.rs:1437-1510
Export: crates/pdftract-core/src/lib.rs:73

Conclusion

Bead complete. The XFA detection function was already implemented with full test coverage. No code changes were required.

2.4 KiB Raw Blame History