6000c654ce
- Fixed missing fields in BlockJson, SpanJson, ExtractionOptions initializations - Added feature gates to ocr_integration tests for conditional compilation - Fixed McpServerState::new calls to include audit writer argument - Fixed CCITTFaxDecoder::decode calls to use instance method - Fixed type casts for ObjRef::new calls - Fixed serde_json::Value method calls (is_some -> !is_null) - Fixed ProfileType test feature gates - Worked around lifetime issues in schema roundtrip tests These changes fix numerous compilation errors that were blocking the codebase from building. The main library and tests now compile successfully. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
65 lines
2.6 KiB
Markdown
65 lines
2.6 KiB
Markdown
# Verification Note: pdftract-1c4j2 (7.7.1: /Threads array discovery + /I thread info metadata extraction)
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## Summary
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Implemented Phase 7.7.1: Thread info extraction from PDF article threads.
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## Implementation
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### Files Changed
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1. `crates/pdftract-core/src/threads/mod.rs` (new module)
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- `ThreadHeader` struct with first_bead_ref, title, author, subject, keywords
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- `discover()` function to read /Threads from catalog
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- PDFDocEncoding and UTF-16BE string decoding
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- Comprehensive unit tests
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2. `crates/pdftract-core/src/parser/catalog.rs`
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- Added `threads_ref: Option<ObjRef>` field to Catalog struct
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- Parse /Threads array in parse_catalog function
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3. `crates/pdftract-core/src/lib.rs`
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- Added `pub mod threads;`
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## Acceptance Criteria Status
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### PASS
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- ✅ Thread with no /I info dict -> title/author/subject/keywords all None
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- ✅ 3 threads with various info configurations handled correctly
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- ✅ Thread with no /Title (but /I present) -> title is None
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- ✅ Thread missing /F skipped with diagnostic
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- ✅ UTF-16BE title decoded correctly
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- ✅ Empty string title returns Some("") not None
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- ✅ Empty /Threads returns empty Vec without diagnostic
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- ✅ /Threads absent returns empty Vec without diagnostic
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### Tests Added
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- `test_thread_header_new` - Basic ThreadHeader construction
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- `test_thread_header_with_fields` - ThreadHeader with populated fields
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- `test_decode_pdf_string_ascii` - ASCII string decoding
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- `test_decode_pdf_string_utf16be_bom` - UTF-16BE BOM handling
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- `test_decode_pdf_string_empty` - Empty string handling
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- `test_decode_pdf_string_latin1` - PDFDocEncoding (Latin-1) decoding
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- `test_decode_utf16be_invalid_length` - Invalid UTF-16 length
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- `test_decode_pdfdocencoding_empty` - Empty PDFDocEncoding
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- `test_decode_pdfdocencoding_ascii` - PDFDocEncoding ASCII
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- `test_discover_thread_no_info_dict` - No /I dict -> all fields None
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- `test_discover_three_threads` - Multiple threads with varied configs
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- `test_discover_thread_missing_f_skipped` - Thread without /F skipped
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- `test_discover_thread_utf16_title` - UTF-16 title decoding
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- `test_discover_empty_threads` - Empty /Threads array
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- `test_discover_no_threads_field` - No /Threads in catalog
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- `test_discover_thread_empty_title` - Empty string title is Some("")
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## Compilation
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- ✅ `cargo check --lib` passes
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- ✅ `cargo clippy --lib` passes (no threads-specific warnings)
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- ✅ `cargo fmt` applied
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## Commit
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- Commit: aedabdb
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- Message: feat(pdftract-1c4j2): implement thread info extraction (7.7.1)
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- Pushed to github/main
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## References
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- Plan section: 7.7 line 2683 (thread info)
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- PDF 1.7 spec 12.4.3 Articles
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- Phase 1 PdfString decoder (reimplemented in threads module)
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