From d528a69f3635a06362ff0d4e16e5c76d449b7e70 Mon Sep 17 00:00:00 2001 From: jedarden Date: Sun, 7 Jun 2026 15:55:54 -0400 Subject: [PATCH] docs(pdftract-4453y): add Phase 4.6 coordinator verification note Phase 4.6 Output Serialization (Plain Text Mode) coordinator is complete. All 5 children beads are closed and all acceptance criteria PASS. Acceptance criteria verified: - All children closed: pdftract-56txm, pdftract-2bpzs, pdftract-38p8h, pdftract-3bgxq, pdftract-529te - 10-page doc: 9 form-feed characters (test_serialize_document_text_ten_pages) - Header excluded by default; included with flag - Invisible Tr=3 excluded by default - Text round-trips with join Test results: - text.rs: 160 tests passed - options.rs: 41 tests passed Closes pdftract-4453y. --- notes/pdftract-4453y.md | 127 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 127 insertions(+) create mode 100644 notes/pdftract-4453y.md diff --git a/notes/pdftract-4453y.md b/notes/pdftract-4453y.md new file mode 100644 index 0000000..e06838d --- /dev/null +++ b/notes/pdftract-4453y.md @@ -0,0 +1,127 @@ +# Phase 4.6: Output Serialization Plain Text (Coordinator) - Verification Note + +## Summary + +Phase 4.6 coordinator bead `pdftract-4453y` is complete. All 5 child beads are closed and the implementation satisfies all acceptance criteria. + +## Children Closed + +All 5 dependencies of this coordinator are closed: + +1. **pdftract-56txm**: Phase 4.5: Reading Order (coordinator) - CLOSED +2. **pdftract-2bpzs**: OutputOptions struct + block-kind filter - CLOSED +3. **pdftract-38p8h**: Invisible text filter - CLOSED +4. **pdftract-3bgxq**: Document-level serializer (form feed) - CLOSED +5. **pdftract-529te**: Per-page block serializer - CLOSED + +## Acceptance Criteria Status + +| Criterion | Status | Evidence | +|-----------|--------|----------| +| All children closed | **PASS** | All 5 children verified closed via `bf show` | +| 10-page doc: 9 form-feed characters | **PASS** | `test_serialize_document_text_ten_pages` verifies exactly 9 form feeds | +| Header block excluded by default; included with flag | **PASS** | `test_serialize_page_text_header_excluded_by_default` and `test_serialize_page_text_header_included_when_flagged` | +| Invisible Tr=3 excluded by default | **PASS** | `test_should_include_span_invisible_mode_3_excluded_by_default` and related tests | +| Text round-trips with join | **PASS** | All serialization tests pass; proper `\n\n` and `\f` joining | + +## Implementation Files + +### Core Implementation +- `crates/pdftract-core/src/text.rs` - Per-page and document-level serialization +- `crates/pdftract-core/src/options.rs` - `OutputOptions` struct with filtering + +### CLI Integration +- `crates/pdftract-cli/src/main.rs` - CLI flags wired to options: + - `--include-headers` / `--include-footers` / `--include-headers-footers` + - `--include-invisible-text` + - `--include-watermarks` + +## Key Invariants Verified + +### Form Feed Invariant (INV) +- **N pages → N-1 form feeds**: `serialize_document_text` uses `join("\u{000C}")` which produces exactly N-1 form feeds +- No leading form feed +- No trailing form feed +- Empty page in middle: form feed before AND after + +Test evidence: +- `test_serialize_document_text_one_page`: 0 form feeds +- `test_serialize_document_text_two_pages`: 1 form feed +- `test_serialize_document_text_ten_pages`: 9 form feeds +- `test_serialize_document_text_empty_page_in_middle`: 2 form feeds with empty middle page + +### Block-Kind Filtering +- Header/Footer excluded by default (controlled via `OutputOptions`) +- Watermark excluded (no-op until Phase 7) +- Filtering at block level via `OutputOptions::include_block_kind` + +Test evidence: +- `test_serialize_page_text_header_excluded_by_default`: header not in output +- `test_serialize_page_text_header_included_when_flagged`: header included with flag +- `test_serialize_page_text_watermark_excluded_by_default`: watermark not in output + +### Invisible Text Filtering (SPAN-level) +- Filtering at SPAN level, not block level +- Tr=3 excluded by default (invisible) +- Tr=4-7 treated same as Tr=3 (invisible variants) +- Mixed-visibility blocks: visible emitted, invisible dropped +- All-invisible blocks: no spurious `\n\n` + +Test evidence: +- `test_should_include_span_invisible_mode_3_excluded_by_default`: Tr=3 filtered +- `test_should_include_span_invisible_mode_4_excluded_by_default` through `test_should_include_span_invisible_mode_7`: Tr=4-7 filtered +- `test_compute_block_text_from_spans_mixed_visibility`: mixed block emits only visible +- `test_serialize_page_text_all_invisible_block_omitted`: all-invisible produces empty (no `\n\n`) + +### Paragraph/Block Joining +- Blocks separated by `\n\n` +- Paragraph/Heading/Caption/Quote: space-joined lines +- List/Code: newline-joined lines +- Figure: empty string (no text content) + +Test evidence: +- `test_serialize_page_text_three_paragraphs`: "Foo\n\nBar\n\nBaz" +- `test_serialize_page_text_heading_and_paragraphs`: "Title\n\nP1\n\nP2" +- `test_serialize_page_text_list`: lines joined with `\n` +- `test_serialize_page_text_figure_emits_empty`: figure produces "" + +## Test Results + +### text.rs tests (160 passed) +``` +cargo test -p pdftract-core --lib text +test result: ok. 160 passed; 0 failed; 0 ignored +``` + +Key tests verifying acceptance criteria: +- `test_serialize_document_text_ten_pages`: 9 form feeds ✓ +- `test_serialize_page_text_header_excluded_by_default` ✓ +- `test_serialize_page_text_header_included_when_flagged` ✓ +- `test_should_include_span_invisible_mode_3_excluded_by_default` ✓ +- All rendering mode tests (Tr=0 through Tr=7) ✓ + +### options.rs tests (41 passed) +``` +cargo test -p pdftract-core --lib options +test result: ok. 41 passed; 0 failed; 0 ignored +``` + +Key tests: +- `test_output_options_default`: all exclude defaults ✓ +- `test_output_options_include_block_kind`: header/footer/watermark filtering ✓ +- `test_output_options_include_span`: invisible/hidden layer filtering ✓ + +## References + +- Plan section: Phase 4.6 Output Serialization (lines 1760-1776) +- Bead: pdftract-4453y +- Children: pdftract-56txm, pdftract-2bpzs, pdftract-38p8h, pdftract-3bgxq, pdftract-529te + +## Conclusion + +Phase 4.6 Output Serialization (Plain Text Mode) is fully implemented and verified. All acceptance criteria PASS. The implementation correctly: +1. Joins blocks in reading order with `\n\n` +2. Joins pages with form feed `\f` (exactly N-1 for N pages) +3. Excludes headers/footers by default with CLI flags to include +4. Excludes invisible text (Tr=3+) by default with CLI flag to include +5. Filters at SPAN level for invisible text, BLOCK level for kinds