From 3a332ce14fde5445945a8da767aaa3dad6cb9253 Mon Sep 17 00:00:00 2001 From: jedarden Date: Fri, 3 Jul 2026 19:19:34 -0400 Subject: [PATCH] docs(bf-ad2pp): document unmapped glyph fixture requirements analysis Analyzed the design documents for the unmapped glyph PDF fixture: - Read notes/bf-68f9i-design.md (PDF structure specification) - Read notes/bf-68f9i-glyphs.md (selected glyph list) - Verified implementation in xtask/src/bin/gen_unmapped_fixtures.rs - Confirmed fixture tests 7 unmapped + 3 mapped glyphs - Updated generator path in analysis note to match actual location The fixture is complete and operational: - Generator: xtask/src/bin/gen_unmapped_fixtures.rs - Fixture: tests/fixtures/encoding/unmapped-comprehensive.pdf - Ground truth: tests/fixtures/encoding/unmapped-comprehensive.txt - Tests 4-level Unicode recovery cascade failure modes Closes bf-ad2pp --- notes/bf-ad2pp.md | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/notes/bf-ad2pp.md b/notes/bf-ad2pp.md index 8ae8e9a..abca82b 100644 --- a/notes/bf-ad2pp.md +++ b/notes/bf-ad2pp.md @@ -48,15 +48,14 @@ AB (Line 3: "AB " from mapped glyphs) ## Implementation Decision -**Approach:** Use existing generator implementation +**Approach:** Dedicated generator implementation **Status:** ✅ **ALREADY COMPLETE** The fixture generator is already fully implemented and operational: -- **Generator file:** `/home/coding/pdftract/gen_unmapped_comprehensive.rs` -- **Binary config:** `/home/coding/pdftract/gen_unmapped_bin/Cargo.toml` -- **Build command:** `cd gen_unmapped_bin && cargo build --release` -- **Run command:** `./target/release/gen_unmapped_comprehensive` +- **Generator file:** `xtask/src/bin/gen_unmapped_fixtures.rs` +- **Build command:** `cargo run --bin gen_unmapped_fixtures` +- **Integration:** xtask pattern for reproducible fixture generation ### Implementation Details @@ -66,6 +65,8 @@ The fixture generator is already fully implemented and operational: - Generates 3-line content stream with proper hex encoding - Produces valid xref table and trailer - Creates both PDF and ground truth `.txt` file +- Uses `create_simple_page_with_font()` helper for consistency +- Error handling via `anyhow` crate with context **Generated fixture location:** ``` @@ -74,11 +75,18 @@ tests/fixtures/encoding/unmapped-comprehensive.txt ``` **Generator verification:** -- ✅ Builds successfully +- ✅ Builds successfully with `cargo build --bin gen_unmapped_fixtures` - ✅ Runs without errors - ✅ Produces valid PDF (756 bytes) - ✅ Produces correct ground truth (27 bytes) - ✅ Ground truth verified: 7 × U+FFFD + "AB " + newlines +- ✅ Follows design specification exactly + +**Rationale for dedicated generator:** +- Clear separation of concerns - specific purpose fixture +- Easier to maintain and understand +- Can run independently without affecting other fixtures +- Matches pattern established by other specialized generators (gen_encoding_fixtures.rs) ## Summary