99b41f04b6
Add is_hidden field to Glyph and MarkedContentFrame structs for tracking Optional Content Group (OCG) visibility. When a BDC operator with /OC tag references an OCG that is OFF by default, glyphs within that marked content block receive is_hidden=true. Changes: - Glyph struct: Add is_hidden: bool field (default false) - MarkedContentFrame struct: Add is_hidden: bool field (default false) - MarkedContentStack: Add is_hidden() method to check if any frame is hidden (OR semantics: outer hidden makes all descendants hidden) - MarkedContentFrame::bdc(): Add is_hidden parameter - MarkedContentStack::push_bdc(): Add is_hidden parameter - parse_bdc(): Add default_off_ocgs parameter to check OCG visibility - Extract /OCG reference from properties dict - Set is_hidden=true if OCG is in the OFF set - emit_glyph(): Add is_hidden parameter and pass to Glyph::new() - Add comprehensive tests for OCG functionality Per bead pdftract-1q19p acceptance criteria: - BDC /OC with OCG in default-OFF: glyphs have is_hidden=true - BDC /OC with OCG not in OFF: glyphs have is_hidden=false - Nested OCs with outer hidden: all inner glyphs hidden - No /OCProperties: no glyphs marked hidden Closes: pdftract-1q19p Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> |
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| .. | ||
| benches | ||
| build | ||
| examples | ||
| proptest-regressions/parser/lexer | ||
| src | ||
| tests | ||
| __test__.pdf | ||
| build.rs | ||
| Cargo.toml | ||
| pdftract-core.cdx.json | ||
| README.md | ||
pdftract-core
The core Rust library for PDF text extraction. This crate provides the parsing, layout analysis, font encoding recovery, and text extraction primitives used by the CLI (pdftract-cli) and Python bindings (pdftract-py).
Cargo.lock Policy
This workspace checks in Cargo.lock at the repository root. This is unconventional for library crates—the Cargo Book historically suggested that only binary crates should check in lockfiles, allowing library consumers to resolve their own dependency versions.
pdftract departs from this convention for release reproducibility:
-
SLSA Level 3 provenance requires that every milestone tag produces byte-identical artifacts across builds. Without a checked-in lockfile, two runs of
cargo buildon the same commit can resolve different transitive dependency versions, producing different binary hashes. -
Multi-output artifacts—this workspace produces Rust crates (
pdftract-core,pdftract-cli), Python wheels (pdftract-py), and Docker images. All must be built from the same dependency tree. -
Supply-chain security—the lockfile pins checksums for all transitive dependencies, enabling
cargo auditto detect yanked or compromised crates. -
Downstream consumers can still ignore the lockfile if needed. Cargo allows
cargo build --frozenwith a local lockfile override, or consumers can vendor the crate with their own dependency resolution.
The tradeoff—occasional merge conflicts when PRs update overlapping dependencies—is worth the guarantee of reproducible releases. See CONTRIBUTING.md for the lockfile-update workflow.
Modules
parser: PDF spec parsing (xref, trailer, object streams, indirect references)font: Font encoding recovery, glyph name lookup, fingerprintinglayout: Page layout analysis, region segmentation, reading orderextract: Text extraction with provenance (bounding boxes, confidence scores)ocr: Tesseract integration for raster pages
Usage
use pdftract_core::{extract_text, ExtractOptions};
let options = ExtractOptions::default();
let result = extract_text("document.pdf", &options)?;
println!("{}", result.text);