SVG → EMF direction + lossy matcher + fidelity tooling (v0.1.2) - #12
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Add the inverse SVG → EMF translation direction alongside the existing EMF → SVG renderer. Both directions are now functional and verified. SVG → EMF: - Nokogiri-backed SVG parser producing pure value-object domain model - OCP handler registry: new element type = new handler class - Handlers for rect, ellipse, circle, line, polyline, polygon, path, group (with transforms), text (basic), image (PNG), clip paths, defs - Public API: Emfsvg.from_svg, Emfsvg.from_svg_file, Emfsvg.to_emf - CLI: emfsvg to-emf INPUT.svg OUTPUT.emf - Coordinate scaler infrastructure (Identity default, Fixed available) Lossy SVG matcher (spec/support/svg_matcher.rb): - Float tolerance, ID canonicalisation, defs hoisting, transform flattening - Proves 208/208 (100%) EMF→SVG semantic equivalence vs libemf2svg at 0.1px tolerance (79 byte-identical, 129 cosmetically different) - Regression spec locks in the fidelity result Developer tooling: - scripts/run_emf_svg_compare.rb — fidelity scan vs libemf2svg - scripts/run_round_trip.rb — SVG→EMF→SVG round-trip scan - scripts/diff_fixture.rb — element-level diff diagnostics - scripts/diagnose_round_trip.rb — per-fixture failure reasons 205 specs, 0 failures. Rubocop clean on new code.
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Summary
Test plan
bundle exec rspec— 205 examples, 0 failuresbundle exec rubocop— clean on new codescripts/run_emf_svg_compare.rb 208 0.1— 208/208 pass at 0.1px tolerancespec/fidelity_regression_spec.rb— 10/10 pass vs libemf2svg