jedarden
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77304153fc
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feat(pdftract-5sh): CIDToGIDMap resolver for CIDFontType2
Implements CIDToGIDMap resolver with Identity and stream forms:
- Identity: zero-allocation short-circuit (GID == CID)
- Stream: parses 2-byte big-endian GID values into Box<[u16]>
- Emits CIDTOGIDMAP_TRUNCATED diagnostic on odd-byte-count input
- Out-of-range CID returns GID 0 (notdef glyph) without panic
Acceptance criteria:
- Identity form: lookup of any CID returns same value as u16
- Stream form: synthetic 3-CID array decodes correctly [0, 5, 10]
- Out-of-range CID returns GID 0 with no panic
- Diagnostic CIDTOGIDMAP_TRUNCATED emitted on odd-byte-count input
Refs: pdftract-5sh, Phase 2.1 line 1315
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2026-05-23 15:23:27 -04:00 |
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