pdftract/crates
jedarden 1dfaf73aa4
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feat(pdftract-3g6ne): implement CMap codespace range parser
This commit adds the codespace range parser for CMap streams. The parser
extracts the begincodespacerange / endcodespacerange blocks that define
legal byte-width boundaries for character codes in a CMap.

## Implementation

- CodespaceRange: Single range with lo/hi bounds (stored as [u8; 4]) and width (1-4 bytes)
- CodespaceRanges: Collection with SmallVec<[CodespaceRange; 8]>
- CodespaceParser: PostScript-style tokenizer for begincodespacerange blocks

## Acceptance Criteria (all PASS)

- Parse <00> <7F> → 1 range, width=1 
- Parse <00> <7F> <8000> <FFFF> in one block → 2 ranges 
- Width inference: 2-char hex → width=1; 4-char hex → width=2 
- Case-insensitive hex (<C0> and <c0> equivalent) 
- Malformed range (width mismatch) → diagnostic + skipped 
- Empty CMap → empty ranges 
- JIS range <8140> <FEFE> → 2-byte CJK 
- 3-byte and 4-byte range support 

Also adds encrypted fixture provenance entries to PROVENANCE.md.

Co-Authored-By: Claude Code <noreply@anthropic.com>
2026-05-28 05:47:07 -04:00
..
pdftract-cer-diff docs(pdftract-aawrz): add LICENSE-MIT and LICENSE-APACHE files 2026-05-23 10:36:28 -04:00
pdftract-cli chore(pdftract-36glh): remove unused JpxDecoder import and add verification note 2026-05-28 05:23:13 -04:00
pdftract-core feat(pdftract-3g6ne): implement CMap codespace range parser 2026-05-28 05:47:07 -04:00
pdftract-libpdftract feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
pdftract-py fix(pdftract-63ka2): AES-128 test buffer allocation for PKCS#7 padding 2026-05-28 01:30:33 -04:00