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mtlcl410andClaude Opus 5.5 0647a4e724 fix(render): an unreadable CMap token counts once against the skip limit, with unit tests (hayro-cmap patch 3, hayro-postscript patch 2)

- `Scanner::parse_object_or_skip` skips whitespace and comments before
  taking its start offset, so a token after a space fails once, not
  twice, whoever calls it. (The CMap scan already skipped whitespace in
  `at_end`, so CMap results do not change.)
- Unit tests in hayro-postscript (stepping over a token, a failed read
  not read again, never past the end of the data) and in hayro-cmap
  (bfchar and bfrange after a stray `>` or a spaced name, the 1,024-token
  limit at its boundary, a CMap of unreadable tokens only failing).
- The render test checks a bfrange entry after the bad token, a run past
  the limit before the mappings, and a CMap of unreadable tokens only;
  its wall-clock assertion is gone, the no-re-read property is the
  deterministic hayro-postscript test.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-11-07 06:52:15 +08:00

examples

fix(render): vendor hayro-postscript so a run of << in a CMap can't overflow the stack (#4363 )

2026-10-24 09:38:10 -04:00

src

fix(render): an unreadable CMap token counts once against the skip limit, with unit tests (hayro-cmap patch 3, hayro-postscript patch 2)

2026-11-07 06:52:15 +08:00

Cargo.lock

fix(render): vendor hayro-postscript so a run of << in a CMap can't overflow the stack (#4363 )

2026-10-24 09:38:10 -04:00

Cargo.toml

fix(render): vendor hayro-postscript so a run of << in a CMap can't overflow the stack (#4363 )

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Cargo.toml.orig

fix(render): vendor hayro-postscript so a run of << in a CMap can't overflow the stack (#4363 )

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LICENSE-APACHE

fix(render): vendor hayro-postscript so a run of << in a CMap can't overflow the stack (#4363 )

2026-10-24 09:38:10 -04:00

LICENSE-MIT

fix(render): vendor hayro-postscript so a run of << in a CMap can't overflow the stack (#4363 )

2026-10-24 09:38:10 -04:00

README.md

fix(render): vendor hayro-postscript so a run of << in a CMap can't overflow the stack (#4363 )

2026-10-24 09:38:10 -04:00

README.md

hayro-postscript

A lightweight PostScript scanner.

This crate provides a scanner for tokenizing PostScript programs into typed objects. It currently only implements a very small subset of the PostScript language, with the main goal of being enough to parse CMAP files, but the scope might be expanded upon in the future.

The supported types include integers and real numbers, name objects, strings and arrays. Unsupported is anything else, including dictionaries, procedures, etc. An error will be returned in case any of these is encountered.

Safety

This crate forbids unsafe code via a crate-level attribute.

License

Licensed under either of

Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.