Crate maskprompt_core 

Pure-Rust core for maskprompt. Detects common PII patterns plus caller-supplied keywords and replaces them via one of four strategies.

• Built-in rules. A small fixed set of regex patterns. Credit-card matches are validated through Luhn before redaction so unrelated 13–19 digit strings (order numbers, etc.) are not flagged.
• Custom keywords. An Aho-Corasick automaton over the union of all user-supplied needles, so a list with thousands of entries (customer names, internal project codes) still matches in linear time.
• Strategies. Tag, Hash, Fixed, Remove. The Hash strategy uses blake3 truncated to 8 hex chars to give stable cross-run redaction without recovering the source.

Match resolution: when two rules overlap, the one that started earlier wins; ties go to the longer match.

Structs

MaskMatch

One match found by Masker::mask.

MaskResult

Output of Masker::mask.

Masker

Compiled detector set. Build with Masker::builder.

MaskerBuilder

Builder for Masker.

Enums

BuiltinRule

Built-in detector identifiers.

MaskerError

All errors surfaced by maskprompt-core.

Strategy

How matches are replaced in the masked string.

Type Aliases

Result

Crate-wide result alias.