dict-lookup-key-suffix-parts-200120-pmb

Can be used to look up the most specific value for a multi-part filename extension or domain name.

API

This module exports one function:

dictLookupKeySuffixParts(dict, parts[, opts])

Returns false if no dict entry matches. If a matching entry is found, returns an object with these properties:

• key and val: The matching entry.
• partsUsed: An array of the parts that were used.
• nUsed: The number of parts used.
• nSkip: The number of parts skipped.

opts is an optional options object that supports these keys (all optional):

• glue: A string to put between parts. For lookups of domains or file name extensions, you'll probably want to set this to '.'.
• keyPrefix: A string to put in front of the glued-together key parts.
• keySuffix: A string to append to the glued-together key parts.

Usage

see test/usage.mjs.

Known issues

• Needs more/better tests and docs.

License

ISC