bloomtime/boolean-expression-js

Name: boolean-expression-js

Owner: Bloom

Description: A javascript/node.js library for compiling and evaluating boolean search terms, using ReParse.

Created: 2011-10-10 16:17:44.0

Updated: 2017-07-20 15:35:16.0

Pushed: 2012-07-11 22:54:15.0

Homepage: https://github.com/bloomtime/boolean-expression-js

Size: 112

Language: JavaScript

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README

Uses https://github.com/weaver/ReParse

Compiles and evaluates simple boolean search expressions, e.g.

parsed = new Expression("John AND Paul AND Ringo AND George");
rt.equal(parsed.test("John"), false);
rt.equal(parsed.test("Paul"), false);
rt.equal(parsed.test("Ringo"), false);
rt.equal(parsed.test("George"), false);
rt.equal(parsed.test("John Paul George Ringo"), true);
rt.equal(parsed.test("Ringo George Paul John"), true);

Supports parens for disambiguation. Supports AND, OR and NOT. Supports quotes for phrases. Case insensitive.

See tests for more examples.

TODO:

• allow domain names and other punctuation in terms
• flatten quoted terms
• more Googley searching (implied AND, negation with -, etc.)