boolean-search

A single-header C++ Boolean search library for streaming applications.

Features

• UTF-8
• AND, OR, NOT, NEAR, ONEAR operators
• Wildcards
• Unicode normalization

Example

boolean_matcher::matcher m("apple AND orange");
if (m.match("I've got an apple and an orange")) {
	std::cout << "A match was found\n";
}

Future Plans

• Add maximum distance to NEAR and ONEAR (e.g. NEAR/1)
• Add support for wstrings
• Add support for pairs and tuples
• Add interface for metadata queries (e.g. .timestamp > "2024-10-01")
• Allow wildcards inside terms (e.g. w*d)
• Add comparison operators and arithmetics
• Add filtering
• Add better lexer and parser
• Embeddings / Document vectors

Dependencies

• utf8proc