Reggy

Friendly regular expressions for text analytics. Typical regex features are removed/adjusted to make natural language queries easier and to strictly limit memory/runtime. Able to match streaming text.

API Docs

Pattern Language

Reggy is case-insensitive by default. Spaces match any amount of whitespace (i.e. \s+). All the reserved characters mentioned below (\, (, ), ?, |, and !) may be escaped with a backslash for a literal match. Patterns are surrounded by implicit word boundaries (i.e. \b).

Examples

Make a letter optional with ?

dogs? matches dog and dogs

Create two or more options with |

dog|cat matches dog and cat

Perform operations on groups of characters with (...)

the qualit(y|ies) required matches the quality required and the qualities required

the only( one)? around matches the only around and the only one around

Create a case-sensitive group with (!...)

United States of America|(!USA) matches USA, not usa

Match digits with \d

\d.\d\d matches 3.14