regex

Regex Capture

This example shows how to create a Wasm UDF that will capture the first regex match encountered. A hash map is used to cache compiled regexes over multiple calls so that repeated regexes need not be recompiled every time.

Build

cargo wasi build --lib

Testing with Writ

writ --wit s2regex.wit target/wasm32-wasi/debug/s2regex.wasm capture "aabaaabbb" "(b{2,})"

"bbb"