Expand description
Regex matchers on character and byte streams.
Overview
The regex crate implements regular expression matching on strings and byte
arrays. However, in order to match the output of implementations of fmt::Debug
and fmt::Display, or by any code which writes to an instance of fmt::Write
or io::Write, it is necessary to first allocate a buffer, write to that
buffer, and then match the buffer against a regex.
In cases where it is not necessary to extract substrings, but only to test whether
or not output matches a regex, it is not strictly necessary to allocate and
write this output to a buffer. This crate provides a simple interface on top of
the lower-level regex-automata library that implements fmt::Write and
io::Write for regex patterns. This may be used to test whether streaming
output matches a pattern without buffering that output.
Users who need to extract substrings based on a pattern or who already have
buffered data should probably use the regex crate instead.
Syntax
This crate uses the same regex syntax of the regex-automata crate.