// include the latest version of the regex crate in your Cargo.toml
extern crate regex;
use regex::Regex;
fn main() {
let regex = Regex::new(r"(?i)(?:(?:CASE\s+(?:(?:WHEN\s+.+\s+THEN\s+.+)(?:\s+WHEN\s+.+THEN\s+.+)*)\s+ELSE\s+.+\s+END)(?:,\s*CASE\s+(?:(?:WHEN\s+.+THEN\s+.+)(?:\s+WHEN\s+.+\s+THEN\s+.+)*)\s+ELSE\s+.+\s+END)*)").unwrap();
let string = "CASE
WHEN <any_user_defined_condition> THEN <any_user_defined_value>
WHEN <any_user_defined_condition> THEN <any_user_defined_value>
WHEN <any_user_defined_condition> THEN <any_user_defined_value>
ELSE <any_user_defined_value>
END,
CASE
WHEN <any_user_defined_condition> THEN <any_user_defined_value>
WHEN <any_user_defined_condition> THEN <any_user_defined_value>
WHEN <any_user_defined_condition> THEN <any_user_defined_value>
WHEN <any_user_defined_condition> THEN <any_user_defined_value>
ELSE <any_user_defined_value>
END,
CASE
WHEN <any_user_defined_condition> THEN <any_user_defined_value>
WHEN <any_user_defined_condition> THEN <any_user_defined_value>
WHEN <any_user_defined_condition> THEN <any_user_defined_value>
ELSE <any_user_defined_value>
END";
// result will be an iterator over tuples containing the start and end indices for each match in the string
let result = regex.captures_iter(string);
for mat in result {
println!("{:?}", mat);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Rust, please visit: https://docs.rs/regex/latest/regex/