// 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"(?m)^(?: +|\t+)\+ *(?:VAR|CONST) *\w+ *=.*(?:\R^(?> +|\t+)[^+\s].*)*").unwrap();
let string = " + VAR name1 = var indented by two spaces and the first nonspace character is '+'
+ VAR name2 = var indented by 2x2 spaces
+ VAR name3 = var indented by one \\t
+ VAR name4 = the next line with \"name5\" is not valid. missing the = character, should not be matched
+ VAR name5
+ CONST name6 = the type could be VAR or CONST
+ VAR multi1 = multiline value where the continuation lines
are indented (starts with two spaces or one tab) and NOT followed by the '+'
+ VAR multi1 = multiline value
indented
+ VAR multi1 = multiline value
indented ok too
+ VAR single = this is single line
+ because this line even if it is indented, the first nonspace character is '+'
+ VAR multi2 = multiline
could be
indented
any way
and any number of times
until the first non-indented line
the following should NOT match
+ VAR some = sould not be matched, because the line isn't indented
+ VAR some = sould not be matched, because the line isn't indented at least with TWO spaces or one tab
+ SOME name = value not matched because the SOME isn't VAR or CONST";
// 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/