To make regex-es verbose and clear to write/read, this crate is created. You can write a long regex with just a few operators and use already-adjusted settings for each segment of the pattern you create.
For instance, to create a regex like
rust
"/(?i)(?-i:leave me) behind/"
one would use this crate as follows:
rust
let result = EasyRegex::insensitive()
.group("leave me", &SENSITIVE_NON_CAPTURE) // second argument refers to (?i) flag and (?: ...) option which together makes a (?-i: ...) pattern.
.literal(" behind", &DEFAULT);
For a long one:
rust
"^(http|https|ftp):[/]{2}([a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,4})(:[0-9]+)?/?([a-zA-Z0-9\-\._\?,'/\\\+&%\$#=~]*)"
It would be:
```rust
let sectionone = EasyRegex::startofline()
.group(r"http|https|ftp", &DEFAULTGROUP)
.literal(":", &DEFAULT)
.list(
r"/",
&Settings {
exactly: Some(2),
..Default::default()
},
);
let sectiontwo = EasyRegex::newsection() .list(r"a-zA-Z0-9-.", &ONEORMORE) .literal(r".", &DEFAULT) .list( &UPPERLOWERCASE, &Settings { range: Some((Some(2), Some(4))), ..Default::default() }, ) .intogroup(&DEFAULT) // put all previous patterns of "sectiontwo" into a group as (previous patterns) .group(":[0-9]+", &OPTIONAL_GROUP) .literal(r"/", &OPTIONAL);
let sectionthree = EasyRegex::newsection() .literal(&ALPHANUMERIC, &DEFAULT) .literal(r"-.\?,'/\+&%\$#=~", &DEFAULT) .intolist(&NILORMORE) .intogroup(&DEFAULT);
let result = format!( "{}{}{}", sectionone.getregex().unwrap(), sectiontwo.getregex().unwrap(), sectionthree.getregex().unwrap() ); ```