50 lines
1.6 KiB
Rust
50 lines
1.6 KiB
Rust
use std::{str::FromStr, time::Instant};
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use regex::Regex;
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macro_rules! regex {
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($re:literal $(,)?) => {{
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static RE: once_cell::sync::OnceCell<regex::Regex> = once_cell::sync::OnceCell::new();
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RE.get_or_init(|| regex::Regex::new($re).unwrap())
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}};
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}
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fn slow() {
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let s = r##"13.28.24.13 - - [10/Mar/2016:19:29:25 +0100] "GET /etc/lib/pChart2/examples/index.php?Action=View&Script=../../../../cnf/db.php HTTP/1.1" 404 151 "-" "HTTP_Request2/2.2.1 (http://pear.php.net/package/http_request2) PHP/5.3.16""##;
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let mut total = 0;
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for _ in 0..1000 {
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let re = Regex::new(
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r##"^(\S+) (\S+) (\S+) \[([^]]+)\] "([^"]*)" (\d+) (\d+) "([^"]*)" "([^"]*)"$"##,
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)
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.unwrap();
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let size = usize::from_str(re.captures(s).unwrap().get(7).unwrap().as_str()).unwrap();
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total += size;
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}
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println!("{}", total);
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}
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fn fast() {
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let s = r##"13.28.24.13 - - [10/Mar/2016:19:29:25 +0100] "GET /etc/lib/pChart2/examples/index.php?Action=View&Script=../../../../cnf/db.php HTTP/1.1" 404 151 "-" "HTTP_Request2/2.2.1 (http://pear.php.net/package/http_request2) PHP/5.3.16""##;
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let mut total = 0;
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for _ in 0..1000 {
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let re: &Regex = regex!(
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r##"^(\S+) (\S+) (\S+) \[([^]]+)\] "([^"]*)" (\d+) (\d+) "([^"]*)" "([^"]*)"$"##,
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);
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let size = usize::from_str(re.captures(s).unwrap().get(7).unwrap().as_str()).unwrap();
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total += size;
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}
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println!("{}", total);
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}
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fn main() {
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let t = Instant::now();
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slow();
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println!("slow: {:?}", t.elapsed());
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let t = Instant::now();
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fast();
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println!("fast: {:?}", t.elapsed());
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}
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