From 1b6a04ca5504955c571d1c97504fb45ea0befee4 Mon Sep 17 00:00:00 2001 From: Valentin Popov Date: Mon, 8 Jan 2024 01:21:28 +0400 Subject: Initial vendor packages Signed-off-by: Valentin Popov --- vendor/once_cell/examples/regex.rs | 49 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 vendor/once_cell/examples/regex.rs (limited to 'vendor/once_cell/examples/regex.rs') diff --git a/vendor/once_cell/examples/regex.rs b/vendor/once_cell/examples/regex.rs new file mode 100644 index 0000000..4c4c2ea --- /dev/null +++ b/vendor/once_cell/examples/regex.rs @@ -0,0 +1,49 @@ +use std::{str::FromStr, time::Instant}; + +use regex::Regex; + +macro_rules! regex { + ($re:literal $(,)?) => {{ + static RE: once_cell::sync::OnceCell = once_cell::sync::OnceCell::new(); + RE.get_or_init(|| regex::Regex::new($re).unwrap()) + }}; +} + +fn slow() { + 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""##; + + let mut total = 0; + for _ in 0..1000 { + let re = Regex::new( + r##"^(\S+) (\S+) (\S+) \[([^]]+)\] "([^"]*)" (\d+) (\d+) "([^"]*)" "([^"]*)"$"##, + ) + .unwrap(); + let size = usize::from_str(re.captures(s).unwrap().get(7).unwrap().as_str()).unwrap(); + total += size; + } + println!("{}", total); +} + +fn fast() { + 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""##; + + let mut total = 0; + for _ in 0..1000 { + let re: &Regex = regex!( + r##"^(\S+) (\S+) (\S+) \[([^]]+)\] "([^"]*)" (\d+) (\d+) "([^"]*)" "([^"]*)"$"##, + ); + let size = usize::from_str(re.captures(s).unwrap().get(7).unwrap().as_str()).unwrap(); + total += size; + } + println!("{}", total); +} + +fn main() { + let t = Instant::now(); + slow(); + println!("slow: {:?}", t.elapsed()); + + let t = Instant::now(); + fast(); + println!("fast: {:?}", t.elapsed()); +} -- cgit v1.2.3