Created
May 6, 2018 20:56
-
-
Save barzamin/2739273b0095fb9b4ade365fe6cc50c5 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#![allow(dead_code)] | |
use regex::{Regex, RegexBuilder}; | |
static CTRL_CHARS: &str = r"\x00-\x1F\x7F"; | |
static INVALID_CHARS: &str = "\u{FFFE}\u{FEFF}\u{FFFF}\u{202A}-\u{202E}"; | |
static UNICODE_SPACES: &str = "\u{09}-\u{0D}\u{20}\u{85}\u{A0}\u{1680}\u{180E}\u{2000}-\u{200A}\u{2028}\u{2029}\u{202F}\u{205F}\u{3000}"; | |
static LATIN_ACCENTS: &str = "\u{00C0}-\u{00D6}\u{00D8}-\u{00F6}\u{00F8}-\u{00FF}\u{0100}-\u{024F}\u{0253}-\u{0254}\ | |
\u{0256}-\u{0257}\u{0259}\u{025b}\u{0263}\u{0268}\u{026F}\u{0272}\u{0289}\u{02BB}\u{1E00}-\u{1EFF}"; | |
static PUNCTUATION: &str = r##"-_!"#$%&'()*+,./:;<=>?@\[\]^`{|}~"##; | |
static PUNCTUATION_NO_HYPHEN: &str = r##"_!"#$%&'()*+,./:;<=>?@\[\]^`{|}~"##; | |
static PUNCTUATION_NO_HYPHEN_UNDERSCORE: &str = r##"!"#$%&'()*+,./:;<=>?@\[\]^`{|}~"##; | |
static VALID_QUERY_STRING: &str = | |
r##"(?:[-a-zA-Z0-9!?*'\(\);:&=+$/%#\[\]_\.,~|@]*[a-zA-Z0-9_&=#/])"##; | |
lazy_static! { | |
/// Matches characters which can validly start or end a domain. | |
static ref VALID_DOMAIN_EXTREMA_CHARS: String = format!( | |
"[^{punctuation}{ctrl}{invalid}{space}]", | |
punctuation = PUNCTUATION, | |
ctrl = CTRL_CHARS, | |
invalid = INVALID_CHARS, | |
space = UNICODE_SPACES | |
); | |
/// Matches characters which are valid in the middle of a domain. | |
static ref VALID_DOMAIN_MIDDLE_CHARS: String = format!( | |
"[^{punctuation}{ctrl}{invalid}{space}]", | |
punctuation = PUNCTUATION_NO_HYPHEN, | |
ctrl = CTRL_CHARS, | |
invalid = INVALID_CHARS, | |
space = UNICODE_SPACES | |
); | |
static ref VALID_DOMAIN_PART: String = format!( | |
"(?:{extremum}(?:{middle}*{extremum})?)", | |
extremum=*VALID_DOMAIN_EXTREMA_CHARS, | |
middle=*VALID_DOMAIN_MIDDLE_CHARS, | |
); | |
static ref SYNTACTICALLY_VALID_TLD: String = format!( | |
"{}{{2,}}", *VALID_DOMAIN_EXTREMA_CHARS); | |
static ref VALID_DOMAIN: String = format!(r"(?:(?:{part}\.)*{part}\.{tld})", | |
part=*VALID_DOMAIN_PART, tld=*SYNTACTICALLY_VALID_TLD); | |
static ref VALID_PATH_CHARS: String = format!(r"[^{space}\(\)\?]", space=UNICODE_SPACES); | |
static ref VALID_PATH_ENDING_CHARS: String = format!( | |
r"[^{space}\(\)\?!\*';:=,\.\$%\[\]~&\|@]|(?:{balanced_parens})", | |
space=UNICODE_SPACES, | |
balanced_parens=*VALID_PATH_BALANCED_PARENS, | |
); | |
static ref VALID_PATH_BALANCED_PARENS: String = format!(concat!( | |
r"\(", | |
"(?:", | |
"{path_char}+", | |
"|", | |
r"(?:\({path_char}+\))", | |
")", | |
r"\)"), | |
path_char=*VALID_PATH_CHARS, | |
); | |
static ref VALID_PATH_PART: String = format!(concat!( | |
"(?:", | |
"(?:{path_char}*(?:{balanced_parens}{path_char}*)*{path_ending_char})", | |
"|", | |
"(?:{path_char}+/)", | |
")"), | |
path_char=*VALID_PATH_CHARS, | |
path_ending_char=*VALID_PATH_ENDING_CHARS, | |
balanced_parens=*VALID_PATH_BALANCED_PARENS | |
); | |
static ref VALID_URL: String = format!(concat!( | |
"(", // $1 - whole match | |
"(https?://)", // $2 - scheme | |
"({domain})", // $3 - domain | |
"(?::([0-9]+))?", // $4 - port | |
"(/{path}*)?", // $5 - path | |
r"(\?{query})?", // $6 - query | |
")"), | |
domain = *VALID_DOMAIN, | |
path = *VALID_PATH_PART, | |
query = VALID_QUERY_STRING | |
); | |
pub static ref RE_URL: Regex = RegexBuilder::new(&*VALID_URL) | |
.case_insensitive(true) | |
.build() | |
.unwrap(); | |
} | |
#[cfg(test)] | |
mod test { | |
use super::*; | |
#[test] | |
fn parses_domain() { | |
let re = Regex::new(&format!("^{}$", *VALID_DOMAIN)).unwrap(); | |
assert!(re.is_match("activitypub.rocks")); | |
assert!(re.is_match("rustodon.glitch.social")); | |
assert!(!re.is_match(".github.com")); | |
assert!(!re.is_match("github.com.")); | |
assert!(!re.is_match("github..com")); | |
assert!(!re.is_match("github")); | |
} | |
#[test] | |
fn parses_domain_part() { | |
let re = Regex::new(&format!("^{}$", *VALID_DOMAIN_PART)).unwrap(); | |
assert!(re.is_match("github")); | |
assert!(re.is_match("destroy-capitalism")); | |
assert!(!re.is_match("-oops")); | |
assert!(!re.is_match("oops-")); | |
} | |
#[test] | |
fn parses_tld() { | |
let re = Regex::new(&format!("^{}$", &*SYNTACTICALLY_VALID_TLD)).unwrap(); | |
assert!(re.is_match("com")); | |
assert!(re.is_match("net")); | |
assert!(re.is_match("fr")); | |
assert!(re.is_match("space")); | |
assert!(re.is_match("한국")); | |
assert!(!re.is_match("x")); | |
assert!(!re.is_match("한")); | |
assert!(!re.is_match("-")); | |
assert!(!re.is_match("_")); | |
} | |
#[test] | |
fn re_url_builds() { | |
use lazy_static::initialize; | |
initialize(&RE_URL); | |
} | |
#[test] | |
fn fsjs() { | |
println!("{}", (*VALID_URL).escape_default()); | |
assert!(false); | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment