Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
gm

Test String

Code Generator

Language

Generated Code

// 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)^\"(?<timestart>\d{4}\/\d{2}\/\d{2}\s\d{2}\:\d{2}\:\d{2})?([\"|\,]*)?(?<recipient>[\w|\.|\-|_|\d]*@(?<domainimpacted>[\w|\.|\-|_|\d]*))?([\"|\,]*)?(?<subject>[\w|\s|\#|\@|\±|\§|\d|\!|\$|\%|\^|\,|\.|\(|\)|\[|\]|\{|\}|\:|\-|\&|\*|\'|\=|\+]*)?([\"|\,]*)?(?<action>\w*)?([\"|\,]*)?(?<sender>[\w|\.|\-|_|\d]*@(?<domainorigin>[\w|\.|\-|_|\d]*))?([\"|\,]*)?(?<account>[\w|\.|\-|_|\d|\,|\s]*)?([\"|\,]*)?(?<status>[\w|\.|\-|_|\d]*)?([\"|\,]*)?(?<object>[\w|\.|\-|_|\d]*)?([\"|\,]*)?(?<reason>[\w|\.|\-|_|\d]*)?([\"|\,]*)?(?<policy>[\w|\.|\-|_|\d]*)?([\"|\,]*)?(?<objecttype>[\w|\.|\-|_|\d|\s|\,]*)?([\"|\,]*)?(?<size>[\d]*)?([\"|\,]*)?(?<command>[\w|\.|\-|_|\d]*)?([\"|\,]*)?(?<objectname>[\w|\.|\-|_|\d]*)?([\"|\,]*)?(?<threatname>[\w|\.|\-|_|\d]*)?([\"|\,]*)?"#).unwrap(); let string = "\"2020/04/07 08:26:21\",\"shabbir.jafri@mcb.com.pk\",\"REQUIRED ORIGINAL LC # 0054ILS200@!±026, MCB to MCB.(NOVATEX)\",\"Accepted\",\"ppta.treasury@lottechem.pk\",\"None\",\"None\",\"None\",\"Clean\",\"None\",\"Portable Document Format\",\"131835\",\"None\",\"None\",\"None\" \"2020/04/05 15:20:02\",\"telecom.support@mcb.com.pk\",\"MCB14005 Lhr: Gulberg Gelria - ATM Down\",\"Accepted\",\"Abbas.Zaheer@ncr.com\",\"Zaheer, Abbas\",\"Whitelisted\",\"None\",\"Spam\",\"None\",\"JPEG Interchange Format,JPEG Interchange Format,JPEG Interchange Format,JPEG Interchange Format\",\"18837\",\"None\",\"None\",\"None\" \"2020/04/07 08:27:02\",\"narain.das@mcb.com.pk\",\"New Doc 2020-04-07 13.25.15 - Page 1\",\"Accepted\",\"naraindas24@gmail.com\",\"Narain Das\",\"None\",\"None\",\"Clean\",\"None\",\"Portable Document Format\",\"397990\",\"None\",\"None\",\"None\""; // 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/