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

/
/
gm

Test String

Code Generator

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)^.*<SRVCNAME>(?<SRVCNAME>[\/\w\?=]+)(<\/SRVCNAME>)?((<MESSAGETYPE>(?<MESSAGETYPE>.+?)<\/MESSAGETYPE>)?)?(<PROCESSORNAME>(?<PROCESSORNAME>.+)<\/PROCESSORNAME>)?(<CLNTIP>(?<CLNTIP>.+)<\/CLNTIP>)?(<TRANID>(?<TRANID>.+)<\/TRANID>)?(<TIMESTAMP>(?<TIMESTAMP>.+)<\/TIMESTAMP>)?(<TIMEELAPSED>(?<TIMEELAPSED>.+)<\/TIMEELAPSED>)?(<DOMAINNAME>(?<DOMAINNAME>.+)<\/DOMAINNAME>)?(<DEVICESERIALNUM>(?<DEVICESERIALNUM>.+)<\/DEVICESERIALNUM>)?((<INPUTMSG>)?(?<INPUTMSG>.*)(:?<\/INPUTMSG>.*))?(<\/CommonLoggingService>)?(?<line_breaker>(\<\?xml version="1\.0" encoding="UTF-8"\?>)?)?"#).unwrap(); let string = "<CommonLoggingService><SRVCNAME>/apij/mme/telematics/GetAlertHistory</SRVCNAME><MESSAGETYPE>response</MESSAGETYPE><PROCESSORNAME>EAI-ROUTER-MPG</PROCESSORNAME><CLNTIP>53.30.178.253:36682</CLNTIP><TRANID>477312335</TRANID><TIMESTAMP>2017-10-05T11:04:50-04:00</TIMESTAMP><TIMEELAPSED>360</TIMEELAPSED><DOMAINNAME>EAIProd</DOMAINNAME><DEVICESERIALNUM>7803112</DEVICESERIALNUM><INPUTMSG>{\"Data\":{\"Alerts\":[],\"SpeedAlerts\":[]},\"Response\":{\"ResponseCode\":\"1003\",\"ResponseDescription\":\"No Records Found\"}}</INPUTMSG></CommonLoggingService> <CommonLoggingService><SRVCNAME>/apij/mme/aftersales/service/services/vmilite/4JGDA0EB4FA472807</SRVCNAME><MESSAGETYPE>response</MESSAGETYPE><PROCESSORNAME>EAI-ROUTER-MPG</PROCESSORNAME><CLNTIP>53.30.178.250:36721</CLNTIP><TRANID>533680495</TRANID><TIMESTAMP>2017-10-05T11:05:12-04:00</TIMESTAMP><TIMEELAPSED>505</TIMEELAPSED><DOMAINNAME>EAIProd</DOMAINNAME><DEVICESERIALNUM>7803070</DEVICESERIALNUM><INPUTMSG>{\"vin\":\"4JGDA0EB4FA472807\",\"model\":\"ML250BTC\",\"year\":\"2015\",\"engineNo\":\"65196032390143\",\"transmission\":\"72290810204344\",\"prodDate\":\"08/29/2014\",\"sellingDealer\":\"14146\",\"primaryStatus\":\"NORMAL\",\"warSale\":{\"wsStrDate\":\"10/30/2014\"}}</INPUTMSG></CommonLoggingService>e><SRVCNAME>/apij/mme/telematics/QueryAccountDetails</SRVCNAME><MESSAGETYPE>response</MESSAGETYPE><PROCESSORNAME>EAI-ROUTER-MPG</PROCESSORNAME><CLNTIP>53.30.178.252:36695</CLNTIP><TRANID>222825457</TRANID><TIMESTAMP>2017-10-05T11:05:12-04:00</TIMESTAMP><TIMEELAPSED>804</TIMEELAPSED><DOMAINNAME>EAIProd</DOMAINNAME><DEVICESERIALNUM>7803112</DEVICESERIALNUM><INPUTMSG>{\"context\":{\"SourceName\":\"WEB\",\"TransactionId\":\"6K5U4YTE3023E1VDMW5Q8MU6ZT5S3R\",\"Timestamp\":\"2017-10-05T15:05:10.583Z\",\"Organization\":\"Mercedes-Benz\",\"Region\":\"US\",\"ApplicationName\":\"Android\"},\"Data\":{\"CustomerTier\":\"Customer\",\"ESAFlag\":\"M\",\"AccountName\":\"MBRACE FLEET\",\"Address\":{\"AddressDetails\":[{\"Address1\":\"2002 SUMMIT BLVD\",\"Address2\":\"\",\"City\":\"BROOKHAVEN\",\"StateProvince\":\"GA\",\"Country\":\"USA\",\"County\":\"GA\",\"ZipCode\":\"30319-1560\",\"AddressType\":\"Mailing Address\",\"PrimaryAddressFlag\":\"Y\"}]},\"Phone\":{\"PrimaryPhone\":{\"PhoneNumber\":\"4047800377\",\"CountryCode\":\"\"},\"CellPhone\":{\"PhoneNumber\":\"\",\"CountryCode\":\"\"},\"HomePhone\":{\"PhoneNumber\":\"\",\"CountryCode\":\"\"},\"WorkPhone\":{\"PhoneNumber\":\"\",\"CountryCode\":\"\"},\"Fax\":{\"PhoneNumber\":\"\",\"CountryCode\":\"\"},\"PrimaryPhoneType\":\"\"},\"EMail\":{},\"Contact\":{\"Name\":{\"FirstName\":\"MBRACE\",\"MiddleName\":\"\",\"LastName\":\"FLEET\",\"Prefix\":\"\",\"Suffix\":\"\",\"PersonUId\":\"1-5346007\"},\"Address\":{\"AddressDetails\":[{\"Address1\":\"2002 SUMMIT BLVD\",\"Address2\":\"\",\"City\":\"BROOKHAVEN\",\"StateProvince\":\"GA\",\"Country\":\"USA\",\"County\":\"\",\"ZipCode\":\"30319-1560\",\"AddressType\":\"Mailing Address\",\"PrimaryAddressFlag\":\"Y\",\"Longitude\":\"\",\"Latitude\":\"\"}]},\"Phone\":{\"PrimaryPhone\":{\"PhoneNumber\":\"4047800377\",\"CountryCode\":\"\"},\"CellPhone\":{\"PhoneNumber\":\"4047800377\",\"CountryCode\":\"\"},\"HomePhone\":{\"PhoneNumber\":\"\",\"CountryCode\":\"\"},\"WorkPhone\":{\"PhoneNumber\":\"4047800377\",\"CountryCode\":\"\"},\"Fax\":{\"PhoneNumber\":\"\",\"CountryCode\":\"\"},\"PrimaryPhoneType\":\"Mobile\"},\"Email\":{\"Email\":[{\"EmailAddress\":\"dele.nonyejohn@verizon.com\"}]},\"ContactType\":\"Primary\",\"PreferredContactMethod\":\"Email Address\",\"AlternateContactMethod\":\"Home Phone #\",\"ServiceMSGContactMethod\":\"Email\",\"ServiceMSGPhoneNumber\":\"Mobile Phone #\",\"ServiceMSGWirelessCarrier\":\"\",\"TimeZone\":\"\",\"OptionalFlag\":\"N\",\"PIN\":\"8744\",\"Comments\":\"\"},\"AccountNumber\":\"38184765\",\"AccountType\":\"Subscriber\",\"AccountStatus\":\"Active\",\"PreferredDealer\":\"\",\"AANFlag\":\"Y\",\"SalesDealer\":\"\",\"EmergencyFirstName\":\"\",\"EmergencyLastName\":\"\",\"EmergencyPhone\":\"\",\"Relationship\":\"\"},\"Response\":{\"ResponseCode\":\"00\",\"ResponseStatus\":\"SUCCESS\",\"ResponseDescription\":\"ACCOUNT INFORMATION FOUND.\"}}</INPUTMSG></CommonLoggingService><?xml version=\"1.0\" encoding=\"UTF-8\"?> <CommonLoggingService><SRVCNAME>/apij/mme/customer/services/finAccountInfo/?vin=WDC0J4KB1HF232726</SRVCNAME><MESSAGETYPE>response</MESSAGETYPE><PROCESSORNAME>EAI-ROUTER-MPG</PROCESSORNAME><CLNTIP>53.30.178.248:36776</CLNTIP><TRANID>533647919</TRANID><TIMESTAMP>2017-10-05T11:04:50-04:00</TIMESTAMP><TIMEELAPSED>220</TIMEELAPSED><DOMAINNAME>EAIProd</DOMAINNAME><DEVICESERIALNUM>7803070</DEVICESERIALNUM><INPUTMSG> <CommonLoggingService><SRVCNAME>/apij/mme/aftersales/service/services/vmilite/WDC0G4JB0HV006098</SRVCNAME><MESSAGETYPE>request</MESSAGETYPE><PROCESSORNAME>EAI-ROUTER-MPG</PROCESSORNAME><CLNTIP>53.30.178.251:33618</CLNTIP><TRANID>477313711</TRANID><TIMESTAMP>2017-10-05T11:04:50-04:00</TIMESTAMP><TIMEELAPSED>1</TIMEELAPSED><DOMAINNAME>EAIProd</DOMAINNAME><DEVICESERIALNUM>7803112</DEVICESERIALNUM><INPUTMSG/></CommonLoggingService>e><?xml version=\"1.0\" encoding=\"UTF-8\"?> <CommonLoggingService><SRVCNAME>/apij/mme/telematics/VehicleTra<?xml version=\"1.0\" encoding=\"UTF-8\"?> <CommonLoggingService><SRVCNAME>/apij/mme/telematics/VehicleTrackingStatus</SRVCNAME><MESSAGETYPE>response</MESSAGETYPE><PROCESSORNAME>EAI-ROUTER-MPG</PROCESSORNAME><CLNTIP>53.30.178.248:33990</CLNTIP><TRANID>221204193</TRANID><TIMESTAMP>2017-10-05T11:22:26-04:00</TIMESTAMP><TIMEELAPSED>377</TIMEELAPSED><DOMAINNAME>EAIProd</DOMAINNAME><DEVICESERIALNUM>7803070</DEVICESERIALNUM><INPUTMSG>{\"context\":{\"SourceName\":\"WEB\",\"TransactionId\":\"CGYWNXEGF9RDY7VDEJUYN8S2HESDAB\",\"Timestamp\":\"2017-10-05T15:22:24.772Z\",\"Organization\":\"Mercedes-Benz\",\"Region\":\"US\",\"ApplicationName\":\"Android\"},\"Data\":{\"trackingMode\":\"STOP\",\"trackingInterval\":0},\"Response\":{\"ResponseCode\":\"2000\",\"ResponseStatus\":\"Success\",\"ResponseDescription\":\"Successful Execution\"}}</INPUTMSG></CommonLoggingService>-ROUTER-MPG</PROCESSORNAME><CLNTIP>53.30.178.250:36775</CLNTIP><TRANID>223870097</TRANID><TIMESTAMP>2017-10-05T11:22:26-04:00</TIMESTAMP><TIMEELAPSED>995</TIMEELAPSED><DOMAINNAME>EAIProd</DOMAINNAME><DEVICESERIALNUM>7803112</DEVICESERIALNUM><INPUTMSG>{\"Response\":{\"Tracing\":{\"TraceID\":\"JA6RH30553DV1O4WL2U638O4C2MVF3\",\"TraceTimestamp\":\"2017-10-05T11:22:25.656Z\"},\"ResponseCode\":\"2000\",\"ResponseStatus\":\"Success\",\"ResponseDescription\":\"Successful Execution\"}}</INPUTMSG></CommonLoggingService><?xml version=\"1.0\" encoding=\"UTF-8\"?>"; // 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/