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

/
/
m

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)(?<cdrRecordType>d+)\,(?<globalCallID_callManagerId>d+)\,(?<globalCallID_callId>d+)\,(?<origLegCallIdentifier>d+)\,(?<dateTimeOrigination>d+)\,(?<origNodeId>d+)\,(?<origSpan>d+)\,(?<origIpAddr>d+)\,(?<callingPartyNumber>d+)\,(?<callingPartyUnicodeLoginUserID>d+)\,(?<origCause_location>d+)\,(?<origCause_value>d+)\,(?<origPrecedenceLevel>d+)\,(?<origMediaTransportAddress_IP>d+)\,(?<origMediaTransportAddress_Port>d+)\,(?<origMediaCap_payloadCapability>d+)\,(?<origMediaCap_maxFramesPerPacket>d+)\,(?<origMediaCap_g723BitRate>d+)\,(?<origVideoCap_Codec>d+)\,(?<origVideoCap_Bandwidth>d+)\,(?<origVideoCap_Resolution>d+)\,(?<origVideoTransportAddress_IP>d+)\,(?<origVideoTransportAddress_Port>d+)\,(?<origRSVPAudioStat>d+)\,(?<origRSVPVideoStat>d+)\,(?<destLegIdentifier>d+)\,(?<destNodeId>d+)\,(?<destSpan>d+)\,(?<destIpAddr>d+)\,(?<originalCalledPartyNumber>d+)\,(?<finalCalledPartyNumber>d+)\,(?<finalCallPartyUnicodeLoginUserID>d+)\,(?<destCause_location>d+)\,(?<destCause_value>d+)\,(?<destPrecedenceLevel>d+)\,(?<destMediaTransportAddress_IP>d+)\,(?<destMediaTransportAddress_Port>d+)\,(?<destMediaCap_payloadCapability>d+)\,(?<destMediaCap_maxFramesPerPacket>d+)\,(?<destMediaCap_g723BitRate>d+)\,(?<destVideoCap_Codec>d+)\,(?<destVideoCap_Bandwidth>d+)\,(?<destVideoCap_Resolution>d+)\,(?<destVideoTransportAddress_IP>d+)\,(?<destVideoTransportAddress_Port>d+)\,(?<destRSVPAudioStat>d+)\,(?<destRSVPVideoStat>d+)\,(?<dateTimeConnect>d+)\,(?<dateTimeDisconnect>d+)\,(?<lastRedirectDn>d+)\,(?<pkid>d+)\,(?<originalCallPartyNumberPartition>d+)\,(?<callingPartyNumberPartition>d+)\,(?<finalCalledPartyNumberPartition>d+)\,(?<lastRedirectDnPartition>d+)\,(?<duration>d+)\,(?<origDeviceName>d+)\,(?<destDeviceName>d+)\,(?<origCallTerminationOnBehalfOf>d+)\,(?<destCallTerminationOnBehalfOf>d+)\,(?<origCallPartyRedirectOnBehalfOf>d+)\,(?<lastRedirectRedirectOnBehalfOf>d+)\,(?<origCalledPartyRedirectReason>d+)\,(?<lastRedirectRedirectReason>d+)\,(?<destConversationId>d+)\,(?<globalCallId_ClusterID>d+)\,(?<joinOnBehalfOf>d+)\,(?<comment>d+)\,(?<authCodeDescription>d+)\,(?<authorizationLevel>d+)\,(?<clientMatterCode>d+)\,(?<origDTMFMethod>d+)\,(?<destDTMFMethod>d+)\,(?<callSecuredStatus>d+)\,(?<origConversationId>d+)\,(?<origMediaCap_Bandwidth>d+)\,(?<destMediaCap_Bandwidth>d+)\,(?<authorizationCodeValue>d+)\,(?<outpulsedCallingPartyNumber>d+)\,(?<outpulsedCalledPartyNumber>d+)\,(?<origIpv4v6Addr>d+)\,(?<destIpv4v6Addr>d+)\,(?<origVideoCap_Codec_Channel2>d+)\,(?<origVideoCap_Bandwidth_Channel2>d+)\,(?<origVideoCap_Resolution_Channel2>d+)\,(?<origVideoTransAdd_IP_Channel2>d+)\,(?<origVideoTransAdd_Port_Channel2>d+)\,(?<origVideoChannel_Role_Channel2>d+)\,(?<destVideoCap_Codec_Channel2>d+)\,(?<destVideoCap_Bandwidth_Channel2>d+)\,(?<destVideoCap_Resolution_Channel2>d+)\,(?<destVideoTransAdd_IP_Channel2>d+)\,(?<destVideoTransAdd_Port_Channel2>d+)\,(?<destVideoChannel_Role_Channel2>d+)\,(?<IncomingProtocolID>d+)\,(?<IncomingProtocolCallRef>d+)\,(?<OutgoingProtocolID>d+)\,(?<OutgoingProtocolCallRef>d+)\,(?<currentRoutingReason>d+)\,(?<origRoutingReason>d+)\,(?<lastRedirectingRoutingReason>d+)\,(?<huntPilotPartition>d+)\,(?<huntPilotDN>d+)\,(?<calledPartyPatternUsage>d+)\,(?<IncomingICID>d+)\,(?<IncomingOrigIOI>d+)\,(?<IncomingTermIOI>d+)\,(?<OutgoingICID>d+)\,(?<OutgoingOrigIOI>d+)\,(?<OutgoingTermIOI>d+)\,(?<outpulsedOrilCalledPartyNumber>d+)\,(?<outpulsedLastRedirectingNumber>d+)\,(?<wasCallQueued>d+)\,(?<totalWaitTimeInQueue>d+)\,(?<callingPartyNumber_uri>d+)\,(?<originalCalledPartyNumber_uri>d+)\,(?<finalCalledPartyNumber_uri>d+)\,(?<lastRedirectDn_uri>d+)\,(?<mobileCallingPartyNumber>d+)\,(?<finalMobileCalledPartyNumber>d+)\,(?<origMobileDeviceName>d+)\,(?<destMobileDeviceName>d+)\,(?<origMobileCallDuration>d+)\,(?<destMobileCallDuration>d+)\,(?<mobileCallType>d+)\,(?<originalCalledPartyPattern>d+)\,(?<finalCalledPartyPattern>d+)\,(?<lastRedirectingPartyPattern>d+)\,(?<huntPilotPattern>d+)\, ").unwrap(); let string = "\"cdrRecordType\",\"globalCallID_callManagerId\",\"globalCallID_callId\",\"origLegCallIdentifier\",\"dateTimeOrigination\",\"origNodeId\",\"origSpan\",\"origIpAddr\",\"callingPartyNumber\",\"callingPartyUnicodeLoginUserID\",\"origCause_location\",\"origCause_value\",\"origPrecedenceLevel\",\"origMediaTransportAddress_IP\",\"origMediaTransportAddress_Port\",\"origMediaCap_payloadCapability\",\"origMediaCap_maxFramesPerPacket\",\"origMediaCap_g723BitRate\",\"origVideoCap_Codec\",\"origVideoCap_Bandwidth\",\"origVideoCap_Resolution\",\"origVideoTransportAddress_IP\",\"origVideoTransportAddress_Port\",\"origRSVPAudioStat\",\"origRSVPVideoStat\",\"destLegIdentifier\",\"destNodeId\",\"destSpan\",\"destIpAddr\",\"originalCalledPartyNumber\",\"finalCalledPartyNumber\",\"finalCalledPartyUnicodeLoginUserID\",\"destCause_location\",\"destCause_value\",\"destPrecedenceLevel\",\"destMediaTransportAddress_IP\",\"destMediaTransportAddress_Port\",\"destMediaCap_payloadCapability\",\"destMediaCap_maxFramesPerPacket\",\"destMediaCap_g723BitRate\",\"destVideoCap_Codec\",\"destVideoCap_Bandwidth\",\"destVideoCap_Resolution\",\"destVideoTransportAddress_IP\",\"destVideoTransportAddress_Port\",\"destRSVPAudioStat\",\"destRSVPVideoStat\",\"dateTimeConnect\",\"dateTimeDisconnect\",\"lastRedirectDn\",\"pkid\",\"originalCalledPartyNumberPartition\",\"callingPartyNumberPartition\",\"finalCalledPartyNumberPartition\",\"lastRedirectDnPartition\",\"duration\",\"origDeviceName\",\"destDeviceName\",\"origCallTerminationOnBehalfOf\",\"destCallTerminationOnBehalfOf\",\"origCalledPartyRedirectOnBehalfOf\",\"lastRedirectRedirectOnBehalfOf\",\"origCalledPartyRedirectReason\",\"lastRedirectRedirectReason\",\"destConversationId\",\"globalCallId_ClusterID\",\"joinOnBehalfOf\",\"comment\",\"authCodeDescription\",\"authorizationLevel\",\"clientMatterCode\",\"origDTMFMethod\",\"destDTMFMethod\",\"callSecuredStatus\",\"origConversationId\",\"origMediaCap_Bandwidth\",\"destMediaCap_Bandwidth\",\"authorizationCodeValue\",\"outpulsedCallingPartyNumber\",\"outpulsedCalledPartyNumber\",\"origIpv4v6Addr\",\"destIpv4v6Addr\",\"origVideoCap_Codec_Channel2\",\"origVideoCap_Bandwidth_Channel2\",\"origVideoCap_Resolution_Channel2\",\"origVideoTransportAddress_IP_Channel2\",\"origVideoTransportAddress_Port_Channel2\",\"origVideoChannel_Role_Channel2\",\"destVideoCap_Codec_Channel2\",\"destVideoCap_Bandwidth_Channel2\",\"destVideoCap_Resolution_Channel2\",\"destVideoTransportAddress_IP_Channel2\",\"destVideoTransportAddress_Port_Channel2\",\"destVideoChannel_Role_Channel2\",\"IncomingProtocolID\",\"IncomingProtocolCallRef\",\"OutgoingProtocolID\",\"OutgoingProtocolCallRef\",\"currentRoutingReason\",\"origRoutingReason\",\"lastRedirectingRoutingReason\",\"huntPilotPartition\",\"huntPilotDN\",\"calledPartyPatternUsage\",\"IncomingICID\",\"IncomingOrigIOI\",\"IncomingTermIOI\",\"OutgoingICID\",\"OutgoingOrigIOI\",\"OutgoingTermIOI\",\"outpulsedOriginalCalledPartyNumber\",\"outpulsedLastRedirectingNumber\",\"wasCallQueued\",\"totalWaitTimeInQueue\",\"callingPartyNumber_uri\",\"originalCalledPartyNumber_uri\",\"finalCalledPartyNumber_uri\",\"lastRedirectDn_uri\",\"mobileCallingPartyNumber\",\"finalMobileCalledPartyNumber\",\"origMobileDeviceName\",\"destMobileDeviceName\",\"origMobileCallDuration\",\"destMobileCallDuration\",\"mobileCallType\",\"originalCalledPartyPattern\",\"finalCalledPartyPattern\",\"lastRedirectingPartyPattern\",\"huntPilotPattern\" INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,VARCHAR(50),VARCHAR(128),INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,VARCHAR(64),VARCHAR(64),INTEGER,INTEGER,INTEGER,INTEGER,VARCHAR(50),VARCHAR(50),VARCHAR(128),INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,VARCHAR(64),VARCHAR(64),INTEGER,INTEGER,VARCHAR(50),UNIQUEIDENTIFIER,VARCHAR(50),VARCHAR(50),VARCHAR(50),VARCHAR(50),INTEGER,VARCHAR(129),VARCHAR(129),INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,VARCHAR(50),INTEGER,VARCHAR(2048),VARCHAR(50),INTEGER,VARCHAR(32),INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,VARCHAR(32),VARCHAR(50),VARCHAR(50),VARCHAR(64),VARCHAR(64),INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,INTEGER,VARCHAR(32),INTEGER,VARCHAR(32),INTEGER,INTEGER,INTEGER,VARCHAR(50),VARCHAR(50),INTEGER,VARCHAR(50),VARCHAR(50),VARCHAR(50),VARCHAR(50),VARCHAR(50),VARCHAR(50),VARCHAR(50),VARCHAR(50),INTEGER,INTEGER,VARCHAR(255),VARCHAR(255),VARCHAR(255),VARCHAR(255),VARCHAR(50),VARCHAR(50),VARCHAR(129),VARCHAR(129),INTEGER,INTEGER,INTEGER,VARCHAR(50),VARCHAR(50),VARCHAR(50),VARCHAR(50) 1,2,66619,37842527,1521601412,2,37842527,768283402,\"8345\",\"\",0,0,4,561581578,20952,4,20,0,0,0,0,0,0,\"0\",\"0\",37842528,2,0,-1939586038,\"+552125403404\",\"+552125403404\",\"\",0,16,4,-1939586038,20580,4,20,0,0,0,0,0,0,\"0\",\"0\",1521601417,1521602306,\"+552125403404\",\"df8a12f7-6aa7-4ffb-b97f-eb331c392ec9\",\"GLOBAL_DN_E164_PT\",\"\",\"GLOBAL_DN_E164_PT\",\"GLOBAL_DN_E164_PT\",889,\"TRK-SME\",\"SEP10BD1800DEC5\",0,12,0,0,0,0,0,\"GloboUC\",0,\"\",\"\",0,\"\",3,3,0,0,64,64,\"\",\"\",\"\",\"10.14.121.33\",\"10.68.100.140\",0,0,0,0,0,0,0,0,0,0,0,0,1,\"6ECE5F800001000000175DAB2DCB130A\",0,\"\",0,0,0,\"\",\"\",2,\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",0,0,\"\",\"\",\"\",\"\",\"\",\"\",\"\",\"\",0,0,0,\"+552125403404\",\"+552125403404\",\"+552125403404\",\"\" "; // result will be a tuple containing the start and end indices for the first match in the string let result = regex.captures(string); let (start, end) = match result { Some((s, e)) => (s, e), None => { // ... } }; println!("{}", &string[start, end]); }

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/