How to set define precedence of one match above another in regular expression












1















I have logfiles from which i need to extract the key and value pairs for each logged line using the following format.



[2018-11-19T13:04:33.031+01:00]  Bedrijfsdocument="BD-023005 Document" Richting="Uitgaand" Status="verzonden"; Zaaknummer="2323343333"; MessageID="ef5c6e9e-849e-4d80-af86-92fc127e7178"; ConversationID="5571c03e-62a8-4fce-81ff-9fe31b7b276c"; RefToMessageId="34333139343034303934303135343731"; MMDBestand="2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd"; Bericht="<?xml version="1.0" encoding="UTF-8" standalone="yes"?><ns2:DocumentBericht BDVersie="2.1" BDNaam="TA-022305" xmlns:ns2="com.my.test/berichten/document/2" xmlns="com.my.test/header/1"><Header><ID>58b5708f-4115-462c-93f3-5fb5134c9e25</ID><VerzendendePartijen><VerzendendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000034000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></VerzendendePartij></VerzendendePartijen><OntvangendePartijen><OntvangendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000076000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></OntvangendePartij></OntvangendePartijen><Datum>2018-11-19</Datum><Tijd>13:04:32.952+01:00</Tijd><SchemaVersieID>1.1</SchemaVersieID></Header><ns2:Zaak><ns2:Identificatie>2100008418</ns2:Identificatie></ns2:Zaak><ns2:DocumentAggregatieniveaus><ns2:DocumentAggregatieniveau><ns2:Classificatie><ns2:DocumentSoort>098</ns2:DocumentSoort></ns2:Classificatie><ns2:Identificatiekenmerk>DOC006256</ns2:Identificatiekenmerk><ns2:Foldernaam>02 - Correspondentie</ns2:Foldernaam><ns2:Revisie>1</ns2:Revisie><ns2:IndicatieGewijzigdeMetadata>0</ns2:IndicatieGewijzigdeMetadata><ns2:Naam>02 - Toezenden stukken rm</ns2:Naam><ns2:Bijlage><ns2:MimeContent><ns2:MimeContentType>application/pdf</ns2:MimeContentType><ns2:MimeContentId>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_2.pdf@my.com</ns2:MimeContentId></ns2:MimeContent></ns2:Bijlage></ns2:DocumentAggregatieniveau></ns2:DocumentAggregatieniveaus></ns2:DocumentBericht>"; Omvang="3512"


This is currently parsed using the following regular expression to extract the name and value pairs.



(?:^[.*])?(?:[s]+)(?<key>[^=]+)(?:={1}"{1})(?<value>[^"]+)(?:["]{1})


It works fine, except for the key 'Bericht' which contains xml and also non-escaped quote's. The content of this key is a fact for me, so should handle this in my code to parse the logline. So i am looking for a way to define the end of a parameter value which is " or >" where >" should take precedence over ".



I use the following test code



public class test {

public static void main(String args) {

Pattern keyValuePairsPattern = Pattern.compile("(?:^\[.*\])?(?:[\s]+)(?<key>[^=]+)(?:={1}"{1})(?<value>[^"]+)(?:["]{1})");
String logentry = "[2018-11-19T13:04:33.031+01:00] Bedrijfsdocument="BD-023005 Document" Richting="Uitgaand" Status="verzonden"; Zaaknummer="2323343333"; MessageID="ef5c6e9e-849e-4d80-af86-92fc127e7178"; ConversationID="5571c03e-62a8-4fce-81ff-9fe31b7b276c"; RefToMessageId="34333139343034303934303135343731"; MMDBestand="2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd"; Bericht="<?xml version="1.0" encoding="UTF-8" standalone="yes"?><ns2:DocumentBericht BDVersie="2.1" BDNaam="TA-022305" xmlns:ns2="com.my.test/berichten/document/2" xmlns="com.my.test/header/1"><Header><ID>58b5708f-4115-462c-93f3-5fb5134c9e25</ID><VerzendendePartijen><VerzendendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000034000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></VerzendendePartij></VerzendendePartijen><OntvangendePartijen><OntvangendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000076000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></OntvangendePartij></OntvangendePartijen><Datum>2018-11-19</Datum><Tijd>13:04:32.952+01:00</Tijd><SchemaVersieID>1.1</SchemaVersieID></Header><ns2:Zaak><ns2:Identificatie>2100008418</ns2:Identificatie></ns2:Zaak><ns2:DocumentAggregatieniveaus><ns2:DocumentAggregatieniveau><ns2:Classificatie><ns2:DocumentSoort>098</ns2:DocumentSoort></ns2:Classificatie><ns2:Identificatiekenmerk>DOC006256</ns2:Identificatiekenmerk><ns2:Foldernaam>02 - Correspondentie</ns2:Foldernaam><ns2:Revisie>1</ns2:Revisie><ns2:IndicatieGewijzigdeMetadata>0</ns2:IndicatieGewijzigdeMetadata><ns2:Naam>02 - Toezenden stukken rm</ns2:Naam><ns2:Bijlage><ns2:MimeContent><ns2:MimeContentType>application/pdf</ns2:MimeContentType><ns2:MimeContentId>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_2.pdf@my.com</ns2:MimeContentId></ns2:MimeContent></ns2:Bijlage></ns2:DocumentAggregatieniveau></ns2:DocumentAggregatieniveaus></ns2:DocumentBericht>"; Omvang="3512"";

// Extract Key value pairs
Matcher paramMatcher = keyValuePairsPattern.matcher(logentry);
while (paramMatcher.find()) {
System.out.println(paramMatcher.group("key") + "<=>" + paramMatcher.group("value"));
}
}


}



Which gives the result



Bedrijfsdocument<=>BD-023005 Document
Richting<=>Uitgaand
Status<=>verzonden
Zaaknummer<=>2323343333
MessageID<=>ef5c6e9e-849e-4d80-af86-92fc127e7178
ConversationID<=>5571c03e-62a8-4fce-81ff-9fe31b7b276c
RefToMessageId<=>34333139343034303934303135343731
MMDBestand<=>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd
Bericht<=><?xml version=
encoding<=>UTF-8
standalone<=>yes
BDVersie<=>2.1
BDNaam<=>TA-022305
xmlns:ns2<=>com.my.test/berichten/document/2
xmlns<=>com.my.test/header/1
- Correspondentie</ns2:Foldernaam><ns2:Revisie>1</ns2:Revisie><ns2:IndicatieGewijzigdeMetadata>0</ns2:IndicatieGewijzigdeMetadata><ns2:Naam>02 - Toezenden stukken rm</ns2:Naam><ns2:Bijlage><ns2:MimeContent><ns2:MimeContentType>application/pdf</ns2:MimeContentType><ns2:MimeContentId>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_2.pdf@my.com</ns2:MimeContentId></ns2:MimeContent></ns2:Bijlage></ns2:DocumentAggregatieniveau></ns2:DocumentAggregatieniveaus></ns2:DocumentBericht>"; Omvang<=>3512


The desired result should would be



Bedrijfsdocument<=>BD-023005 Document
Richting<=>Uitgaand
Status<=>verzonden
Zaaknummer<=>2323343333
MessageID<=>ef5c6e9e-849e-4d80-af86-92fc127e7178
ConversationID<=>5571c03e-62a8-4fce-81ff-9fe31b7b276c
RefToMessageId<=>34333139343034303934303135343731
MMDBestand<=>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd
Bericht<=><?xml version="1.0" encoding="UTF-8" standalone="yes" .....
Omvang<=>3512


I tried to add another non-capture group with an optional "<" before the closing quote of the parameter value, but this does not resolve the issue.



(?:^[.*])?(?:[s]+)(?<key>[^=]+)(?:={1}"{1})(?<value>[^"]+)(?:>?)(?:["]{1})


What i probably need is an expression that defines the end of a value by a " or a <" where <" takes precedence over ".



Any help is appreciated.










share|improve this question























  • Do not use {1} in any of your regexes, it does nothing as it is the default behavior: each pattern is matched once if not quantified in any other way. See regex tag info.

    – Wiktor Stribiżew
    Nov 21 '18 at 7:52













  • Thanks for making the regex better, but it does not answer my question though.

    – pcvnes
    Nov 21 '18 at 7:54











  • Note I suggested leaving out (?:^[.*])? from the pattern because the timestamp is not likely to contain = and will not make any difference. If you ever need to put it back, use (?:^[[^]*])? instead.

    – Wiktor Stribiżew
    Nov 21 '18 at 8:24
















1















I have logfiles from which i need to extract the key and value pairs for each logged line using the following format.



[2018-11-19T13:04:33.031+01:00]  Bedrijfsdocument="BD-023005 Document" Richting="Uitgaand" Status="verzonden"; Zaaknummer="2323343333"; MessageID="ef5c6e9e-849e-4d80-af86-92fc127e7178"; ConversationID="5571c03e-62a8-4fce-81ff-9fe31b7b276c"; RefToMessageId="34333139343034303934303135343731"; MMDBestand="2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd"; Bericht="<?xml version="1.0" encoding="UTF-8" standalone="yes"?><ns2:DocumentBericht BDVersie="2.1" BDNaam="TA-022305" xmlns:ns2="com.my.test/berichten/document/2" xmlns="com.my.test/header/1"><Header><ID>58b5708f-4115-462c-93f3-5fb5134c9e25</ID><VerzendendePartijen><VerzendendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000034000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></VerzendendePartij></VerzendendePartijen><OntvangendePartijen><OntvangendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000076000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></OntvangendePartij></OntvangendePartijen><Datum>2018-11-19</Datum><Tijd>13:04:32.952+01:00</Tijd><SchemaVersieID>1.1</SchemaVersieID></Header><ns2:Zaak><ns2:Identificatie>2100008418</ns2:Identificatie></ns2:Zaak><ns2:DocumentAggregatieniveaus><ns2:DocumentAggregatieniveau><ns2:Classificatie><ns2:DocumentSoort>098</ns2:DocumentSoort></ns2:Classificatie><ns2:Identificatiekenmerk>DOC006256</ns2:Identificatiekenmerk><ns2:Foldernaam>02 - Correspondentie</ns2:Foldernaam><ns2:Revisie>1</ns2:Revisie><ns2:IndicatieGewijzigdeMetadata>0</ns2:IndicatieGewijzigdeMetadata><ns2:Naam>02 - Toezenden stukken rm</ns2:Naam><ns2:Bijlage><ns2:MimeContent><ns2:MimeContentType>application/pdf</ns2:MimeContentType><ns2:MimeContentId>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_2.pdf@my.com</ns2:MimeContentId></ns2:MimeContent></ns2:Bijlage></ns2:DocumentAggregatieniveau></ns2:DocumentAggregatieniveaus></ns2:DocumentBericht>"; Omvang="3512"


This is currently parsed using the following regular expression to extract the name and value pairs.



(?:^[.*])?(?:[s]+)(?<key>[^=]+)(?:={1}"{1})(?<value>[^"]+)(?:["]{1})


It works fine, except for the key 'Bericht' which contains xml and also non-escaped quote's. The content of this key is a fact for me, so should handle this in my code to parse the logline. So i am looking for a way to define the end of a parameter value which is " or >" where >" should take precedence over ".



I use the following test code



public class test {

public static void main(String args) {

Pattern keyValuePairsPattern = Pattern.compile("(?:^\[.*\])?(?:[\s]+)(?<key>[^=]+)(?:={1}"{1})(?<value>[^"]+)(?:["]{1})");
String logentry = "[2018-11-19T13:04:33.031+01:00] Bedrijfsdocument="BD-023005 Document" Richting="Uitgaand" Status="verzonden"; Zaaknummer="2323343333"; MessageID="ef5c6e9e-849e-4d80-af86-92fc127e7178"; ConversationID="5571c03e-62a8-4fce-81ff-9fe31b7b276c"; RefToMessageId="34333139343034303934303135343731"; MMDBestand="2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd"; Bericht="<?xml version="1.0" encoding="UTF-8" standalone="yes"?><ns2:DocumentBericht BDVersie="2.1" BDNaam="TA-022305" xmlns:ns2="com.my.test/berichten/document/2" xmlns="com.my.test/header/1"><Header><ID>58b5708f-4115-462c-93f3-5fb5134c9e25</ID><VerzendendePartijen><VerzendendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000034000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></VerzendendePartij></VerzendendePartijen><OntvangendePartijen><OntvangendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000076000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></OntvangendePartij></OntvangendePartijen><Datum>2018-11-19</Datum><Tijd>13:04:32.952+01:00</Tijd><SchemaVersieID>1.1</SchemaVersieID></Header><ns2:Zaak><ns2:Identificatie>2100008418</ns2:Identificatie></ns2:Zaak><ns2:DocumentAggregatieniveaus><ns2:DocumentAggregatieniveau><ns2:Classificatie><ns2:DocumentSoort>098</ns2:DocumentSoort></ns2:Classificatie><ns2:Identificatiekenmerk>DOC006256</ns2:Identificatiekenmerk><ns2:Foldernaam>02 - Correspondentie</ns2:Foldernaam><ns2:Revisie>1</ns2:Revisie><ns2:IndicatieGewijzigdeMetadata>0</ns2:IndicatieGewijzigdeMetadata><ns2:Naam>02 - Toezenden stukken rm</ns2:Naam><ns2:Bijlage><ns2:MimeContent><ns2:MimeContentType>application/pdf</ns2:MimeContentType><ns2:MimeContentId>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_2.pdf@my.com</ns2:MimeContentId></ns2:MimeContent></ns2:Bijlage></ns2:DocumentAggregatieniveau></ns2:DocumentAggregatieniveaus></ns2:DocumentBericht>"; Omvang="3512"";

// Extract Key value pairs
Matcher paramMatcher = keyValuePairsPattern.matcher(logentry);
while (paramMatcher.find()) {
System.out.println(paramMatcher.group("key") + "<=>" + paramMatcher.group("value"));
}
}


}



Which gives the result



Bedrijfsdocument<=>BD-023005 Document
Richting<=>Uitgaand
Status<=>verzonden
Zaaknummer<=>2323343333
MessageID<=>ef5c6e9e-849e-4d80-af86-92fc127e7178
ConversationID<=>5571c03e-62a8-4fce-81ff-9fe31b7b276c
RefToMessageId<=>34333139343034303934303135343731
MMDBestand<=>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd
Bericht<=><?xml version=
encoding<=>UTF-8
standalone<=>yes
BDVersie<=>2.1
BDNaam<=>TA-022305
xmlns:ns2<=>com.my.test/berichten/document/2
xmlns<=>com.my.test/header/1
- Correspondentie</ns2:Foldernaam><ns2:Revisie>1</ns2:Revisie><ns2:IndicatieGewijzigdeMetadata>0</ns2:IndicatieGewijzigdeMetadata><ns2:Naam>02 - Toezenden stukken rm</ns2:Naam><ns2:Bijlage><ns2:MimeContent><ns2:MimeContentType>application/pdf</ns2:MimeContentType><ns2:MimeContentId>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_2.pdf@my.com</ns2:MimeContentId></ns2:MimeContent></ns2:Bijlage></ns2:DocumentAggregatieniveau></ns2:DocumentAggregatieniveaus></ns2:DocumentBericht>"; Omvang<=>3512


The desired result should would be



Bedrijfsdocument<=>BD-023005 Document
Richting<=>Uitgaand
Status<=>verzonden
Zaaknummer<=>2323343333
MessageID<=>ef5c6e9e-849e-4d80-af86-92fc127e7178
ConversationID<=>5571c03e-62a8-4fce-81ff-9fe31b7b276c
RefToMessageId<=>34333139343034303934303135343731
MMDBestand<=>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd
Bericht<=><?xml version="1.0" encoding="UTF-8" standalone="yes" .....
Omvang<=>3512


I tried to add another non-capture group with an optional "<" before the closing quote of the parameter value, but this does not resolve the issue.



(?:^[.*])?(?:[s]+)(?<key>[^=]+)(?:={1}"{1})(?<value>[^"]+)(?:>?)(?:["]{1})


What i probably need is an expression that defines the end of a value by a " or a <" where <" takes precedence over ".



Any help is appreciated.










share|improve this question























  • Do not use {1} in any of your regexes, it does nothing as it is the default behavior: each pattern is matched once if not quantified in any other way. See regex tag info.

    – Wiktor Stribiżew
    Nov 21 '18 at 7:52













  • Thanks for making the regex better, but it does not answer my question though.

    – pcvnes
    Nov 21 '18 at 7:54











  • Note I suggested leaving out (?:^[.*])? from the pattern because the timestamp is not likely to contain = and will not make any difference. If you ever need to put it back, use (?:^[[^]*])? instead.

    – Wiktor Stribiżew
    Nov 21 '18 at 8:24














1












1








1








I have logfiles from which i need to extract the key and value pairs for each logged line using the following format.



[2018-11-19T13:04:33.031+01:00]  Bedrijfsdocument="BD-023005 Document" Richting="Uitgaand" Status="verzonden"; Zaaknummer="2323343333"; MessageID="ef5c6e9e-849e-4d80-af86-92fc127e7178"; ConversationID="5571c03e-62a8-4fce-81ff-9fe31b7b276c"; RefToMessageId="34333139343034303934303135343731"; MMDBestand="2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd"; Bericht="<?xml version="1.0" encoding="UTF-8" standalone="yes"?><ns2:DocumentBericht BDVersie="2.1" BDNaam="TA-022305" xmlns:ns2="com.my.test/berichten/document/2" xmlns="com.my.test/header/1"><Header><ID>58b5708f-4115-462c-93f3-5fb5134c9e25</ID><VerzendendePartijen><VerzendendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000034000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></VerzendendePartij></VerzendendePartijen><OntvangendePartijen><OntvangendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000076000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></OntvangendePartij></OntvangendePartijen><Datum>2018-11-19</Datum><Tijd>13:04:32.952+01:00</Tijd><SchemaVersieID>1.1</SchemaVersieID></Header><ns2:Zaak><ns2:Identificatie>2100008418</ns2:Identificatie></ns2:Zaak><ns2:DocumentAggregatieniveaus><ns2:DocumentAggregatieniveau><ns2:Classificatie><ns2:DocumentSoort>098</ns2:DocumentSoort></ns2:Classificatie><ns2:Identificatiekenmerk>DOC006256</ns2:Identificatiekenmerk><ns2:Foldernaam>02 - Correspondentie</ns2:Foldernaam><ns2:Revisie>1</ns2:Revisie><ns2:IndicatieGewijzigdeMetadata>0</ns2:IndicatieGewijzigdeMetadata><ns2:Naam>02 - Toezenden stukken rm</ns2:Naam><ns2:Bijlage><ns2:MimeContent><ns2:MimeContentType>application/pdf</ns2:MimeContentType><ns2:MimeContentId>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_2.pdf@my.com</ns2:MimeContentId></ns2:MimeContent></ns2:Bijlage></ns2:DocumentAggregatieniveau></ns2:DocumentAggregatieniveaus></ns2:DocumentBericht>"; Omvang="3512"


This is currently parsed using the following regular expression to extract the name and value pairs.



(?:^[.*])?(?:[s]+)(?<key>[^=]+)(?:={1}"{1})(?<value>[^"]+)(?:["]{1})


It works fine, except for the key 'Bericht' which contains xml and also non-escaped quote's. The content of this key is a fact for me, so should handle this in my code to parse the logline. So i am looking for a way to define the end of a parameter value which is " or >" where >" should take precedence over ".



I use the following test code



public class test {

public static void main(String args) {

Pattern keyValuePairsPattern = Pattern.compile("(?:^\[.*\])?(?:[\s]+)(?<key>[^=]+)(?:={1}"{1})(?<value>[^"]+)(?:["]{1})");
String logentry = "[2018-11-19T13:04:33.031+01:00] Bedrijfsdocument="BD-023005 Document" Richting="Uitgaand" Status="verzonden"; Zaaknummer="2323343333"; MessageID="ef5c6e9e-849e-4d80-af86-92fc127e7178"; ConversationID="5571c03e-62a8-4fce-81ff-9fe31b7b276c"; RefToMessageId="34333139343034303934303135343731"; MMDBestand="2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd"; Bericht="<?xml version="1.0" encoding="UTF-8" standalone="yes"?><ns2:DocumentBericht BDVersie="2.1" BDNaam="TA-022305" xmlns:ns2="com.my.test/berichten/document/2" xmlns="com.my.test/header/1"><Header><ID>58b5708f-4115-462c-93f3-5fb5134c9e25</ID><VerzendendePartijen><VerzendendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000034000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></VerzendendePartij></VerzendendePartijen><OntvangendePartijen><OntvangendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000076000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></OntvangendePartij></OntvangendePartijen><Datum>2018-11-19</Datum><Tijd>13:04:32.952+01:00</Tijd><SchemaVersieID>1.1</SchemaVersieID></Header><ns2:Zaak><ns2:Identificatie>2100008418</ns2:Identificatie></ns2:Zaak><ns2:DocumentAggregatieniveaus><ns2:DocumentAggregatieniveau><ns2:Classificatie><ns2:DocumentSoort>098</ns2:DocumentSoort></ns2:Classificatie><ns2:Identificatiekenmerk>DOC006256</ns2:Identificatiekenmerk><ns2:Foldernaam>02 - Correspondentie</ns2:Foldernaam><ns2:Revisie>1</ns2:Revisie><ns2:IndicatieGewijzigdeMetadata>0</ns2:IndicatieGewijzigdeMetadata><ns2:Naam>02 - Toezenden stukken rm</ns2:Naam><ns2:Bijlage><ns2:MimeContent><ns2:MimeContentType>application/pdf</ns2:MimeContentType><ns2:MimeContentId>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_2.pdf@my.com</ns2:MimeContentId></ns2:MimeContent></ns2:Bijlage></ns2:DocumentAggregatieniveau></ns2:DocumentAggregatieniveaus></ns2:DocumentBericht>"; Omvang="3512"";

// Extract Key value pairs
Matcher paramMatcher = keyValuePairsPattern.matcher(logentry);
while (paramMatcher.find()) {
System.out.println(paramMatcher.group("key") + "<=>" + paramMatcher.group("value"));
}
}


}



Which gives the result



Bedrijfsdocument<=>BD-023005 Document
Richting<=>Uitgaand
Status<=>verzonden
Zaaknummer<=>2323343333
MessageID<=>ef5c6e9e-849e-4d80-af86-92fc127e7178
ConversationID<=>5571c03e-62a8-4fce-81ff-9fe31b7b276c
RefToMessageId<=>34333139343034303934303135343731
MMDBestand<=>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd
Bericht<=><?xml version=
encoding<=>UTF-8
standalone<=>yes
BDVersie<=>2.1
BDNaam<=>TA-022305
xmlns:ns2<=>com.my.test/berichten/document/2
xmlns<=>com.my.test/header/1
- Correspondentie</ns2:Foldernaam><ns2:Revisie>1</ns2:Revisie><ns2:IndicatieGewijzigdeMetadata>0</ns2:IndicatieGewijzigdeMetadata><ns2:Naam>02 - Toezenden stukken rm</ns2:Naam><ns2:Bijlage><ns2:MimeContent><ns2:MimeContentType>application/pdf</ns2:MimeContentType><ns2:MimeContentId>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_2.pdf@my.com</ns2:MimeContentId></ns2:MimeContent></ns2:Bijlage></ns2:DocumentAggregatieniveau></ns2:DocumentAggregatieniveaus></ns2:DocumentBericht>"; Omvang<=>3512


The desired result should would be



Bedrijfsdocument<=>BD-023005 Document
Richting<=>Uitgaand
Status<=>verzonden
Zaaknummer<=>2323343333
MessageID<=>ef5c6e9e-849e-4d80-af86-92fc127e7178
ConversationID<=>5571c03e-62a8-4fce-81ff-9fe31b7b276c
RefToMessageId<=>34333139343034303934303135343731
MMDBestand<=>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd
Bericht<=><?xml version="1.0" encoding="UTF-8" standalone="yes" .....
Omvang<=>3512


I tried to add another non-capture group with an optional "<" before the closing quote of the parameter value, but this does not resolve the issue.



(?:^[.*])?(?:[s]+)(?<key>[^=]+)(?:={1}"{1})(?<value>[^"]+)(?:>?)(?:["]{1})


What i probably need is an expression that defines the end of a value by a " or a <" where <" takes precedence over ".



Any help is appreciated.










share|improve this question














I have logfiles from which i need to extract the key and value pairs for each logged line using the following format.



[2018-11-19T13:04:33.031+01:00]  Bedrijfsdocument="BD-023005 Document" Richting="Uitgaand" Status="verzonden"; Zaaknummer="2323343333"; MessageID="ef5c6e9e-849e-4d80-af86-92fc127e7178"; ConversationID="5571c03e-62a8-4fce-81ff-9fe31b7b276c"; RefToMessageId="34333139343034303934303135343731"; MMDBestand="2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd"; Bericht="<?xml version="1.0" encoding="UTF-8" standalone="yes"?><ns2:DocumentBericht BDVersie="2.1" BDNaam="TA-022305" xmlns:ns2="com.my.test/berichten/document/2" xmlns="com.my.test/header/1"><Header><ID>58b5708f-4115-462c-93f3-5fb5134c9e25</ID><VerzendendePartijen><VerzendendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000034000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></VerzendendePartij></VerzendendePartijen><OntvangendePartijen><OntvangendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000076000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></OntvangendePartij></OntvangendePartijen><Datum>2018-11-19</Datum><Tijd>13:04:32.952+01:00</Tijd><SchemaVersieID>1.1</SchemaVersieID></Header><ns2:Zaak><ns2:Identificatie>2100008418</ns2:Identificatie></ns2:Zaak><ns2:DocumentAggregatieniveaus><ns2:DocumentAggregatieniveau><ns2:Classificatie><ns2:DocumentSoort>098</ns2:DocumentSoort></ns2:Classificatie><ns2:Identificatiekenmerk>DOC006256</ns2:Identificatiekenmerk><ns2:Foldernaam>02 - Correspondentie</ns2:Foldernaam><ns2:Revisie>1</ns2:Revisie><ns2:IndicatieGewijzigdeMetadata>0</ns2:IndicatieGewijzigdeMetadata><ns2:Naam>02 - Toezenden stukken rm</ns2:Naam><ns2:Bijlage><ns2:MimeContent><ns2:MimeContentType>application/pdf</ns2:MimeContentType><ns2:MimeContentId>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_2.pdf@my.com</ns2:MimeContentId></ns2:MimeContent></ns2:Bijlage></ns2:DocumentAggregatieniveau></ns2:DocumentAggregatieniveaus></ns2:DocumentBericht>"; Omvang="3512"


This is currently parsed using the following regular expression to extract the name and value pairs.



(?:^[.*])?(?:[s]+)(?<key>[^=]+)(?:={1}"{1})(?<value>[^"]+)(?:["]{1})


It works fine, except for the key 'Bericht' which contains xml and also non-escaped quote's. The content of this key is a fact for me, so should handle this in my code to parse the logline. So i am looking for a way to define the end of a parameter value which is " or >" where >" should take precedence over ".



I use the following test code



public class test {

public static void main(String args) {

Pattern keyValuePairsPattern = Pattern.compile("(?:^\[.*\])?(?:[\s]+)(?<key>[^=]+)(?:={1}"{1})(?<value>[^"]+)(?:["]{1})");
String logentry = "[2018-11-19T13:04:33.031+01:00] Bedrijfsdocument="BD-023005 Document" Richting="Uitgaand" Status="verzonden"; Zaaknummer="2323343333"; MessageID="ef5c6e9e-849e-4d80-af86-92fc127e7178"; ConversationID="5571c03e-62a8-4fce-81ff-9fe31b7b276c"; RefToMessageId="34333139343034303934303135343731"; MMDBestand="2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd"; Bericht="<?xml version="1.0" encoding="UTF-8" standalone="yes"?><ns2:DocumentBericht BDVersie="2.1" BDNaam="TA-022305" xmlns:ns2="com.my.test/berichten/document/2" xmlns="com.my.test/header/1"><Header><ID>58b5708f-4115-462c-93f3-5fb5134c9e25</ID><VerzendendePartijen><VerzendendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000034000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></VerzendendePartij></VerzendendePartijen><OntvangendePartijen><OntvangendePartij><Volgnummer>1</Volgnummer><RegistratieveRelatiePartij><Identificatie>00000004000000076000_OTA</Identificatie><SoortRegistratie>15</SoortRegistratie></RegistratieveRelatiePartij></OntvangendePartij></OntvangendePartijen><Datum>2018-11-19</Datum><Tijd>13:04:32.952+01:00</Tijd><SchemaVersieID>1.1</SchemaVersieID></Header><ns2:Zaak><ns2:Identificatie>2100008418</ns2:Identificatie></ns2:Zaak><ns2:DocumentAggregatieniveaus><ns2:DocumentAggregatieniveau><ns2:Classificatie><ns2:DocumentSoort>098</ns2:DocumentSoort></ns2:Classificatie><ns2:Identificatiekenmerk>DOC006256</ns2:Identificatiekenmerk><ns2:Foldernaam>02 - Correspondentie</ns2:Foldernaam><ns2:Revisie>1</ns2:Revisie><ns2:IndicatieGewijzigdeMetadata>0</ns2:IndicatieGewijzigdeMetadata><ns2:Naam>02 - Toezenden stukken rm</ns2:Naam><ns2:Bijlage><ns2:MimeContent><ns2:MimeContentType>application/pdf</ns2:MimeContentType><ns2:MimeContentId>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_2.pdf@my.com</ns2:MimeContentId></ns2:MimeContent></ns2:Bijlage></ns2:DocumentAggregatieniveau></ns2:DocumentAggregatieniveaus></ns2:DocumentBericht>"; Omvang="3512"";

// Extract Key value pairs
Matcher paramMatcher = keyValuePairsPattern.matcher(logentry);
while (paramMatcher.find()) {
System.out.println(paramMatcher.group("key") + "<=>" + paramMatcher.group("value"));
}
}


}



Which gives the result



Bedrijfsdocument<=>BD-023005 Document
Richting<=>Uitgaand
Status<=>verzonden
Zaaknummer<=>2323343333
MessageID<=>ef5c6e9e-849e-4d80-af86-92fc127e7178
ConversationID<=>5571c03e-62a8-4fce-81ff-9fe31b7b276c
RefToMessageId<=>34333139343034303934303135343731
MMDBestand<=>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd
Bericht<=><?xml version=
encoding<=>UTF-8
standalone<=>yes
BDVersie<=>2.1
BDNaam<=>TA-022305
xmlns:ns2<=>com.my.test/berichten/document/2
xmlns<=>com.my.test/header/1
- Correspondentie</ns2:Foldernaam><ns2:Revisie>1</ns2:Revisie><ns2:IndicatieGewijzigdeMetadata>0</ns2:IndicatieGewijzigdeMetadata><ns2:Naam>02 - Toezenden stukken rm</ns2:Naam><ns2:Bijlage><ns2:MimeContent><ns2:MimeContentType>application/pdf</ns2:MimeContentType><ns2:MimeContentId>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_2.pdf@my.com</ns2:MimeContentId></ns2:MimeContent></ns2:Bijlage></ns2:DocumentAggregatieniveau></ns2:DocumentAggregatieniveaus></ns2:DocumentBericht>"; Omvang<=>3512


The desired result should would be



Bedrijfsdocument<=>BD-023005 Document
Richting<=>Uitgaand
Status<=>verzonden
Zaaknummer<=>2323343333
MessageID<=>ef5c6e9e-849e-4d80-af86-92fc127e7178
ConversationID<=>5571c03e-62a8-4fce-81ff-9fe31b7b276c
RefToMessageId<=>34333139343034303934303135343731
MMDBestand<=>2018-11-19_9bf1caf8-ca3d-43ae-b046-fa44142faa36_0_MMD.mmd
Bericht<=><?xml version="1.0" encoding="UTF-8" standalone="yes" .....
Omvang<=>3512


I tried to add another non-capture group with an optional "<" before the closing quote of the parameter value, but this does not resolve the issue.



(?:^[.*])?(?:[s]+)(?<key>[^=]+)(?:={1}"{1})(?<value>[^"]+)(?:>?)(?:["]{1})


What i probably need is an expression that defines the end of a value by a " or a <" where <" takes precedence over ".



Any help is appreciated.







regex key-value






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 21 '18 at 7:49









pcvnespcvnes

3672531




3672531













  • Do not use {1} in any of your regexes, it does nothing as it is the default behavior: each pattern is matched once if not quantified in any other way. See regex tag info.

    – Wiktor Stribiżew
    Nov 21 '18 at 7:52













  • Thanks for making the regex better, but it does not answer my question though.

    – pcvnes
    Nov 21 '18 at 7:54











  • Note I suggested leaving out (?:^[.*])? from the pattern because the timestamp is not likely to contain = and will not make any difference. If you ever need to put it back, use (?:^[[^]*])? instead.

    – Wiktor Stribiżew
    Nov 21 '18 at 8:24



















  • Do not use {1} in any of your regexes, it does nothing as it is the default behavior: each pattern is matched once if not quantified in any other way. See regex tag info.

    – Wiktor Stribiżew
    Nov 21 '18 at 7:52













  • Thanks for making the regex better, but it does not answer my question though.

    – pcvnes
    Nov 21 '18 at 7:54











  • Note I suggested leaving out (?:^[.*])? from the pattern because the timestamp is not likely to contain = and will not make any difference. If you ever need to put it back, use (?:^[[^]*])? instead.

    – Wiktor Stribiżew
    Nov 21 '18 at 8:24

















Do not use {1} in any of your regexes, it does nothing as it is the default behavior: each pattern is matched once if not quantified in any other way. See regex tag info.

– Wiktor Stribiżew
Nov 21 '18 at 7:52







Do not use {1} in any of your regexes, it does nothing as it is the default behavior: each pattern is matched once if not quantified in any other way. See regex tag info.

– Wiktor Stribiżew
Nov 21 '18 at 7:52















Thanks for making the regex better, but it does not answer my question though.

– pcvnes
Nov 21 '18 at 7:54





Thanks for making the regex better, but it does not answer my question though.

– pcvnes
Nov 21 '18 at 7:54













Note I suggested leaving out (?:^[.*])? from the pattern because the timestamp is not likely to contain = and will not make any difference. If you ever need to put it back, use (?:^[[^]*])? instead.

– Wiktor Stribiżew
Nov 21 '18 at 8:24





Note I suggested leaving out (?:^[.*])? from the pattern because the timestamp is not likely to contain = and will not make any difference. If you ever need to put it back, use (?:^[[^]*])? instead.

– Wiktor Stribiżew
Nov 21 '18 at 8:24












1 Answer
1






active

oldest

votes


















1














You may use



s(?<key>[^=s]+)="(?<value>(?:<[^<>]*>|[^"])*)"


In Java:



String pat = "\s(?<key>[^=\s]+)="(?<value>(?:<[^<>]*>|[^"])*)"";


See the regex demo. The first s can even be omitted, but it makes it more efficient.



Details





  • s - whitespace


  • (?<key>[^=s]+) - Group "key": 1 or more chars other than whitespace and =


  • =" - a literal text


  • (?<value>(?:<[^<>]*>|[^"])*) - Group "value": any substring between < and > with no </> (<[^<>]*>) inside or (|) any char other than a double quotation mark ([^"])


  • " - a double quote






share|improve this answer



















  • 1





    Took me some time to understand the <[^<>]*> part, but works like a charm. Learned something again, thanks!

    – pcvnes
    Nov 21 '18 at 8:23











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1 Answer
1






active

oldest

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1 Answer
1






active

oldest

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active

oldest

votes






active

oldest

votes









1














You may use



s(?<key>[^=s]+)="(?<value>(?:<[^<>]*>|[^"])*)"


In Java:



String pat = "\s(?<key>[^=\s]+)="(?<value>(?:<[^<>]*>|[^"])*)"";


See the regex demo. The first s can even be omitted, but it makes it more efficient.



Details





  • s - whitespace


  • (?<key>[^=s]+) - Group "key": 1 or more chars other than whitespace and =


  • =" - a literal text


  • (?<value>(?:<[^<>]*>|[^"])*) - Group "value": any substring between < and > with no </> (<[^<>]*>) inside or (|) any char other than a double quotation mark ([^"])


  • " - a double quote






share|improve this answer



















  • 1





    Took me some time to understand the <[^<>]*> part, but works like a charm. Learned something again, thanks!

    – pcvnes
    Nov 21 '18 at 8:23
















1














You may use



s(?<key>[^=s]+)="(?<value>(?:<[^<>]*>|[^"])*)"


In Java:



String pat = "\s(?<key>[^=\s]+)="(?<value>(?:<[^<>]*>|[^"])*)"";


See the regex demo. The first s can even be omitted, but it makes it more efficient.



Details





  • s - whitespace


  • (?<key>[^=s]+) - Group "key": 1 or more chars other than whitespace and =


  • =" - a literal text


  • (?<value>(?:<[^<>]*>|[^"])*) - Group "value": any substring between < and > with no </> (<[^<>]*>) inside or (|) any char other than a double quotation mark ([^"])


  • " - a double quote






share|improve this answer



















  • 1





    Took me some time to understand the <[^<>]*> part, but works like a charm. Learned something again, thanks!

    – pcvnes
    Nov 21 '18 at 8:23














1












1








1







You may use



s(?<key>[^=s]+)="(?<value>(?:<[^<>]*>|[^"])*)"


In Java:



String pat = "\s(?<key>[^=\s]+)="(?<value>(?:<[^<>]*>|[^"])*)"";


See the regex demo. The first s can even be omitted, but it makes it more efficient.



Details





  • s - whitespace


  • (?<key>[^=s]+) - Group "key": 1 or more chars other than whitespace and =


  • =" - a literal text


  • (?<value>(?:<[^<>]*>|[^"])*) - Group "value": any substring between < and > with no </> (<[^<>]*>) inside or (|) any char other than a double quotation mark ([^"])


  • " - a double quote






share|improve this answer













You may use



s(?<key>[^=s]+)="(?<value>(?:<[^<>]*>|[^"])*)"


In Java:



String pat = "\s(?<key>[^=\s]+)="(?<value>(?:<[^<>]*>|[^"])*)"";


See the regex demo. The first s can even be omitted, but it makes it more efficient.



Details





  • s - whitespace


  • (?<key>[^=s]+) - Group "key": 1 or more chars other than whitespace and =


  • =" - a literal text


  • (?<value>(?:<[^<>]*>|[^"])*) - Group "value": any substring between < and > with no </> (<[^<>]*>) inside or (|) any char other than a double quotation mark ([^"])


  • " - a double quote







share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 21 '18 at 8:09









Wiktor StribiżewWiktor Stribiżew

324k16146226




324k16146226








  • 1





    Took me some time to understand the <[^<>]*> part, but works like a charm. Learned something again, thanks!

    – pcvnes
    Nov 21 '18 at 8:23














  • 1





    Took me some time to understand the <[^<>]*> part, but works like a charm. Learned something again, thanks!

    – pcvnes
    Nov 21 '18 at 8:23








1




1





Took me some time to understand the <[^<>]*> part, but works like a charm. Learned something again, thanks!

– pcvnes
Nov 21 '18 at 8:23





Took me some time to understand the <[^<>]*> part, but works like a charm. Learned something again, thanks!

– pcvnes
Nov 21 '18 at 8:23




















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Why https connections are so slow when debugging (stepping over) in Java?