I have a tomcat log file that I need to parse. It looks like a regular tomcat log:

[datestamp] [DEBUG] something here
[datestamp] [DEBUG] something else here
[datestamp] [ERROR] blah blah
<chunk of crap>
[datestamp] [INFO] bla bla bla
[download]

what I need to do is parse this thing, and regard the [datestamp] as the start of a 'chunk' and the next [datestamp] as the end of the previous chunk (and, obviously, a beginning of a new chunk) In essence, I need to check if the <chunk of crap> between [datestamp #1] and [datestamp #2] contains a specific string. any ideas? edit: real snippet of the log file to be parsed:

[Wed Aug 04 00:10:40.591 2010] [DEBUG] [TP-Processor19, time=128089504
+0587, uri=/ibdsupport/workflow/webapp/workflow/coordinator/gotoCoordi
+natorNew.cb2] [com.boylesoftware.cb2.BLOBJT.cache]: [208973459] Retri
+eve cached object 'segmentProp.map' for segment 142
[Wed Aug 04 00:10:40.591 2010] [DEBUG] [TP-Processor19, time=128089504
+0587, uri=/ibdsupport/workflow/webapp/workflow/coordinator/gotoCoordi
+natorNew.cb2] [com.boylesoftware.cb2.BLOBJT.cache]: [208973459] Retri
+eve cached object 'segmentProp.map' for segment 142

[Wed Aug 04 00:10:40.666 2010] [ERROR] [TP-Processor19, time=128089504
+0587, uri=/ibdsupport/workflow/webapp/workflow/coordinator/gotoCoordi
+natorNew.cb2] [com.boylesoftware.cb2.DAOBJT]: [208973534] Got an erro
+r executing query "fetchJobQueueTime" chunk "5".
com.boylesoftware.cb2.BLException: Database error in the DAO.

      at com.boylesoftware.cb2.DAO.executeUpdate_Internal(DAO.java:248
+3) [cb2ms.jar:na]
        at com.boylesoftware.cb2.DAO.executeNamedQuery(DAO.java:2634) 
+[cb2ms.jar:na]
        at com.boylesoftware.cb2.DAO.fetch_Internal(DAO.java:2524) [cb
+2ms.jar:na]
        at com.boylesoftware.cb2.DAO.fetchWithNamedParams(DAO.java:272
+1) [cb2ms.jar:na]
        at com.boylesoftware.cb2.DAO.fetchWithNamedParams(DAO.java:382
+6) [cb2ms.jar:na]
        at com.somecompany.insidetrack.tt.project.ProjConsoleBLO.fetch
+JobQueueTime(ProjConsoleBLO.java:527) [ProjConsoleBLO.class:na]
        at com.somecompany.insidetrack.tt.presentation.workflow.JobOve
+rviewListPE.init(JobOverviewListPE.java:221) [JobOverviewListPE.class
+:na]
        at com.boylesoftware.cb2.presentation.servlet.ShowPageAction.e
+xecute(ShowPageAction.java:141) [cb2ms.jar:na]
        at com.boylesoftware.cb2.presentation.servlet.CB2Action.execut
+e(CB2Action.java:205) [cb2ms.jar:na]
        at org.apache.struts.action.RequestProcessor.processActionPerf
+orm(Unknown Source) [struts.jar:1.1]

        at java.lang.Thread.run(Thread.java:619) [na:1.6.0_16]
Caused by: msjava.dbpool.DBPoolSQLException: The column prefix '#projJ
+ob' does not match with a table name or alias name used in the query.
+ Either the table is not specified in the FROM clause or it has a cor
+relation name which must be used instead.
 (DataSource: insidetrack-db, Type: SYBASE)

[Wed Aug 04 00:10:40.666 2010] [DEBUG] [TP-Processor19, time=128089504
+0587, uri=/ibdsupport/workflow/webapp/workflow/coordinator/gotoCoordi
+natorNew.cb2] [com.boylesoftware.cb2.DAOBJT]: [208973534] executing c
+hunk "6" with a timeout of 360 seconds
[download]

Code would need to go through these "chunks", find the "DBPoolSQLException" and associate it with the appropriate datestamp it appears under ([Wed Aug 04 00:10:40.666 2010])

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