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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 36239] New: - <replaceregex> in <tokenfilter> does not honour flags="s"
Date Thu, 18 Aug 2005 10:16:53 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=36239

           Summary: <replaceregex> in <tokenfilter> does not honour
                    flags="s"
           Product: Ant
           Version: 1.6.5
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Core tasks
        AssignedTo: dev@ant.apache.org
        ReportedBy: matt@cenqua.com


When using <repalceregex>, specifying flags="s" has no effect (that is, you want the
regex to span 
lines).

Example:
<project basedir="." default="test" name="test">
  <target name="test">
    <copy overwrite="true" file="src.txt" tofile="dest.txt">
      <filterchain>
	<tokenfilter>
	  <replaceregex pattern="START.*" replace="SNIP" flags="gs"/>
	</tokenfilter>
      </filterchain>
    </copy>
  </target>
</project>

== src.txt ==
line1
foo START this bit should disappear
and so should this bit
== ==

To Reproduce:
Run the above build.xml, and look at dest.txt. Everything from START to EOF should be replaced
with 
"snip", but it is not. Changing or removing the byline attribute has no effect.

Diagnosis:
I had a look at TokenFilter.ChainableReaderFilter. The "byline" attribute seems to be what
I want, but 
running this through a debugger proved that ChainableReaderFilter.chain(Reader) is *never*
called.

Solution:
Not to sure, reading the whole TokenFilter/ChainableReader thing was like chasing a rabbit
down a hole 
:P

Workaround:
I wrote my own FilteredReader to use with <filterreader>

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