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Subject: RE: 2nd try: Creating property using regular expression on
 string/property value
Date: Wed, 19 Feb 2003 13:12:54 -0000
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Thread-Topic: 2nd try: Creating property using regular expression on
 string/property value
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From: SimonRichardson2@hbosts.com
To: user@ant.apache.org
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You can't change the values of properties because they're immutable.

But you could create a second property based on the value of your string by:
1) creating a property file
2) using regular expression to change the value in the property file.
3) source the properties

Some example ..

    <target name=3D"foo.default"
            description=3D"create newchangestring from string1">
        <!-- 1) create a property file. -->
        <property name=3D"string1" value=3D"tom dick"/>
        <echo message=3D"changestring=3D${string1}"/>
        <propertyfile file=3D"temp.properties">
            <entry key=3D"changestring" value=3D"${string1}"/>
        </propertyfile>
        <!-- 2) change the value in the property file. -->
        <replaceregexp file=3D"temp.properties"
            match=3D"changestring=3D(.*)"
            replace=3D"newchangestring=3D\1\ and\ harry"/>
        <!-- 3) source the properties -->
        <property file=3D"temp.properties"/>
        <echo message=3D"newchangestring=3D${newchangestring}"/>
    </target>


output..

=66oo.default:
     [echo] changestring=3Dtom dick
[propertyfile] Updating property file: /temp/temp.properties
     [echo] newchangestring=3Dtom dick and harry

HTH

Simon

> -----Original Message-----
> From: Tony Obermeit [mailto:tonyob@compuserve.com]
> Sent: 19 February 2003 12:36
> To: ant-user@jakarta.apache.org
> Subject: 2nd try: Creating property using regular expression on
> string/property value
>=20
>=20
> I'm still trying to find an answer for this question.  I've=20
> searched the=20
> documentation on regexp which appears to apply to mapping or=20
> selecting=20
> filenames based on a regular expression.  I just want to do a string=20
> replace on a property value using a regular expression.  Any other=20
> ideas?  Just point me to the appropriate ant documentation.
>=20
> thanks
>=20
> Tony
>=20
> >Date: Mon, 17 Feb 2003 07:02:34 +1000
> >To: ant-user@jakarta.apache.org
> >From: Tony Obermeit <tonyob@compuserve.com>
> >Subject: Creating property using regular expression on=20
> string/property value
> >
> >I have a property value that I want to use for part of a=20
> file name but the=20
> >property value sometimes includes spaces that I don't want=20
> to include in=20
> >the filename.  I am looking to create a new property value=20
> but apply a=20
> >regular expression to an existing property value when I=20
> create it.  The=20
> >examples I've seen seem to do this with replacing tokens within an=20
> >existing file, I want to do it effectively within a string=20
> in my build script.
> >
> >Thanks
> >
> >Tony
>=20
>=20
>=20
>=20
> ---------------------------------------------------------------------
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>=20
>=20
>=20

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