Ant update version number in file but not in script - ant

Question

I'm currently working on a script that automatically increments version number. The version is in major.minor.build format so I can't use buildnumber. I've managed to increment the property in file like this:
<propertyfile file="./build.properties">
<entry key="ver.minor" type="int" operation="+" value="1" pattern="0"/>
</propertyfile>
This works but ver.minor is not incremented in script. <property file="build.properties"/> also doesn't help.

Answer 1

You can find the answer / explanation on Alessandro's blog: http://www.sephiroth.it/weblog/archives/2010/01/update_your_app_version_using_ant_bui.php
Here's the target:
<target name="update-version">
<propertyset id="tdate"></propertyset>
<tstamp>
<format property="tdate" pattern="yyyyMMdd"/>
</tstamp>
<buildnumber file="build.number"/>
<echo>updating version to current datetime: ${tdate}</echo>
<replaceregexp byline="true">
<regexp pattern="public static const BUILD_DATE: String = \'([0-9]+)'"/>
<substitution expression="public static const BUILD_DATE: String = '${tdate}'"/>
<fileset dir="src/it/sephiroth/somestuff">
<include name="Library.as"/>
</fileset>
</replaceregexp>
<replaceregexp byline="true">
<regexp pattern="public static const BUILD_NUMBER: String = \'([0-9\.]+)'"/>
<substitution expression="public static const BUILD_NUMBER: String = '${build.number}'"/>
<fileset dir="src/it/sephiroth/somestuff">
<include name="Library.as"/>
</fileset>
</replaceregexp>
Alessandro's example is for Actionscript which didn't work too well on my Java, so here's what I used:
<target name="update-version">
<property file="build_info.properties" />
<property name="build.number" value="${build.major.number}.${build.minor.number}.${build.revision.number}" />
<echo>Updating build number: ${build.number}</echo>
<propertyset id="tdate" />
<tstamp>
<!-- 02.10.2011 21:27 -->
<format property="tdate" pattern="MM.dd.yyyy hh:mm" />
</tstamp>
<echo>Updating version to current datetime: ${tdate}</echo>
<replaceregexp byline="true"
match="BUILD_DATE = "([0-9\.]+)""
replace="BUILD_DATE = "${tdate}"">
<fileset dir="src/my/package">
<include name="Application.java" />
</fileset>
</replaceregexp>
<replaceregexp byline="true"
match="BUILD_NUMBER = "([0-9\.]+)""
replace="BUILD_NUMBER = "${build.number}"">
<fileset dir="src/my/package">
<include name="Application.java" />
</fileset>
</replaceregexp>
</target>
The only catch is that you have to have a properties file named "build_info.properties" with the three properties in it.
build.major.number=01
build.minor.number=00
build.revision.number=0001