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From Ninju Bohra <>
Subject Re: How to update build number without screwing up format
Date Tue, 14 Feb 2006 20:48:01 GMT
How about
1) Read the properties in (via <loadproperties>)
2) Generate a property whose value equals the line of text in question (i.e. the value might
be 'build.number=100')
3) Using the <math> element (from ant-contrib) to generate the next number into a property
4) Assign a property whose value equals the new line you want (i.e. the value might be 'build.number=101')
5) Use the <replace> task to replace the string in the file that matches the value from
step (2) with the string from step (4)
Alternatively use a front-end build number controller (like CruiseControl) to provide you
a forward marching build number

----- Original Message ----
From: Matthew Hughes <>
Sent: Tuesday, February 14, 2006 1:07:23 PM
Subject: How to update build number without screwing up format

I have a file that contains my build.number property.  
Part of my build is updating that number by one on each build using:

<propertyfile file="" >
  <entry default="0001" key="build.number" operation="+" pattern="0000" 
type="int" />

It does what it needs to do, but it also reorders all the other 
properties in the file.  I have a lot of properties in the file and 
group them with carriage returns to make it easier to see what does 
what.   Any suggestions for how to update the number without scrambling 
the order of properties.

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