[PATCH] PropertyFile task.

[Jeremy Mawson <je...@qsipayments.com>]

PropertyFile task uses java.util.Properties to modify integer, String and
Date settings in a property file.

The following is an example of it's usage:


    <target name="testPropertyFiles">
    	<property 
    	    name="COPYRIGHT_MESSAGE" 
    	    value="Copyright 2000 Coporation inc\\This file does some of
this\\and some of that" />

        <propertyFile key="Int" type="int" operation="=" value="681"
file="test.txt" />
        <propertyFile key="IntInc" type="int" operation="+" file="test.txt" />
        <propertyFile key="IntDec" type="int" operation="-" file="test.txt" />
        <propertyFile key="NeverDate" type="date" operation="never"
file="test.txt" />
        <propertyFile key="StringEquals" type="string" value="testValue"
file="test.txt" />
        <propertyFile key="NowDate" type="date" operation="now"
file="test.txt" message ="${COPYRIGHT_MESSAGE}" />
    </target>



The propertyFile task must have:
    key, type, file
Other parameters are:
    operation, value, message

Parameter values:
    operation: 
        "=" (set -- default)
        "-" (dec)
        "+" (inc)
        "now" (date and time)
        "never" (empty string)

    type:
        "int"
        "date"
        "string"

String property types can only use the "=" operation
Date property types can only use the "never" or "now" operations
Int property types can only use the "=", "-" or "+" operations

The message property is used for the property file header, with "\\" being
a newline delimiter charater. (This should be '\n' but I couldn't quite get
it right).

Source attached.

Jeremy