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    <p>OK this is not the easiest thing to do with ant. First you need to know what you can change. This means all the names of your constants as well as the corresponding values. Are the constant names unique? If yes this sounds like a map structure to me. Then you need to regexreplace all your source files which contain one or more of these variables so that every constant is replaced with the actual value. This is not what ant is designed for but you can do it with a script def.</p> <p>I would do this with java like this : </p> <p>Store all constant/values into a map (if the constants are unique) else use a different structure.</p> <p>Sample code : </p> <pre><code>&lt;project name="test" default="build"&gt; &lt;property name="constants" value="constants.txt"/&gt; &lt;scriptdef name="replaceConstants" language="java"&gt; &lt;attribute name="constants" /&gt; &lt;attribute name="srcFile" /&gt; &lt;![CDATA[ import java.util.*; import java.util.regex.*; ArrayList constantNameList = new ArrayList(); ArrayList constantValueList = new ArrayList(); var constantFile = attributes.get("constants"); Pattern regex = Pattern.compile("(?&lt;=const)\\s+(\\b\\w+\\b).*?=\\s*(.*?)\\s*;"); Matcher regexMatcher = regex.matcher(constantFile); while (regexMatcher.find()) { constantNameList.add(regexMatcher.group(1)); constantValueList.add(regexMatcher.group(2)); } for(int i = 0; i &lt; constantNameList.size(); ++i) { //debugging System.out.print("key : "); System.out.print(constantNameList.get(i)); System.out.print(" value : "); System.out.println(constantValueList.get(i)); //do the actual replacement here } ]]&gt; &lt;/scriptdef&gt; &lt;target name="build"&gt; &lt;loadfile property="constants.file" srcFile="${constants}"/&gt; &lt;loadfile property="source.file" srcFile="sourceFile.txt"/&gt; &lt;echo message="${constants.file}"/&gt; &lt;replaceConstants constants="${constants.file}" srcFile="${source.file}"/&gt; &lt;/target&gt; &lt;/project&gt; </code></pre> <p>You will need java 1.6 or later to run this as well as <a href="http://www.java2s.com/Code/Jar/ABC/bsh-2.0b5.jar.htm" rel="nofollow">http://www.java2s.com/Code/Jar/ABC/bsh-2.0b5.jar.htm</a></p> <p>This jar to run it.</p> <p>Output : </p> <pre><code>[replaceConstants] key : CONST_1 value : 0 [replaceConstants] key : CONST_LOLO value : -1 [replaceConstants] key : CONST_WHEE value : 2.55 [replaceConstants] key : OTHER_CONST value : "La string!" [replaceConstants] key : ITSAMEMARIO value : "O, HAI!" [replaceConstants] key : MAGE_WALL value : 15 </code></pre> <p>So what I did is stored all the constant names/value into two arrays. You need to iterate through the arrays and regex replace for each of your source files. The whole thing can be a macrodef which you can call multiple times.</p>
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    1. POFlash, Ant and lots of regular expression replaces
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    1. COAwesome! Now I only need to figure out how to use it with fileset, then reading from/writing to files and I am all set!
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    2. CODo you have ant contrib installed? You can use that to iterate over files of a fileset and call a target for each file. This is how I would do it :)
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    3. COI wish I knew. I am using Flash Builder's capabilities (which is afaik eclipse with flash plugin integrated) to execute Ant stuff and I have started with it only today. Nevertheless I don't think it is installed.
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