From: Doni Pracner <quinnuendo@gmail.com>
Date: Sat, 26 Jul 2014 18:51:10 +0000 (+0200)
Subject: ant - added build task for versioning by using 'git describe'
X-Git-Tag: v0.1.8~1^2~3
X-Git-Url: http://svarog.pmf.uns.ac.rs/gitweb/?p=mjc2wsl.git;a=commitdiff_plain;h=c71486b667051ba56ee13c49f887822b61572748

ant - added build task for versioning by using 'git describe'
---

diff --git a/build.xml b/build.xml
index 0b12de1..25fb262 100644
--- a/build.xml
+++ b/build.xml
@@ -77,11 +77,40 @@
             <fileset dir="${log.dir}"/>
         </delete>
     </target>
+	
+	<!-- version tasks
+	based on ideas by Jesper Öqvist http://llbit.se/?p=1876 -->
     
+	<!-- this target is only run if the 'version' property is undefined -->
+	
+	<target name="update-version-string" unless="version">
+	        <!-- get a new version string using git describe if possible -->
+	        <echo message="Updating version string..."/>
+	        <exec executable="git" outputproperty="version"
+	                failifexecutionfails="false">
+	                <arg value="describe"/>
+	        </exec>
+	        <antcall target="-store-version-string"/>
+	        <!-- ensure version is defined even if git was not available -->
+	        <property file="${res.dir}/version.properties"/>
+	</target>
     
+	<target name="-store-version-string" if="version">
+	        <!-- store the new  version string in the correct property file -->
+	        <echo message="version=${version}"/>
+	        <propertyfile file="${res.dir}/version.properties">
+	                <entry key="version" value="${version}"/>
+	        </propertyfile>
+	        <exec executable="git" failifexecutionfails="false">
+	                <arg value="update-index"/>
+	                <arg value="--assume-unchanged"/>
+	                <arg value="${res.dir}/version.properties"/>
+	        </exec>
+	</target>
+	
     <!-- mjc2wsl related tasks -->
     
-    <target name="build" depends="init" description="build the mjc2wsl tool">
+    <target name="build" depends="init,update-version-string" description="build the mjc2wsl tool">
         <javac srcdir="${mjc2wsl.src.dir}" destdir="${mjc2wsl.class.dir}" includeAntRuntime='no' />
     </target>