Writing plugin version to plugin.xml when built on TeamCity

.idea/ant.xml

@@ -50,6 +50,14 @@
       <maximumStackSize value="2" />
       <properties />
     </buildFile>
+    <buildFile url="file://$PROJECT_DIR$/plugin_pre_build.xml">
+      <additionalClassPath />
+      <antReference projectDefault="true" />
+      <customJdkName value="" />
+      <maximumHeapSize value="128" />
+      <maximumStackSize value="2" />
+      <properties />
+    </buildFile>
   </component>
 </project>
 

.idea/artifacts/KotlinPlugin.xml

@@ -7,6 +7,12 @@
         <target>renamePluginZip</target>
       </options>
     </properties>
+    <properties id="ant-preprocessing">
+      <options enabled="true">
+        <file>file://$PROJECT_DIR$/plugin_pre_build.xml</file>
+        <target>writeVersionToPluginXml</target>
+      </options>
+    </properties>
     <root id="archive" name="KotlinPlugin.zip">
       <element id="directory" name="Kotlin">
         <element id="directory" name="lib">

idea/src/META-INF/plugin.xml

@@ -1,7 +1,7 @@
 <idea-plugin version="2">
   <name>Kotlin</name>
   <description>Kotlin language support</description>
-  <version>1.0</version>
+  <version>@snapshot@</version>
   <vendor>JetBrains</vendor>
 
   <application-components>

plugin_post_build.xml

@@ -5,7 +5,6 @@
 
     <target name="renamePluginZip">
         <!-- Rename the zip to kotlin-plugin-${build}.zip-->
-        <echo message="${artifact.output.path}"/>
         <move file="${artifact.output.path}/KotlinPlugin.zip" tofile="${artifact.output.path}/kotlin-plugin-${build.number}.zip">
         </move>
     </target>

plugin_pre_build.xml

@@ -0,0 +1,24 @@
+<project name="Kotlin Plugin Pre-build Step">
+
+    <property name="artifact.output.path" value="${basedir}/out/artifacts/KotlinPlugin"/>
+    <property name="build.number" value="snapshot"/>
+
+    <!-- Sets ${running.locally} to true if the ${build.number} is "snapshot" -->
+    <target name="checkLocal">
+        <condition property="running.locally">
+            <equals arg1="${build.number}" arg2="snapshot"/>
+        </condition>
+    </target>
+
+    <target name="writeVersionToPluginXml" depends="checkLocal" unless="running.locally">
+        <copy file="idea/src/META-INF/plugin.xml" tofile="idea/src/META-INF/plugin.xml-version">
+            <filterchain>
+                <replacetokens>
+                    <token key="snapshot" value="${build.number}"/>
+                </replacetokens>
+            </filterchain>
+        </copy>
+        <copy file="idea/src/META-INF/plugin.xml-version" tofile="idea/src/META-INF/plugin.xml" overwrite="true"/>
+        <delete file="idea/src/META-INF/plugin.xml-version" quiet="true"/>
+    </target>
+</project>