build.xml

<?xml version='1.0' encoding='UTF-8'?>
<project name="Sample usage of Salesforce Ant tasks" default="test" basedir="."
	xmlns:sf="http://com.salesforce"
>
	<property name="antlib" value="lib" />
	<taskdef resource="net/sf/antcontrib/antlib.xml">
		<classpath>
			<pathelement location="${antlib}/ant-contrib-1.0b3.jar" />
		</classpath>
	</taskdef>
	
	<taskdef resource="com/salesforce/sforce_ant.properties" uri="http://com.salesforce">
		<classpath>
			<pathelement location="${antlib}/ant-salesforce.jar" />
		</classpath>
	</taskdef>
	
    <property file="build.properties"/>
    <property environment="env"/>
 
    <condition property="sf.username" value=""> <not> <isset property="sf.username"/> </not> </condition>
    <condition property="sf.password" value=""> <not> <isset property="sf.password"/> </not> </condition>
    <condition property="sf.sessionId" value=""> <not> <isset property="sf.sessionId"/> </not> </condition>
    
    <description>
Sample project that deploys a demo of the LightningToVisualforce demo
	</description>
    
    <target name="makeCredentials" description="Creates Credentials">
    	<echo><![CDATA[
What is your username?]]></echo>
		<input addproperty="username" />
    	<echo><![CDATA[
What is your password?]]></echo>
		<input addproperty="password" />
    	<echo><![CDATA[
What is your security token?]]></echo>
		<input addproperty="token" />
    	<echo><![CDATA[
What is your domain host?
(ex: test.salesforce.com or login.salesforce.com)]]></echo>
		<input addproperty="host" />
		
		<!-- default blanks if someone just hits return -->
		<property name="username" value="" />
		<property name="password" value="" />
		<property name="token" value="" />
		<property name="host" value="" />
		
		<echo file="build.properties"><![CDATA[
# Specify the login credentials for the desired Salesforce organization

sf.username=${username}
sf.password=${password}${token}

#sf.sessionId = <Insert your Salesforce session id here.  Use this or username/password above.  Cannot use both>
#sf.pkgName = <Insert comma separated package names to be retrieved>
#sf.zipFile = <Insert path of the zipfile to be retrieved>
#sf.metadataType = <Insert metadata type name for which listMetadata or bulkRetrieve operations are to be performed>

# Use 'https://login.salesforce.com' for production or developer edition (the default if not specified).
# Use 'https://test.salesforce.com for sandbox.
sf.serverurl=https://${host}

sf.maxPoll=500
# If your network requires an HTTP proxy, see http://ant.apache.org/manual/proxy.html for configuration.
]]></echo>
    </target>
    
    <target name="test" description="Tests the Deploy" depends="checkCredentials">
      <sf:deploy username="${sf.username}" password="${sf.password}" sessionId="${sf.sessionId}" serverurl="${sf.serverurl}" maxPoll="${sf.maxPoll}"
      	deployRoot="src/" checkOnly="true"  rollbackOnError="true"
      	/>
    </target>
    
    <target name="deploy" description="Performs the deploy" depends="checkCredentials">
      <sf:deploy username="${sf.username}" password="${sf.password}" sessionId="${sf.sessionId}" serverurl="${sf.serverurl}" maxPoll="${sf.maxPoll}"
      	deployRoot="src/" checkOnly="false"  rollbackOnError="true"
      	/>
      
      <echo><![CDATA[
Success.

Please navigate to /apex/TEST_PostMessageParent within your environment to see the demo.]]></echo>
    </target>
    
    <!-- internal tasks -->
    
    <target name="checkCredentials">
		<if>
			<or>
				<equals arg1="${sf.username}" arg2="$${sf.username}" />
				<equals arg1="${sf.username}" arg2="" />
			</or>
			<then>
				<echo><![CDATA[
Please run:

ant makeCredentials

to continue.
]]></echo>
				<fail />
			</then>
		</if>
    </target>
    
</project>