I need to be able to execute a task for all sub-directories with a certain name in Ant.
For each sub-dir, I need to do an exec task
How can I do this ? Examples I found use fileset for copy tasks, which I can't use with the exec task, or use a for loop which I can't get to work.
I also tried some Javascript, but I can't get the FSO to work at all.
You can do this with the Ant apply task.
The task iterates over the members of a fileset-like object,
and it can process a dirset too.
Here's an example:
<!-- all directories directly under working dir -->
<dirset id="my.dirs" dir="." includes="*" />
<apply executable="ls">
<arg value="-l" />
<dirset refid="my.dirs" />
</apply>
Apply has similar attibutes as the one-shot exec task.
Did you try something like this (you need the antcontrib for task):
<for param="file">
<path>
<fileset dir="${yourdirectory}"/>
</path>
<sequential>
<!-- do the work you need to here -->
<echo>Filename === #{file}
</sequential>
</for>
This reference taken from here.
Related
Within ant, I have a macrodef.
Assuming I have to use this macrodef, and there is a item inside said macrodef that I want to run if the property special.property exists and is true, what do I do?
I currently have
<macrodef name="someName">
<sequential>
<someMacroDefThatSetsTheProerty />
<some:thingHereThatDependsOn if="special.property" />
<sequential>
</macrodef>
Which doesn't work - the some:thingHereThatDependsOn doesnt have an "if" attribute, and I cannot add one to it.
antcontrib is not available.
With a target I can give the target an "if", what can I do with a macrodef?
In Ant 1.9.1 and higher, there is now a new implementation of if and unless attributes. This might be what you're thinking of.
First, you need to put them into your namespace. Add them to your <project> header:
<project name="myproject" basedir="." default="package"
xmlns:if="ant:if"
xmlns:unless="ant:unless">
Now, you can add them to almost any Ant task or sub entity:
<!-- Copy over files from special directory, but only if it exists -->
<available property="special.dir.available"
file="${special.dir} type="dir"/>
<copy todir="${target.dir}>
<fileset dir="${special.dir}" if:true="special.dir.available"/>
<fileset dir="${other.dir}"/>
</copy>
<!-- FTP files over to host, but only if it's on line-->
<condition property="ftp.available">
<isreachable host="${ftp.host}"/>
</condition>
<ftp server="${ftp.host}"
userid="${userid}"
passowrd="${password}"
if:true="ftp.available">
<fileset dir=".../>
</ftp>
This is only possible if the ANT "thingHereThatDependsOn" task supports an "if" attribute.
As stated above, conditional execution in ANT, normally, only applies to targets.
<target name="doSomething" if="allowed.to.do.something">
..
..
</target>
<target name="doSomethingElse" unless="allowed.to.do.something">
..
..
</target>
<target name="go" depends="doSomething,doSomethingElse"/>
We want to loop through directory structure in ant without using foreach .
Is there any elegant way to do the same ?
The apply task can iterate over a set of directories or files
<target name="run-apply">
<apply executable="echo">
<dirset dir="src"/>
</apply>
</target>
I personally like the groovy ANT task
<target name="run-groovy">
<taskdef name="groovy" classname="org.codehaus.groovy.ant.Groovy"/>
<dirset id="dirs" dir="src"/>
<groovy>
project.references.dirs.each {
ant.echo it
}
</groovy>
</target>
The installation of the task jar is easily automated:
<target name="install-groovy">
<mkdir dir="${user.home}/.ant/lib"/>
<get dest="${user.home}/.ant/lib/groovy-all.jar" src="http://search.maven.org/remotecontent?filepath=org/codehaus/groovy/groovy-all/2.1.1/groovy-all-2.1.1.jar"/>
</target>
Finally if you're iterating thru other build files, the subant task is very useful:
<target name="run-subant">
<subant>
<fileset dir="src" includes="**/build.xml"/>
</subant>
</target>
Short answer: Not really. There are ways around this, but I prefer the ant-contrib <for/> task for clarity and simplicity. With the <local/> task, you can now localize values of variables. Before, you sometimes had to use ant-contrib's <var/> task to reset the values, so you could loop through them over and over.
<for param="directory">
<fileset dir="${some.dir}"/>
<sequential>
<local name="foo"/>
<local name="bar"/> <!-- Properties that may change with each iteration -->
<!-- Here be dragons -->
</sequential>
</for>
It's clean, simple, and easy to understand. The big issue many people have with Ant Contrib is that not everyone may have it installed in their $ANT_HOME/lib directory. Far enough. So, if you use ant-contrib, put it as part of your project.
I'll put the ant-contrib jar in ${basedir}/antlib/antcontrib and then put this in my program:
<taskdef resource="net/sf/antcontrib/antlib.xml">
<classpath>
<fileset dir="${basedir}/antlib/antcontrib"/>
</classpath>
</taskdef>
Now, when someone checks out my project, they have ant-contrib already installed (since it's inside my project) and accessible (since I point my <taskdef> task at the location of ant-contrib.jar in my project).
How can i overwrite some existing property with a newly created properties file?
Here is the required structure:
initially load Master.properties
generate new.properties
load new.properties and master.properties
run master.xml (ANT script)
The idea is that Master.properties generates some product version which should be replaced by new.properties. However, other properties in Master.properties should be kept the same.
Reading this does not help as i do not know how can i load the new.properties file
EDIT Here is ANT Script:
<project name="nightly_build" default="main" basedir="C:\Work\NightlyBuild">
<target name="init1">
<sequential>
<property file="C:/Work/NightlyBuild/master.properties"/>
<exec executable="C:/Work/Searchlatestversion.exe">
<arg line='"/SASE Lab Tools" "${Product_Tip}/RELEASE_"'/>
</exec>
<sleep seconds="10"/>
<property file="C:/Work/new.properties"/>
</sequential>
</target>
<target name="init" depends="init1">
<sequential>
<echo message="The product version is ${Product_Version}"/>
<exec executable="C:/Work/checksnapshot.exe">
<arg line='-NightlyBuild ${Product_Version}-AppsMerge' />
</exec>
<sleep seconds="10"/>
<property file="C:/Work/checksnapshot.properties"/>
<tstamp>
<format property="suffix" pattern="yyyy-MM-dd.HHmm"/>
</tstamp>
</sequential>
</target>
<target name="main" depends="init">
<echo message="loading properties files.." />
<echo message="Backing up folder" />
<move file="C:\NightlyBuild\NightlyBuild" tofile="C:\NightlyBuild\NightlyBuild.${suffix}" failonerror="false" />
<exec executable="C:/Work/sortfolder.exe">
<arg line="6" />
</exec>
<exec executable="C:/Work/NightlyBuild/antc.bat">
</exec>
</target>
</project>
in the above script, <exec executable="C:/Work/NightlyBuild/antc.bat"> will run Master.xml ANT script. This Master.xml will load up Master.properties:
<project name="Master ANT Build" default="main" >
<taskdef name="CFileEdit" classname="com.ANT_Tasks.CFileEdit"/>
<!-- ========================================================== -->
<!-- init: sets global properties -->
<!-- ========================================================== -->
<target name="init">
<property environment="env"/>
<!-- ========================================================== -->
<!-- Set the timestamp format -->
<!-- ========================================================== -->
<property file="Master.properties"/>
...
</project>
You should be able to resolve this by looking at the order in which you load (or otherwise specify) your property values. You probably don't need to override property values at all, which something not supported by core Ant.
Maybe you can split your Master.properties into two files - one loaded before you generate new.properties and one loaded after?
Maybe you don't need to generate new.properties at all.
Could you give some more detail on what you need to do?
Since you eventually fork a new Ant process (exec antc.bat), does that not start a fresh environment anyway? If it just loads Master.properties, those are the only properties it will have.
Not sure what your antc.bat does, but it's pretty unusual to exec Ant from Ant in this way. There are two standard tasks which might be useful - Ant and AntCall.
OK running on from your later comments...
Let's say that instead of doing this:
<exec executable="antc.bat">
you instead did something like this:
<ant file="Master.xml" inheritall="false">
<property name="Product_Version" value="${Product_Version}"/>
</ant>
I think that is getting towards what you want. You selectively pass specific values that you have obtained by loading new.properties. See the documentation for the Ant task.
If you still have the problem that you already defined Product_Version before loading new.properties, then I would say get the script you have that produces new.properties to output the version with a different name, e.g. New_Product_Version. Then invoke your master build something like this:
<ant file="Master.xml" inheritall="false">
<property name="Product_Version" value="${New_Product_Version}"/>
</ant>
May be this is a old question. Hopefully OP is reading this.
You can just use the ant task "propertyfile". reference
it can read properties from the file and write back updated values to them.
So, I've got a list of ${locales} and ${externs} and I'm trying to do this. It isn't working. Ant says that java doesn't support the nested "for" element. I suspect my approach is wrong. How should I be trying to do this?
<for list="${locales}" param="locale">
<sequential>
<java jar="whatever.jar" fork="true">
<for list="${externs}" param="extern-file">
<arg line='-f "--externs=${extern_dir}/#{extern-file}"' />
</for>
<arg line="... more stuff" />
</java>
</sequential>
</for>
Ant command-line line args support prefixes and suffixes, which might do the trick for this.
If ${externs} is a comma-separted list you'll need to make it space-separated, perhaps using the ant-contrib propertyregex task.
In outline:
<propertyregex property="externs.arg"
input="${externs}"
regexp="," replace=" " />
<for list="${locales}" param="locale">
<sequential>
<java jar="whatever.jar" fork="true">
<arg line="${externs.arg}"
prefix='-f "--externs=${extern_dir}/'
suffix='"' />
<arg line="... more stuff" />
</java>
</sequential>
</for>
Here are some alternative options you could consider.
Implement a custom Ant task to do what you need.
If you own the Java code you are invoking, update it to be more friendly to your requirements, e.g.
2.1. Passing list of locales and externs.
2.2. Accepting input from a file or standard input (both of which you could write to from Ant)
If you don't own the Java code, implement your own script or Java code to provide an adapter from something easy to pass from Ant to the required args of the target.
I'm not very good with Ant, but we're using it as a build tool. Right now, we can run "ant test" and it'll run through all the unit tests.
However, I'd love to be able to do something like ant test some_module and have it accept some_module as a parameter, and only test that.
I haven't been able to find how to pass command line args to Ant - any ideas?
One solution might be as follows. (I have a project that does this.)
Have a separate target similar to test with a fileset that restricts the test to one class only. Then pass the name of that class using -D at the ant command line:
ant -Dtest.module=MyClassUnderTest single_test
In the build.xml (highly reduced):
<target name="single_test" depends="compile" description="Run one unit test">
<junit>
<batchtest>
<fileset dir="${test.dir}" includes="**/${test.module}.class" />
</batchtest>
</junit>
</target>
You can also define a property with an optional default value that can be replaced via command line, e.g.
<target name="test">
<property name="moduleName" value="default-module" />
<echo message="Testing Module: ${moduleName}"/>
....
</target>
and run it as:
ant test -DmoduleName=ModuleX
What about using some conditional in your test target and the specifying -Dcondition=true?
<target name="test" depends="_test, _test_if_true>
...
</target>
<target name="_test_if_true" if="condition">
...
</target>
<target name="_test" unless="condition">
...
</target>
Adapted a bit from the ant faq.
You can define a property on commandline when invoking ant:
ant -Dtest.module=mymodulename
Then you can use it as any other ant property:
...
<fileset dir="${test.dir}" includes="**/${test.module}.class" />
...
Have a look at Ant's manual.
I tried the solutions posted here for the very same original question. Yes just use ant -D<arg_name>. THe -D is a "keyword" I guess. I'm no ant expert and have not read the manuals in detail. Then inside the ant XML files can be accessed like: ${arg_name}
For instance you can have an argument name like: arg.myarg, so in XML ${arg.myarg}.
Ant really doesn't have parameters_ for the build file. I can think of a few ways to do this:
Use a special target to specify the tests. You can use the <for/> task from AntContrib to allow you to specify multiple tests. You'll need to download the Ant-Contrib jar file. I recommend placing it inside your project under the `${basedir}/antlib/antcontrib" directory. That way, when others checkout your project, they get the needed Ant-Contrib jar file.
<property name="antlib.dir" value="${basedir}/antlib"/>
<property name="antcontrib.dir" value="${antlib}/antcontrib"/>
<!-- Set up the ant contrib tasks for your use -->
<taskdef resource="net/sf/antcontrib/antlib.xml">
<classpath>
<fileset dir="${antcontrib.dir}"/>
</classpath>
</taskdef>
<target name="select-test"
description="Select the tests to run"
depends="test-compile"
if="junit-tests">
<for parameter="module"
list="${junit-tests}"
delimiter=" ">
<sequential>
<junit
fork="true"
...>
<batchtest todir="$target/unit-tests">
<fileset dir="${test.destdir}">
<include name="**/#{module}.class"/>
</fileset>
</junit>
</sequential>
</for>
</target>
You cab now run multiple tests like this:
$ ant -D"test-one test-two test-three" select-test
You could try this to access one target at a time. Add these lines to your build.xml file :
<project name="whatever" default="default">
<input message="Please select module:" addproperty="mod" />
<target name="default" depends="${mod}/>
...
</project>
This allows you to enter the module you want to execute and execute that itself instead of running the whole build.xml
You might need to make a few more changes to your build.xml for this to work perfectly.
For the arguments , there is Facility called property. You need to set the property. As in ANT plain arguments is taken as target name.
Lest say you have two modules in your project ModuleX and ModuleY where ModuleX has 2 testcases to run and ModuleY with 10 testcases.
You could do something like this :
ant runTestsOnModule -Dtestmodule="ModuleX"
OR to test all modules by calling
ant tests
<target name="runTestsOnModule">
<antCall target="testcase${testmodule}"/>
</target>'
<! -- run single module -->
<target name="runTestsOnModule">
<antCall target="testcase${testmodule}"/>
</target>
<!--run all tests-->
<target name="tests">
<antcall target="testcaseModuleX">
<antcall target="testCaseModuleY">
</target>
<target name="testcaseModuleX">
..run junit task to call 2 testcase
</target>
<target name="testcaseModuleY">
....run junit task to call 10 testcase
</target>