All my projects and their versions are defined in a properties file like this:
ProjectNameA=0.0.1
ProjectNameB=1.4.2
I'd like to iterate over all the projects, and use their names and versions in an Ant script.
At present I read the entire file using the property task, then iterate over a given list in a for loop like this:
<for list="ProjectNameA,ProjectNameB" param="project">
<sequential>
<echo message="@{project} has version ${@{project}}" />
</sequential>
</for>
How can I avoid the hard-coding of the project names in the for loop? Basically iterate over each line and extract the name and the version of a project as I go.
Seeing as you're already using antcontrib for
, how about making use of the propertyselector
task:
<property file="properties.txt" prefix="projects."/>
<propertyselector property="projects" match="projects\.(.*)" select="\1"/>
<property file="properties.txt" />
<for list="${projects}" param="project">
...
</for>
The idea here is to read the properties once with the projects
prefix, and use the resulting set of properties to build a comma-separated list of projects with the propertyselector
task. Then the properties are re-read without the prefix, so that your for loop can proceed as before.