Gradle goodness:unpacking an Archive

To create a archive with Gradle are easy. We have the several tasks like Zip, Tar, Jar, War and Ear to create a new archive. But there was no UnZip or Untar to unpack a archive in Gradle. To unpack an archive we must use the Copy task and copy the contents of the archive to a specified destination directory. In Gradle we can use the zipTree() method to access the contents of a archive. So in our copy definition The source is the contents of the archive we access with the zipTree() method.

In the following build file, we see a simple task to unzip a ZIP file with the name in the dist.zip directory src/dists . We unpack the contents to the directory build/unpacked/dist :

View Sourceprint? 0. task unzip(type: Copy) { 1. def zipFile = file( ‘src/dists/dist.zip‘ ) 2. def outputDir = file( "${buildDir}/unpacked/dist" ) 3.  4. from zipTree(zipFile) 5. into outputDir 6. }

The good thing is, the tasks of type Copy automatically support Gradle ' s incremental build support. This means if the task have been executed once and the file and output in the directory have not a change dist.zip build/unpacked/dist t The He task is up-to-date and isn ' t executed.

We get the following output if we run the task twice:

$ gradle unzip :unzip  BUILD SUCCESSFUL  Total time: 2.867 secs unzip mrhaki$ gradle unzip :unzip UP-TO-DATE  BUILD SUCCESSFUL  Total time: 2.606 secs $

Gradle goodness:unpacking an Archive