Re: [gradle-user] built-in unzip support for zip and tar.gz

[Adam Murdoch]

On 12/01/10 1:26 PM, RenŽé Gröschke wrote:
Hi there,
I know there was a discussion going on to improve the file handling of 
gradle including archive extracting stuff. Is there already an easy 
built-in way to extract a tar.gz and/or a "normal" zip file? This is 
an exercise for the copyspec isn't it? Unfortunately I'm not familiar 
with this copyspec stuff yet.


You can use the zipFile() and tarFile() methods. These return FileTree 
impls which will iterate over the contents of a ZIP or TAR file, 
respectively.

Then, depending on what you want to do, you can:

- Use the FileTree API to, for example, iterate over each file in the 
ZIP/TAR:

zipFile('someFile.zip').each { file -> println "doing something with 
$file" }
zipFile('someFile.zip').visit { fte -> println "visiting entry $fte.name" }

- Pass the tree to the Copy task or method to extract the ZIP/TAR into a 
directory:

copy {
    from zipFile('someFile.zip')
    into 'some-dir'
}

- Pass the tree to any task which accepts a 
FileTree/FileCollection/Iterable<File>:

compile {
    source zipFile('someFile.zip')
}

jar {
    from zipFile('someFile.zip')
}

There's some material on this stuff in the user guide in trunk. I would 
link to it, but the nightly build broke last night, so the latest user 
guide isn't up available at the moment.


Finally, you should note, that the tarFile() method doesn't deal with 
compressed tar files (ie .tar.gz) at the moment. It will be able to 
before the 0.9 release.


--
Adam Murdoch
Gradle Developer
http://www.gradle.org


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