Use an include filter:

task unzip(type: Copy) {
from zipTree(zipFile)
into "unzipped"
include "dir/to/unzip/**"
}

Hi Peter thank you this has but this does unzip's but it extracts the all directory tree and not the contents from that given subdirectory.
Say if the contents of the zip where:
/A---+

B---C

D----E

> If the include is "A/D", I was expecting to have only E F In the output

That's not how include works. Ideally, you could achieve your goal with rename. However, rename currently operates on file names rather than file paths. What you can do is to add another copy task/action that copies everything below A/D to a new place. Or, code a solution based on _zipTree(zipFile).visit

_.

Thank you, Peter

Vote++ for a "rename" variant that can operate on full file paths

You can use the `eachFile {}` hook to do this.

task unzip(type: Copy) {
from zipTree(zipFile)
into "unzipped"
eachFile { FileCopyDetails fcp ->
if (fcp.relativePath.pathString.startsWith("dir/to/unzip/")) {
// remap the file to the root
fcp.relativePath = new RelativePath(fcp.file, fcp.relativePath.segments[3..-1])
} else {
fcp.exclude()
}
}
}

That's untested, but it should be pretty close.

docs:

[1]http://www.gradle.org/docs/current/ja...
[2]http://gradle.org/docs/current/dsl/or...
----------------------------------------------------------------------------------------
[1] http://www.gradle.org/docs/current/javadoc/org/gradle/api/file/RelativePath.html
[2] http://gradle.org/docs/current/dsl/org.gradle.api.tasks.Copy.html#org.gradle.api.tasks.Copy:eachFile(groovy.lang.Closure)

@Luke
it is necessary to coerce the segments back into a String Array after removing elements. The code below works but has the unintended side effect of also copying the original directory structure with no files in it. Any thoughts?
eachFile { FileCopyDetails fcp ->
if (fcp.relativePath.pathString.startsWith(appName)) {
// remap the file to the root
def segments = fcp.relativePath.segments
def pathsegments =segments[1..-1] as String[]
fcp.relativePath = new RelativePath(!fcp.file.isDirectory(), pathsegments)
}
else {
fcp.exclude()
}
}

You need to specify to ignore empty dirs:

task unzip(type: Copy) {
...
includeEmptyDirs = false
}

We actually do have directories in the structure that are empty that we would like to unzip. Any Ideas?

This is a limitation of the API. You could keep track of what all the directories will be in the eachFile, and use a `doLast

`.

I'm hitting this same issue. Utility could be improved if the zipTree method took argument for a directory within the archive from which to root the tree. For example:

task unzip(type: Copy) {
from zipTree(zipFile, root: 'directory/in/the/zip/to/consider/as/root')
into destDir
include 'paths/relative/to/root'
}

I encounter this issue almost every time I try to pull a new tool into gradle land. Coming up on 2 years old. Here's how to solve this using Gulp: http://stackoverflow.com/questions/25651264/copy-only-files-inside-a-folder-in-gulp

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+1 I still believe this is a valuable use case.

+1, I do too. I don't understand why it should not be possible except for the extra effort to support it. Currently I typically extract everything and use only parts, wasting a lot of disk space.

For all tracking this, I've made a new GitHub issue at https://github.com/gradle/gradle/issues/1108.