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ysb33r/RelativePath.groovy

Last active November 4, 2022 14:18
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The Groovy way to obtain a relative path given two paths.
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RelativePath.groovy
def root= new File('/usr/share')
def full= new File('/usr/share/docs/rpm-4.4')
// Print the relative path of 'full' in relation to 'root'
// Notice that the full path is passed as a parameter to the root.
def relPath= new File( root.toURI().relativize( full.toURI() ).toString() )
@akhikhl
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akhikhl commented May 25, 2015

little error: "def relPath". Thanks for a nice snippet!

@ysb33r
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ysb33r commented Jul 24, 2015

Thanks @akhikhl, I've corre ted it now.

@jgustie
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jgustie commented Jun 9, 2016

Using URI is dangerous here because of the encoding (e.g. if full were /usr/share/docs with space/rpm-4.4 you end up with docs%20with%20space/rpm-4.4). You can use the Path.relativize from Java 7 to avoid this:

def relPath = root.toPath().relativize( full.toPath() ).toFile()

@ysb33r
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ysb33r commented Jul 7, 2016

@jgustie - Thx for that.

@retraut
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retraut commented Jul 6, 2020

hudson.remoting.ProxyException: groovy.lang.MissingMethodException: No signature of method: java.lang.String.toPath() is applicable

@figroc
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figroc commented Jul 18, 2020 •
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hudson.remoting.ProxyException: groovy.lang.MissingMethodException: No signature of method: java.lang.String.toPath() is applicable

It is File::toPath, not String::toPath.

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