Mercurial > repos > timpalpant > java_genomics_toolkit
diff src/edu/unc/genomics/ReadablePathValidator.java @ 2:e16016635b2a
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author | timpalpant |
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date | Mon, 13 Feb 2012 22:12:06 -0500 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/edu/unc/genomics/ReadablePathValidator.java Mon Feb 13 22:12:06 2012 -0500 @@ -0,0 +1,30 @@ +/** + * + */ +package edu.unc.genomics; + +import java.nio.file.Files; +import java.nio.file.Path; + +import com.beust.jcommander.IParameterValidator; +import com.beust.jcommander.ParameterException; + +/** + * @author timpalpant + * + */ +public class ReadablePathValidator implements IParameterValidator { + + /* (non-Javadoc) + * @see com.beust.jcommander.IParameterValidator#validate(java.lang.String, java.lang.String) + */ + @Override + public void validate(String name, String value) throws ParameterException { + PathConverter converter = new PathConverter(); + Path p = converter.convert(value); + if (!Files.isReadable(p)) { + throw new ParameterException("Parameter " + name + " should be a readable file"); + } + } + +}