Add a FTPClient.listFiles(FTPFileFilter) method
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Key: NET-244
URL: https://issues.apache.org/jira/browse/NET-244
Project: Commons Net
Issue Type: New Feature
Affects Versions: 2.0
Reporter: Matt Lachman
Priority: Minor
It would be nice if there was a way to list *only* those files I'm interested
in. I've had to write a loop a couple of times to figure out which files had
the right naming conventions. If the API handled that for me, I would have
less boilerplate code to write.
I would attach a patch but as of this time I cannot download the source due to
an internal server error.
I was imagining the introduction of a new interface
{{org.apache.commons.net.ftp.FTPFileFilter}} that would be analogous to
[java.io.FileFilter|http://java.sun.com/javase/6/docs/api/java/io/FileFilter.html]:
{code}
package org.apache.commons.net.ftp;
public interface FTPFileFilter {
public boolean accept(FTPFile file);
}
{code}
A new method on FTPClient would need to be created to support it. Here's a
code sample using API calls:
{code}
public FTPFile[] listFiles(FTPFileFilter filter) throws IOException {
FTPFile files = listFIles();
List<FTPFile> fileList = new ArrayList<FTPFile>(files.length);
for (FTPFile file : files) {
if (filter.accept(file)) {
fileList.add(file);
}
}
return fileList.toArray(new FTPFile[fileList.size()]);
}
{code}
See
[java.io.File.listFiles(java.io.FileFilter)|http://java.sun.com/javase/6/docs/api/java/io/File.html#listFiles(java.io.FileFilter)]
for comparison.
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