org.conqat.lib.commons.filesystem.DirectoryContentProvider Maven / Gradle / Ivy
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Provides common utility functions
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/*
* Copyright (c) CQSE GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.conqat.lib.commons.filesystem;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collection;
import org.conqat.lib.commons.assertion.CCSMAssert;
import org.conqat.lib.commons.string.StringUtils;
/**
* {@link PathBasedContentProviderBase} implementation working on directories.
*/
/* package */final class DirectoryContentProvider extends PathBasedContentProviderBase {
/** The base directory. */
private final File baseDir;
/** Constructor. */
public DirectoryContentProvider(File baseDir) {
CCSMAssert.isTrue(baseDir.isDirectory(), "Input file must be a directory!");
this.baseDir = baseDir;
}
/** {@inheritDoc} */
@Override
public Collection getPaths() {
Collection result = new ArrayList<>();
for (File file : FileSystemUtils.listFilesRecursively(baseDir)) {
if (file.isFile()) {
String relative = StringUtils.stripPrefix(file.getPath(), baseDir.getPath());
result.add(StringUtils.stripPrefix(FileSystemUtils.normalizeSeparators(relative), "/"));
}
}
return result;
}
/** {@inheritDoc} */
@Override
public InputStream openStream(String relativePath) throws IOException {
return new FileInputStream(new File(baseDir, relativePath));
}
/** {@inheritDoc} */
@Override
public void close() {
// does nothing
}
}