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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.core.utilities.file;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.collections4.MapUtils;
/**
* Stores the content of files in a path:byte[] structure
*/
public class FileContentHandler {
private final Map<String, byte[]> files = new HashMap<>();
public FileContentHandler() {
}
public FileContentHandler(final FileContentHandler other) {
addAll(other);
}
/**
* Gets file content as stream.
*
* @param fileName the file name
* @return if the file was found, its content as stream, otherwise {@code null}.
*/
public InputStream getFileContentAsStream(final String fileName) {
byte[] content = files.get(fileName);
if (content == null || content.length == 0) {
return null;
}
return new ByteArrayInputStream(content);
}
/**
* Gets the content of a file.
*
* @param filePath the file path
* @return the content of the file
*/
public byte[] getFileContent(final String filePath) {
return files.get(filePath);
}
/**
* Checks if the path is a folder.
*
* @param filePath the file path to verify
* @return {@code true} if the path is a folder, {@code false} otherwise
*/
public boolean isFolder(final String filePath) {
return files.get(filePath) == null;
}
/**
* Checks if the path is a file.
*
* @param filePath the file path to verify
* @return {@code true} if the path is a file, {@code false} otherwise
*/
public boolean isFile(final String filePath) {
return files.get(filePath) != null;
}
/**
* Adds a folder.
*
* @param folderPath the folder path to add
*/
public void addFolder(final String folderPath) {
files.put(folderPath, null);
}
/**
* Adds a file.
*
* @param filePath the file path
* @param content the file content
*/
public void addFile(final String filePath, final byte[] content) {
files.put(filePath, content == null ? new byte[0] : content);
}
/**
* Adds a file.
*
* @param filePath the file path
* @param fileInputStream the file input stream
*/
public void addFile(final String filePath, final InputStream fileInputStream) {
files.put(filePath, FileUtils.toByteArray(fileInputStream));
}
/**
* Gets only the files, ignoring directories from the structure.
*
* @return a file path:content map
*/
public Map<String, byte[]> getFiles() {
return files.entrySet().stream().filter(entry -> entry.getValue() != null)
.collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
}
public void setFiles(final Map<String, byte[]> files) {
addAll(files);
}
/**
* Gets only the file paths, ignoring directories from the structure.
*
* @return a set of the file paths
*/
public Set<String> getFileList() {
return files.keySet().stream().filter(this::isFile).collect(Collectors.toSet());
}
/**
* Gets only the folder paths, ignoring files from the structure.
*
* @return a set of the folder paths
*/
public Set<String> getFolderList() {
return files.keySet().stream().filter(this::isFolder).collect(Collectors.toSet());
}
public void addAll(final FileContentHandler fileContentHandlerOther) {
if (CollectionUtils.isNotEmpty(fileContentHandlerOther.getFolderList())) {
fileContentHandlerOther.getFolderList().forEach(this::addFolder);
}
addAll(fileContentHandlerOther.getFiles());
}
private void addAll(final Map<String, byte[]> files) {
if (!MapUtils.isEmpty(files)) {
files.forEach(this::addFile);
}
}
/**
* Checks if the file structure is empty.
*
* @return {@code true} if the file structure is empty, {@code false} otherwise
*/
public boolean isEmpty() {
return MapUtils.isEmpty(this.files);
}
/**
* Removes a file or folder from the file structure.
*
* @param filePath the file path to remove
* @return the removed file content
*/
public byte[] remove(final String filePath) {
return files.remove(filePath);
}
/**
* Checks if the file structure contains the provided file.
*
* @param filePath the file path to search
* @return {@code true} if the file exists, {@code false} otherwise
*/
public boolean containsFile(final String filePath) {
return files.containsKey(filePath);
}
}
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