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FileSystemNode.java
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FileSystemNode.java
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package design_pattern.structural.composite;
import com.google.common.collect.Lists;
import java.io.File;
import java.util.List;
/**
* @author chenyuqun
*/
public class FileSystemNode {
private String path;
private boolean isFile;
private List<FileSystemNode> subNodes = Lists.newArrayList();
public FileSystemNode(String path, boolean isFile) {
this.path = path;
this.isFile = isFile;
}
public int countNumOfFiles() {
if (isFile) {
return 1;
}
int numOfFiles = 0;
for (FileSystemNode fileOrDir : subNodes) {
numOfFiles += fileOrDir.countNumOfFiles();
}
return numOfFiles;
}
public long countSizeOfFiles() {
if (isFile) {
File file = new File(path);
if (!file.exists()) {
return 0;
} else {
return file.length();
}
}
long sizeOfFiles = 0;
for(FileSystemNode fileOrDir : subNodes) {
sizeOfFiles += fileOrDir.countSizeOfFiles();
}
return sizeOfFiles;
}
public void removeSubNode(FileSystemNode fileOrDir) {
int size = subNodes.size();
int i = 0;
for (; i < size; i++) {
if (subNodes.get(i).getPath().equalsIgnoreCase(fileOrDir.getPath())) {
break;
}
}
if (i < size) {
subNodes.remove(i);
}
}
public void addSubNode(FileSystemNode fileOrDir) {
subNodes.add(fileOrDir);
}
public String getPath() {
return path;
}
}