FileInspector 추가

src/main/java/cokr/xit/base/file/FileInspector.java

@@ -0,0 +1,44 @@
+package cokr.xit.base.file;
+
+import java.io.File;
+import java.net.URLConnection;
+import java.util.List;
+import java.util.stream.Stream;
+
+import cokr.xit.foundation.AbstractComponent;
+import cokr.xit.foundation.data.DataObject;
+
+public class FileInspector extends AbstractComponent {
+	private DataObject getInfo(File file) {
+		String name = file.getName(),
+			   type = file.isDirectory() ? "dir" : file.isFile() ? "file" : "unknown";
+		return new DataObject()
+			.set("name", name)
+			.set("path", file.getPath())
+			.set("parent", file.getParent())
+			.set("length", file.length())
+			.set("type", type)
+			.set("mimeType", URLConnection.guessContentTypeFromName(name));
+	}
+
+	private File getDir(String path) {
+		File dir = new File(path);
+		if (!dir.exists())
+			throw new RuntimeException(path + " does not exist");
+		if (!dir.isDirectory())
+			throw new RuntimeException(path + " is not a directory");
+
+		return dir;
+	}
+
+	public List<DataObject> getDirList(String path) {
+		File dir = getDir(path);
+		File[] subs = dir.listFiles(File::isDirectory);
+		return Stream.of(subs).map(this::getInfo).toList();
+	}
+
+	public List<DataObject> getFileList(String dir) {
+		File[] files = getDir(dir).listFiles(File::isFile);
+		return Stream.of(files).map(this::getInfo).toList();
+	}
+}