filebot/source/net/sourceforge/tuned/FileUtil.java

127 lines
2.4 KiB
Java

package net.sourceforge.tuned;
import java.io.File;
public final class FileUtil {
public final static long KILO = 1024;
public final static long MEGA = KILO * 1024;
public final static long GIGA = MEGA * 1024;
public static String formatSize(long size) {
if (size >= MEGA)
return String.format("%,d MB", size / MEGA);
else if (size >= KILO)
return String.format("%,d KB", size / KILO);
else
return String.format("%,d Byte", size);
}
public static boolean hasExtension(File file, String... extensions) {
if (file.isDirectory())
return false;
return hasExtension(file.getName(), extensions);
}
public static boolean hasExtension(String filename, String... extensions) {
String extension = getExtension(filename, false);
for (String ext : extensions) {
if (ext.equalsIgnoreCase(extension))
return true;
}
return false;
}
public static String getExtension(File file) {
return getExtension(file, false);
}
public static String getExtension(File file, boolean includeDot) {
return getExtension(file.getName(), includeDot);
}
public static String getExtension(String name, boolean includeDot) {
int dotIndex = name.lastIndexOf(".");
// .config -> no extension, just hidden
if (dotIndex >= 1) {
int startIndex = dotIndex;
if (!includeDot)
startIndex += 1;
if (startIndex <= name.length()) {
return name.substring(startIndex, name.length());
}
}
return "";
}
public static String getNameWithoutExtension(String name) {
int dotIndex = name.lastIndexOf(".");
if (dotIndex < 1)
return name;
return name.substring(0, dotIndex);
}
public static String getFileName(File file) {
if (file.isDirectory())
return getFolderName(file);
return getNameWithoutExtension(file.getName());
}
public static String getFolderName(File file) {
String name = file.getName();
if (!name.isEmpty())
return name;
// file might be a drive (only has a path, but no name)
return file.toString();
}
public static String getFileType(File file) {
if (file.isDirectory())
return "Folder";
String extension = getExtension(file.getName(), false);
if (!extension.isEmpty())
return extension;
// some file with no suffix
return "File";
}
/**
* Dummy constructor to prevent instantiation.
*/
private FileUtil() {
throw new UnsupportedOperationException();
}
}