Merging changes

StevenDimDoors/mod_pocketDim/util/FileFilters.java

@@ -0,0 +1,51 @@
+package StevenDimDoors.mod_pocketDim.util;
+
+import java.io.File;
+import java.io.FileFilter;
+import java.util.regex.Pattern;
+
+public class FileFilters
+{
+	private FileFilters() { }
+	
+	public static class DirectoryFilter implements FileFilter
+	{
+		@Override
+		public boolean accept(File file)
+		{
+			return file.isDirectory();
+		}
+	}
+	
+	public static class FileExtensionFilter implements FileFilter
+	{
+		private final String extension;
+		
+		public FileExtensionFilter(String extension)
+		{
+			this.extension = extension;
+		}
+		
+		@Override
+		public boolean accept(File file)
+		{
+			return file.isFile() && file.getName().endsWith(extension);
+		}
+	}
+	
+	public static class RegexFileFilter implements FileFilter
+	{
+		private final Pattern pattern;
+		
+		public RegexFileFilter(String expression)
+		{
+			this.pattern = Pattern.compile(expression);
+		}
+		
+		@Override
+		public boolean accept(File file)
+		{
+			return file.isFile() && pattern.matcher(file.getName()).matches();
+		}
+	}
+}