removes Arabic diacritics (tashkeel تشكيل) from any file almost instantly.

RemoveTashkeel.java

Copyright 2017 mhashim6(Muhammad Hashim)

   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.

import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

/**
created by mhashim6 (Muhammad Hashim) on 26/06/2017
*/
public class RemoveTashkeel {

	//Unicode values of Tashkeel
	private final static char[] tashkeel  = { (char) Integer.parseInt("064F", 16), (char) Integer.parseInt("0650", 16),
		(char) Integer.parseInt("0651", 16), (char) Integer.parseInt("0652", 16),
		(char) Integer.parseInt("064B", 16), (char) Integer.parseInt("064C", 16),
		(char) Integer.parseInt("064D", 16), (char) Integer.parseInt("064E", 16) };

	public static void main(String[] args) {
		
		if (args.length != 2){
			System.out.println("Usage:\njava -Dfile.encoding=UTF-8 RemoveTashkeel sourceFile targetFile\n");
			System.exit(1);
		}

		//check if sourceFile exists
		File sourceFile = new File(args[0]);
		if (!sourceFile.exists()) {
			System.out.println(args[0] + " doesn't exist.\nterminated.\n\n");
			System.exit(2);
		}
		long start = System.currentTimeMillis();
		removeTashkeel(args[0], args[1]);
		long end = System.currentTimeMillis();
		System.out.printf("\nTime taken: %d ms.\n", (end - start));
	}

	private static void removeTashkeel(String in, String out) {
		FileReader reader = null;	
		FileWriter writer = null;
		
		try {
			reader = new FileReader(in);
			writer = new FileWriter(out);

			//traverse each character
			int c;
			while ((c = reader.read()) != -1)
			if (!isTashkeel((char) c))
			writer.append((char) c);
			System.out.println("\n-----PROCESS FINISHED SUCCESSFULLY!");
		}
		catch (Exception e) {
			System.out.println("\n-----AN ERROR OCCURED:");
			e.printStackTrace();
		}
		finally {
			try {
				reader.close();
				writer.flush();
				writer.close();
			}
			catch (IOException e) {
				System.out.println("ERROR WHILE FLUSHING/CLOSING FILES:\n\n");
				e.printStackTrace();
			}
		}
	}

	public static boolean isTashkeel(char c) {
		for (int i = 0; i < tashkeel.length; i++) {
			if (c == tashkeel[i]) { return true; }
		}
		return false;
	}

}

The word (كِتَابٌ) becomes (كتاب).

How-To:

• copy the text in a new File named RemoveTashkeel.java
• compile using:
  javac RemoveTashkeel.java
• run the code using:
  java -Dfile.encoding=UTF-8 RemoveTashkeel sourceFile targetFile

this code is used in Open-Hadith-Data-Project