package com.newvideo.util.video;

import java.io.IOException;
import java.io.RandomAccessFile;
import java.security.DigestException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class FeathureUtil {
	private static final char[] a = { 48, 49, 50, 51, 52, 53, 54, 55, 56, 57,
			97, 98, 99, 100, 101, 102 };

	public static String a(String paramString) throws IOException,
			NoSuchAlgorithmException {
		RandomAccessFile paramFile = new RandomAccessFile(paramString, "r");
		long l = paramFile.length();
		MessageDigest localMessageDigest = MessageDigest.getInstance("SHA1");
		if (l < 61440L)
			localMessageDigest.update(paramFile.readByte());
		//while (true) {
			byte[] arrayOfByte = new byte[20480];
			paramFile.read(arrayOfByte);
			localMessageDigest.update(arrayOfByte);
			paramFile.seek(l / 3L);
			paramFile.read(arrayOfByte);
			localMessageDigest.update(arrayOfByte);
			paramFile.seek(l - 20480L);
			paramFile.read(arrayOfByte);
			localMessageDigest.update(arrayOfByte);
		//}
		return String.format("%d_%s", new Object[] { Long.valueOf(l),
				a(localMessageDigest.digest()) });
	}

	private static String a(byte[] paramArrayOfByte) {
		int j = paramArrayOfByte.length;
		StringBuilder localStringBuilder = new StringBuilder(j * 2);
		int i = 0;
		while (i < j) {
			localStringBuilder.append(a[(paramArrayOfByte[i] >> 4 & 0xF)]);
			localStringBuilder.append(a[(paramArrayOfByte[i] & 0xF)]);
			i += 1;
		}
		return localStringBuilder.toString();
	}

	public static String b(String paramString) throws IOException,
			NoSuchAlgorithmException, DigestException {
		RandomAccessFile paramStringFile = new RandomAccessFile(paramString,
				"r");
		long l = paramString.length();
		int i = 262144;
		MessageDigest localMessageDigest1 = MessageDigest.getInstance("SHA1");
		while (l / i > 512L)
			i <<= 1;
		MessageDigest localMessageDigest2 = MessageDigest.getInstance("SHA1");
		byte[] arrayOfByte = new byte[i];
		for (i = paramStringFile.read(arrayOfByte); i > 0; i = paramStringFile
				.read(arrayOfByte)) {
			localMessageDigest2.reset();
			localMessageDigest2.update(arrayOfByte, 0, i);
			localMessageDigest1.update(localMessageDigest2.digest());
		}
		return String.format("%d_%s",
				new Object[] { Long.valueOf(l),
						a(localMessageDigest1.digest()).toLowerCase() });
	}

	public static String sha1(String paramString) throws IOException,
			NoSuchAlgorithmException {
		RandomAccessFile paramStringFile = new RandomAccessFile(paramString,
				"r");
		long l = paramStringFile.length();
		MessageDigest localMessageDigest = MessageDigest.getInstance("SHA1");
		if (l < 65535L)
			localMessageDigest.update(paramStringFile.readByte());
		//while (true) {
			byte[] arrayOfByte = new byte[12288];
			paramStringFile.read(arrayOfByte);
			localMessageDigest.update(arrayOfByte);
			paramStringFile.seek(l / 5L);
			paramStringFile.read(arrayOfByte);
			localMessageDigest.update(arrayOfByte);
			paramStringFile.seek(2L * l / 5L);
			paramStringFile.read(arrayOfByte);
			localMessageDigest.update(arrayOfByte);
			paramStringFile.seek(3L * l / 5L);
			paramStringFile.read(arrayOfByte);
			localMessageDigest.update(arrayOfByte);
			paramStringFile.seek(l - 12288L);
			paramStringFile.read(arrayOfByte);
			localMessageDigest.update(arrayOfByte);
			return String.format("%d_%s", new Object[] { Long.valueOf(l),
					a(localMessageDigest.digest()) });
		//}
	}
}

/*
 * Location: F:\fanbianyi\pptvcloud_classes-dex2jar.jar Qualified Name:
 * com.pptv.cloudplay.utils.FeathureUtil JD-Core Version: 0.6.0
 */