智能工厂.apk(点击下载) / j.java

package cn.jiguang.ao;

import android.util.Base64;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.regex.Pattern;

public class j {
    public static String a(String str) {
        return new String(Base64.decode(str.getBytes(), 2));
    }

    public static String a(byte[] bArr) {
        if (bArr == null) {
            return "";
        }
        StringBuffer stringBuffer = new StringBuffer(bArr.length * 2);
        for (byte b : bArr) {
            a(stringBuffer, b);
        }
        return stringBuffer.toString();
    }

    private static void a(StringBuffer stringBuffer, byte b) {
        stringBuffer.append("0123456789ABCDEF".charAt((b >> 4) & 15));
        stringBuffer.append("0123456789ABCDEF".charAt(b & 15));
    }

    public static String b(String str) {
        return c(str) ? "" : Pattern.compile("[^\\w#$@\\-一-龥]+").matcher(str).replaceAll("");
    }

    public static boolean c(String str) {
        return str == null || str.length() == 0 || str.trim().length() == 0;
    }

    public static String d(String str) {
        if (str != null && !"".equals(str)) {
            try {
                MessageDigest instance = MessageDigest.getInstance("MD5");
                instance.update(str.getBytes());
                return a(instance.digest());
            } catch (NoSuchAlgorithmException unused) {
            }
        }
        return null;
    }
}