content: /*
   * Copyright (C) 2011 The Android Open Source Project
   *
   * 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.
   */
  
  package com.android.internal.telephony.uicc;
  
  import android.annotation.UnsupportedAppUsage;
  import android.telephony.Rlog;
  
  /**
   * Wrapper class for an ICC EF containing a bit field of enabled services.
   */
  public abstract class IccServiceTable {
      @UnsupportedAppUsage
      protected final byte[] mServiceTable;
  
      protected IccServiceTable(byte[] table) {
          mServiceTable = table;
      }
  
      // Get the class name to use for log strings
      @UnsupportedAppUsage
      protected abstract String getTag();
  
      // Get the array of enums to use for toString
      protected abstract Object[] getValues();
  
      /**
       * Returns if the specified service is available.
       * @param service the service number as a zero-based offset (the enum ordinal)
       * @return true if the service is available; false otherwise
       */
      protected boolean isAvailable(int service) {
          int offset = service / 8;
          if (offset >= mServiceTable.length) {
              // Note: Enums are zero-based, but the TS service numbering is one-based
              Rlog.e(getTag(), "isAvailable for service " + (service + 1) + " fails, max service is " +
                      (mServiceTable.length * 8));
              return false;
          }
          int bit = service % 8;
          return (mServiceTable[offset] & (1 << bit)) != 0;
      }
  
      @Override
      public String toString() {
          Object[] values = getValues();
          int numBytes = mServiceTable.length;
          StringBuilder builder = new StringBuilder(getTag()).append('[')
                  .append(numBytes * 8).append("]={ ");
  
          boolean addComma = false;
          for (int i = 0; i < numBytes; i++) {
              byte currentByte = mServiceTable[i];
              for (int bit = 0; bit < 8; bit++) {
                  if ((currentByte & (1 << bit)) != 0) {
                      if (addComma) {
                          builder.append(", ");
                      } else {
                          addComma = true;
                      }
                      int ordinal = (i * 8) + bit;
                      if (ordinal < values.length) {
                          builder.append(values[ordinal]);
                      } else {
                          builder.append('#').append(ordinal + 1);    // service number (one-based)
                      }
                  }
              }
          }
          return builder.append(" }").toString();
      }
  }
  