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/*
* 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;
import android.util.Log;
/**
* Wrapper class for an ICC EF containing a bit field of enabled services.
*/
public abstract class IccServiceTable {
protected final byte[] mServiceTable;
protected IccServiceTable(byte[] table) {
mServiceTable = table;
}
// Get the class name to use for log strings
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
Log.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;
}
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();
}
}
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