File	Doc	Category	Size	Date	Package
ComprehensionTlv.java	API Doc	Android 5.1 API	7160	Thu Mar 12 22:22:54 GMT 2015	com.android.internal.telephony.cat

ComprehensionTlv

• java.lang.Object

Fields Summary
private static final String	LOG_TAG
private int	mTag
private boolean	mCr
private int	mLength
private int	mValueIndex
private byte[]	mRawValue

Constructors Summary

protected ComprehensionTlv(int tag, boolean cr, int length, byte[] data, int valueIndex) Constructor. Private on purpose. Use {@link #decodeMany(byte[], int) decodeMany} or {@link #decode(byte[], int) decode} method. param tag The tag for this object param cr Comprehension Required flag param length Length of the value param data Byte array containing the value param valueIndex Index in data at which the value starts mTag = tag; mCr = cr; mLength = length; mValueIndex = valueIndex; mRawValue = data;

Methods Summary
public static com.android.internal.telephony.cat.ComprehensionTlv	decode(byte[] data, int startIndex) Parses an COMPREHENSION-TLV object from a byte array. param data A byte array containing data to be parsed param startIndex Index in data at which to start parsing return A COMPREHENSION-TLV object parsed throws ResultException int curIndex = startIndex; int endIndex = data.length; try { /* tag */ int tag; boolean cr; // Comprehension required flag int temp = data[curIndex++] & 0xff; switch (temp) { case 0: case 0xff: case 0x80: Rlog.d("CAT ", "decode: unexpected first tag byte=" + Integer.toHexString(temp) + ", startIndex=" + startIndex + " curIndex=" + curIndex + " endIndex=" + endIndex); // Return null which will stop decoding, this has occurred // with Ghana MTN simcard and JDI simcard. return null; case 0x7f: // tag is in three-byte format tag = ((data[curIndex] & 0xff) << 8) | (data[curIndex + 1] & 0xff); cr = (tag & 0x8000) != 0; tag &= ~0x8000; curIndex += 2; break; default: // tag is in single-byte format tag = temp; cr = (tag & 0x80) != 0; tag &= ~0x80; break; } /* length */ int length; temp = data[curIndex++] & 0xff; if (temp < 0x80) { length = temp; } else if (temp == 0x81) { length = data[curIndex++] & 0xff; if (length < 0x80) { throw new ResultException( ResultCode.CMD_DATA_NOT_UNDERSTOOD, "length < 0x80 length=" + Integer.toHexString(length) + " startIndex=" + startIndex + " curIndex=" + curIndex + " endIndex=" + endIndex); } } else if (temp == 0x82) { length = ((data[curIndex] & 0xff) << 8) | (data[curIndex + 1] & 0xff); curIndex += 2; if (length < 0x100) { throw new ResultException( ResultCode.CMD_DATA_NOT_UNDERSTOOD, "two byte length < 0x100 length=" + Integer.toHexString(length) + " startIndex=" + startIndex + " curIndex=" + curIndex + " endIndex=" + endIndex); } } else if (temp == 0x83) { length = ((data[curIndex] & 0xff) << 16) | ((data[curIndex + 1] & 0xff) << 8) | (data[curIndex + 2] & 0xff); curIndex += 3; if (length < 0x10000) { throw new ResultException( ResultCode.CMD_DATA_NOT_UNDERSTOOD, "three byte length < 0x10000 length=0x" + Integer.toHexString(length) + " startIndex=" + startIndex + " curIndex=" + curIndex + " endIndex=" + endIndex); } } else { throw new ResultException(ResultCode.CMD_DATA_NOT_UNDERSTOOD, "Bad length modifer=" + temp + " startIndex=" + startIndex + " curIndex=" + curIndex + " endIndex=" + endIndex); } return new ComprehensionTlv(tag, cr, length, data, curIndex); } catch (IndexOutOfBoundsException e) { throw new ResultException(ResultCode.CMD_DATA_NOT_UNDERSTOOD, "IndexOutOfBoundsException" + " startIndex=" + startIndex + " curIndex=" + curIndex + " endIndex=" + endIndex); }
public static java.util.List	decodeMany(byte[] data, int startIndex) Parses a list of COMPREHENSION-TLV objects from a byte array. param data A byte array containing data to be parsed param startIndex Index in data at which to start parsing return A list of COMPREHENSION-TLV objects parsed throws ResultException ArrayList<ComprehensionTlv> items = new ArrayList<ComprehensionTlv>(); int endIndex = data.length; while (startIndex < endIndex) { ComprehensionTlv ctlv = ComprehensionTlv.decode(data, startIndex); if (ctlv != null) { items.add(ctlv); startIndex = ctlv.mValueIndex + ctlv.mLength; } else { CatLog.d(LOG_TAG, "decodeMany: ctlv is null, stop decoding"); break; } } return items;
public int	getLength() return mLength;
public byte[]	getRawValue() return mRawValue;
public int	getTag() return mTag;
public int	getValueIndex() return mValueIndex;
public boolean	isComprehensionRequired() return mCr;