private static void pack(TLVElement element)
{
if (element.Value.Length > MaxLength)
{
throw new Exception("值长度过长");
}
byte[] result = element.Value;
if (element.mTLVDef != null)
{
int totalLength = element.Value.Length;
if (element.mTLVDef.LengthType == TLVDef.LengthFormat.Fix && element.mTLVDef.Length > element.Value.Length)
{
totalLength = element.mTLVDef.Length;
}
else if (element.mTLVDef.ValueType == TLVDef.DataType.B && element.Value.Length % 2 != 0)
{
totalLength += 1;
}
if (totalLength != element.Value.Length)
{
char padChar = '\0';
switch (element.mTLVDef.Padchar)
{
case TLVDef.PadType.Space:
padChar = ' ';
break;
case TLVDef.PadType.Zero:
padChar = '0';
break;
}
string padStr = new string(padChar, totalLength - element.Value.Length);
result = new byte[totalLength];
if (element.mTLVDef.Align == TLVDef.AlignType.Left)
{
Array.Copy(element.Value, result, element.Value.Length);
Array.Copy(Encoding.Default.GetBytes(padStr), 0, result, element.Value.Length, padStr.Length);
}
else
{
Array.Copy(Encoding.Default.GetBytes(padStr), result, padStr.Length);
Array.Copy(element.Value, 0, result, padStr.Length, element.Value.Length);
}
}
if (element.mTLVDef.ValueType == TLVDef.DataType.B)
{
result = Utility.str2Bcd(Encoding.Default.GetString(result));
}
}
element.Value = result;
element.ValueLength = result.Length;
element.TotalLength = element.Tag.Length + CalcLength(result) + element.ValueLength;
}
public void ParseTLV(byte[] content)
{
Dictionary <string, byte[]> result = new Dictionary <string, byte[]>();
ParseTLV(content, result);
mTags.Clear();
foreach (KeyValuePair <string, byte[]> tmp in result)
{
TLVElement element = new TLVElement(tmp.Key, tmp.Value, getTLVDefByTag(tmp.Key), false);
element.UnPack();
mTags.Add(tmp.Key, element);
}
}
private static void unPack(TLVElement element)
{
if (element.Value.Length > MaxLength)
{
throw new Exception("值长度过长");
}
byte[] result = element.Value;
if (element.mTLVDef != null)
{
if (element.mTLVDef.ValueType == TLVDef.DataType.B)
{
result = Encoding.Default.GetBytes(Utility.bcd2str(element.Value, element.Value.Length));
}
}
element.Value = result;
element.ValueLength = result.Length;
element.TotalLength = element.Tag.Length + CalcLength(result) + element.ValueLength;
}