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<!DOCTYPE task
  PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd">
<task id="GUID-101A11B5-E9A2-4E6D-9D81-9BF76312521D" xml:lang="en"><title>WSP
Header Primitive Decoding</title><shortdesc><codeph>TWspPrimitiveDecoder</codeph> allows decoding the primitive
values of the header. This allows interpreting the encoded header.</shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody>
<steps-unordered>
<step id="GUID-88138F7A-824B-422F-93CE-F3DA473624A1"><cmd/>
<info><p>Call <codeph>String()</codeph>, <codeph>Val7Bit()</codeph>, <codeph>LongInt()</codeph>, <codeph>Integer()</codeph>, <codeph>UIntVar()</codeph>, <codeph>LengthVal()</codeph>, <codeph>Date()</codeph> as appropriate to
get the required byte to which the buffer is currently pointing. Before calling
these functions, check if the data type that is passed to the functions is
one of the type supported by <xref href="GUID-2E4D864D-52DD-3B7A-9B4A-C9382CF2DACE.dita"><apiname>TWspHeaderType</apiname></xref>. To get the
type of the variable, call <codeph>VarType()</codeph>, which returns either <codeph>ELengthVal</codeph>, <codeph>EQuotedString</codeph>, <codeph>EString</codeph> or <codeph>E7BitVal</codeph> of <xref href="GUID-2E4D864D-52DD-3B7A-9B4A-C9382CF2DACE.dita"><apiname>TWspHeaderType</apiname></xref> as appropriate.
If no data type is set to the data it points, the function returns <codeph>ENotSet</codeph>. </p></info>
<stepxmp><codeblock xml:space="preserve">TPtrC8 aBuf;
TWspPrimitiveDecoder dec(aBuf);
TInt length;
// get length in bytes of data 
TInt int = dec.LengthVal(length);</codeblock></stepxmp>
<substeps id="GUID-2BBE7C92-553D-496A-982A-967370AF272F">
<substep id="GUID-C1C8DF08-EFCA-4185-83A4-4FEDDDE587AD"><cmd/>
<info><p>Decode the string value of the header using <codeph>String()</codeph>. </p></info>
<stepxmp><codeblock xml:space="preserve">TPtrC8 aBuf;
TWspPrimitiveDecoder dec(aBuf);
TPtrC8 str;
//get the string that the buffer is pointing to
TInt int = dec.String(str); </codeblock></stepxmp>
</substep>
<substep id="GUID-6F363AF0-AD00-4397-A7EE-ABCF3B0A0BD4"><cmd/>
<info><p>Decode the integer value of the header using <codeph>Integer()</codeph>. </p></info>
<stepxmp><codeblock xml:space="preserve">TPtrC8 aBuf;
TWspPrimitiveDecoder dec(aBuf);
TUint32 val;
// get the integer that the buffer is pointing to
TInt int = dec.Integer(val); </codeblock></stepxmp>
</substep>
<substep id="GUID-B8AB27CC-AE2C-400E-96AF-4030021883F1"><cmd/>
<info><p>Decode the integer value of the header using <codeph>UIntVar()</codeph>. </p></info>
<stepxmp><codeblock xml:space="preserve">TPtrC8 aBuf;
TWspPrimitiveDecoder dec(aBuf);
TUint32 val;
//get the TUint32 value of the header
TUint32 uInt =dec.UintVar(val);  </codeblock></stepxmp>
</substep>
</substeps>
</step>
</steps-unordered>
</taskbody></task>