phoenix_varint.cpp File Reference

#include "phoenix_varint.h"

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Functions
size_t	phoenix_readVarInt (char *&iter)
	Reads and print a varint from protocol buffer.
void	phoenix_skipVarInt (char *&iter)
	Skips a varint.
size_t	phoenix_varIntToValue (const std::vector< uint8_t > &vecBitSize)
	Convert a varint into a value.

Function Documentation

phoenix_readVarInt()

size_t phoenix_readVarInt

(

char *&

iter

)

Reads and print a varint from protocol buffer.

Parameters

[out]

iter

: position on the current message to be used

Returns

value of the varint

Definition at line 29 of file phoenix_varint.cpp.

                                       {
        std::vector<uint8_t> vecBitSize;
        bool isExtraByte(false);
        do{
                char packedSizeVal = *iter;
                uint8_t val = packedSizeVal & 127;
                vecBitSize.push_back(val);      //Get the first 7 bytes
                isExtraByte = packedSizeVal & 128;      //Get only the strong bit
                iter += 1lu;
        }while(isExtraByte);
        return phoenix_varIntToValue(vecBitSize);
}

References phoenix_varIntToValue().

Referenced by FieldParser::loadComputeFieldOffset(), FieldParser::loadComputeFieldOffsetArray(), FieldParser::loadFieldFromOffset(), phoenix_fieldPrint(), phoenix_fieldPrintArray(), and phoenix_fieldSkip().

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phoenix_skipVarInt()

void phoenix_skipVarInt

(

char *&

iter

)

Skips a varint.

Parameters

[out]

iter

: iterator over the message to be used

Definition at line 45 of file phoenix_varint.cpp.

                                     {
        bool isExtraByte(false);
        do{
                char packedSizeVal = *iter;
                isExtraByte = packedSizeVal & 128;      //Get only the strong bit
                iter += 1lu;
        }while(isExtraByte);
}

Referenced by phoenix_fieldSkip().

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phoenix_varIntToValue()

size_t phoenix_varIntToValue

(

const std::vector< uint8_t > &

vecBitSize

)

Convert a varint into a value.

Parameters

vecBitSize

: vector of bytes

Returns

converted value

Definition at line 15 of file phoenix_varint.cpp.

                                                                   {
        size_t res(0lu), factor(1lu), nbByte(vecBitSize.size());
        for(size_t i(0lu); i < nbByte; ++i){
                size_t value(vecBitSize[i]);
                res += value * factor;
                factor *= 128lu;
        }
        return res;
}

Referenced by phoenix_readVarInt().

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