gistfile1.cpp

#define BOOST_TEST_MODULE Test1
#include <boost/test/unit_test.hpp>
#include <string>

char IfaceData[]
    = { 23, 0, 0, 0,
        5, 0, 0, 0, 'H', 'e', 'l', 'l', 'o',
        5, 0, 0, 0, 'W', 'o', 'r', 'l', 'd',
        1, 0, 0, 0, '!' };

int32_t * MTEGetString(int32_t * pointer, std::string & result)
{
    int32_t datalen = *pointer;
    char *data = (char *) (pointer + 1);
    result = std::string(data, datalen);
    pointer = (int32_t *)(data + datalen);
    return pointer;
}

// Example buf:
// [5]Hello[5]World[1]!
int32_t* ReadFromBuf(int32_t * pointer)
{
    std::string name, caption, description;
    pointer = MTEGetString(pointer, name);
    pointer = MTEGetString(pointer, caption);
    pointer = MTEGetString(pointer, description);
    // etc
    std::cout << name << std::endl << caption << std::endl << description << std::endl;
    BOOST_CHECK(name == "Hello");
    BOOST_CHECK(caption == "World");
    BOOST_CHECK(description == "!");
    return pointer;
}

typedef struct {
    int32_t  DataLen;
    char     Data[1]; // Allocated inline
} MTEMSG;

BOOST_AUTO_TEST_CASE(read_from_buf)
{
    // MTEMSG *IfaceData;
    // int Interface = MTEStructure2(ConnectionHandle, &IfaceData); // Allocates sizeof(MTEMSG)+DataLen bytes
    // int32_t * pointer = (int32_t *)IfaceData->Data;
    ReadFromBuf((int32_t*)&((MTEMSG*)IfaceData)->Data);
}