lsl_base64_floats.cpp

#include "linden_common.h"
#include "lscript_library.h"
#include "llbase64.h"
#include <cstring>  // For memcpy
#include <netinet/in.h>  // For htonl

void llFloatToBase64(LLScriptLibData *retval, LLScriptLibData *args, const LLUUID &id)
{
    retval->mType = LST_STRING;

    F32 floatval = args[0].mFP;
    uint32_t value;
    memcpy(&value, &floatval, sizeof(floatval));

    value = htonl(value);

    std::string binary(4, '\0');
    binary[0] = (value >> 24) & 0xFF;
    binary[1] = (value >> 16) & 0xFF;
    binary[2] = (value >> 8) & 0xFF;
    binary[3] = value & 0xFF;

    std::string encoded = LLBase64::encode(binary);

    retval->mString = strdup(encoded.c_str());
}

void llBase64ToFloat(LLScriptLibData *retval, LLScriptLibData *args, const LLUUID &id)
{
    retval->mType = LST_FLOATINGPOINT;
    std::string decoded = LLBase64::decode(args[0].mString);

    if (decoded.size() < 4)
    {
        retval->mFP = 0;
        return;
    }

    int value = (static_cast<unsigned char>(decoded[0]) << 24) |
                (static_cast<unsigned char>(decoded[1]) << 16) |
                (static_cast<unsigned char>(decoded[2]) << 8)  |
                (static_cast<unsigned char>(decoded[3]));

    value = htonl(value);

    memcpy(&(retval->mFP), &value, sizeof(retval->mFP));
}