Function scHttpFormatChunkHeader

Libraries/Http/HttpConnection.cpp:66–91

}

static SC::Result scHttpFormatChunkHeader(uint64_t size, SC::Span<char> storage, SC::StringSpan& header)
{
    static constexpr const char HexDigits[] = "0123456789ABCDEF";

    SC_TRY_MSG(storage.sizeInBytes() >= 4, "HttpOutgoingMessage chunk header buffer too small");

    char   reversed[16];
    size_t numDigits = 0;
    do
    {
        reversed[numDigits++] = HexDigits[size & 0xF];
        size >>= 4;
    } while (size > 0 and numDigits < sizeof(reversed));

    SC_TRY_MSG(size == 0, "HttpOutgoingMessage chunk size overflow");
    SC_TRY_MSG(numDigits + 2 <= storage.sizeInBytes(), "HttpOutgoingMessage chunk header buffer too small");

    for (size_t idx = 0; idx < numDigits; ++idx)
    {
        storage[idx] = reversed[numDigits - idx - 1];
    }
    storage[numDigits + 0] = '\r';
    storage[numDigits + 1] = '\n';
    header                 = SC::StringSpan({storage.data(), numDigits + 2}, false, SC::StringEncoding::Ascii);
    return SC::Result(true);
}

static bool scHttpMultipartBoundaryIsSafe(SC::StringSpan value)
{