Method read

src/OpenColorIO/fileformats/FileFormatSpi1D.cpp:95–460

// Raise an exception if it can't be loaded.

CachedFileRcPtr LocalFileFormat::read(std::istream & istream,
                                      const std::string & /*fileName*/,
                                      Interpolation interp) const
{
    // Parse Header Info.
    int lut_size = -1;
    float from_min = 0.0;
    float from_max = 1.0;
    int version = -1;
    int components = -1;

    const int MAX_LINE_SIZE = 4096;
    char lineBuffer[MAX_LINE_SIZE];
    int currentLine = 0;

    // PARSE HEADER INFO
    {
        std::string headerLine("");
        do
        {
            istream.getline(lineBuffer, MAX_LINE_SIZE);
            ++currentLine;
            headerLine = std::string(lineBuffer);

            if(StringUtils::StartsWith(headerLine, "Version"))
            {
                // " " in format means any number of spaces (white space,
                // new line, tab) including 0 of them.
                // "Version1" is valid.
                if (sscanf(lineBuffer, "Version %d", &version) != 1)
                {
                    ThrowErrorMessage("Invalid 'Version' Tag", currentLine, headerLine);
                }
                else if (version != 1)
                {
                    ThrowErrorMessage("Only format version 1 supported", currentLine, headerLine);
                }
            }
            else if(StringUtils::StartsWith(headerLine, "From"))
            {
                char fromMinS[64] = "";
                char fromMaxS[64] = "";
#ifdef _WIN32
                if (sscanf_s(lineBuffer, "From %63s %63s", fromMinS, 64, fromMaxS, 64) != 2)
#else
                if (sscanf(lineBuffer, "From %63s %63s", fromMinS, fromMaxS) != 2)
#endif
                {
                    ThrowErrorMessage("Invalid 'From' Tag", currentLine, headerLine);
                }
                else
                {
                    const auto fromMinAnswer = NumberUtils::from_chars(fromMinS, fromMinS + 64, from_min);
                    const auto fromMaxAnswer = NumberUtils::from_chars(fromMaxS, fromMaxS + 64, from_max);

                    if (fromMinAnswer.ec != std::errc() || fromMaxAnswer.ec != std::errc())
                    {
                        ThrowErrorMessage("Invalid 'From' Tag", currentLine, headerLine);