Function ExtractScheme

IO/Core/vtkURI.cxx:58–72

The following functions extract one component and return an iterator one-past last component character They must be called in the right order to ensure coherency Scheme -> Authority -> Path -> Query -> Fragment

// They must be called in the right order to ensure coherency
// Scheme -> Authority -> Path -> Query -> Fragment
const char* ExtractScheme(const char* uri, const char* end, vtkURIComponent& output)
{
  const auto schemeEnd = std::find_if_not(uri, end,
    [](char c)
    { return std::isalnum(static_cast<unsigned char>(c)) || c == '+' || c == '-' || c == '.'; });

  if (schemeEnd == end || *schemeEnd != ':')
  {
    return uri; // not a scheme
  }

  output = std::string{ uri, schemeEnd };

  return schemeEnd + 1;
}

const char* ExtractAuthority(const char* uri, const char* end, vtkURIComponent& output)
{