const char* mtl_content =

"newmtl test\n"

"Pr 0.5\n"

"Pm 0.3\n";

tinyobj::v3::StreamReader reader(mtl_content, strlen(mtl_content));

std::string line;

while (reader.readLine(line, 1024)) {

printf("Line: '%s'\n", line.c_str());

tinyobj::v3::StreamReader line_reader(line.data(), line.size());

std::string cmd;

tinyobj::v3::detail::skipSpaces(line_reader);

if (tinyobj::v3::detail::readWord(line_reader, cmd)) {

printf(" Command: '%s'\n", cmd.c_str());

if (cmd == "Pr") {

float val;

tinyobj::v3::detail::skipSpaces(line_reader);

// Try manual parse

char ch;

if (line_reader.peekChar(ch)) {

printf(" Next char: '%c' (0x%02x)\n", ch, (unsigned char)ch);

}

// Create a minimal parsing context

tinyobj::v3::ParserConfig config;

tinyobj::v3::ObjParser parser(config);

// We can't easily call parseFloat from here without ParseState

// Let's just check what readWord gives us

std::string value_str;

if (tinyobj::v3::detail::readWord(line_reader, value_str)) {

printf(" Value string: '%s'\n", value_str.c_str());

}

}

}

}

return 0;