static void
parse_elements (string_view name, TypeDesc type, const char *type_code,
string_view value, ImageIOParameter ¶m)
{
int num_items = type.numelements() * type.aggregate;
T *data = (T*) param.data();
// Erase any leading whitespace
value.remove_prefix (value.find_first_not_of (" \t"));
for (int i = 0; i < num_items; ++i) {
// Make a temporary copy so we for sure have a 0-terminated string.
std::string temp = value;
// Grab the first value from it
sscanf (temp.c_str(), type_code, &data[i]);
// Skip the value (eat until we find a delimiter -- space, comma, tab)
value.remove_prefix (value.find_first_of (" ,\t"));
// Skip the delimiter
value.remove_prefix (value.find_first_not_of (" ,\t"));
if (value.empty())
break; // done if nothing left to parse
}
}
static string ProcessMetasymbols(string_view Str, subst_data& Data)
{
string Result;
Result.reserve(Str.size());
while (!Str.empty())
{
if (Str.front() == L'!')
{
Str = ProcessMetasymbol(Str, Data, Result);
}
else
{
Result.push_back(Str.front());
Str.remove_prefix(1);
}
}
return Result;
}
void ltrim(string_view& s) noexcept
{
const auto pos = s.find_first_not_of(Space);
s.remove_prefix(pos != string_view::npos ? pos : s.size());
}
// Add the attribute -- figure out the type
void
parse_param(string_view paramname, string_view val, ImageSpec& spec)
{
TypeDesc type; // start out unknown
// If the param string starts with a type name, that's what it is
if (size_t typeportion = type.fromstring(paramname)) {
paramname.remove_prefix(typeportion);
Strutil::skip_whitespace(paramname);
}
// If the value string starts with a type name, that's what it is
else if (size_t typeportion = type.fromstring(val)) {
val.remove_prefix(typeportion);
Strutil::skip_whitespace(val);
}
if (type.basetype == TypeDesc::UNKNOWN) {
// If we didn't find a type name, try to guess
if (val.size() >= 2 && val.front() == '\"' && val.back() == '\"') {
// Surrounded by quotes? it's a string (strip off the quotes)
val.remove_prefix(1);
val.remove_suffix(1);
type = TypeDesc::TypeString;
} else if (Strutil::string_is<int>(val)) {
// Looks like an int, is an int
type = TypeDesc::TypeInt;
} else if (Strutil::string_is<float>(val)) {
// Looks like a float, is a float
type = TypeDesc::TypeFloat;
} else {
// Everything else is assumed a string
type = TypeDesc::TypeString;
}
}
// Read the values and set the attribute
int n = type.numelements() * type.aggregate;
if (type.basetype == TypeDesc::INT) {
std::vector<int> values(n);
for (int i = 0; i < n; ++i) {
Strutil::parse_int(val, values[i]);
Strutil::parse_char(val, ','); // optional
}
if (n > 0)
spec.attribute(paramname, type, &values[0]);
}
if (type.basetype == TypeDesc::FLOAT) {
std::vector<float> values(n);
for (int i = 0; i < n; ++i) {
Strutil::parse_float(val, values[i]);
Strutil::parse_char(val, ','); // optional
}
if (n > 0)
spec.attribute(paramname, type, &values[0]);
} else if (type.basetype == TypeDesc::STRING) {
std::vector<ustring> values(n);
for (int i = 0; i < n; ++i) {
string_view v;
Strutil::parse_string(val, v);
Strutil::parse_char(val, ','); // optional
values[i] = v;
}
if (n > 0)
spec.attribute(paramname, type, &values[0]);
}
}