LinkHeader::LinkHeader(CharType*& position, CharType* end)
: m_crossOrigin(CrossOriginAttributeNotSet)
, m_isValid(true)
{
if (!parseURL(position, end, m_url)) {
m_isValid = false;
findNextHeader(position, end);
return;
}
while (m_isValid && position < end) {
if (!parseParameterDelimiter(position, end, m_isValid)) {
findNextHeader(position, end);
return;
}
LinkParameterName parameterName;
if (!parseParameterName(position, end, parameterName)) {
findNextHeader(position, end);
m_isValid = false;
return;
}
String parameterValue;
if (!parseParameterValue(position, end, parameterValue) && !isExtensionParameter(parameterName)) {
findNextHeader(position, end);
m_isValid = false;
return;
}
setValue(parameterName, parameterValue);
}
findNextHeader(position, end);
}
LinkHeader::LinkHeader(CharacterType*& position, CharacterType* const end)
{
ASSERT(position <= end);
auto urlResult = findURLBoundaries(position, end);
if (urlResult == std::nullopt) {
m_isValid = false;
findNextHeader(position, end);
return;
}
m_url = urlResult.value();
while (m_isValid && position < end) {
if (!parseParameterDelimiter(position, end, m_isValid)) {
findNextHeader(position, end);
return;
}
LinkParameterName parameterName;
if (!parseParameterName(position, end, parameterName)) {
findNextHeader(position, end);
m_isValid = false;
return;
}
String parameterValue;
if (!parseParameterValue(position, end, parameterValue) && !isExtensionParameter(parameterName)) {
findNextHeader(position, end);
m_isValid = false;
return;
}
setValue(parameterName, parameterValue);
}
findNextHeader(position, end);
}
static bool parseParameterName(CharType*& position, CharType* end, LinkHeader::LinkParameterName& name)
{
CharType* nameStart = position;
skipWhile<CharType, isValidParameterNameChar>(position, end);
CharType* nameEnd = position;
skipWhile<CharType, isWhitespace>(position, end);
bool hasEqual = skipExactly<CharType>(position, end, '=');
skipWhile<CharType, isWhitespace>(position, end);
name = paramterNameFromString(String(nameStart, nameEnd - nameStart));
if (hasEqual)
return true;
bool validParameterValueEnd = (position == end) || isValidParameterValueEnd(*position);
return validParameterValueEnd && isExtensionParameter(name);
}
