/// <summary>
/// Parses the given Content-Type header value to get out actual content type and charset.
/// If the charset isn't specified the default charset for the content type will be set.
/// </summary>
static void parse_content_type_and_charset(const utility::string_t& content_type,
utility::string_t& content,
utility::string_t& charset)
{
const size_t semi_colon_index = content_type.find_first_of(_XPLATSTR(";"));
// No charset specified.
if (semi_colon_index == utility::string_t::npos)
{
content = content_type;
trim_whitespace(content);
charset = get_default_charset(content);
return;
}
// Split into content type and second part which could be charset.
content = content_type.substr(0, semi_colon_index);
trim_whitespace(content);
utility::string_t possible_charset = content_type.substr(semi_colon_index + 1);
trim_whitespace(possible_charset);
const size_t equals_index = possible_charset.find_first_of(_XPLATSTR("="));
// No charset specified.
if (equals_index == utility::string_t::npos)
{
charset = get_default_charset(content);
return;
}
// Split and make sure 'charset'
utility::string_t charset_key = possible_charset.substr(0, equals_index);
trim_whitespace(charset_key);
if (!utility::details::str_iequal(charset_key, _XPLATSTR("charset")))
{
charset = get_default_charset(content);
return;
}
charset = possible_charset.substr(equals_index + 1);
// Remove the redundant ';' at the end of charset.
while (charset.back() == ';')
{
charset.pop_back();
}
trim_whitespace(charset);
if (charset.front() == _XPLATSTR('"') && charset.back() == _XPLATSTR('"'))
{
charset = charset.substr(1, charset.size() - 2);
trim_whitespace(charset);
}
}
std::map<utility::string_t, utility::string_t> uri::split_query(const utility::string_t &query)
{
std::map<utility::string_t, utility::string_t> results;
// Split into key value pairs separated by '&'.
size_t prev_amp_index = 0;
while(prev_amp_index != utility::string_t::npos)
{
size_t amp_index = query.find_first_of(_XPLATSTR('&'), prev_amp_index);
if (amp_index == utility::string_t::npos)
amp_index = query.find_first_of(_XPLATSTR(';'), prev_amp_index);
utility::string_t key_value_pair = query.substr(
prev_amp_index,
amp_index == utility::string_t::npos ? query.size() - prev_amp_index : amp_index - prev_amp_index);
prev_amp_index = amp_index == utility::string_t::npos ? utility::string_t::npos : amp_index + 1;
size_t equals_index = key_value_pair.find_first_of(_XPLATSTR('='));
if(equals_index == utility::string_t::npos)
{
continue;
}
else if (equals_index == 0)
{
utility::string_t value(key_value_pair.begin() + equals_index + 1, key_value_pair.end());
results[_XPLATSTR("")] = value;
}
else
{
utility::string_t key(key_value_pair.begin(), key_value_pair.begin() + equals_index);
utility::string_t value(key_value_pair.begin() + equals_index + 1, key_value_pair.end());
results[key] = value;
}
}
return results;
}