std::string CHttpHeader::GetValue(const std::string& strParam) const
{
std::string paramLower(strParam);
StringUtils::ToLower(paramLower);
return GetValueRaw(paramLower);
}
std::string CHttpHeader::GetMimeType(void) const
{
std::string strValue(GetValueRaw("content-type"));
std::string mimeType(strValue, 0, strValue.find(';'));
StringUtils::TrimRight(mimeType, m_whitespaceChars);
return mimeType;
}
std::string CHttpHeader::GetCharset(void) const
{
std::string strValue(GetValueRaw("content-type"));
if (strValue.empty())
return strValue;
StringUtils::ToUpper(strValue);
const size_t len = strValue.length();
// extract charset value from 'contenttype/contentsubtype;pram1=param1Val ; charset=XXXX\t;param2=param2Val'
// most common form: 'text/html; charset=XXXX'
// charset value can be in double quotes: 'text/xml; charset="XXX XX"'
size_t pos = strValue.find(';');
while (pos < len)
{
// move to the next non-whitespace character
pos = strValue.find_first_not_of(m_whitespaceChars, pos + 1);
if (pos != std::string::npos)
{
if (strValue.compare(pos, 8, "CHARSET=", 8) == 0)
{
pos += 8; // move position to char after 'CHARSET='
size_t len = strValue.find(';', pos);
if (len != std::string::npos)
len -= pos;
std::string charset(strValue, pos, len); // intentionally ignoring possible ';' inside quoted string
// as we don't support any charset with ';' in name
StringUtils::Trim(charset, m_whitespaceChars);
if (!charset.empty())
{
if (charset[0] != '"')
return charset;
else
{ // charset contains quoted string (allowed according to RFC 2616)
StringUtils::Replace(charset, "\\", ""); // unescape chars, ignoring possible '\"' and '\\'
const size_t closingQ = charset.find('"', 1);
if (closingQ == std::string::npos)
return ""; // no closing quote
return charset.substr(1, closingQ - 1);
}
}
}
pos = strValue.find(';', pos); // find next parameter
}
}
return ""; // no charset is detected
}
std::string CHttpHeader::GetCharset(void) const
{
std::string strValue(GetValueRaw("content-type"));
if (strValue.empty())
return strValue;
const size_t semicolonPos = strValue.find(';');
if (semicolonPos == std::string::npos)
return "";
StringUtils::ToUpper(strValue);
size_t posCharset;
if ((posCharset = strValue.find("; CHARSET=", semicolonPos)) != std::string::npos)
posCharset += 10;
else if ((posCharset = strValue.find(";CHARSET=", semicolonPos)) != std::string::npos)
posCharset += 9;
else
return "";
return strValue.substr(posCharset, strValue.find(';', posCharset) - posCharset);
}
std::string CHttpHeader::GetMimeType(void) const
{
std::string strValue(GetValueRaw("content-type"));
return strValue.substr(0, strValue.find(';'));
}
