void
AppendTagWithValue(nsACString & aTarget, char const aTag, nsCSubstring const & aValue)
{
aTarget.Append(aTag);
// First check the value string to save some memory copying
// for cases we don't need to escape at all (most likely).
if (!aValue.IsEmpty()) {
if (!aValue.Contains(',')) {
// No need to escape
aTarget.Append(aValue);
} else {
nsAutoCString escapedValue(aValue);
escapedValue.ReplaceSubstring(
NS_LITERAL_CSTRING(","), NS_LITERAL_CSTRING(",,"));
aTarget.Append(escapedValue);
}
}
aTarget.Append(',');
}
PRBool
IsValidHTTPToken(const nsCSubstring& aToken)
{
if (aToken.IsEmpty()) {
return PR_FALSE;
}
nsCSubstring::const_char_iterator iter, end;
aToken.BeginReading(iter);
aToken.EndReading(end);
while (iter != end) {
if (*iter <= 32 ||
*iter >= 127 ||
*iter == '(' ||
*iter == ')' ||
*iter == '<' ||
*iter == '>' ||
*iter == '@' ||
*iter == ',' ||
*iter == ';' ||
*iter == ':' ||
*iter == '\\' ||
*iter == '\"' ||
*iter == '/' ||
*iter == '[' ||
*iter == ']' ||
*iter == '?' ||
*iter == '=' ||
*iter == '{' ||
*iter == '}') {
return PR_FALSE;
}
++iter;
}
return PR_TRUE;
}