std::size_t WTemplate::parseArgs(const std::string& text,
std::size_t pos,
std::vector<WString>& result)
{
std::size_t Error = std::string::npos;
if (pos == std::string::npos)
return Error;
enum { Next, Name, Value, SValue, DValue } state = Next;
WStringStream v;
for (; pos < text.length(); ++pos) {
char c = text[pos];
switch (state) {
case Next:
if (!std::isspace(c)) {
if (c == '}')
return pos;
else if (std::isalpha(c) || c == '_') {
state = Name;
v.clear();
v << c;
} else if (c == '\'') {
state = SValue;
v.clear();
} else if (c == '"') {
state = DValue;
v.clear();
} else
return Error;
}
break;
case Name:
if (c == '=') {
state = Value;
v << '=';
} else if (std::isspace(c)) {
result.push_back(WString::fromUTF8(v.str()));
state = Next;
} else if (c == '}') {
result.push_back(WString::fromUTF8(v.str()));
return pos;
} else if (std::isalnum(c) || c == '_' || c == '-')
v << c;
else
return Error;
break;
case Value:
if (c == '\'')
state = SValue;
else if (c == '"')
state = DValue;
else
return Error;
break;
case SValue:
case DValue:
char quote = state == SValue ? '\'' : '"';
std::size_t end = text.find(quote, pos);
if (end == std::string::npos)
return Error;
if (text[end - 1] == '\\')
v << text.substr(pos, end - pos - 1) << quote;
else {
v << text.substr(pos, end - pos);
result.push_back(WString::fromUTF8(v.str()));
state = Next;
}
pos = end;
}
}
return pos == text.length() ? std::string::npos : pos;
}
WT_BOSTREAM& Response::out()
{
if (!headersCommitted_) {
if (response_ &&
!continuation_ &&
(resource_->dispositionType() != ContentDisposition::None
|| !resource_->suggestedFileName().empty())) {
WStringStream cdp;
switch (resource_->dispositionType()) {
default:
case ContentDisposition::Inline:
cdp << "inline";
break;
case ContentDisposition::Attachment:
cdp << "attachment";
break;
}
const WString& fileName = resource_->suggestedFileName();
if (!fileName.empty()) {
if (resource_->dispositionType() == ContentDisposition::None) {
// backward compatibility-ish with older Wt versions
cdp.clear();
cdp << "attachment";
}
// Browser incompatibility hell: internatianalized filename suggestions
// First filename is for browsers that don't support RFC 5987
// Second filename is for browsers that do support RFC 5987
cdp << ';';
// We cannot query wApp here, because wApp doesn't exist for
// static resources.
const char *ua = response_->userAgent();
bool isIE = ua && strstr(ua, "MSIE") != nullptr;
bool isChrome = ua && strstr(ua, "Chrome") != nullptr;
if (isIE || isChrome) {
// filename="foo-%c3%a4-%e2%82%ac.html"
// Note: IE never converts %20 back to space, so avoid escaping
// IE wil also not url decode the filename if the file has no ASCII
// extension (e.g. .txt)
cdp << "filename=\""
<< Utils::urlEncode(fileName.toUTF8(), " ")
<< "\";";
} else {
// Binary UTF-8 sequence: for FF3, Safari, Chrome, Chrome9
cdp << "filename=\"" << fileName.toUTF8() << "\";";
}
// Next will be picked by RFC 5987 in favour of the
// one without specified encoding (Chrome9,
cdp << Utils::EncodeHttpHeaderField("filename", fileName);
addHeader("Content-Disposition", cdp.str());
} else {
addHeader("Content-Disposition", cdp.str());
}
}
headersCommitted_ = true;
}
if (out_)
return *out_;
else
return response_->out();
}
