static Http::HeaderValueCollection CanonicalizeHeaders(Http::HeaderValueCollection&& headers)
{
Http::HeaderValueCollection canonicalHeaders;
for (const auto& header : headers)
{
auto trimmedHeaderName = StringUtils::Trim(header.first.c_str());
auto trimmedHeaderValue = StringUtils::Trim(header.second.c_str());
//multiline gets converted to line1,line2,etc...
auto headerMultiLine = StringUtils::SplitOnLine(trimmedHeaderValue);
Aws::String headerValue = headerMultiLine[0];
if (headerMultiLine.size() > 1)
{
for(size_t i = 1; i < headerMultiLine.size(); ++i)
{
headerValue += ",";
headerValue += StringUtils::Trim(headerMultiLine[i].c_str());
}
}
//duplicate spaces need to be converted to one.
Aws::String::iterator new_end =
std::unique(headerValue.begin(), headerValue.end(),
[=](char lhs, char rhs) { return (lhs == rhs) && (lhs == ' '); }
);
headerValue.erase(new_end, headerValue.end());
canonicalHeaders[trimmedHeaderName] = headerValue;
}
return canonicalHeaders;
}
Aws::String StringUtils::ToUpper(const char* source)
{
Aws::String copy;
size_t sourceLength = strlen(source);
copy.resize(sourceLength);
std::transform(source, source + sourceLength, copy.begin(), ::toupper);
return std::move(copy);
}