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/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include "Url.h"
#include <sstream>
#include <boost/spirit.hpp>
#include <boost/spirit/actor.hpp>
using namespace boost::spirit;
using namespace std;
namespace qpid {
string Url::str() const {
ostringstream os;
os << *this;
return os.str();
}
ostream& operator<<(ostream& os, const Url& url) {
Url::const_iterator i = url.begin();
os << "amqp:";
if (i!=url.end()) {
os << *i++;
while (i != url.end())
os << "," << *i++;
}
return os;
}
// Addition to boost::spirit parsers: accept any character from a
// string. Vastly more compile-time-efficient than long rules of the
// form: ch_p('x') | ch_p('y') |...
//
struct ch_in : public char_parser<ch_in> {
ch_in(const string& chars_) : chars(chars_) {}
bool test(char ch_) const {
return chars.find(ch_) != string::npos;
}
string chars;
};
inline ch_in ch_in_p(const string& chars) {
return ch_in(chars);
}
/** Grammar for AMQP URLs. */
struct UrlGrammar : public grammar<UrlGrammar>
{
Url& addr;
UrlGrammar(Url& addr_) : addr(addr_) {}
template <class ScannerT>
struct definition {
TcpAddress tcp;
definition(const UrlGrammar& self)
{
first = eps_p[clear_a(self.addr)] >> amqp_url;
amqp_url = str_p("amqp:") >> prot_addr_list >>
!(str_p("/") >> !parameters);
prot_addr_list = prot_addr % ',';
prot_addr = tcp_prot_addr; // Extend for TLS etc.
// TCP addresses
tcp_prot_addr = tcp_id >> tcp_addr[push_back_a(self.addr, tcp)];
tcp_id = !str_p("tcp:");
tcp_addr = !(host[assign_a(tcp.host)] >> !(':' >> port));
// See http://www.apps.ietf.org/rfc/rfc3986.html#sec-A
// for real host grammar. Shortcut:
port = uint_parser<uint16_t>()[assign_a(tcp.port)];
host = *( unreserved | pct_encoded );
unreserved = alnum_p | ch_in_p("-._~");
pct_encoded = "%" >> xdigit_p >> xdigit_p;
parameters = *anychar_p >> end_p; // Ignore, not used yet.
}
const rule<ScannerT>& start() const { return first; }
rule<ScannerT> first, amqp_url, prot_addr_list, prot_addr,
tcp_prot_addr, tcp_id, tcp_addr, host, port,
unreserved, pct_encoded, parameters;
};
};
void Url::parse(const char* url) {
if (!boost::spirit::parse(url, UrlGrammar(*this)).full)
throw InvalidUrl(string("Invalid AMQP url: ")+url);
}
void Url::parseNoThrow(const char* url) {
if (!boost::spirit::parse(url, UrlGrammar(*this)).full)
clear();
}
} // namespace qpid
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