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/*
* libjingle
* Copyright 2004--2005, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TALK_XMPP_JID_H_
#define TALK_XMPP_JID_H_
#include <string>
#include "talk/base/basictypes.h"
#include "talk/xmllite/xmlconstants.h"
namespace buzz {
//! The Jid class encapsulates and provides parsing help for Jids
//! A Jid consists of three parts. The node, the domain and the resource.
//!
//! node@domain/resource
//!
//! The node and resource are both optional. A valid jid is defined to have
//! a domain. A bare jid is defined to not have a resource and a full jid
//! *does* have a resource.
class Jid {
public:
explicit Jid();
explicit Jid(const std::string & jid_string);
explicit Jid(const std::string & node_name,
const std::string & domain_name,
const std::string & resource_name);
explicit Jid(bool special, const std::string & special_string);
Jid(const Jid & jid) : data_(jid.data_) {
if (data_ != NULL) {
data_->AddRef();
}
}
Jid & operator=(const Jid & jid) {
if (jid.data_ != NULL) {
jid.data_->AddRef();
}
if (data_ != NULL) {
data_->Release();
}
data_ = jid.data_;
return *this;
}
~Jid() {
if (data_ != NULL) {
data_->Release();
}
}
const std::string & node() const {
return !data_ ? EmptyStringRef() : data_->node_name_;
}
const std::string & domain() const {
return !data_ ? EmptyStringRef() : data_->domain_name_;
}
const std::string & resource() const {
return !data_ ? EmptyStringRef() : data_->resource_name_;
}
std::string Str() const;
Jid BareJid() const;
bool IsEmpty() const;
bool IsValid() const;
bool IsBare() const;
bool IsFull() const;
bool BareEquals(const Jid & other) const;
bool operator==(const Jid & other) const;
bool operator!=(const Jid & other) const { return !operator==(other); }
bool operator<(const Jid & other) const { return Compare(other) < 0; };
bool operator>(const Jid & other) const { return Compare(other) > 0; };
int Compare(const Jid & other) const;
// A quick and dirty hash. Don't count on this producing a great
// distribution.
uint32 ComputeLameHash() const;
private:
static std::string prepNode(const std::string str,
std::string::const_iterator start, std::string::const_iterator end,
bool *valid);
static char prepNodeAscii(char ch, bool *valid);
static std::string prepResource(const std::string str,
std::string::const_iterator start, std::string::const_iterator end,
bool *valid);
static char prepResourceAscii(char ch, bool *valid);
static std::string prepDomain(const std::string str,
std::string::const_iterator start, std::string::const_iterator end,
bool *valid);
static void prepDomain(const std::string str,
std::string::const_iterator start, std::string::const_iterator end,
std::string *buf, bool *valid);
static void prepDomainLabel(const std::string str,
std::string::const_iterator start, std::string::const_iterator end,
std::string *buf, bool *valid);
static char prepDomainLabelAscii(char ch, bool *valid);
class Data {
public:
Data() : refcount_(1) {}
Data(const std::string & node, const std::string &domain,
const std::string & resource)
: node_name_(node),
domain_name_(domain),
resource_name_(resource),
refcount_(1) {
}
const std::string node_name_;
const std::string domain_name_;
const std::string resource_name_;
// TODO: ref-counter is not thread-safe here. Make it
// thread-safe or remove this optimization.
void AddRef() { refcount_++; }
void Release() { if (!--refcount_) delete this; }
private:
int refcount_;
};
Data * data_;
};
}
#endif // TALK_XMPP_JID_H_