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authorRemko Tronçon <git@el-tramo.be>2009-06-01 08:48:42 (GMT)
committerRemko Tronçon <git@el-tramo.be>2009-06-01 09:24:28 (GMT)
commit2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch)
treed46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/asio/local/basic_endpoint.hpp
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+//
+// basic_endpoint.hpp
+// ~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+// Derived from a public domain implementation written by Daniel Casimiro.
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef BOOST_ASIO_LOCAL_BASIC_ENDPOINT_HPP
+#define BOOST_ASIO_LOCAL_BASIC_ENDPOINT_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include <boost/asio/detail/push_options.hpp>
+
+#include <boost/asio/detail/push_options.hpp>
+#include <boost/throw_exception.hpp>
+#include <cstddef>
+#include <cstring>
+#include <ostream>
+#include <boost/system/system_error.hpp>
+#include <boost/asio/detail/pop_options.hpp>
+
+#include <boost/asio/error.hpp>
+#include <boost/asio/detail/socket_ops.hpp>
+#include <boost/asio/detail/socket_types.hpp>
+#include <boost/asio/detail/throw_error.hpp>
+
+#if !defined(BOOST_ASIO_DISABLE_LOCAL_SOCKETS)
+# if !defined(BOOST_WINDOWS) && !defined(__CYGWIN__)
+# define BOOST_ASIO_HAS_LOCAL_SOCKETS 1
+# endif // !defined(BOOST_WINDOWS) && !defined(__CYGWIN__)
+#endif // !defined(BOOST_ASIO_DISABLE_LOCAL_SOCKETS)
+
+#if defined(BOOST_ASIO_HAS_LOCAL_SOCKETS) \
+ || defined(GENERATING_DOCUMENTATION)
+
+
+namespace boost {
+namespace asio {
+namespace local {
+
+/// Describes an endpoint for a UNIX socket.
+/**
+ * The boost::asio::local::basic_endpoint class template describes an endpoint
+ * that may be associated with a particular UNIX socket.
+ *
+ * @par Thread Safety
+ * @e Distinct @e objects: Safe.@n
+ * @e Shared @e objects: Unsafe.
+ *
+ * @par Concepts:
+ * Endpoint.
+ */
+template <typename Protocol>
+class basic_endpoint
+{
+public:
+ /// The protocol type associated with the endpoint.
+ typedef Protocol protocol_type;
+
+ /// The type of the endpoint structure. This type is dependent on the
+ /// underlying implementation of the socket layer.
+#if defined(GENERATING_DOCUMENTATION)
+ typedef implementation_defined data_type;
+#else
+ typedef boost::asio::detail::socket_addr_type data_type;
+#endif
+
+ /// Default constructor.
+ basic_endpoint()
+ {
+ init("", 0);
+ }
+
+ /// Construct an endpoint using the specified path name.
+ basic_endpoint(const char* path)
+ {
+ using namespace std; // For strlen.
+ init(path, strlen(path));
+ }
+
+ /// Construct an endpoint using the specified path name.
+ basic_endpoint(const std::string& path)
+ {
+ init(path.data(), path.length());
+ }
+
+ /// Copy constructor.
+ basic_endpoint(const basic_endpoint& other)
+ : data_(other.data_),
+ path_length_(other.path_length_)
+ {
+ }
+
+ /// Assign from another endpoint.
+ basic_endpoint& operator=(const basic_endpoint& other)
+ {
+ data_ = other.data_;
+ path_length_ = other.path_length_;
+ return *this;
+ }
+
+ /// The protocol associated with the endpoint.
+ protocol_type protocol() const
+ {
+ return protocol_type();
+ }
+
+ /// Get the underlying endpoint in the native type.
+ data_type* data()
+ {
+ return &data_.base;
+ }
+
+ /// Get the underlying endpoint in the native type.
+ const data_type* data() const
+ {
+ return &data_.base;
+ }
+
+ /// Get the underlying size of the endpoint in the native type.
+ std::size_t size() const
+ {
+ return path_length_
+ + offsetof(boost::asio::detail::sockaddr_un_type, sun_path);
+ }
+
+ /// Set the underlying size of the endpoint in the native type.
+ void resize(std::size_t size)
+ {
+ if (size > sizeof(boost::asio::detail::sockaddr_un_type))
+ {
+ boost::system::system_error e(boost::asio::error::invalid_argument);
+ boost::throw_exception(e);
+ }
+ else if (size == 0)
+ {
+ path_length_ = 0;
+ }
+ else
+ {
+ path_length_ = size
+ - offsetof(boost::asio::detail::sockaddr_un_type, sun_path);
+
+ // The path returned by the operating system may be NUL-terminated.
+ if (path_length_ > 0 && data_.local.sun_path[path_length_ - 1] == 0)
+ --path_length_;
+ }
+ }
+
+ /// Get the capacity of the endpoint in the native type.
+ std::size_t capacity() const
+ {
+ return sizeof(boost::asio::detail::sockaddr_un_type);
+ }
+
+ /// Get the path associated with the endpoint.
+ std::string path() const
+ {
+ return std::string(data_.local.sun_path, path_length_);
+ }
+
+ /// Set the path associated with the endpoint.
+ void path(const char* p)
+ {
+ using namespace std; // For strlen.
+ init(p, strlen(p));
+ }
+
+ /// Set the path associated with the endpoint.
+ void path(const std::string& p)
+ {
+ init(p.data(), p.length());
+ }
+
+ /// Compare two endpoints for equality.
+ friend bool operator==(const basic_endpoint<Protocol>& e1,
+ const basic_endpoint<Protocol>& e2)
+ {
+ return e1.path() == e2.path();
+ }
+
+ /// Compare two endpoints for inequality.
+ friend bool operator!=(const basic_endpoint<Protocol>& e1,
+ const basic_endpoint<Protocol>& e2)
+ {
+ return e1.path() != e2.path();
+ }
+
+ /// Compare endpoints for ordering.
+ friend bool operator<(const basic_endpoint<Protocol>& e1,
+ const basic_endpoint<Protocol>& e2)
+ {
+ return e1.path() < e2.path();
+ }
+
+private:
+ // The underlying UNIX socket address.
+ union data_union
+ {
+ boost::asio::detail::socket_addr_type base;
+ boost::asio::detail::sockaddr_un_type local;
+ } data_;
+
+ // The length of the path associated with the endpoint.
+ std::size_t path_length_;
+
+ // Initialise with a specified path.
+ void init(const char* path, std::size_t path_length)
+ {
+ if (path_length > sizeof(data_.local.sun_path) - 1)
+ {
+ // The buffer is not large enough to store this address.
+ boost::system::error_code ec(boost::asio::error::name_too_long);
+ boost::asio::detail::throw_error(ec);
+ }
+
+ using namespace std; // For memcpy.
+ data_.local = boost::asio::detail::sockaddr_un_type();
+ data_.local.sun_family = AF_UNIX;
+ memcpy(data_.local.sun_path, path, path_length);
+ path_length_ = path_length;
+
+ // NUL-terminate normal path names. Names that start with a NUL are in the
+ // UNIX domain protocol's "abstract namespace" and are not NUL-terminated.
+ if (path_length > 0 && data_.local.sun_path[0] == 0)
+ data_.local.sun_path[path_length] = 0;
+ }
+};
+
+/// Output an endpoint as a string.
+/**
+ * Used to output a human-readable string for a specified endpoint.
+ *
+ * @param os The output stream to which the string will be written.
+ *
+ * @param endpoint The endpoint to be written.
+ *
+ * @return The output stream.
+ *
+ * @relates boost::asio::local::basic_endpoint
+ */
+template <typename Elem, typename Traits, typename Protocol>
+std::basic_ostream<Elem, Traits>& operator<<(
+ std::basic_ostream<Elem, Traits>& os,
+ const basic_endpoint<Protocol>& endpoint)
+{
+ os << endpoint.path();
+ return os;
+}
+
+} // namespace local
+} // namespace asio
+} // namespace boost
+
+#endif // defined(BOOST_ASIO_HAS_LOCAL_SOCKETS)
+ // || defined(GENERATING_DOCUMENTATION)
+
+#include <boost/asio/detail/pop_options.hpp>
+
+#endif // BOOST_ASIO_LOCAL_BASIC_ENDPOINT_HPP