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// Copyright 2010 Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
//   notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its contributors
//   may be used to endorse or promote products derived from this software
//   without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.

#include "utils/signals/exceptions.hpp"

#include <cstring>

#include "utils/format/macros.hpp"

namespace signals = utils::signals;


/// Constructs a new error with a plain-text message.
///
/// \param message The plain-text error message.
signals::error::error(const std::string& message) :
    std::runtime_error(message)
{
}


/// Destructor for the error.
signals::error::~error(void) throw()
{
}


/// Constructs a new interrupted error.
///
/// \param signo_ The signal that caused the interrupt.
signals::interrupted_error::interrupted_error(const int signo_) :
    error(F("Interrupted by signal %s") % signo_),
    _signo(signo_)
{
}


/// Destructor for the error.
signals::interrupted_error::~interrupted_error(void) throw()
{
}


/// Queries the signal number of the interruption.
///
/// \return A signal number.
int
signals::interrupted_error::signo(void) const
{
    return _signo;
}


/// Constructs a new error based on an errno code.
///
/// \param message_ The message describing what caused the error.
/// \param errno_ The error code.
signals::system_error::system_error(const std::string& message_,
                                    const int errno_) :
    error(F("%s: %s") % message_ % strerror(errno_)),
    _original_errno(errno_)
{
}


/// Destructor for the error.
signals::system_error::~system_error(void) throw()
{
}


/// Gets the original errno code.
int
signals::system_error::original_errno(void) const throw()
{
    return _original_errno;
}