/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
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**************************************************************************/

#include "ioutputparser.h"
#include "task.h"

#include <utils/qtcassert.h>

/*!
    \class ProjectExplorer::IOutputParser

    \brief Interface for an output parser that emit build issues (tasks).

    \sa ProjectExplorer::Task
*/

/*!
    \fn void ProjectExplorer::IOutputParser::appendOutputParser(IOutputParser *parser)

    \brief Append a subparser to this parser, of which IOutputParser will take ownership.
*/

/*!
    \fn IOutputParser *ProjectExplorer::IOutputParser::takeOutputParserChain()

    \brief Remove the appended outputparser chain from this parser, transferring
           ownership of the parser chain to the caller.
*/

/*!
    \fn IOutputParser *ProjectExplorer::IOutputParser::childParser() const

    \brief Return the head of this parsers output parser children, IOutputParser keeps ownership.
*/

/*!
   \fn void ProjectExplorer::IOutputParser::stdOutput(const QString &line)

   \brief Called once for each line if standard output to parse.
*/

/*!
   \fn void ProjectExplorer::IOutputParser::stdError(const QString &line)

   \brief Called once for each line if standard error to parse.
*/

/*!
   \fn bool ProjectExplorer::IOutputParser::hasFatalErrors() const

   \brief This is mainly a symbian specific quirk.
*/

/*!
   \fn void ProjectExplorer::IOutputParser::addOutput(const QString &string, ProjectExplorer::BuildStep::OutputFormat format)

   \brief Should be emitted whenever some additional information should be added to the output.

   Note: This is additional information. There is no need to add each line!
*/

/*!
   \fn void ProjectExplorer::IOutputParser::addTask(const ProjectExplorer::Task &task)

   \brief Should be emitted for each task seen in the output.
*/

/*!
   \fn void ProjectExplorer::IOutputParser::outputAdded(const QString &string, ProjectExplorer::BuildStep::OutputFormat format)

   \brief Subparsers have their addOutput signal connected to this slot.
*/

/*!
   \fn void ProjectExplorer::IOutputParser::outputAdded(const QString &string, ProjectExplorer::BuildStep::OutputFormat format)

   \brief This method can be overwritten to change the string.
*/

/*!
   \fn void ProjectExplorer::IOutputParser::taskAdded(const ProjectExplorer::Task &task)

   \brief Subparsers have their addTask signal connected to this slot.
   This method can be overwritten to change the task.
*/

namespace ProjectExplorer {

IOutputParser::IOutputParser() : m_parser(0)
{
}

IOutputParser::~IOutputParser()
{
    delete m_parser;
}

void IOutputParser::appendOutputParser(IOutputParser *parser)
{
    QTC_ASSERT(parser, return);
    if (m_parser) {
        m_parser->appendOutputParser(parser);
        return;
    }

    m_parser = parser;
    connect(parser, SIGNAL(addOutput(QString,ProjectExplorer::BuildStep::OutputFormat)),
            this, SLOT(outputAdded(QString,ProjectExplorer::BuildStep::OutputFormat)), Qt::DirectConnection);
    connect(parser, SIGNAL(addTask(ProjectExplorer::Task)),
            this, SLOT(taskAdded(ProjectExplorer::Task)), Qt::DirectConnection);
}

IOutputParser *IOutputParser::takeOutputParserChain()
{
    IOutputParser *parser = m_parser;
    disconnect(parser, SIGNAL(addOutput(QString,ProjectExplorer::BuildStep::OutputFormat)),
               this, SLOT(outputAdded(QString,ProjectExplorer::BuildStep::OutputFormat)));
    disconnect(parser, SIGNAL(addTask(ProjectExplorer::Task)),
               this, SLOT(taskAdded(ProjectExplorer::Task)));
    m_parser = 0;
    return parser;
}

IOutputParser *IOutputParser::childParser() const
{
    return m_parser;
}

void IOutputParser::setChildParser(IOutputParser *parser)
{
    if (m_parser != parser)
        delete m_parser;
    m_parser = parser;
}

void IOutputParser::stdOutput(const QString &line)
{
    if (m_parser)
        m_parser->stdOutput(line);
}

void IOutputParser::stdError(const QString &line)
{
    if (m_parser)
        m_parser->stdError(line);
}

void IOutputParser::outputAdded(const QString &string, ProjectExplorer::BuildStep::OutputFormat format)
{
    emit addOutput(string, format);
}

void IOutputParser::taskAdded(const ProjectExplorer::Task &task)
{
    emit addTask(task);
}

bool IOutputParser::hasFatalErrors() const
{
    return false || (m_parser && m_parser->hasFatalErrors());
}

void IOutputParser::setWorkingDirectory(const QString &workingDirectory)
{
    if (m_parser)
        m_parser->setWorkingDirectory(workingDirectory);
}

}
