/****************************************************************************

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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

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** This file is part of the QtTest module of the Qt Toolkit.

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** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, 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

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**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

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**

** If you have questions regarding the use of this file, please contact

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** $QT_END_LICENSE$

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****************************************************************************/

#include "QtTest/private/qabstracttestlogger_p.h"

#include "QtTest/private/qtestlog_p.h"

#include "QtTest/qtestassert.h"

#include "QtCore/qbytearray.h"

#include <stdio.h>

#include <stdlib.h>

#include <stdarg.h>

#ifndef Q_OS_WIN

#include <unistd.h>

#endif

QT_BEGIN_NAMESPACE

namespace QTest

{

    static FILE *stream = 0;

}

void QAbstractTestLogger::outputString(const char *msg)

{

    QTEST_ASSERT(QTest::stream);

    ::fputs(msg, QTest::stream);

    ::fflush(QTest::stream);

}

bool QAbstractTestLogger::isTtyOutput()

{

    QTEST_ASSERT(QTest::stream);

#if defined(Q_OS_WIN) || defined(Q_OS_INTEGRITY)

    return true;

#else

    static bool ttyoutput = isatty(fileno(QTest::stream));

    return ttyoutput;

#endif

}

void QAbstractTestLogger::startLogging()

{

    QTEST_ASSERT(!QTest::stream);

    const char *out = QTestLog::outputFileName();

    if (!out) {

        QTest::stream = stdout;

        return;

    }

#if defined(_MSC_VER) && _MSC_VER >= 1400 && !defined(Q_OS_WINCE)

    if (::fopen_s(&QTest::stream, out, "wt")) {

#else

    QTest::stream = ::fopen(out, "wt");

    if (!QTest::stream) {

#endif

        printf("Unable to open file for logging: %s", out);

        ::exit(1);

    }

}

void QAbstractTestLogger::stopLogging()

{

    QTEST_ASSERT(QTest::stream);

    if (QTest::stream != stdout)

        fclose(QTest::stream);

    QTest::stream = 0;

}

namespace QTest

{

extern void filter_unprintable(char *str);

/*!

    \fn int QTest::qt_asprintf(QTestCharBuffer *buf, const char *format, ...);

    \internal

 */

int qt_asprintf(QTestCharBuffer *str, const char *format, ...)

{

    static const int MAXSIZE = 1024*1024*2;

    Q_ASSERT(str);

    int size = str->size();

    va_list ap;

    int res = 0;

    for (;;) {

        va_start(ap, format);

        res = qvsnprintf(str->data(), size, format, ap);

        va_end(ap);

        str->data()[size - 1] = '\0';

        if (res >= 0 && res < size) {

            // We succeeded

            break;

        }

        // buffer wasn't big enough, try again.

        // Note, we're assuming that a result of -1 is always due to running out of space.

        size *= 2;

        if (size > MAXSIZE) {

            break;

        }

        if (!str->reset(size))

            break; // out of memory - take what we have

    }

    filter_unprintable(str->data());

    return res;

}

}

QT_END_NAMESPACE