/****************************************************************************
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** This file is part of the QtTest module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** accordance with the commercial license agreement provided with the
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** 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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** rights.  These rights are described in the Digia Qt LGPL Exception
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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****************************************************************************/

#include <QtTest/private/qabstracttestlogger_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

QAbstractTestLogger::QAbstractTestLogger(const char *filename)
{
    if (!filename) {
        stream = stdout;
        return;
    }
#if defined(_MSC_VER) && _MSC_VER >= 1400 && !defined(Q_OS_WINCE)
    if (::fopen_s(&stream, filename, "wt")) {
#else
    stream = ::fopen(filename, "wt");
    if (!stream) {
#endif
        fprintf(stderr, "Unable to open file for logging: %s\n", filename);
        ::exit(1);
    }
}

QAbstractTestLogger::~QAbstractTestLogger()
{
    QTEST_ASSERT(stream);
    if (stream != stdout) {
        fclose(stream);
    }
    stream = 0;
}

void QAbstractTestLogger::filterUnprintable(char *str) const
{
    char *idx = str;
    while (*idx) {
        if (((*idx < 0x20 && *idx != '\n' && *idx != '\t') || *idx > 0x7e))
            *idx = '?';
        ++idx;
    }
}

void QAbstractTestLogger::outputString(const char *msg)
{
    QTEST_ASSERT(stream);
    QTEST_ASSERT(msg);

    char *filtered = new char[strlen(msg) + 1];
    strcpy(filtered, msg);
    filterUnprintable(filtered);

    ::fputs(filtered, stream);
    ::fflush(stream);

    delete [] filtered;
}

void QAbstractTestLogger::startLogging()
{
}

void QAbstractTestLogger::stopLogging()
{
}

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
    }

    return res;
}

}

QT_END_NAMESPACE
