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#include <iostream>
#include <QProcess>
#include <QStringList>
#include <QFile>
#include <QTextStream>
#include <QDate>
#include <QTime>
#include <QFileInfo>
#include <QTemporaryFile>
#include <cstdlib>
using namespace std;
static int getBuildNumber()
{
const QDate today(QDate::currentDate());
return ((today.year() - 1994) * 1000) + today.dayOfYear();
}
static int getSubversionRevision()
{
int revision = 0;
QProcess process;
process.start("svnversion", QStringList() << "." << "--no-newline");
if (process.waitForStarted() && process.waitForReadyRead())
{
const QString str(process.readAll().constData());
const int pos = str.indexOf(':');
if (pos != -1)
{
revision = atoi(str.mid(pos + 1).toAscii().constData());
}
else
{
revision = atoi(str.toAscii().constData());
}
process.waitForFinished();
}
return revision;
}
static QByteArray readFile(const QString& fileName)
{
QFile file(fileName);
if (!file.open(QIODevice::ReadOnly))
{
return QByteArray();
}
return file.readAll();
}
static int writeFile(const QString& fileName, const int major, const int minor, const int revision, const int build)
{
// Create a temp file containing the version info and
// only replace the existing one if they are different
QTemporaryFile tempFile;
if (tempFile.open())
{
QTextStream out(&tempFile);
out << "#ifndef VERSION_H\r\n";
out << "#define VERSION_H\r\n\r\n";
out << "namespace Version\r\n";
out << "{\r\n";
out << "\tstatic const int MAJOR = " << major << ";\r\n";
out << "\tstatic const int MINOR = " << minor << ";\r\n";
out << "\tstatic const int REVISION = " << revision << ";\r\n";
out << "\tstatic const int BUILD = " << build << ";\r\n";
out << "}\r\n\r\n";
out << "#endif // VERSION_H\r\n";
const QString tempFileName = tempFile.fileName();
tempFile.close();
if (!QFile::exists(fileName) || readFile(fileName) != readFile(tempFileName))
{
QFile::remove(fileName);
QFile::copy(tempFileName, fileName);
}
return 0;
}
else
{
cout << "Error creating temporary file!" << endl;
return 1;
}
}
int main(int argc, char *argv[])
{
if (argc != 4)
{
cout << "Usage: version major minor filename" << endl;
return 1;
}
const int major = atoi(argv[1]);
const int minor = atoi(argv[2]);
const int revision = getSubversionRevision();
const int build = getBuildNumber();
cout << major << '.' << minor << '.' << revision << '.' << build << endl;
return writeFile(argv[3], major, minor, revision, build);
}
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