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davmail/archive/jsmooth-0.9.9-7-patch/skeletons/commonjava/Version.h

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/*
JSmooth: a VM wrapper toolkit for Windows
Copyright (C) 2003-2007 Rodrigo Reyes <reyes@charabia.net>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __VERSION_H_
#define __VERSION_H_
#include <cstdio>
#include <string>
#include "common.h"
#include "StringUtils.h"
/**
* Manages versions as used by Sun's JVM. The version scheme used is
* major.minor.sub, for instance 1.1.8 or 1.4.2.
*
* @author Rodrigo Reyes <reyes@charabia.net>
*/
class Version
{
private:
int m_major;
int m_minor;
int m_sub;
public:
std::string Value;
/**
* Creates a Version object from a string representation. This
* string needs to start as a normal version, but don't need to
* follow exactly the schema X.Y.Z. The Major number is mandatory,
* but the Minor and Sub numbers are optional.
*
* If the string representation does not represent a valid
* version, the object is said 'invalid', and returns false to the
* isInvalid() method.
*
* @param val a string representation of the version.
*/
Version(std::string val);
/**
* Creates an invalid Version object. The object created returns
* false to the isValid() method.
*/
Version();
/**
* Returns the major number of this Version.
*/
int getMajor() const;
/**
* Returns the minor number of this Version.
*/
int getMinor() const;
/**
* Returns the subminor number of this Version.
*/
int getSubMinor() const;
std::string toString() const;
// bool operator > (const Version& v) const;
friend bool operator < (const Version& v1, const Version& v2);
friend bool operator <= (const Version& v1, const Version& v2);
/**
* A version object may be invalid if it does not refer to a valid
* version. In such a case, the behaviour of object the is altered
* as follows:
*
* - The getMajor(), getMinor(), and getSubMinor() methods return 0
* - Any comparison (< or <=) between an invalid Version object
* and another object (invalid or not) return true.
*/
bool isValid() const;
private:
void parseValue(const std::string& val);
int extractIntAt(const std::string& val, int pos) const;
public:
struct AscendingSort
{
bool operator()(const Version& v1, const Version& v2)
{
if (v1.getMajor() > v2.getMajor())
return true;
if (v1.getMajor() < v2.getMajor())
return false;
if (v1.getMinor() > v2.getMinor())
return true;
if (v1.getMinor() < v2.getMinor())
return false;
if (v1.getSubMinor() > v2.getSubMinor())
return true;
if (v1.getSubMinor() < v2.getSubMinor())
return false;
return false;
}
};
};
#endif