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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set et sw=2 ts=2: */
/***************************************************************************
* versionstr.cc
*
* Wed Jul 22 11:41:32 CEST 2009
* Copyright 2009 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of CamSync.
*
* CamSync is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* CamSync 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CamSync; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "versionstr.h"
#include <memory.h>
#include <stdlib.h>
#include <stdio.h>
// Workaround - major, minor and patch are defined as macros when using _GNU_SOURCES
#ifdef major
#undef major
#endif
#ifdef minor
#undef minor
#endif
#ifdef patch
#undef patch
#endif
VersionStr::VersionStr(std::string v) throw(const char *)
{
memset(version, 0, sizeof(version));
set(v);
}
VersionStr::VersionStr(size_t major, size_t minor, size_t patch)
{
version[0] = major;
version[1] = minor;
version[2] = patch;
}
void VersionStr::set(std::string v) throw(const char *)
{
std::string num;
size_t idx = 0;
for(size_t i = 0; i < v.length(); i++) {
if(v[i] == '.') {
if(idx > 2) throw "Version string is too long.";
version[idx] = atoi(num.c_str());
idx++;
num = "";
} else if(v[i] >= '0' && v[i] <= '9') {
num.append(1, v[i]);
} else {
throw "Version string contains illegal character.";
}
}
if(idx > 2) throw "Version string is too long.";
version[idx] = atoi(num.c_str());
}
VersionStr::operator std::string() const
{
std::string v;
char buf[64];
if(patch()) {
sprintf(buf, "%d.%d.%d", (int)major(), (int)minor(), (int)patch());
} else {
sprintf(buf, "%d.%d", (int)major(), (int)minor());
}
v = buf;
return v;
}
void VersionStr::operator=(std::string v) throw(const char *)
{
set(v);
}
// return a - b simplified as -1, 0 or 1
static int vdiff(const VersionStr &a, const VersionStr &b)
{
if(a.major() < b.major()) return -1;
if(a.major() > b.major()) return 1;
if(a.minor() < b.minor()) return -1;
if(a.minor() > b.minor()) return 1;
if(a.patch() < b.patch()) return -1;
if(a.patch() > b.patch()) return 1;
return 0;
}
bool VersionStr::operator<(const VersionStr &other) const
{
if(vdiff(*this, other) == -1) return true;
return false;
}
bool VersionStr::operator>(const VersionStr &other) const
{
if(vdiff(*this, other) == 1) return true;
return false;
}
bool VersionStr::operator==(const VersionStr &other) const
{
if(vdiff(*this, other) == 0) return true;
return false;
}
bool VersionStr::operator<=(const VersionStr &other) const
{
if(vdiff(*this, other) != 1) return true;
return false;
}
bool VersionStr::operator>=(const VersionStr &other) const
{
if(vdiff(*this, other) != -1) return true;
return false;
}
size_t VersionStr::major() const
{
return version[0];
}
size_t VersionStr::minor() const
{
return version[1];
}
size_t VersionStr::patch() const
{
return version[2];
}
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