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/*
Copyright (C) 2001-2006, William Joseph.
All Rights Reserved.
This file is part of GtkRadiant.
GtkRadiant 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.
GtkRadiant 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 GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#if !defined(INCLUDED_VERSIONLIB_H)
#define INCLUDED_VERSIONLIB_H
#include <cstddef>
#include <string.h>
#include <algorithm>
class Version
{
public:
int major;
int minor;
};
inline bool operator<(const Version& version, const Version& other)
{
return version.major < other.major || (!(other.major < version.major) && version.minor < other.minor);
}
template<typename TextOutputStreamType>
TextOutputStreamType& ostream_write(TextOutputStreamType& outputStream, const Version& version)
{
return outputStream << version.major << '.' << version.minor;
}
/// \brief Returns true if \p version (code) is compatible with \p other (data).
inline bool version_compatible(const Version& version, const Version& other)
{
return version.major == other.major // different major-versions are always incompatible
&& !(version.minor < other.minor); // data minor-version is incompatible if greater than code minor-version
}
inline int string_range_parse_unsigned_decimal_integer(const char* first, const char* last)
{
int result = 0;
for(; first != last; ++first)
{
result *= 10;
result += *first - '0';
}
return result;
}
inline Version version_parse(const char* versionString)
{
Version version;
const char* endVersion = versionString + strlen(versionString);
const char* endMajor = strchr(versionString, '.');
if(endMajor == 0)
{
endMajor = endVersion;
version.minor = 0;
}
else
{
const char* endMinor = strchr(endMajor + 1, '.');
if(endMinor == 0)
{
endMinor = endVersion;
}
version.minor = string_range_parse_unsigned_decimal_integer(endMajor + 1, endMinor);
}
version.major = string_range_parse_unsigned_decimal_integer(versionString, endMajor);
return version;
}
#endif