85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
/*
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Copyright (C) 2001-2006, William Joseph.
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All Rights Reserved.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#if !defined( INCLUDED_VERSIONLIB_H )
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#define INCLUDED_VERSIONLIB_H
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#include <cstddef>
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#include <string.h>
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#include <algorithm>
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class Version
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{
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public:
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int major;
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int minor;
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};
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inline bool operator<( const Version& version, const Version& other ){
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return version.major < other.major || ( !( other.major < version.major ) && version.minor < other.minor );
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}
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template<typename TextOutputStreamType>
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TextOutputStreamType& ostream_write( TextOutputStreamType& outputStream, const Version& version ){
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return outputStream << version.major << '.' << version.minor;
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}
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/// \brief Returns true if \p version (code) is compatible with \p other (data).
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inline bool version_compatible( const Version& version, const Version& other ){
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return version.major == other.major // different major-versions are always incompatible
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&& !( version.minor < other.minor ); // data minor-version is incompatible if greater than code minor-version
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}
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inline int string_range_parse_unsigned_decimal_integer( const char* first, const char* last ){
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int result = 0;
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for (; first != last; ++first )
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{
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result *= 10;
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result += *first - '0';
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}
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return result;
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}
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inline Version version_parse( const char* versionString ){
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Version version;
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const char* endVersion = versionString + strlen( versionString );
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const char* endMajor = strchr( versionString, '.' );
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if ( endMajor == 0 ) {
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endMajor = endVersion;
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version.minor = 0;
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}
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else
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{
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const char* endMinor = strchr( endMajor + 1, '.' );
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if ( endMinor == 0 ) {
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endMinor = endVersion;
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}
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version.minor = string_range_parse_unsigned_decimal_integer( endMajor + 1, endMinor );
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}
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version.major = string_range_parse_unsigned_decimal_integer( versionString, endMajor );
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return version;
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}
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#endif
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