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/**
* Copyright 2010 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package jogamp.opengl;
import com.jogamp.common.util.VersionNumber;
import com.jogamp.common.util.VersionNumberString;
/**
* A class for storing and comparing OpenGL version numbers.
* This only works for desktop OpenGL at the moment.
*/
public class GLVersionNumber extends VersionNumberString {
private final boolean valid;
private GLVersionNumber(int[] val, int strEnd, short state, String versionString, boolean valid) {
super(val[0], val[1], val[2], strEnd, state, versionString);
this.valid = valid;
}
private static java.util.regex.Pattern getUnderscorePattern() {
if( null == _Pattern ) { // volatile dbl-checked-locking OK
synchronized( VersionNumber.class ) {
if( null == _Pattern ) {
_Pattern = getVersionNumberPattern("_");
}
}
}
return _Pattern;
}
private static volatile java.util.regex.Pattern _Pattern = null;
public static final GLVersionNumber create(String versionString) {
int[] val = new int[] { 0, 0, 0 };
int strEnd = 0;
short state = 0;
boolean valid = false;
if (versionString != null && versionString.length() > 0) {
try {
final java.util.regex.Pattern versionPattern;
if (versionString.startsWith("GL_VERSION_")) {
versionPattern = getUnderscorePattern();
} else {
versionPattern = VersionNumberString.getDefaultVersionNumberPattern();
}
final VersionNumberString version = new VersionNumberString(versionString, versionPattern);
strEnd = version.endOfStringMatch();
val[0] = version.getMajor();
val[1] = version.getMinor();
state = (short) ( ( version.hasMajor() ? VersionNumber.HAS_MAJOR : (short)0 ) |
( version.hasMinor() ? VersionNumber.HAS_MINOR : (short)0 ) );
valid = version.hasMajor() && version.hasMinor(); // Requires at least a defined major and minor version component!
} catch (Exception e) {
e.printStackTrace();
System.err.println("Info: ExtensionAvailabilityCache: FunctionAvailabilityCache.Version.<init>: " + e);
val[0] = 1;
val[1] = 0;
}
}
return new GLVersionNumber(val, strEnd, state, versionString, valid);
}
public final boolean isValid() {
return valid;
}
/**
* Returns the optional vendor version at the end of the
* <code>GL_VERSION</code> string if exists, otherwise the {@link VersionNumberString#zeroVersion zero version} instance.
* <pre>
* 2.1 Mesa 7.0.3-rc2 -> 7.0.3 (7.0.3-rc2)
* 2.1 Mesa 7.12-devel (git-d6c318e) -> 7.12.0 (7.12-devel)
* 4.2.12171 Compatibility Profile Context 9.01.8 -> 9.1.8 (9.01.8)
* 4.2.12198 Compatibility Profile Context 12.102.3.0 -> 12.102.3 (12.102.3.0)
* 4.3.0 NVIDIA 310.32 -> 310.32 (310.32)
* </pre>
*/
public static final VersionNumberString createVendorVersion(String versionString) {
if (versionString == null || versionString.length() <= 0) {
return null;
}
// Skip the 1st GL version
String str;
{
final GLVersionNumber glv = create(versionString);
str = versionString.substring(glv.endOfStringMatch());
}
while ( str.length() > 0 ) {
final VersionNumberString version = new VersionNumberString(str, getDefaultVersionNumberPattern());
final int eosm = version.endOfStringMatch();
if( 0 < eosm ) {
if( version.hasMajor() && version.hasMinor() ) { // Requires at least a defined major and minor version component!
return version;
}
str = str.substring( eosm );
} else {
break; // no match
}
}
return VersionNumberString.zeroVersion;
}
}
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