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#include "JavaVersion.h"
#include <MMCStrings.h>
#include <QRegularExpression>
#include <QString>
JavaVersion & JavaVersion::operator=(const QString & javaVersionString)
{
string = javaVersionString;
auto getCapturedInteger = [](const QRegularExpressionMatch & match, const QString &what) -> int
{
auto str = match.captured(what);
if(str.isEmpty())
{
return 0;
}
return str.toInt();
};
QRegularExpression pattern;
if(javaVersionString.startsWith("1."))
{
pattern = QRegularExpression ("1[.](?<major>[0-9]+)([.](?<minor>[0-9]+))?(_(?<security>[0-9]+)?)?(-(?<prerelease>[a-zA-Z0-9]+))?");
}
else
{
pattern = QRegularExpression("(?<major>[0-9]+)([.](?<minor>[0-9]+))?([.](?<security>[0-9]+))?(-(?<prerelease>[a-zA-Z0-9]+))?");
}
auto match = pattern.match(string);
parseable = match.hasMatch();
major = getCapturedInteger(match, "major");
minor = getCapturedInteger(match, "minor");
security = getCapturedInteger(match, "security");
prerelease = match.captured("prerelease");
return *this;
}
JavaVersion::JavaVersion(const QString &rhs)
{
operator=(rhs);
}
QString JavaVersion::toString()
{
return string;
}
bool JavaVersion::requiresPermGen()
{
if(parseable)
{
return major < 8;
}
return true;
}
bool JavaVersion::operator<(const JavaVersion &rhs)
{
if(parseable && rhs.parseable)
{
if(major < rhs.major)
return true;
if(major > rhs.major)
return false;
if(minor < rhs.minor)
return true;
if(minor > rhs.minor)
return false;
if(security < rhs.security)
return true;
if(security > rhs.security)
return false;
// everything else being equal, consider prerelease status
bool thisPre = !prerelease.isEmpty();
bool rhsPre = !rhs.prerelease.isEmpty();
if(thisPre && !rhsPre)
{
// this is a prerelease and the other one isn't -> lesser
return true;
}
else if(!thisPre && rhsPre)
{
// this isn't a prerelease and the other one is -> greater
return false;
}
else if(thisPre && rhsPre)
{
// both are prereleases - use natural compare...
return Strings::naturalCompare(prerelease, rhs.prerelease, Qt::CaseSensitive) < 0;
}
// neither is prerelease, so they are the same -> this cannot be less than rhs
return false;
}
else return Strings::naturalCompare(string, rhs.string, Qt::CaseSensitive) < 0;
}
bool JavaVersion::operator==(const JavaVersion &rhs)
{
if(parseable && rhs.parseable)
{
return major == rhs.major && minor == rhs.minor && security == rhs.security && prerelease == rhs.prerelease;
}
return string == rhs.string;
}
bool JavaVersion::operator>(const JavaVersion &rhs)
{
return (!operator<(rhs)) && (!operator==(rhs));
}
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