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