1 files changed, 140 insertions, 0 deletions
diff --git a/api/logic/Version.cpp b/api/logic/Version.cpp
new file mode 100644
index 00000000..3c4727ad
--- /dev/null
+++ b/api/logic/Version.cpp
@@ -0,0 +1,140 @@
+#include "Version.h"
+
+#include <QStringList>
+#include <QUrl>
+#include <QRegularExpression>
+#include <QRegularExpressionMatch>
+
+Version::Version(const QString &str) : m_string(str)
+{
+	parse();
+}
+
+bool Version::operator<(const Version &other) const
+{
+	const int size = qMax(m_sections.size(), other.m_sections.size());
+	for (int i = 0; i < size; ++i)
+	{
+		const Section sec1 = (i >= m_sections.size()) ? Section("0") : m_sections.at(i);
+		const Section sec2 =
+			(i >= other.m_sections.size()) ? Section("0") : other.m_sections.at(i);
+		if (sec1 != sec2)
+		{
+			return sec1 < sec2;
+		}
+	}
+
+	return false;
+}
+bool Version::operator<=(const Version &other) const
+{
+	return *this < other || *this == other;
+}
+bool Version::operator>(const Version &other) const
+{
+	const int size = qMax(m_sections.size(), other.m_sections.size());
+	for (int i = 0; i < size; ++i)
+	{
+		const Section sec1 = (i >= m_sections.size()) ? Section("0") : m_sections.at(i);
+		const Section sec2 =
+			(i >= other.m_sections.size()) ? Section("0") : other.m_sections.at(i);
+		if (sec1 != sec2)
+		{
+			return sec1 > sec2;
+		}
+	}
+
+	return false;
+}
+bool Version::operator>=(const Version &other) const
+{
+	return *this > other || *this == other;
+}
+bool Version::operator==(const Version &other) const
+{
+	const int size = qMax(m_sections.size(), other.m_sections.size());
+	for (int i = 0; i < size; ++i)
+	{
+		const Section sec1 = (i >= m_sections.size()) ? Section("0") : m_sections.at(i);
+		const Section sec2 =
+			(i >= other.m_sections.size()) ? Section("0") : other.m_sections.at(i);
+		if (sec1 != sec2)
+		{
+			return false;
+		}
+	}
+
+	return true;
+}
+bool Version::operator!=(const Version &other) const
+{
+	return !operator==(other);
+}
+
+void Version::parse()
+{
+	m_sections.clear();
+
+	QStringList parts = m_string.split('.');
+
+	for (const auto part : parts)
+	{
+		m_sections.append(Section(part));
+	}
+}
+
+bool versionIsInInterval(const QString &version, const QString &interval)
+{
+	return versionIsInInterval(Version(version), interval);
+}
+bool versionIsInInterval(const Version &version, const QString &interval)
+{
+	if (interval.isEmpty() || version.toString() == interval)
+	{
+		return true;
+	}
+
+	// Interval notation is used
+	QRegularExpression exp(
+		"(?<start>[\\[\\]\\(\\)])(?<bottom>.*?)(,(?<top>.*?))?(?<end>[\\[\\]\\(\\)]),?");
+	QRegularExpressionMatch match = exp.match(interval);
+	if (match.hasMatch())
+	{
+		const QChar start = match.captured("start").at(0);
+		const QChar end = match.captured("end").at(0);
+		const QString bottom = match.captured("bottom");
+		const QString top = match.captured("top");
+
+		// check if in range (bottom)
+		if (!bottom.isEmpty())
+		{
+			const auto bottomVersion = Version(bottom);
+			if ((start == '[') && !(version >= bottomVersion))
+			{
+				return false;
+			}
+			else if ((start == '(') && !(version > bottomVersion))
+			{
+				return false;
+			}
+		}
+
+		// check if in range (top)
+		if (!top.isEmpty())
+		{
+			const auto topVersion = Version(top);
+			if ((end == ']') && !(version <= topVersion))
+			{
+				return false;
+			}
+			else if ((end == ')') && !(version < topVersion))
+			{
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	return false;
+}