Move to semver versioning for MO2.

.gitignore

@@ -1,4 +1,5 @@
 edit
+.vscode
 CMakeLists.txt.user
 /msbuild.log
 /*std*.log

include/uibase/exceptions.h

@@ -3,6 +3,7 @@
 
 #include <stdexcept>
 
+#include <QObject>
 #include <QString>
 
 #include "dllimport.h"

include/uibase/imoinfo.h

@@ -35,6 +35,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 #include "imodlist.h"
 #include "iprofile.h"
 #include "versioninfo.h"
+#include "versioning.h"
 
 namespace MOBase
 {
@@ -121,7 +122,12 @@ class QDLLEXPORT IOrganizer : public QObject
   /**
    * @return the running version of Mod Organizer
    */
-  virtual VersionInfo appVersion() const = 0;
+  [[deprecated]] virtual VersionInfo appVersion() const = 0;
+
+  /**
+   * @return the running version of Mod Organizer
+   */
+  virtual Version version() const = 0;
 
   /**
    * @brief create a new mod with the specified name

include/uibase/versioning.h

@@ -0,0 +1,181 @@
+#pragma once
+
+#include <compare>
+#include <string>
+#include <variant>
+#include <vector>
+
+#include <QFlags>
+#include <QString>
+
+#include "dllimport.h"
+#include "exceptions.h"
+
+namespace MOBase
+{
+
+class InvalidVersionException : public Exception
+{
+public:
+  using Exception::Exception;
+};
+
+// class representing a Version object
+//
+// valid versions are an "extension" of SemVer (see https://semver.org/) with the
+// following tweaks:
+// - version can have a sub-patch, i.e., x.y.z.p, which are normally not allowed by
+//   SemVer
+// - non-integer pre-release identifiers are limited to dev, alpha (a), beta (b) and rc,
+//   and dev is lower than alpha (according to SemVer, the pre-release should be
+//   ordered alphabetically)
+// - the '-' between version and pre-release can be made optional, and also the '.'
+//   between pre-releases segment
+//
+// the extension from SemVer are only meant to be used by MO2 and USVFS versioning,
+// plugins and extensions should follow SemVer standard (and not use dev), this is
+// mainly
+// - for back-compatibility purposes, because USVFS versioning contains sub-patches and
+//   there are old MO2 releases with sub-patch
+// - because MO2 is not going to become MO3, so having an extra level make sense
+//
+// unlike VersionInfo, this class is immutable and only hold valid versions
+//
+class QDLLEXPORT Version
+{
+public:
+  enum class ParseMode
+  {
+    // official semver parsing with pre-release limited to dev, alpha/a, beta/b and rc
+    //
+    SemVer,
+
+    // MO2 parsing, e.g., 2.5.1rc1 - this either parse a string with no pre-release
+    // information (e.g. 2.5.1) or with a single pre-release + a version (e.g., 2.5.1a1
+    // or 2.5.2rc1)
+    //
+    // this mode can parse sub-patch (SemVer mode cannot)
+    //
+    MO2
+  };
+
+  enum class FormatMode
+  {
+    // show subpatch even if subpatch is 0
+    //
+    ForceSubPatch = 0b0001,
+
+    // do not add separators between version and pre-release (-) or between pre-release
+    // segments (.)
+    //
+    NoSeparator = 0b0010,
+
+    // uses short form for alpha and beta (a/b instead of alpha/beta)
+    //
+    ShortAlphaBeta = 0b0100,
+
+    // do not add metadata even if present
+    //
+    NoMetadata = 0b1000
+  };
+  Q_DECLARE_FLAGS(FormatModes, FormatMode);
+
+  // condensed format, no separator, short alpha/beta and no metadata
+  //
+  static constexpr auto FormatCondensed = FormatModes{
+      FormatMode::NoSeparator, FormatMode::ShortAlphaBeta, FormatMode::NoMetadata};
+
+  enum class ReleaseType
+  {
+    Development,       // -dev
+    Alpha,             // -alpha, -a
+    Beta,              // -beta, -b
+    ReleaseCandidate,  // -rc
+  };
+  using enum ReleaseType;
+
+public:  // parsing
+  // parse version from the given string, throw InvalidVersionException if the string
+  // cannot be parsed
+  //
+  static Version parse(QString const& value, ParseMode mode = ParseMode::SemVer);
+
+public:  // constructors
+  Version(int major, int minor, int patch, QString metadata = {});
+  Version(int major, int minor, int patch, int subpatch, QString metadata = {});
+
+  Version(int major, int minor, int patch, ReleaseType type, QString metadata = {});
+  Version(int major, int minor, int patch, int subpatch, ReleaseType type,
+          QString metadata = {});
+
+  Version(int major, int minor, int patch, ReleaseType type, int prerelease,
+          QString metadata = {});
+  Version(int major, int minor, int patch, int subpatch, ReleaseType type,
+          int prerelease, QString metadata = {});
+
+  Version(int major, int minor, int patch, int subpatch,
+          std::vector<std::variant<int, ReleaseType>> prereleases,
+          QString metadata = {});
+
+public:  // special member functions
+  Version(const Version&) = default;
+  Version(Version&&)      = default;
+
+  Version& operator=(const Version&) = default;
+  Version& operator=(Version&&)      = default;
+
+public:
+  // check if this version corresponds to a pre-release version (dev, alpha, beta, etc.)
+  //
+  bool isPreRelease() const { return !m_PreReleases.empty(); }
+
+  // retrieve major, minor, patch and sub-patch of this version
+  //
+  int major() const { return m_Major; }
+  int minor() const { return m_Minor; }
+  int patch() const { return m_Patch; }
+  int subpatch() const { return m_SubPatch; }
+
+  // retrieve pre-releases information for this version
+  //
+  const auto& preReleases() const { return m_PreReleases; }
+
+  // retrieve build metadata, if any, otherwise return an empty string
+  //
+  const auto& buildMetadata() const { return m_BuildMetadata; }
+
+  // convert this version to a string
+  //
+  QString string(const FormatModes& modes = {}) const;
+
+private:
+  // major.minor.patch
+  int m_Major, m_Minor, m_Patch, m_SubPatch;
+
+  // pre-release information
+  std::vector<std::variant<int, ReleaseType>> m_PreReleases;
+
+  // metadata
+  QString m_BuildMetadata;
+};
+
+QDLLEXPORT std::strong_ordering operator<=>(const Version& lhs, const Version& rhs);
+
+inline bool operator==(const Version& lhs, const Version& rhs)
+{
+  return (lhs <=> rhs) == 0;
+}
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(Version::FormatModes);
+
+}  // namespace MOBase
+
+template <class CharT>
+struct std::formatter<MOBase::Version, CharT> : std::formatter<QString, CharT>
+{
+  template <class FmtContext>
+  FmtContext::iterator format(const MOBase::Version& v, FmtContext& ctx) const
+  {
+    return std::formatter<QString, CharT>::format(v.string(), ctx);
+  }
+};

src/CMakeLists.txt

@@ -30,6 +30,7 @@ set(root_headers
 	../include/uibase/steamutility.h
 	../include/uibase/strings.h
 	../include/uibase/utility.h
+	../include/uibase/versioning.h
 	../include/uibase/versioninfo.h
 )
 set(interface_headers
@@ -115,14 +116,14 @@ mo2_target_sources(uibase
 	nxmurl.cpp
 	pch.cpp
 	pluginrequirements.cpp
-	pluginsetting.cpp
 	registry.cpp
 	report.cpp
 	safewritefile.cpp
 	scopeguard.cpp
 	steamutility.cpp
 	strings.cpp
 	utility.cpp
+	versioning.cpp
 	versioninfo.cpp
 )
 
@@ -133,7 +134,6 @@ mo2_target_sources(uibase
 	ifiletree.cpp
 	imodrepositorybridge.cpp
 	imoinfo.cpp
-	iplugininstaller.cpp
 )
 
 mo2_target_sources(uibase