Provide singleton class for version information

src/common/Version.cpp

@@ -0,0 +1,67 @@
+#include "common/Version.hpp"
+
+#include "common/Modes.hpp"
+
+#define UGLYMACROHACK1(s) #s
+#define FROM_EXTERNAL_DEFINE(s) UGLYMACROHACK1(s)
+
+namespace chatterino {
+
+Version::Version()
+{
+    // Version
+    this->version_ = CHATTERINO_VERSION;
+
+    // Commit hash
+    this->commitHash_ =
+        QString(FROM_EXTERNAL_DEFINE(CHATTERINO_GIT_HASH)).remove('"');
+
+    // Date of build
+#ifdef CHATTERINO_NIGHTLY_VERSION_STRING
+    this->dateOfBuild_ =
+        QString(FROM_EXTERNAL_DEFINE(CHATTERINO_NIGHTLY_VERSION_STRING))
+            .remove('"');
+#endif
+
+    // "Full" version string, as displayed in window title
+    this->fullVersion_ = "Chatterino ";
+    if (Modes::getInstance().isNightly)
+    {
+        this->fullVersion_ += "Nightly ";
+    }
+
+    this->fullVersion_ += this->version_;
+
+    if (Modes::getInstance().isNightly)
+    {
+        this->fullVersion_ += this->dateOfBuild_;
+    }
+}
+
+const Version &Version::getInstance()
+{
+    static Version instance;
+    return instance;
+}
+
+const QString &Version::getVersion() const
+{
+    return this->version_;
+}
+
+const QString &Version::getFullVersion() const
+{
+    return this->fullVersion_;
+}
+
+const QString &Version::getCommitHash() const
+{
+    return this->commitHash_;
+}
+
+const QString &Version::getDateOfBuild() const
+{
+    return this->dateOfBuild_;
+}
+
+}  // namespace chatterino