Move OpenMW version information to a textfile instead of compiling it in

Now we don't need to recompile 3 .cpp files and re-link whenever the current git HEAD changes.

components/version/version.cpp

@@ -0,0 +1,41 @@
+#include "version.hpp"
+
+#include <boost/filesystem/path.hpp>
+#include <boost/filesystem/fstream.hpp>
+
+namespace Version
+{
+
+Version getOpenmwVersion(const std::string &resourcePath)
+{
+    boost::filesystem::path path (resourcePath + "/version");
+
+    boost::filesystem::ifstream stream (path);
+
+    Version v;
+    std::getline(stream, v.mVersion);
+    std::getline(stream, v.mCommitHash);
+    std::getline(stream, v.mTagHash);
+    return v;
+}
+
+std::string Version::describe()
+{
+    std::string str = "OpenMW version " + mVersion;
+    std::string rev = mCommitHash;
+    std::string tag = mTagHash;
+    if (!rev.empty() && !tag.empty())
+    {
+        rev = rev.substr(0, 10);
+        str += "\nRevision: " + rev;
+    }
+    return str;
+}
+
+std::string getOpenmwVersionDescription(const std::string &resourcePath)
+{
+    Version v = getOpenmwVersion(resourcePath);
+    return v.describe();
+}
+
+}

components/version/version.hpp

@@ -0,0 +1,28 @@
+#ifndef VERSION_HPP
+#define VERSION_HPP
+
+#include <string>
+
+namespace Version
+{
+
+    struct Version
+    {
+        std::string mVersion;
+        std::string mCommitHash;
+        std::string mTagHash;
+
+        std::string describe();
+    };
+
+    /// Read OpenMW version from the version file located in resourcePath.
+    Version getOpenmwVersion(const std::string& resourcePath);
+
+    /// Helper function to getOpenmwVersion and describe() it
+    std::string getOpenmwVersionDescription(const std::string& resourcePath);
+
+}
+
+
+#endif // VERSION_HPP
+

components/version/version.hpp.cmake

@@ -1,13 +0,0 @@
-#ifndef VERSION_HPP
-#define VERSION_HPP
-
-#define OPENMW_VERSION_MAJOR @OPENMW_VERSION_MAJOR@
-#define OPENMW_VERSION_MINOR @OPENMW_VERSION_MINOR@
-#define OPENMW_VERSION_RELEASE @OPENMW_VERSION_RELEASE@
-#define OPENMW_VERSION "@OPENMW_VERSION@"
-
-#define OPENMW_VERSION_COMMITHASH "@OPENMW_VERSION_COMMITHASH@"
-#define OPENMW_VERSION_TAGHASH "@OPENMW_VERSION_TAGHASH@"
-
-#endif // VERSION_HPP
-