Plugin API: Add RmReplaceVariables function

Library/Export.cpp

@@ -46,6 +46,17 @@ double __stdcall RmReadFormula(void* rm, LPCWSTR option, double defValue)
 	return parser.ReadFloat(measure->GetName(), option, defValue);
 }
 
+LPCWSTR __stdcall RmReplaceVariables(void* rm, LPCWSTR str)
+{
+	NULLCHECK(str);
+
+	MeasurePlugin* measure = (MeasurePlugin*)rm;
+	ConfigParser& parser = measure->GetMeterWindow()->GetParser();
+	g_Buffer = str;
+	parser.ReplaceVariables(g_Buffer);
+	return g_Buffer.c_str();
+}
+
 LPCWSTR __stdcall RmPathToAbsolute(void* rm, LPCWSTR relativePath)
 {
 	NULLCHECK(relativePath);

Library/Exports.def

@@ -2,8 +2,10 @@ LIBRARY
 EXPORTS
 	; Note: If new functions are added, the Rainmeter.lib files in Plugins\API\x32 and Plugins\API\x64
 	; must be replaced by the corresponding file in Library\x32\Release and Library\x64\Release.
+	; Set '<ExcludeTests>true</ExcludeTests>' in Rainmeter.props first to minimize the .lib size.
 	RmReadString
 	RmReadFormula
+	RmReplaceVariables
 	RmPathToAbsolute
 	RmExecute
 	RmGet

Plugins/API/RainmeterAPI.cs

@@ -44,6 +44,9 @@ namespace Rainmeter
         [DllImport("Rainmeter.dll", CharSet = CharSet.Auto)]
         private extern static unsafe double RmReadFormula(void* rm, char* option, double defValue);
 
+        [DllImport("Rainmeter.dll", CharSet = CharSet.Auto)]
+        private extern static unsafe char* RmReplaceVariables(void* rm, char* str);
+
         [DllImport("Rainmeter.dll", CharSet = CharSet.Auto)]
         private extern static unsafe char* RmPathToAbsolute(void* rm, char* relativePath);
 
@@ -87,6 +90,12 @@ namespace Rainmeter
             return (int)RmReadFormula((void*)m_Rm, ToUnsafe(option), defValue);
         }
 
+        public unsafe string ReplaceVariables(string str)
+        {
+            char* value = RmReplaceVariables((void*)m_Rm, ToUnsafe(str));
+            return new string(value);
+        }
+
         public unsafe string GetMeasureName()
         {
             char* value = (char*)RmGet((void*)m_Rm, 0);

Plugins/API/RainmeterAPI.h

@@ -39,6 +39,8 @@ LIBRARY_EXPORT LPCWSTR __stdcall RmReadString(void* rm, LPCWSTR option, LPCWSTR
 
 LIBRARY_EXPORT double __stdcall RmReadFormula(void* rm, LPCWSTR option, double defValue);
 
+LIBRARY_EXPORT LPCWSTR __stdcall RmReplaceVariables(void* rm, LPCWSTR str);
+
 LIBRARY_EXPORT LPCWSTR __stdcall RmPathToAbsolute(void* rm, LPCWSTR relativePath);
 
 LIBRARY_EXPORT void __stdcall RmExecute(void* skin, LPCWSTR command);