engine: common: add printf-like version of Cvar_Get function.

engine/common/cvar.c

@@ -469,6 +469,23 @@ convar_t *Cvar_Get( const char *name, const char *value, int flags, const char *
 	return var;
 }
 
+/*
+============
+Cvar_Getf
+============
+*/
+convar_t *Cvar_Getf( const char *var_name, int flags, const char *description, const char *format, ... )
+{
+	char value[MAX_VA_STRING];
+	va_list args;
+
+	va_start( args, format );
+	Q_vsnprintf( value, sizeof( value ), format, args );
+	va_end( args );
+
+	return Cvar_Get( var_name, value, flags, description );
+}
+
 /*
 ============
 Cvar_RegisterVariable

engine/common/cvar.h

@@ -63,6 +63,7 @@ cvar_t *Cvar_GetList( void );
 convar_t *Cvar_FindVarExt( const char *var_name, int ignore_group );
 void Cvar_RegisterVariable( convar_t *var );
 convar_t *Cvar_Get( const char *var_name, const char *value, int flags, const char *description );
+convar_t *Cvar_Getf( const char *var_name, int flags, const char *description, const char *format, ... ) _format( 4 );
 void Cvar_LookupVars( int checkbit, void *buffer, void *ptr, setpair_t callback );
 void Cvar_FullSet( const char *var_name, const char *value, int flags );
 void Cvar_DirectSet( convar_t *var, const char *value );