cleaned up entry point for dpm core

src/dpm.cpp

@@ -149,16 +149,5 @@ int main( int argc, char* argv[] )
     }
 
     // execute the module
-    DPMErrorCategory execute_error = loader.execute_module(args.module_name, args.command);
-
-    std::string absolute_modules_path;
-    loader.get_module_path(absolute_modules_path);
-
-    // construct an error object
-    FlexDPMError result = make_error(execute_error);
-    result.module_name = args.module_name.c_str();
-    result.module_path = absolute_modules_path.c_str();
-
-    // pair result with a message and exit with the appropriate error code
-    return handle_error(result);
+    int return_code = main_execute_module( loader, args.module_name, args.command );
 }

src/dpm_interface.cpp

@@ -30,6 +30,8 @@
 
 #include "dpm_interface.hpp"
 
+#include <handlers.hpp>
+
 /*
  *  DPM Interface methods.
  *
@@ -185,4 +187,23 @@ int main_show_help() {
               << "  -h, --help               Show this help message\n\n"
               << "For module-specific help, use: dpm <module-name> help\n\n";
     return 0;
+}
+
+int main_execute_module( const ModuleLoader& loader, std::string module_name, std::string command ) {
+    DPMErrorCategory execute_error = loader.execute_module(module_name, command);
+    if (execute_error != DPMErrorCategory::SUCCESS) {
+        // get the absolute module path
+        std::string absolute_module_path = "";
+        loader.get_module_path(absolute_module_path);
+
+        // construct an error object
+        FlexDPMError result = make_error( execute_error );
+        result.module_name = module_name.c_str();
+        result.module_path = absolute_module_path.c_str();
+
+        // pair result with a message and return with the appropriate error code
+        return handle_error(result);
+    } else {
+        return 0;
+    }
 }