HW2: Setup build env and basic code setup

homework_2/src/main.cpp

@@ -1,3 +1,78 @@
-int main(void) {
+/*!
+ * \file    main.cpp
+ * \brief   Main application file for PDS HW2 (MPI)
+ *
+ * \author
+ *    Christos Choutouridis AEM:8997
+ *    <cchoutou@ece.auth.gr>
+ */
+#include <exception>
+#include <iostream>
+
+#include <mpi.h>
+
+#include "matrix.hpp"
+#include "utils.hpp"
+#include "config.h"
+
+// Global session data
+session_t   session;
+
+/*!
+ * A small command line argument parser
+ * \return  The status of the operation
+ */
+bool get_options(int argc, char* argv[]){
+    bool status =true;
+
+    // iterate over the passed arguments
+    for (int i=1 ; i<argc ; ++i) {
+        std::string arg(argv[i]);     // get current argument
+
+        if (arg == "-x" || arg == "--xxxxx") {
+            if (i+2 < argc) {
+//                session.corpusMtxFile = std::string(argv[++i]);
+//                session.corpusDataSet = std::string(argv[++i]);
+            }
+            else
+                status = false;
+        }
+
+        else if (arg == "-v" || arg == "--verbose")
+            session.verbose = true;
+        else if (arg == "-h" || arg == "--help") {
+            std::cout << "distbitonic - A distributed bitonic sort\n\n";
+            std::cout << "distbitonic -x <> [-v]\n";
+            std::cout << '\n';
+            std::cout << "Options:\n\n";
+            std::cout << "   -v | --verbose\n";
+            std::cout << "      Request a more verbose output to stdout.\n\n";
+            std::cout << "   -h | --help\n";
+            std::cout << "      Prints this and exit.\n\n";
+            std::cout << "Examples:\n\n";
+            std::cout << "   ...Example case...:\n";
+            std::cout << "   > distbitonic -x <xxxxx>  \n\n";
+
+            exit(0);
+        }
+        else {   // parse error
+            std::cout << "Invocation error. Try -h for details.\n";
+            status = false;
+        }
+    }
+
+    return status;
+}
+
+int main(int argc, char* argv[]) try {
+    // try to read command line
+    if (!get_options(argc, argv))
+        exit(1);
+
     return 0;
+}
+catch (std::exception& e) {
+    //we probably pollute the user's screen. Comment `cerr << ...` if you don't like it.
+    std::cerr << "Error: " << e.what() << '\n';
+    exit(1);
 }