small build system tweaks

[chaz/yoink] / src / MainLayer.cc

diff --git a/src/MainLayer.cc b/src/MainLayer.cc
index 2266326402f89b475df8c1a57b3f4abd3dba9d37..2e687855dd73d03a557bcf2108d9940d1706ed4c 100644 (file)
--- a/src/MainLayer.cc
+++ b/src/MainLayer.cc
@@ -27,9 +27,9 @@
 *******************************************************************************/
 
 #include <cstdlib>             // atexit, getenv
-#include <cstring>
 #include <iostream>
 #include <string>
+#include <unistd.h>            // access
 
 #include <Moof/Dispatcher.hh>
 #include <Moof/Exception.hh>
@@ -46,6 +46,7 @@
 #if HAVE_CONFIG_H
 #include "config.h"
 #endif
+#include "version.h"
 
 
 MainLayer::MainLayer()
@@ -171,12 +172,14 @@ void MainLayer::contextRecreated(const Mf::Notification* note)
 
 void printUsage()
 {
-       std::cout << "Usage: "PACKAGE" [-h|--help] [OPTION=VALUE]..." << std::endl
+       std::cout << "Usage: "PACKAGE" [-h|--help] [-i|--info] [OPTION=VALUE]..." << std::endl
                          << "The alien-smashing action game." << std::endl
                          << std::endl
                          << "Options:" << std::endl
                          << "  -h, --help" << std::endl
                          << "      show this help and exit" << std::endl
+                         << "  -i, --info" << std::endl
+                         << "      show version and build information" << std::endl
                          << "  detail=1|2|3" << std::endl
                          << "      the level of detail of game scenes" << std::endl
                          << "  fullscreen=true|false" << std::endl
@@ -187,18 +190,82 @@ void printUsage()
                          << "See documentation for more options." << std::endl;
 }
 
+void printInfo(int argc, char* argv[])
+{
+       std::string assets;
+       std::string datadir;
+       std::string config;
+
+       assets.assign(YOINK_DATADIR);
+       int accessible = access(assets.c_str(), R_OK);
+       if (accessible != 0) assets += " (no access)";
+
+       char* temp = getenv("YOINK_DATADIR");
+       if (temp)
+       {
+               datadir = temp;
+               accessible = access(temp, R_OK);
+               if (accessible != 0) datadir += " (no access)";
+       }
+
+       temp = getenv("YOINKRC");
+       if (temp)
+       {
+               config = temp;
+               accessible = access(temp, R_OK);
+               if (accessible != 0) config += " (no access)";
+       }
+
+       std::cout << "   Executable: " << argv[0] << std::endl
+                         << "      Version: "VERSION << std::endl
+#ifdef __DATE__
+                         << "        Built: "__DATE__" "__TIME__ << std::endl
+#endif
+                         << "     Compiler: "COMPILER_STRING << std::endl
+                         << "       Assets: " << assets << std::endl
+                         << "Build options: "
+#ifdef NDEBUG
+                         << "-"
+#endif
+                         << "debug "
+#ifndef USE_DOUBLE_PRECISION
+                         << "-"
+#endif
+                         << "double-precision "
+#ifndef PROFILING_ENABLED
+                         << "-"
+#endif
+                         << "profile "
+#ifndef USE_THREADS
+                         << "-"
+#endif
+                         << "threads" << std::endl
+                         << "      YOINKRC: " << config << std::endl
+                         << "YOINK_DATADIR: " << datadir << std::endl;
+}
+
 void goodbye()
 {
        std::cout << std::endl << "Goodbye..." << std::endl << std::endl;
 }
 
+
+
 int main(int argc, char* argv[])
 {
-       if (argc > 1 &&
-                       (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0))
+       if (argc > 1)
        {
-               printUsage();
-               return 0;
+               std::string arg(argv[1]);
+               if (arg == "-h" || arg == "--help")
+               {
+                       printUsage();
+                       return 0;
+               }
+               else if (arg == "-i" || arg == "--info")
+               {
+                       printInfo(argc, argv);
+                       return 0;
+               }
        }
 
        std::cout << std::endl << PACKAGE_STRING << std::endl