UI: fix debuggee launch

Author: chrisws

src/platform/sdl/main.cpp

@@ -52,7 +52,7 @@ static struct option OPTIONS[] = {
   {0, 0, 0, 0}
 };
 
-const char *g_appPath;
+char g_appPath[OS_PATHNAME_SIZE + 1];
 int g_debugPort = 4000;
 
 void appLog(const char *format, ...) {
@@ -209,6 +209,22 @@ void printKeywords() {
   }
 }
 
+void setupAppPath(const char *path) {
+  g_appPath[0] = '\0';
+  if (path[0] == '/' || (path[1] == ':' && path[2] == '/')) {
+    // full path or C:/
+    strcpy(g_appPath, path);
+  } else {
+    // relative path
+    char cwd[OS_PATHNAME_SIZE + 1];
+    cwd[0] = '\0';
+    getcwd(cwd, sizeof(cwd) - 1);
+    strcat(g_appPath, cwd);
+    strcat(g_appPath, "/");
+    strcat(g_appPath, path);
+  }
+}
+
 void showHelp() {
   fprintf(stdout,
           "SmallBASIC version %s - kw:%d, pc:%d, fc:%d, ae:%d I=%d N=%d\n\n",
@@ -229,10 +245,10 @@ void showHelp() {
 int main(int argc, char* argv[]) {
   logEntered();
 
+  setupAppPath(argv[0]);
   opt_command[0] = '\0';
   opt_verbose = false;
   opt_quiet = true;
-  g_appPath = argv[0];
 
   char *fontFamily = NULL;
   char *runFile = NULL;

src/platform/sdl/syswm.cpp

@@ -12,7 +12,7 @@
 #define DEFAULT_FONT_SIZE 12
 #define DEFAULT_FONT_SIZE_PTS 11
 
-extern const char *g_appPath;
+extern char g_appPath[];
 extern int g_debugPort;
 
 #if defined(_Win32)
@@ -54,6 +54,7 @@ void launchDebug(const char *file) {
 
 #else
 #include <unistd.h>
+#include <errno.h>
 
 void loadIcon(SDL_Window *window) {
 }
@@ -73,7 +74,10 @@ void launchDebug(const char *file) {
   case 0:
     // child process
     sprintf(port, "-p %d", g_debugPort);
-    execl(g_appPath, g_appPath, port, "-d", file, (char *)0);
+    if (execl(g_appPath, g_appPath, port, "-d", file, (char *)0) == -1) {
+      fprintf(stderr, "exec failed %s\n", strerror(errno));
+      exit(1);
+    }
     break;
   default:
     // parent process - continue

src/ui/system.cpp

@@ -731,7 +731,7 @@ void System::showMenu() {
         _systemMenu[index++] = MENU_RUN;
         _systemMenu[index++] = MENU_DEBUG;
         _systemMenu[index++] = MENU_OUTPUT;
-      } else {
+      } else if (isRunning()) {
         items->add(new String("Cut"));
         items->add(new String("Copy"));
         items->add(new String("Paste"));