+ } /* while command has not been fully processed */
+ } /* while command is not yet given */
+ } /* while command is not executed */
+
+ /* command completely executed; we return true. */
+ return true;
+}
+
+/*
+ * MAIN PROGRAM
+ *
+ * Adventure (rev 2: 20 treasures)
+ * History: Original idea & 5-treasure version (adventures) by Willie Crowther
+ * 15-treasure version (adventure) by Don Woods, April-June 1977
+ * 20-treasure version (rev 2) by Don Woods, August 1978
+ * Errata fixed: 78/12/25
+ * Revived 2017 as Open Adventure.
+ */
+
+int main(int argc, char *argv[])
+{
+ int ch;
+
+ /* Options. */
+
+#if defined ADVENT_AUTOSAVE
+ const char* opts = "l:oa:";
+ const char* usage = "Usage: %s [-l logfilename] [-o] [-a filename] [script...]\n";
+ FILE *rfp = NULL;
+ const char* autosave_filename = NULL;
+#elif !defined ADVENT_NOSAVE
+ const char* opts = "l:or:";
+ const char* usage = "Usage: %s [-l logfilename] [-o] [-r restorefilename] [script...]\n";
+ FILE *rfp = NULL;
+#else
+ const char* opts = "l:o";
+ const char* usage = "Usage: %s [-l logfilename] [-o] [script...]\n";
+#endif
+ while ((ch = getopt(argc, argv, opts)) != EOF) {
+ switch (ch) {
+ case 'l':
+ settings.logfp = fopen(optarg, "w");
+ if (settings.logfp == NULL)
+ fprintf(stderr,
+ "advent: can't open logfile %s for write\n",
+ optarg);
+ signal(SIGINT, sig_handler);
+ break;
+ case 'o':
+ settings.oldstyle = true;
+ settings.prompt = false;
+ break;
+#ifdef ADVENT_AUTOSAVE
+ case 'a':
+ rfp = fopen(optarg, READ_MODE);
+ autosave_filename = optarg;
+ signal(SIGHUP, sig_handler);
+ signal(SIGTERM, sig_handler);
+ break;
+#elif !defined ADVENT_NOSAVE
+ case 'r':
+ rfp = fopen(optarg, "r");
+ if (rfp == NULL)
+ fprintf(stderr,
+ "advent: can't open save file %s for read\n",
+ optarg);
+ break;
+#endif
+ default:
+ fprintf(stderr,
+ usage, argv[0]);
+ fprintf(stderr,
+ " -l create a log file of your game named as specified'\n");
+ fprintf(stderr,
+ " -o 'oldstyle' (no prompt, no command editing, displays 'Initialising...')\n");
+#if defined ADVENT_AUTOSAVE
+ fprintf(stderr,
+ " -a automatic save/restore from specified saved game file\n");
+#elif !defined ADVENT_NOSAVE
+ fprintf(stderr,
+ " -r restore from specified saved game file\n");
+#endif
+ exit(EXIT_FAILURE);
+ break;
+ }