add basic window functions, option parsing, and main loop

1 files changed, 55 insertions, 0 deletions

diff --git a/src/options/honey_options.c b/src/options/honey_options.c
new file mode 100644
index 0000000..cf93588
--- /dev/null
+++ b/src/options/honey_options.c
@@ -0,0 +1,55 @@
+#include <stdio.h>
+#include <unistd.h> /* todo: create windows-compatible alternative */
+
+#include "options/honey_options.h"
+
+
+static void print_usage(const char *program_name)
+{
+   printf("Usage: %s [OPTIONS]\n"
+	  "  -v         Increase output verbosity (-vvv displays every log message)\n"
+	  "  -q         Decrease output verbosity (-qqq suppresses even fatal errors)\n"
+	  "  -h         Print this help message and exit\n"
+	  "  -s SCRIPT  Load SCRIPT as the entry point instead of 'main.lua'\n",
+	  program_name);
+}
+
+
+int parse_options(struct honey_options *opts, int argc, char **argv)
+{
+   opts->main_script = "main.lua";
+   opts->log_level = WARN;
+   opts->display_help = 0;
+
+   int opt;
+   const char *flags = "hqvs:";
+   while ((opt = getopt(argc, argv, flags)) != -1) {
+      switch (opt) {
+      case 'q':
+	 opts->log_level -= 1;
+	 break;
+
+      case 'v':
+	 opts->log_level += 1;
+	 break;
+
+      case 'h':
+	 print_usage(argv[0]);
+	 opts->display_help = 1;
+	 return 1;
+
+      case 's':
+	 opts->main_script = optarg;
+	 break;
+
+      default:
+	 print_usage(argv[0]);
+	 return 0;
+      }
+   }
+
+   honey_log_set_level(opts->log_level);
+   honey_log_set_file(stderr);
+
+   return 1;
+}