1 files changed, 54 insertions, 0 deletions
diff --git a/src/ja.c b/src/ja.c
new file mode 100644
index 0000000..6b37b02
--- /dev/null
+++ b/src/ja.c
@@ -0,0 +1,54 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "util/map.h"
+#include "util/versie.h"
+
+static void usage(FILE *f) {
+  fprintf(f,
+      "Gebruik: ja [-hV] [touwtje]\n"
+      "\n"
+      "Exporteer een touwtje oneindig lang.\n"
+      "\n"
+      "  -h    Toon deze hulptekst\n"
+      "  -V    Toon versienummer\n");
+}
+
+// Returns pointer to argument array containing the file names
+static char** parse_options(int argc, char **argv) {
+  int opt;
+  while ((opt = getopt(argc, argv, "hV")) != -1) {
+    switch (opt) {
+      case 'h':
+        usage(stdout);
+        exit(0);
+
+      case 'V':
+        drukkedoos_print_versie(stdout, "ja");
+        exit(0);
+
+      case '?':
+        usage(stderr);
+        exit(1);
+    }
+  }
+
+  return argv + optind;
+}
+
+int entry_ja(int argc, char **argv) {
+  char **args = parse_options(argc, argv);
+
+  const char *touwtje = "ja";
+  if (*args != NULL) {
+    touwtje = *args;
+  }
+
+  for (;;) {
+    puts(touwtje);
+  }
+
+  return 0;
+}