ulib Add ARG_INT type to argument parser

ulib/args/args.c

@@ -22,6 +22,10 @@ int32_t parse_args(char **argv, size_t argc, Arg *defs) {
               case ARG_BOOL:
                 *((bool *)def->ptr) = string_strcmp(argv[i+1], "yes") == 0;
                 break;
+              case ARG_INT: {
+                char *end;
+                *((int32_t *)def->ptr) = string_conv_strtol(argv[i+1], &end, 10);
+              } break;
             }
             i++;
           }

ulib/args/args.h

@@ -10,7 +10,11 @@ size_t argslen(void);
 
 typedef struct {
   char *shortname;
-  enum { ARG_STRING, ARG_BOOL } expected_value;
+  enum {
+    ARG_STRING,
+    ARG_BOOL,
+    ARG_INT,
+  } expected_value;
   void *ptr;
   bool end;
 } Arg;