ref: 4e0a7b0dcda8c4d9f97125339b25da3572e30576
parent: dd8633df2eb043dd66d75cd15b80f4d1ed5b2112
author: tmpfile <tmpfile@users.noreply.github.com>
date: Sat Jun 17 10:56:08 CDT 2017
mkinitfs: sync arg.h with upstream For reference: http://git.r-36.net/nldev/tree/arg.h
--- a/arg.h
+++ b/arg.h
@@ -3,37 +3,46 @@
* by 20h
*/
-#ifndef __ARG_H__
-#define __ARG_H__
+#ifndef ARG_H__
+#define ARG_H__
-#define USED(x) ((void)(x))
+extern char *argv0;
-#define ARGBEGIN for (argv++, argc--;\
- argv[0] && argv[0][1]\
- && argv[0][0] == '-';\
+/* use main(int argc, char *argv[]) */
+#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\
+ argv[0] && argv[0][0] == '-'\
+ && argv[0][1];\
argc--, argv++) {\- char _argc;\
- char **_argv;\
+ char argc_;\
+ char **argv_;\
+ int brk_;\
if (argv[0][1] == '-' && argv[0][2] == '\0') {\argv++;\
argc--;\
break;\
}\
- for (argv[0]++, _argv = argv; argv[0][0];\
+ for (brk_ = 0, argv[0]++, argv_ = argv;\
+ argv[0][0] && !brk_;\
argv[0]++) {\- if (_argv != argv)\
+ if (argv_ != argv)\
break;\
- _argc = argv[0][0];\
- switch (_argc)
-
+ argc_ = argv[0][0];\
+ switch (argc_)
#define ARGEND }\
- USED(_argc);\
- }\
- USED(argv);\
- USED(argc);
+ }
-#define EARGF(x) ((argv[1] == NULL)? ((x), abort(), (char *)0) :\
- (argc--, argv++, argv[0]))
+#define ARGC() argc_
-#endif
+#define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\
+ ((x), abort(), (char *)0) :\
+ (brk_ = 1, (argv[0][1] != '\0')?\
+ (&argv[0][1]) :\
+ (argc--, argv++, argv[0])))
+#define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\
+ (char *)0 :\
+ (brk_ = 1, (argv[0][1] != '\0')?\
+ (&argv[0][1]) :\
+ (argc--, argv++, argv[0])))
+
+#endif