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	whoops add arg.h - sdhcp - simple dhcp client
	git clone git://git.codemadness.org/sdhcp
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	---
	commit b97fe80b0c80d16802031d321f8aeb4f642ba37a
	parent ba2f7b64cceb89657c54733fbfdfb0b127427da1
	Author: Hiltjo Posthuma <[email protected]>
	Date: Fri, 25 Apr 2014 22:02:57 +0200

	whoops add arg.h

	Signed-off-by: Hiltjo Posthuma <[email protected]>

	Diffstat:
	A arg.h \| 63 +++++++++++++++++++++++++++++…

	1 file changed, 63 insertions(+), 0 deletions(-)
	---
	diff --git a/arg.h b/arg.h
	@@ -0,0 +1,63 @@
	+/*
	+ * Copy me if you can.
	+ * by 20h
	+ */
	+
	+#ifndef ARG_H__
	+#define ARG_H__
	+
	+extern char *argv0;
	+
	+/* use main(int argc, char argv[]) /
	+#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\
	+ argv[0] && argv[0][1]\
	+ && argv[0][0] == '-';\
	+ argc--, argv++) {\
	+ char argc_;\
	+ char **argv_;\
	+ int brk_;\
	+ if (argv[0][1] == '-' && argv[0][2] == '\0') {\
	+ argv++;\
	+ argc--;\
	+ break;\
	+ }\
	+ for (brk_ = 0, argv[0]++, argv_ = argv;\
	+ argv[0][0] && !brk_;\
	+ argv[0]++) {\
	+ if (argv_ != argv)\
	+ break;\
	+ argc_ = argv[0][0];\
	+ switch (argc_)
	+
	+/* Handles obsolete -NUM syntax */
	+#define ARGNUM case '0':\
	+ case '1':\
	+ case '2':\
	+ case '3':\
	+ case '4':\
	+ case '5':\
	+ case '6':\
	+ case '7':\
	+ case '8':\
	+ case '9'
	+
	+#define ARGEND }\
	+ }
	+
	+#define ARGC() argc_
	+
	+#define ARGNUMF(base) (brk_ = 1, estrtol(argv[0], (base)))
	+
	+#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