Adopting arg.h with more flexible cmd handling.

1 files changed, 55 insertions, 0 deletions

diff --git a/arg.h b/arg.h
new file mode 100644
index 0000000..2b189fe
--- /dev/null
+++ b/arg.h
@@ -0,0 +1,55 @@
+/*
+ * Copy me if you can.
+ * by 20h
+ */
+
+#ifndef __ARG_H__
+#define __ARG_H__
+
+extern char *argv0;
+
+#define USED(x)         ((void)(x))
+
+/* 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)
+
+#define ARGEND                  }\
+                                USED(_argc);\
+                        }\
+                        USED(argv);\
+                        USED(argc);
+
+#define ARGC()          _argc
+
+#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
+