commit 63bafbf1d1abca69338dd759dc545fd6693e38fb
Author: Laslo Hunhold <[email protected]>
AuthorDate: Wed Aug 2 08:38:06 2017 +0200
Commit: Laslo Hunhold <[email protected]>
CommitDate: Wed Aug 2 08:38:06 2017 +0200
Import rewritten arg.h from farbfeld
diff --git a/arg.h b/arg.h
index 0b23c53..003f8ec 100644
--- a/arg.h
+++ b/arg.h
@@ -1,65 +1,55 @@
/*
- * Copy me if you can.
- * by 20h
+ * ISC-License
+ *
+ * (c) 2017 Laslo Hunhold <[email protected]>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+ * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
*/
-
-#ifndef ARG_H__
-#define ARG_H__
+#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][0] == '-'\
- && argv[0][1];\
- 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() (brk_ = 1, estrtonum(argv[0], 0, INT_MAX))
-
-#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])))
-
-#define LNGARG() &argv[0][0]
+/* int main(int argc, char *argv[]) */
+#define ARGBEGIN for (argv0 = *argv, argc--, argv++;
\
+ *argv && (*argv)[0] == '-' && (*argv)[1]; argc--,
argv++) { \
+ int argparsed;
\
+ if ((*argv)[1] == '-' && (*argv)[2] == '\0') {
\
+ argc--, argv++;
\
+ break;
\
+ }
\
+ for (argparsed = 0, (*argv)++; (*argv)[0]; (*argv)++) {
\
+ switch((*argv)[0])
+#define ARGEND if (argparsed) {
\
+ if ((*argv)[1] != '\0') {
\
+ break;
\
+ } else {
\
+ argc--, argv++;
\
+ break;
\
+ }
\
+ }
\
+ }
\
+ }
+#define ARGC() *argv[0]
+#define ARGF_(x) (((*argv)[1] == '\0' && !*(argv + 1)) ? \
+ (x) : \
+ (argparsed = 1, ((*argv)[1] != '\0') ? \
+ (&(*argv)[1]) : \
+ (*(argv + 1)) \
+ ) \
+ )
+#define EARGF(x) ARGF_(((x), exit(1), (char *)0))
+#define ARGF() ARGF_((char *)0)
#endif
