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authorMattias Andrée <maandree@kth.se>2021-02-27 13:13:55 +0100
committerMattias Andrée <maandree@kth.se>2021-02-27 13:13:55 +0100
commit5635aa0fe22734cd4330eb4aa330b60d2e1b109f (patch)
tree052e01320739979db583978f48223c594e9ca548 /arg.h
parentm (diff)
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Remove -e flag, remove long options, start rewriting in C, add support for changing shell
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'arg.h')
-rw-r--r--arg.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/arg.h b/arg.h
new file mode 100644
index 0000000..79d054c
--- /dev/null
+++ b/arg.h
@@ -0,0 +1,44 @@
+/*
+ * 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][0] && argv[0][1];\
+ argc--, argv++) {\
+ char argc_;\
+ char **argv_;\
+ int brk_;\
+ if (argv[0][0] == '-') {\
+ 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 }\
+ } else {\
+ break;\
+ }\
+ }
+
+#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])))
+
+#endif