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/*
* include/proto/arg.h
* This file contains functions and macros declarations for generic argument parsing.
*
* Copyright 2012 Willy Tarreau <w@1wt.eu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, version 2.1
* exclusively.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _PROTO_ARG_H
#define _PROTO_ARG_H
#include <types/arg.h>
/* Some macros used to build some arg list. We can declare various argument
* combinations from 0 to 7 args using a single 32-bit integer. The first
* argument of these macros is always the mandatory number of arguments, and
* remaining ones are optional args. Note: ARGM() may also be used to return
* the number of mandatory arguments in a mask.
*/
#define ARGM(m) \
(m & 15)
#define ARG1(m, t1) \
(ARGM(m) + (ARGT_##t1 << 4))
#define ARG2(m, t1, t2) \
(ARG1(m, t1) + (ARGT_##t2 << 8))
#define ARG3(m, t1, t2, t3) \
(ARG2(m, t1, t2) + (ARGT_##t3 << 12))
#define ARG4(m, t1, t2, t3, t4) \
(ARG3(m, t1, t2, t3) + (ARGT_##t4 << 16))
#define ARG5(m, t1, t2, t3, t4, t5) \
(ARG4(m, t1, t2, t3, t4) + (ARGT_##t5 << 20))
#define ARG6(m, t1, t2, t3, t4, t5, t6) \
(ARG5(m, t1, t2, t3, t4, t5) + (ARGT_##t6 << 24))
#define ARG7(m, t1, t2, t3, t4, t5, t6, t7) \
(ARG6(m, t1, t2, t3, t4, t5, t6) + (ARGT_##t7 << 28))
/* This dummy arg list may be used by default when no arg is found, it helps
* parsers by removing pointer checks.
*/
extern struct arg empty_arg_list[8];
struct arg_list *arg_list_clone(const struct arg_list *orig);
struct arg_list *arg_list_add(struct arg_list *orig, struct arg *arg, int pos);
int make_arg_list(const char *in, int len, unsigned int mask, struct arg **argp,
char **err_msg, const char **err_ptr, int *err_arg,
struct arg_list *al);
#endif /* _PROTO_ARG_H */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/
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