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80b53ffb1c
The main problem we're having with argument parsing is that at the
moment the caller looks for the first character looking like an end
of arguments (')') and calls make_arg_list() on the sub-string inside
the parenthesis.
Let's first change the way it works so that make_arg_list() also
consumes the parenthesis and returns the pointer to the first char not
consumed. This will later permit to refine each argument parsing.
For now there is no functional change.
94 lines
3.5 KiB
C
94 lines
3.5 KiB
C
/*
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* include/proto/arg.h
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* This file contains functions and macros declarations for generic argument parsing.
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*
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* Copyright 2012 Willy Tarreau <w@1wt.eu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _PROTO_ARG_H
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#define _PROTO_ARG_H
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#include <types/arg.h>
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/* Some macros used to build some arg list. We can declare various argument
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* combinations from 0 to 7 args using a single 32-bit integer. The first
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* argument of these macros is always the mandatory number of arguments, and
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* remaining ones are optional args. Note: ARGM() may also be used to return
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* the number of mandatory arguments in a mask.
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*/
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#define ARGM(m) \
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(uint64_t)(m & ARGM_MASK)
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#define ARG1(m, t1) \
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(ARGM(m) + ((uint64_t)ARGT_##t1 << (ARGM_BITS)))
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#define ARG2(m, t1, t2) \
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(ARG1(m, t1) + ((uint64_t)ARGT_##t2 << (ARGM_BITS + ARGT_BITS)))
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#define ARG3(m, t1, t2, t3) \
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(ARG2(m, t1, t2) + ((uint64_t)ARGT_##t3 << (ARGM_BITS + ARGT_BITS * 2)))
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#define ARG4(m, t1, t2, t3, t4) \
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(ARG3(m, t1, t2, t3) + ((uint64_t)ARGT_##t4 << (ARGM_BITS + ARGT_BITS * 3)))
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#define ARG5(m, t1, t2, t3, t4, t5) \
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(ARG4(m, t1, t2, t3, t4) + ((uint64_t)ARGT_##t5 << (ARGM_BITS + ARGT_BITS * 4)))
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#define ARG6(m, t1, t2, t3, t4, t5, t6) \
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(ARG5(m, t1, t2, t3, t4, t5) + ((uint64_t)ARGT_##t6 << (ARGM_BITS + ARGT_BITS * 5)))
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#define ARG7(m, t1, t2, t3, t4, t5, t6, t7) \
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(ARG6(m, t1, t2, t3, t4, t5, t6) + ((uint64_t)ARGT_##t7 << (ARGM_BITS + ARGT_BITS * 6)))
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#define ARG8(m, t1, t2, t3, t4, t5, t6, t7, t8) \
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(ARG7(m, t1, t2, t3, t4, t5, t6, t7) + ((uint64_t)ARGT_##t8 << (ARGM_BITS + ARGT_BITS * 7)))
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#define ARG9(m, t1, t2, t3, t4, t5, t6, t7, t8, t9) \
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(ARG8(m, t1, t2, t3, t4, t5, t6, t7, t8) + ((uint64_t)ARGT_##t9 << (ARGM_BITS + ARGT_BITS * 8)))
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#define ARG10(m, t1, t2, t3, t4, t5, t6, t7, t8, t9, t10) \
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(ARG9(m, t1, t2, t3, t4, t5, t6, t7, t8, t9) + ((uint64_t)ARGT_##t10 << (ARGM_BITS + ARGT_BITS * 9)))
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#define ARG11(m, t1, t2, t3, t4, t5, t6, t7, t8, t9, t10, t11) \
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(ARG10(m, t1, t2, t3, t4, t5, t6, t7, t8, t9, t10) + ((uint64_t)ARGT_##t11 << (ARGM_BITS + ARGT_BITS * 10)))
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#define ARG12(m, t1, t2, t3, t4, t5, t6, t7, t8, t9, t10, t11, t12) \
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(ARG11(m, t1, t2, t3, t4, t5, t6, t7, t8, t9, t10, t11) + ((uint64_t)ARGT_##t12 << (ARGM_BITS + ARGT_BITS * 11)))
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/* Mapping between argument number and literal description. */
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extern const char *arg_type_names[];
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/* This dummy arg list may be used by default when no arg is found, it helps
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* parsers by removing pointer checks.
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*/
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extern struct arg empty_arg_list[ARGM_NBARGS];
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struct arg_list *arg_list_clone(const struct arg_list *orig);
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struct arg_list *arg_list_add(struct arg_list *orig, struct arg *arg, int pos);
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int make_arg_list(const char *in, int len, uint64_t mask, struct arg **argp,
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char **err_msg, const char **end_ptr, int *err_arg,
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struct arg_list *al);
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#endif /* _PROTO_ARG_H */
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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