a04e740593
* stdio/printf-parse.h: New file, mostly written by drepper. * stdio/vfprintf.c: Rewritten, mostly by drepper. * stdio/printf-prs.c: Rewritten. * stdio/Makefile (distribute): Add printf-parse.h. Thu Mar 23 22:03:44 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * sysdeps/unix/start.c [! NO_UNDERSCORES]: Don't declare _start with asm name. Just do a ".set start, __start". * malloc/realloc.c: Call _free_internal instead of free. * stdlib/Makefile: All the mpn stuff moved here from stdio/Makefile.
73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/* Copyright (C) 1991, 1992, 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C 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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#include <printf.h>
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#include <stdlib.h>
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#include <string.h>
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#include "printf-parse.h"
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size_t
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parse_printf_format (fmt, n, argtypes)
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const char *fmt;
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size_t n;
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int *argtypes;
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{
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size_t nargs; /* Number of arguments. */
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size_t max_ref_arg; /* Highest index used in a positional arg. */
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struct printf_spec spec;
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nargs = 0;
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max_ref_arg = 0;
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/* Search for format specifications. */
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for (fmt = find_spec (fmt); *fmt != '\0'; fmt = spec.next_fmt)
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{
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/* Parse this spec. */
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nargs += parse_one_spec (fmt, nargs, &spec, &max_ref_arg);
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/* If the width is determined by an argument this is an int. */
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if (spec.width_arg != -1 && spec.width_arg < n)
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argtypes[spec.width_arg] = PA_INT;
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/* If the precision is determined by an argument this is an int. */
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if (spec.prec_arg != -1 && spec.prec_arg < n)
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argtypes[spec.prec_arg] = PA_INT;
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if (spec.data_arg < n)
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switch (spec.ndata_args)
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{
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case 0: /* No arguments. */
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break;
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case 1: /* One argument; we already have the type. */
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argtypes[spec.data_arg] = spec.data_arg_type;
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break;
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default:
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/* We have more than one argument for this format spec. We must
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call the arginfo function again to determine all the types. */
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(void) (*__printf_arginfo_table[spec.info.spec])
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(&spec.info, n - spec.data_arg, &argtypes[spec.data_arg]);
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break;
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}
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}
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return MAX (nargs, max_ref_arg);
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}
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