diff options
Diffstat (limited to 'REORG.TODO/stdio-common/printf-prs.c')
| -rw-r--r-- | REORG.TODO/stdio-common/printf-prs.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/REORG.TODO/stdio-common/printf-prs.c b/REORG.TODO/stdio-common/printf-prs.c new file mode 100644 index 0000000000..d63855612a --- /dev/null +++ b/REORG.TODO/stdio-common/printf-prs.c @@ -0,0 +1,102 @@ +/* Copyright (C) 1991-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C 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; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C 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 the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <stdio.h> +#include <printf.h> +#include <stdlib.h> +#include <string.h> +#include <wchar.h> +#include <sys/param.h> + +#include "../locale/localeinfo.h" + +#ifndef COMPILE_WPRINTF +# define CHAR_T char +# define UCHAR_T unsigned char +# define INT_T int +# define L_(Str) Str +# define ISDIGIT(Ch) isdigit (Ch) +# define ISASCII(Ch) isascii (Ch) +# define MBRLEN(Cp, L, St) __mbrlen (Cp, L, St) + +# define PUT(F, S, N) _IO_sputn (F, S, N) +# define PAD(Padchar) \ + if (width > 0) \ + done += _IO_padn (s, Padchar, width) +#else +# define vfprintf vfwprintf +# define CHAR_T wchar_t +# define UCHAR_T uwchar_t +# define INT_T wint_t +# define L_(Str) L##Str +# define ISDIGIT(Ch) iswdigit (Ch) + +# define PUT(F, S, N) _IO_sputn (F, S, N) +# define PAD(Padchar) \ + if (width > 0) \ + done += _IO_wpadn (s, Padchar, width) +#endif + +#define DONT_NEED_READ_INT +#include "printf-parse.h" + + +size_t +parse_printf_format (const char *fmt, size_t n, int *argtypes) +{ + size_t nargs; /* Number of arguments. */ + size_t max_ref_arg; /* Highest index used in a positional arg. */ + struct printf_spec spec; + const unsigned char *f = (const unsigned char *) fmt; + + nargs = 0; + max_ref_arg = 0; + + /* Search for format specifications. */ + for (f = __find_specmb (f); *f != '\0'; f = spec.next_fmt) + { + /* Parse this spec. */ + nargs += __parse_one_specmb (f, nargs, &spec, &max_ref_arg); + + /* If the width is determined by an argument this is an int. */ + if (spec.width_arg != -1 && (size_t) spec.width_arg < n) + argtypes[spec.width_arg] = PA_INT; + + /* If the precision is determined by an argument this is an int. */ + if (spec.prec_arg != -1 && (size_t) spec.prec_arg < n) + argtypes[spec.prec_arg] = PA_INT; + + if ((size_t) spec.data_arg < n) + switch (spec.ndata_args) + { + case 0: /* No arguments. */ + break; + case 1: /* One argument; we already have the type. */ + argtypes[spec.data_arg] = spec.data_arg_type; + break; + default: + /* We have more than one argument for this format spec. We must + call the arginfo function again to determine all the types. */ + (void) (*__printf_arginfo_table[spec.info.spec]) + (&spec.info, n - spec.data_arg, &argtypes[spec.data_arg], + &spec.size); + break; + } + } + + return MAX (nargs, max_ref_arg); +} |