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Diffstat (limited to 'REORG.TODO/stdio-common/printf-parse.h')
| -rw-r--r-- | REORG.TODO/stdio-common/printf-parse.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/REORG.TODO/stdio-common/printf-parse.h b/REORG.TODO/stdio-common/printf-parse.h new file mode 100644 index 0000000000..484ba6010d --- /dev/null +++ b/REORG.TODO/stdio-common/printf-parse.h @@ -0,0 +1,144 @@ +/* Internal header for parsing printf format strings. + Copyright (C) 1995-2017 Free Software Foundation, Inc. + This file is part of th 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 <printf.h> +#include <stdint.h> +#include <stddef.h> +#include <string.h> +#include <wchar.h> + + +struct printf_spec + { + /* Information parsed from the format spec. */ + struct printf_info info; + + /* Pointers into the format string for the end of this format + spec and the next (or to the end of the string if no more). */ + const UCHAR_T *end_of_fmt, *next_fmt; + + /* Position of arguments for precision and width, or -1 if `info' has + the constant value. */ + int prec_arg, width_arg; + + int data_arg; /* Position of data argument. */ + int data_arg_type; /* Type of first argument. */ + /* Number of arguments consumed by this format specifier. */ + size_t ndata_args; + /* Size of the parameter for PA_USER type. */ + int size; + }; + + +/* The various kinds off arguments that can be passed to printf. */ +union printf_arg + { + wchar_t pa_wchar; + int pa_int; + long int pa_long_int; + long long int pa_long_long_int; + unsigned int pa_u_int; + unsigned long int pa_u_long_int; + unsigned long long int pa_u_long_long_int; + double pa_double; + long double pa_long_double; + const char *pa_string; + const wchar_t *pa_wstring; + void *pa_pointer; + void *pa_user; + }; + + +#ifndef DONT_NEED_READ_INT +/* Read a simple integer from a string and update the string pointer. + It is assumed that the first character is a digit. */ +static int +read_int (const UCHAR_T * *pstr) +{ + int retval = **pstr - L_('0'); + + while (ISDIGIT (*++(*pstr))) + if (retval >= 0) + { + if (INT_MAX / 10 < retval) + retval = -1; + else + { + int digit = **pstr - L_('0'); + + retval *= 10; + if (INT_MAX - digit < retval) + retval = -1; + else + retval += digit; + } + } + + return retval; +} +#endif + + +/* These are defined in reg-printf.c. */ +extern printf_arginfo_size_function **__printf_arginfo_table attribute_hidden; +extern printf_function **__printf_function_table attribute_hidden; +extern printf_va_arg_function **__printf_va_arg_table attribute_hidden; + + +/* Find the next spec in FORMAT, or the end of the string. Returns + a pointer into FORMAT, to a '%' or a '\0'. */ +__extern_always_inline const unsigned char * +__find_specmb (const unsigned char *format) +{ + return (const unsigned char *) __strchrnul ((const char *) format, '%'); +} + +__extern_always_inline const unsigned int * +__find_specwc (const unsigned int *format) +{ + return (const unsigned int *) __wcschrnul ((const wchar_t *) format, L'%'); +} + + +/* FORMAT must point to a '%' at the beginning of a spec. Fills in *SPEC + with the parsed details. POSN is the number of arguments already + consumed. At most MAXTYPES - POSN types are filled in TYPES. Return + the number of args consumed by this spec; *MAX_REF_ARG is updated so it + remains the highest argument index used. */ +extern size_t __parse_one_specmb (const unsigned char *format, size_t posn, + struct printf_spec *spec, + size_t *max_ref_arg) attribute_hidden; + +extern size_t __parse_one_specwc (const unsigned int *format, size_t posn, + struct printf_spec *spec, + size_t *max_ref_arg) attribute_hidden; + + + +/* This variable is defined in reg-modifier.c. */ +struct printf_modifier_record; +extern struct printf_modifier_record **__printf_modifier_table + attribute_hidden; + +/* Handle registered modifiers. */ +extern int __handle_registered_modifier_mb (const unsigned char **format, + struct printf_info *info) + attribute_hidden; +extern int __handle_registered_modifier_wc (const unsigned int **format, + struct printf_info *info) + attribute_hidden; |