| 1 | /* Formatted output to strings.
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| 2 | Copyright (C) 1999-2000, 2002-2003 Free Software Foundation, Inc.
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| 3 |
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| 4 | This program is free software; you can redistribute it and/or modify it
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| 5 | under the terms of the GNU Library General Public License as published
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| 6 | by the Free Software Foundation; either version 2, or (at your option)
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| 7 | any later version.
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| 8 |
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| 9 | This program is distributed in the hope that it will be useful,
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 12 | Library General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU Library General Public
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| 15 | License along with this program; if not, write to the Free Software
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| 16 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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| 17 | USA. */
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| 18 |
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| 19 | #ifdef HAVE_CONFIG_H
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| 20 | # include <config.h>
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| 21 | #endif
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| 22 |
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| 23 | /* Specification. */
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| 24 | #if WIDE_CHAR_VERSION
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| 25 | # include "wprintf-parse.h"
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| 26 | #else
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| 27 | # include "printf-parse.h"
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| 28 | #endif
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| 29 |
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| 30 | /* Get size_t, NULL. */
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| 31 | #include <stddef.h>
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| 32 |
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| 33 | /* Get intmax_t. */
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| 34 | #if HAVE_STDINT_H_WITH_UINTMAX
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| 35 | # include <stdint.h>
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| 36 | #endif
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| 37 | #if HAVE_INTTYPES_H_WITH_UINTMAX
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| 38 | # include <inttypes.h>
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| 39 | #endif
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| 40 |
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| 41 | /* malloc(), realloc(), free(). */
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| 42 | #include <stdlib.h>
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| 43 |
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| 44 | /* Checked size_t computations. */
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| 45 | #include "xsize.h"
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| 46 |
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| 47 | #if WIDE_CHAR_VERSION
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| 48 | # define PRINTF_PARSE wprintf_parse
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| 49 | # define CHAR_T wchar_t
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| 50 | # define DIRECTIVE wchar_t_directive
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| 51 | # define DIRECTIVES wchar_t_directives
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| 52 | #else
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| 53 | # define PRINTF_PARSE printf_parse
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| 54 | # define CHAR_T char
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| 55 | # define DIRECTIVE char_directive
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| 56 | # define DIRECTIVES char_directives
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| 57 | #endif
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| 58 |
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| 59 | #ifdef STATIC
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| 60 | STATIC
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| 61 | #endif
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| 62 | int
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| 63 | PRINTF_PARSE (const CHAR_T *format, DIRECTIVES *d, arguments *a)
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| 64 | {
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| 65 | const CHAR_T *cp = format; /* pointer into format */
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| 66 | size_t arg_posn = 0; /* number of regular arguments consumed */
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| 67 | size_t d_allocated; /* allocated elements of d->dir */
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| 68 | size_t a_allocated; /* allocated elements of a->arg */
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| 69 | size_t max_width_length = 0;
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| 70 | size_t max_precision_length = 0;
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| 71 |
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| 72 | d->count = 0;
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| 73 | d_allocated = 1;
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| 74 | d->dir = malloc (d_allocated * sizeof (DIRECTIVE));
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| 75 | if (d->dir == NULL)
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| 76 | /* Out of memory. */
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| 77 | return -1;
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| 78 |
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| 79 | a->count = 0;
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| 80 | a_allocated = 0;
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| 81 | a->arg = NULL;
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| 82 |
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| 83 | #define REGISTER_ARG(_index_,_type_) \
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| 84 | { \
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| 85 | size_t n = (_index_); \
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| 86 | if (n >= a_allocated) \
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| 87 | { \
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| 88 | size_t memory_size; \
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| 89 | argument *memory; \
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| 90 | \
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| 91 | a_allocated = xtimes (a_allocated, 2); \
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| 92 | if (a_allocated <= n) \
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| 93 | a_allocated = xsum (n, 1); \
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| 94 | memory_size = xtimes (a_allocated, sizeof (argument)); \
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| 95 | if (size_overflow_p (memory_size)) \
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| 96 | /* Overflow, would lead to out of memory. */ \
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| 97 | goto error; \
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| 98 | memory = (a->arg \
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| 99 | ? realloc (a->arg, memory_size) \
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| 100 | : malloc (memory_size)); \
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| 101 | if (memory == NULL) \
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| 102 | /* Out of memory. */ \
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| 103 | goto error; \
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| 104 | a->arg = memory; \
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| 105 | } \
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| 106 | while (a->count <= n) \
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| 107 | a->arg[a->count++].type = TYPE_NONE; \
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| 108 | if (a->arg[n].type == TYPE_NONE) \
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| 109 | a->arg[n].type = (_type_); \
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| 110 | else if (a->arg[n].type != (_type_)) \
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| 111 | /* Ambiguous type for positional argument. */ \
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| 112 | goto error; \
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| 113 | }
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| 114 |
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| 115 | while (*cp != '\0')
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| 116 | {
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| 117 | CHAR_T c = *cp++;
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| 118 | if (c == '%')
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| 119 | {
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| 120 | size_t arg_index = ARG_NONE;
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| 121 | DIRECTIVE *dp = &d->dir[d->count];/* pointer to next directive */
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| 122 |
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| 123 | /* Initialize the next directive. */
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| 124 | dp->dir_start = cp - 1;
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| 125 | dp->flags = 0;
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| 126 | dp->width_start = NULL;
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| 127 | dp->width_end = NULL;
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| 128 | dp->width_arg_index = ARG_NONE;
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| 129 | dp->precision_start = NULL;
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| 130 | dp->precision_end = NULL;
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| 131 | dp->precision_arg_index = ARG_NONE;
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| 132 | dp->arg_index = ARG_NONE;
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| 133 |
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| 134 | /* Test for positional argument. */
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| 135 | if (*cp >= '0' && *cp <= '9')
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| 136 | {
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| 137 | const CHAR_T *np;
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| 138 |
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| 139 | for (np = cp; *np >= '0' && *np <= '9'; np++)
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| 140 | ;
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| 141 | if (*np == '$')
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| 142 | {
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| 143 | size_t n = 0;
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| 144 |
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| 145 | for (np = cp; *np >= '0' && *np <= '9'; np++)
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| 146 | n = xsum (xtimes (n, 10), *np - '0');
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| 147 | if (n == 0)
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| 148 | /* Positional argument 0. */
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| 149 | goto error;
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| 150 | if (size_overflow_p (n))
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| 151 | /* n too large, would lead to out of memory later. */
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| 152 | goto error;
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| 153 | arg_index = n - 1;
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| 154 | cp = np + 1;
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| 155 | }
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| 156 | }
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| 157 |
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| 158 | /* Read the flags. */
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| 159 | for (;;)
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| 160 | {
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| 161 | if (*cp == '\'')
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| 162 | {
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| 163 | dp->flags |= FLAG_GROUP;
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| 164 | cp++;
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| 165 | }
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| 166 | else if (*cp == '-')
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| 167 | {
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| 168 | dp->flags |= FLAG_LEFT;
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| 169 | cp++;
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| 170 | }
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| 171 | else if (*cp == '+')
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| 172 | {
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| 173 | dp->flags |= FLAG_SHOWSIGN;
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| 174 | cp++;
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| 175 | }
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| 176 | else if (*cp == ' ')
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| 177 | {
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| 178 | dp->flags |= FLAG_SPACE;
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| 179 | cp++;
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| 180 | }
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| 181 | else if (*cp == '#')
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| 182 | {
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| 183 | dp->flags |= FLAG_ALT;
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| 184 | cp++;
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| 185 | }
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| 186 | else if (*cp == '0')
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| 187 | {
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| 188 | dp->flags |= FLAG_ZERO;
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| 189 | cp++;
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| 190 | }
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| 191 | else
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| 192 | break;
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| 193 | }
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| 194 |
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| 195 | /* Parse the field width. */
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| 196 | if (*cp == '*')
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| 197 | {
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| 198 | dp->width_start = cp;
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| 199 | cp++;
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| 200 | dp->width_end = cp;
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| 201 | if (max_width_length < 1)
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| 202 | max_width_length = 1;
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| 203 |
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| 204 | /* Test for positional argument. */
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| 205 | if (*cp >= '0' && *cp <= '9')
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| 206 | {
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| 207 | const CHAR_T *np;
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| 208 |
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| 209 | for (np = cp; *np >= '0' && *np <= '9'; np++)
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| 210 | ;
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| 211 | if (*np == '$')
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| 212 | {
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| 213 | size_t n = 0;
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| 214 |
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| 215 | for (np = cp; *np >= '0' && *np <= '9'; np++)
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| 216 | n = xsum (xtimes (n, 10), *np - '0');
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| 217 | if (n == 0)
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| 218 | /* Positional argument 0. */
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| 219 | goto error;
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| 220 | if (size_overflow_p (n))
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| 221 | /* n too large, would lead to out of memory later. */
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| 222 | goto error;
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| 223 | dp->width_arg_index = n - 1;
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| 224 | cp = np + 1;
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| 225 | }
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| 226 | }
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| 227 | if (dp->width_arg_index == ARG_NONE)
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| 228 | {
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| 229 | dp->width_arg_index = arg_posn++;
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| 230 | if (dp->width_arg_index == ARG_NONE)
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| 231 | /* arg_posn wrapped around. */
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| 232 | goto error;
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| 233 | }
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| 234 | REGISTER_ARG (dp->width_arg_index, TYPE_INT);
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| 235 | }
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| 236 | else if (*cp >= '0' && *cp <= '9')
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| 237 | {
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| 238 | size_t width_length;
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| 239 |
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| 240 | dp->width_start = cp;
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| 241 | for (; *cp >= '0' && *cp <= '9'; cp++)
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| 242 | ;
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| 243 | dp->width_end = cp;
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| 244 | width_length = dp->width_end - dp->width_start;
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| 245 | if (max_width_length < width_length)
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| 246 | max_width_length = width_length;
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| 247 | }
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| 248 |
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| 249 | /* Parse the precision. */
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| 250 | if (*cp == '.')
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| 251 | {
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| 252 | cp++;
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| 253 | if (*cp == '*')
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| 254 | {
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| 255 | dp->precision_start = cp - 1;
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| 256 | cp++;
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| 257 | dp->precision_end = cp;
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| 258 | if (max_precision_length < 2)
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| 259 | max_precision_length = 2;
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| 260 |
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| 261 | /* Test for positional argument. */
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| 262 | if (*cp >= '0' && *cp <= '9')
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| 263 | {
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| 264 | const CHAR_T *np;
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| 265 |
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| 266 | for (np = cp; *np >= '0' && *np <= '9'; np++)
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| 267 | ;
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| 268 | if (*np == '$')
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| 269 | {
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| 270 | size_t n = 0;
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| 271 |
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| 272 | for (np = cp; *np >= '0' && *np <= '9'; np++)
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| 273 | n = xsum (xtimes (n, 10), *np - '0');
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| 274 | if (n == 0)
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| 275 | /* Positional argument 0. */
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| 276 | goto error;
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| 277 | if (size_overflow_p (n))
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| 278 | /* n too large, would lead to out of memory
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| 279 | later. */
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| 280 | goto error;
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| 281 | dp->precision_arg_index = n - 1;
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| 282 | cp = np + 1;
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| 283 | }
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| 284 | }
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| 285 | if (dp->precision_arg_index == ARG_NONE)
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| 286 | {
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| 287 | dp->precision_arg_index = arg_posn++;
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| 288 | if (dp->precision_arg_index == ARG_NONE)
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| 289 | /* arg_posn wrapped around. */
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| 290 | goto error;
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| 291 | }
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| 292 | REGISTER_ARG (dp->precision_arg_index, TYPE_INT);
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| 293 | }
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| 294 | else
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| 295 | {
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| 296 | size_t precision_length;
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| 297 |
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| 298 | dp->precision_start = cp - 1;
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| 299 | for (; *cp >= '0' && *cp <= '9'; cp++)
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| 300 | ;
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| 301 | dp->precision_end = cp;
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| 302 | precision_length = dp->precision_end - dp->precision_start;
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| 303 | if (max_precision_length < precision_length)
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| 304 | max_precision_length = precision_length;
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| 305 | }
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| 306 | }
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| 307 |
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| 308 | {
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| 309 | arg_type type;
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| 310 |
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| 311 | /* Parse argument type/size specifiers. */
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| 312 | {
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| 313 | int flags = 0;
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| 314 |
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| 315 | for (;;)
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| 316 | {
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| 317 | if (*cp == 'h')
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| 318 | {
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| 319 | flags |= (1 << (flags & 1));
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| 320 | cp++;
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| 321 | }
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| 322 | else if (*cp == 'L')
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| 323 | {
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| 324 | flags |= 4;
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| 325 | cp++;
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| 326 | }
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| 327 | else if (*cp == 'l')
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| 328 | {
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| 329 | flags += 8;
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| 330 | cp++;
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| 331 | }
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| 332 | #ifdef HAVE_INTMAX_T
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| 333 | else if (*cp == 'j')
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| 334 | {
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| 335 | if (sizeof (intmax_t) > sizeof (long))
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| 336 | {
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| 337 | /* intmax_t = long long */
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| 338 | flags += 16;
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| 339 | }
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| 340 | else if (sizeof (intmax_t) > sizeof (int))
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| 341 | {
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| 342 | /* intmax_t = long */
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| 343 | flags += 8;
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| 344 | }
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| 345 | cp++;
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| 346 | }
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| 347 | #endif
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| 348 | else if (*cp == 'z' || *cp == 'Z')
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| 349 | {
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| 350 | /* 'z' is standardized in ISO C 99, but glibc uses 'Z'
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| 351 | because the warning facility in gcc-2.95.2 understands
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| 352 | only 'Z' (see gcc-2.95.2/gcc/c-common.c:1784). */
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| 353 | if (sizeof (size_t) > sizeof (long))
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| 354 | {
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| 355 | /* size_t = long long */
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| 356 | flags += 16;
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| 357 | }
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| 358 | else if (sizeof (size_t) > sizeof (int))
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| 359 | {
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| 360 | /* size_t = long */
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| 361 | flags += 8;
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| 362 | }
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| 363 | cp++;
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| 364 | }
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| 365 | else if (*cp == 't')
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| 366 | {
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| 367 | if (sizeof (ptrdiff_t) > sizeof (long))
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| 368 | {
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| 369 | /* ptrdiff_t = long long */
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| 370 | flags += 16;
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| 371 | }
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| 372 | else if (sizeof (ptrdiff_t) > sizeof (int))
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| 373 | {
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| 374 | /* ptrdiff_t = long */
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| 375 | flags += 8;
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| 376 | }
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| 377 | cp++;
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| 378 | }
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| 379 | else
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| 380 | break;
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| 381 | }
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| 382 |
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| 383 | /* Read the conversion character. */
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| 384 | c = *cp++;
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| 385 | switch (c)
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| 386 | {
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| 387 | case 'd': case 'i':
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| 388 | #ifdef HAVE_LONG_LONG
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| 389 | if (flags >= 16 || (flags & 4))
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| 390 | type = TYPE_LONGLONGINT;
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| 391 | else
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| 392 | #endif
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| 393 | if (flags >= 8)
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| 394 | type = TYPE_LONGINT;
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| 395 | else if (flags & 2)
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| 396 | type = TYPE_SCHAR;
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| 397 | else if (flags & 1)
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| 398 | type = TYPE_SHORT;
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| 399 | else
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| 400 | type = TYPE_INT;
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|---|
| 401 | break;
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| 402 | case 'o': case 'u': case 'x': case 'X':
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| 403 | #ifdef HAVE_LONG_LONG
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| 404 | if (flags >= 16 || (flags & 4))
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| 405 | type = TYPE_ULONGLONGINT;
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| 406 | else
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|---|
| 407 | #endif
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| 408 | if (flags >= 8)
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|---|
| 409 | type = TYPE_ULONGINT;
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| 410 | else if (flags & 2)
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| 411 | type = TYPE_UCHAR;
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|---|
| 412 | else if (flags & 1)
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|---|
| 413 | type = TYPE_USHORT;
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| 414 | else
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|---|
| 415 | type = TYPE_UINT;
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|---|
| 416 | break;
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| 417 | case 'f': case 'F': case 'e': case 'E': case 'g': case 'G':
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| 418 | case 'a': case 'A':
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|---|
| 419 | #ifdef HAVE_LONG_DOUBLE
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|---|
| 420 | if (flags >= 16 || (flags & 4))
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|---|
| 421 | type = TYPE_LONGDOUBLE;
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| 422 | else
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|---|
| 423 | #endif
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|---|
| 424 | type = TYPE_DOUBLE;
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|---|
| 425 | break;
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| 426 | case 'c':
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|---|
| 427 | if (flags >= 8)
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|---|
| 428 | #ifdef HAVE_WINT_T
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|---|
| 429 | type = TYPE_WIDE_CHAR;
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|---|
| 430 | #else
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|---|
| 431 | goto error;
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|---|
| 432 | #endif
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|---|
| 433 | else
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|---|
| 434 | type = TYPE_CHAR;
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|---|
| 435 | break;
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|---|
| 436 | #ifdef HAVE_WINT_T
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|---|
| 437 | case 'C':
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|---|
| 438 | type = TYPE_WIDE_CHAR;
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|---|
| 439 | c = 'c';
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|---|
| 440 | break;
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|---|
| 441 | #endif
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|---|
| 442 | case 's':
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|---|
| 443 | if (flags >= 8)
|
|---|
| 444 | #ifdef HAVE_WCHAR_T
|
|---|
| 445 | type = TYPE_WIDE_STRING;
|
|---|
| 446 | #else
|
|---|
| 447 | goto error;
|
|---|
| 448 | #endif
|
|---|
| 449 | else
|
|---|
| 450 | type = TYPE_STRING;
|
|---|
| 451 | break;
|
|---|
| 452 | #ifdef HAVE_WCHAR_T
|
|---|
| 453 | case 'S':
|
|---|
| 454 | type = TYPE_WIDE_STRING;
|
|---|
| 455 | c = 's';
|
|---|
| 456 | break;
|
|---|
| 457 | #endif
|
|---|
| 458 | case 'p':
|
|---|
| 459 | type = TYPE_POINTER;
|
|---|
| 460 | break;
|
|---|
| 461 | case 'n':
|
|---|
| 462 | #ifdef HAVE_LONG_LONG
|
|---|
| 463 | if (flags >= 16 || (flags & 4))
|
|---|
| 464 | type = TYPE_COUNT_LONGLONGINT_POINTER;
|
|---|
| 465 | else
|
|---|
| 466 | #endif
|
|---|
| 467 | if (flags >= 8)
|
|---|
| 468 | type = TYPE_COUNT_LONGINT_POINTER;
|
|---|
| 469 | else if (flags & 2)
|
|---|
| 470 | type = TYPE_COUNT_SCHAR_POINTER;
|
|---|
| 471 | else if (flags & 1)
|
|---|
| 472 | type = TYPE_COUNT_SHORT_POINTER;
|
|---|
| 473 | else
|
|---|
| 474 | type = TYPE_COUNT_INT_POINTER;
|
|---|
| 475 | break;
|
|---|
| 476 | case '%':
|
|---|
| 477 | type = TYPE_NONE;
|
|---|
| 478 | break;
|
|---|
| 479 | default:
|
|---|
| 480 | /* Unknown conversion character. */
|
|---|
| 481 | goto error;
|
|---|
| 482 | }
|
|---|
| 483 | }
|
|---|
| 484 |
|
|---|
| 485 | if (type != TYPE_NONE)
|
|---|
| 486 | {
|
|---|
| 487 | dp->arg_index = arg_index;
|
|---|
| 488 | if (dp->arg_index == ARG_NONE)
|
|---|
| 489 | {
|
|---|
| 490 | dp->arg_index = arg_posn++;
|
|---|
| 491 | if (dp->arg_index == ARG_NONE)
|
|---|
| 492 | /* arg_posn wrapped around. */
|
|---|
| 493 | goto error;
|
|---|
| 494 | }
|
|---|
| 495 | REGISTER_ARG (dp->arg_index, type);
|
|---|
| 496 | }
|
|---|
| 497 | dp->conversion = c;
|
|---|
| 498 | dp->dir_end = cp;
|
|---|
| 499 | }
|
|---|
| 500 |
|
|---|
| 501 | d->count++;
|
|---|
| 502 | if (d->count >= d_allocated)
|
|---|
| 503 | {
|
|---|
| 504 | size_t memory_size;
|
|---|
| 505 | DIRECTIVE *memory;
|
|---|
| 506 |
|
|---|
| 507 | d_allocated = xtimes (d_allocated, 2);
|
|---|
| 508 | memory_size = xtimes (d_allocated, sizeof (DIRECTIVE));
|
|---|
| 509 | if (size_overflow_p (memory_size))
|
|---|
| 510 | /* Overflow, would lead to out of memory. */
|
|---|
| 511 | goto error;
|
|---|
| 512 | memory = realloc (d->dir, memory_size);
|
|---|
| 513 | if (memory == NULL)
|
|---|
| 514 | /* Out of memory. */
|
|---|
| 515 | goto error;
|
|---|
| 516 | d->dir = memory;
|
|---|
| 517 | }
|
|---|
| 518 | }
|
|---|
| 519 | }
|
|---|
| 520 | d->dir[d->count].dir_start = cp;
|
|---|
| 521 |
|
|---|
| 522 | d->max_width_length = max_width_length;
|
|---|
| 523 | d->max_precision_length = max_precision_length;
|
|---|
| 524 | return 0;
|
|---|
| 525 |
|
|---|
| 526 | error:
|
|---|
| 527 | if (a->arg)
|
|---|
| 528 | free (a->arg);
|
|---|
| 529 | if (d->dir)
|
|---|
| 530 | free (d->dir);
|
|---|
| 531 | return -1;
|
|---|
| 532 | }
|
|---|
| 533 |
|
|---|
| 534 | #undef DIRECTIVES
|
|---|
| 535 | #undef DIRECTIVE
|
|---|
| 536 | #undef CHAR_T
|
|---|
| 537 | #undef PRINTF_PARSE
|
|---|
