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2b778ceb | 1 | /* Copyright (C) 2000-2021 Free Software Foundation, Inc. |
4295702f | 2 | This file is part of the GNU C Library. |
69c69fe1 | 3 | Contributed by Ulrich Drepper <drepper@gnu.org>, 2000. |
4295702f UD |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
4295702f UD |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
4295702f | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
4295702f | 18 | |
bea9b193 | 19 | #include <stdbool.h> |
7be688b5 UD |
20 | #include <wchar.h> |
21 | #include <wctype.h> | |
cd00e12d | 22 | #include <scratch_buffer.h> |
7be688b5 | 23 | |
69c69fe1 | 24 | #include "../locale/outdigits.h" |
4295702f UD |
25 | #include "../locale/outdigitswc.h" |
26 | ||
69c69fe1 | 27 | static CHAR_T * |
3703468e | 28 | _i18n_number_rewrite (CHAR_T *w, CHAR_T *rear_ptr, CHAR_T *end) |
4295702f | 29 | { |
7be688b5 | 30 | #ifdef COMPILE_WPRINTF |
7be688b5 UD |
31 | # define decimal NULL |
32 | # define thousands NULL | |
33 | #else | |
c1d0e639 JJ |
34 | char decimal[MB_LEN_MAX + 1]; |
35 | char thousands[MB_LEN_MAX + 1]; | |
7be688b5 UD |
36 | #endif |
37 | ||
38 | /* "to_outpunct" is a map from ASCII decimal point and thousands-sep | |
39 | to their equivalent in locale. This is defined for locales which | |
40 | use extra decimal point and thousands-sep. */ | |
41 | wctrans_t map = __wctrans ("to_outpunct"); | |
3bd6014e UD |
42 | wint_t wdecimal = __towctrans (L'.', map); |
43 | wint_t wthousands = __towctrans (L',', map); | |
43e56b0e UD |
44 | |
45 | #ifndef COMPILE_WPRINTF | |
a1ffb40e | 46 | if (__glibc_unlikely (map != NULL)) |
3bd6014e | 47 | { |
7be688b5 UD |
48 | mbstate_t state; |
49 | memset (&state, '\0', sizeof (state)); | |
50 | ||
c1d0e639 JJ |
51 | size_t n = __wcrtomb (decimal, wdecimal, &state); |
52 | if (n == (size_t) -1) | |
7be688b5 | 53 | memcpy (decimal, ".", 2); |
c1d0e639 JJ |
54 | else |
55 | decimal[n] = '\0'; | |
7be688b5 UD |
56 | |
57 | memset (&state, '\0', sizeof (state)); | |
58 | ||
c1d0e639 JJ |
59 | n = __wcrtomb (thousands, wthousands, &state); |
60 | if (n == (size_t) -1) | |
7be688b5 | 61 | memcpy (thousands, ",", 2); |
c1d0e639 JJ |
62 | else |
63 | thousands[n] = '\0'; | |
7be688b5 | 64 | } |
3bd6014e | 65 | #endif |
69c69fe1 UD |
66 | |
67 | /* Copy existing string so that nothing gets overwritten. */ | |
3703468e | 68 | CHAR_T *src; |
cd00e12d FW |
69 | struct scratch_buffer buffer; |
70 | scratch_buffer_init (&buffer); | |
71 | if (!scratch_buffer_set_array_size (&buffer, rear_ptr - w, sizeof (CHAR_T))) | |
72 | /* If we cannot allocate the memory don't rewrite the string. | |
73 | It is better than nothing. */ | |
74 | return w; | |
75 | src = buffer.data; | |
3703468e | 76 | |
7be688b5 UD |
77 | CHAR_T *s = (CHAR_T *) __mempcpy (src, w, |
78 | (rear_ptr - w) * sizeof (CHAR_T)); | |
3703468e UD |
79 | |
80 | w = end; | |
69c69fe1 UD |
81 | |
82 | /* Process all characters in the string. */ | |
83 | while (--s >= src) | |
84 | { | |
85 | if (*s >= '0' && *s <= '9') | |
86 | { | |
87 | if (sizeof (CHAR_T) == 1) | |
88 | w = (CHAR_T *) outdigit_value ((char *) w, *s - '0'); | |
89 | else | |
90 | *--w = (CHAR_T) outdigitwc_value (*s - '0'); | |
91 | } | |
7be688b5 | 92 | else if (__builtin_expect (map == NULL, 1) || (*s != '.' && *s != ',')) |
69c69fe1 | 93 | *--w = *s; |
7be688b5 UD |
94 | else |
95 | { | |
96 | if (sizeof (CHAR_T) == 1) | |
97 | { | |
98 | const char *outpunct = *s == '.' ? decimal : thousands; | |
99 | size_t dlen = strlen (outpunct); | |
100 | ||
101 | w -= dlen; | |
102 | while (dlen-- > 0) | |
103 | w[dlen] = outpunct[dlen]; | |
104 | } | |
105 | else | |
106 | *--w = *s == '.' ? (CHAR_T) wdecimal : (CHAR_T) wthousands; | |
107 | } | |
69c69fe1 UD |
108 | } |
109 | ||
cd00e12d | 110 | scratch_buffer_free (&buffer); |
69c69fe1 | 111 | return w; |
4295702f | 112 | } |