1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/* Copyright (C) 2000, 2004, 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.org>, 2000.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
/* Look up the value of the next multibyte character and return its numerical
value if it is one of the digits known in the locale. If *DECIDED is
-1 this means it is not yet decided which form it is and we have to
search through all available digits. Otherwise we know which script
the digits are from. */
static inline char *
outdigit_value (char *s, int n)
{
const char *outdigit;
size_t dlen;
assert (0 <= n && n <= 9);
outdigit = nl_langinfo (_NL_CTYPE_OUTDIGIT0_MB + n);
dlen = strlen (outdigit);
s -= dlen;
while (dlen-- > 0)
s[dlen] = outdigit[dlen];
return s;
}
/* Look up the value of the next multibyte character and return its numerical
value if it is one of the digits known in the locale. If *DECIDED is
-1 this means it is not yet decided which form it is and we have to
search through all available digits. Otherwise we know which script
the digits are from. */
static inline wchar_t
outdigitwc_value (int n)
{
assert (0 <= n && n <= 9);
return nl_langinfo_wc (_NL_CTYPE_OUTDIGIT0_WC + n);
}
static char *
_i18n_number_rewrite (char *w, char *rear_ptr, char *end)
{
char decimal[MB_LEN_MAX + 1];
char thousands[MB_LEN_MAX + 1];
/* "to_outpunct" is a map from ASCII decimal point and thousands-sep
to their equivalent in locale. This is defined for locales which
use extra decimal point and thousands-sep. */
wctrans_t map = wctrans ("to_outpunct");
wint_t wdecimal = towctrans (L_('.'), map);
wint_t wthousands = towctrans (L_(','), map);
if (__builtin_expect (map != NULL, 0))
{
mbstate_t state;
memset (&state, '\0', sizeof (state));
size_t n = wcrtomb (decimal, wdecimal, &state);
if (n == (size_t) -1)
memcpy (decimal, ".", 2);
else
decimal[n] = '\0';
memset (&state, '\0', sizeof (state));
n = wcrtomb (thousands, wthousands, &state);
if (n == (size_t) -1)
memcpy (thousands, ",", 2);
else
thousands[n] = '\0';
}
/* Copy existing string so that nothing gets overwritten. */
char *src;
int use_alloca = (rear_ptr - w) < 4096;
if (__builtin_expect (use_alloca, 1))
src = (char *) alloca (rear_ptr - w);
else
{
src = (char *) malloc (rear_ptr - w);
if (src == NULL)
/* If we cannot allocate the memory don't rewrite the string.
It is better than nothing. */
return w;
}
memcpy (src, w, rear_ptr - w);
char *s = src + (rear_ptr - w);
w = end;
/* Process all characters in the string. */
while (--s >= src)
{
if (*s >= '0' && *s <= '9')
{
if (sizeof (char) == 1)
w = (char *) outdigit_value ((char *) w, *s - '0');
else
*--w = (char) outdigitwc_value (*s - '0');
}
else if (__builtin_expect (map == NULL, 1) || (*s != '.' && *s != ','))
*--w = *s;
else
{
if (sizeof (char) == 1)
{
const char *outpunct = *s == '.' ? decimal : thousands;
size_t dlen = strlen (outpunct);
w -= dlen;
while (dlen-- > 0)
w[dlen] = outpunct[dlen];
}
else
*--w = *s == '.' ? (char) wdecimal : (char) wthousands;
}
}
if (! use_alloca)
free (src);
return w;
}
|
