1 /* Copyright (C) 2000-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
21 /* Look up the value of the next multibyte character and return its numerical
22 value if it is one of the digits known in the locale. If *DECIDED is
23 -1 this means it is not yet decided which form it is and we have to
24 search through all available digits. Otherwise we know which script
25 the digits are from. */
27 indigitwc_value (wchar_t wc
, int *decided
)
31 const wchar_t *wcdigits
[10];
35 from_level
= to_level
= *decided
;
39 to_level
= _NL_CURRENT_WORD (LC_CTYPE
, _NL_CTYPE_INDIGITS_WC_LEN
) - 1;
40 assert (from_level
<= to_level
);
43 /* In this round we get the pointer to the digit strings and also perform
44 the first round of comparisons. */
45 for (n
= 0; n
< 10; ++n
)
47 /* Get the string for the digits with value N. */
48 wcdigits
[n
] = _NL_CURRENT (LC_CTYPE
, _NL_CTYPE_INDIGITS0_WC
+ n
);
49 wcdigits
[n
] += from_level
;
51 if (wc
== *wcdigits
[n
])
59 /* Advance the pointer to the next string. */
63 /* Now perform the remaining tests. */
64 while (++from_level
<= to_level
)
66 /* Search all ten digits of this level. */
67 for (n
= 0; n
< 10; ++n
)
69 if (wc
== *wcdigits
[n
])
73 *decided
= from_level
;
77 /* Advance the pointer to the next string. */
82 /* If we reach this point no matching digit was found. */