| /* Copyright (C) 2000 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. */ |

| |

| #include <assert.h> |

| #include <langinfo.h> |

| |

| /* 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 int |

| indigitwc_value (wchar_t wc, int *decided) |

| { |

| int from_level; |

| int to_level; |

| const wchar_t *wcdigits[10]; |

| int n; |

| |

| if (*decided != -1) |

| from_level = to_level = *decided; |

| else |

| { |

| from_level = 0; |

| to_level = _NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_INDIGITS_WC_LEN) - 1; |

| assert (from_level <= to_level); |

| } |

| |

| /* In this round we get the pointer to the digit strings and also perform |

| the first round of comparisons. */ |

| for (n = 0; n < 10; ++n) |

| { |

| /* Get the string for the digits with value N. */ |

| wcdigits[n] = _NL_CURRENT (LC_CTYPE, _NL_CTYPE_INDIGITS0_WC + n); |

| wcdigits[n] += from_level; |

| |

| if (wc == *wcdigits[n]) |

| { |

| /* Found it. */ |

| if (*decided == -1) |

| *decided = 0; |

| return n; |

| } |

| |

| /* Advance the pointer to the next string. */ |

| ++wcdigits[n]; |

| } |

| |

| /* Now perform the remaining tests. */ |

| while (++from_level <= to_level) |

| { |

| /* Search all ten digits of this level. */ |

| for (n = 0; n < 10; ++n) |

| { |

| if (wc == *wcdigits[n]) |

| { |

| /* Found it. */ |

| if (*decided == -1) |

| *decided = from_level; |

| return n; |

| } |

| |

| /* Advance the pointer to the next string. */ |

| ++wcdigits[n]; |

| } |

| } |

| |

| /* If we reach this point no matching digit was found. */ |

| return -1; |

| } |