/* Copyright (C) 1996-2000, 2001 Free Software Foundation, Inc. This file is part of the GNU C Library. Written by Ulrich Drepper, <drepper@cygnus.com>. 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. */ /* Find index of weight. */ static inline int32_t findidx (const wint_t **cpp) { int32_t i; const wint_t *cp; wint_t ch; ch = *(*cpp)++; i = collidx_table_lookup ((const char *) table, ch); if (i >= 0) /* This is an index into the weight table. Cool. */ return i; /* Oh well, more than one sequence starting with this byte. Search for the correct one. */ cp = &extra[-i]; while (1) { size_t nhere; const wint_t *usrc = *cpp; /* The first thing is the index. */ i = *cp++; /* Next is the length of the byte sequence. These are always short byte sequences so there is no reason to call any function (even if they are inlined). */ nhere = *cp++; if (i >= 0) { /* It is a single character. If it matches we found our index. Note that at the end of each list there is an entry of length zero which represents the single byte sequence. The first (and here only) byte was tested already. */ size_t cnt; for (cnt = 0; cnt < nhere; ++cnt) if (cp[cnt] != usrc[cnt]) break; if (cnt == nhere) { /* Found it. */ *cpp += nhere; return i; } /* Up to the next entry. */ cp += nhere; } else { /* This is a range of characters. First decide whether the current byte sequence lies in the range. */ size_t cnt; size_t offset; for (cnt = 0; cnt < nhere - 1; ++cnt) if (cp[cnt] != usrc[cnt]) break; if (cnt < nhere - 1) { cp += 2 * nhere; continue; } if (cp[nhere - 1] > usrc[nhere -1]) { cp += 2 * nhere; continue; } if (cp[2 * nhere - 1] < usrc[nhere -1]) { cp += 2 * nhere; continue; } /* This range matches the next characters. Now find the offset in the indirect table. */ offset = usrc[nhere - 1] - cp[nhere - 1]; *cpp += nhere; return indirect[-i + offset]; } } /* NOTREACHED */ return 0x43219876; }