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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [posix/] [collcmp.c] - Rev 207
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/* * Copyright (C) 1996 by Andrey A. Chernov, Moscow, Russia. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> #define ASCII_COMPATIBLE_COLLATE /* see share/colldef */ #include <string.h> #include "collate.h" #ifndef ASCII_COMPATIBLE_COLLATE #include <ctype.h> #endif /* * Compare two characters converting collate information * into ASCII-compatible range, it allows to handle * "[a-z]"-type ranges with national characters. */ int __collate_range_cmp (c1, c2) int c1, c2; { static char s1[2], s2[2]; int ret; #ifndef ASCII_COMPATIBLE_COLLATE int as1, as2, al1, al2; #endif c1 &= UCHAR_MAX; c2 &= UCHAR_MAX; if (c1 == c2) return (0); #ifndef ASCII_COMPATIBLE_COLLATE as1 = isascii(c1); as2 = isascii(c2); al1 = isalpha(c1); al2 = isalpha(c2); if (as1 || as2 || al1 || al2) { if ((as1 && as2) || (!al1 && !al2)) return (c1 - c2); if (al1 && !al2) { if (isupper(c1)) return ('A' - c2); else return ('a' - c2); } else if (al2 && !al1) { if (isupper(c2)) return (c1 - 'A'); else return (c1 - 'a'); } } #endif s1[0] = c1; s2[0] = c2; if ((ret = strcoll(s1, s2)) != 0) return (ret); return (c1 - c2); }