/* Compare at most N characters of two strings without taking care for the case. Copyright (C) 1992, 1996-1997, 2002 Free Software Foundation, Inc. NOTE: The canonical source of this file is maintained with the GNU C Library. Bugs can be reported to bug-glibc@gnu.org. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H # include <config.h> #endif #include <string.h> #include <ctype.h> #ifndef weak_alias # define __strncasecmp strncasecmp # define TOLOWER(Ch) tolower (Ch) #else # ifdef USE_IN_EXTENDED_LOCALE_MODEL # define __strncasecmp __strncasecmp_l # define TOLOWER(Ch) __tolower_l ((Ch), loc) # else # define TOLOWER(Ch) tolower (Ch) # endif #endif #ifdef USE_IN_EXTENDED_LOCALE_MODEL # define LOCALE_PARAM , __locale_t loc #else # define LOCALE_PARAM #endif /* Compare no more than N characters of S1 and S2, ignoring case, returning less than, equal to or greater than zero if S1 is lexicographically less than, equal to or greater than S2. */ int __strncasecmp (const char *s1, const char *s2, size_t n LOCALE_PARAM) { const unsigned char *p1 = (const unsigned char *) s1; const unsigned char *p2 = (const unsigned char *) s2; unsigned char c1, c2; if (p1 == p2 || n == 0) return 0; do { c1 = TOLOWER (*p1++); c2 = TOLOWER (*p2++); if (c1 == '\0' || c1 != c2) break; } while (--n > 0); return c1 - c2; } #ifndef __strncasecmp weak_alias (__strncasecmp, strncasecmp) #endif