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Diffstat (limited to 'lib/sh/strcasecmp.c')
-rw-r--r-- | lib/sh/strcasecmp.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/lib/sh/strcasecmp.c b/lib/sh/strcasecmp.c new file mode 100644 index 0000000..33d925b --- /dev/null +++ b/lib/sh/strcasecmp.c @@ -0,0 +1,84 @@ +/* strcasecmp.c - functions for case-insensitive string comparison. */ + +/* Copyright (C) 1995 Free Software Foundation, Inc. + + This file is part of GNU Bash, the Bourne Again SHell. + + Bash 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. + + Bash 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 Bash; see the file COPYING. If not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA */ + +#include <config.h> + +#if !defined (HAVE_STRCASECMP) + +#include <stdc.h> +#include <bashansi.h> +#include <chartypes.h> + +/* Compare at most COUNT characters from string1 to string2. Case + doesn't matter. */ +int +strncasecmp (string1, string2, count) + const char *string1; + const char *string2; + int count; +{ + register const char *s1; + register const char *s2; + register int r; + + if (count <= 0 || (string1 == string2)) + return 0; + + s1 = string1; + s2 = string2; + do + { + if ((r = TOLOWER ((unsigned char) *s1) - TOLOWER ((unsigned char) *s2)) != 0) + return r; + if (*s1++ == '\0') + break; + s2++; + } + while (--count != 0); + + return (0); +} + +/* strcmp (), but caseless. */ +int +strcasecmp (string1, string2) + const char *string1; + const char *string2; +{ + register const char *s1; + register const char *s2; + register int r; + + s1 = string1; + s2 = string2; + + if (s1 == s2) + return (0); + + while ((r = TOLOWER ((unsigned char)*s1) - TOLOWER ((unsigned char)*s2)) == 0) + { + if (*s1++ == '\0') + return 0; + s2++; + } + + return (r); +} +#endif /* !HAVE_STRCASECMP */ |