| 1 | /* strcasecmp.c - functions for case-insensitive string comparison. */
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| 2 |
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| 3 | /* Copyright (C) 1995 Free Software Foundation, Inc.
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| 4 |
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| 5 | This file is part of GNU Bash, the Bourne Again SHell.
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| 6 |
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| 7 | Bash is free software; you can redistribute it and/or modify it under
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| 8 | the terms of the GNU General Public License as published by the Free
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| 9 | Software Foundation; either version 2, or (at your option) any later
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| 10 | version.
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| 11 |
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| 12 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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| 13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or
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| 14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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| 15 | for more details.
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| 16 |
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| 17 | You should have received a copy of the GNU General Public License along
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| 18 | with Bash; see the file COPYING. If not, write to the Free Software
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| 19 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA */
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| 20 |
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| 21 | #include <config.h>
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| 22 |
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| 23 | #if !defined (HAVE_STRCASECMP)
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| 24 |
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| 25 | #include <stdc.h>
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| 26 | #include <bashansi.h>
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| 27 | #include <chartypes.h>
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| 28 |
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| 29 | /* Compare at most COUNT characters from string1 to string2. Case
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| 30 | doesn't matter. */
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| 31 | int
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| 32 | strncasecmp (string1, string2, count)
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| 33 | const char *string1;
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| 34 | const char *string2;
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| 35 | int count;
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| 36 | {
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| 37 | register const char *s1;
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| 38 | register const char *s2;
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| 39 | register int r;
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| 40 |
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| 41 | if (count <= 0 || (string1 == string2))
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| 42 | return 0;
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| 43 |
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| 44 | s1 = string1;
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| 45 | s2 = string2;
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| 46 | do
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| 47 | {
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| 48 | if ((r = TOLOWER ((unsigned char) *s1) - TOLOWER ((unsigned char) *s2)) != 0)
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| 49 | return r;
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| 50 | if (*s1++ == '\0')
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| 51 | break;
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| 52 | s2++;
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| 53 | }
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| 54 | while (--count != 0);
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| 55 |
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| 56 | return (0);
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| 57 | }
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| 58 |
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| 59 | /* strcmp (), but caseless. */
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| 60 | int
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| 61 | strcasecmp (string1, string2)
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| 62 | const char *string1;
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| 63 | const char *string2;
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| 64 | {
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| 65 | register const char *s1;
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| 66 | register const char *s2;
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| 67 | register int r;
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| 68 |
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| 69 | s1 = string1;
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| 70 | s2 = string2;
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| 71 |
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| 72 | if (s1 == s2)
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| 73 | return (0);
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| 74 |
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| 75 | while ((r = TOLOWER ((unsigned char)*s1) - TOLOWER ((unsigned char)*s2)) == 0)
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| 76 | {
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| 77 | if (*s1++ == '\0')
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| 78 | return 0;
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| 79 | s2++;
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| 80 | }
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| 81 |
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| 82 | return (r);
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| 83 | }
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| 84 | #endif /* !HAVE_STRCASECMP */
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