| 1 | /*
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| 2 | * Copyright (c) 1987 Regents of the University of California.
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms are permitted
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| 6 | * provided that this notice is preserved and that due credit is given
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| 7 | * to the University of California at Berkeley. The name of the University
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| 8 | * may not be used to endorse or promote products derived from this
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| 9 | * software without specific written prior permission. This software
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| 10 | * is provided ``as is'' without express or implied warranty.
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| 11 | */
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| 12 |
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| 13 | /*
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| 14 |
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| 15 | @deftypefn Supplemental int strcasecmp (const char *@var{s1}, const char *@var{s2})
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| 16 |
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| 17 | A case-insensitive @code{strcmp}.
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| 18 |
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| 19 | @end deftypefn
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| 20 |
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| 21 | */
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| 22 |
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| 23 | #if defined(LIBC_SCCS) && !defined(lint)
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| 24 | static char sccsid[] = "@(#)strcasecmp.c 5.5 (Berkeley) 11/24/87";
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| 25 | #endif /* LIBC_SCCS and not lint */
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| 26 |
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| 27 | #include <ansidecl.h>
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| 28 | #ifdef __STDC__
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| 29 | #include <stddef.h>
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| 30 | #else
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| 31 | #define size_t unsigned long
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| 32 | #endif
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| 33 |
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| 34 | /*
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| 35 | * This array is designed for mapping upper and lower case letter
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| 36 | * together for a case independent comparison. The mappings are
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| 37 | * based upon ascii character sequences.
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| 38 | */
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| 39 | typedef unsigned char uc;
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| 40 | static const unsigned char charmap[] = {
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| 41 | (uc)'\000',(uc)'\001',(uc)'\002',(uc)'\003',(uc)'\004',(uc)'\005',(uc)'\006',(uc)'\007',
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| 42 | (uc)'\010',(uc)'\011',(uc)'\012',(uc)'\013',(uc)'\014',(uc)'\015',(uc)'\016',(uc)'\017',
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| 43 | (uc)'\020',(uc)'\021',(uc)'\022',(uc)'\023',(uc)'\024',(uc)'\025',(uc)'\026',(uc)'\027',
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| 44 | (uc)'\030',(uc)'\031',(uc)'\032',(uc)'\033',(uc)'\034',(uc)'\035',(uc)'\036',(uc)'\037',
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| 45 | (uc)'\040',(uc)'\041',(uc)'\042',(uc)'\043',(uc)'\044',(uc)'\045',(uc)'\046',(uc)'\047',
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| 46 | (uc)'\050',(uc)'\051',(uc)'\052',(uc)'\053',(uc)'\054',(uc)'\055',(uc)'\056',(uc)'\057',
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| 47 | (uc)'\060',(uc)'\061',(uc)'\062',(uc)'\063',(uc)'\064',(uc)'\065',(uc)'\066',(uc)'\067',
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| 48 | (uc)'\070',(uc)'\071',(uc)'\072',(uc)'\073',(uc)'\074',(uc)'\075',(uc)'\076',(uc)'\077',
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| 49 | (uc)'\100',(uc)'\141',(uc)'\142',(uc)'\143',(uc)'\144',(uc)'\145',(uc)'\146',(uc)'\147',
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| 50 | (uc)'\150',(uc)'\151',(uc)'\152',(uc)'\153',(uc)'\154',(uc)'\155',(uc)'\156',(uc)'\157',
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| 51 | (uc)'\160',(uc)'\161',(uc)'\162',(uc)'\163',(uc)'\164',(uc)'\165',(uc)'\166',(uc)'\167',
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| 52 | (uc)'\170',(uc)'\171',(uc)'\172',(uc)'\133',(uc)'\134',(uc)'\135',(uc)'\136',(uc)'\137',
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| 53 | (uc)'\140',(uc)'\141',(uc)'\142',(uc)'\143',(uc)'\144',(uc)'\145',(uc)'\146',(uc)'\147',
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| 54 | (uc)'\150',(uc)'\151',(uc)'\152',(uc)'\153',(uc)'\154',(uc)'\155',(uc)'\156',(uc)'\157',
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| 55 | (uc)'\160',(uc)'\161',(uc)'\162',(uc)'\163',(uc)'\164',(uc)'\165',(uc)'\166',(uc)'\167',
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| 56 | (uc)'\170',(uc)'\171',(uc)'\172',(uc)'\173',(uc)'\174',(uc)'\175',(uc)'\176',(uc)'\177',
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| 57 | (uc)'\200',(uc)'\201',(uc)'\202',(uc)'\203',(uc)'\204',(uc)'\205',(uc)'\206',(uc)'\207',
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| 58 | (uc)'\210',(uc)'\211',(uc)'\212',(uc)'\213',(uc)'\214',(uc)'\215',(uc)'\216',(uc)'\217',
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| 59 | (uc)'\220',(uc)'\221',(uc)'\222',(uc)'\223',(uc)'\224',(uc)'\225',(uc)'\226',(uc)'\227',
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| 60 | (uc)'\230',(uc)'\231',(uc)'\232',(uc)'\233',(uc)'\234',(uc)'\235',(uc)'\236',(uc)'\237',
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| 61 | (uc)'\240',(uc)'\241',(uc)'\242',(uc)'\243',(uc)'\244',(uc)'\245',(uc)'\246',(uc)'\247',
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| 62 | (uc)'\250',(uc)'\251',(uc)'\252',(uc)'\253',(uc)'\254',(uc)'\255',(uc)'\256',(uc)'\257',
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