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Diffstat (limited to 'libiberty/strcasecmp.c')
| -rw-r--r-- | libiberty/strcasecmp.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/libiberty/strcasecmp.c b/libiberty/strcasecmp.c new file mode 100644 index 00000000000..3aa930b696f --- /dev/null +++ b/libiberty/strcasecmp.c @@ -0,0 +1,82 @@ +/* + * Copyright (c) 1987 Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms are permitted + * provided that this notice is preserved and that due credit is given + * to the University of California at Berkeley. The name of the University + * may not be used to endorse or promote products derived from this + * software without specific written prior permission. This software + * is provided ``as is'' without express or implied warranty. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)strcasecmp.c 5.5 (Berkeley) 11/24/87"; +#endif /* LIBC_SCCS and not lint */ + +#include <ansidecl.h> +#ifdef __STDC__ +#include <stddef.h> +#else +#define size_t unsigned long +#endif + +/* + * This array is designed for mapping upper and lower case letter + * together for a case independent comparison. The mappings are + * based upon ascii character sequences. + */ +typedef unsigned char uc; +static unsigned char charmap[] = { + (uc)'\000',(uc)'\001',(uc)'\002',(uc)'\003',(uc)'\004',(uc)'\005',(uc)'\006',(uc)'\007', + (uc)'\010',(uc)'\011',(uc)'\012',(uc)'\013',(uc)'\014',(uc)'\015',(uc)'\016',(uc)'\017', + (uc)'\020',(uc)'\021',(uc)'\022',(uc)'\023',(uc)'\024',(uc)'\025',(uc)'\026',(uc)'\027', + (uc)'\030',(uc)'\031',(uc)'\032',(uc)'\033',(uc)'\034',(uc)'\035',(uc)'\036',(uc)'\037', + (uc)'\040',(uc)'\041',(uc)'\042',(uc)'\043',(uc)'\044',(uc)'\045',(uc)'\046',(uc)'\047', + (uc)'\050',(uc)'\051',(uc)'\052',(uc)'\053',(uc)'\054',(uc)'\055',(uc)'\056',(uc)'\057', + (uc)'\060',(uc)'\061',(uc)'\062',(uc)'\063',(uc)'\064',(uc)'\065',(uc)'\066',(uc)'\067', + (uc)'\070',(uc)'\071',(uc)'\072',(uc)'\073',(uc)'\074',(uc)'\075',(uc)'\076',(uc)'\077', + (uc)'\100',(uc)'\141',(uc)'\142',(uc)'\143',(uc)'\144',(uc)'\145',(uc)'\146',(uc)'\147', + (uc)'\150',(uc)'\151',(uc)'\152',(uc)'\153',(uc)'\154',(uc)'\155',(uc)'\156',(uc)'\157', + (uc)'\160',(uc)'\161',(uc)'\162',(uc)'\163',(uc)'\164',(uc)'\165',(uc)'\166',(uc)'\167', + (uc)'\170',(uc)'\171',(uc)'\172',(uc)'\133',(uc)'\134',(uc)'\135',(uc)'\136',(uc)'\137', + (uc)'\140',(uc)'\141',(uc)'\142',(uc)'\143',(uc)'\144',(uc)'\145',(uc)'\146',(uc)'\147', + (uc)'\150',(uc)'\151',(uc)'\152',(uc)'\153',(uc)'\154',(uc)'\155',(uc)'\156',(uc)'\157', + (uc)'\160',(uc)'\161',(uc)'\162',(uc)'\163',(uc)'\164',(uc)'\165',(uc)'\166',(uc)'\167', + (uc)'\170',(uc)'\171',(uc)'\172',(uc)'\173',(uc)'\174',(uc)'\175',(uc)'\176',(uc)'\177', + (uc)'\200',(uc)'\201',(uc)'\202',(uc)'\203',(uc)'\204',(uc)'\205',(uc)'\206',(uc)'\207', + (uc)'\210',(uc)'\211',(uc)'\212',(uc)'\213',(uc)'\214',(uc)'\215',(uc)'\216',(uc)'\217', + (uc)'\220',(uc)'\221',(uc)'\222',(uc)'\223',(uc)'\224',(uc)'\225',(uc)'\226',(uc)'\227', + (uc)'\230',(uc)'\231',(uc)'\232',(uc)'\233',(uc)'\234',(uc)'\235',(uc)'\236',(uc)'\237', + (uc)'\240',(uc)'\241',(uc)'\242',(uc)'\243',(uc)'\244',(uc)'\245',(uc)'\246',(uc)'\247', + (uc)'\250',(uc)'\251',(uc)'\252',(uc)'\253',(uc)'\254',(uc)'\255',(uc)'\256',(uc)'\257', + (uc)'\260',(uc)'\261',(uc)'\262',(uc)'\263',(uc)'\264',(uc)'\265',(uc)'\266',(uc)'\267', + (uc)'\270',(uc)'\271',(uc)'\272',(uc)'\273',(uc)'\274',(uc)'\275',(uc)'\276',(uc)'\277', + (uc)'\300',(uc)'\341',(uc)'\342',(uc)'\343',(uc)'\344',(uc)'\345',(uc)'\346',(uc)'\347', + (uc)'\350',(uc)'\351',(uc)'\352',(uc)'\353',(uc)'\354',(uc)'\355',(uc)'\356',(uc)'\357', + (uc)'\360',(uc)'\361',(uc)'\362',(uc)'\363',(uc)'\364',(uc)'\365',(uc)'\366',(uc)'\367', + (uc)'\370',(uc)'\371',(uc)'\372',(uc)'\333',(uc)'\334',(uc)'\335',(uc)'\336',(uc)'\337', + (uc)'\340',(uc)'\341',(uc)'\342',(uc)'\343',(uc)'\344',(uc)'\345',(uc)'\346',(uc)'\347', + (uc)'\350',(uc)'\351',(uc)'\352',(uc)'\353',(uc)'\354',(uc)'\355',(uc)'\356',(uc)'\357', + (uc)'\360',(uc)'\361',(uc)'\362',(uc)'\363',(uc)'\364',(uc)'\365',(uc)'\366',(uc)'\367', + (uc)'\370',(uc)'\371',(uc)'\372',(uc)'\373',(uc)'\374',(uc)'\375',(uc)'\376',(uc)'\377', +}; + +int +strcasecmp(s1, s2) + const char *s1, *s2; +{ + register unsigned char u1, u2; + + for (;;) { + u1 = (unsigned char) *s1++; + u2 = (unsigned char) *s2++; + if (charmap[u1] != charmap[u2]) { + return charmap[u1] - charmap[u2]; + } + if (u1 == '\0') { + return 0; + } + } +} + |