diff options
Diffstat (limited to 'usr/src/lib/libast/common/string/strnacmp.c')
| -rw-r--r-- | usr/src/lib/libast/common/string/strnacmp.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/usr/src/lib/libast/common/string/strnacmp.c b/usr/src/lib/libast/common/string/strnacmp.c new file mode 100644 index 0000000000..a77d33074e --- /dev/null +++ b/usr/src/lib/libast/common/string/strnacmp.c @@ -0,0 +1,66 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1985-2007 AT&T Knowledge Ventures * +* and is licensed under the * +* Common Public License, Version 1.0 * +* by AT&T Knowledge Ventures * +* * +* A copy of the License is available at * +* http://www.opensource.org/licenses/cpl1.0.txt * +* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler <gsf@research.att.com> * +* David Korn <dgk@research.att.com> * +* Phong Vo <kpv@research.att.com> * +* * +***********************************************************************/ +#pragma prototyped + +/* + * ccmapc(c, CC_NATIVE, CC_ASCII) and strncmp + */ + +#include <ast.h> +#include <ccode.h> + +#if _lib_strnacmp + +NoN(strnacmp) + +#else + +#include <ctype.h> + +int +strnacmp(const char* a, const char* b, size_t n) +{ +#if CC_NATIVE == CC_ASCII + return strncmp(a, b, n); +#else + register unsigned char* ua = (unsigned char*)a; + register unsigned char* ub = (unsigned char*)b; + register unsigned char* ue; + register unsigned char* m; + register int c; + register int d; + + m = ccmap(CC_NATIVE, CC_ASCII); + ue = ua + n; + while (ua < ue) + { + c = m[*ua++]; + if (d = c - m[*ub++]) + return d; + if (!c) + return 0; + } + return 0; +#endif +} + +#endif |