diff options
Diffstat (limited to 'usr/src/lib/libast/common/comp/strstr.c')
| -rw-r--r-- | usr/src/lib/libast/common/comp/strstr.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/usr/src/lib/libast/common/comp/strstr.c b/usr/src/lib/libast/common/comp/strstr.c new file mode 100644 index 0000000000..ea4b78dc40 --- /dev/null +++ b/usr/src/lib/libast/common/comp/strstr.c @@ -0,0 +1,76 @@ +/*********************************************************************** +* * +* 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 + +#if defined(__STDPP__directive) && defined(__STDPP__hide) +__STDPP__directive pragma pp:hide strstr +#else +#define strstr ______strstr +#endif + +#include <ast.h> + +#if defined(__STDPP__directive) && defined(__STDPP__hide) +__STDPP__directive pragma pp:nohide strstr +#else +#undef strstr +#endif + +#if _lib_strstr + +NoN(strstr) + +#else + +#if defined(__EXPORT__) +#define extern __EXPORT__ +#endif + +extern char* +strstr(register const char* s1, register const char* s2) +{ + register int c1; + register int c2; + register const char* t1; + register const char* t2; + + if (s2) + { + if (!*s2) + return (char*)s1; + c2 = *s2++; + while (c1 = *s1++) + if (c1 == c2) + { + t1 = s1; + t2 = s2; + do + { + if (!*t2) + return (char*)s1 - 1; + } while (*t1++ == *t2++); + } + } + return 0; +} + +#endif |