1/*********************************************************************** 2* * 3* This software is part of the ast package * 4* Copyright (c) 1985-2011 AT&T Intellectual Property * 5* and is licensed under the * 6* Common Public License, Version 1.0 * 7* by AT&T Intellectual Property * 8* * 9* A copy of the License is available at * 10* http://www.opensource.org/licenses/cpl1.0.txt * 11* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12* * 13* Information and Software Systems Research * 14* AT&T Research * 15* Florham Park NJ * 16* * 17* Glenn Fowler <gsf@research.att.com> * 18* David Korn <dgk@research.att.com> * 19* Phong Vo <kpv@research.att.com> * 20* * 21***********************************************************************/ 22#pragma prototyped 23 24#if defined(__STDPP__directive) && defined(__STDPP__hide) 25__STDPP__directive pragma pp:hide strstr 26#else 27#define strstr ______strstr 28#endif 29 30#include <ast.h> 31 32#if defined(__STDPP__directive) && defined(__STDPP__hide) 33__STDPP__directive pragma pp:nohide strstr 34#else 35#undef strstr 36#endif 37 38#if _lib_strstr 39 40NoN(strstr) 41 42#else 43 44#if defined(__EXPORT__) 45#define extern __EXPORT__ 46#endif 47 48extern char* 49strstr(register const char* s1, register const char* s2) 50{ 51 register int c1; 52 register int c2; 53 register const char* t1; 54 register const char* t2; 55 56 if (s2) 57 { 58 if (!*s2) 59 return (char*)s1; 60 c2 = *s2++; 61 while (c1 = *s1++) 62 if (c1 == c2) 63 { 64 t1 = s1; 65 t2 = s2; 66 do 67 { 68 if (!*t2) 69 return (char*)s1 - 1; 70 } while (*t1++ == *t2++); 71 } 72 } 73 return 0; 74} 75 76#endif 77