diff options
Diffstat (limited to 'libc/string/strstr.c')
| -rw-r--r-- | libc/string/strstr.c | 41 |
1 files changed, 36 insertions, 5 deletions
diff --git a/libc/string/strstr.c b/libc/string/strstr.c index f7ae4ffaf..7256b9da2 100644 --- a/libc/string/strstr.c +++ b/libc/string/strstr.c @@ -1,14 +1,45 @@ /* + * Copyright (C) 2002 Manuel Novoa III * Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org> * * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */ -#define L_strstr -#define Wstrstr __strstr +#include "_string.h" -#include "wstring.c" +#ifdef WANT_WIDE +# define __Wstrstr __wcsstr +# define Wstrstr wcsstr +#else +# define __Wstrstr __strstr +# define Wstrstr strstr +#endif -strong_alias(__strstr, strstr) +/* NOTE: This is the simple-minded O(len(s1) * len(s2)) worst-case approach. */ -#undef L_strstr +Wchar attribute_hidden *__Wstrstr(const Wchar *s1, const Wchar *s2) +{ + register const Wchar *s = s1; + register const Wchar *p = s2; + + do { + if (!*p) { + return (Wchar *) s1;; + } + if (*p == *s) { + ++p; + ++s; + } else { + p = s2; + if (!*s) { + return NULL; + } + s = ++s1; + } + } while (1); +} + +strong_alias(__Wstrstr,Wstrstr) +#ifdef WANT_WIDE +strong_alias(__wcsstr,wcswcs) +#endif |