diff options
Diffstat (limited to 'compat/strstr.c')
| -rw-r--r-- | compat/strstr.c | 36 |
1 files changed, 19 insertions, 17 deletions
diff --git a/compat/strstr.c b/compat/strstr.c index 59296db..6698c9f 100644 --- a/compat/strstr.c +++ b/compat/strstr.c @@ -6,12 +6,15 @@ * Copyright (c) 1988-1993 The Regents of the University of California. * Copyright (c) 1994 Sun Microsystems, Inc. * - * See the file "license.terms" for information on usage and redistribution - * of this file, and for a DISCLAIMER OF ALL WARRANTIES. - * - * SCCS: @(#) strstr.c 1.4 96/02/15 12:08:22 + * See the file "license.terms" for information on usage and redistribution of + * this file, and for a DISCLAIMER OF ALL WARRANTIES. */ +#include "tcl.h" +#ifndef NULL +#define NULL 0 +#endif + /* *---------------------------------------------------------------------- * @@ -20,12 +23,10 @@ * Locate the first instance of a substring in a string. * * Results: - * If string contains substring, the return value is the - * location of the first matching instance of substring - * in string. If string doesn't contain substring, the - * return value is 0. Matching is done on an exact - * character-for-character basis with no wildcards or special - * characters. + * If string contains substring, the return value is the location of the + * first matching instance of substring in string. If string doesn't + * contain substring, the return value is 0. Matching is done on an exact + * character-for-character basis with no wildcards or special characters. * * Side effects: * None. @@ -34,15 +35,16 @@ */ char * -strstr(string, substring) - register char *string; /* String to search. */ - char *substring; /* Substring to try to find in string. */ +strstr( + register char *string, /* String to search. */ + char *substring) /* Substring to try to find in string. */ { register char *a, *b; - /* First scan quickly through the two strings looking for a - * single-character match. When it's found, then compare the - * rest of the substring. + /* + * First scan quickly through the two strings looking for a + * single-character match. When it's found, then compare the rest of the + * substring. */ b = substring; @@ -64,5 +66,5 @@ strstr(string, substring) } b = substring; } - return (char *) 0; + return NULL; } |