From b2cfc4e2e71d0f0a5113ddfbd93c8285cc4d74e4 Mon Sep 17 00:00:00 2001 From: rsc Date: Tue, 30 Sep 2003 17:47:41 +0000 Subject: Initial revision --- src/libutf/utfutf.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 src/libutf/utfutf.c (limited to 'src/libutf/utfutf.c') diff --git a/src/libutf/utfutf.c b/src/libutf/utfutf.c new file mode 100644 index 00000000..ea360361 --- /dev/null +++ b/src/libutf/utfutf.c @@ -0,0 +1,41 @@ +/* + * The authors of this software are Rob Pike and Ken Thompson. + * Copyright (c) 2002 by Lucent Technologies. + * Permission to use, copy, modify, and distribute this software for any + * purpose without fee is hereby granted, provided that this entire notice + * is included in all copies of any software which is or includes a copy + * or modification of this software and in all copies of the supporting + * documentation for such software. + * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY + * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY + * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. + */ +#include +#include +#include "utf.h" +#include "utfdef.h" + + +/* + * Return pointer to first occurrence of s2 in s1, + * 0 if none + */ +char* +utfutf(char *s1, char *s2) +{ + char *p; + long f, n1, n2; + Rune r; + + n1 = chartorune(&r, s2); + f = r; + if(f <= Runesync) /* represents self */ + return strstr(s1, s2); + + n2 = strlen(s2); + for(p=s1; p=utfrune(p, f); p+=n1) + if(strncmp(p, s2, n2) == 0) + return p; + return 0; +} -- cgit v1.2.3