1f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 2f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * The authors of this software are Rob Pike and Ken Thompson. 3f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Copyright (c) 2002 by Lucent Technologies. 4f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Permission to use, copy, modify, and distribute this software for any 59862697206250265c6bb37a4186b0a411c78de3bhbono@chromium.org * purpose without fee is hereby granted, provided that this entire notice 6f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * is included in all copies of any software which is or includes a copy 7f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * or modification of this software and in all copies of the supporting 8f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * documentation for such software. 9f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED 10f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY 11f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY 12f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. 13f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 14f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org#include <stdarg.h> 15f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org#include <string.h> 16f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org#include "utf.h" 17f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org#include "utfdef.h" 18f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 19f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 20f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 21f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Return pointer to first occurrence of s2 in s1, 22f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * 0 if none 23f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 24f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgconst 25f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgchar* 26f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgutfutf(const char *s1, const char *s2) 27f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 28f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org const char *p; 29f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org long f, n1, n2; 30f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org Rune r; 31f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 32f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org n1 = chartorune(&r, s2); 33f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org f = r; 34f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if(f <= Runesync) /* represents self */ 35f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org return strstr(s1, s2); 36f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 37f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org n2 = strlen(s2); 38f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org for(p=s1; (p=utfrune(p, f)) != 0; p+=n1) 39f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if(strncmp(p, s2, n2) == 0) 40f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org return p; 41f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org return 0; 42f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 43f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org