/* * strpos.c - Returns the offset of a string in a substring. * * Copyright (c) 2001, 2002 Andre Guibert de Bruet. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification, immediately at the beginning of the file. * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ /* * You might want to place this next block in a header file somewhere: */ # ifndef wchar_t # define wchar_t wchar_t # endif /* wchar_t */ # define STRING wchar_t * int strpos( STRING haystack, STRING needle ) { STRING pDest; int position; #ifdef DEBUG_VERBOSE wchar_t lpBuf[1024]; #endif /* def DEBUG_VERBOSE */ pDest = (STRING) wcsstr( haystack, needle ); if ( pDest ) position = pDest - haystack; else { #ifdef DEBUG_VERBOSE printf( L"strpos(): Could not find '%s' in '%s'.\tFAIL.", needle, haystack ); #endif /* def DEBUG_VERBOSE */ return -1; } #ifdef DEBUG_VERBOSE printf( L"strpos(): Found '%s' at position: %d.\t\tOK.", needle, position ); #endif /* def DEBUG_VERBOSE */ return position; }