string.cpp
上传用户:zhongxx05
上传日期:2007-06-06
资源大小:33641k
文件大小:5k
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "hlxclib/string.h"
- char * __helix_strrev(char * str)
- {
- int SmallIndex = 0;
- int BigIndex = strlen(str) - 1;
-
- while (SmallIndex < BigIndex) {
- char Temp = str[SmallIndex];
-
- str[SmallIndex] = str[BigIndex];
- str[BigIndex] = Temp;
-
- SmallIndex++;
- BigIndex--;
- }
-
- return str;
- }
- void __helix_strlwr(char *s)
- {
- for (; *s; s++)
- {
- if ((*s <= 'Z') && (*s >= 'A'))
- *s += ('a' - 'A');
- }
- }
- void __helix_strupr(char *s)
- {
- for (; *s; s++)
- {
- if ((*s <= 'z') && (*s >= 'a'))
- *s -= ('a' - 'A');
- }
- }
- #ifdef _WINCE
- int strcasecmp(const char* str1, const char* str2)
- {
- int f=0,l=0;
- do
- {
- if ( ((f = (unsigned char) (*(str1++))) >= 'A') &&
- (f <= 'Z') )
- f -= 'A' - 'a';
-
- if ( ((l = (unsigned char) (*(str2++))) >= 'A') &&
- (l <= 'Z') )
- l -= 'A' - 'a';
- } while (f && (f == l) );
- return ( f - l );
- }
- #endif //_WINCE
- #ifdef _SYMBIAN
- #undef strtoul
- unsigned long __helix_strtoul(const char*s, char**end, int base)
- {
- /* Symbian doesn't like leading +/- signs. So, strip and apply
- * later.
- */
- int t=1;
- if(s && (*s=='-' || *s=='+'))
- {
- if(*s=='-')
- t=-1;
- ++s;
- }
- return t*strtoul(s, end, base);
- }
- #endif
- /*___________________________________________________________________________
- *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- * __helix_strnstr(sc, str, n)
- *
- * PARAMETERS:
- * sc search string
- * str string to be found
- * n len of sc
- *
- * DESCRIPTION:
- * finds a string in a string with a length restriction
- *
- * RETURNS
- * points to position in sc of str. or NULL if not found
- *___________________________________________________________________________
- *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
- const char*
- __helix_strnstr(const char* sc, const char* str, size_t n)
- {
- if ( !sc || !*sc )
- {
- return NULL;
- }
- else if ( !str || !*str )
- {
- return sc;
- }
- size_t len = strlen(str);
- for ( int i = 0; i < n && strlen(sc) > len; i++, sc++ )
- {
- if ( !strncmp(sc, str, len) )
- {
- return sc;
- }
- }
- return NULL;
- }
- /*___________________________________________________________________________
- *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- * __helix_strnchr(sc, str, n)
- *
- * PARAMETERS:
- * sc search string
- * c character to be found
- * n len of sc
- *
- * DESCRIPTION:
- * finds a character in a string with a length restriction
- *
- * RETURNS
- * points to position in sc of c. or NULL if not found
- *___________________________________________________________________________
- *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
- const char*
- __helix_strnchr(const char* sc, const char c, size_t n)
- {
- for ( int i = 0; i < n && *sc; ++i, ++sc)
- {
- if ( *sc == c )
- {
- return sc;
- }
- }
- return NULL;
- }