109 lines
2.9 KiB
C++
109 lines
2.9 KiB
C++
|
/***
|
||
|
|
*wcstok.c - tokenize a wide-character string with given delimiters
|
||
|
|
*
|
||
|
|
* Copyright (c) 1989-1993, Microsoft Corporation. All rights reserved.
|
||
|
|
*
|
||
|
|
*Purpose:
|
||
|
|
* defines wcstok() - breaks wide-character string into series of token
|
||
|
|
* via repeated calls.
|
||
|
|
*
|
||
|
|
*Revision History:
|
||
|
|
* 09-09-91 ETC Created from strtok.c.
|
||
|
|
* 08-17-92 KRS Activate multithread support.
|
||
|
|
* 02-17-93 GJF Changed for new _getptd().
|
||
|
|
* 11-14-95 JAE Break dependence on C RTL's per-thread data
|
||
|
|
*
|
||
|
|
*******************************************************************************/
|
||
|
|
|
||
|
|
#include <windows.h>
|
||
|
|
#include <cruntime.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <ole2.h>
|
||
|
|
#include <debnot.h>
|
||
|
|
#include "tls.h"
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/***
|
||
|
|
*wchar_t *wcstok(string, control) - tokenize string with delimiter in control
|
||
|
|
* (wide-characters)
|
||
|
|
*
|
||
|
|
*Purpose:
|
||
|
|
* wcstok considers the string to consist of a sequence of zero or more
|
||
|
|
* text tokens separated by spans of one or more control chars. the first
|
||
|
|
* call, with string specified, returns a pointer to the first wchar_t of
|
||
|
|
* the first token, and will write a null wchar_t into string immediately
|
||
|
|
* following the returned token. subsequent calls with zero for the first
|
||
|
|
* argument (string) will work thru the string until no tokens remain. the
|
||
|
|
* control string may be different from call to call. when no tokens remain
|
||
|
|
* in string a NULL pointer is returned. remember the control chars with a
|
||
|
|
* bit map, one bit per wchar_t. the null wchar_t is always a control char
|
||
|
|
* (wide-characters).
|
||
|
|
*
|
||
|
|
*Entry:
|
||
|
|
* wchar_t *string - wchar_t string to tokenize, or NULL to get next token
|
||
|
|
* wchar_t *control - wchar_t string of characters to use as delimiters
|
||
|
|
*
|
||
|
|
*Exit:
|
||
|
|
* returns pointer to first token in string, or if string
|
||
|
|
* was NULL, to next token
|
||
|
|
* returns NULL when no more tokens remain.
|
||
|
|
*
|
||
|
|
*Uses:
|
||
|
|
*
|
||
|
|
*Exceptions:
|
||
|
|
*
|
||
|
|
*******************************************************************************/
|
||
|
|
|
||
|
|
wchar_t * __cdecl wcstok (
|
||
|
|
wchar_t * string,
|
||
|
|
const wchar_t * control
|
||
|
|
)
|
||
|
|
{
|
||
|
|
COleTls TlsContext;
|
||
|
|
wchar_t *token;
|
||
|
|
const wchar_t *ctl;
|
||
|
|
|
||
|
|
|
||
|
|
/* If string==NULL, continue with previous string */
|
||
|
|
if (!string)
|
||
|
|
string = (wchar_t *)TlsContext->pWcstokContext;
|
||
|
|
|
||
|
|
|
||
|
|
/* Find beginning of token (skip over leading delimiters). Note that
|
||
|
|
* there is no token iff this loop sets string to point to the terminal
|
||
|
|
* null (*string == '\0') */
|
||
|
|
|
||
|
|
while (*string) {
|
||
|
|
for (ctl=control; *ctl && *ctl != *string; ctl++)
|
||
|
|
;
|
||
|
|
if (!*ctl) break;
|
||
|
|
string++;
|
||
|
|
}
|
||
|
|
|
||
|
|
token = string;
|
||
|
|
|
||
|
|
/* Find the end of the token. If it is not the end of the string,
|
||
|
|
* put a null there. */
|
||
|
|
for ( ; *string ; string++ ) {
|
||
|
|
for (ctl=control; *ctl && *ctl != *string; ctl++)
|
||
|
|
;
|
||
|
|
if (*ctl) {
|
||
|
|
*string++ = '\0';
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Update nextoken (or the corresponding field in the per-thread data
|
||
|
|
* structure */
|
||
|
|
|
||
|
|
TlsContext->pWcstokContext = string;
|
||
|
|
|
||
|
|
|
||
|
|
/* Determine if a token has been found. */
|
||
|
|
if ( token == string )
|
||
|
|
return NULL;
|
||
|
|
else
|
||
|
|
return token;
|
||
|
|
}
|