102 lines
2.6 KiB
C
102 lines
2.6 KiB
C
/***
|
|
*wperror.c - print system error message (wchar_t version)
|
|
*
|
|
* Copyright (c) 1993-2001, Microsoft Corporation. All rights reserved.
|
|
*
|
|
*Purpose:
|
|
* defines _wperror() - print wide system error message
|
|
* System error message are indexed by errno.
|
|
*
|
|
*Revision History:
|
|
* 12-07-93 CFW Module created from perror.
|
|
* 02-07-94 CFW POSIXify.
|
|
* 01-10-95 CFW Debug CRT allocs.
|
|
* 01-06-98 GJF Exception-safe locking.
|
|
* 09-23-98 GJF Fixed handling of NULL or empty string arg.
|
|
* 01-06-99 GJF Changes for 64-bit size_t.
|
|
*
|
|
*******************************************************************************/
|
|
|
|
#ifndef _POSIX_
|
|
|
|
#include <cruntime.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <syserr.h>
|
|
#include <mtdll.h>
|
|
#include <io.h>
|
|
#include <dbgint.h>
|
|
|
|
/***
|
|
*void _wperror(wmessage) - print system error message
|
|
*
|
|
*Purpose:
|
|
* prints user's error message, then follows it with ": ", then the system
|
|
* error message, then a newline. All output goes to stderr. If user's
|
|
* message is NULL or a null string, only the system error message is
|
|
* printer. If errno is weird, prints "Unknown error".
|
|
*
|
|
*Entry:
|
|
* const wchar_t *wmessage - users message to prefix system error message
|
|
*
|
|
*Exit:
|
|
* Prints message; no return value.
|
|
*
|
|
*Exceptions:
|
|
*
|
|
*******************************************************************************/
|
|
|
|
void __cdecl _wperror (
|
|
const wchar_t *wmessage
|
|
)
|
|
{
|
|
int fh = 2;
|
|
size_t size;
|
|
char *amessage;
|
|
|
|
/* convert WCS string into ASCII string */
|
|
|
|
if ( wmessage && *wmessage )
|
|
{
|
|
size = wcslen(wmessage) + 1;
|
|
|
|
if ( NULL == (amessage = (char *)_malloc_crt(size * sizeof(char))) )
|
|
return;
|
|
|
|
if ( 0 >= wcstombs(amessage, wmessage, size) )
|
|
{
|
|
_free_crt(amessage);
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
amessage = NULL;
|
|
|
|
#ifdef _MT
|
|
_lock_fh( fh ); /* acquire file handle lock */
|
|
__try {
|
|
#endif
|
|
|
|
if ( amessage )
|
|
{
|
|
_write_lk(fh,(char *)amessage,(unsigned)strlen(amessage));
|
|
_write_lk(fh,": ",2);
|
|
}
|
|
|
|
_free_crt(amessage); /* note: freeing NULL is legal and benign */
|
|
|
|
amessage = _sys_err_msg( errno );
|
|
_write_lk(fh,(char *)amessage,(unsigned)strlen(amessage));
|
|
_write_lk(fh,"\n",1);
|
|
|
|
#ifdef _MT
|
|
}
|
|
__finally {
|
|
_unlock_fh( fh ); /* release file handle lock */
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#endif /* _POSIX_ */
|