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188 lines
4.1 KiB
188 lines
4.1 KiB
/***
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*putwch.c - write a wide character to console
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*
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* Copyright (c) 1993-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* defines _putwch() - writes a wide character to a console
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*
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*Revision History:
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* 02-11-00 GB Module Created.
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* 04-25-00 GB Made putwch more robust in using WriteConsoleW
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* 05-17-00 GB Use ERROR_CALL_NOT_IMPLEMENTED for existance of W API
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* 11-22-00 PML Wide-char *putwc* functions take a wchar_t, not wint_t.
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*
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*******************************************************************************/
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#ifndef _POSIX_
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#include <stdlib.h>
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#include <conio.h>
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#include <io.h>
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#include <errno.h>
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#include <cruntime.h>
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#include <stdio.h>
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#include <dbgint.h>
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#include <file2.h>
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#include <internal.h>
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#include <mtdll.h>
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#include <limits.h>
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/*
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* declaration for console handle
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*/
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extern intptr_t _confh;
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/***
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*wint_t _putwch(ch) - write a wide character to a console
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*
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*Purpose:
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* Writes a wide character to a console.
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*
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*Entry:
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* wchar_t ch - wide character to write
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*
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*Exit:
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* returns the wide character if successful
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* returns WEOF if fails
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*
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*Exceptions:
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*
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*******************************************************************************/
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#ifdef _MT
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wint_t _CRTIMP __cdecl _putwch (
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wchar_t ch
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)
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{
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REG2 wint_t retval;
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_mlock(_CONIO_LOCK);
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__try {
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retval = _putwch_lk(ch);
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}
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__finally {
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_munlock(_CONIO_LOCK);
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}
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return(retval);
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}
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/***
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*_putwch_lk() - _putwch() core routine (locked version)
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*
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*Purpose:
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* Core _putwch() routine; assumes stream is already locked.
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*
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* [See _putwch() above for more info.]
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*
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*Entry: [See _putwch()]
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*
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*Exit: [See _putwch()]
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*
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*Exceptions:
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*
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*******************************************************************************/
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wint_t __cdecl _putwch_lk (
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wchar_t ch
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)
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{
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#else
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wint_t _CRTIMP __cdecl _putwch (
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wchar_t ch
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)
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{
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#endif
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int size, i, num_written;
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static int use_w = 2;
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char mbc[MB_LEN_MAX +1];
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if ( use_w)
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{
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if (_confh == -2)
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__initconout();
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/* write character to console file handle */
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if (_confh == -1)
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return WEOF;
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else if ( !WriteConsoleW( (HANDLE)_confh,
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(LPVOID)&ch,
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1,
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&num_written,
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NULL )
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)
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{
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if ( use_w == 2 && GetLastError() == ERROR_CALL_NOT_IMPLEMENTED)
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use_w = 0;
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else
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return WEOF;
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} else
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use_w = 1;
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}
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if ( use_w == 0)
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{
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size = WideCharToMultiByte(
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GetConsoleOutputCP(),
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0,
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(LPWSTR)&ch, 1,
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mbc,
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MB_LEN_MAX,
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NULL,
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NULL
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);
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for ( i = 0; i < size; i++)
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{
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if (_putch_lk(mbc[i]) == EOF)
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return WEOF;
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}
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}
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return ch;
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}
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/***
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* _cputws() - _cputws() writes a wide char string to console.
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*
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* Purpose:
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* Writes a wide char string to console.
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*
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* Entry:
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* str: pointer to string
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* Exit:
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* returns 0 if sucessful. Nonzero if unsucessful
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*
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*******************************************************************************/
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int _CRTIMP __cdecl _cputws(
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const wchar_t *str
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)
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{
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size_t len;
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int retval = 0;
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len = wcslen(str);
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#ifdef _MT
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_mlock(_CONIO_LOCK);
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__try {
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#endif
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while(len--)
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{
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if ( _putwch_lk(*str++) == WEOF)
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{
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retval = -1;
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break;
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}
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}
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#ifdef _MT
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}
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__finally {
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_munlock(_CONIO_LOCK);
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}
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#endif
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return retval;
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}
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#endif /* _POSIX_ */
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