convert.c

该项目主要是将wingdows程序直接运行在linux上

/*
 * convert.c
 *
 * Copyright (C) 2006  Insigme Co., Ltd
 *
 * Authors: 
 * - Lixing Chu
 *
 * This software has been developed while working on the Linux Unified Kernel
 * project (http://linux.insigma.com.cn) in the Insigma Reaserch Institute,  
 * which is a subdivision of Insigma Co., Ltd (http://www.insigma.com.cn).
 * 
 * The project is sponsored by Insigma Co., Ltd.
 *
 * The authors can be reached at [e-mail].
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of  the GNU General  Public License as published by the
 * Free Software Foundation; either version 2 of the  License, or (at your
 * option) any later version.
 *
 * Revision History:
 *   Jan 2006 - Created.
 */

/*
 * convert.c:convert unicode string to char string
 */

#include <linux/module.h>
#include <linux/fs.h>
#include <linux/nls.h>
#include <linux/win32_process.h>
#include "win32.h"

#ifdef CONFIG_UNIFIED_KERNEL

extern struct ethread *thread_find(void);

int unistr2charstr(PWSTR unistr, LPCSTR chstr)
{
	struct ethread *thread;
	struct nls_table *nls;
	UCHAR *pch;
	WCHAR *wc;
	int retval = -EFAULT;
	int charlen=0;

	thread = thread_find();

	if(!thread)
		return -EINVAL;

	pch = (UCHAR *)chstr;
	nls = thread->threads_process->ep_nls;
	if(nls){
		for(wc = unistr; *wc != 0; wc++){
			retval = nls->uni2char(*wc, pch, 2);
			if(retval>0){
				charlen += retval;
				pch += retval;
			}
			else
				return retval;	
		}
		*pch = 0;
		return charlen;
	}
	return retval;
} /* end unistr2charstr() */
#endif