fileutil.c

norflash的文件系统。 用于中低端手机开发的参考

/*****************************************************************************
 
  FILE NAME: fileutil.c

  DESCRIPTION:

    This module contains utility functions used in FSM.

 Copyright (c) 2002, VIA Technologies, Inc.
*****************************************************************************/


#include "fsmdefs.h"
#include "String.h"


/*
 0  : can't get the first path
 !0 : success.
*/
uint32 GetFirstPath(const char * path, uint32 * start, uint32 * length)
{
	if(path == NULL)
		return 0;

	*start = 0;
	*length = 0;

	while((*path ==  '/') || (*path == '\\'))
	{
		path++;
		(*start)++;
	}

	while(*path != 0)
	{
		if((*path == '/') || (*path == '\\'))
			break;

		path++;
		(*length)++;
	}

	return (*length != 0);
}

char * ExtractFilename(const char * path)
{
	uint32		len;

	if(path == NULL)
		return NULL;

	len = strlen(path);

	if(len == 0)
		return NULL;

	while(len > 0)
	{
		if((path[len - 1] == '/') || (path[len - 1] == '\\'))
		{
			break;
		}
		len--;
	}

	return ((char *)(&path[len]));
}

/*
 0  : no directory found.
 !0 : success, directory end char postion is returned in end parameter.
 */
uint32 ExtractDir(const char * path, uint32 * end)
{
	char  *		filename;

	if(path == NULL)
		return 0;

	filename = ExtractFilename(path);

	if(filename == NULL)
		return 0;

	*end = strlen(path) - strlen(filename);

	return 1;
}


/* return 1 means matched */
uint32 FsmStringMatched(char *mode, char *src)
{
	int i=0;
	int	j=0;
	
	while(1)
	{
		if(mode[i]==0)
		{
			if(src[j]==0)
				return 1;
			else
				return 0;
		}
		if(src[j]==0)
		{
			if(mode[i]!='*')
				return 0;
			else
			{
				i++;
				continue;
			}
		}
		
		if(mode[i]=='*')
		{
			while(1)
			{
				if(mode[i]==0)
					return 1;
				else if(mode[i]=='*')
				{
					i++;
					continue;
				}
				else
					break;
			}
			while(1)
			{
				if(src[j]==0)
					return 0;
				if(FsmStringMatched(&mode[i],&src[j]) == 1)
					return 1;
				else
				{
					j++;
					continue;
				}
			}
		}
		else if(mode[i]=='?')
		{
			while(mode[i]=='?')
			{
				if(src[j]==0)
					return 0;
				j++; i++;
			}
		}
		else
		{
			if (src[j]!=mode[i])
				return 0;
			else
			{
				i++; j++;
			}
		}
	}
}


/*****************************************************************************
* $Log: fileutil.c $
* Revision 1.3  2004/03/17 12:57:48  zgy
* Revision 1.23  2004/03/16 15:54:13  jjs
* Revision 1.22  2004/03/11 14:35:20  jjs
* moved some function definitions to appropriate files.
* Revision 1.21  2003/11/11 11:30:04  jjs
* Added funtion definition of DfsFilenameValid.
* Revision 1.20  2003/11/05 11:38:29  jjs
* Revision 1.19  2003/11/05 11:07:20  jjs
* replaced the // with / * * /
* Revision 1.17  2003/10/08 21:09:24  jjs
* Revision 1.16  2003/10/08 18:11:38  jjs
* Revision 1.15  2003/10/08 12:43:35  jjs
* Revision 1.14  2003/09/19 14:08:30  wsm
* Revision 1.13  2003/09/16 18:06:10  wsm
* Revision 1.12  2003/09/16 17:02:27  wsm
* Revision 1.11  2003/09/16 11:26:30  wsm
* Revision 1.10  2003/09/15 09:42:43  wsm
* Revision 1.9  2003/09/14 16:57:02  jjs
* Revision 1.8  2003/09/12 15:25:44  wsm
* Revision 1.7  2003/09/12 14:52:43  wsm
* Revision 1.6  2003/09/12 14:26:55  wsm
* Revision 1.5  2003/09/12 10:15:46  wsm
* corretc code style 
* Revision 1.4  2003/09/11 14:56:29  wsm
* update output message
* Revision 1.3  2003/09/11 09:47:58  wsm
* update the Macro name
* Revision 1.2  2003/09/10 19:09:34  wsm
* Revision 1.1  2003/09/09 15:07:32  wsm
* Initial revision
*****************************************************************************/