使用Ufun的CFI函数直接判断文件夹和文件等操作

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# N) Y7 }0 B: b  p  s" V( m  I在进行相关文件和文件路径判断时候，ufun提供了内置的方法。
3 ~. j/ b5 l! s0 |UC4560 通过设置第二个 参数为 100 可以判断文件夹，通过设置 为 0 可以查找文件。

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uc4560 (view source)
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Defined in: uf_cfi.h
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Checks whether the specified file of the given type exists.

' J, d" _# h# n; a: ~NOTE: Mixed or upper case file names may not be found if the
environment variable UGII_OPTION = LOWER is set.

Passing an ftype of 0 will look for a file but does not work for a directory.
/ t: m3 }( d0 u; ]' K; oTo check for a directory the ftype must be set to 100.

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Return
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Return code:
< 0 = Error
2 \& X0 V2 R: i% t  g" h6 w# d= 0 = File Exists
/ i& g* Y" \$ O+ V1 H1 B% H= 1 = File Does Not Exist
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Environment

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See Also
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8 _/ e/ D6 y# t. bFor description of file types see table
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Required License(s)

gateway

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int uc4560
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const char * fspec,
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)
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const char *	fspec	Input	File to check
int	ftype	Input	File type 2 O8 e5 O/ v# V8 b8 X. d$ k% z0 will check for files 100 will check for directories

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查找文件也可以通过UF_CFI_ask_file_exist
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, m+ O& V$ x+ {, \UF_CFI_ask_file_exist (view source)
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8 l- g% F6 {. TDefined in: uf_cfi.h
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  K5 S; ]+ K( O, w7 b6 R1 C8 eTest if a file exists.

Note: This function only works with files - not directories. To check if a
directory exists use uc4560 and pass a file type of 100.

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: V8 A) j* Z; i5 b, oReturn
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0 - No error
. y. G4 k$ u% k( G. V# |Otherwise - Error Code
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Internal and External
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History

Originally released in V16.0
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int UF_CFI_ask_file_exist
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const char *	file_spec	Input	The file to check
int *	status	Output	File existence status. 0 - file exists 1 - file does not exist ; u# x( w( H/ Y! L6 q

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