使用Ufun的CFI函数直接判断文件夹和文件等操作

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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。
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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7 s. O9 C0 K+ A$ [1 u, kuc4560 (view source)
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- y' h; s* Y+ f( l& FDefined in: uf_cfi.h
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Overview
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3 V* S) y7 B$ l2 `' U  u0 aChecks whether the specified file of the given type exists.
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6 y0 V7 K2 k3 O( i$ \  P, nNOTE: Mixed or upper case file names may not be found if the
& ^1 m* J4 Z/ _# q* v- b5 Nenvironment variable UGII_OPTION = LOWER is set.
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( u3 C5 p3 f5 T/ H6 SPassing an ftype of 0 will look for a file but does not work for a directory.
  c- A% x! U+ W/ }; |" C4 DTo check for a directory the ftype must be set to 100.


8 N+ P0 c& e2 wReturn
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7 x! H& Q! j3 j( y, ^& r6 d, v" QReturn code:
< 0 = Error
* N, A9 X6 k9 p# W= 0 = File Exists
- P  D3 S% l) B& B2 _( Z= 1 = File Does Not Exist
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Environment
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Internal and External


1 w3 D$ q% a4 Q2 p% h& C# ^See Also
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) `, I# L& O0 O& ^For description of file types see table


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int uc4560
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const char * fspec,
, H1 t& B* u! p+ o+ Y( i( V) zint ftype
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const char *	fspec	Input	File to check
int	ftype	Input	File type 0 will check for files 100 will check for directories

查找文件也可以通过UF_CFI_ask_file_exist

UF_CFI_ask_file_exist (view source)

Defined in: uf_cfi.h
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Overview
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* T2 G8 P- K: O( ~. \3 ITest if a file exists.
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0 P7 d' I6 B3 d; r/ y' O7 q6 {Note: This function only works with files - not directories. To check if a
3 P: J2 r7 S+ V6 i9 idirectory exists use uc4560 and pass a file type of 100.
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Return
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( A4 g+ Y, I. F8 I  U6 A0 - No error
) p& d+ m' r3 a! {1 W7 d! pOtherwise - Error Code
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$ [2 D8 I3 \4 qEnvironment
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7 [6 n) p  E& s% L6 C0 j8 rInternal and External


History
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0 v8 G* \4 Y& P7 |# T7 i3 jOriginally released in V16.0
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gateway
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int UF_CFI_ask_file_exist
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const char * file_spec,
int * status

)

const char *	file_spec	Input	The file to check
int *	status	Output	File existence status. 0 R, T2 u) t$ f3 P) |0 - file exists $ U9 O2 U* E3 j& U1 - file does not exist

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