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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6 E1 k' u7 \. ]' Cuc4560 (view source)
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5 i) Q+ b3 |* UDefined in: uf_cfi.h

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Overview

1 G. Z/ l$ W2 Q+ d+ WChecks whether the specified file of the given type exists.
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NOTE: Mixed or upper case file names may not be found if the
environment variable UGII_OPTION = LOWER is set.

( m. |6 [$ x& ^' \8 \- F" N1 kPassing an ftype of 0 will look for a file but does not work for a directory.
To check for a directory the ftype must be set to 100.

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. H& X4 K8 ^6 C  K8 L- vReturn
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Return code:
- u) r! l3 z: T7 _# q< 0 = Error
  [0 G+ o2 v  c= 0 = File Exists
= 1 = File Does Not Exist


4 d8 C. w# o# b; dEnvironment
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% ~0 Y- C( R- ~/ t: x( O( n% fInternal and External


See Also
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For description of file types see table
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4 Y) Q7 a# b; T  \' bRequired License(s)

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+ T/ U0 @! q1 T# p% r  [int uc4560
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) F& H, s! U& R; c% Q/ uconst char * fspec,
int ftype

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const char *	fspec	Input	File to check
int	ftype	Input	File type % }7 M0 x: P. C# a0 h, G* f0 will check for files 100 will check for directories

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2 r' F4 T  R8 y$ A, b查找文件也可以通过UF_CFI_ask_file_exist
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UF_CFI_ask_file_exist (view source)

& v" r9 J+ r! r4 pDefined in: uf_cfi.h


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Test if a file exists.

" o7 V0 A0 U) A, |4 T( r  CNote: This function only works with files - not directories. To check if a
1 M+ ?( A% D) G" L4 A* [directory exists use uc4560 and pass a file type of 100.
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Return
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  n% a  {& m+ l, \5 A4 d' a0 - No error
Otherwise - Error Code

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Environment
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Internal and External


History
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& W$ ?  h& I9 f; l. c8 t  j7 oOriginally released in V16.0

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Required License(s)

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int UF_CFI_ask_file_exist
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const char * file_spec,
int * status

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const char *	file_spec	Input	The file to check
int *	status	Output	File existence status. 0 - file exists * ^7 ]& A5 L5 E: y( H1 - file does not exist ! O) D  l8 J2 j& g/ q