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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uc4560 (view source)

Defined in: uf_cfi.h


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. C  z$ f' I/ b3 \6 RChecks 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.

7 |9 }( K+ |3 S9 |4 U# hPassing 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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Return code:
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( S# ?7 _; H5 C# j6 i- T" n8 |" R= 0 = File Exists
= 1 = File Does Not Exist


! h3 h. u3 y2 o. }( LEnvironment
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For description of file types see table
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Required License(s)

gateway
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int uc4560
(
const char * fspec,
int ftype
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const char *	fspec	Input	File to check
int	ftype	Input	File type 6 Q" }" R+ N7 L6 ~: d/ h0 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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Defined in: uf_cfi.h


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( B" A- h5 k( o2 P+ oTest 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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7 [0 H0 k% [) Z! p0 - No error
) v! ?" f2 h7 x) v+ s9 O5 D' ]  xOtherwise - Error Code
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Internal and External
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History
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/ N4 M; m4 h/ T+ x- B4 zOriginally released in V16.0
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. H; l' s& \' d2 W: n5 t8 URequired License(s)

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- y' ]; b% m  M7 c! }5 \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 ! ]  A+ \+ P4 H. `1 A4 k7 Q* F: C1 - file does not exist

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