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。
0 |  b# t' X# F2 W3 ~0 tUC4560 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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1 f$ w6 G6 s7 \3 z5 _uc4560 (view source)

Defined in: uf_cfi.h
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Checks whether the specified file of the given type exists.
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5 W7 ]. U1 C6 }* s  W* y, Y& uNOTE: Mixed or upper case file names may not be found if the
environment variable UGII_OPTION = LOWER is set.
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Passing 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
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& L* R$ F+ }4 T5 OReturn code:
< 0 = Error
1 U6 ~4 _* A" D+ Y= 0 = File Exists
= 1 = File Does Not Exist

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See Also
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* v2 B# F" V, p7 w; P+ jFor description of file types see table
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Required License(s)
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% g6 ]8 E! h1 r: _: E- A- wint uc4560
(
const char * fspec,
int ftype
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)
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const char *	fspec	Input	File to check
int	ftype	Input	File type 0 E6 J! K, |+ |  `0 will check for files 100 will check for directories

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0 K/ c0 b5 i( K+ v查找文件也可以通过UF_CFI_ask_file_exist

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Test if a file exists.

Note: This function only works with files - not directories. To check if a
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Return

0 - No error
Otherwise - Error Code
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Environment
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Internal and External


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Originally released in V16.0
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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. + h# H9 i& A5 B, j4 o' p) U0 - file exists 1 - file does not exist