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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2 c# X3 y& c" A0 Fuc4560 (view source)
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Defined in: uf_cfi.h


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& S3 W2 S2 K5 Q) m* w: z. KChecks whether the specified file of the given type exists.

. n' L+ u+ J2 R2 ]2 T4 P8 h3 }NOTE: 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 code:
< 0 = Error
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, \0 ^+ L7 z0 D= 1 = File Does Not Exist
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- Y! M5 y/ C2 p7 \  p2 K9 o0 }Environment
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Internal and External

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$ s9 ~3 A+ O# v5 a# uSee Also

4 G1 }# K4 q7 h, ^For description of file types see table

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9 R4 L& E7 m9 mRequired License(s)
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gateway

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int uc4560
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- J2 T9 n9 x, S, W6 V' B: H  j0 cconst char * fspec,
1 j4 F$ A( Y) Gint 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
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UF_CFI_ask_file_exist (view source)
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Defined in: uf_cfi.h
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Test if a file exists.
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Note: This function only works with files - not directories. To check if a
directory exists use uc4560 and pass a file type of 100.


Return
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0 - No error
Otherwise - Error Code


Environment
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History
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; R) K" n$ A7 R5 }8 pOriginally released in V16.0
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gateway
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3 J, |+ a+ e  V) bint UF_CFI_ask_file_exist
(
( v' b7 F, v; d+ b8 R. E/ oconst 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 3 ~8 h# J/ ?9 f1 - file does not exist

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