使用Ufun的CFI函数直接判断文件夹和文件等操作

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) Y# \& }7 S! G" s8 l2 T6 w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。
3 z7 o1 y: J9 c; H+ C+ KUC4560 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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  v7 G$ F% M( w) v1 A5 A8 ouc4560 (view source)
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Defined in: uf_cfi.h
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Overview

Checks whether the specified file of the given type exists.
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* R3 @4 u3 q& j+ D5 F) B9 KNOTE: Mixed or upper case file names may not be found if the
7 J6 ]: S: }& n8 f' `5 }environment variable UGII_OPTION = LOWER is set.
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5 j- T, r# T- Y: W3 b3 J- R2 zPassing 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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" _; s% m* I2 q1 E+ i# k2 o& EReturn code:
< 0 = Error
= 0 = File Exists
= 1 = File Does Not Exist
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5 K  @6 w* V7 X  j0 d2 ZEnvironment

Internal and External
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See Also
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' g2 `$ }9 I+ o' DFor description of file types see table

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; U+ T. i6 @- {  y9 V1 cRequired License(s)
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0 `  e' u, `4 ~( pint uc4560
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8 k1 X, E9 ^! C( r; Vconst char * fspec,
int ftype

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const char *	fspec	Input	File to check
int	ftype	Input	File type " Q% K6 ^; b9 @# Q0 will check for files 100 will check for directories

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. U5 U, E0 J# N7 G$ e3 s查找文件也可以通过UF_CFI_ask_file_exist

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6 }$ h. g- y; ^: eDefined in: uf_cfi.h


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Test if a file exists.

: ^  g2 Q+ ^+ B/ O# H" iNote: This function only works with files - not directories. To check if a
directory exists use uc4560 and pass a file type of 100.


+ H9 v9 ~; v4 g$ O/ k1 UReturn

! k5 n5 b$ D% f6 S0 - No error
+ }: H2 {& j4 F( L; AOtherwise - Error Code


Environment
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Internal and External


History
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, C* V: Y' @+ z2 d+ a% f" W( ]Originally released in V16.0
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9 U" l* _, U, y, Tint 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. : t5 U. x# m2 Q( j: P8 w1 y0 - file exists 4 g7 y5 z1 \, i4 C, k- m6 a9 v" b1 - file does not exist ! V1 p- F/ `7 M