使用Ufun的CFI函数直接判断文件夹和文件等操作

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/ v8 b7 t, t& f* e- E3 C. y) ^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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. P3 m% P$ h, p! o. puc4560 (view source)

/ l7 X; U6 W5 LDefined in: uf_cfi.h
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Overview
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0 R, _5 i/ o5 S; F, QChecks whether the specified file of the given type exists.

. ~8 }1 I3 z, r7 u7 p) LNOTE: 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
= 0 = File Exists
0 W5 r) D! E  d/ B, L( c8 p7 |$ H= 1 = File Does Not Exist
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" ]. D' I6 n; t/ k( A; OEnvironment

# |8 @% O4 s6 g5 A$ ~Internal and External


See Also
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For description of file types see table
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Required License(s)
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int uc4560
(
const char * fspec,
3 v7 K9 b9 O  Yint ftype
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)
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const char *	fspec	Input	File to check
int	ftype	Input	File type $ S/ N0 v. U) ]6 C7 I" H% ^0 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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UF_CFI_ask_file_exist (view source)
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0 ]4 J- s/ e  u5 J4 iDefined in: uf_cfi.h
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Test if a file exists.

Note: This function only works with files - not directories. To check if a
, X/ s& _6 f/ {' U& o5 Gdirectory exists use uc4560 and pass a file type of 100.

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# C1 u( r9 s& j# C8 t% K0 - No error
Otherwise - Error Code
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Internal and External
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History
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Originally released in V16.0
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Required License(s)

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int UF_CFI_ask_file_exist
(
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 1 - file does not exist , h$ K# Y) k! }1 I- r9 ~

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