使用Ufun的CFI函数直接判断文件夹和文件等操作

admin

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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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$ m: x* W3 @1 |  v5 v( C, `; ~! H& nuc4560 (view source)

' K) H; k9 S" b/ T, K, fDefined in: uf_cfi.h


Overview

$ `, I' S8 V! X1 {, W7 lChecks whether the specified file of the given type exists.

0 F; F, l1 }* z  mNOTE: Mixed or upper case file names may not be found if the
environment variable UGII_OPTION = LOWER is set.
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+ c9 X, F0 `/ }& ]5 O" }2 A5 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

! G  e6 y5 A! q2 I: [1 L7 kReturn code:
0 c: w1 x( \: P+ t1 N< 0 = Error
= 0 = File Exists
= 1 = File Does Not Exist


0 P+ ]; k& A5 m" _Environment
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Internal and External


See Also

1 ]+ Y1 m2 J2 g4 ]( I/ H( ZFor description of file types see table
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Required License(s)

gateway

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int uc4560
(
const char * fspec,
4 M) o4 i, B7 E; Y6 Y7 r- Cint ftype
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const char *	fspec	Input	File to check
int	ftype	Input	File type " e2 |+ N) j6 R2 w' W) d4 K0 will check for files 4 q% |" d- c9 R2 b, p1 h100 will check for directories

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查找文件也可以通过UF_CFI_ask_file_exist

0 T; C3 o: L5 D4 t5 qUF_CFI_ask_file_exist (view source)

Defined in: uf_cfi.h

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Overview

Test if a file exists.
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7 y! {/ u3 J* i) u" D/ b- ?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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Return

+ v. \1 L6 l) y% j) [, l8 x8 }" {9 |0 - No error
Otherwise - Error Code


8 S% ]) ?5 N1 o3 l% l' @! T% }Environment
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Internal and External
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History
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9 I5 _/ E  s( r4 Z" QOriginally released in V16.0
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Required License(s)
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gateway


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int UF_CFI_ask_file_exist
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const char * file_spec,
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const char *	file_spec	Input	The file to check
int *	status	Output	File existence status. / k; F# q8 m. q, o0 - file exists 1 - file does not exist 0 r) |% i5 T5 b* r9 Y

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