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。




uc4560 (view source)

Defined in: uf_cfi.h
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Overview

Checks whether the specified file of the given type exists.
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+ y1 H% P6 _: \9 _( QNOTE: Mixed or upper case file names may not be found if the
environment variable UGII_OPTION = LOWER is set.

1 u: d9 ~# `: W$ pPassing 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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/ H+ h3 ~# J" @0 V! W) z& g* GReturn
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Return code:
- v$ s" I& W( M( K, [( C< 0 = Error
( {: A8 G  j4 p1 M5 C= 0 = File Exists
; p$ ~* A9 i1 j: \9 `= 1 = File Does Not Exist

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Environment
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Internal and External

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See Also
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  V( V6 N; g( A/ T5 X, G/ hFor description of file types see table

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: k# p# m0 I1 j2 YRequired License(s)

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/ P% s2 R4 b8 W& W2 G5 gint uc4560
(
0 ]' S6 P; k! p1 P- aconst char * fspec,
int ftype
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)

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const char *	fspec	Input	File to check
int	ftype	Input	File type ! f# X1 \5 G% A0 will check for files - X! V/ O9 X, [" Q; }100 will check for directories

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- |' b: i$ z* v% n; X查找文件也可以通过UF_CFI_ask_file_exist

UF_CFI_ask_file_exist (view source)

Defined in: uf_cfi.h
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Overview

8 k' ?3 H2 L/ x7 o! N! JTest if a file exists.

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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0 }8 ^1 v4 g, N. ?  b/ ~1 f/ GReturn

+ w5 {6 f' ~9 P# z; l0 - 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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: Z7 o8 v' x1 _% K* JRequired License(s)
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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. ( X' f4 K! c( i3 G8 S4 ~0 - file exists & \; V/ n" V& X1 - file does not exist : }( v, C5 ?; k  E' `

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