使用Ufun的CFI函数直接判断文件夹和文件等操作

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, s( m$ j5 C, G, c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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6 _4 A. s+ S" x% o( Muc4560 (view source)

% t# Q6 w; ?9 mDefined in: uf_cfi.h

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Overview

Checks whether the specified file of the given type exists.

5 u9 }* p+ S" k! J4 o- ^& Z4 _/ {NOTE: Mixed or upper case file names may not be found if the
environment variable UGII_OPTION = LOWER is set.

+ a7 J! f0 y* y: q6 W4 j, R2 D. I' {Passing an ftype of 0 will look for a file but does not work for a directory.
/ Q; r( }* i. uTo check for a directory the ftype must be set to 100.
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Return

; E+ z# y+ ^8 w" R8 C6 _Return code:
< 0 = Error
= 0 = File Exists
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Environment
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8 V8 ?8 Y6 O" f) D/ wInternal and External


- O0 o7 k  m! l$ l! `7 M8 ~See Also

6 [2 C# |+ b% h- d# v" Z* GFor description of file types see table
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. j% t7 j* ^8 E6 \, R4 P& bRequired License(s)

gateway
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2 [5 P) o2 A$ Gint uc4560
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const char * fspec,
% t) J/ `+ s/ ~/ @int ftype

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const char *	fspec	Input	File to check
int	ftype	Input	File type % B: X9 ^& W9 e/ T0 will check for files 6 j* `) a: L1 B- ~' s! h100 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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% q; T! H0 v' H; t0 kUF_CFI_ask_file_exist (view source)
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Defined in: uf_cfi.h
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Overview
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; l, ^) M: x* R- @2 _Test if a file exists.
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Note: This function only works with files - not directories. To check if a
8 Z2 `, C8 U" t  A2 s0 ?! zdirectory exists use uc4560 and pass a file type of 100.


" C, E; z8 @2 ]) Q) pReturn

0 - No error
Otherwise - Error Code

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9 H* C9 E  R" x! U! J0 h* bEnvironment

( X$ T3 o) E+ \1 X% w% AInternal and External
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, z1 d6 g6 k. {7 y/ m8 mOriginally released in V16.0
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Required License(s)

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: _$ U) u9 N# Yint 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. 3 `, [/ R, c, l1 Y$ q' S/ `0 - file exists ( b2 S+ g7 x. l' L3 ~9 n5 T; U# H2 K1 - file does not exist

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