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' J( d5 J2 [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。
, L0 y  s# i' I8 o, e9 A1 `7 [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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5 v$ V1 o% P) P- E9 ruc4560 (view source)
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9 D" `' j5 I8 _. R# r" a2 ADefined in: uf_cfi.h

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Overview
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Checks whether the specified file of the given type exists.
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# G* D" _/ _3 S7 r7 ^4 mNOTE: Mixed or upper case file names may not be found if the
! K- _3 l1 H8 F6 uenvironment variable UGII_OPTION = LOWER is set.

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.


% j' Z, U4 @$ d8 NReturn

# `' d$ B1 C( o8 PReturn code:
< 0 = Error
= 0 = File Exists
! u9 G1 m8 [; |& f( b' Q- b= 1 = File Does Not Exist
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- `3 ^9 g+ L  [* PEnvironment
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! l. I6 L3 ~7 u, P, ]0 M& IInternal and External
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1 Y, w- N6 v0 e0 t. e, cSee Also
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For description of file types see table
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Required License(s)

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0 ^+ _2 U3 M8 e; `int uc4560
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const char * fspec,
int ftype
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const char *	fspec	Input	File to check
int	ftype	Input	File type 0 will check for files 100 will check for directories

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5 Q3 M4 [% q  |7 N! `0 Y3 y查找文件也可以通过UF_CFI_ask_file_exist

UF_CFI_ask_file_exist (view source)

3 J+ K3 Z9 I4 MDefined in: uf_cfi.h
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Overview

$ }2 ?+ b1 [7 @5 {( j& YTest if a file exists.
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/ M/ a8 k- Y0 ~+ I2 xNote: This function only works with files - not directories. To check if a
$ L* l* o& C/ i1 ]: Ldirectory exists use uc4560 and pass a file type of 100.


8 N, S4 Q0 y2 g0 d4 y' V  dReturn
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0 - No error
4 _" e4 j: f) ]: LOtherwise - Error Code
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% q* n: y; ?2 `Originally released in V16.0
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: f5 s+ g9 Y/ sint UF_CFI_ask_file_exist
(
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int * status
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const char *	file_spec	Input	The file to check
int *	status	Output	File existence status. 1 j- }3 f8 D5 c7 L) X0 - file exists / b3 m+ v4 a' E; x# F3 S, p' B1 - file does not exist / r& r  m' D  N& [" o' {) E/ |

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