使用Ufun的CFI函数直接判断文件夹和文件等操作

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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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+ d  N' s8 ]8 O3 e& Uuc4560 (view source)

' ]0 u+ `+ v( m7 v5 NDefined in: uf_cfi.h


Overview

Checks whether the specified file of the given type exists.
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NOTE: Mixed or upper case file names may not be found if the
environment 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.

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. W5 S* a$ I* s  mReturn

2 l( U3 U% Z: uReturn code:
) w+ Z4 B! y) P& H' {6 T< 0 = Error
) d' |% u' c- s# k. }8 X= 0 = File Exists
: x/ J2 |8 t* l9 C: r! p$ _= 1 = File Does Not Exist

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9 P! U- ^# Q, ^, YInternal and External

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See Also

# S. K. }% O; }' e! K3 \- oFor description of file types see table

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gateway

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# {4 c) t- {' P* Zint uc4560
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const char * fspec,
int ftype
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)
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const char *	fspec	Input	File to check
int	ftype	Input	File type & r7 X8 K. F) l; O: Z0 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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! @9 B7 J9 S2 T, jUF_CFI_ask_file_exist (view source)
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Defined in: uf_cfi.h
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& k, y" m# Z- w( f+ c9 w* [Overview
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Test if a file exists.
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1 u4 d- M! _6 Z" A# F) `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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7 S( Y4 Z# W( e- A% k* b+ sReturn
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0 - No error
Otherwise - Error Code

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Internal and External
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5 D0 ^6 D! x6 j3 {1 ?5 C+ uHistory

3 |6 `# C0 H, NOriginally released in V16.0
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Required License(s)
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int UF_CFI_ask_file_exist
(
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  @4 s" |- _8 K# u+ r' {, ]int * status

)
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const char *	file_spec	Input	The file to check
int *	status	Output	File existence status. ' y% P: J8 {- y5 q0 - file exists 5 @+ a4 F# e3 Q  J' j( F5 G1 - file does not exist * s& C3 x3 v( n, j+ T. @/ G3 g2 O