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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uc4560 (view source)

Defined in: uf_cfi.h

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Overview

Checks whether the specified file of the given type exists.

  `9 N* a/ k% t$ JNOTE: Mixed or upper case file names may not be found if the
environment variable UGII_OPTION = LOWER is set.
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Passing an ftype of 0 will look for a file but does not work for a directory.
: @. z7 h2 A8 r; g' K& r, E. ZTo check for a directory the ftype must be set to 100.

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# c. P3 [0 k& y2 C5 G' mReturn code:
' B, O( A4 M& I' |< 0 = Error
= 0 = File Exists
= 1 = File Does Not Exist

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Environment

Internal and External

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; a3 q0 D4 m  u& e& rFor description of file types see table
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Required License(s)

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int uc4560
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const char * fspec,
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)

const char *	fspec	Input	File to check
int	ftype	Input	File type 0 s& v% P2 o7 v% c" `0 will check for files 1 g$ k* h7 `: T100 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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; a. G4 `! a$ q( KUF_CFI_ask_file_exist (view source)
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Defined in: uf_cfi.h


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; R, Y* k. i2 D' RTest if a file exists.
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Note: This function only works with files - not directories. To check if a
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0 - No error
3 \5 x. D/ }! R9 H" z- m$ B. @Otherwise - Error Code
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Environment

Internal and External
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History

Originally released in V16.0
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Required License(s)

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int 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. 0 - file exists 1 - file does not exist 5 U; e$ Z9 ^4 G