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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7 i# T1 v* X0 _3 T# nuc4560 (view source)

Defined in: uf_cfi.h


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) L4 f* ^: C( k' D) p" f5 LChecks 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.
+ J! H9 W" P8 dTo check for a directory the ftype must be set to 100.

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2 j! p& P4 d' K; i5 \8 G& K5 XReturn
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Return code:
1 @; I# E/ J5 H< 0 = Error
1 @: M7 X4 ?3 S) G5 {. R= 0 = File Exists
= 1 = File Does Not Exist


Environment

Internal and External
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, Q& o8 l/ p6 P4 U! L9 s; iSee Also
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# D# E1 J3 N" {For description of file types see table
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int uc4560
(
const char * fspec,
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)
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const char *	fspec	Input	File to check
int	ftype	Input	File type # P9 i, U/ Y  T8 H( H( G3 n# w9 g0 will check for files 1 Z1 J2 ?: o* l8 I$ }1 H- E' x7 @100 will check for directories

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" ~9 S1 E1 `% t2 N' {0 H& g查找文件也可以通过UF_CFI_ask_file_exist
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UF_CFI_ask_file_exist (view source)
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Defined in: uf_cfi.h
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Test if a file exists.
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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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Return

0 - No error
. r( N! B- L$ W0 KOtherwise - Error Code
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Environment
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Internal and External


History
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Originally released in V16.0
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gateway


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5 [) B; u1 @2 n  t/ k+ Z) Qint 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. ( b8 ]+ ^$ Z# U& P0 - file exists 1 - file does not exist