使用Ufun的CFI函数直接判断文件夹和文件等操作
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。
uc4560 (view source)
Defined in: uf_cfi.h
Overview
Checks whether the specified file of the given type exists.
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.
Return
Return code:
< 0 = Error
= 0 = File Exists
= 1 = File Does Not Exist
Environment
Internal and External
See Also
For description of file types see table
Required License(s)
gateway
int uc4560
(
const char * fspec,
int ftype
)
const char *fspecInputFile to check
intftypeInputFile type
0 will check for files
100 will check for directories
查找文件也可以通过UF_CFI_ask_file_exist
UF_CFI_ask_file_exist (view source)
Defined in: uf_cfi.h
Overview
Test if a file exists.
Note: This function only works with files - not directories. To check if a
directory exists use uc4560 and pass a file type of 100.
Return
0 - No error
Otherwise - Error Code
Environment
Internal and External
History
Originally released in V16.0
Required License(s)
gateway
int UF_CFI_ask_file_exist
(
const char * file_spec,
int * status
)
const char *file_specInputThe file to check
int *statusOutputFile existence status.
0 - file exists
1 - file does not exist
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