使用Ufun的CFI函数直接判断文件夹和文件等操作

admin

) `+ k2 _  z: _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。
3 h  K( r) n. s8 uUC4560 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。

$ a9 F: K" x" r" l5 O4 ?% \


uc4560 (view source)
4 f* I" t; @% |- }" W- N0 t7 R
& o; X) m4 Z% u: D4 n0 kDefined in: uf_cfi.h

5 \  x3 j. h8 `: T
Overview
& q) p$ q2 B2 j
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.
! @8 w8 i" `8 z- l
1 {1 g9 F6 t& v4 y6 kPassing an ftype of 0 will look for a file but does not work for a directory.
+ W6 W5 M6 D. J7 yTo check for a directory the ftype must be set to 100.
" c1 V" h  y! U. t

3 }, F2 P2 u3 z" a% l( E. ZReturn

1 }' l9 ^- g6 V/ A( `Return code:
# o0 _% P( |4 b; N& W< 0 = Error
= 0 = File Exists
/ B: a: p& @- z, R- @# V= 1 = File Does Not Exist


$ t+ T' C3 x. p2 d3 K# d5 _Environment

Internal and External
! s1 w6 F5 s0 P9 l

See Also

For description of file types see table
- j$ Y$ @3 P; P: U! R( `4 ]

Required License(s)
8 V" M4 Y9 q$ R% ]3 X: E( N
gateway

6 o; H# [, a% \. G, P
0 {- I0 i6 h6 t7 D1 |* F& \
( _# Z* h7 R0 N6 J* Aint uc4560
. b4 v/ F. l4 ?(
1 U; `) i. W" c0 b0 O9 Qconst char * fspec,
int ftype

)
: k8 H( ], a7 s/ X; w0 S

const char *	fspec	Input	File to check
int	ftype	Input	File type 0 will check for files 100 will check for directories

6 S$ Y4 ~1 X% B: W+ I. C2 o$ B
查找文件也可以通过UF_CFI_ask_file_exist
8 H& ~8 C7 ^0 e. m: b, i0 G
' b2 E- G7 T3 T8 mUF_CFI_ask_file_exist (view source)
" |- P) O( E3 y, t0 h) o
Defined in: uf_cfi.h
: K3 C# I3 k  k

# ~+ y) y% ~: z7 |+ i1 LOverview

Test if a file exists.
5 L8 [' k- F+ b# p8 C7 V( p
Note: This function only works with files - not directories. To check if a
directory exists use uc4560 and pass a file type of 100.

# {  Q( W" _% @& z; n
3 I. I' i. V5 `5 Y- c& u5 DReturn

& z. U" p% R9 c0 c0 - No error
8 x8 N5 T8 x$ U. s% ~/ k& Z8 iOtherwise - Error Code


Environment
7 I. b4 U: }( H
Internal and External
3 M5 }7 I  x3 N
9 k+ Y0 h% p! m4 n, P) W% }
History
' J- p2 i5 M7 `6 p8 J: a
9 d! O1 I4 u+ e, ~- s6 `Originally released in V16.0
/ J1 ?( a- l6 M: j1 {7 E1 u

Required License(s)
- g8 l6 F4 i$ o7 T2 M' [' i$ ]
. \0 i9 {# ^  \9 F3 Kgateway

& V- q6 @5 p  A6 e. s# y/ i

int UF_CFI_ask_file_exist
; H( {) L6 o0 `" n1 h2 j6 t- T' J. a(
const char * file_spec,
int * status

)
" s+ L- w" g9 u$ Y; i

const char *	file_spec	Input	The file to check
int *	status	Output	File existence status. 0 - file exists 1 - file does not exist 3 d! l* o( l4 A6 o6 c( H# c- v8 | 5 o- l; r9 w" D4 @# C4 d! U

7 C. k: s0 }& A& y