使用Ufun的CFI函数直接判断文件夹和文件等操作

admin

  F2 h' |! I$ z; W! c9 D
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。
, A* s, Z! O( t' A6 E/ U  q6 fUC4560 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。



9 ]1 [# g4 ?$ P5 g0 p
uc4560[size=13.3333px] [size=13.3333px](view source)
[size=13.3333px]
[size=13.3333px]Defined in: uf_cfi.h
6 b9 B: @1 Y  m! f% m
- N7 Q' M, u; {# f9 c
. P/ I6 [* d" Z9 fOverview

5 s( a; o+ j" {7 u5 o) ~3 ^! iChecks whether the specified file of the given type exists.
7 Q# l3 n; G& R* z9 \( G
- n/ a  K1 ~# DNOTE: Mixed or upper case file names may not be found if the
/ Q2 J+ U7 D( W  ^, M4 C. |7 lenvironment variable UGII_OPTION = LOWER is set.

& `" k( r$ ]% @$ U( X, ^4 xPassing an ftype of 0 will look for a file but does not work for a directory.
1 ~& P% S' Q% [To check for a directory the ftype must be set to 100.
# F+ s8 R: ^' [& C% }; I

: O% u3 e* A% w2 S; |Return

Return code:
' Y8 I9 A/ C+ ]) F: [' g7 J" N< 0 = Error
= 0 = File Exists
= 1 = File Does Not Exist

! }; L" ~0 u& |
Environment

Internal and External


) g/ Q/ ^5 j1 L5 b% \See Also

: y: Z4 A; g9 ~% S. lFor description of file types see table
+ w$ A# f+ B2 M; E) m& D) F

% z1 d$ S, M% V; aRequired License(s)
) r, O  \( \8 ~/ m  s
9 ^7 r1 n1 K3 q! Ugateway
- a/ T+ V# p8 K9 d( N0 j, |0 T0 b

8 i' k2 ~4 J: D, ^$ `[size=13.3333px]
int uc4560
(
  |3 B  S; Z/ _3 ]# kconst char * fspec,
int ftype
$ @; J+ a! t5 L
! u/ Z" D* ]: v+ r- g)
! @# S+ l& D6 X
6 ~+ j; l% N' q) g! P3 J

const char *	fspec	Input	File to check
int	ftype	Input	File type 4 K" c' B% A2 w4 ?. G, v0 will check for files 100 will check for directories

3 m8 e' Z; Z  I( |; ^& X
" u2 ?: T0 J, E$ }
查找文件也可以通过[size=18.6667px]UF_CFI_ask_file_exist

UF_CFI_ask_file_exist[size=13.3333px] [size=13.3333px](view source)
[size=13.3333px]
[size=13.3333px]Defined in: uf_cfi.h
8 T+ G' a: K6 \7 @# S: C' H, {3 m

5 j: }6 b& v4 KOverview
& R# @1 O0 W# B( w. P. n. A. x
, n6 x5 X% J! N1 ~% Q% z4 UTest if a file exists.

  e: V* b& ^: B4 Z2 H$ w* vNote: This function only works with files - not directories. To check if a
directory exists use uc4560 and pass a file type of 100.

5 \' w) J* O+ x* g4 p2 t. ^
: r; a0 K% t$ ]3 b% i; sReturn
7 p! X' _5 t) X: M$ B0 |# |- S
( k- c  n3 u% t/ `. ^0 S3 y0 - No error
Otherwise - Error Code
# F6 B( M& w. T+ a2 d  z0 u7 X$ s
8 ~. {$ H  ^( T, ^- D: P  s
6 N- M' q. Y0 M! v2 S- V$ pEnvironment

Internal and External
$ I' m6 Z1 [- o: t: D. H; W- I+ W

History
1 ]* ^6 P6 ^) R6 {3 V
Originally released in V16.0
. i( ~* {: ~' N
7 y! D! Y3 ~) Y' J( ^$ X2 O
Required License(s)
+ n6 Q9 B( @3 t, z" h
gateway

6 b: E' I2 v+ V* i- p8 z# I9 A
[size=13.3333px]
3 T) w$ H1 U% A' n/ n7 Uint UF_CFI_ask_file_exist
(
const char * file_spec,
( Y$ t2 Z( \5 Hint * status
. d: M+ u( j4 m) `6 J: c1 \  _
  d# c) s/ X/ p# _% H+ {* M)
1 H3 l! B7 p/ G5 Y* y3 A3 t

const char *	file_spec	Input	The file to check
int *	status	Output	File existence status. 0 - file exists 1 - file does not exist ' d& ~' w, ]9 Q/ b4 S , w: A( k. Z9 F8 k

" o$ {: i5 r  C* `