使用Ufun的CFI函数直接判断文件夹和文件等操作

admin

; y8 S1 k3 r% W! U& m! P: F. g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。


) }+ [0 G# M4 N

uc4560 (view source)
" \; T, [4 A2 q
9 N7 [: [5 R2 ^  F6 x" TDefined in: uf_cfi.h
% Z& Y0 s3 V! W; K/ b9 C
+ T0 s2 v. h! D0 {( N
Overview

8 k, ?# ?+ S7 Q8 X0 d% o. {Checks whether the specified file of the given type exists.
' m( o" v. }, H& A+ \, z  E
4 ~9 J/ ~7 V" l: ^# _( j* m3 wNOTE: Mixed or upper case file names may not be found if the
environment variable UGII_OPTION = LOWER is set.

8 J, [  M8 z3 S0 G- W9 f: i. uPassing an ftype of 0 will look for a file but does not work for a directory.
, k* [( s" G' z6 y1 \* ~9 o* eTo check for a directory the ftype must be set to 100.

* n9 x0 `8 Q2 h3 _. |
$ g% T, m  [. \Return
. ~9 F3 ~3 \: L6 e4 a
Return code:
< 0 = Error
= 0 = File Exists
# Q9 y% `1 ^7 {8 S= 1 = File Does Not Exist
0 q8 i4 I  ?! i* |
& \7 |' A- ]6 D! R5 ^" J; h
4 d. z/ p2 F0 L' P* |Environment

: X. R5 n6 H6 d( xInternal and External
( R% T2 Q5 B) J& u( V- t+ _* c" j
. {# e# `- r2 f1 M
See Also

( P! q7 X6 r: V' pFor description of file types see table

/ b2 T( M/ m( U) P7 W
/ K0 Q3 k: x+ F* v: lRequired License(s)

, L& f6 r' U% V$ fgateway

1 M. y" A6 L4 F* |8 `4 p* y( y
/ o5 t  R6 G, H# z  y, y
int uc4560
(
const char * fspec,
int ftype

)

const char *	fspec	Input	File to check
int	ftype	Input	File type - d. g/ f' B6 m5 M0 will check for files ; w9 g+ M& V2 a! I$ s/ S100 will check for directories

6 l' Q; W: f! f3 K1 a
查找文件也可以通过UF_CFI_ask_file_exist
6 L) h6 F7 A- h7 W- @
3 [. O6 O3 K+ ~  G& V* c* d) SUF_CFI_ask_file_exist (view source)

0 ^; V& t( g( A* F% y; Q# cDefined in: uf_cfi.h

' b$ ?& M  K- Z0 W  _# c% c8 P* A
! \) [5 B/ i3 MOverview

7 K- D3 _( S/ s4 KTest if a file exists.

' r5 x6 W  d3 f9 J" NNote: This function only works with files - not directories. To check if a
( B; v9 Z) u1 @# P1 Kdirectory exists use uc4560 and pass a file type of 100.
9 x) c) ~" ], O+ t
  K" m9 }0 u1 L
- u  V0 }% c1 A- s% R# j) M3 ~- h* r+ lReturn
& {% f% B/ Q, l# }
0 - No error
Otherwise - Error Code
( c% T, l2 [7 F% \9 @: {# ^
  L% f" w  D1 v* Z) r9 v% u2 s
: d# Y7 ^; Z% u5 x# ~  MEnvironment
: j: A9 Z9 S2 b5 h) H
Internal and External


History
& @9 k$ ]" I6 v' C1 z9 p, B
( f, Y) }$ {" w( Q% FOriginally released in V16.0

# r- F6 Y( J' Q( j2 g: w/ S5 T9 p
Required License(s)

gateway
& z) e$ f7 m* i' m4 \' R. i/ L

! `9 \5 q6 b1 t0 G1 X( Z2 E
8 R$ o3 M0 q5 J. aint UF_CFI_ask_file_exist
(
const char * file_spec,
( P, [4 N8 ~* A8 kint * status
6 s5 [! g$ M- o9 h  q. Z$ \
)

const char *	file_spec	Input	The file to check
int *	status	Output	File existence status. 0 - file exists 1 - file does not exist 6 l" C- D! j# d' i% V 5 v1 t  M7 ]& h8 j