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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。8 E+ K- T0 S/ o
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。7 f! Z- M2 _$ O! h* W
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uc4560 (view source)
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3 T$ g" g T% I; ^5 S FDefined in: uf_cfi.h% O) [" Z; Y* I; M7 k
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Overview
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0 T0 f6 {6 {3 w! H) wChecks whether the specified file of the given type exists.5 R) N6 q' t6 e& Z1 t, g) O; R
1 y0 |) b3 K. x6 P) L1 p4 N" ZNOTE: Mixed or upper case file names may not be found if the( A- x! b; y+ y# r9 s
environment variable UGII_OPTION = LOWER is set.
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3 ~ @! B( H1 |4 lPassing an ftype of 0 will look for a file but does not work for a directory.4 t) ^* _) a" k: V9 k) `, \
To check for a directory the ftype must be set to 100.- ?% v$ u) I; x! m# g
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Return
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Return code:1 D* w% p' r. G1 t f
< 0 = Error) x0 u- Q& @, a1 Y# s% l" Q G
= 0 = File Exists7 W! Z+ I8 i: ~3 I5 X( _
= 1 = File Does Not Exist1 l3 f' {) T2 M9 n: r1 j* j
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Environment2 ^/ ^+ p1 V3 d1 j, s
% t( w2 O; p) M. b8 m$ ^& W# F/ c1 _Internal and External
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See Also7 ?. ]4 o- P4 ?' J! Y
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For description of file types see table
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/ K6 |& d# k/ z9 u) S$ lRequired License(s)$ V$ P$ T& L, q+ S. N
! r+ n8 Y% Q' Q Igateway
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int uc4560 p6 L# B) w0 O- q$ M
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- T! ~4 ]! y9 H6 q1 ^4 dconst char * fspec,9 }: N* L3 O: X
int ftype+ ~9 D6 `$ M2 D. K
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V4 H4 Q. q) s: }0 Y| const char * | fspec | Input | File to check | | int | ftype | Input | File type, Z' M7 o; d. E" D
0 will check for files: W, V; W7 P2 |. g+ f
100 will check for directories |
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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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' }- u2 \* u. V+ I) tDefined in: uf_cfi.h
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Overview% B' Q- b9 z+ c7 t$ _' I
; A& a4 w2 B: a# JTest if a file exists.( S. M1 u- w$ n- ^
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Note: This function only works with files - not directories. To check if a; v7 k+ N0 X# t8 M: x% U/ I4 E1 g
directory exists use uc4560 and pass a file type of 100.
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8 N, d2 ?% \' M! WReturn
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0 - No error* _2 N2 G3 k w. [
Otherwise - Error Code$ ]6 ]% b3 d2 g. l
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6 o2 s: a. O* S9 x! n1 d! |Environment. T3 o: H& ~# L1 p
3 I ~# V2 s% b Y: M7 P) OInternal and External( |% o! `8 G3 E+ j+ Q3 o' Z. R
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History3 z# J# D% i% P4 q
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Originally released in V16.0
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' j7 y. w+ B+ SRequired License(s)
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gateway
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7 x7 T8 S0 i# d. Vint UF_CFI_ask_file_exist/ C" R9 r+ l3 `: z
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$ n0 a4 {- t! c$ I( H+ Rconst char * file_spec,
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| const char * | file_spec | Input | The file to check | | int * | status | Output | File existence status.: m$ n2 \: v( L3 O
0 - file exists
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