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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。: c+ T! a, g1 L( c' Y; Z, a( F
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。3 l3 d# m0 P# g6 i
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uc4560 (view source)7 B4 v4 F4 ?7 `* z" I
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Defined in: uf_cfi.h: m: `1 U) r8 x# m0 C
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+ X% @# C9 k) `. D1 ~( n- MChecks whether the specified file of the given type exists.
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: k: O- V3 I5 R/ x3 U v# V8 fNOTE: Mixed or upper case file names may not be found if the
$ L- H1 {2 D4 {environment variable UGII_OPTION = LOWER is set./ M* |# ?4 s ~
: s3 h ]6 e6 f2 z8 m! |Passing an ftype of 0 will look for a file but does not work for a directory.- r5 W8 D7 G% X+ a- k* E
To check for a directory the ftype must be set to 100.
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Return
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! H9 C K( Y2 C8 B; T2 t& HReturn code:" x5 E$ t1 S% |- ~4 I: h$ s
< 0 = Error
& f$ Y; {4 T1 P. P7 i= 0 = File Exists
( v' B" X8 M5 t* U' |= 1 = File Does Not Exist* n7 F2 ?) {, @4 V$ x& \
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b3 t7 s- c, ^" K s2 A+ {Environment
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See Also
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: q' F' s+ A5 J- j9 X* |For description of file types see table+ }+ u: x! h( P w. }! J9 h7 c: R
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Required License(s)$ J! D7 [! C4 z i( T! r" A
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gateway
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) Q1 r9 J1 `; M# M6 |int uc4560
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, \/ j6 a! @) @1 i. ~const char * fspec,
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2 D4 _" y+ \, h, n! l) || const char * | fspec | Input | File to check | | int | ftype | Input | File type
% g: B/ H H3 R' O: f/ r* z0 will check for files
8 r) ~$ Z- _0 b6 B) E% ?; `' m' V100 will check for directories |
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查找文件也可以通过UF_CFI_ask_file_exist& ]. d! B0 a' ^/ s* I. }6 H! x
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UF_CFI_ask_file_exist (view source)
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& j+ S, H! w6 ADefined in: uf_cfi.h
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9 U* U0 \% w" Z9 z4 I: OOverview
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Test if a file exists.( m2 O; A# J. C! q
# L2 B- W8 e; F1 lNote: This function only works with files - not directories. To check if a
' a* V' K" D, P# {2 Cdirectory exists use uc4560 and pass a file type of 100.
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Return
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0 - No error
! F) R$ w6 x4 J$ T+ Q1 V3 COtherwise - Error Code; x! l5 x# Z* v
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History
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- l" p/ Y7 q/ h9 h$ f+ sOriginally released in V16.0
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Required License(s)- c8 ?4 ^+ P( \- O$ c& n3 m
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gateway
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int UF_CFI_ask_file_exist9 n/ p- R' h1 A1 v8 u* h% c0 b7 g
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int * status! O! v2 S8 ~' c
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! G( u9 u9 U0 w3 ^| const char * | file_spec | Input | The file to check | | int * | status | Output | File existence status.
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1 - file does not exist# ]( }' z( C; H
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