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& X$ E" C1 {7 w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。
& i+ j- g9 p: sUC4560 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。, l1 X9 W. v) m5 G9 q: i- c2 l
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( `* V5 Y9 V/ B ?4 buc4560 (view source)& D0 f" Q! ?9 b& s
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Defined in: uf_cfi.h2 A3 C: u! W5 g2 h
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Checks whether the specified file of the given type exists.
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NOTE: Mixed or upper case file names may not be found if the6 b: _- m8 v8 V/ B: g& d" E
environment variable UGII_OPTION = LOWER is set.
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Passing an ftype of 0 will look for a file but does not work for a directory./ ^% }4 c0 o8 E {, x- X" Z
To check for a directory the ftype must be set to 100.
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Return
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3 m- r2 B {6 c2 s9 t' `0 d* w: l2 b/ MReturn code:) q. Q3 N( F6 n$ H) f) T9 V {
< 0 = Error
N `2 A' B1 P- P= 0 = File Exists
% t0 ]" d( `. G* p9 E+ n# H= 1 = File Does Not Exist
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Environment
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Internal and External( c# r$ J: ]) O& D
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See Also2 c2 u3 f/ _* @
" ~7 h; u9 Q* s4 wFor description of file types see table" q V; v& x" X2 W8 N2 [4 f
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) r, Q7 G2 L4 Q2 f2 [- M8 DRequired License(s)1 k5 t. [, A% U7 v' g
4 h; F) w: A$ N4 ]) a1 P5 o" cgateway' I K7 A: a8 d& x4 s7 X2 H, B1 e
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int uc4560
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const char * fspec,
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- e* u: w6 R0 N; B* l$ u# M| const char * | fspec | Input | File to check | | int | ftype | Input | File type1 \, Z3 ?* u! N: y* w/ P
0 will check for files8 d* u/ `$ K6 y! G/ @1 i
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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, B7 ]8 q( ~/ K2 O$ G1 q% IUF_CFI_ask_file_exist (view source)
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Defined in: uf_cfi.h" e# r- D) \- U2 e. A
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2 u# j$ d! N! l0 W( |Test if a file exists.7 y" l/ X/ N) e( x+ N% M( s3 u
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Note: This function only works with files - not directories. To check if a8 H5 X9 f) f" |8 M
directory exists use uc4560 and pass a file type of 100.8 q/ a7 P4 _; P& J! o6 k$ x
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Return
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, s. ^( S0 V. k! [& |& p0 m0 - No error
5 {6 m9 V& m- L1 m4 \$ t# i! j' UOtherwise - Error Code& K* q( ~0 X$ p' d5 D- q
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History: G8 C6 \, s n w ?* M
- X$ T4 S; ?. X* o% z3 ^& XOriginally released in V16.0) n1 m# @+ O R8 M* w. }
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Required License(s)% O' p- p$ S7 G/ d. j, ?" M2 e( l% {
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gateway
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, C/ K' @+ B3 I6 u; yint UF_CFI_ask_file_exist& U0 Q5 ^4 u+ T8 o
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- }- s1 @0 I5 O% x Vconst char * file_spec,! a9 q% e3 e, n1 A5 t7 m, X( _& _
int * status
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| const char * | file_spec | Input | The file to check | | int * | status | Output | File existence status." p l$ x; n7 l8 U- \. C" Z4 r$ t& E
0 - file exists, q- }. i2 ^7 H3 M3 v& D
1 - file does not exist
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