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1 F8 E/ N/ v: U1 M' a7 s/ 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。
8 d) |8 _1 e& q4 f$ U! ?& P" uUC4560 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。5 m) r2 v+ d2 `+ B; s
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' ]- m2 W, C, M+ `; ruc4560 (view source)" }& c" ^# ~/ r. X7 ?
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Checks whether the specified file of the given type exists.( o8 B- ?& ]2 v5 M% \+ n
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NOTE: Mixed or upper case file names may not be found if the) Y0 z1 p9 R. _; ]" A
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.' u! F, P, ~* `# H* p
To check for a directory the ftype must be set to 100.9 r4 M7 x- [" q5 q
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Return
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Return code: n. @; b- q2 ~" Z) i; j% S0 j
< 0 = Error1 W8 M' {7 @' k3 J
= 0 = File Exists
) V' i# q) q5 X+ M8 q= 1 = File Does Not Exist
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4 c* L, L# n* [Environment
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/ e4 L0 Q& q6 |Internal and External
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See Also
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For description of file types see table: a. n$ u# e* x) c* y# m
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Required License(s)% v& j: S- K/ r# L# ?( V! t1 h) ]
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gateway
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9 O2 q! h* D5 Eint uc4560
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8 h5 ]0 l& F% p. O& V0 Iconst char * fspec,# X0 Q$ y% f. ` P, q' W S7 w& r& V9 U
int ftype; [- h: E( `: i; Y5 G
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| const char * | fspec | Input | File to check | | int | ftype | Input | File type
6 j3 E( H4 A, c+ H4 ?0 will check for files
- Y0 R: y* Z# m) u+ V# F100 will check for directories |
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% Q! R/ h4 Y! \/ w! Q查找文件也可以通过UF_CFI_ask_file_exist# N3 ]0 ]( G3 v
/ F( R7 ]" J( v0 gUF_CFI_ask_file_exist (view source)
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6 q# x8 C0 y7 k" E# ITest if a file exists.( N& S" X k, h1 l# A. Y; Q) t# K
6 y4 B9 w3 q$ t: A4 H& H+ nNote: This function only works with files - not directories. To check if a
9 n- D6 g* c, p& A* Y* ?directory exists use uc4560 and pass a file type of 100.2 d. C+ V3 M% u1 U. |. U
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6 Z0 d+ d' F$ s4 W7 }# cReturn0 @ |1 v" b5 s# g. z
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0 - No error
; G, f9 b+ V& F. u- S, W# _Otherwise - Error Code
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Internal and External
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5 T: V( y4 j s5 L; E/ UHistory
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Originally released in V16.0
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& c3 u6 `5 L# k+ J8 I( qRequired License(s)' r( B* @/ o2 ]! k" \
) E3 k5 \1 S: O/ W; X2 J3 Fgateway
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int UF_CFI_ask_file_exist: Q9 Q B, X5 ]
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int * status
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| const char * | file_spec | Input | The file to check | | int * | status | Output | File existence status.
2 p$ w% Q* j. Y8 A- |0 - file exists
# R, a( J& N/ v) ~% A/ J: p1 - file does not exist
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