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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。
0 E" m( ~% P; ]) Q% Y7 FUC4560 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。" `# X4 _9 C/ c" J; q: U
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/ ^2 K* A3 ^) J2 ^uc4560 (view source)- t4 G& b I; m* q4 f
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Defined in: uf_cfi.h
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Checks whether the specified file of the given type exists.6 L& Z8 H/ D: ]8 z; t3 y
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NOTE: Mixed or upper case file names may not be found if the
: R% ]* c2 u% p/ Wenvironment variable UGII_OPTION = LOWER is set.% ?( M8 B( h5 T9 t+ T9 c& B5 f
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Passing an ftype of 0 will look for a file but does not work for a directory.
, Y; \6 g+ V/ c' R# Y. [+ ]* y8 oTo check for a directory the ftype must be set to 100.
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! @. k; I2 P \0 d/ I, @Return/ X. N% v6 y7 q' x! t8 |
q$ X- t$ j8 r' aReturn code: v w3 C/ ?7 |
< 0 = Error
5 n/ ~# z7 C# v7 m= 0 = File Exists9 v0 W& z9 z, h+ u& z) D/ E# \
= 1 = File Does Not Exist
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Environment' K4 C: a0 Q# s3 ]4 e$ ?3 o* ]. h
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Internal and External5 W$ `% l' S ]2 I+ Z: Q6 f) U
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See Also
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1 B6 o% i0 M" g; X7 XFor description of file types see table
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Required License(s)$ g# b1 B! l' K" U4 W# }9 y/ ]
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gateway$ |7 `3 j) r# T" D. J, c
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& T3 N7 R) y& N4 Uint uc4560
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) Z9 C+ P5 p. A6 jconst char * fspec,+ I: z" D3 `5 o# [
int ftype* f7 @3 @1 P) i0 U! l3 O: d
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5 Z4 ?6 A: _4 t' |8 e, J! F0 x8 F/ g| const char * | fspec | Input | File to check | | int | ftype | Input | File type
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100 will check for directories |
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3 |* ] `2 \; ]+ c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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; @8 i1 n8 a! n8 h* y: J8 `3 ODefined in: uf_cfi.h
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: `7 S, O u& y+ P9 P- o, a0 u; ^Test if a file exists.
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Note: This function only works with files - not directories. To check if a" u$ Y' f4 k. u$ Q
directory exists use uc4560 and pass a file type of 100.0 Q% i/ O0 N6 @7 b2 S. o3 r& }
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Return
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0 - No error
* ^& G% z5 G. V9 \8 X- t6 TOtherwise - Error Code
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Internal and External6 V. @: W# {& q9 W
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& C: S( s6 V2 O. qOriginally released in V16.0
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Required License(s)
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$ K1 l# k7 u, _; }int UF_CFI_ask_file_exist
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const char * file_spec,: ~2 m( j( C2 [; j1 P8 G! T0 w! K
int * status0 X6 b' b1 _- x; x; o9 U* [
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* F6 X* U+ d7 m# e9 T| const char * | file_spec | Input | The file to check | | int * | status | Output | File existence status.! u& Q o2 [! {. A9 ]% E
0 - file exists7 D& {) m2 B" L7 |( e
1 - file does not exist
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