用NewLISP查找中文文件名的属性？

Question

下面的NewLISP代码显示了Win32下文件的文件属性。但是，检索到的某些文件名的名称中包含中文字符。当GetFileAttributesA函数遇到它们时，它会为该属性指定一个-1。我查看了fname，但不知道如何使GetFileAttributesW的内容以函数能够识别的形式提供给函数。

如何处理这种情况？(我愿意考虑尝试另一种语言)

(define (get-archive-flag file-name)
    (if (not GetFileAttributesA)
        (begin
        (import "kernel32.DLL" "GetFileAttributesA")
        )
    )
    (setq fname file-name file-attrib (GetFileAttributesA (address fname)))   
    (append fname " " ( string file-attrib))    
)

; walks a disk directory and prints all path-file names
;
(define (show-tree dir)
    (if (directory dir)
        (dolist (nde (directory dir))
            (if (and (directory? (append dir "/" nde))
                (!= nde ".") (!= nde ".."))
                (show-tree (append dir "/" nde))
                (println (get-archive-flag (append dir "/" nde)))
            )
        )
    )
)

(show-tree "z:\\working files\\Cathy")

Answer 1

为了完整起见，这里是在与NewLISP forum上的人员协商后找到的解决方案。

我还没有用更合适的&操作符替换属性位上的bits slice reverse技术。这就留给读者了。

(constant 'SIZEOF_WCHAR 2) ; assumption
(constant 'CP_UTF8 65001)

(define (utf8->16 lpMultiByteStr , cchWideChar lpWideCharStr ret)
    (if (not MultiByteToWideChar)
        (begin
        (import "kernel32.DLL" "MultiByteToWideChar")
        )
    )
    ; calculate the size of buffer (in WCHAR's)
    (setq cchWideChar 
        (
        MultiByteToWideChar
        CP_UTF8 ; from UTF-8
        0       ; no flags necessary
        lpMultiByteStr
        -1      ; convert until NULL is encountered
        0
        0
        )
    )

    ; allocate the buffer
    (setq lpWideCharStr (dup " " (* cchWideChar SIZEOF_WCHAR)))

    ; convert
    (setq ret 
        (
        MultiByteToWideChar
        CP_UTF8 ; from UTF-8
        0       ; no flags necessary
        lpMultiByteStr
        -1      ; convert until NULL is encountered
        lpWideCharStr
        cchWideChar
        )
    )
    (if (> ret 0) lpWideCharStr nil)
)

; resets the Win32 archive flag on a file
; By CaveGuy 2009

(define (get-archive-flag file-name)
    (if (not GetFileAttributesW)
        (begin
        (import "kernel32.DLL" "GetFileAttributesW")
        )
    )
    (setq fname file-name
        file-attrib (GetFileAttributesW (utf8->16 fname))
    )   
    file-attrib   
)

; walks a disk directory and prints all path-file names where archive bit is set
;
(define (show-tree dir)
    (if (directory dir)
        (dolist (nde (directory dir))
            (if (and (directory? (append dir "/" nde)) (!= nde ".") (!= nde "..") )
                (show-tree (append dir "/" nde))
                (if (not (or (= nde ".") (= nde "..")))
                    (begin
                    (setq fname (append dir "/" nde))
                    (setq fflag (get-archive-flag fname))
                    (setq fbits (bits fflag))
                    (if (= (slice (reverse fbits) 5 1) "1") (println fname))
                    )
                )
            )
        )
    )
)

(show-tree "//server/folder")

Answer 2

从2011年7月20日发布的10.3.2版本开始，在读取路径/文件名时，MultiByteToWideChar由newLISP内部处理。

Answer 3

也许您没有使用Newlisp的Unicode版本。无论如何，这里的Newlisper很少。请尝试使用Newlisp forum。