通过添加增量编号来创建唯一的文件名 [英] Create unique filename by adding incremental number

问题描述

如果存在以前编号的文件，我正在尝试增加文件名.

I'm trying to increment file names if a previously numbered one exists.

例如，它应该检查"Example.csv"是否存在.如果是这样，则新文件应命名为"Example2.csv"，然后命名为"Example3.csv"，"Example4.csv"，依此类推.到目前为止，这是我的代码:

For example, it should check if "Example.csv" exists. If so, the new file should be called "Example2.csv", then "Example3.csv", "Example4.csv" and so on. Here's my code so far:

$fileNum = 2
; The $month variable is defined earler in the script but I'll define another var for this example
$month = "January"
If FileExists("Emissions Log - " & $month & ".csv") Then
    If FileExists("Emissions Log - " & $month & $fileNum & ".csv") Then
        $fileNum += 1
        $file = FileOpen("Emissions Log - " & $month & $fileNum & ".csv", 1)
    Else
        $file = FileOpen("Emissions Log - " & $month & $fileNum & ".csv", 1)
    EndIf
Else
    $file = FileOpen("Emissions Log - " & $month & ".csv", 1)
EndIf

推荐答案

为此，必须循环使用文件名.

In order to do that, you must loop the filenames.

$month = "January"

For $i = 0 To 1000 ;max file versions is set to 1000

    If $i = 0 Then
        $num = ''
    Else
        $num = $i
    EndIf

    If Not FileExists("Emissions Log - " & $month & $num & ".csv") then
        $file = FileOpen("Emissions Log - " & $month & $num & ".csv", 1)
        ExitLoop
    EndIf
Next

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