在PowerShell中将秒转换为hh：mm：ss，fff格式

I have a string representing a time in seconds and milliseconds. I want to convert it to a string in the format "hh:mm:ss,fff".

我有一个字符串表示以秒和毫秒为单位的时间。我想将其转换为格式为“hh：mm：ss，fff”的字符串。

My solution still has the flaw that hours less than 10 are shown with one decimal instead of two:

我的解决方案仍有缺陷，小于10的小时数显示为一个小数而不是两个：

PS> $secs = "7000.6789"
PS> $ts =  [timespan]::fromseconds($s)
PS> $res = "$($ts.hours):$($ts.minutes):$($ts.seconds),$($ts.milliseconds)"
PS> $res
PS> 1:56:40,679

What is the right way to achieve this? I'm sure there is a more elegant way with -f and datetime.

实现这一目标的正确方法是什么？我确信-f和datetime有更优雅的方式。

3 个解决方案

#1

In PowerShell 4.0

在PowerShell 4.0中

$s = "7000.6789"
$ts =  [timespan]::fromseconds($s)
("{0:HH\:mm\:ss\,fff}" -f $ts)

Output: 01:56:40,679

输出：01：56：40,679

---

In PowerShell 2.0

在PowerShell 2.0中

$s = "7000.6789"
$ts =  [timespan]::fromseconds($s)
"{0:HH:mm:ss,fff}" -f ([datetime]$ts.Ticks)

Output: 01:56:40,679

输出：01：56：40,679

---

And to go back the other way...

而要回到另一个方向......

$text = "01:56:40,679"
$textReformat = $text -replace ",","."
$seconds = ([TimeSpan]::Parse($textReformat)).TotalSeconds
$seconds

Output: 7000.679

产量：7000.679

#2

You could just use the ToString method on the TimeSpan object and specify the format you want to use. Either use one of the standard timespan formats or use a custom timespan format. For example, the following custom format gives the output you want:

您可以在TimeSpan对象上使用ToString方法并指定要使用的格式。使用标准时间跨度格式之一或使用自定义时间跨度格式。例如，以下自定义格式提供您想要的输出：

$ts =  [timespan]::fromseconds("7000.6789")
$ts.ToString("hh\:mm\:ss\,fff")

This will output

这将输出

01:56:40,679

Update: Updating to provide functions working in PowerShell v2

更新：更新以提供在PowerShell v2中工作的功能

The above solution works well in PowerShell v4, but not in v2 (since the TimeSpan.ToString(string) method wasn't added until .NET Framework 4).

上述解决方案在PowerShell v4中运行良好，但在v2中运行不正确（因为在.NET Framework 4之前未添加TimeSpan.ToString（字符串）方法）。

In v2 I guess you'll have to either create the string manually (like you are doing in the question) or doing an ordinary ToString() and manipulate the string. I suggest the former. Here's a function which works fine for that:

在v2中我想你必须手动创建字符串（就像你在问题中做的那样）或者做一个普通的ToString（）并操纵字符串。我建议前者。这是一个适用于此的功能：

function Format-TimeSpan
{
    PARAM (
        [Parameter(Mandatory = $true, ValueFromPipeline = $true)]
        [TimeSpan]$TimeSpan
    )

    #Current implementation doesn't handle days.

    #By including the delimiters in the formatting string it's easier when we contatenate in the end
    $hours = $TimeSpan.Hours.ToString("00")
    $minutes = $TimeSpan.Minutes.ToString("\:00")
    $seconds = $TimeSpan.Seconds.ToString("\:00")
    $milliseconds = $TimeSpan.Milliseconds.ToString("\,000")

    Write-Output ($hours + $minutes + $seconds + $milliseconds)
}

Testing it using

使用它进行测试

$ts =  [timespan]::fromseconds("7000.6789")

Format-TimeSpan -TimeSpan $ts
$ts | Format-TimeSpan

Yields the following output:

产生以下输出：

01:56:40,679
01:56:40,679

#3

One line conversion :

一线转换：

[timespan]::fromseconds(354801857.86437).tostring()

return 4106.12:04:17.8640000

返回4106.12：04：17.8640000