使用路径中的特殊字符将批处理文件转换为Powershell [英] Converting batch file to powershell with special characters in path

问题描述

我很难编写一个简单的批处理文件作为powershell脚本.

考虑此文件夹结构.请注意其中带有凉爽的[1]的目录...

> exiftool.exe
是一个命令实用程序，例如(例如)从嵌入式MP3标签提取图片.
如果您需要更多信息，我上载了它的帮助.

oldscript.cmd
exiftool -picture -b input.mp3 > output.jpg
这行是在powershell中编写的.我在作者的论坛帖子中找到了该语法，/p>

• -picture代表要提取的标签，-b代表二进制模式
• input.mp3是我的测试mp3，它的路径中可以包含特殊字符，例如[和]
• > output.jpg定义名称并将结果图像保存在同一文件夹中

newscript.ps1
我目前最好的无效代码是:

$ownpath = Split-Path $MyInvocation.MyCommand.Path
$exe = $ownpath + '\exiftool.exe'
$input = $ownpath + '\input.mp3'
$outimg = $ownpath + '\output.jpg'    

& $exe -picture -binary $input| Set-Content -literalPath $outimg -encoding UTF8

我发现了Set-Content，它能够通过"-literalpath"处理路径中的特殊字符.但是我仍然无法将批处理转换为Powershell脚本，因为 与旧批处理管道(>")相比，Set-Content(以及Out-File方法)的工作方式似乎有所不同.无论使用哪种编码，生成的图像都不可见.上面的帮助文件表示exiftool使用的是UTF8编码.

我当然尝试了其他可用的编码，但是它们都无法生成可见的图像.我被困在这一点上.因此，我的最初问题仍然部分是如何将此批处理文件转换为Powershell".

那为什么在使用旧的批处理命令时它可以正常工作?

例如:创建一个文件夹"D:folder"并将其带有封面图像的MP3文件.
从上方下载 exiftool.exe 并将其放置在此处.

旧的批处理命令将起作用，并为您提供可见的图像

D:\folder\exiftool -picture -binary D:\folder\input.mp3 > D:\folder\output.jpg

具有相同语法的新Powershell V2脚本将失败.为什么?

& D:\folder\exiftool.exe -picture -binary D:\folder\input.mp3 > D:\folder\output.jpg

解决方案

您可以尝试执行此操作，尽管我尚未对其进行测试，因为我没有带有嵌入式图像的mp3:

$file = & "D:\folder\exiftool.exe" -picture -binary "D:\folder\input.mp3"

[io.file]::WriteAllBytes('D:\folder\input[1].jpg',$file)

在Powershell控制台中使用此行可返回可读图像:

 cmd.exe /c "D:\folder\exiftool.exe -picture -binary `"D:\folder\input.mp3`" > image.jpg"

您可以在路径和文件名中使用特殊字符，如下所示:

 $exe = "c:\ps\exiftool.exe"
 $mp3 = "c:\ps\a[1]\input.mp3" 
 $jpg = " c:\ps\a[1]\image[1].jpg"

 cmd.exe /c "$exe -picture -binary $mp3 > $jpg"

路径内有空格:

 $exe = "c:\ps\exiftool.exe"
 $mp3 = "`"c:\ps\a [1]\input.mp3`"" 
 $jpg = "`"c:\ps\a [1]\image [1].jpg`""

 cmd.exe /c "$exe -picture -binary $mp3 > $jpg"

I'm having a hard time to write a simple batch file as powershell script.

Consider this folder structure. Note the directory with the cool [1] in it...

exiftool.exe
Is a command utility to (for example) extract pictures from embedded MP3 tags.
I uploaded its help if you need more info.

oldscript.cmd
exiftool -picture -b input.mp3 > output.jpg
This line is the one to write in powershell. I found the syntax in a forum post from the author

• -picture stands for the tag to extract and -b stands for binary mode
• input.mp3 is my test mp3 which can contain special characters in its path like [ and ]
• > output.jpg defines the name and saves the resulting image in the same folder

newscript.ps1
My best current non-working code is:

$ownpath = Split-Path $MyInvocation.MyCommand.Path
$exe = $ownpath + '\exiftool.exe'
$input = $ownpath + '\input.mp3'
$outimg = $ownpath + '\output.jpg'    

& $exe -picture -binary $input| Set-Content -literalPath $outimg -encoding UTF8

I found Set-Content which is able to handle special characters in pathes through "-literalpath". But I'm still not able to convert the batch to a Powershell script because Set-Content (and Out-File method too) seems work different compared to old batch piping (">"). The resulting image is not viewable regardless which encoding I use. The help file from above says that exiftool is using UTF8 encoding.

Of course I tried other available encodings, but all of them failed to produce a viewable image. I'm stuck at this point. So my initial question still stands partly "How do I convert this batch file to powershell".

So why is it working when using the old batch command?

For example: create a folder "D:folder" and place this MP3 file with a cover image in it.
Download exiftool.exe from above and place it there too.

The old batch command will work and give you a viewable image

D:\folder\exiftool -picture -binary D:\folder\input.mp3 > D:\folder\output.jpg

The new Powershell V2 script with the same syntax will fail. Why?

& D:\folder\exiftool.exe -picture -binary D:\folder\input.mp3 > D:\folder\output.jpg

解决方案

You can try this, though I've not tested it 'cause I've not an mp3 with embedded images:

$file = & "D:\folder\exiftool.exe" -picture -binary "D:\folder\input.mp3"

[io.file]::WriteAllBytes('D:\folder\input[1].jpg',$file)

Edit:

using this line from a powershell console return a readable image:

 cmd.exe /c "D:\folder\exiftool.exe -picture -binary `"D:\folder\input.mp3`" > image.jpg"

You can use special characters in path and in file name as:

 $exe = "c:\ps\exiftool.exe"
 $mp3 = "c:\ps\a[1]\input.mp3" 
 $jpg = " c:\ps\a[1]\image[1].jpg"

 cmd.exe /c "$exe -picture -binary $mp3 > $jpg"

with spaces inside path:

 $exe = "c:\ps\exiftool.exe"
 $mp3 = "`"c:\ps\a [1]\input.mp3`"" 
 $jpg = "`"c:\ps\a [1]\image [1].jpg`""

 cmd.exe /c "$exe -picture -binary $mp3 > $jpg"

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