批处理脚本可将所有横向照片移至其自己的子目录中 [英] Batch script to move all landscape oriented photos into their own sub directory

问题描述

假设我有一个包含一堆图像文件的文件夹. JPG，PNG等.我想创建一个批处理脚本，该脚本将:

Suppose I have a folder that contains a bunch of image files. JPG, PNG, etc. I want to create a batch script that will:

1)遍历每个文件
2)对于每个文件，检查图像宽度是否大于图像高度
3)如果为true，请移至名为landscape的子目录.

1) loop through each file
2) for each file, check if the image width is greater than the image height
3) if true, move into a sub-directory named landscape.

我知道如何做#1和#3，但是迷路于#2.

I know how to do #1 and #3, but am lost on how to go about #2.

推荐答案

您可以使用.NET方法获取图像尺寸.然后，您无需依赖任何第三方工具或库.这是一个使用PowerShell混合代码来调用 [System.Drawing.Image]::FromFile() 来构建

You could use a .NET method to get the image dimensions. Then you wouldn't need to rely on any 3rd party tools or libraries. Here's an example that uses PowerShell hybrid code to invoke [System.Drawing.Image]::FromFile() to construct a System.Drawing.Image object and access its dimensions. Save it with a .bat extension and see what you think.

<# : Batch portion (PowerShell multi-line comment)
@echo off & setlocal

rem # move landscape pics to what directory?
2>NUL md landscape

for %%I in (*.jpg *.bmp *.gif *.png) do (
    call :isLandscape "%%~fI" && (
        rem # remove "echo" when satisfied that this works as desired
        echo move "%%~fI" landscape\
    ) || (
        echo %%~fI was portrait
    )
)

goto :EOF

:isLandscape <imgfile>
rem # function sets errorlevel 0 if landscape, 1 if portrait or square
setlocal disabledelayedexpansion
set "img=%~1"
powershell -noprofile -noninteractive "iex (${%~f0} | out-string)"
endlocal & exit /b %errorlevel%

: end batch / begin PowerShell hybrid code #>

add-type -Assembly System.Windows.Forms
$size = [Drawing.Image]::FromFile((gi $env:img)).Size
exit ($size.Width -le $size.Height) # 0 = false, 1 = true

---

实际上，如果您不愿意进一步处理批处理上下文中的文件，则在单个PowerShell会话中循环浏览文件会更快.使用.bat或.ps1扩展名保存此文件，您将看到区别.

---

Actually, if you aren't that attached to further processing of the files within the batch context, it'll be much faster to loop through the files within a single PowerShell session. Save this with either a .bat or a .ps1 extension and you'll see the difference.

<# : batch portion
@echo off & setlocal

powershell -noprofile -noninteractive "iex (${%~f0} | out-string)"
goto :EOF

: end batch / begin PowerShell #>

add-type -Assembly System.Windows.Forms
$newdir = "landscape"

if (-not (test-path $newdir)) { md $newdir }

gci | ?{ $_.Name -match "\.(jpe?g|bmp|gif|png)$" } | %{

    $size = [Drawing.Image]::FromFile($_).Size
    if ($size.Width -gt $size.Height) {
        # remove the -whatif flag to enable moves
        mv $_.FullName $newdir -whatif
    } else {
        write-host ("{0} was portrait.  Not moving." -f $_.FullName) -f cyan
    }
}

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