String 从PowerShell中的绝对路径获取相对路径 问题
您有一个绝对路径,但希望它相对于另一个路径 例如:String 从PowerShell中的绝对路径获取相对路径 问题,string,powershell,path,relative-path,absolute-path,String,Powershell,Path,Relative Path,Absolute Path,您有一个绝对路径,但希望它相对于另一个路径 例如: P:/SO/data/database.txt --> Now we want the filename to be relative to: P:/SO/team/lists/ ../../data/database.txt 我已经发现堆栈溢出 问题 一个答案链接到一个,但这个答案对我不起作用。使用Set/Get Location的技巧需要路径存在。解决方案 我从PHP中找到了一个答案: 这是我到PowerShell的端口: <
P:/SO/data/database.txt
--> Now we want the filename to be relative to: P:/SO/team/lists/
../../data/database.txt
我已经发现堆栈溢出
问题
一个答案链接到一个,但这个答案对我不起作用。使用Set/Get Location
的技巧需要路径存在。解决方案
我从PHP中找到了一个答案:
这是我到PowerShell的端口:
<# This is probably not the best code I've ever written, but
I think it should be readable for most (advanced) users.
I will wrap this function into a Cmdlet when I have time to do it.
Feel free to edit this answer and improve it!
#>
function getRelativePath([string]$from, [string]$to, [string]$joinSlash='/') {
$from = $from -replace "(\\)", "/";
$to = $to -replace "(\\)", "/";
$fromArr = New-Object System.Collections.ArrayList;
$fromArr.AddRange($from.Split("/"));
$relPath = New-Object System.Collections.ArrayList;
$relPath.AddRange($to.Split("/"));
$toArr = New-Object System.Collections.ArrayList;
$toArr.AddRange($to.Split("/"));
for ($i=0; $i -lt $fromArr.Count; $i++) {
$dir = $fromArr[$i];
# Find first non-matching directory
if ($dir.Equals($toArr[$i])) {
# ignore this directory
$relPath.RemoveAt(0);
}
else {
# Get number of remaining directories to $from
$remaining = $fromArr.Count - $i;
if ($remaining -gt 1) {
# Add traversals up to first matching directory
$padLength = ($relPath.Count + $remaining - 1);
# Emulate array_pad() from PHP
for (; $relPath.Count -ne ($padLength);) {
$relPath.Insert(0, "..");
}
break;
}
else {
$relPath[0] = "./" + $relPath[0];
}
}
}
return $relPath -Join $joinSlash;
}
老实说,我更喜欢这个解决方案:@MikaëlMayer您的链接只包含Bash解决方案,因此它们无法与我的相比。
getRelativePath -From "P:/SO/team/lists/" -To "P:/SO/data/database.txt";
--> ../../data/database.txt
getRelativePath -From "C:/Windows/System32/" -To "C:/Users/ComFreek/Desktop/SO.txt";
--> ../../Users/ComFreek/Desktop/SO.txt