Powershell 展平文件夹结构并创建索引

有些人喜欢使用长文件夹名和深文件夹结构。当您使用OneDrive/SharePoint Online并与Windows同步长路径时，这尤其令人痛苦

因此，我正在寻找一种缩短这些路径并保留其意义的方法，尤其是在归档文件和文件夹时

基本上是试图转变：

VeryLongPath\AnotherLongFolderPath\AndAnotherOne\VeryLongFilename.xlsx

进入：

并生成以下索引文件：

1 VeryLongPath
    2 AnotherLongFolderPath
        3 AndAnotherOne
            4 VeryLongFilename.xlsx

---

您可以创建一个帮助器类来跟踪各个标签：

class PathLabelIndexer
{
  # This will hold the label translations, [string] -> [int]
  [hashtable]$_terms = @{}

  # This will keep track of how many distinct labels we've encountered
  [int]$_length = 0

  # Transforms a path into index values
  [string] Transform([string]$Path){
    return @($Path.Split('\') |%{
      if($this._terms.ContainsKey($_)){
        # If we already have a translation for $_, use that!
        $this._terms[$_]
      }
      else {
        # No existing translation found, add a new one
        ($this._terms[$_] = $this._length++)
      }
    }) -join '\'
  }

  # Produces the index needed to translate them back to labels
  [string[]] GetIndex(){
    # Since $_length starts at 0, a sorted array of the index values will give us the correct mapping
    return [string[]]@($this._terms.GetEnumerator() |Sort Value |ForEach-Object Key)
  }
}

现在您可以执行以下操作：

PS ~> $indexer = [PathLabelIndexer]::new()
PS ~> $indexer.Transform('VeryLongPath\AnotherLongFolderPath\AndAnotherOne\VeryLongFilename.xlsx')
0\1\2\3

要得到相反的结果，只需生成结果索引并再次查找各个标签：

PS ~> $index = $indexer.GetIndex()
PS ~> $index['0\1\2\3'.Split('\')] -join '\'
VeryLongPath\AnotherLongFolderPath\AndAnotherOne\VeryLongFilename.xlsx

---

您可以创建一个帮助器类来跟踪各个标签：

class PathLabelIndexer
{
  # This will hold the label translations, [string] -> [int]
  [hashtable]$_terms = @{}

  # This will keep track of how many distinct labels we've encountered
  [int]$_length = 0

  # Transforms a path into index values
  [string] Transform([string]$Path){
    return @($Path.Split('\') |%{
      if($this._terms.ContainsKey($_)){
        # If we already have a translation for $_, use that!
        $this._terms[$_]
      }
      else {
        # No existing translation found, add a new one
        ($this._terms[$_] = $this._length++)
      }
    }) -join '\'
  }

  # Produces the index needed to translate them back to labels
  [string[]] GetIndex(){
    # Since $_length starts at 0, a sorted array of the index values will give us the correct mapping
    return [string[]]@($this._terms.GetEnumerator() |Sort Value |ForEach-Object Key)
  }
}

现在您可以执行以下操作：

PS ~> $indexer = [PathLabelIndexer]::new()
PS ~> $indexer.Transform('VeryLongPath\AnotherLongFolderPath\AndAnotherOne\VeryLongFilename.xlsx')
0\1\2\3

要得到相反的结果，只需生成结果索引并再次查找各个标签：

PS ~> $index = $indexer.GetIndex()
PS ~> $index['0\1\2\3'.Split('\')] -join '\'
VeryLongPath\AnotherLongFolderPath\AndAnotherOne\VeryLongFilename.xlsx

---

如果遇到名为

1

或

2

的文件夹或文件，您想做什么？将其视为任何其他文件夹/文件，因此只需相应地重命名它，或保留相同的名称并将其添加到索引中。如果遇到名为

1

或

2

的文件夹或文件，您想做什么？将其视为任何其他文件夹/文件，因此，只需相应地重命名它，或者保留相同的名称并将其添加到索引中。