Fix File Name - Powershell Script

<#
.SYNOPSIS
    Defines a function to remove 'invalid' characters
    from a file name
.DESCRIPTION
    Some programs do not like certain 'invalid' characters
    in a file name used by that application. The function
    takes a look at each the file name and replaces some invalid
    characters with '-'.

    This function takes a file name and 'fixes' it and returns
    the 'fixed' file name. Needless to say the characters to match
    and what to replace them with is an application specific decision!
.NOTES
    Requires   : PowerShell Version 3.0
.EXAMPLE
    Psh> .\Fix-FileName.ps1
    File name was: 123{}{{{|[\]
    Fixed name is: 123--------
#>


Function Fix-FileName {
[CMdletbinding()]
Param (
$fn = $(throw 'no file name specified - returning')
)

Switch -Regex ($fn) {
  "}"  { $fn = $fn -replace '{','-'  }
  "}"  { $fn = $fn -replace '}','-'  }
  "\]" { $fn = $fn -replace ']','-'  }
  "\[" { $fn = $fn -replace '\[','-' }
  "\\" { $fn = $fn -replace '\\','-' }
  "\|" { $fn = $fn -replace '\|','-' }
}
$fn
}

$fn = "123{}{{{|[\]"
$fnf = Fix-FileName $fn
"File name was: $fn"
"Fixed name is: $fnf"


Reference - pshscripts.blogspot.com