Function PS_GetFileHashes(aFiles As Variant, sHashAlgorithm As String) As Scripting.Dictionary
    Dim retVal As New Scripting.Dictionary
    Dim LenCmd As Long, aIdx As Long
    Dim sPSCmd As String, itm As Variant, sPathsPart As String, aOutput As Variant, itmParts As Variant
    
    On Error GoTo Error_Handler
    If AlgorithimIsUnknown(sHashAlgorithm) Then GoTo Error_Handler
    
    Dim PScmd As New PS_FileHashesCommand
    LenCmd = PScmd.LenCmdWithoutPaths(sHashAlgorithm)
    aIdx = LBound(aFiles)
    Do While aIdx <= UBound(aFiles)
        sPathsPart = GetCmdFilesArgument(aIdx, aFiles, LenCmd)
        sPSCmd = PScmd.BuildFileHashesCommand(sPathsPart, sHashAlgorithm)
        aOutput = Split(CStr(PS_GetOutput(sPSCmd)), vbCrLf)
        ' Add the output for filenames / hashes to the dictionary to return
        For Each itm In aOutput
            itmParts = Split(itm, "|")
            If UBound(itmParts) > 0 Then retVal.Add itmParts(0), itmParts(1)
        Next itm
    Loop
    Set PS_GetFileHashes = retVal

Error_Handler_Exit:
    On Error Resume Next
    Exit Function
'Get-ChildItem -Path '.\*.xls','.\*.csv' -Recurse -File | Get-FileHash -Algorithm SHA256
Error_Handler:
    MsgBox "The following error has occured" & vbCrLf & vbCrLf & _
           "Error Number: " & Err.Number & vbCrLf & _
           "Error Source: PS_GetFileHash" & vbCrLf & _
           "Error Description: " & Err.Description & _
           Switch(Erl = 0, "", Erl <> 0, vbCrLf & "Line No: " & Erl) _
           , vbOKOnly + vbCritical, "An Error has Occured!"
           'Resume Next
    Resume Error_Handler_Exit
End Function

Private Function AlgorithimIsUnknown(sHashAlgorithm As String) As Boolean
    Dim retVal As Boolean: retVal = False
    Select Case sHashAlgorithm
        Case "MACTripleDES", "MD5", "RIPEMD160", "SHA1", "SHA256", "SHA384", "SHA512"
        Case Else
            MsgBox "Unknown Algorithm", vbCritical Or vbOKOnly, "Operation Aborted"
            retVal = True
    End Select
    AlgorithimIsUnknown = retVal
End Function

Private Function GetNextStringSegment(ByRef aIdx As Long, ByRef aFiles As Variant, LenCmd As Long) As String
    Dim sPathsPart As String: sPathsPart = ""
    Dim sPreviousPart As String
    
    Do
        sPreviousPart = sPathsPart
        sPathsPart = sPathsPart & HALutil.WrapText(aFiles(aIdx), "'") & ","
        aIdx = aIdx + 1
        If aIdx >= UBound(aFiles) Then Exit Do
    Loop Until Len(sPathsPart) - 1 + LenCmd > 32656
    
    ' We left because either we reached the end of the array or we exceeded the limit.
    ' If we exceeded the limit then we need to back one element off of sPathsPart and the aIdx
    If Len(sPathsPart) - 1 + LenCmd > 32656 Then
        aIdx = aIdx - 1
        sPathsPart = sPreviousPart
    End If
    'Remove the comma from the end if there, if empty, use *.*
    If Len(sPathsPart) > 0 Then sPathsPart = Left(sPathsPart, Len(sPathsPart) - 1) Else sPathsPart = "'*.*'"
    GetNextStringSegment = sPathsPart
End Function

' Class PS_FileHashesCommand
Option Compare Database
Option Explicit

Const PS_Cmd_Beg As String = "Get-ChildItem -Path "
Const PS_Cmd_Mid As String = " -File | Get-FileHash -Algorithm "
Const PS_Cmd_End As String = " | ForEach { $_.Path + '|' + $_.Hash }"

Public Function BuildFileHashesCommand(sPathsPart As String, sHashAlgorithm As String) As String
    Dim retVal As String: retVal = ""
    retVal = PS_Cmd_Beg & sPathsPart & PS_Cmd_Mid & sHashAlgorithm & PS_Cmd_End
    
    BuildFileHashesCommand = retVal
End Function

Public Function LenCmdWithoutPaths(sHashAlgorithm) As Long
    Dim retVal As Long: retVal = 0
    retVal = Len(PS_Cmd_Beg & PS_Cmd_Mid & sHashAlgorithm & PS_Cmd_End)
    LenCmdWithoutPaths = retVal
End Function

Function PS_GetFileHashes(aFiles As Variant, sHashAlgorithm As String) As Scripting.Dictionary
    '...
    Do While aIdx <= UBound(aFiles)
        sPathsPart = GetNextStringSegment(aIdx, aFiles, LenCmd)
        ' Getting rid of this comment: Build the PowerShell command string
        sPSCmd = PScmd.BuildFileHashesCommand(sPathsPart, sHashAlgorithm)
        aOutput = Split(CStr(PS_GetOutput(sPSCmd)), vbCrLf)
        ' Going to refactor: Add the output for filenames / hashes to the dictionary to return
        For Each itm In aOutput
            itmParts = Split(itm, "|")
            If UBound(itmParts) > 0 Then retVal.Add itmParts(0), itmParts(1)
        Next itm
    Loop
    '...
End Function

Function PS_GetFileHashes(aFiles As Variant, sHashAlgorithm As String) As Scripting.Dictionary
    '...
    Do While aIdx <= UBound(aFiles)
        sPathsPart = GetNextStringSegment(aIdx, aFiles, LenCmd)
        sPSCmd = PScmd.BuildFileHashesCommand(sPathsPart, sHashAlgorithm)
        aOutput = PScmd.RunCmdAndReturnOutputAsArray(sPSCmd)
        ' Going to refactor: Add the output for filenames / hashes to the dictionary to return
        For Each itm In aOutput
            itmParts = Split(itm, "|")
            If UBound(itmParts) > 0 Then retVal.Add itmParts(0), itmParts(1)
        Next itm
    Loop
    '...
End Function

Function PS_GetFileHashes(aFiles As Variant, sHashAlgorithm As String) As Scripting.Dictionary
    '...
    Do While aIdx <= UBound(aFiles)
        sPathsPart = GetNextStringSegment(aIdx, aFiles, LenCmd)
        sPSCmd = PScmd.BuildFileHashesCommand(sPathsPart, sHashAlgorithm)
        PScmd.RunCmdAndAddOutputToDictionary sPSCmd, retVal
    Loop
    '...
End Function