<#*,:&cls
@echo off
cd /d "%~dp0"
powershell -C "Set-Location -LiteralPath ([Environment]::CurrentDirectory);. ([ScriptBlock]::Create((Get-Content -LiteralPath \"%~f0\" -ReadCount 0 | Out-String)))"
pause
exit /b
#>
# 替换字符串
$htstr = @{
  'persist'        = 'const'
  'persist="true"' = 'const="true"'
}
# xml路径
$xmlPath = ".\xml\*.xml"
function Get-Encoding {
  [CmdletBinding(DefaultParameterSetName = "PathSet")]
  param (
    [Parameter(ParameterSetName = "StreamSet", Mandatory = $true)]
    [ValidateNotNullOrEmpty()]
    [System.IO.Stream]$Stream,
    [Parameter(ParameterSetName = "PathSet", Mandatory = $true, Position = 0)]
    [ValidateNotNullOrEmpty()]
    [System.String]$Path,
    [Parameter(Mandatory = $false, Position = 1)]
    [System.UInt32]$ReadCount = 1024
  )
  $utf8BOMThrow = New-Object System.Text.UTF8Encoding -ArgumentList @($true, $true)
  $utf8NoBOMThrow = New-Object System.Text.UTF8Encoding -ArgumentList @($false, $true)
  $utf16LEBOMThrow = New-Object System.Text.UnicodeEncoding -ArgumentList @($false, $true, $true)
  $utf16LENoBOMThrow = New-Object System.Text.UnicodeEncoding -ArgumentList @($false, $false, $true)
  $utf16BEBOMThrow = New-Object System.Text.UnicodeEncoding -ArgumentList @($true, $true, $true)
  $utf16BENoBOMThrow = New-Object System.Text.UnicodeEncoding -ArgumentList @($true, $false, $true)
  # type encoding,bool bom,bool throw,Text.Encoding encoding,byte[] preamble,string strPreamble
  $arrUTF8Bom = $utf8BOMThrow.GetPreamble()
  $arrUTF16LEBom = $utf16LEBOMThrow.GetPreamble()
  $arrUTF16BEBom = $utf16BEBOMThrow.GetPreamble()
  
  if ($PSCmdlet.ParameterSetName -eq "PathSet") {
    try {
      $Stream = New-Object System.IO.FileStream -ArgumentList @($Path, [System.IO.FileMode]::Open, [System.IO.FileAccess]::Read, [System.IO.FileShare]::Read)
    } catch {
      return $null 
    }
  }
  $byteBuff = New-Object byte[] -ArgumentList 3
  $readCount = $Stream.Read($byteBuff, 0, 3)
  if ($byteBuff[0] -eq $arrUTF8Bom[0] -and $byteBuff[1] -eq $arrUTF8Bom[1] -and $byteBuff[2] -eq $arrUTF8Bom[2]) {
    # utf8bom
    $return = $utf8BOMThrow
  } elseif ($byteBuff[0] -eq $arrUTF16LEBom[0] -and $byteBuff[1] -eq $arrUTF16LEBom[1]) {
    # utf16lebom
    $return = $utf16LEBOMThrow
  } elseif ($byteBuff[0] -eq $arrUTF16BEBom[0] -and $byteBuff[1] -eq $arrUTF16BEBom[1]) {
    # utf16bebom
    $return = $utf16BEBOMThrow
  } else {
    # nobom
    if ($ReadCount -gt 0) {
      $charBuff = New-Object char[] -ArgumentList $ReadCount
    }
    # utf16-nobom 都被认为是ANSI编码
    foreach ($encoding in @($utf8NoBOMThrow<# , $utf16LENoBOMThrow, $utf16BENoBOMThrow #>)) {
      try {
        $Stream.Position = 0
        $sr = New-Object System.IO.StreamReader -ArgumentList @($Stream, $encoding, $false)
        if ($ReadCount -gt 0) {
          [void]$sr.Read($charBuff, 0, $ReadCount)
        } else {
          [void]$sr.ReadToEnd()
        }
        $return = $encoding
        break
      } catch {
        
      } finally {
        if ($sr) {
          $sr.Dispose()
        }
      }
    }
  }
  if ($PSCmdlet.ParameterSetName -eq "PathSet") {
    $Stream.Dispose()
  }
  if (!$return) {
    $return = [System.Text.Encoding]::Default
  }
  return $return  
}
Get-ChildItem -Path $xmlPath -Filter *.xml -Recurse | ForEach-Object {
  if (-not $_.PSIsContainer) {
    try {
      Write-Host $_.FullName
      $encoding = Get-Encoding -Path $_.FullName
      $txt = [System.IO.File]::ReadAllText($_.FullName, $encoding)
      foreach ($key in $htstr.Keys) {
        $txt = $txt.Replace($key, $htstr[$key])
      }
      [System.IO.File]::WriteAllText($_.FullName, $txt, $encoding)
    } finally {

    }
    trap {}
  }
}
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