100 lines
2.8 KiB
PowerShell
100 lines
2.8 KiB
PowerShell
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Function ConvertTo-Base64String {
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<#
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#>
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[CmdletBinding(DefaultParameterSetName="FromString")]
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param (
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[Parameter(Position=1,ParameterSetName="FromString")]
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[String] $String,
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[Parameter(ParameterSetName="FromFile")]
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[String] $Path,
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[Parameter(ParameterSetName="FromFile")]
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[Int] $ChunkSize = 5KB,
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[Parameter(ParameterSetName="FromFile")]
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[Switch] $OneChunk
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)
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switch($PSCmdlet.ParameterSetName) {
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"FromString" {
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[System.Text.Encoding]::UTF8.GetBytes($String)
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[System.Convert]::ToBase64String($Bytes)
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}
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"FromFile" {
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$FileStream = [IO.File]::Open($Path, [System.IO.FileMode]::Open)
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$BytesToRead = $FileStream.Length
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if ($OneChunk) {
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$ChunkSize = $BytesToRead
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}
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$Bytes = New-Object Byte[] $ChunkSize
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while ($BytesToRead -gt 0) {
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if ($BytesToRead -lt $ChunkSize) {
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$ChunkSize = $BytesToRead
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$Bytes = New-Object Byte[] $ChunkSize
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}
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#Write-Host ("BytesToRead: {0}, ChunkSize: {1}" -f $BytesToRead, $ChunkSize )
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$BytesRead = $FileStream.Read($Bytes, 0, $ChunkSize)
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$BytesToRead -= $BytesRead
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[System.Convert]::ToBase64String($Bytes)
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}
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$FileStream.Close()
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}
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}
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}
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Function ConvertFrom-Base64String {
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<#
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#>
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[CmdletBinding(DefaultParameterSetName="ToByteArray")]
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param (
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[Parameter(Position=1,ValueFromPipeline=$true)]
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[String] $Base64String,
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[Parameter(ParameterSetName="ToFile")]
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[String] $Path,
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[Parameter(ParameterSetName="ToString")]
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[Switch] $ToString
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)
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begin {
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switch($PSCmdlet.ParameterSetName) {
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"ToFile" {
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if ([IO.File]::Exists($Path)) {
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[IO.File]::Delete($Path)
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}
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$FileStream = [IO.File]::Open($Path, [IO.FileMode]::Append)
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}
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}
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}
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process {
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foreach( $Line in ($Base64String -split '\n')) {
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$Bytes = [System.Convert]::FromBase64String($Line)
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switch($PSCmdlet.ParameterSetName) {
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"ToFile" {
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$FileStream.Write($Bytes, 0, $Bytes.Length)
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}
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"ToString" {
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[System.Text.Encoding]::UTF8.GetString($Bytes)
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}
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"ToByteArray" {
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$Bytes
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}
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}
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}
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}
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end {
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switch($PSCmdlet.ParameterSetName) {
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"ToFile" {
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$FileStream.Close()
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}
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}
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}
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}
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