PowerShellNotebook

2.5.0

ConvertToPowerShellNoteBook.ps1

function ConvertTo-PowerShellNoteBook {
    <#
        .Example
        ConvertTo-PowerShellNoteBook -InputFileName c:\Temp\demo.txt -OutputNotebookName c:\Temp\demo.ipynb
    #>
    param(
        $InputFileName,
        $OutputNotebookName
    )
    <#################################################################################################
    Parsing section.
    #################################################################################################>
    
    try{$CommentRanges = [System.Management.Automation.PSParser]::Tokenize((Get-Content $InputFileName), [ref]$null).Where({$_.Type -eq 'Comment'}) |
    Select-Object -Property Start, Length, Type, Content }
    Catch{"This is not a valid PowerShell file"}
    
    $s = Get-Content -Raw ( Resolve-Path $InputFileName )
    
    $BlocksWitGaps = @()
    $Previous = $null
    foreach($CommentBlock in $CommentRanges ) {
        $BlockOffsets=[ordered]@{
        Start = $CommentBlock.Start;
        StopOffset = $CommentBlock.Start+$CommentBlock.Length;
        Length = $CommentBlock.Length;
        GapLength = [int] $CommentBlock.Start-$Previous.StopOffset;
        PreviousStart = $Previous.Start;
        PreviousStopOffset = $Previous.StopOffset;
        Type = 'Code';
        GapText = IF($CommentBlock.Start-$Previous.StopOffset -gt 1){[string] $s.Substring($Previous.StopOffset, ($CommentBlock.Start-$Previous.StopOffset)).trimstart()}else {[string] ''};
        Content = $CommentBlock.Content
        }
    
        $Previous=$BlockOffsets
        $BlocksWitGaps+=[pscustomobject] $BlockOffsets
    }
    
    
    $AllBlocks = @()
    $Previous = $null
    $AllBlocks = $CommentRanges
    <# Catch anything missed from the tail of the file, add it to $AllBlocks #>
        if($BlocksWitGaps.Count -eq 1){
            <# This step handles ading the psobjects together if $CommentBlock isn't an array. #>
            $AllBlocks = @($CommentBlock;[pscustomobject][Ordered]@{
            Start = ($CommentBlock.Start+$CommentBlock.Length);
            Length = $s.Length-($CommentBlock.Start+$CommentBlock.Length);
            Type = 'Gap';
            Content = $s.Substring(($CommentBlock.Start+$CommentBlock.Length), ($s.Length-($CommentBlock.Start+$CommentBlock.Length))).trimstart()})
        }
        else {
            if(($CommentBlock.Start+$CommentBlock.Length) -lt $s.Length){
                $AllBlocks+=[pscustomobject][ordered]@{
                Start = ($CommentBlock.Start+$CommentBlock.Length);
                Length = $s.Length-($CommentBlock.Start+$CommentBlock.Length);
                Type = 'Gap';
                Content = $s.Substring(($CommentBlock.Start+$CommentBlock.Length), ($s.Length-($CommentBlock.Start+$CommentBlock.Length))).trimstart()}
            }
        }
    
    foreach($GapBlock in $BlocksWitGaps ) {
        $GapOffsets=[ordered]@{
        Start = $GapBlock.PreviousStopOffset;
        StopOffset = $GapBlock.Start;
        Length = $GapBlock.GapLength;
        Type = 'Gap';
        Content = $GapBlock.GapText.trimstart()
        }
    
        $Previous=$GapOffsets
        $AllBlocks+=if($GapOffsets.Length -gt 0){[pscustomobject] $GapOffsets}
    }
    
    <#################################################################################################
    Notebook creation section.
    #################################################################################################>    
    
    New-PSNotebook -NoteBookName $OutputNotebookName {
    
        foreach($Block in $AllBlocks | Sort-Object Start ) {
    
            
            switch ($Block.Type) {
                'Comment' {$TextBlock = $s.Substring($Block.Start, $Block.Length) -replace ("\n", " `n ")
    
                            if($TextBlock.Trim().length -gt 0){
                                Add-NotebookMarkdown -markdown (-join $TextBlock)
                            }
                        }
                'Gap'   {$GapBlock = $s.Substring($Block.Start, $Block.Length)
    
                            if($GapBlock.Trim().length -gt 0){
                                Add-NotebookCode -code (-join $GapBlock.trimstart().trimend()) -replace ("\n", " `n ")
                            }
                        }
            }
    
        }
    }
}