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December 2, 2017 22:54
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PowerShell cmdlet for converting *.eml files to html
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| ## | |
| ## Source: https://chris.dziemborowicz.com/blog/2013/05/11/how-to-convert-eml-files-to-html-using-powershell/ | |
| ## | |
| ## Usage: ConvertFrom-EmlToHtml | |
| ## | |
| function ConvertFrom-EmlToHtml | |
| { | |
| [CmdletBinding()] | |
| Param | |
| ( | |
| [Parameter(ParameterSetName="Path", Position=0, Mandatory=$True)] | |
| [String]$Path, | |
| [Parameter(ParameterSetName="LiteralPath", Mandatory=$True)] | |
| [String]$LiteralPath, | |
| [Parameter(ParameterSetName="FileInfo", Mandatory=$True, ValueFromPipeline=$True)] | |
| [System.IO.FileInfo]$Item | |
| ) | |
| Process | |
| { | |
| switch ($PSCmdlet.ParameterSetName) | |
| { | |
| "Path" { $files = Get-ChildItem -Path $Path } | |
| "LiteralPath" { $files = Get-ChildItem -LiteralPath $LiteralPath } | |
| "FileInfo" { $files = $Item } | |
| } | |
| $files | % { | |
| # Work out file names | |
| $emlFn = $_.FullName | |
| $htmlFn = $emlFn -replace '\.eml$', '.html' | |
| # Skip non-.msg files | |
| if ($emlFn -notlike "*.eml") { | |
| Write-Verbose "Skipping $_ (not an .eml file)..." | |
| return | |
| } | |
| # Do not try to overwrite existing files | |
| if (Test-Path -LiteralPath $htmlFn) { | |
| Write-Verbose "Skipping $_ (.html already exists)..." | |
| return | |
| } | |
| # Read EML | |
| Write-Verbose "Reading $_..." | |
| $adoDbStream = New-Object -ComObject ADODB.Stream | |
| $adoDbStream.Open() | |
| $adoDbStream.LoadFromFile($emlFn) | |
| $cdoMessage = New-Object -ComObject CDO.Message | |
| $cdoMessage.DataSource.OpenObject($adoDbStream, "_Stream") | |
| # Generate HTML | |
| Write-Verbose "Generating HTML..." | |
| $html = "<!DOCTYPE html>`r`n" | |
| $html += "<html>`r`n" | |
| $html += "<head>`r`n" | |
| $html += "<meta charset=`"utf-8`">`r`n" | |
| $html += "<title>" + $cdoMessage.Subject + "</title>`r`n" | |
| $html += "</head>`r`n" | |
| $html += "<body style=`"font-family: sans-serif; font-size: 11pt`">`r`n" | |
| $html += "<div style=`"margin-bottom: 1em;`">`r`n" | |
| $html += "<strong>From: </strong>" + $cdoMessage.From + "<br>`r`n" | |
| $html += "<strong>Sent: </strong>" + $cdoMessage.SentOn + "<br>`r`n" | |
| $html += "<strong>To: </strong>" + $cdoMessage.To + "<br>`r`n" | |
| if ($cdoMessage.CC -ne "") { | |
| $html += "<strong>Cc: </strong>" + $cdoMessage.CC + "<br>`r`n" | |
| } | |
| if ($cdoMessage.BCC -ne "") { | |
| $html += "<strong>Bcc: </strong>" + $cdoMessage.BCC + "<br>`r`n" | |
| } | |
| $html += "<strong>Subject: </strong>" + $cdoMessage.Subject + "<br>`r`n" | |
| $html += "</div>`r`n" | |
| if ($cdoMessage.HTMLBody -ne "") { | |
| $html += "<div>`r`n" | |
| $html += $cdoMessage.HTMLBody + "`r`n" | |
| $html += "</div>`r`n" | |
| } else { | |
| $html += "<div><pre>" | |
| $html += $cdoMessage.TextBody | |
| $html += "</pre></div>`r`n" | |
| } | |
| $html += "</body>`r`n" | |
| $html += "</html>`r`n" | |
| # Write HTML | |
| Write-Verbose "Saving HTML..." | |
| Add-Content -LiteralPath $htmlFn $html | |
| # Output to pipeline | |
| Get-ChildItem -LiteralPath $htmlFn | |
| } | |
| } | |
| End | |
| { | |
| Write-Verbose "Done." | |
| } | |
| } |
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