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ConvertFrom-Rtf.ps1
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ConvertFrom-Rtf.ps1
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#Requires -Version 3.0
function ConvertFrom-Rtf {
<#
.SYNOPSIS
Converts richtext (rtf) documents to plaintext
.DESCRIPTION
Converts richtext (rtf) documents to plaintext and outputs
text strings or psobjects based on a switch.
.EXAMPLE
Get-ChildItem 'C:\Windows' -Recurse `
-File `
-Filter *.rtf `
-ErrorAction SilentlyContinue |
Select-Object -First 5 |
ConvertFrom-Rtf
Converts first five rtf files in C:\Windows to plaintext
.INPUTS
System.IO.FileInfo
.OUTPUTS
System.Management.Automation.PSCustomObject
.PARAMETER PathToFile
System.IO.FileInfo objects to operate on
.PARAMETER AsObject
Switch to output psobjects instead of strings
.PARAMETER Hash
Switch to hash files or not
.PARAMETER epoch
DateTime of epoch (01/01/1970)
.NOTES
#######################################################################################
Author: @oregon-national-guard/systems-administration
Version: 1.0
#######################################################################################
License: https://github.com/oregon-national-guard/HunterGatherer/blob/master/LICENCE
#######################################################################################
.LINK
https://github.com/oregon-national-guard
.LINK
https://creativecommons.org/publicdomain/zero/1.0/
.LINK
http://blog.kmsigma.com/2014/10/01/converting-rtf-to-txt-via-powershell/
#>
[CmdletBinding()]
param (
[parameter(ValueFromPipeline=$true,ValueFromPipelineByPropertyName=$true)]
[Alias('PSPath','FullName')]
[System.IO.FileInfo[]]
$PathToFile = @((Get-Item 'C:\Windows\Help\en-US\credits.rtf')),
[switch]
$AsObject,
[switch]
$Hash,
[datetime]
$epoch = '01/01/1970'
) #param
begin {
$StartTime = (Get-Date)
$NameOfFunction = 'ConvertFrom-Rtf'
$CountFiles = ($PathToFile | Measure-Object).Count
$ErrorActionPreference = 'Stop'
Add-Type -AssemblyName System.Windows.Forms
#
# Thank @kmsigma for the rtf conversion part.
# I just adapted it for the pipeline and put some
# window dressing on it to fit my use case.
#
} #begin
process {
$PathToFile | ForEach-Object {
$RichTextBox = New-Object -TypeName System.Windows.Forms.RichTextBox
try {
$RichTextBox.Rtf = [System.IO.File]::ReadAllText($_.FullName)
} catch {
Remove-Variable RichTextBox -ErrorAction SilentlyContinue
$ExceptionName = $_.Exception.GetType().FullName
$RichTextBox = New-Object -TypeName psobject -Property @{
"Text" = "#!#!# Failed to convert with a $ExceptionName exception #!#!#"
}
} finally {
if ($AsObject) {
if ($Hash) {
New-Object -TypeName psobject -Property @{
"Name" = $_.Name
"FullName" = $_.FullName
"Text" = $RichTextBox.Text
"LastWriteTime" = $(($_.LastWriteTime) -as [datetime])
"EpochTime" = $(
(New-TimeSpan -Start $epoch -End (
[system.timezoneinfo]::ConvertTime(
($_.LastWriteTime),([system.timezoneinfo]::UTC)
))
).TotalSeconds
)
"TimeStamp" = $((($_.LastWriteTime).GetDateTimeFormats('s')) -as [string])
"Length" = $_.Length
"SHA256" = $((Get-FileHash -Path $_.FullName -Algorithm SHA256).Hash)
} |
Select-Object -Property LastWriteTime,
TimeStamp,
EpochTime,
Name,
FullName,
Length,
SHA256,
Text
Remove-Variable RichTextBox -ErrorAction SilentlyContinue
} elseif (!($Hash)) {
New-Object -TypeName psobject -Property @{
"Name" = $_.Name
"FullName" = $_.FullName
"Text" = $RichTextBox.Text
"LastWriteTime" = $(($_.LastWriteTime) -as [datetime])
"EpochTime" = $(
(New-TimeSpan -Start $epoch -End (
[system.timezoneinfo]::ConvertTime(
($_.LastWriteTime),([system.timezoneinfo]::UTC)
))
).TotalSeconds
)
"TimeStamp" = $((($_.LastWriteTime).GetDateTimeFormats('s')) -as [string])
"Length" = $_.Length
} |
Select-Object -Property LastWriteTime,
TimeStamp,
EpochTime,
Name,
FullName,
Length,
Text
Remove-Variable RichTextBox -ErrorAction SilentlyContinue
} #if ($Hash)
} elseif (!($AsObject)) {
$RichTextBox.Text
Remove-Variable RichTextBox -ErrorAction SilentlyContinue
} # if else (`$AsObject)
} #try catch finally
} #ForEach
} #process
end {
$EndTime = (Get-Date)
Write-Verbose "Finished running $NameOfFunction on $CountFiles files"
Write-Verbose "Elapsed Time: $(($EndTime - $StartTime).TotalSeconds) seconds"
} #end
} #function ConvertFrom-Rtf