I need help formatting output with PowerShell's Out-File cmdlet - powershell

Question

I have a series of documents that are going through the following function designed to count word occurrences in each document. This function works fine outputting to the console, but now I want to generate a text file containting the information, but with the file name appended to each word in the list.
My current console output is:
"processing document1 with x unique words occuring as follows"
"word1 12"
"word2 8"
"word3 3"
"word4 4"
"word5 1"
I want a delimited file in this format:
document1;word1;12
document1;word2;8
document1;word3;3
document1;word4;4
document1;word1;1
document2;word1;16
document2;word2;11
document2;word3;9
document2;word4;9
document2;word1;13
While the function below gets me the lists of words and occurences, I'm having a hard time figuring out where or how to insert the filename variable so that it prints at the head of each line. MSDN has been less-than helpful, and most of the places I try to insert the variable result in errors (see below)
function Count-Words ($docs) {
$document = get-content $docs
$document = [string]::join(" ", $document)
$words = $document.split(" `t",[stringsplitoptions]::RemoveEmptyEntries)
$uniq = $words | sort -uniq
$words | % {$wordhash=#{}} {$wordhash[$_] += 1}
Write-Host $docs "contains" $wordhash.psbase.keys.count "unique words distributed as follows."
$frequency = $wordhash.psbase.keys | sort {$wordhash[$_]}
-1..-25 | %{ $frequency[$_]+" "+$wordhash[$frequency[$_]]} | Out-File c:\out-file-test.txt -append
$grouped = $words | group | sort count
Do I need to create a string to pass to the out-file cmdlet? is this just something I've been putting in the wrong place on the last few tries? I'd like to understand WHY it's going in a particular place as well. Right now I'm just guessing, because I know I have no idea where to put the out-file to achieve my selected results.
I've tried formatting my command per powershell help, using -$docs and -FilePath, but each time I add anything to the out-file above that runs successfully, I get the following error:
Out-File : Cannot validate argument on parameter 'Encoding'. The argument "c:\out-file-test.txt" does not bel
ong to the set "unicode,utf7,utf8,utf32,ascii,bigendianunicode,default,oem" specified by the ValidateSet attribute. Sup
ply an argument that is in the set and then try the command again.
At C:\c.ps1:39 char:71
+ -1..-25 | %{ $frequency[$_]+" "+$wordhash[$frequency[$_]]} | Out-File <<<< -$docs -width 1024 c:\users\x46332\co
unt-test.txt -append
+ CategoryInfo : InvalidData: (:) [Out-File], ParameterBindingValidationException
+ FullyQualifiedErrorId : ParameterArgumentValidationError,Microsoft.PowerShell.Commands.OutFileCommand

Answer 1

I rewrote most of your code. You should utilize objects to make it easier formatting the way you want. This one splits on "space" and groups words together. Try this:
Function Count-Words ($paths) {
$output = #()
foreach ($path in $paths) {
$file = Get-ChildItem $path
((Get-Content $file) -join " ").Split(" ", [System.StringSplitOptions]::RemoveEmptyEntries) | Group-Object | Select-Object -Property #{n="FileName";e={$file.BaseName}}, Name, Count | % {
$output += "$($_.FileName);$($_.Name);$($_.Count)"
}
}
$output | Out-File test-out2.txt -Append
}
$filepaths = ".\test.txt", ".\test2.txt"
Count-Words -paths $filepaths
It outputs like you asked(document;word;count). If you want documentname to include extension, change $file.BaseName to $file.Name . Testoutput:
test;11;1
test;9;2
test;13;1
test2;word11;5
test2;word1;4
test2;12;1
test2;word2;2

Answer 2

Slightly different approach:
function Get-WordCounts ($doc)
{
$text_ = [IO.File]::ReadAllText($doc.fullname)
$WordHash = #{}
$text_ -split '\b' -match '\w+'|
foreach {$WordHash[$_]++}
$WordHash.GetEnumerator() |
foreach {
New-Object PSObject -Property #{
Word = $_.Key
Count = $_.Value
}
}
}
$docs = gci c:\testfiles\*.txt |
sort name
&{
foreach ($doc in dir $docs)
{
Get-WordCounts $doc |
sort Count -Descending |
foreach {
(&{$doc.Name;$_.Word;$_.Count}) -join ';'
}
}
} | out-file c:\somedir\wordcounts.txt

Answer 3

Try this:
$docs = #("document1", "document2", ...)
$docs | % {
$doc = $_
Get-Content $doc `
| % { $_.split(" `t",[stringsplitoptions]::RemoveEmptyEntries) } `
| Group-Object `
| select #{n="Document";e={$doc}}, Name, Count
} | Export-CSV output.csv -Delimiter ";" -NoTypeInfo
If you want to make this into a function you could do it like this:
function Count-Words($docs) {
foreach ($doc in $docs) {
Get-Content $doc `
| % { $_.split(" `t",[stringsplitoptions]::RemoveEmptyEntries) } `
| Group-Object `
| select #{n="Document";e={$doc}}, Name, Count
}
}
$files = #("document1", "document2", ...)
Count-Words $files | Export-CSV output.csv -Delimiter ";" -NoTypeInfo