How to extract specific tables from html file using native powershell commands?

Question

I make use of the PAL tool (https://pal.codeplex.com/) to generate HTML reports from perfmon logs within Windows. After PAL processes .blg files from perfmon it dumps the in

Answer 1

I see you accepted an answer but I thought I'd add a RegEx solution in here too. No COM objects needed for this one, and should be PSv2 friendly I'm pretty sure.

$Path = 'C:\Path\To\File.html'
[regex]$regex = "(?s)"
$tables = $regex.matches((GC C:\Temp\test.txt -raw)).groups.value
ForEach($String in $tables){
    $table = $string.split("`n")
    $CurTable = @()
    $CurTableName = ([regex]'TABLE ID="([^"]*)"').matches($table[0]).groups[1].value
    $CurTable += ($table[1] -replace "
",",") -replace ""
    $CurTable += $table[2..($table.count-2)]|ForEach{$_ -replace "
","," -replace ""}
    $CurTable | convertfrom-csv | export-csv "C:\Path\To\Output\$CurTableName.csv" -notype
}


That should output a CSV file for each table found. Such as table6.csv, table9.csv etc. If you wanted to output CSVs per HTML file you could wrap the entire thing in a ForEach loop like:

ForEach($File in (Get-ChildItem "$Path\*.html")){
    Insert above code here
}


You would need to modify the $tables = line so that it was GC $file.fullname to that it would load up each file as it iterated through.

Then just modify the Export-Csv to something like:

$CurTable | convertfrom-csv | export-csv "C:\Path\To\Output\$($File.BaseName)\$CurTableName.csv" -notype


So if you had Server01.html with 3 tables in it you would get a folder named Server01 with 3 CSV files in it, one for each table.
    

             

                                                        
            
            

              
                
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