Use split in as delimiter - powershell-2.0

Question

I have many .txt file in one location. This txt content is as below.
%-ile | Read (ms) | Write (ms) | Total (ms)
----------------------------------------------
min | N/A | 0.018 | 0.018
25th | N/A | 0.055 | 0.055
50th | N/A | 0.059 | 0.059
75th | N/A | 0.062 | 0.062
90th | N/A | 0.070 | 0.070
95th | N/A | 0.073 | 0.073
99th | N/A | 0.094 | 0.094
3-nines | N/A | 0.959 | 0.959
4-nines | N/A | 67.552 | 67.552
5-nines | N/A | 75.349 | 75.349
6-nines | N/A | 84.994 | 84.994
7-nines | N/A | 85.632 | 85.632
I am reading 3-nines from above content and want to write a program like it Total (ms) column's value in greater than 1 with respect to 3-nines row it should print that file name.
For that I have written a program as below:
$data = get-content "*.txt" | Select-String -Pattern "3-nines"
$data | foreach {
$items = $_.split("|")
if ($items[0] -ge 1 ) {Echo $items[1]}
}
But getting below error.
Method invocation failed because [Microsoft.PowerShell.Commands.MatchInfo] doesn't contain a method named 'split'.
At line:2 char:18
+ $items = $_.split <<<< ("|")
+ CategoryInfo : InvalidOperation: (split:String) [], RuntimeException
+ FullyQualifiedErrorId : MethodNotFound
Cannot index into a null array.
At line:3 char:12
+ if ($items[ <<<< 0] -lt 1 ) {Echo $items[1]}
+ CategoryInfo : InvalidOperation: (0:Int32) [], RuntimeException
+ FullyQualifiedErrorId : NullArray
Could you please help here. I am very new to the powershell scripting.

Answer 1

Change
$items = $_.split("|")
to:
$items = ([string]$_).split("|")
The contents of the match is returned as an array and it doesn't have a split method. Casting it to a string will give you the split method.
Update: To print the filename you have to change the script a bit since the current input for Select-String is an array so you loose the filename:
Select-String -Pattern "3-nines" -Path "*.txt" | foreach {
$items = ([string]$_).split("|")
if ([double]$items[3] -ge 1 ) {
Write-Output "FileName: $($_.Filename)"
Echo $items[3]
}
}

Answer 2

First of all - why would you pipe to Select-String here? You can use -Path parameter and pass *.txt directly to it.
The reason split doesn't work is because you should call it agains Line property of [Microsoft.PowerShell.Commands.MatchInfo] object. I guess what you need there is a simple Where-Object:
Select-String -Pattern 3-nines -Path *.txt |
Where-Object { [double]($_.line.Split('|')[-1]) -gt 1 } |
Select-Object Path, Line
Alternatively, you can turn content of the file into objects with Import-Csv cmdlet:
foreach ($file in Get-ChildItem -Path *.txt) {
# Existing headers are terrible - replacing them...
$3nines = Import-Csv -Path $file.FullName -Delimiter '|' -Header Percent, Read, Write, Total |
Where-Object Percent -match 3-nines
if ([double]$3nines.Total -gt 1) {
$3nines | Select-Object *, #{
Name = 'Path'
Expression = { $file.FullName }
}
}
}