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powershell parse

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Last Modified: 2015-01-03
Hello,
Finally I was able to complete a Powershell parse. But my code is very elementary. Code below Works, my goal is to learn more Powershell. Can anyone write this differently where the index array starting point may changes a little bit and the code still wont break. My concern is that this may be to specific for this page and my be prone to break easily if string changes by 1 space. (I do understand that if there are major code changes to website this wont work anyway.)


Add-Type -path C:\PStemp\HtmlAgilityPack\Net40\htmlagilitypack.dll
CLS

	$Website = "http://scores.espn.go.com/mlb/scoreboard?date=20140415"
	$wc = New-Object System.Net.WebClient;
	$doc = New-Object HtmlAgilityPack.HtmlDocument
	$doc.LoadHtml($wc.DownloadString($Website))

	$game = $doc.DocumentNode.SelectNodes('.//table["league-title"]')

	ForEach ($innerHTML in $game.InnerHTML){
	
	$Teams = $innerHTML -split "`"><a href=`""
	
	$Team1 = $Teams[1].Substring($Teams[1].IndexOf("http://espn.go.com") + 38, $Teams[1].IndexOf("</a>") - $Teams[1].IndexOf("http://espn.go.com") - 42).Replace("/", "").Replace("`"", "")
	$Team2 = $Teams[2].Substring($Teams[2].IndexOf("http://espn.go.com") + 38, $Teams[2].IndexOf("</a>") - $Teams[2].IndexOf("http://espn.go.com") - 42).Replace("/", "").Replace("`"", "")
	
	$Team1 = $Team1.toCharArray()
	[Array]::Reverse($Team1)
	$Team1 = -join $Team1
	
	$Team2 = $Team2.toCharArray()
	[Array]::Reverse($Team2)
	$Team2 = -join $Team2
	
	
	$Team1 = $Team1.Substring(0,$Team1.IndexOf("-")).ToUpper()
	$Team2 = $Team2.Substring(0, $Team2.IndexOf("-")).ToUpper()
	
	$Team1 = $Team1.toCharArray()
	[Array]::Reverse($Team1)
	$Team1 = -join $Team1
	
	$Team2 = $Team2.toCharArray()
	[Array]::Reverse($Team2)
	$Team2 = -join $Team2

			
	$Score1 = $Teams[1].Substring($Teams[1].IndexOf("-alsT`">") + 7, 2).Replace("<","").Replace("/", "-1")
	$Score2 = $Teams[2].Substring($Teams[2].IndexOf("-hlsT`">") + 7, 2).Replace("<", "").Replace("/", "-1")
	
	Write-Host $Team1 $Score1', '$Team2 $Score2
	
}

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David Johnson, CDSimple Geek from the '70s
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Distinguished Expert 2019

Commented:
which version of the htmlagilitypack are you using..
New-Object : Cannot find type [HtmlAgilityPack.HtmlDocument]: verify that the
assembly containing this type is loaded.
At line:5 char:9
+     $doc = New-Object HtmlAgilityPack.HtmlDocument
+            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidType: (:) [New-Object], PSArgumentExcepti
   on
    + FullyQualifiedErrorId : TypeNotFound,Microsoft.PowerShell.Commands.NewOb
   jectCommand
Leo TorresSQL Developer
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Author

Commented:
Leo TorresSQL Developer
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Author

Commented:
Neglected? Why Moderator?
Hi leo


I use  split to divide up the text  as the basic html does not usually change that often

Here is an example

$Website = "http://scores.espn.go.com/nhl/scoreboard?date=20141125"
$Request = Invoke-WebRequest -URI $webSite
$h = $request.ParsedHtml.getElementsByTagName("div")
$h | where classname -eq 'team-name' | select InnerText
$a = $h | where classname -eq 'span-2' | select innerhtml
$teama = ($a.innerHTML -split "</A>")[0].split(">")[11]
$scorea =  ($a.innerHTML -split "</A>")[1].split("<")[4].split(">")[1]
$teamb = (($a.innerHTML -split "</A>")[1] -split ">")[17]
$scoreb = ($a.innerHTML -split "</A>")[2].split(">")[4].split("<")

write-output $teama , $scorea , $teamb , $scoreb

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Let me know if you require a specific example or further help.

Joe
Qlemo"Batchelor", Developer and EE Topic Advisor
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Top Expert 2015

Commented:
Oh, that rings a bell. August 2013, College Football results, then NFL results ... A pity each league has a different page layout on ESPN, and it is never as straightforward as it should.
Qlemo"Batchelor", Developer and EE Topic Advisor
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Top Expert 2015

Commented:
As it seems, one of the reliable ways is to get each game's HTML ID, extract the unique ID number (e.g. 340415104), and use that in an XPath like //*[@id="340415104-aTeamName"]/a (for "away" team name).
Leo TorresSQL Developer
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Author

Commented:
Qlemo: as a programmer I realized this page matches teams to an ID at the beginning then references those IDs to represent team. So your suggestion crossed my mind but I had no idea how to do it. Remember I need to get results for day passed.

Thanks again for your help on this.
Hi Leo

is this similar to the other ticket you raised ?    would you like some further help ?

Regards
Joe
"Batchelor", Developer and EE Topic Advisor
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Top Expert 2015
Commented:
This one is on us!
(Get your first solution completely free - no credit card required)
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Leo TorresSQL Developer
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Author

Commented:
Sorry Qlemo.. been in vacation mode for past few weeks.

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