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Need to clean up this html. Regex needed... urgent

Posted on 2004-04-23
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442 Views
Last Modified: 2012-06-27
Hi All,

I am in an extreme need to solve this. I know it's not defficult, but I never worked with regex.

In a simple version of html below, I need to get rid of all <sctipt>tags</script>, all <meta> tags. I need to leave this javascript function though:
<script language="javascript" type="text/javascript">
<!--
function OnLoadReport()
{
var pageHits = null;
var rep = new Report(1, 4, pageHits, false, docMapIds);
if (parent != self) parent.OnLoadReport(rep);
}
//-->
</script>

Note that the arguments can be different of the function Report(). Here is what I have so far...(a)
      public string removeJavaCode(string oldStr) {

                string pattern = @"<script[^>]*>.*?</script[^>]*>";
                string newStr  = Regex.Replace(oldStr,pattern,"");
                return oldStr;//newStr;
      }      

This, if I pass in string.Replace("\n","") removes all javascript. I need to leave that piece though.

Thanks for any help.

Puero

/////////////////////////////////////////////////
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>
</title>
<META http-equiv="Content-Type" content="text/html; charset=utf-8">
<META http-equiv="Content-Style-Type" content="text/css">
<META http-equiv="Content-Script-Type" content="text/javascript">


<style type="text/css">//here being a stylesheet</style>

<script language="javascript" type="text/javascript">
<!--
//-->
</script><script language="javascript" type="text/javascript" src="?rs:Command=Get&amp;rc:GetImage=8.00.743.00Report.js">

</script><script language="javascript" type="text/javascript">
<!--
function OnLoadReport()
{
var pageHits = null;
var rep = new Report(1, 4, pageHits, false, docMapIds);
if (parent != self) parent.OnLoadReport(rep);
}
//-->
</script>

<script language="javascript" type="text/javascript" src="ReportViewer.js"></script></head>
<body onload="javascript:OnLoadReport();" style="OVERFLOW: hidden; BORDER: 0px; MARGIN: 0px; PADDING: 0px">
<div id="oReportDiv" onresize="javascript:OnResizeDiv()" style="OVERFLOW: auto; WIDTH: 100%; HEIGHT: 100%">
//here being html code.
<script language="javascript" type="text/javascript">
<!--
var docMapIds = [];
//-->
</script>

</div>
</body>
</html>
///////////////////////////////////////////////////////
0
Comment
Question by:pureo
  • 4
  • 4
9 Comments
 
LVL 23

Expert Comment

by:rama_krishna580
ID: 10907011
0
 

Author Comment

by:pureo
ID: 10908125
Hi,

I have those links too. I need regex expression for my problem and not link how to clean up html.

Thanks,
Puero
0
 
LVL 10

Expert Comment

by:eternal_21
ID: 10909776
Just to clarify,

You want to remove all SCRIPT and META tags, except:

  1. SCRIPT tags that have the function specified (OnLoadReport), or
  2. SCRIPT tags that have any javascript functions,
  3. SCRIPT tags with any language functions ?
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Author Comment

by:pureo
ID: 10909794
Hello,

please in my first posting, don't mind this line: <script language="javascript" type="text/javascript" src="ReportViewer.js"></script>, that one is not in the source before entering the function. So the html I need to modify is the same as I posted in my first post, except this line in the head section. Sorry about that.

Thanks a lot, this is how it should look after modifications:
the result should look like this:


/////////////////////////////////////////////////
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>
</title>

<style type="text/css">//here being a stylesheet</style>

<script language="javascript" type="text/javascript">
<!--
function OnLoadReport()
{
var pageHits = null;
var rep = new Report(1, 4, pageHits, false, docMapIds);
if (parent != self) parent.OnLoadReport(rep);
}
//-->
</script>

</head>
<body onload="javascript:OnLoadReport();" style="OVERFLOW: hidden; BORDER: 0px; MARGIN: 0px; PADDING: 0px">
<div id="oReportDiv" onresize="javascript:OnResizeDiv()" style="OVERFLOW: auto; WIDTH: 100%; HEIGHT: 100%">
//here being html code.

</div>
</body>
</html>
///////////////////////////////////////////////////////
0
 
LVL 10

Expert Comment

by:eternal_21
ID: 10909814
What about this part:

<script language="javascript" type="text/javascript">
<!--
//-->
</script>
<script language="javascript" type="text/javascript" src="?rs:Command=Get&amp;rc:GetImage=8.00.743.00Report.js">
</script>

Is that in the source code as well?
0
 

Author Comment

by:pureo
ID: 10909823
Yes, that part is in the source code.

Thanks.
Pureo
0
 
LVL 10

Accepted Solution

by:
eternal_21 earned 500 total points
ID: 10909871
The following function:

  public static string ParseHtml(string sourceString)
  {
    string newString;

    // javascriptPattern matches any <META ...> tags
    const string metaPattern = @"<META[^>]*>(\r)?\n?";
    Regex metaRegex;
    metaRegex = new Regex(metaPattern, RegexOptions.Singleline|RegexOptions.IgnoreCase);
    newString = metaRegex.Replace(sourceString, "");

    // javascriptPattern matches any <SCRIPT> block that does not have a '{' or a '}'.
    const string javascriptPattern = @"<SCRIPT[^>]*>[^{}]*?</SCRIPT>(\r)?\n?";
    Regex javascriptRegex;
    javascriptRegex = new Regex(javascriptPattern, RegexOptions.Singleline|RegexOptions.IgnoreCase);
    newString = javascriptRegex.Replace(newString, "");

    return newString;
  }

Produced the output:

### OUTPUT ###

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>
</title>

<style type="text/css">//here being a stylesheet</style>

<script language="javascript" type="text/javascript">
<!--
function OnLoadReport()
{
var pageHits = null;
var rep = new Report(1, 4, pageHits, false, docMapIds);
if (parent != self) parent.OnLoadReport(rep);
}
//-->
</script>

</head>
<body onload="javascript:OnLoadReport();" style="OVERFLOW: hidden; BORDER: 0px; MARGIN: 0px; PADDING: 0px">
<div id="oReportDiv" onresize="javascript:OnResizeDiv()" style="OVERFLOW: auto; WIDTH: 100%; HEIGHT: 100%">

</div>
</body>
</html>

###

Based on this source code:

### SOURCE CODE ###

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>
</title>
<META http-equiv="Content-Type" content="text/html; charset=utf-8">
<META http-equiv="Content-Style-Type" content="text/css">
<META http-equiv="Content-Script-Type" content="text/javascript">

<style type="text/css">//here being a stylesheet</style>

<script language="javascript" type="text/javascript">
<!--
//-->
</script><script language="javascript" type="text/javascript" src="?rs:Command=Get&amp;rc:GetImage=8.00.743.00Report.js">

</script><script language="javascript" type="text/javascript">
<!--
function OnLoadReport()
{
var pageHits = null;
var rep = new Report(1, 4, pageHits, false, docMapIds);
if (parent != self) parent.OnLoadReport(rep);
}
//-->
</script>

<script language="javascript" type="text/javascript" src="ReportViewer.js"></script></head>
<body onload="javascript:OnLoadReport();" style="OVERFLOW: hidden; BORDER: 0px; MARGIN: 0px; PADDING: 0px">
<div id="oReportDiv" onresize="javascript:OnResizeDiv()" style="OVERFLOW: auto; WIDTH: 100%; HEIGHT: 100%">
<script language="javascript" type="text/javascript">
<!--
var docMapIds = [];
//-->
</script>

</div>
</body>
</html>

###
0
 
LVL 10

Expert Comment

by:eternal_21
ID: 10909872
Is that what you are looking for?
0
 

Author Comment

by:pureo
ID: 10909897
Nice, thanks a lot!

Pureo
0

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