How to extract string between """

[StanONE]

Hi,

I want to write a Code-to-HTML libaray and add <font color="orange"> tags to string between "" (" in html).

 

For example, the line :

 

"<%@ TagName="SourceCtrl" ABC=""6876786""%>"

 

will be replaced as :

 

"<%@ TagName=<font color="orange">"SourceCtrl"</font> ABC=<font color="orange">""6876786""</font>%>"

 

It means the line :

 

<%@ TageName="SourceCtrl" ABC=""6876786"">

 

would be:

 

<%@ TageName="SourceCtrl" ABC=""6876786"">

 

I'v tried to write an RE but failed. http://www.xtremedotnettalk.com/x_images/images/smilies/frown.gif

 

Const TAG_FNTORG As String = "<font color=" + Chr(34) + "orange" + Chr(34) + ">"

 

Dim sourceLine As String = "<%@ TagName="SourceCtrl" ABC=""6876786""%>"

Dim sourceLine2 As String = ""

 

searchExpr = "(?i)" + "(?<a>(")(.*?))" + "(?<b>(.+?))" + "(?<c>("))"

replaceExpr = TAG_FNTORG + "${a}" + "${b}" + "${c}" + TAG_EFONT

 

If (Regex.IsMatch(sourceLine, searchExpr)) Then

sourceLine2 = Regex.Replace(sourceLine, searchExpr, replaceExpr)

End If

 

Any correction appreciated!

 

Regards,

 

Stanley

Edited February 21, 2005 by Iceplug

[Richard Crist]

Maybe

 

I may be making this too simple, but here's my suggestion:

 

To change

 

"<%@ TagName="SourceCtrl" ABC=""6876786""%>"

 

to

 

"<%@ TagName=<font color="orange">"SourceCtrl"</font> ABC=<font color="orange">""6876786""</font>%>"

 

use the following:

 

Search for

 

(TagName\=)

 

replace with

 

\1<font color="orange">

 

Search for

 

( ABC=)

 

replace with

 

</font>\1<font color="orange">

 

Search for

 

(\%\&gt\;)

 

replace with

 

</font>\1

 

Please reply if I'm off the mark, which I'm reasonably sure that I am. :p

[seve7_wa]

Umm, ouch, that hurt my head to think about!

 

mmmaybe:

((?:\&quot\;\s*)+(?:(?:\&*(?!quot\;)[^\&]*\&*(?!quot\;))*[^&]*)(?:\&quot\;\s*)+)

which should grab all text within the outermost group of quotes, and those

outermost quotes, putting them in $parameter ... consumes these

blocks so they are not included in future searches.

 

 

This is what I was thinking, how I got there:

(?<=\&quot\;)(\w+?)(?=\&quot\;)
grabs [b]$parameter[/b] to let you wrap around the text inside the quotes.
--since \w is not greedy it will be innermost, and it must be between quotes.
But it will also grab text between two quoted blocks.  :(

\&(?!quot\;)
Ampersands not including &qout;

[^\&]*\&*(?!quot\;)
All text UpToAndIncluding an ampersand(s), not including "

(?:\&*(?!quot\;)[^\&]*\&*(?!quot\;))*
All text UpToAndIncluding the last ampersand(s), not including "

(?:(?:\&*(?!quot\;)[^\&]*\&*(?!quot\;))*[^&]*)
All text UpToAndIncluding the last ampersand(s), not including ",
and then all text until a quote.

((?:\&quot\;\s*)+(?:(?:\&*(?!quot\;)[^\&]*\&*(?!quot\;))*[^&]*)(?:\&quot\;\s*)+)
grabs all text within the outermost group of quotes, and those outermost 
quotes ... consumes these blocks so they are not included in future searches.

 

maybe not perfect, but close(?).

[seve7_wa]

in RE: my last post,

 

the big problem i see is a string like:

<%@ TagName="SourceCtrl" ABC=""6876786"""abc"%>

 

This will highlight like

<%@ TagName="SourceCtrl" ABC=""6876786"""abc"%>

instead of

<%@ TagName="SourceCtrl" ABC=""6876786"""abc"%>

Or

<%@ TagName="SourceCtrl" ABC=""6876786"""abc"%>

[StanONE]

in RE: my last post,

 

the big problem i see is a string like:

 

This will highlight like

 

instead of

 

Hi,

Thanks for great help.

Try this!But it met the same problem as yours.

 

Const TAG_FNTORG As String = "<font color=" + Chr(34) + "orange" + Chr(34) + ">"

Dim sourceLine As String = "<%@ TagName="SourceCtrl" ABC=""6876786""%>"
Dim sourceLine2 As String = ""

searchExpr = [color="#FF0080"]"(?i)" + "(?<a>(")(.*?))" + "(?<b>(.+?))" + "(?<c>(")+)"[/color]
replaceExpr = TAG_FNTORG + "${a}" + "${b}" + "${c}" + TAG_EFONT

If (Regex.IsMatch(sourceLine, searchExpr)) Then
sourceLine2 = Regex.Replace(sourceLine, searchExpr, replaceExpr)
End If 

[HJB417]

static void Main(string[] args)
{
MatchEvaluator me = new MatchEvaluator(ReplaceWithOrnageFont);
Regex regex = new Regex("(?<beginQuote>")(?<txt>.*?)(?<endQuote>")");

string input = "<%@ TagName="SourceCtrl" ABC=""6876786""%>";
Console.WriteLine("\"{0}\"\r\n", input);
Console.WriteLine("\"{0}\"", regex.Replace(input, me));
}

static string ReplaceWithOrnageFont(Match match)
{
return "<font color=\"orange\">"" + match.Result("${txt}") + ""</font>";
}

 

 

"<%@ TagName="SourceCtrl" ABC=""6876786""%>"

 

 

"<%@ TagName=<font color="orange">"SourceCtrl"</font> ABC=<fontcolor="orange">""</font>6876786<font color="orange">""</font>%>"