ExtractRegExp Method (ExtractionCursor, String, String)

WebSocketMessage ExtractRegExp Method (ExtractionCursor, String, String)

C# API

Extracts text from the message content - everything between (but not including) the specified beforeRegExp and afterRegExp string objects - returning an empty string if they cannot be found.

Namespace: Facilita.Web
Assembly: clrWebBrowser (in clrWebBrowser.dll) Version: 9.5.8.37 (1.0.0.0)

Syntax

C++

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public string ExtractRegExp(
	ExtractionCursor cursor,
	string beforeRegExp,
	string afterRegExp
)

public string ExtractRegExp(
	ExtractionCursor cursor,
	string beforeRegExp,
	string afterRegExp
)

Parameters

cursor: Type: Facilita.Native ExtractionCursor
An ExtractionCursor object to store the success/failure of the action, and the index in the message at which the match was found.

beforeRegExp: Type: System String
This text is searched for in the message content, and the returned string starts immediately after this text occurs in the content.

afterRegExp: Type: System String
This text is searched for in the message content after the beforeRegExp text has been found, and the returned string ends immediately before this text occurs in the content.

Return Value

The extracted text, or an empty string if the extract failed.

Remarks

Information about the success/failure of this method will be stored in the ExtractionCursor object passed.

Note
The search is case-sensitive.

Examples

The following example demonstrates extracting text from some HTML.

C++

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ExtractionCursor cursor = new ExtractionCursor();

// <script type=\"text/JavaScript\" src=\"javascript/common.js\"></script>\<noscript>You do not have Javascript enabled.</noscript>\clientSrc=195.234.243.132;\ 
string extractedText = webSocketMessage.ExtractRegExp(
                        cursor,
                        "client[Ss][Rr][Cc]=|client[Ss][Rr][Cc][Hh][Ee][Aa][Dd][Ee][Rr]=",
                        ";",
                        true);

if (cursor.Succeeded)
{
    WriteMessage(string.Format("The value {0} was found at position {1}", extractedText, cursor.Index));
}

ExtractionCursor cursor = new ExtractionCursor();

// <script type=\"text/JavaScript\" src=\"javascript/common.js\"></script>\<noscript>You do not have Javascript enabled.</noscript>\clientSrc=195.234.243.132;\ 
string extractedText = webSocketMessage.ExtractRegExp(
                        cursor,
                        "client[Ss][Rr][Cc]=|client[Ss][Rr][Cc][Hh][Ee][Aa][Dd][Ee][Rr]=",
                        ";",
                        true);

if (cursor.Succeeded)
{
    WriteMessage(string.Format("The value {0} was found at position {1}", extractedText, cursor.Index));
}