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Posted 23 Oct 2008

Solving complex parsing tasks with RegexTreeer

, 23 Oct 2008 LGPL3
Solving complex parsing tasks by utilizing Regular Expression trees built with RegexTreeer.
//Author: Sergey Stoyan,
//        22 March 2008
//Copyright: (C) 2008, Sergey Stoyan
using System;
using System.IO;
using Cliver;

namespace Test
    class Test2
        internal void Run()
            //text to be parsed
            string page = File.ReadAllText("../../_pages/Companies.txt");


        //create CliverSoft.Parser from the regex tree stored in the file
        Cliver.Parser company_parser = new Parser("../../_config_files/Companies.rgx");

        /// <summary>
        /// Process the page by Cliver.Parser
        /// </summary>
        /// <param name="page">text to be parsed</param>
        void process_company_list(string page)
            Cliver.GroupCapture gc = company_parser.Parse(page);

            foreach (Cliver.GroupCapture company in gc["Company"])

                //generally number of group captures can be more than 1 
                //that's why we always have to ask to retrieve the first capture 
                //in spite of that we know that company name is only one for each company
                Console.WriteLine("Name: " + company.FirstValueOf("CompanyName"));
                Console.WriteLine("Address: " + company.FirstValueOf("CompanyAddress"));
                Console.WriteLine("Site: " + company.FirstValueOf("CompanySite"));

                foreach (Cliver.GroupCapture employee in company["Employee"])
                    Console.WriteLine("Name: " + employee.FirstValueOf("EmployeeName"));

                    //employee can have more than one phone in our sample, that's why we enum them in a cycle
                    foreach (string phone in employee.ValuesOf("EmployeePhone"))
                        Console.WriteLine("Pnone: " + phone);

                    Console.WriteLine("Mobile: " + employee.FirstValueOf("EmployeeMobile"));

                    Console.WriteLine("Email: " + employee.FirstValueOf("EmployeeEmail"));

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This article, along with any associated source code and files, is licensed under The GNU Lesser General Public License (LGPLv3)


About the Author

Sergey Stoyan
Architect CliverSoft (
Ukraine Ukraine
Sergey is graduated as applied mathematician. He is specialized in client/server applications, backup systems, data parsing tools, web crawlers and search engines. Work for CliverSoft Co. Favorite languages are C#, C++, Perl

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