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Parser Schemas– Easy and Powerful parsing of XML-based languages

, 18 Oct 2005 43.6K 454 44
An article on parsing XML files according to the specified schema.
 * Comnicate.CodeDom.Xml.ParserSchemas                                 *
 * Parses xml-based languages according to a user defined schema.      *
 * Copyright � 2005 Tomas Deml (as Comnicate!)                         *
 *                                          *
 *                                                                     *
 * This library is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public          *
 * License as published by the Free Software Foundation; either        *
 * version 2.1 of the License, or (at your option) any later version.  *
 *                                                                     *
 * This library is distributed in the hope that it will be useful,     *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of      *
 * Lesser General Public License for more details.                     *

using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;

namespace Comnicate.CodeDom.Xml.ParserSchemas.Rules.Evaluation.PrimitiveValueValidators
    /// <summary>
    /// Validates the value according to a specified regex pattern.
    /// </summary>
    public sealed class RegexValidator : IValueValidator
        #region Fields

        private Regex Regex;


        #region .ctors, properties & methods

        /// <summary>
        /// Initializes a new instance of the <see cref="RegexValidator"/> class.
        /// </summary>
        private RegexValidator() { }

        /// <summary>
        /// Creates the validator for a specific regex pattern.
        /// </summary>
        public static IValueValidator Create(Regex regexPattern)
            // Null?
            if (regexPattern == null) throw new ArgumentNullException("regexPattern");

            // Create specific instance
            RegexValidator validator = new RegexValidator();
            validator.Regex = regexPattern;

            // Return
            return validator;

        #region IValueValidator Members

        /// <summary>
        /// Validates the enum value.
        /// </summary>
        /// <param name="value">Enum value.</param>
        /// <param name="matchingRule">Rule to validate.</param>
        /// <returns>True if valid; false if invalid.</returns>
        public bool IsValidValue(string value, ValidatingNonParentalRule matchingRule)
            return this.Regex.IsMatch(value);



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About the Author

Tomas Deml
Czech Republic Czech Republic
I'm a student of the Low-voltage Electrical Engineering specialized on Computing from the Czech republic.

I'm a C# kind of guy, fan of .NET.

I've formed a programming group called 'Comnicate!'. Currently the only member of the group is myself. Wink | ;-)

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