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//
// SubSonic - http://subsonicproject.com
//
// The contents of this file are subject to the New BSD
// License (the "License"); you may not use this file
// except in compliance with the License. You may obtain a copy of
// the License at http://www.opensource.org/licenses/bsd-license.php
//
// Software distributed under the License is distributed on an
// "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
// implied. See the License for the specific language governing
// rights and limitations under the License.
//
using System.IO;
using System.Net;

/// <summary>
/// Summary for the Files class
/// </summary>
public static class IO {
    /// <summary>
    /// Read a text file and obtain it's contents.
    /// </summary>
    /// <param name="absolutePath">The complete file path to write to.</param>
    /// <returns>String containing the content of the file.</returns>
    public static string GetFileText(this string absolutePath) {
        using (StreamReader sr = new StreamReader(absolutePath))
            return sr.ReadToEnd();
    }

    /// <summary>
    /// Creates or opens a file for writing and writes text to it.
    /// </summary>
    /// <param name="absolutePath">The complete file path to write to.</param>
    /// <param name="fileText">A String containing text to be written to the file.</param>
    public static void CreateToFile(this string fileText, string absolutePath) {
        using (StreamWriter sw = File.CreateText(absolutePath))
            sw.Write(fileText);
    }

    /// <summary>
    /// Update text within a file by replacing a substring within the file.
    /// </summary>
    /// <param name="absolutePath">The complete file path to write to.</param>
    /// <param name="lookFor">A String to be replaced.</param>
    /// <param name="replaceWith">A String to replace all occurrences of lookFor.</param>
    public static void UpdateFileText(this string absolutePath, string lookFor, string replaceWith) {
        string newText = GetFileText(absolutePath).Replace(lookFor, replaceWith);
        WriteToFile(absolutePath, newText);
    }

    /// <summary>
    /// Writes out a string to a file.
    /// </summary>
    /// <param name="absolutePath">The complete file path to write to.</param>
    /// <param name="fileText">A String containing text to be written to the file.</param>
    public static void WriteToFile(this string absolutePath, string fileText) {
        using (StreamWriter sw = new StreamWriter(absolutePath, false))
            sw.Write(fileText);
    }

    /// <summary>
    /// Fetches a web page
    /// </summary>
    /// <param name="url">The URL.</param>
    /// <returns></returns>
    public static string ReadWebPage(string url) {
        return ReadWebResponse(GetWebResponse(url));
    }

    public static string ReadWebResponse(WebResponse response)
    {
        string result = "";

        using (Stream stream = response.GetResponseStream())
        {
            StreamReader sr = new StreamReader(stream);
            result = sr.ReadToEnd();
            sr.Close();
        }
        return result;

    }

    /// <summary>
    /// Fetches a web page
    /// </summary>
    /// <param name="url">The URL.</param>
    /// <returns></returns>
    public static HttpWebResponse GetWebResponse(string url)
    {
        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
        return (HttpWebResponse)request.GetResponse();

    }
}
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