Main.cs :  » Persistence-Frameworks » FileHelpers-Library » FileReplace » C# / CSharp Open Source

using System;
using System.IO;
using System.Text;

namespace FileReplace{
  /// <summary>
  /// Summary description for Class1.
  /// </summary>
  class Replacer
  {
    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main(string[] args)
    {
      if (args.Length < 3)
        ShowSyntaxs();
      else
      {
        string destFile, srcString, newString;

        destFile = args[0];
        srcString = args[1];
        newString = args[2];

        if (srcString == string.Empty)
        {
          ShowSyntaxs();
          Environment.Exit(-1);
          return;
        }

        if (newString == "-f")
        {
          if (args.Length < 4)
          {
            ShowSyntaxs();
            Environment.Exit(-1);
            return;
          }

          System.IO.StreamReader reader = new StreamReader(args[3]);
          newString = reader.ReadToEnd();
          reader.Close();
        
        }

        if (args[args.Length - 1].ToLower() == "-v")
          mVerbose = false;

        foreach (string  file in Directory.GetFiles(Path.GetDirectoryName(destFile), Path.GetFileName(destFile)))
        {
          ReplaceFile(file, newString, srcString);
        }

      }
    }

    static bool mVerbose = true;
    private static void ReplaceFile(string destFile, string newString, string srcString)
    {
      System.IO.StreamReader reader = new StreamReader(destFile, Encoding.Default);
      string originalStr = reader.ReadToEnd();
      reader.Close();

      StreamWriter writer = new StreamWriter(destFile, false, Encoding.Default);
      writer.Write(originalStr.Replace(srcString, newString));
      writer.Close();

      if (mVerbose) Console.WriteLine("Replaced: '" + FirstChars(srcString, 25) + "' --> '" + FirstChars(newString, 25) + "'.");
    }

    private static string FirstChars(string source, int chars)
    {
      return source.Substring(0, Math.Min(chars, source.Length)).Replace(Environment.NewLine, " ");
      
    }

    private static void ShowSyntaxs()
    {
      Console.WriteLine("Syntaxis:");
      Console.WriteLine("");
      Console.WriteLine("FileReplace.exe destFile srcString destString");
      Console.WriteLine("");
      Console.WriteLine("   or");
      Console.WriteLine("FileReplace.exe destFile srcString -f destSourceFile");
    }
  }
}