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# Kommentar
path=C:\temp\
mask=*.csv
pattern=Suchmich                    

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

namespace FileSearch
{
    class Program
    {
        static int Main(string[] args)
        {
            string mask = "*.csv";
            string pattern = "SUCHTEXT";
            string sourcePath = @"C:\temp\";

            FileStream fs;
            StreamReader reader;
            string config;

            if (args.Length < 2)
            {
                Console.WriteLine("usage: FileSearch file.ini output.txt");
                return 1;
            }

            try {
                fs = File.Open(args[0], FileMode.Open, FileAccess.Read, FileShare.Read);
                reader = new StreamReader(fs);
                config = reader.ReadToEnd();
                reader.Close();
            }
            catch (Exception) {
                Console.WriteLine("Could not read %s", args[0]);
                return 2;
            }

            if (config.Length > 0)
            {
                string[] lines = config.Split(new char[] { '\n' });
                Dictionary<string, string> mysettings = new Dictionary<string, string>();
                foreach (string line in lines)
                {
                    if (! line.StartsWith("#"))
                    {
                        int i = line.IndexOf('=');
                        if (i >= 0)
                        {
                            mysettings.Add( line.Substring(0,i).Trim() , line.Substring(i+1).Trim());
                        }
                    }
                }

                sourcePath = mysettings["path"];
                mask = mysettings["mask"];
                pattern = mysettings["pattern"];
            }

            var matches = Directory.GetFiles(sourcePath, mask, SearchOption.TopDirectoryOnly);
            string destFile = args[1];

            StreamWriter txt;
            try
            {
                txt = new StreamWriter(File.Open(destFile, FileMode.Create, FileAccess.Write, FileShare.None));
            }
            catch (Exception)
            {
                Console.WriteLine("Could not write %s", destFile);
                return 5;
            }

            foreach (string file in matches)
            {
                string fileName = Path.GetFileName(file);
                StreamReader csv;
                try
                {
                    csv = new StreamReader(File.Open(file, FileMode.Open, FileAccess.Read, FileShare.Read));
                }
                catch (Exception)
                {
                    Console.WriteLine("Could not open %s", file);
                    return 6;
                }

                while (csv.Peek() >= 0)
                {
                    string line = csv.ReadLine();
                    if (line.IndexOf(pattern) >= 0)
                    {
                        txt.WriteLine(fileName);
                        break;
                    }
                }

                csv.Close();
            }

            txt.Close();

            return 0;
        }
    }
}