duplicati/Tools/ZipFileDebugger/Program.cs

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

namespace ZipFileDebugger
{
    class MainClass
    {
        public static void Main(string[] _args)
        {
            var args = new List<string>(_args);
            var opts = Duplicati.Library.Utility.CommandLineParser.ExtractOptions(args, null);

            if (args == null || args.Count == 0)
            {
                Console.WriteLine("Usage:");
                Console.WriteLine("{0} <filename.zip>", System.Reflection.Assembly.GetEntryAssembly().Location);
                return;
            }

            Duplicati.Library.Logging.Log.LogLevel = Duplicati.Library.Logging.LogMessageType.Profiling;
            Duplicati.Library.Logging.Log.CurrentLog = new Duplicati.Library.Logging.StreamLog(Console.OpenStandardOutput());

            var filecount = 0;
            var errorcount = 0;
            foreach (var file in args)
            {
                if (!File.Exists(file))
                {
                    Console.WriteLine("File not found: {0}", file);
                    continue;
                }

                if (new FileInfo(file).Length == 0)
                {
                    Console.WriteLine("File is emtpy: {0}", file);
                    continue;
                }

                Console.WriteLine("Opening zip file {0}", file);

                var errors = false;

                try
                {
                    filecount++;
                    using (var zr = new Duplicati.Library.Compression.FileArchiveZip(file, opts))
                    {
                        var files = zr.ListFilesWithSize(null).ToArray();
                        Console.WriteLine("Found {0} files in archive, testing read-ability for each", files.Length);

                        for (var i = 0; i < files.Length; i++)
                        {
                            Console.Write("Opening file #{0} - {1}", i + 1, files[i].Key);
                            try
                            {
                                using (var ms = new MemoryStream())
                                using (var sr = zr.OpenRead(files[i].Key))
                                {
                                    sr.CopyTo(ms);

                                    if (ms.Length == files[i].Value)
                                        Console.WriteLine(" -- success");
                                    else
                                        Console.WriteLine(" -- bad length: {0} vs {1}", ms.Length, files[i].Value);
                                }
                            }
                            catch (Exception ex)
                            {
                                errors = true;
                                Console.WriteLine(" -- failed: {0}", ex);
                            }

                        }
                    }

                    if (errors)
                    {
                        Console.WriteLine("Found errors while processing file {0}", file);
                        errorcount++;
                    }
					else
                        Console.WriteLine("Processed file {0} with no errors", file);
                }
                catch (Exception ex)
                {
                    errorcount++;
                    Console.WriteLine("Open failed: {0}", ex);
                }
            }

            Console.Write("Processed {0} zip files", filecount);
            if (errorcount == 0)
                Console.WriteLine(" without errors");
            else
                Console.WriteLine(" and found {0} errors", errorcount);
        }
    }
}