/// <inheritdoc/>
        public override bool Write(List <string> inputFiles, string outDir, List <BaseFile> baseFiles)
        {
            bool   success  = false;
            string tempFile = Path.Combine(outDir, $"tmp{Guid.NewGuid()}");

            // If either list of roms is null or empty, return
            if (inputFiles == null || baseFiles == null || inputFiles.Count == 0 || baseFiles.Count == 0)
            {
                return(success);
            }

            // If the number of inputs is less than the number of available roms, return
            if (inputFiles.Count < baseFiles.Count)
            {
                return(success);
            }

            // If one of the files doesn't exist, return
            foreach (string file in inputFiles)
            {
                if (!File.Exists(file))
                {
                    return(success);
                }
            }

            // Get the output archive name from the first rebuild rom
            string archiveFileName = Path.Combine(outDir, Utilities.RemovePathUnsafeCharacters(baseFiles[0].Parent) + (baseFiles[0].Parent.EndsWith(".7z") ? string.Empty : ".7z"));

            // Set internal variables
            Stream    writeStream = null;
            SevenZ    oldZipFile  = new SevenZ();
            SevenZ    zipFile     = new SevenZ();
            ZipReturn zipReturn   = ZipReturn.ZipGood;

            try
            {
                // If the full output path doesn't exist, create it
                if (!Directory.Exists(Path.GetDirectoryName(archiveFileName)))
                {
                    Directory.CreateDirectory(Path.GetDirectoryName(archiveFileName));
                }

                // If the archive doesn't exist, create it and put the single file
                if (!File.Exists(archiveFileName))
                {
                    zipReturn = zipFile.ZipFileCreate(tempFile);

                    // Map all inputs to index
                    Dictionary <string, int> inputIndexMap = new Dictionary <string, int>();
                    for (int i = 0; i < inputFiles.Count; i++)
                    {
                        inputIndexMap.Add(baseFiles[i].Filename.Replace('\\', '/'), i);
                    }

                    // Sort the keys in TZIP order
                    List <string> keys = inputIndexMap.Keys.ToList();
                    keys.Sort(ZipUtils.TrrntZipStringCompare);

                    // Now add all of the files in order
                    foreach (string key in keys)
                    {
                        // Get the index mapped to the key
                        int index = inputIndexMap[key];

                        // Open the input file for reading
                        Stream freadStream = File.OpenRead(inputFiles[index]);
                        ulong  istreamSize = (ulong)(new FileInfo(inputFiles[index]).Length);

                        DateTime dt = DateTime.Now;
                        if (UseDates && !string.IsNullOrWhiteSpace(baseFiles[index].Date) && DateTime.TryParse(baseFiles[index].Date.Replace('\\', '/'), out dt))
                        {
                            long       msDosDateTime = Utilities.ConvertDateTimeToMsDosTimeFormat(dt);
                            TimeStamps ts            = new TimeStamps {
                                ModTime = msDosDateTime
                            };
                            zipFile.ZipFileOpenWriteStream(false, false, baseFiles[index].Filename.Replace('\\', '/'), istreamSize, 0, out writeStream, ts);
                        }
                        else
                        {
                            zipFile.ZipFileOpenWriteStream(false, true, baseFiles[index].Filename.Replace('\\', '/'), istreamSize, 0, out writeStream, null);
                        }

                        // Copy the input stream to the output
                        byte[] ibuffer = new byte[_bufferSize];
                        int    ilen;
                        while ((ilen = freadStream.Read(ibuffer, 0, _bufferSize)) > 0)
                        {
                            writeStream.Write(ibuffer, 0, ilen);
                            writeStream.Flush();
                        }

                        freadStream.Dispose();
                        zipFile.ZipFileCloseWriteStream(baseFiles[index].CRC);
                    }
                }

                // Otherwise, sort the input files and write out in the correct order
                else
                {
                    // Open the old archive for reading
                    oldZipFile.ZipFileOpen(archiveFileName, -1, true);

                    // Map all inputs to index
                    Dictionary <string, int> inputIndexMap = new Dictionary <string, int>();
                    for (int i = 0; i < inputFiles.Count; i++)
                    {
                        var oldZipFileContents = new List <string>();
                        for (int j = 0; j < oldZipFile.LocalFilesCount(); j++)
                        {
                            oldZipFileContents.Add(oldZipFile.Filename(j));
                        }

                        // If the old one contains the new file, then just skip out
                        if (oldZipFileContents.Contains(baseFiles[i].Filename.Replace('\\', '/')))
                        {
                            continue;
                        }

                        inputIndexMap.Add(baseFiles[i].Filename.Replace('\\', '/'), -(i + 1));
                    }

                    // Then add all of the old entries to it too
                    for (int i = 0; i < oldZipFile.LocalFilesCount(); i++)
                    {
                        inputIndexMap.Add(oldZipFile.Filename(i), i);
                    }

                    // If the number of entries is the same as the old archive, skip out
                    if (inputIndexMap.Keys.Count <= oldZipFile.LocalFilesCount())
                    {
                        success = true;
                        return(success);
                    }

                    // Otherwise, process the old zipfile
                    zipFile.ZipFileCreate(tempFile);

                    // Get the order for the entries with the new file
                    List <string> keys = inputIndexMap.Keys.ToList();
                    keys.Sort(ZipUtils.TrrntZipStringCompare);

                    // Copy over all files to the new archive
                    foreach (string key in keys)
                    {
                        // Get the index mapped to the key
                        int index = inputIndexMap[key];

                        // If we have the input file, add it now
                        if (index < 0)
                        {
                            // Open the input file for reading
                            Stream freadStream = File.OpenRead(inputFiles[-index - 1]);
                            ulong  istreamSize = (ulong)(new FileInfo(inputFiles[-index - 1]).Length);

                            DateTime dt = DateTime.Now;
                            if (UseDates && !string.IsNullOrWhiteSpace(baseFiles[-index - 1].Date) && DateTime.TryParse(baseFiles[-index - 1].Date.Replace('\\', '/'), out dt))
                            {
                                long       msDosDateTime = Utilities.ConvertDateTimeToMsDosTimeFormat(dt);
                                TimeStamps ts            = new TimeStamps {
                                    ModTime = msDosDateTime
                                };
                                zipFile.ZipFileOpenWriteStream(false, false, baseFiles[-index - 1].Filename.Replace('\\', '/'), istreamSize, 0, out writeStream, ts);
                            }
                            else
                            {
                                zipFile.ZipFileOpenWriteStream(false, true, baseFiles[-index - 1].Filename.Replace('\\', '/'), istreamSize, 0, out writeStream, null);
                            }

                            // Copy the input stream to the output
                            byte[] ibuffer = new byte[_bufferSize];
                            int    ilen;
                            while ((ilen = freadStream.Read(ibuffer, 0, _bufferSize)) > 0)
                            {
                                writeStream.Write(ibuffer, 0, ilen);
                                writeStream.Flush();
                            }
                            freadStream.Dispose();
                            zipFile.ZipFileCloseWriteStream(baseFiles[-index - 1].CRC);
                        }

                        // Otherwise, copy the file from the old archive
                        else
                        {
                            // Instantiate the streams
                            oldZipFile.ZipFileOpenReadStream(index, out Stream zreadStream, out ulong istreamSize);
                            zipFile.ZipFileOpenWriteStream(false, true, oldZipFile.Filename(index), istreamSize, 0, out writeStream, null);

                            // Copy the input stream to the output
                            byte[] ibuffer = new byte[_bufferSize];
                            int    ilen;
                            while ((ilen = zreadStream.Read(ibuffer, 0, _bufferSize)) > 0)
                            {
                                writeStream.Write(ibuffer, 0, ilen);
                                writeStream.Flush();
                            }

                            zipFile.ZipFileCloseWriteStream(oldZipFile.CRC32(index));
                        }
                    }
                }

                // Close the output zip file
                zipFile.ZipFileClose();
                oldZipFile.ZipFileClose();

                success = true;
            }
            catch (Exception ex)
            {
                logger.Error(ex);
                success = false;
            }

            // If the old file exists, delete it and replace
            if (File.Exists(archiveFileName))
            {
                File.Delete(archiveFileName);
            }
            File.Move(tempFile, archiveFileName);

            return(true);
        }
Exemple #2
0
        /// <summary>
        /// Write an input file to a torrent7z archive
        /// </summary>
        /// <param name="inputStream">Input stream to be moved</param>
        /// <param name="outDir">Output directory to build to</param>
        /// <param name="rom">DatItem representing the new information</param>
        /// <returns>True if the archive was written properly, false otherwise</returns>
        public override bool Write(Stream inputStream, string outDir, Rom rom)
        {
            bool   success  = false;
            string tempFile = Path.Combine(outDir, $"tmp{Guid.NewGuid()}");

            // If either input is null or empty, return
            if (inputStream == null || rom == null || rom.Name == null)
            {
                return(success);
            }

            // If the stream is not readable, return
            if (!inputStream.CanRead)
            {
                return(success);
            }

            // Seek to the beginning of the stream
            inputStream.Seek(0, SeekOrigin.Begin);

            // Get the output archive name from the first rebuild rom
            string archiveFileName = Path.Combine(outDir, Sanitizer.RemovePathUnsafeCharacters(rom.Machine.Name) + (rom.Machine.Name.EndsWith(".7z") ? string.Empty : ".7z"));

            // Set internal variables
            Stream    writeStream = null;
            SevenZ    oldZipFile  = new SevenZ();
            SevenZ    zipFile     = new SevenZ();
            ZipReturn zipReturn   = ZipReturn.ZipGood;

            try
            {
                // If the full output path doesn't exist, create it
                if (!Directory.Exists(Path.GetDirectoryName(archiveFileName)))
                {
                    Directory.CreateDirectory(Path.GetDirectoryName(archiveFileName));
                }

                // If the archive doesn't exist, create it and put the single file
                if (!File.Exists(archiveFileName))
                {
                    inputStream.Seek(0, SeekOrigin.Begin);
                    zipReturn = zipFile.ZipFileCreate(tempFile);

                    // Open the input file for reading
                    ulong istreamSize = (ulong)(inputStream.Length);

                    DateTime dt = DateTime.Now;
                    if (UseDates && !string.IsNullOrWhiteSpace(rom.Date) && DateTime.TryParse(rom.Date.Replace('\\', '/'), out dt))
                    {
                        uint msDosDateTime = Utilities.ConvertDateTimeToMsDosTimeFormat(dt);
                        zipFile.ZipFileOpenWriteStream(false, false, rom.Name.Replace('\\', '/'), istreamSize, 0, msDosDateTime, out writeStream);
                    }
                    else
                    {
                        zipFile.ZipFileOpenWriteStream(false, true, rom.Name.Replace('\\', '/'), istreamSize, 0, null, out writeStream);
                    }

                    // Copy the input stream to the output
                    byte[] ibuffer = new byte[_bufferSize];
                    int    ilen;
                    while ((ilen = inputStream.Read(ibuffer, 0, _bufferSize)) > 0)
                    {
                        writeStream.Write(ibuffer, 0, ilen);
                        writeStream.Flush();
                    }

                    zipFile.ZipFileCloseWriteStream(Utilities.StringToByteArray(rom.CRC));
                }

                // Otherwise, sort the input files and write out in the correct order
                else
                {
                    // Open the old archive for reading
                    oldZipFile.ZipFileOpen(archiveFileName, -1, true);

                    // Map all inputs to index
                    Dictionary <string, int> inputIndexMap = new Dictionary <string, int>();
                    var oldZipFileContents = new List <string>();
                    for (int i = 0; i < oldZipFile.LocalFilesCount(); i++)
                    {
                        oldZipFileContents.Add(oldZipFile.Filename(i));
                    }

                    // If the old one doesn't contain the new file, then add it
                    if (!oldZipFileContents.Contains(rom.Name.Replace('\\', '/')))
                    {
                        inputIndexMap.Add(rom.Name.Replace('\\', '/'), -1);
                    }

                    // Then add all of the old entries to it too
                    for (int i = 0; i < oldZipFile.LocalFilesCount(); i++)
                    {
                        inputIndexMap.Add(oldZipFile.Filename(i), i);
                    }

                    // If the number of entries is the same as the old archive, skip out
                    if (inputIndexMap.Keys.Count <= oldZipFile.LocalFilesCount())
                    {
                        success = true;
                        return(success);
                    }

                    // Otherwise, process the old zipfile
                    zipFile.ZipFileCreate(tempFile);

                    // Get the order for the entries with the new file
                    List <string> keys = inputIndexMap.Keys.ToList();
                    keys.Sort(ZipFile.TrrntZipStringCompare);

                    // Copy over all files to the new archive
                    foreach (string key in keys)
                    {
                        // Get the index mapped to the key
                        int index = inputIndexMap[key];

                        // If we have the input file, add it now
                        if (index < 0)
                        {
                            // Open the input file for reading
                            ulong istreamSize = (ulong)(inputStream.Length);

                            DateTime dt = DateTime.Now;
                            if (UseDates && !string.IsNullOrWhiteSpace(rom.Date) && DateTime.TryParse(rom.Date.Replace('\\', '/'), out dt))
                            {
                                uint msDosDateTime = Utilities.ConvertDateTimeToMsDosTimeFormat(dt);
                                zipFile.ZipFileOpenWriteStream(false, false, rom.Name.Replace('\\', '/'), istreamSize, 0, msDosDateTime, out writeStream);
                            }
                            else
                            {
                                zipFile.ZipFileOpenWriteStream(false, true, rom.Name.Replace('\\', '/'), istreamSize, 0, null, out writeStream);
                            }

                            // Copy the input stream to the output
                            byte[] ibuffer = new byte[_bufferSize];
                            int    ilen;
                            while ((ilen = inputStream.Read(ibuffer, 0, _bufferSize)) > 0)
                            {
                                writeStream.Write(ibuffer, 0, ilen);
                                writeStream.Flush();
                            }

                            zipFile.ZipFileCloseWriteStream(Utilities.StringToByteArray(rom.CRC));
                        }

                        // Otherwise, copy the file from the old archive
                        else
                        {
                            // Instantiate the streams
                            oldZipFile.ZipFileOpenReadStream(index, out Stream zreadStream, out ulong istreamSize);
                            zipFile.ZipFileOpenWriteStream(false, true, oldZipFile.Filename(index), istreamSize, 0, null, out writeStream);

                            // Copy the input stream to the output
                            byte[] ibuffer = new byte[_bufferSize];
                            int    ilen;
                            while ((ilen = zreadStream.Read(ibuffer, 0, _bufferSize)) > 0)
                            {
                                writeStream.Write(ibuffer, 0, ilen);
                                writeStream.Flush();
                            }

                            oldZipFile.ZipFileCloseReadStream();
                            zipFile.ZipFileCloseWriteStream(oldZipFile.CRC32(index));
                        }
                    }
                }

                // Close the output zip file
                zipFile.ZipFileClose();
                oldZipFile.ZipFileClose();

                success = true;
            }
            catch (Exception ex)
            {
                logger.Error(ex);
                success = false;
            }
            finally
            {
            }

            // If the old file exists, delete it and replace
            if (File.Exists(archiveFileName))
            {
                FileExtensions.TryDelete(archiveFileName);
            }

            File.Move(tempFile, archiveFileName);

            return(true);
        }