Exemplo n.º 1
0
        /// <summary>
        /// Write a set of input files to a tape archive (assuming the same output archive name)
        /// </summary>
        /// <param name="inputFiles">Input files 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(List <string> inputFiles, string outDir, List <Rom> roms)
        {
            bool   success  = false;
            string tempFile = Path.Combine(outDir, $"tmp{Guid.NewGuid()}");

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

            // If the number of inputs is less than the number of available roms, return
            if (inputFiles.Count < roms.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, Sanitizer.RemovePathUnsafeCharacters(roms[0].Machine.Name) + (roms[0].Machine.Name.EndsWith(".tar") ? string.Empty : ".tar"));

            // Set internal variables
            TarArchive oldTarFile = TarArchive.Create();
            TarArchive tarFile    = TarArchive.Create();

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

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

                        // Get temporary date-time if possible
                        DateTime?usableDate = null;
                        if (UseDates && !string.IsNullOrWhiteSpace(roms[index].Date) && DateTime.TryParse(roms[index].Date.Replace('\\', '/'), out DateTime dt))
                        {
                            usableDate = dt;
                        }

                        // Copy the input stream to the output
                        tarFile.AddEntry(roms[index].Name, FileExtensions.TryOpenRead(inputFiles[index]), size: roms[index].Size ?? 0, modified: usableDate);
                    }
                }

                // Otherwise, sort the input files and write out in the correct order
                else
                {
                    // Open the old archive for reading
                    oldTarFile = TarArchive.Open(archiveFileName);

                    // Get a list of all current entries
                    List <string> entries = oldTarFile.Entries.Select(i => i.Key).ToList();

                    // Map all inputs to index
                    Dictionary <string, int> inputIndexMap = new Dictionary <string, int>();
                    for (int i = 0; i < inputFiles.Count; i++)
                    {
                        // If the old one contains the new file, then just skip out
                        if (entries.Contains(roms[i].Name.Replace('\\', '/')))
                        {
                            continue;
                        }

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

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

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

                    // 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)
                        {
                            // Get temporary date-time if possible
                            DateTime?usableDate = null;
                            if (UseDates && !string.IsNullOrWhiteSpace(roms[-index - 1].Date) && DateTime.TryParse(roms[-index - 1].Date.Replace('\\', '/'), out DateTime dt))
                            {
                                usableDate = dt;
                            }

                            // Copy the input file to the output
                            tarFile.AddEntry(roms[-index - 1].Name, FileExtensions.TryOpenRead(inputFiles[-index - 1]), size: roms[-index - 1].Size ?? 0, modified: usableDate);
                        }

                        // Otherwise, copy the file from the old archive
                        else
                        {
                            // Get the stream from the original archive
                            TarArchiveEntry tae   = oldTarFile.Entries.ElementAt(index);
                            MemoryStream    entry = new MemoryStream();
                            tae.OpenEntryStream().CopyTo(entry);

                            // Copy the input stream to the output
                            tarFile.AddEntry(key, entry, size: tae.Size, modified: tae.LastModifiedTime);
                        }
                    }
                }

                // Close the output tar file
                tarFile.SaveTo(tempFile, new WriterOptions(CompressionType.None));

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

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

            return(true);
        }
Exemplo n.º 2
0
        /// <summary>
        /// Write an input stream to a tape 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>
        /// <param name="date">True if the date from the DAT should be used if available, false otherwise (default)</param>
        /// <param name="romba">True if files should be output in Romba depot folders, false otherwise</param>
        /// <returns>True if the archive was written properly, false otherwise</returns>
        public override bool Write(Stream inputStream, string outDir, Rom rom, bool date = false, bool romba = false)
        {
            bool   success  = false;
            string tempFile = Path.Combine(outDir, "tmp" + Guid.NewGuid().ToString());

            // 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);
            }

            // Get the output archive name from the first rebuild rom
            string archiveFileName = Path.Combine(outDir, Utilities.RemovePathUnsafeCharacters(rom.MachineName) + (rom.MachineName.EndsWith(".tar") ? "" : ".tar"));

            // Set internal variables
            TarArchive oldTarFile = TarArchive.Create();
            TarArchive tarFile    = TarArchive.Create();

            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))
                {
                    // Get temporary date-time if possible
                    DateTime?usableDate = null;
                    if (date && !String.IsNullOrWhiteSpace(rom.Date) && DateTime.TryParse(rom.Date.Replace('\\', '/'), out DateTime dt))
                    {
                        usableDate = dt;
                    }

                    // Copy the input stream to the output
                    inputStream.Seek(0, SeekOrigin.Begin);
                    tarFile.AddEntry(rom.Name, inputStream, size: rom.Size, modified: usableDate);
                }

                // Otherwise, sort the input files and write out in the correct order
                else
                {
                    // Open the old archive for reading
                    oldTarFile = TarArchive.Open(archiveFileName);

                    // Get a list of all current entries
                    List <string> entries = oldTarFile.Entries.Select(i => i.Key).ToList();

                    // Map all inputs to index
                    Dictionary <string, int> inputIndexMap = new Dictionary <string, int>();

                    // If the old one doesn't contain the new file, then add it
                    if (!entries.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 < entries.Count; i++)
                    {
                        inputIndexMap.Add(entries[i], i);
                    }

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

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

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

                        // Get temporary date-time if possible
                        DateTime?usableDate = null;
                        if (date && !String.IsNullOrWhiteSpace(rom.Date) && DateTime.TryParse(rom.Date.Replace('\\', '/'), out DateTime dt))
                        {
                            usableDate = dt;
                        }

                        // If we have the input file, add it now
                        if (index < 0)
                        {
                            // Copy the input file to the output
                            inputStream.Seek(0, SeekOrigin.Begin);
                            tarFile.AddEntry(rom.Name, inputStream, size: rom.Size, modified: usableDate);
                        }

                        // Otherwise, copy the file from the old archive
                        else
                        {
                            // Get the stream from the original archive
                            TarArchiveEntry tae   = oldTarFile.Entries.ElementAt(index);
                            MemoryStream    entry = new MemoryStream();
                            tae.OpenEntryStream().CopyTo(entry);

                            // Copy the input stream to the output
                            tarFile.AddEntry(key, entry, size: tae.Size, modified: tae.LastModifiedTime);
                        }
                    }
                }

                // Close the output tar file
                tarFile.SaveTo(tempFile, new WriterOptions(CompressionType.None));

                success = true;
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
                success = false;
            }
            finally
            {
                inputStream.Dispose();
                tarFile.Dispose();
                oldTarFile.Dispose();
            }

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

            return(success);
        }