Handle more IDDB-specific places that use Machine information

SabreTools.DatFiles/DatFile.cs

@@ -226,6 +226,15 @@ namespace SabreTools.DatFiles
         /// <returns>True if the DAT was written correctly, false otherwise</returns>
         public abstract bool WriteToFile(string outfile, bool ignoreblanks = false, bool throwOnError = false);
 
+        /// <summary>
+        /// Create and open an output file for writing direct from a dictionary
+        /// </summary>
+        /// <param name="outfile">Name of the file to write to</param>
+        /// <param name="ignoreblanks">True if blank roms should be skipped on output, false otherwise (default)</param>
+        /// <param name="throwOnError">True if the error that is thrown should be thrown back to the caller, false otherwise</param>
+        /// <returns>True if the DAT was written correctly, false otherwise</returns>
+        public abstract bool WriteToFileDB(string outfile, bool ignoreblanks = false, bool throwOnError = false);
+
         /// <summary>
         /// Create a prefix or postfix from inputs
         /// </summary>
@@ -234,9 +243,15 @@ namespace SabreTools.DatFiles
         /// <returns>Sanitized string representing the postfix or prefix</returns>
         protected string CreatePrefixPostfix(DatItem item, bool prefix)
         {
+            // Get machine for the item
+            var machine = item.GetFieldValue<Machine>(DatItem.MachineKey);
+
             // Initialize strings
             string fix,
                 game = item.GetFieldValue<Machine>(DatItem.MachineKey)!.GetStringFieldValue(Models.Metadata.Machine.NameKey) ?? string.Empty,
+                manufacturer = machine!.GetStringFieldValue(Models.Metadata.Machine.ManufacturerKey) ?? string.Empty,
+                publisher = machine!.GetStringFieldValue(Models.Metadata.Machine.PublisherKey) ?? string.Empty,
+                category = machine!.GetStringFieldValue(Models.Metadata.Machine.CategoryKey) ?? string.Empty,
                 name = item.GetName() ?? item.GetStringFieldValue(Models.Metadata.DatItem.TypeKey).AsEnumValue<ItemType>().AsStringValue() ?? string.Empty,
                 crc = string.Empty,
                 md5 = string.Empty,
@@ -281,14 +296,93 @@ namespace SabreTools.DatFiles
             }
 
             // Now do bulk replacement where possible
-            var machine = item.GetFieldValue<Machine>(DatItem.MachineKey);
             fix = fix
                 .Replace("%game%", game)
                 .Replace("%machine%", game)
                 .Replace("%name%", name)
-                .Replace("%manufacturer%", machine!.GetStringFieldValue(Models.Metadata.Machine.ManufacturerKey) ?? string.Empty)
-                .Replace("%publisher%", machine!.GetStringFieldValue(Models.Metadata.Machine.PublisherKey) ?? string.Empty)
-                .Replace("%category%", machine!.GetStringFieldValue(Models.Metadata.Machine.CategoryKey) ?? string.Empty)
+                .Replace("%manufacturer%", manufacturer)
+                .Replace("%publisher%", publisher)
+                .Replace("%category%", category)
+                .Replace("%crc%", crc)
+                .Replace("%md5%", md5)
+                .Replace("%sha1%", sha1)
+                .Replace("%sha256%", sha256)
+                .Replace("%sha384%", sha384)
+                .Replace("%sha512%", sha512)
+                .Replace("%size%", size)
+                .Replace("%spamsum%", spamsum);
+
+            return fix;
+        }
+
+        /// <summary>
+        /// Create a prefix or postfix from inputs
+        /// </summary>
+        /// <param name="item">DatItem to create a prefix/postfix for</param>
+        /// <param name="prefix">True for prefix, false for postfix</param>
+        /// <returns>Sanitized string representing the postfix or prefix</returns>
+        protected string CreatePrefixPostfixDB((long, DatItem) item, bool prefix)
+        {
+            // Get machine for the item
+            var machine = ItemsDB.GetMachineForItem(item.Item1);
+
+            // Initialize strings
+            string fix,
+                game = machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey) ?? string.Empty,
+                manufacturer = machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.ManufacturerKey) ?? string.Empty,
+                publisher = machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.PublisherKey) ?? string.Empty,
+                category = machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.CategoryKey) ?? string.Empty,
+                name = item.Item2.GetName() ?? item.Item2.GetStringFieldValue(Models.Metadata.DatItem.TypeKey).AsEnumValue<ItemType>().AsStringValue() ?? string.Empty,
+                crc = string.Empty,
+                md5 = string.Empty,
+                sha1 = string.Empty,
+                sha256 = string.Empty,
+                sha384 = string.Empty,
+                sha512 = string.Empty,
+                size = string.Empty,
+                spamsum = string.Empty;
+
+            // If we have a prefix
+            if (prefix)
+                fix = Header.GetStringFieldValue(DatHeader.PrefixKey) + (Header.GetBoolFieldValue(DatHeader.QuotesKey) == true ? "\"" : string.Empty);
+
+            // If we have a postfix
+            else
+                fix = (Header.GetBoolFieldValue(DatHeader.QuotesKey) == true ? "\"" : string.Empty) + Header.GetStringFieldValue(DatHeader.PostfixKey);
+
+            // Ensure we have the proper values for replacement
+            if (item.Item2 is Disk disk)
+            {
+                md5 = disk.GetStringFieldValue(Models.Metadata.Disk.MD5Key) ?? string.Empty;
+                sha1 = disk.GetStringFieldValue(Models.Metadata.Disk.SHA1Key) ?? string.Empty;
+            }
+            else if (item.Item2 is Media media)
+            {
+                md5 = media.GetStringFieldValue(Models.Metadata.Media.MD5Key) ?? string.Empty;
+                sha1 = media.GetStringFieldValue(Models.Metadata.Media.SHA1Key) ?? string.Empty;
+                sha256 = media.GetStringFieldValue(Models.Metadata.Media.SHA256Key) ?? string.Empty;
+                spamsum = media.GetStringFieldValue(Models.Metadata.Media.SpamSumKey) ?? string.Empty;
+            }
+            else if (item.Item2 is Rom rom)
+            {
+                crc = rom.GetStringFieldValue(Models.Metadata.Rom.CRCKey) ?? string.Empty;
+                md5 = rom.GetStringFieldValue(Models.Metadata.Rom.MD5Key) ?? string.Empty;
+                sha1 = rom.GetStringFieldValue(Models.Metadata.Rom.SHA1Key) ?? string.Empty;
+                sha256 = rom.GetStringFieldValue(Models.Metadata.Rom.SHA256Key) ?? string.Empty;
+                sha384 = rom.GetStringFieldValue(Models.Metadata.Rom.SHA384Key) ?? string.Empty;
+                sha512 = rom.GetStringFieldValue(Models.Metadata.Rom.SHA512Key) ?? string.Empty;
+                size = rom.GetInt64FieldValue(Models.Metadata.Rom.SizeKey).ToString() ?? string.Empty;
+                spamsum = rom.GetStringFieldValue(Models.Metadata.Rom.SpamSumKey) ?? string.Empty;
+            }
+
+            // Now do bulk replacement where possible
+            fix = fix
+                .Replace("%game%", game)
+                .Replace("%machine%", game)
+                .Replace("%name%", name)
+                .Replace("%manufacturer%", manufacturer)
+                .Replace("%publisher%", publisher)
+                .Replace("%category%", category)
                 .Replace("%crc%", crc)
                 .Replace("%md5%", md5)
                 .Replace("%sha1%", sha1)
@@ -394,21 +488,117 @@ namespace SabreTools.DatFiles
                 Header.SetFieldValue<bool?>(DatHeader.UseRomNameKey, useRomNameBackup);
         }
 
+        /// <summary>
+        /// Process an item and correctly set the item name
+        /// </summary>
+        /// <param name="item">DatItem to update</param>
+        /// <param name="forceRemoveQuotes">True if the Quotes flag should be ignored, false otherwise</param>
+        /// <param name="forceRomName">True if the UseRomName should be always on (default), false otherwise</param>
+        protected void ProcessItemNameDB((long, DatItem) item, bool forceRemoveQuotes, bool forceRomName = true)
+        {
+            // Backup relevant values and set new ones accordingly
+            bool? quotesBackup = Header.GetBoolFieldValue(DatHeader.QuotesKey);
+            bool? useRomNameBackup = Header.GetBoolFieldValue(DatHeader.UseRomNameKey);
+            if (forceRemoveQuotes)
+                Header.SetFieldValue<bool>(DatHeader.QuotesKey, false);
+            if (forceRomName)
+                Header.SetFieldValue<bool>(DatHeader.UseRomNameKey, true);
+
+            // Get machine for the item
+            var machine = ItemsDB.GetMachineForItem(item.Item1);
+
+            // Get the name to update
+            string? name = (Header.GetBoolFieldValue(DatHeader.UseRomNameKey) == true
+                ? item.Item2.GetName()
+                : machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey)) ?? string.Empty;
+
+            // Create the proper Prefix and Postfix
+            string pre = CreatePrefixPostfixDB(item, true);
+            string post = CreatePrefixPostfixDB(item, false);
+
+            // If we're in Depot mode, take care of that instead
+            if (Header.GetFieldValue<DepotInformation?>(DatHeader.OutputDepotKey)?.IsActive == true)
+            {
+                if (item.Item2 is Disk disk)
+                {
+                    // We can only write out if there's a SHA-1
+                    if (!string.IsNullOrEmpty(disk.GetStringFieldValue(Models.Metadata.Disk.SHA1Key)))
+                    {
+                        name = Utilities.GetDepotPath(disk.GetStringFieldValue(Models.Metadata.Disk.SHA1Key), Header.GetFieldValue<DepotInformation?>(DatHeader.OutputDepotKey)!.Depth)?.Replace('\\', '/');
+                        item.Item2.SetName($"{pre}{name}{post}");
+                    }
+                }
+                else if (item.Item2 is Media media)
+                {
+                    // We can only write out if there's a SHA-1
+                    if (!string.IsNullOrEmpty(media.GetStringFieldValue(Models.Metadata.Media.SHA1Key)))
+                    {
+                        name = Utilities.GetDepotPath(media.GetStringFieldValue(Models.Metadata.Media.SHA1Key), Header.GetFieldValue<DepotInformation?>(DatHeader.OutputDepotKey)!.Depth)?.Replace('\\', '/');
+                        item.Item2.SetName($"{pre}{name}{post}");
+                    }
+                }
+                else if (item.Item2 is Rom rom)
+                {
+                    // We can only write out if there's a SHA-1
+                    if (!string.IsNullOrEmpty(rom.GetStringFieldValue(Models.Metadata.Rom.SHA1Key)))
+                    {
+                        name = Utilities.GetDepotPath(rom.GetStringFieldValue(Models.Metadata.Rom.SHA1Key), Header.GetFieldValue<DepotInformation?>(DatHeader.OutputDepotKey)!.Depth)?.Replace('\\', '/');
+                        item.Item2.SetName($"{pre}{name}{post}");
+                    }
+                }
+
+                return;
+            }
+
+            if (!string.IsNullOrEmpty(Header.GetStringFieldValue(DatHeader.ReplaceExtensionKey)) || Header.GetBoolFieldValue(DatHeader.RemoveExtensionKey) == true)
+            {
+                if (Header.GetBoolFieldValue(DatHeader.RemoveExtensionKey) == true)
+                    Header.SetFieldValue<string?>(DatHeader.ReplaceExtensionKey, string.Empty);
+
+                string? dir = Path.GetDirectoryName(name);
+                if (dir != null)
+                {
+                    dir = dir.TrimStart(Path.DirectorySeparatorChar);
+                    name = Path.Combine(dir, Path.GetFileNameWithoutExtension(name) + Header.GetStringFieldValue(DatHeader.ReplaceExtensionKey));
+                }
+            }
+
+            if (!string.IsNullOrEmpty(Header.GetStringFieldValue(DatHeader.AddExtensionKey)))
+                name += Header.GetStringFieldValue(DatHeader.AddExtensionKey);
+
+            if (Header.GetBoolFieldValue(DatHeader.UseRomNameKey) == true && Header.GetBoolFieldValue(DatHeader.GameNameKey) == true)
+                name = Path.Combine(machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey) ?? string.Empty, name);
+
+            // Now assign back the formatted name
+            name = $"{pre}{name}{post}";
+            if (Header.GetBoolFieldValue(DatHeader.UseRomNameKey) == true)
+                item.Item2.SetName(name);
+            else if (machine.Item2 != null)
+                machine.Item2.SetFieldValue<string?>(Models.Metadata.Machine.NameKey, name);
+
+            // Restore all relevant values
+            if (forceRemoveQuotes)
+                Header.SetFieldValue<bool?>(DatHeader.QuotesKey, quotesBackup);
+
+            if (forceRomName)
+                Header.SetFieldValue<bool?>(DatHeader.UseRomNameKey, useRomNameBackup);
+        }
+
         /// <summary>
         /// Process any DatItems that are "null", usually created from directory population
         /// </summary>
-        /// <param name="datItem">DatItem to check for "null" status</param>
+        /// <param name="item">DatItem to check for "null" status</param>
         /// <returns>Cleaned DatItem</returns>
-        protected DatItem ProcessNullifiedItem(DatItem datItem)
+        protected DatItem ProcessNullifiedItem(DatItem item)
         {
             // If we don't have a Rom, we can ignore it
-            if (datItem is not Rom rom)
-                return datItem;
+            if (item is not Rom rom)
+                return item;
 
             // If the Rom has "null" characteristics, ensure all fields
             if (rom.GetInt64FieldValue(Models.Metadata.Rom.SizeKey) == null && rom.GetStringFieldValue(Models.Metadata.Rom.CRCKey) == "null")
             {
-                logger.Verbose($"Empty folder found: {datItem.GetFieldValue<Machine>(DatItem.MachineKey)!.GetStringFieldValue(Models.Metadata.Machine.NameKey)}");
+                logger.Verbose($"Empty folder found: {item.GetFieldValue<Machine>(DatItem.MachineKey)!.GetStringFieldValue(Models.Metadata.Machine.NameKey)}");
 
                 rom.SetName(rom.GetName() == "null" ? "-" : rom.GetName());
                 rom.SetFieldValue<string?>(Models.Metadata.Rom.SizeKey, Constants.SizeZero.ToString());
@@ -427,18 +617,21 @@ namespace SabreTools.DatFiles
         /// <summary>
         /// Process any DatItems that are "null", usually created from directory population
         /// </summary>
-        /// <param name="datItem">DatItem to check for "null" status</param>
+        /// <param name="item">DatItem to check for "null" status</param>
         /// <returns>Cleaned DatItem</returns>
-        protected (long, DatItem) ProcessNullifiedItem((long, DatItem) datItem)
+        protected (long, DatItem) ProcessNullifiedItem((long, DatItem) item)
         {
             // If we don't have a Rom, we can ignore it
-            if (datItem.Item2 is not Rom rom)
-                return datItem;
+            if (item.Item2 is not Rom rom)
+                return item;
+
+            // Get machine for the item
+            var machine = ItemsDB.GetMachineForItem(item.Item1);
 
             // If the Rom has "null" characteristics, ensure all fields
             if (rom.GetInt64FieldValue(Models.Metadata.Rom.SizeKey) == null && rom.GetStringFieldValue(Models.Metadata.Rom.CRCKey) == "null")
             {
-                logger.Verbose($"Empty folder found: {datItem.Item2.GetFieldValue<Machine>(DatItem.MachineKey)!.GetStringFieldValue(Models.Metadata.Machine.NameKey)}");
+                logger.Verbose($"Empty folder found: {machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey)}");
 
                 rom.SetName(rom.GetName() == "null" ? "-" : rom.GetName());
                 rom.SetFieldValue<string?>(Models.Metadata.Rom.SizeKey, Constants.SizeZero.ToString());
@@ -451,7 +644,7 @@ namespace SabreTools.DatFiles
                 rom.SetFieldValue<string?>(Models.Metadata.Rom.SpamSumKey, rom.GetStringFieldValue(Models.Metadata.Rom.SpamSumKey) == "null" ? Constants.SpamSumZero : null);
             }
 
-            return (datItem.Item1, rom);
+            return (item.Item1, rom);
         }
 
         /// <summary>

SabreTools.DatFiles/Formats/Missfile.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Linq;
 using System.Text;
 using SabreTools.Core;
 using SabreTools.DatItems;
@@ -96,6 +97,68 @@ namespace SabreTools.DatFiles.Formats
             return true;
         }
 
+        /// <inheritdoc/>
+        public override bool WriteToFileDB(string outfile, bool ignoreblanks = false, bool throwOnError = false)
+        {
+            try
+            {
+                logger.User($"Writing to '{outfile}'...");
+                FileStream fs = File.Create(outfile);
+
+                // If we get back null for some reason, just log and return
+                if (fs == null)
+                {
+                    logger.Warning($"File '{outfile}' could not be created for writing! Please check to see if the file is writable");
+                    return false;
+                }
+
+                StreamWriter sw = new(fs, new UTF8Encoding(false));
+
+                // Write out each of the machines and roms
+                string? lastgame = null;
+
+                // Use a sorted list of games to output
+                foreach (string key in ItemsDB.SortedKeys)
+                {
+                    // If this machine doesn't contain any writable items, skip
+                    var items = ItemsDB.GetItemsForBucket(key, filter: true);
+                    if (items == null || !ContainsWritable(items))
+                        continue;
+
+                    // Resolve the names in the block
+                    items = DatItem.ResolveNamesDB(items.ToConcurrentList()).ToArray();
+
+                    for (int index = 0; index < items.Length; index++)
+                    {
+                        // Check for a "null" item
+                        var datItem = items[index];
+                        datItem = ProcessNullifiedItem(datItem);
+
+                        // Get the machine for the item
+                        var machine = ItemsDB.GetMachineForItem(datItem.Item1);
+
+                        // Write out the item if we're using machine names or we're not ignoring
+                        if (!Header.GetBoolFieldValue(DatHeader.UseRomNameKey) == true || !ShouldIgnore(datItem, ignoreblanks))
+                            WriteDatItemDB(sw, datItem, lastgame);
+
+                        // Set the new data to compare against
+                        lastgame = machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey);
+                    }
+                }
+
+                logger.User($"'{outfile}' written!{Environment.NewLine}");
+                sw.Dispose();
+                fs.Dispose();
+            }
+            catch (Exception ex) when (!throwOnError)
+            {
+                logger.Error(ex);
+                return false;
+            }
+
+            return true;
+        }
+
         /// <summary>
         /// Write out DatItem using the supplied StreamWriter
         /// </summary>
@@ -115,5 +178,28 @@ namespace SabreTools.DatFiles.Formats
 
             sw.Flush();
         }
+
+        /// <summary>
+        /// Write out DatItem using the supplied StreamWriter
+        /// </summary>
+        /// <param name="sw">StreamWriter to output to</param>
+        /// <param name="datItem">DatItem object to be output</param>
+        /// <param name="lastgame">The name of the last game to be output</param>
+        private void WriteDatItemDB(StreamWriter sw, (long, DatItem) datItem, string? lastgame)
+        {
+            // Get the machine for the item
+            var machine = ItemsDB.GetMachineForItem(datItem.Item1);
+
+            // Process the item name
+            ProcessItemNameDB(datItem, false, forceRomName: false);
+
+            // Romba mode automatically uses item name
+            if (Header.GetFieldValue<DepotInformation?>(DatHeader.OutputDepotKey)?.IsActive == true || Header.GetBoolFieldValue(DatHeader.UseRomNameKey) == true)
+                sw.Write($"{datItem.Item2.GetName() ?? string.Empty}\n");
+            else if (!Header.GetBoolFieldValue(DatHeader.UseRomNameKey) == true && machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey) != lastgame)
+                sw.Write($"{machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey) ?? string.Empty}\n");
+
+            sw.Flush();
+        }
     }
 }

SabreTools.DatFiles/Formats/SabreJSON.cs

@@ -442,6 +442,89 @@ namespace SabreTools.DatFiles.Formats
             return true;
         }
 
+        /// <inheritdoc/>
+        public override bool WriteToFileDB(string outfile, bool ignoreblanks = false, bool throwOnError = false)
+        {
+            try
+            {
+                logger.User($"Writing to '{outfile}'...");
+                FileStream fs = System.IO.File.Create(outfile);
+
+                // If we get back null for some reason, just log and return
+                if (fs == null)
+                {
+                    logger.Warning($"File '{outfile}' could not be created for writing! Please check to see if the file is writable");
+                    return false;
+                }
+
+                StreamWriter sw = new(fs, new UTF8Encoding(false));
+                JsonTextWriter jtw = new(sw)
+                {
+                    Formatting = Formatting.Indented,
+                    IndentChar = '\t',
+                    Indentation = 1
+                };
+
+                // Write out the header
+                WriteHeader(jtw);
+
+                // Write out each of the machines and roms
+                string? lastgame = null;
+
+                // Use a sorted list of games to output
+                foreach (string key in ItemsDB.SortedKeys)
+                {
+                    // If this machine doesn't contain any writable items, skip
+                    var items = ItemsDB.GetItemsForBucket(key, filter: true);
+                    if (items == null || !ContainsWritable(items))
+                        continue;
+
+                    // Resolve the names in the block
+                    items = DatItem.ResolveNamesDB(items.ToConcurrentList()).ToArray();
+
+                    for (int index = 0; index < items.Length; index++)
+                    {
+                        var datItem = items[index];
+
+                        // Get the machine for the item
+                        var machine = ItemsDB.GetMachineForItem(datItem.Item1);
+
+                        // If we have a different game and we're not at the start of the list, output the end of last item
+                        if (lastgame != null && !string.Equals(lastgame, machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey), StringComparison.OrdinalIgnoreCase))
+                            SabreJSON.WriteEndGame(jtw);
+
+                        // If we have a new game, output the beginning of the new item
+                        if (lastgame == null || !string.Equals(lastgame, machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey), StringComparison.OrdinalIgnoreCase))
+                            WriteStartGameDB(jtw, datItem);
+
+                        // Check for a "null" item
+                        datItem = ProcessNullifiedItem(datItem);
+
+                        // Write out the item if we're not ignoring
+                        if (!ShouldIgnore(datItem, ignoreblanks))
+                            WriteDatItemDB(jtw, datItem);
+
+                        // Set the new data to compare against
+                        lastgame = machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey);
+                    }
+                }
+
+                // Write the file footer out
+                SabreJSON.WriteFooter(jtw);
+
+                logger.User($"'{outfile}' written!{Environment.NewLine}");
+                jtw.Close();
+                fs.Dispose();
+            }
+            catch (Exception ex) when (!throwOnError)
+            {
+                logger.Error(ex);
+                return false;
+            }
+
+            return true;
+        }
+
         /// <summary>
         /// Write out DAT header using the supplied JsonTextWriter
         /// </summary>
@@ -486,6 +569,34 @@ namespace SabreTools.DatFiles.Formats
             jtw.Flush();
         }
 
+        /// <summary>
+        /// Write out Game start using the supplied JsonTextWriter
+        /// </summary>
+        /// <param name="jtw">JsonTextWriter to output to</param>
+        /// <param name="datItem">DatItem object to be output</param>
+        private void WriteStartGameDB(JsonTextWriter jtw, (long, DatItem) datItem)
+        {
+            // Get the machine for the item
+            var machine = ItemsDB.GetMachineForItem(datItem.Item1);
+
+            // No game should start with a path separator
+            if (!string.IsNullOrEmpty(machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey)))
+                machine.Item2!.SetFieldValue<string?>(Models.Metadata.Machine.NameKey, machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey)!.TrimStart(Path.DirectorySeparatorChar));
+
+            // Build the state
+            jtw.WriteStartObject();
+
+            // Write the Machine
+            jtw.WritePropertyName("machine");
+            JsonSerializer js = new() { Formatting = Formatting.Indented };
+            js.Serialize(jtw, machine.Item2!);
+
+            jtw.WritePropertyName("items");
+            jtw.WriteStartArray();
+
+            jtw.Flush();
+        }
+
         /// <summary>
         /// Write out Game end using the supplied JsonTextWriter
         /// </summary>
@@ -525,6 +636,30 @@ namespace SabreTools.DatFiles.Formats
             jtw.Flush();
         }
 
+        /// <summary>
+        /// Write out DatItem using the supplied JsonTextWriter
+        /// </summary>
+        /// <param name="jtw">JsonTextWriter to output to</param>
+        /// <param name="datItem">DatItem object to be output</param>
+        private void WriteDatItemDB(JsonTextWriter jtw, (long, DatItem) datItem)
+        {
+            // Pre-process the item name
+            ProcessItemNameDB(datItem, true);
+
+            // Build the state
+            jtw.WriteStartObject();
+
+            // Write the DatItem
+            jtw.WritePropertyName("datitem");
+            JsonSerializer js = new() { ContractResolver = new BaseFirstContractResolver(), Formatting = Formatting.Indented };
+            js.Serialize(jtw, datItem.Item2);
+
+            // End item
+            jtw.WriteEndObject();
+
+            jtw.Flush();
+        }
+
         /// <summary>
         /// Write out DAT footer using the supplied JsonTextWriter
         /// </summary>

SabreTools.DatFiles/Formats/SabreXML.cs

@@ -1,5 +1,6 @@
 using System;
 using System.IO;
+using System.Linq;
 using System.Text;
 using System.Xml;
 using System.Xml.Schema;
@@ -272,6 +273,90 @@ namespace SabreTools.DatFiles.Formats
             return true;
         }
 
+        /// <inheritdoc/>
+        public override bool WriteToFileDB(string outfile, bool ignoreblanks = false, bool throwOnError = false)
+        {
+            try
+            {
+                logger.User($"Writing to '{outfile}'...");
+                FileStream fs = File.Create(outfile);
+
+                // If we get back null for some reason, just log and return
+                if (fs == null)
+                {
+                    logger.Warning($"File '{outfile}' could not be created for writing! Please check to see if the file is writable");
+                    return false;
+                }
+
+                XmlTextWriter xtw = new(fs, new UTF8Encoding(false))
+                {
+                    Formatting = Formatting.Indented,
+                    IndentChar = '\t',
+                    Indentation = 1,
+                };
+
+                // Write out the header
+                WriteHeader(xtw);
+
+                // Write out each of the machines and roms
+                string? lastgame = null;
+
+                // Use a sorted list of games to output
+                foreach (string key in ItemsDB.SortedKeys)
+                {
+                    // If this machine doesn't contain any writable items, skip
+                    var items = ItemsDB.GetItemsForBucket(key, filter: true);
+                    if (items == null || !ContainsWritable(items))
+                        continue;
+
+                    // Resolve the names in the block
+                    items = DatItem.ResolveNamesDB(items.ToConcurrentList()).ToArray();
+
+                    for (int index = 0; index < items.Length; index++)
+                    {
+                        var datItem = items[index];
+
+                        // Get the machine for the item
+                        var machine = ItemsDB.GetMachineForItem(datItem.Item1);
+
+                        // If we have a different game and we're not at the start of the list, output the end of last item
+                        if (lastgame != null && !string.Equals(lastgame, machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey), StringComparison.OrdinalIgnoreCase))
+                            WriteEndGame(xtw);
+
+                        // If we have a new game, output the beginning of the new item
+                        if (lastgame == null || !string.Equals(lastgame, machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey), StringComparison.OrdinalIgnoreCase))
+                            WriteStartGameDB(xtw, datItem);
+
+                        // Check for a "null" item
+                        datItem = ProcessNullifiedItem(datItem);
+
+                        // Write out the item if we're not ignoring
+                        if (!ShouldIgnore(datItem, ignoreblanks))
+                            WriteDatItemDB(xtw, datItem);
+
+                        // Set the new data to compare against
+                        lastgame = machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey);
+                    }
+                }
+
+                // Write the file footer out
+                WriteFooter(xtw);
+
+                logger.User($"'{outfile}' written!{Environment.NewLine}");
+#if NET452_OR_GREATER
+                xtw.Dispose();
+#endif
+                fs.Dispose();
+            }
+            catch (Exception ex) when (!throwOnError)
+            {
+                logger.Error(ex);
+                return false;
+            }
+
+            return true;
+        }
+
         /// <summary>
         /// Write out DAT header using the supplied StreamWriter
         /// </summary>
@@ -314,6 +399,31 @@ namespace SabreTools.DatFiles.Formats
             xtw.Flush();
         }
 
+        /// <summary>
+        /// Write out Game start using the supplied StreamWriter
+        /// </summary>
+        /// <param name="xtw">XmlTextWriter to output to</param>
+        /// <param name="datItem">DatItem object to be output</param>
+        private void WriteStartGameDB(XmlTextWriter xtw, (long, DatItem) datItem)
+        {
+            // Get the machine for the item
+            var machine = ItemsDB.GetMachineForItem(datItem.Item1);
+
+            // No game should start with a path separator
+            machine.Item2!.SetFieldValue<string?>(Models.Metadata.Machine.NameKey, machine.Item2!.GetStringFieldValue(Models.Metadata.Machine.NameKey)?.TrimStart(Path.DirectorySeparatorChar) ?? string.Empty);
+
+            // Write the machine
+            xtw.WriteStartElement("directory");
+            XmlSerializer xs = new(typeof(Machine));
+            XmlSerializerNamespaces ns = new();
+            ns.Add("", "");
+            xs.Serialize(xtw, machine.Item2, ns);
+
+            xtw.WriteStartElement("files");
+
+            xtw.Flush();
+        }
+
         /// <summary>
         /// Write out Game start using the supplied StreamWriter
         /// </summary>
@@ -348,6 +458,25 @@ namespace SabreTools.DatFiles.Formats
             xtw.Flush();
         }
 
+        /// <summary>
+        /// Write out DatItem using the supplied StreamWriter
+        /// </summary>
+        /// <param name="xtw">XmlTextWriter to output to</param>
+        /// <param name="datItem">DatItem object to be output</param>
+        private void WriteDatItemDB(XmlTextWriter xtw, (long, DatItem) datItem)
+        {
+            // Pre-process the item name
+            ProcessItemNameDB(datItem, true);
+
+            // Write the DatItem
+            XmlSerializer xs = new(typeof(DatItem));
+            XmlSerializerNamespaces ns = new();
+            ns.Add("", "");
+            xs.Serialize(xtw, datItem.Item2, ns);
+
+            xtw.Flush();
+        }
+
         /// <summary>
         /// Write out DAT footer using the supplied StreamWriter
         /// </summary>

SabreTools.DatFiles/SerializableDatFile.cs

@@ -61,5 +61,31 @@ namespace SabreTools.DatFiles
             logger.User($"'{outfile}' written!{Environment.NewLine}");
             return true;
         }
+
+        /// <inheritdoc/>
+        public override bool WriteToFileDB(string outfile, bool ignoreblanks = false, bool throwOnError = false)
+        {
+            try
+            {
+                logger.User($"Writing to '{outfile}'...");
+
+                // Serialize the input file in two steps
+                var internalFormat = ConvertMetadata(ignoreblanks);
+                var specificFormat = Activator.CreateInstance<V>().Deserialize(internalFormat);
+                if (!Activator.CreateInstance<U>().Serialize(specificFormat, outfile))
+                {
+                    logger.Warning($"File '{outfile}' could not be written! See the log for more details.");
+                    return false;
+                }
+            }
+            catch (Exception ex) when (!throwOnError)
+            {
+                logger.Error(ex);
+                return false;
+            }
+
+            logger.User($"'{outfile}' written!{Environment.NewLine}");
+            return true;
+        }
     }
 }