mirror of
https://github.com/claunia/SabreTools.git
synced 2025-12-16 19:14:27 +00:00
282 lines
8.6 KiB
C#
282 lines
8.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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namespace SabreTools.Helper
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{
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public class RomTools
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{
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#region Rom-based sorting and merging
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/// <summary>
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/// Merge an arbitrary set of ROMs based on the supplied information
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/// </summary>
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/// <param name="inroms">List of RomData objects representing the roms to be merged</param>
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/// <param name="logger">Logger object for console and/or file output</param>
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/// <returns>A List of RomData objects representing the merged roms</returns>
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public static List<Rom> Merge(List<Rom> inroms, Logger logger)
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{
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// Check for null or blank roms first
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if (inroms == null || inroms.Count == 0)
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{
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return new List<Rom>();
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}
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// Create output list
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List<Rom> outroms = new List<Rom>();
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// Then deduplicate them by checking to see if data matches previous saved roms
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foreach (Rom rom in inroms)
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{
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// If it's a nodump, add and skip
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if (rom.Nodump)
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{
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outroms.Add(rom);
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continue;
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}
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// If it's the first rom in the list, don't touch it
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if (outroms.Count != 0)
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{
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// Check if the rom is a duplicate
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DupeType dupetype = DupeType.None;
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Rom savedrom = new Rom();
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int pos = -1;
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for (int i = 0; i < outroms.Count; i++)
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{
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Rom lastrom = outroms[i];
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// Get the duplicate status
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dupetype = GetDuplicateStatus(rom, lastrom, logger);
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// If it's a duplicate, skip adding it to the output but add any missing information
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if (dupetype != DupeType.None)
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{
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savedrom = lastrom;
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pos = i;
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savedrom.HashData.CRC = (String.IsNullOrEmpty(savedrom.HashData.CRC) && !String.IsNullOrEmpty(rom.HashData.CRC) ? rom.HashData.CRC : savedrom.HashData.CRC);
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savedrom.HashData.MD5 = (String.IsNullOrEmpty(savedrom.HashData.MD5) && !String.IsNullOrEmpty(rom.HashData.MD5) ? rom.HashData.MD5 : savedrom.HashData.MD5);
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savedrom.HashData.SHA1 = (String.IsNullOrEmpty(savedrom.HashData.SHA1) && !String.IsNullOrEmpty(rom.HashData.SHA1) ? rom.HashData.SHA1 : savedrom.HashData.SHA1);
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savedrom.Dupe = dupetype;
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// If the current system has a lower ID than the previous, set the system accordingly
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if (rom.Metadata.SystemID < savedrom.Metadata.SystemID)
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{
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savedrom.Metadata.SystemID = rom.Metadata.SystemID;
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savedrom.Metadata.System = rom.Metadata.System;
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savedrom.Machine.Name = rom.Machine.Name;
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savedrom.Name = rom.Name;
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}
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// If the current source has a lower ID than the previous, set the source accordingly
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if (rom.Metadata.SourceID < savedrom.Metadata.SourceID)
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{
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savedrom.Metadata.SourceID = rom.Metadata.SourceID;
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savedrom.Metadata.Source = rom.Metadata.Source;
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savedrom.Machine.Name = rom.Machine.Name;
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savedrom.Name = rom.Name;
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}
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break;
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}
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}
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// If no duplicate is found, add it to the list
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if (dupetype == DupeType.None)
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{
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outroms.Add(rom);
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}
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// Otherwise, if a new rom information is found, add that
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else
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{
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outroms.RemoveAt(pos);
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outroms.Insert(pos, savedrom);
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}
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}
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else
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{
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outroms.Add(rom);
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}
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}
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// Then return the result
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return outroms;
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}
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/// <summary>
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/// List all duplicates found in a DAT based on a rom
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/// </summary>
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/// <param name="lastrom">Rom to use as a base</param>
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/// <param name="datdata">DAT to match against</param>
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/// <param name="logger">Logger object for console and/or file output</param>
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/// <param name="remove">True to remove matched roms from the input, false otherwise (default)</param>
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/// <returns>List of matched RomData objects</returns>
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public static List<Rom> GetDuplicates(Rom lastrom, Dat datdata, Logger logger, bool remove = false)
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{
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List<Rom> output = new List<Rom>();
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// Check for an empty rom list first
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if (datdata.Files == null || datdata.Files.Count == 0)
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{
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return output;
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}
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// Try to find duplicates
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List<string> keys = datdata.Files.Keys.ToList();
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foreach (string key in keys)
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{
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List<Rom> roms = datdata.Files[key];
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List<Rom> left = new List<Rom>();
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foreach (Rom rom in roms)
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{
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if (IsDuplicate(rom, lastrom, logger))
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{
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output.Add(rom);
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}
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else
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{
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left.Add(rom);
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}
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}
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// If we're in removal mode, replace the list with the new one
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if (remove)
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{
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datdata.Files[key] = left;
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}
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}
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return output;
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}
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/// <summary>
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/// Determine if a file is a duplicate using partial matching logic
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/// </summary>
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/// <param name="rom">Rom to check for duplicate status</param>
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/// <param name="lastrom">Rom to use as a baseline</param>
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/// <param name="logger">Logger object for console and/or file output</param>
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/// <returns>True if the roms are duplicates, false otherwise</returns>
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public static bool IsDuplicate(Rom rom, Rom lastrom, Logger logger)
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{
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bool dupefound = rom.Equals(lastrom);
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// More wonderful SHA-1 logging that has to be done
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if (rom.HashData.SHA1 == lastrom.HashData.SHA1 && rom.HashData.Size != lastrom.HashData.Size)
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{
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logger.User("SHA-1 mismatch - Hash: " + rom.HashData.SHA1);
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}
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return dupefound;
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}
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/// <summary>
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/// Return the duplicate status of two roms
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/// </summary>
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/// <param name="rom">Current rom to check</param>
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/// <param name="lastrom">Last rom to check against</param>
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/// <param name="logger">Logger object for console and/or file output</param>
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/// <returns>The DupeType corresponding to the relationship between the two</returns>
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public static DupeType GetDuplicateStatus(Rom rom, Rom lastrom, Logger logger)
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{
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DupeType output = DupeType.None;
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// If we don't have a duplicate at all, return none
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if (!IsDuplicate(rom, lastrom, logger))
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{
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return output;
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}
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// If the duplicate is external already or should be, set it
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if (lastrom.Dupe >= DupeType.ExternalHash || lastrom.Metadata.SystemID != rom.Metadata.SystemID || lastrom.Metadata.SourceID != rom.Metadata.SourceID)
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{
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if (lastrom.Machine.Name == rom.Machine.Name && lastrom.Name == rom.Name)
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{
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output = DupeType.ExternalAll;
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}
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else
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{
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output = DupeType.ExternalHash;
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}
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}
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// Otherwise, it's considered an internal dupe
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else
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{
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if (lastrom.Machine.Name == rom.Machine.Name && lastrom.Name == rom.Name)
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{
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output = DupeType.InternalAll;
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}
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else
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{
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output = DupeType.InternalHash;
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}
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}
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return output;
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}
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/// <summary>
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/// Sort a list of RomData objects by SystemID, SourceID, Game, and Name (in order)
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/// </summary>
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/// <param name="roms">List of RomData objects representing the roms to be sorted</param>
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/// <param name="norename">True if files are not renamed, false otherwise</param>
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/// <returns>True if it sorted correctly, false otherwise</returns>
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public static bool Sort(ref List<Rom> roms, bool norename)
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{
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try
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{
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roms.Sort(delegate (Rom x, Rom y)
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{
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if (x.Metadata.SystemID == y.Metadata.SystemID)
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{
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if (x.Metadata.SourceID == y.Metadata.SourceID)
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{
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if (x.Machine.Name == y.Machine.Name)
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{
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if ((x.Type == ItemType.Rom || x.Type == ItemType.Disk) && (y.Type == ItemType.Rom || y.Type == ItemType.Disk))
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{
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if (Path.GetDirectoryName(x.Name) == Path.GetDirectoryName(y.Name))
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{
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return Style.CompareNumeric((x.Name), Path.GetFileName(y.Name));
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}
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return Style.CompareNumeric(Path.GetDirectoryName(x.Name), Path.GetDirectoryName(y.Name));
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}
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else if ((x.Type == ItemType.Rom || x.Type == ItemType.Disk) && (y.Type != ItemType.Rom && y.Type != ItemType.Disk))
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{
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return -1;
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}
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else if ((x.Type != ItemType.Rom && x.Type != ItemType.Disk) && (y.Type == ItemType.Rom || y.Type == ItemType.Disk))
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{
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return 1;
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}
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else
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{
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if (Path.GetDirectoryName(x.Name) == Path.GetDirectoryName(y.Name))
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{
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return Style.CompareNumeric(Path.GetFileName(x.Name), Path.GetFileName(y.Name));
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}
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return Style.CompareNumeric(Path.GetDirectoryName(x.Name), Path.GetDirectoryName(y.Name));
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}
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}
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return Style.CompareNumeric(x.Machine.Name, y.Machine.Name);
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}
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return (norename ? Style.CompareNumeric(x.Machine.Name, y.Machine.Name) : x.Metadata.SourceID - y.Metadata.SourceID);
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}
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return (norename ? Style.CompareNumeric(x.Machine.Name, y.Machine.Name) : x.Metadata.SystemID - y.Metadata.SystemID);
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});
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return true;
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}
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catch (Exception)
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{
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// Absorb the error
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return false;
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}
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}
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#endregion
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}
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}
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