Files
SabreTools/SabreTools.Library/DatFiles/Filter.cs
2019-01-08 17:40:28 -08:00

541 lines
19 KiB
C#

using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using SabreTools.Library.Data;
using SabreTools.Library.DatItems;
#if MONO
using System.IO;
#else
using Alphaleonis.Win32.Filesystem;
#endif
namespace SabreTools.Library.DatFiles
{
/// <summary>
/// Represents the filtering operations that need to be performed on a set of items, usually a DAT
/// </summary>
public class Filter
{
#region Pubically facing variables
#region Positive
public List<string> MachineNames { get; set; } = new List<string>();
public List<string> MachineDescriptions { get; set; } = new List<string>();
public List<string> ItemNames { get; set; } = new List<string>();
public List<string> ItemTypes { get; set; } = new List<string>();
public List<string> CRCs { get; set; } = new List<string>();
public List<string> MD5s { get; set; } = new List<string>();
public List<string> SHA1s { get; set; } = new List<string>();
public List<string> SHA256s { get; set; } = new List<string>();
public List<string> SHA384s { get; set; } = new List<string>();
public List<string> SHA512s { get; set; } = new List<string>();
public ItemStatus ItemStatuses { get; set; } = ItemStatus.NULL;
public MachineType MachineTypes { get; set; } = MachineType.NULL;
#endregion
#region Negative
public List<string> NotMachineNames { get; set; } = new List<string>();
public List<string> NotMachineDescriptions { get; set; } = new List<string>();
public List<string> NotItemNames { get; set; } = new List<string>();
public List<string> NotItemTypes { get; set; } = new List<string>();
public List<string> NotCRCs { get; set; } = new List<string>();
public List<string> NotMD5s { get; set; } = new List<string>();
public List<string> NotSHA1s { get; set; } = new List<string>();
public List<string> NotSHA256s { get; set; } = new List<string>();
public List<string> NotSHA384s { get; set; } = new List<string>();
public List<string> NotSHA512s { get; set; } = new List<string>();
public ItemStatus NotItemStatuses { get; set; } = ItemStatus.NULL;
public MachineType NotMachineTypes { get; set; } = MachineType.NULL;
#endregion
#region Neutral
public long SizeGreaterThanOrEqual { get; set; } = -1;
public long SizeLessThanOrEqual { get; set; } = -1;
public long SizeEqualTo { get; set; } = -1;
public bool IncludeOfInGame { get; set; } = false;
public bool? Runnable { get; set; } = null;
public bool Single { get; set; } = false;
public bool Trim { get; set; } = false;
public string Root { get; set; } = null;
#endregion
#endregion // Pubically facing variables
#region Instance methods
/// <summary>
/// Filter a DatFile using the inputs
/// </summary>
/// <param name="datFile"></param>
/// <returns>True if the DatFile was filtered, false on error</returns>
public bool FilterDatFile(DatFile datFile)
{
try
{
// Loop over every key in the dictionary
List<string> keys = datFile.Keys;
foreach (string key in keys)
{
// For every item in the current key
List<DatItem> items = datFile[key];
List<DatItem> newitems = new List<DatItem>();
foreach (DatItem item in items)
{
// If the rom passes the filter, include it
if (ItemPasses(item))
{
// If we are in single game mode, rename all games
if (this.Single)
{
item.MachineName = "!";
}
// If we are in NTFS trim mode, trim the game name
if (this.Trim)
{
// Windows max name length is 260
int usableLength = 260 - item.MachineName.Length - this.Root.Length;
if (item.Name.Length > usableLength)
{
string ext = Path.GetExtension(item.Name);
item.Name = item.Name.Substring(0, usableLength - ext.Length);
item.Name += ext;
}
}
// Lock the list and add the item back
lock (newitems)
{
newitems.Add(item);
}
}
}
datFile.Remove(key);
datFile.AddRange(key, newitems);
}
}
catch (Exception ex)
{
Globals.Logger.Error(ex.ToString());
return false;
}
return true;
}
/// <summary>
/// Check to see if a DatItem passes the filter
/// </summary>
/// <param name="item">DatItem to check</param>
/// <returns>True if the file passed the filter, false otherwise</returns>
public bool ItemPasses(DatItem item)
{
// If the item is null, we automatically fail it
if (item == null)
{
return false;
}
// Filter on machine type
if (this.MachineTypes != MachineType.NULL && (item.MachineType & this.MachineTypes) == 0)
{
return false;
}
if (this.NotMachineTypes != MachineType.NULL && (item.MachineType & this.NotMachineTypes) != 0)
{
return false;
}
// Filter on machine runability
if (this.Runnable != null && item.Runnable != this.Runnable)
{
return false;
}
// Take care of Rom and Disk specific differences
if (item.ItemType == ItemType.Rom)
{
Rom rom = (Rom)item;
// Filter on status
if (this.ItemStatuses != ItemStatus.NULL && (rom.ItemStatus & this.ItemStatuses) == 0)
{
return false;
}
if (this.NotItemStatuses != ItemStatus.NULL && (rom.ItemStatus & this.NotItemStatuses) != 0)
{
return false;
}
// Filter on rom size
if (this.SizeEqualTo != -1 && rom.Size != this.SizeEqualTo)
{
return false;
}
else
{
if (this.SizeGreaterThanOrEqual != -1 && rom.Size < this.SizeGreaterThanOrEqual)
{
return false;
}
if (this.SizeLessThanOrEqual != -1 && rom.Size > this.SizeLessThanOrEqual)
{
return false;
}
}
// Filter on CRC
if (this.CRCs.Count > 0)
{
// If the CRC isn't in the list, return false
if (!FindValueInList(this.CRCs, rom.CRC))
{
return false;
}
}
if (this.NotCRCs.Count > 0)
{
// If the CRC is in the list, return false
if (FindValueInList(this.NotCRCs, rom.CRC))
{
return false;
}
}
// Filter on MD5
if (this.MD5s.Count > 0)
{
// If the MD5 isn't in the list, return false
if (!FindValueInList(this.MD5s, rom.MD5))
{
return false;
}
}
if (this.NotMD5s.Count > 0)
{
// If the MD5 is in the list, return false
if (FindValueInList(this.NotMD5s, rom.MD5))
{
return false;
}
}
// Filter on SHA-1
if (this.SHA1s.Count > 0)
{
// If the SHA-1 isn't in the list, return false
if (!FindValueInList(this.SHA1s, rom.SHA1))
{
return false;
}
}
if (this.NotSHA1s.Count > 0)
{
// If the SHA-1 is in the list, return false
if (FindValueInList(this.NotSHA1s, rom.SHA1))
{
return false;
}
}
// Filter on SHA-256
if (this.SHA256s.Count > 0)
{
// If the SHA-256 isn't in the list, return false
if (!FindValueInList(this.SHA256s, rom.SHA256))
{
return false;
}
}
if (this.NotSHA256s.Count > 0)
{
// If the SHA-256 is in the list, return false
if (FindValueInList(this.NotSHA256s, rom.SHA256))
{
return false;
}
}
// Filter on SHA-384
if (this.SHA384s.Count > 0)
{
// If the SHA-384 isn't in the list, return false
if (!FindValueInList(this.SHA384s, rom.SHA384))
{
return false;
}
}
if (this.NotSHA384s.Count > 0)
{
// If the SHA-384 is in the list, return false
if (FindValueInList(this.NotSHA384s, rom.SHA384))
{
return false;
}
}
// Filter on SHA-512
if (this.SHA512s.Count > 0)
{
// If the SHA-512 isn't in the list, return false
if (!FindValueInList(this.SHA512s, rom.SHA512))
{
return false;
}
}
if (this.NotSHA512s.Count > 0)
{
// If the SHA-512 is in the list, return false
if (FindValueInList(this.NotSHA512s, rom.SHA512))
{
return false;
}
}
}
else if (item.ItemType == ItemType.Disk)
{
Disk rom = (Disk)item;
// Filter on status
if (this.ItemStatuses != ItemStatus.NULL && (rom.ItemStatus & this.ItemStatuses) == 0)
{
return false;
}
if (this.NotItemStatuses != ItemStatus.NULL && (rom.ItemStatus & this.NotItemStatuses) != 0)
{
return false;
}
// Filter on MD5
if (this.MD5s.Count > 0)
{
// If the MD5 isn't in the list, return false
if (!FindValueInList(this.MD5s, rom.MD5))
{
return false;
}
}
if (this.NotMD5s.Count > 0)
{
// If the MD5 is in the list, return false
if (FindValueInList(this.NotMD5s, rom.MD5))
{
return false;
}
}
// Filter on SHA-1
if (this.SHA1s.Count > 0)
{
// If the SHA-1 isn't in the list, return false
if (!FindValueInList(this.SHA1s, rom.SHA1))
{
return false;
}
}
if (this.NotSHA1s.Count > 0)
{
// If the SHA-1 is in the list, return false
if (FindValueInList(this.NotSHA1s, rom.SHA1))
{
return false;
}
}
// Filter on SHA-256
if (this.SHA256s.Count > 0)
{
// If the SHA-256 isn't in the list, return false
if (!FindValueInList(this.SHA256s, rom.SHA256))
{
return false;
}
}
if (this.NotSHA256s.Count > 0)
{
// If the SHA-256 is in the list, return false
if (FindValueInList(this.NotSHA256s, rom.SHA256))
{
return false;
}
}
// Filter on SHA-384
if (this.SHA384s.Count > 0)
{
// If the SHA-384 isn't in the list, return false
if (!FindValueInList(this.SHA384s, rom.SHA384))
{
return false;
}
}
if (this.NotSHA384s.Count > 0)
{
// If the SHA-384 is in the list, return false
if (FindValueInList(this.NotSHA384s, rom.SHA384))
{
return false;
}
}
// Filter on SHA-512
if (this.SHA512s.Count > 0)
{
// If the SHA-512 isn't in the list, return false
if (!FindValueInList(this.SHA512s, rom.SHA512))
{
return false;
}
}
if (this.NotSHA512s.Count > 0)
{
// If the SHA-512 is in the list, return false
if (FindValueInList(this.NotSHA512s, rom.SHA512))
{
return false;
}
}
}
// Filter on machine name
if (this.MachineNames.Count > 0)
{
bool found = FindValueInList(this.MachineNames, item.MachineName);
// If we are checking CloneOf and RomOf, add them in as well
if (this.IncludeOfInGame)
{
found |= FindValueInList(this.MachineNames, item.CloneOf);
found |= FindValueInList(this.MachineNames, item.RomOf);
}
// If the game name was not found in the list, return false
if (!found)
{
return false;
}
}
if (this.NotMachineNames.Count > 0)
{
bool found = FindValueInList(this.NotMachineNames, item.MachineName);
// If we are checking CloneOf and RomOf, add them in as well
if (this.IncludeOfInGame)
{
found |= FindValueInList(this.NotMachineNames, item.CloneOf);
found |= FindValueInList(this.NotMachineNames, item.RomOf);
}
// If the machine name was found in the list, return false
if (found)
{
return false;
}
}
// Filter on machine description
if (this.MachineDescriptions.Count > 0)
{
bool found = FindValueInList(this.MachineDescriptions, item.MachineDescription);
// If the machine description was not found in the list, return false
if (!found)
{
return false;
}
}
if (this.NotMachineDescriptions.Count > 0)
{
bool found = FindValueInList(this.NotMachineDescriptions, item.MachineDescription);
// If the machine description was found in the list, return false
if (found)
{
return false;
}
}
// Filter on item name
if (this.ItemNames.Count > 0)
{
// If the item name was not found in the list, return false
if (!FindValueInList(this.ItemNames, item.Name))
{
return false;
}
}
if (this.NotItemNames.Count > 0)
{
// If the item name was found in the list, return false
if (FindValueInList(this.NotItemNames, item.Name))
{
return false;
}
}
// Filter on item type
if (this.ItemTypes.Count == 0 && this.NotItemTypes.Count == 0 && item.ItemType != ItemType.Rom && item.ItemType != ItemType.Disk && item.ItemType != ItemType.Blank)
{
return false;
}
if (this.ItemTypes.Count > 0)
{
// If the item type was not found in the list, return false
if (!FindValueInList(this.ItemTypes, item.ItemType.ToString()))
{
return false;
}
}
if (this.NotItemTypes.Count > 0)
{
// If the item type was found in the list, return false
if (FindValueInList(this.NotItemTypes, item.ItemType.ToString()))
{
return false;
}
}
return true;
}
/// <summary>
/// Generic code to check if a specific value is in the list given
/// </summary>
/// <param name="haystack">List to search for the value in</param>
/// <param name="needle">Value to search the list for</param>
/// <returns>True if the value could be found, false otherwise</returns>
private bool FindValueInList(List<string> haystack, string needle)
{
bool found = false;
foreach (string straw in haystack)
{
if (!String.IsNullOrWhiteSpace(straw))
{
string regexStraw = straw;
// If the straw has no special characters at all, treat it as an exact match
if (regexStraw == Regex.Escape(regexStraw))
{
regexStraw = "^" + regexStraw + "$";
}
// Check if a match is found with the regex
found |= Regex.IsMatch(needle, regexStraw, RegexOptions.IgnoreCase | RegexOptions.CultureInvariant);
}
}
return found;
}
#endregion
}
}