525 lines
22 KiB
C#
525 lines
22 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using System.IO;
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using System;
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using ES3Types;
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using UnityEngine;
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using ES3Internal;
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using System.Linq;
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/// <summary>Represents a cached file which can be saved to and loaded from, and commited to storage when necessary.</summary>
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public class ES3File
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{
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[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
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public static Dictionary<string, ES3File> cachedFiles = new Dictionary<string, ES3File>();
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public ES3Settings settings;
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private Dictionary<string, ES3Data> cache = new Dictionary<string, ES3Data>();
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private bool syncWithFile = false;
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private DateTime timestamp = DateTime.UtcNow;
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/// <summary>Creates a new ES3File and loads the default file into the ES3File if there is data to load.</summary>
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public ES3File() : this(new ES3Settings(), true) { }
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/// <summary>Creates a new ES3File and loads the specified file into the ES3File if there is data to load.</summary>
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/// <param name="filepath">The relative or absolute path of the file in storage our ES3File is associated with.</param>
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public ES3File(string filePath) : this(new ES3Settings(filePath), true) { }
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/// <summary>Creates a new ES3File and loads the specified file into the ES3File if there is data to load.</summary>
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/// <param name="filepath">The relative or absolute path of the file in storage our ES3File is associated with.</param>
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/// <param name="settings">The settings we want to use to override the default settings.</param>
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public ES3File(string filePath, ES3Settings settings) : this(new ES3Settings(filePath, settings), true) { }
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/// <summary>Creates a new ES3File and loads the specified file into the ES3File if there is data to load.</summary>
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/// <param name="settings">The settings we want to use to override the default settings.</param>
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public ES3File(ES3Settings settings) : this(settings, true) { }
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/// <summary>Creates a new ES3File and only loads the default file into it if syncWithFile is set to true.</summary>
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/// <param name="syncWithFile">Whether we should sync this ES3File with the one in storage immediately after creating it.</param>
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public ES3File(bool syncWithFile) : this(new ES3Settings(), syncWithFile) { }
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/// <summary>Creates a new ES3File and only loads the specified file into it if syncWithFile is set to true.</summary>
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/// <param name="filepath">The relative or absolute path of the file in storage our ES3File is associated with.</param>
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/// <param name="syncWithFile">Whether we should sync this ES3File with the one in storage immediately after creating it.</param>
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public ES3File(string filePath, bool syncWithFile) : this(new ES3Settings(filePath), syncWithFile) { }
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/// <summary>Creates a new ES3File and only loads the specified file into it if syncWithFile is set to true.</summary>
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/// <param name="filepath">The relative or absolute path of the file in storage our ES3File is associated with.</param>
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/// <param name="settings">The settings we want to use to override the default settings.</param>
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/// <param name="syncWithFile">Whether we should sync this ES3File with the one in storage immediately after creating it.</param>
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public ES3File(string filePath, ES3Settings settings, bool syncWithFile) : this(new ES3Settings(filePath, settings), syncWithFile) { }
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/// <summary>Creates a new ES3File and loads the specified file into the ES3File if there is data to load.</summary>
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/// <param name="settings">The settings we want to use to override the default settings.</param>
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/// <param name="syncWithFile">Whether we should sync this ES3File with the one in storage immediately after creating it.</param>
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public ES3File(ES3Settings settings, bool syncWithFile)
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{
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this.settings = settings;
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this.syncWithFile = syncWithFile;
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if (syncWithFile)
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{
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// Type checking must be enabled when syncing.
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var settingsWithTypeChecking = (ES3Settings)settings.Clone();
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settingsWithTypeChecking.typeChecking = true;
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using (var reader = ES3Reader.Create(settingsWithTypeChecking))
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{
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if (reader == null)
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return;
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foreach (KeyValuePair<string, ES3Data> kvp in reader.RawEnumerator)
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cache[kvp.Key] = kvp.Value;
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}
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timestamp = ES3.GetTimestamp(settingsWithTypeChecking);
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}
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}
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/// <summary>Creates a new ES3File and loads the bytes into the ES3File. Note the bytes must represent that of a file.</summary>
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/// <param name="bytes">The bytes representing our file.</param>
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/// <param name="settings">The settings we want to use to override the default settings.</param>
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/// <param name="syncWithFile">Whether we should sync this ES3File with the one in storage immediately after creating it.</param>
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public ES3File(byte[] bytes, ES3Settings settings = null)
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{
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if (settings == null)
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this.settings = new ES3Settings();
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else
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this.settings = settings;
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syncWithFile = true; // This ensures that the file won't be merged, which would prevent deleted keys from being deleted.
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SaveRaw(bytes, settings);
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}
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/// <summary>Synchronises this ES3File with a file in storage.</summary>
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public void Sync()
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{
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Sync(this.settings);
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}
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/// <summary>Synchronises this ES3File with a file in storage.</summary>
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/// <param name="filepath">The relative or absolute path of the file in storage we want to synchronise with.</param>
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/// <param name="settings">The settings we want to use to override the default settings.</param>
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public void Sync(string filePath, ES3Settings settings = null)
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{
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Sync(new ES3Settings(filePath, settings));
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}
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/// <summary>Synchronises this ES3File with a file in storage.</summary>
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/// <param name="settings">The settings we want to use to override the default settings.</param>
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public void Sync(ES3Settings settings = null)
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{
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if (settings == null)
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settings = new ES3Settings();
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if (cache.Count == 0)
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{
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ES3.DeleteFile(settings);
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return;
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}
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using (var baseWriter = ES3Writer.Create(settings, true, !syncWithFile, false))
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{
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foreach (var kvp in cache)
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{
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// If we change the name of a type, the type may be null.
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// In this case, use System.Object as the type.
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Type type;
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if (kvp.Value.type == null)
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type = typeof(System.Object);
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else
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type = kvp.Value.type.type;
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baseWriter.Write(kvp.Key, type, kvp.Value.bytes);
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}
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baseWriter.Save(!syncWithFile);
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}
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}
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/// <summary>Removes the data stored in this ES3File. The ES3File will be empty after calling this method.</summary>
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public void Clear()
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{
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cache.Clear();
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}
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/// <summary>Returns an array of all of the key names in this ES3File.</summary>
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public string[] GetKeys()
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{
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var keyCollection = cache.Keys;
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var keys = new string[keyCollection.Count];
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keyCollection.CopyTo(keys, 0);
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return keys;
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}
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#region Save Methods
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/// <summary>Saves a value to a key in this ES3File.</summary>
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/// <param name="key">The key we want to use to identify our value in the file.</param>
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/// <param name="value">The value we want to save.</param>
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public void Save<T>(string key, T value)
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{
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var unencryptedSettings = (ES3Settings)settings.Clone();
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unencryptedSettings.encryptionType = ES3.EncryptionType.None;
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unencryptedSettings.compressionType = ES3.CompressionType.None;
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// If T is object, use the value to get it's type. Otherwise, use T so that it works with inheritence.
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Type type;
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if (value == null)
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type = typeof(T);
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else
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type = value.GetType();
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ES3Type es3Type = ES3TypeMgr.GetOrCreateES3Type(type);
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cache[key] = new ES3Data(es3Type, ES3.Serialize(value, es3Type, unencryptedSettings));
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}
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/// <summary>Merges the data specified by the bytes parameter into this ES3File.</summary>
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/// <param name="bytes">The bytes we want to merge with this ES3File.</param>
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/// <param name="settings">The settings we want to use to override the default settings.</param>
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public void SaveRaw(byte[] bytes, ES3Settings settings = null)
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{
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if (settings == null)
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settings = new ES3Settings();
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// Type checking must be enabled when syncing.
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var settingsWithTypeChecking = (ES3Settings)settings.Clone();
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settingsWithTypeChecking.typeChecking = true;
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using (var reader = ES3Reader.Create(bytes, settingsWithTypeChecking))
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{
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if (reader == null)
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return;
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foreach (KeyValuePair<string, ES3Data> kvp in reader.RawEnumerator)
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cache[kvp.Key] = kvp.Value;
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}
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}
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/// <summary>Merges the data specified by the bytes parameter into this ES3File.</summary>
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/// <param name="bytes">The bytes we want to merge with this ES3File.</param>
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/// <param name="settings">The settings we want to use to override the default settings.</param>
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public void AppendRaw(byte[] bytes, ES3Settings settings = null)
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{
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if (settings == null)
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settings = new ES3Settings();
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// AppendRaw just does the same thing as SaveRaw in ES3File.
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SaveRaw(bytes, settings);
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}
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#endregion
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#region Load Methods
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/* Standard load methods */
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/// <summary>Loads the value from this ES3File with the given key.</summary>
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/// <param name="key">The key which identifies the value we want to load.</param>
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public object Load(string key)
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{
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return Load<object>(key);
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}
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/// <summary>Loads the value from this ES3File with the given key.</summary>
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/// <param name="key">The key which identifies the value we want to load.</param>
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/// <param name="defaultValue">The value we want to return if the key does not exist in this ES3File.</param>
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public object Load(string key, object defaultValue)
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{
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return Load<object>(key, defaultValue);
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}
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/// <summary>Loads the value from this ES3File with the given key.</summary>
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/// <param name="key">The key which identifies the value we want to load.</param>
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public T Load<T>(string key)
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{
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ES3Data es3Data;
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if (!cache.TryGetValue(key, out es3Data))
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throw new KeyNotFoundException("Key \"" + key + "\" was not found in this ES3File. Use Load<T>(key, defaultValue) if you want to return a default value if the key does not exist.");
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var unencryptedSettings = (ES3Settings)this.settings.Clone();
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unencryptedSettings.encryptionType = ES3.EncryptionType.None;
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unencryptedSettings.compressionType = ES3.CompressionType.None;
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// If we're loading a derived type using it's parent type, ensure that we use the ES3Type from the ES3Data.
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if (typeof(T) != es3Data.type.type && ES3Reflection.IsAssignableFrom(typeof(T), es3Data.type.type))
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return (T)ES3.Deserialize(es3Data.type, es3Data.bytes, unencryptedSettings);
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return ES3.Deserialize<T>(es3Data.bytes, unencryptedSettings);
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}
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/// <summary>Loads the value from this ES3File with the given key.</summary>
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/// <param name="key">The key which identifies the value we want to load.</param>
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/// <param name="defaultValue">The value we want to return if the key does not exist in this ES3File.</param>
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public T Load<T>(string key, T defaultValue)
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{
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ES3Data es3Data;
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if (!cache.TryGetValue(key, out es3Data))
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return defaultValue;
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var unencryptedSettings = (ES3Settings)this.settings.Clone();
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unencryptedSettings.encryptionType = ES3.EncryptionType.None;
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unencryptedSettings.compressionType = ES3.CompressionType.None;
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// If we're loading a derived type using it's parent type, ensure that we use the ES3Type from the ES3Data.
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if (typeof(T) != es3Data.type.type && ES3Reflection.IsAssignableFrom(typeof(T), es3Data.type.type))
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return (T)ES3.Deserialize(es3Data.type, es3Data.bytes, unencryptedSettings);
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return ES3.Deserialize<T>(es3Data.bytes, unencryptedSettings);
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}
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/// <summary>Loads the value from this ES3File with the given key into an existing object.</summary>
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/// <param name="key">The key which identifies the value we want to load.</param>
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/// <param name="obj">The object we want to load the value into.</param>
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public void LoadInto<T>(string key, T obj) where T : class
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{
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ES3Data es3Data;
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if (!cache.TryGetValue(key, out es3Data))
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throw new KeyNotFoundException("Key \"" + key + "\" was not found in this ES3File. Use Load<T>(key, defaultValue) if you want to return a default value if the key does not exist.");
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var unencryptedSettings = (ES3Settings)this.settings.Clone();
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unencryptedSettings.encryptionType = ES3.EncryptionType.None;
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unencryptedSettings.compressionType = ES3.CompressionType.None;
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// If we're loading a derived type using it's parent type, ensure that we use the ES3Type from the ES3Data.
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if (typeof(T) != es3Data.type.type && ES3Reflection.IsAssignableFrom(typeof(T), es3Data.type.type))
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ES3.DeserializeInto(es3Data.type, es3Data.bytes, obj, unencryptedSettings);
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else
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ES3.DeserializeInto(es3Data.bytes, obj, unencryptedSettings);
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}
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#endregion
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#region Load Raw Methods
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/// <summary>Loads the ES3File as a raw, unencrypted, uncompressed byte array.</summary>
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public byte[] LoadRawBytes()
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{
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var newSettings = (ES3Settings)settings.Clone();
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if (!newSettings.postprocessRawCachedData)
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{
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newSettings.encryptionType = ES3.EncryptionType.None;
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newSettings.compressionType = ES3.CompressionType.None;
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}
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return GetBytes(newSettings);
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}
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/// <summary>Loads the ES3File as a raw, unencrypted, uncompressed string, using the encoding defined in the ES3File's settings variable.</summary>
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public string LoadRawString()
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{
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if (cache.Count == 0)
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return "";
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return settings.encoding.GetString(LoadRawBytes());
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}
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/*
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* Same as LoadRawString, except it will return an encrypted/compressed file if these are enabled.
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*/
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internal byte[] GetBytes(ES3Settings settings = null)
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{
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if (cache.Count == 0)
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return new byte[0];
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if (settings == null)
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settings = this.settings;
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using (var ms = new System.IO.MemoryStream())
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{
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var memorySettings = (ES3Settings)settings.Clone();
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memorySettings.location = ES3.Location.InternalMS;
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// Ensure we return unencrypted bytes.
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if (!memorySettings.postprocessRawCachedData)
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{
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memorySettings.encryptionType = ES3.EncryptionType.None;
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memorySettings.compressionType = ES3.CompressionType.None;
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}
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using (var baseWriter = ES3Writer.Create(ES3Stream.CreateStream(ms, memorySettings, ES3FileMode.Write), memorySettings, true, false))
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{
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foreach (var kvp in cache)
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baseWriter.Write(kvp.Key, kvp.Value.type.type, kvp.Value.bytes);
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baseWriter.Save(false);
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}
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return ms.ToArray();
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}
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}
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#endregion
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#region Other ES3 Methods
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/// <summary>Deletes a key from this ES3File.</summary>
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/// <param name="key">The key we want to delete.</param>
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public void DeleteKey(string key)
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{
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cache.Remove(key);
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}
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/// <summary>Checks whether a key exists in this ES3File.</summary>
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/// <param name="key">The key we want to check the existence of.</param>
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/// <returns>True if the key exists, otherwise False.</returns>
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public bool KeyExists(string key)
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{
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return cache.ContainsKey(key);
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}
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/// <summary>Gets the size of the cached data in bytes.</summary>
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public int Size()
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{
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int size = 0;
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foreach (var kvp in cache)
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size += kvp.Value.bytes.Length;
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return size;
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}
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public Type GetKeyType(string key)
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{
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ES3Data es3data;
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if (!cache.TryGetValue(key, out es3data))
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throw new KeyNotFoundException("Key \"" + key + "\" was not found in this ES3File. Use Load<T>(key, defaultValue) if you want to return a default value if the key does not exist.");
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return es3data.type.type;
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}
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#endregion
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[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
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internal static ES3File GetOrCreateCachedFile(ES3Settings settings)
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{
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ES3File cachedFile;
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if (!cachedFiles.TryGetValue(settings.path, out cachedFile))
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{
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cachedFile = new ES3File(settings, false);
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cachedFiles.Add(settings.path, cachedFile);
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cachedFile.syncWithFile = true; // This ensures that the file won't be merged, which would prevent deleted keys from being deleted.
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}
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// Settings might refer to the same file, but might have changed.
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// To account for this, we update the settings of the ES3File each time we access it.
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cachedFile.settings = settings;
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return cachedFile;
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}
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internal static void CacheFile(ES3Settings settings)
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{
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// If we're still using cached settings, set it to the default location.
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if (settings.location == ES3.Location.Cache)
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{
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settings = (ES3Settings)settings.Clone();
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// If the default settings are also set to cache, assume ES3.Location.File. Otherwise, set it to the default location.
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settings.location = ES3Settings.defaultSettings.location == ES3.Location.Cache ? ES3.Location.File : ES3Settings.defaultSettings.location;
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}
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if (!ES3.FileExists(settings))
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return;
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// Disable compression and encryption when loading the raw bytes, and the ES3File constructor will expect encrypted/compressed bytes.
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var loadSettings = (ES3Settings)settings.Clone();
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loadSettings.compressionType = ES3.CompressionType.None;
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loadSettings.encryptionType = ES3.EncryptionType.None;
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cachedFiles[settings.path] = new ES3File(ES3.LoadRawBytes(loadSettings), settings);
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}
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[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
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internal static void Store(ES3Settings settings = null)
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{
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if (settings == null)
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settings = new ES3Settings(ES3.Location.File);
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// If we're still using cached settings, set it to the default location.
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else if (settings.location == ES3.Location.Cache)
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{
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settings = (ES3Settings)settings.Clone();
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// If the default settings are also set to cache, assume ES3.Location.File. Otherwise, set it to the default location.
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settings.location = ES3Settings.defaultSettings.location == ES3.Location.Cache ? ES3.Location.File : ES3Settings.defaultSettings.location;
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}
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ES3File cachedFile;
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if (!cachedFiles.TryGetValue(settings.path, out cachedFile))
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throw new FileNotFoundException("The file '" + settings.path + "' could not be stored because it could not be found in the cache.");
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cachedFile.Sync(settings);
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}
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[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
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internal static void RemoveCachedFile(ES3Settings settings)
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{
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cachedFiles.Remove(settings.path);
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}
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[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
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internal static void CopyCachedFile(ES3Settings oldSettings, ES3Settings newSettings)
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{
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ES3File cachedFile;
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if (!cachedFiles.TryGetValue(oldSettings.path, out cachedFile))
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throw new FileNotFoundException("The file '" + oldSettings.path + "' could not be copied because it could not be found in the cache.");
|
|
if (cachedFiles.ContainsKey(newSettings.path))
|
|
throw new InvalidOperationException("Cannot copy file '" + oldSettings.path + "' to '" + newSettings.path + "' because '" + newSettings.path + "' already exists");
|
|
|
|
cachedFiles.Add(newSettings.path, (ES3File)cachedFile.MemberwiseClone());
|
|
}
|
|
|
|
[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
|
|
internal static void DeleteKey(string key, ES3Settings settings)
|
|
{
|
|
ES3File cachedFile;
|
|
if (cachedFiles.TryGetValue(settings.path, out cachedFile))
|
|
cachedFile.DeleteKey(key);
|
|
}
|
|
|
|
[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
|
|
internal static bool KeyExists(string key, ES3Settings settings)
|
|
{
|
|
ES3File cachedFile;
|
|
if (cachedFiles.TryGetValue(settings.path, out cachedFile))
|
|
return cachedFile.KeyExists(key);
|
|
return false;
|
|
}
|
|
|
|
[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
|
|
internal static bool FileExists(ES3Settings settings)
|
|
{
|
|
return cachedFiles.ContainsKey(settings.path);
|
|
}
|
|
|
|
[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
|
|
internal static string[] GetKeys(ES3Settings settings)
|
|
{
|
|
ES3File cachedFile;
|
|
if (!cachedFiles.TryGetValue(settings.path, out cachedFile))
|
|
throw new FileNotFoundException("Could not get keys from the file '" + settings.path + "' because it could not be found in the cache.");
|
|
return cachedFile.cache.Keys.ToArray();
|
|
}
|
|
|
|
[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
|
|
internal static string[] GetFiles()
|
|
{
|
|
return cachedFiles.Keys.ToArray();
|
|
}
|
|
|
|
internal static DateTime GetTimestamp(ES3Settings settings)
|
|
{
|
|
ES3File cachedFile;
|
|
if (!cachedFiles.TryGetValue(settings.path, out cachedFile))
|
|
return new DateTime(1970, 1, 1, 0, 0, 0, 0, System.DateTimeKind.Utc);
|
|
return cachedFile.timestamp;
|
|
}
|
|
}
|
|
|
|
namespace ES3Internal
|
|
{
|
|
public struct ES3Data
|
|
{
|
|
public ES3Type type;
|
|
public byte[] bytes;
|
|
|
|
public ES3Data(Type type, byte[] bytes)
|
|
{
|
|
this.type = type == null ? null : ES3TypeMgr.GetOrCreateES3Type(type);
|
|
this.bytes = bytes;
|
|
}
|
|
|
|
public ES3Data(ES3Type type, byte[] bytes)
|
|
{
|
|
this.type = type;
|
|
this.bytes = bytes;
|
|
}
|
|
}
|
|
}
|