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// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
namespace WixToolset
{
using System;
using System.Collections;
using WixToolset.Data;
using WixToolset.Extensibility;
using Wix = WixToolset.Data.Serialize;
/// <summary>
/// The base of the decompiler. Holds some variables used by the decompiler and extensions,
/// as well as some utility methods.
/// </summary>
internal class DecompilerCore : IDecompilerCore
{
private Hashtable elements;
private Wix.IParentElement rootElement;
private bool showPedanticMessages;
private Wix.UI uiElement;
/// <summary>
/// Instantiate a new decompiler core.
/// </summary>
/// <param name="rootElement">The root element of the decompiled database.</param>
/// <param name="messageHandler">The message handler.</param>
internal DecompilerCore(Wix.IParentElement rootElement)
{
this.elements = new Hashtable();
this.rootElement = rootElement;
}
/// <summary>
/// Gets whether the decompiler core encountered an error while processing.
/// </summary>
/// <value>Flag if core encountered an error during processing.</value>
public bool EncounteredError
{
get { return Messaging.Instance.EncounteredError; }
}
/// <summary>
/// Gets the root element of the decompiled output.
/// </summary>
/// <value>The root element of the decompiled output.</value>
public Wix.IParentElement RootElement
{
get { return this.rootElement; }
}
/// <summary>
/// Gets or sets the option to show pedantic messages.
/// </summary>
/// <value>The option to show pedantic messages.</value>
public bool ShowPedanticMessages
{
get { return this.showPedanticMessages; }
set { this.showPedanticMessages = value; }
}
/// <summary>
/// Gets the UI element.
/// </summary>
/// <value>The UI element.</value>
public Wix.UI UIElement
{
get
{
if (null == this.uiElement)
{
this.uiElement = new Wix.UI();
this.rootElement.AddChild(this.uiElement);
}
return this.uiElement;
}
}
/// <summary>
/// Verifies if a filename is a valid short filename.
/// </summary>
/// <param name="filename">Filename to verify.</param>
/// <param name="allowWildcards">true if wildcards are allowed in the filename.</param>
/// <returns>True if the filename is a valid short filename</returns>
public virtual bool IsValidShortFilename(string filename, bool allowWildcards)
{
return false;
}
/// <summary>
/// Convert an Int32 into a DateTime.
/// </summary>
/// <param name="value">The Int32 value.</param>
/// <returns>The DateTime.</returns>
public DateTime ConvertIntegerToDateTime(int value)
{
int date = value / 65536;
int time = value % 65536;
return new DateTime(1980 + (date / 512), (date % 512) / 32, date % 32, time / 2048, (time % 2048) / 32, (time % 32) * 2);
}
/// <summary>
/// Gets the element corresponding to the row it came from.
/// </summary>
/// <param name="row">The row corresponding to the element.</param>
/// <returns>The indexed element.</returns>
public Wix.ISchemaElement GetIndexedElement(Row row)
{
return this.GetIndexedElement(row.TableDefinition.Name, row.GetPrimaryKey(DecompilerConstants.PrimaryKeyDelimiter));
}
/// <summary>
/// Gets the element corresponding to the primary key of the given table.
/// </summary>
/// <param name="table">The table corresponding to the element.</param>
/// <param name="primaryKey">The primary key corresponding to the element.</param>
/// <returns>The indexed element.</returns>
public Wix.ISchemaElement GetIndexedElement(string table, params string[] primaryKey)
{
return (Wix.ISchemaElement)this.elements[String.Concat(table, ':', String.Join(DecompilerConstants.PrimaryKeyDelimiterString, primaryKey))];
}
/// <summary>
/// Index an element by its corresponding row.
/// </summary>
/// <param name="row">The row corresponding to the element.</param>
/// <param name="element">The element to index.</param>
public void IndexElement(Row row, Wix.ISchemaElement element)
{
this.elements.Add(String.Concat(row.TableDefinition.Name, ':', row.GetPrimaryKey(DecompilerConstants.PrimaryKeyDelimiter)), element);
}
/// <summary>
/// Indicates the decompiler encountered and unexpected table to decompile.
/// </summary>
/// <param name="table">Unknown decompiled table.</param>
public void UnexpectedTable(Table table)
{
this.OnMessage(WixErrors.TableDecompilationUnimplemented(table.Name));
}
/// <summary>
/// Sends a message to the message delegate if there is one.
/// </summary>
/// <param name="mea">Message event arguments.</param>
public void OnMessage(MessageEventArgs e)
{
Messaging.Instance.OnMessage(e);
}
}
}
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