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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.Link
{
using System;
using System.Collections.Generic;
using System.Linq;
using WixToolset.Data;
internal class FindEntrySectionAndLoadSymbolsCommand : ICommand
{
private IEnumerable<Section> sections;
public FindEntrySectionAndLoadSymbolsCommand(IEnumerable<Section> sections)
{
this.sections = sections;
}
/// <summary>
/// Sets the expected entry output type, based on output file extension provided to the linker.
/// </summary>
public OutputType ExpectedOutputType { private get; set; }
/// <summary>
/// Gets the located entry section after the command is executed.
/// </summary>
public Section EntrySection { get; private set; }
/// <summary>
/// Gets the collection of loaded symbols.
/// </summary>
public IDictionary<string, Symbol> Symbols { get; private set; }
public IEnumerable<Symbol> PossiblyConflictingSymbols { get; private set; }
public void Execute()
{
Dictionary<string, Symbol> symbols = new Dictionary<string, Symbol>();
HashSet<Symbol> possibleConflicts = new HashSet<Symbol>();
SectionType expectedEntrySectionType;
if (!Enum.TryParse<SectionType>(this.ExpectedOutputType.ToString(), out expectedEntrySectionType))
{
expectedEntrySectionType = SectionType.Unknown;
}
foreach (Section section in this.sections)
{
// Try to find the one and only entry section.
if (SectionType.Product == section.Type || SectionType.Module == section.Type || SectionType.PatchCreation == section.Type || SectionType.Patch == section.Type || SectionType.Bundle == section.Type)
{
if (SectionType.Unknown != expectedEntrySectionType && section.Type != expectedEntrySectionType)
{
string outputExtension = Output.GetExtension(this.ExpectedOutputType);
Messaging.Instance.OnMessage(WixWarnings.UnexpectedEntrySection(section.SourceLineNumbers, section.Type.ToString(), expectedEntrySectionType.ToString(), outputExtension));
}
if (null == this.EntrySection)
{
this.EntrySection = section;
}
else
{
Messaging.Instance.OnMessage(WixErrors.MultipleEntrySections(this.EntrySection.SourceLineNumbers, this.EntrySection.Id, section.Id));
Messaging.Instance.OnMessage(WixErrors.MultipleEntrySections2(section.SourceLineNumbers));
}
}
// Load all the symbols from the section's tables that create symbols.
foreach (Table table in section.Tables.Where(t => t.Definition.CreateSymbols))
{
foreach (Row row in table.Rows)
{
Symbol symbol = new Symbol(row);
Symbol existingSymbol;
if (!symbols.TryGetValue(symbol.Name, out existingSymbol))
{
symbols.Add(symbol.Name, symbol);
}
else // uh-oh, duplicate symbols.
{
// If the duplicate symbols are both private directories, there is a chance that they
// point to identical rows. Identical directory rows are redundant and will not cause
// conflicts.
if (AccessModifier.Private == existingSymbol.Access && AccessModifier.Private == symbol.Access &&
"Directory" == existingSymbol.Row.Table.Name && existingSymbol.Row.IsIdentical(symbol.Row))
{
// Ensure identical symbol's row is marked redundant to ensure (should the row be
// referenced into the final output) it will not add duplicate primary keys during
// the .IDT importing.
symbol.Row.Redundant = true;
existingSymbol.AddRedundant(symbol);
}
else
{
existingSymbol.AddPossibleConflict(symbol);
possibleConflicts.Add(existingSymbol);
}
}
}
}
}
this.Symbols = symbols;
this.PossiblyConflictingSymbols = possibleConflicts;
}
}
}
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