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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.Core.CommandLine
{
using System;
using System.Collections.Generic;
using WixToolset.Extensibility;
using WixToolset.Extensibility.Data;
using WixToolset.Extensibility.Services;
internal enum CommandTypes
{
Unknown,
Build,
Preprocess,
Compile,
Link,
Bind,
Decompile,
}
internal class CommandLine : ICommandLine
{
public CommandLine(IWixToolsetServiceProvider serviceProvider) => this.ServiceProvider = serviceProvider;
private IWixToolsetServiceProvider ServiceProvider { get; }
public ICommandLineCommand CreateCommand(string[] args)
{
var arguments = this.ServiceProvider.GetService<ICommandLineArguments>();
arguments.Populate(args);
this.LoadExtensions(arguments.Extensions);
return this.ParseStandardCommandLine(arguments);
}
public ICommandLineCommand CreateCommand(string commandLine)
{
var arguments = this.ServiceProvider.GetService<ICommandLineArguments>();
arguments.Populate(commandLine);
this.LoadExtensions(arguments.Extensions);
return this.ParseStandardCommandLine(arguments);
}
public ICommandLineCommand ParseStandardCommandLine(ICommandLineArguments arguments)
{
var context = this.ServiceProvider.GetService<ICommandLineContext>();
context.ExtensionManager = this.ServiceProvider.GetService<IExtensionManager>();
context.Arguments = arguments;
var command = this.Parse(context);
if (command.ShowLogo)
{
AppCommon.DisplayToolHeader();
}
return command;
}
private void LoadExtensions(string[] extensions)
{
var extensionManager = this.ServiceProvider.GetService<IExtensionManager>();
foreach (var extension in extensions)
{
extensionManager.Load(extension);
}
}
private ICommandLineCommand Parse(ICommandLineContext context)
{
var extensions = context.ExtensionManager.GetServices<IExtensionCommandLine>();
foreach (var extension in extensions)
{
extension.PreParse(context);
}
ICommandLineCommand command = null;
var parser = context.Arguments.Parse();
while (command?.StopParsing != true &&
String.IsNullOrEmpty(parser.ErrorArgument) &&
parser.TryGetNextSwitchOrArgument(out var arg))
{
if (String.IsNullOrWhiteSpace(arg)) // skip blank arguments.
{
continue;
}
// First argument must be the command or global switch (that creates a command).
if (command == null)
{
if (!this.TryParseCommand(arg, parser, extensions, out command))
{
parser.ErrorArgument = arg;
}
}
else if (parser.IsSwitch(arg))
{
if (!command.TryParseArgument(parser, arg) && !TryParseCommandLineArgumentWithExtension(arg, parser, extensions))
{
parser.ErrorArgument = arg;
}
}
else if (!TryParseCommandLineArgumentWithExtension(arg, parser, extensions) && !command.TryParseArgument(parser, arg))
{
parser.ErrorArgument = arg;
}
}
foreach (var extension in extensions)
{
extension.PostParse();
}
return command ?? new HelpCommand(extensions);
}
private bool TryParseCommand(string arg, ICommandLineParser parser, IEnumerable<IExtensionCommandLine> extensions, out ICommandLineCommand command)
{
command = null;
if (parser.IsSwitch(arg))
{
var parameter = arg.Substring(1);
switch (parameter.ToLowerInvariant())
{
case "?":
case "h":
case "help":
case "-help":
command = new HelpCommand(extensions);
break;
case "version":
case "-version":
command = new VersionCommand();
break;
}
}
else
{
if (Enum.TryParse(arg, true, out CommandTypes commandType))
{
switch (commandType)
{
case CommandTypes.Build:
command = new BuildCommand(this.ServiceProvider);
break;
case CommandTypes.Compile:
command = new CompileCommand(this.ServiceProvider);
break;
case CommandTypes.Decompile:
command = new DecompileCommand(this.ServiceProvider);
break;
}
}
else
{
foreach (var extension in extensions)
{
if (extension.TryParseCommand(parser, arg, out command))
{
break;
}
command = null;
}
}
}
return command != null;
}
private static bool TryParseCommandLineArgumentWithExtension(string arg, ICommandLineParser parse, IEnumerable<IExtensionCommandLine> extensions)
{
foreach (var extension in extensions)
{
if (extension.TryParseArgument(parse, arg))
{
return true;
}
}
return false;
}
}
}
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