private static void ShowHelp(OptionSet options, AssemblyProviderFactoryCollection providerFactoryCollection)
{
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine("Differ");
Console.WriteLine("------");
Console.WriteLine("Diffs assemblies from different sources");
Console.WriteLine();
Console.WriteLine("Differ.exe <Old Assembly Provider> <New Assembly Provider> [Options]");
Console.WriteLine();
Console.WriteLine("Supported Assembly Providers:");
Console.WriteLine();
foreach (var providerFactory in providerFactoryCollection)
{
Console.WriteLine($" {providerFactory.Format}");
}
Console.WriteLine();
Console.WriteLine("Options:");
options.WriteOptionDescriptions(Console.Out);
Console.WriteLine();
Console.ResetColor();
}
static void Main(string[] args)
{
var providers = new AssemblyProviderFactoryCollection(
new AssemblyProviderFactory(),
new DirectoryAssemblyProviderFactory(),
new NuGetAssemblyProviderFactory(new Providers.NuGet.NuGet(
Environment.GetEnvironmentVariable("NUGET"),
Environment.GetEnvironmentVariable("NUGET_SOURCES"))),
new GitHubAssemblyProviderFactory(new Git(Environment.GetEnvironmentVariable("GIT")))
);
var exporters = new ExporterCollection(
new XmlExporter(),
new MarkdownExporter(),
new AsciiDocExporter()
);
var options = new OptionSet
{
{ "t|target=", "the assembly targets. Defaults to *all* assemblies located by the provider", AddTarget },
{ "f|format=", $"the format of the diff output. Supported formats are {exporters.SupportedFormats}. Defaults to {_format}", f => _format = f },
{ "o|output=", "the output directory. Defaults to current directory", o => _output = o },
{ "h|?|help", "show this message and exit", h => _help = h != null },
};
if (args.Length < 2)
{
ShowHelp(options, providers);
Environment.ExitCode = 1;
return;
}
List <string> unflaggedArgs;
try
{
unflaggedArgs = options.Parse(args);
}
catch (OptionException e)
{
Console.WriteLine(e.Message);
Console.WriteLine("Try 'Differ.exe --help' for more information.");
Environment.ExitCode = 1;
return;
}
if (_help)
{
ShowHelp(options, providers);
return;
}
try
{
var firstProvider = providers.GetProvider(unflaggedArgs[0]);
var secondProvider = providers.GetProvider(unflaggedArgs[1]);
if (!exporters.Contains(_format))
{
throw new Exception($"No exporter for format '{_format}'");
}
var exporter = exporters[_format];
foreach (var assemblyPair in CreateAssemblyPairs(firstProvider, secondProvider))
{
assemblyPair.Diff =
APIDiffHelper.GetAPIDifferences(assemblyPair.First.FullName, assemblyPair.Second.FullName);
if (assemblyPair.Diff == null)
{
Console.WriteLine($"No diff between {assemblyPair.First.FullName} and {assemblyPair.Second.FullName}");
continue;
}
exporter.Export(assemblyPair, _output);
}
}
catch (Exception e)
{
Console.WriteLine(e);
Environment.ExitCode = 1;
}
}
private static int Main(string[] args)
{
var providers = new AssemblyProviderFactoryCollection(
new AssemblyProviderFactory(),
new DirectoryAssemblyProviderFactory(),
new NuGetAssemblyProviderFactory(new Providers.NuGet.NuGet()),
new PreviousNuGetAssemblyProviderFactory(new PreviousNugetLocator()),
new GitHubAssemblyProviderFactory(new Git(Environment.GetEnvironmentVariable("GIT")))
);
var exporters = new ExporterCollection(
new XmlExporter(),
new MarkdownExporter(),
new AsciiDocExporter(),
new GitHubActionCommentExporter()
);
var options = new OptionSet
{
{ "t|target=", "the assembly targets. Defaults to *all* assemblies located by the provider", AddTarget },
{ "f|format=", $"the format of the diff output. Supported formats are {exporters.SupportedFormats}. Defaults to {_format}", f => _format = f },
{ "o|output=", "the output directory or file name. If not specified only prints to console", o => _output = new OutputWriterFactory(o) },
{ "p|prevent-change=", "Fail if the change detected is higher then specified: none|patch|minor|major. Defaults to `none` which will never fail.",
c => _preventChange = Enum.Parse <SuggestedVersionChange>(c, true) },
{ "a|allow-empty-previous-nuget=", "",
n => _allowEmptyPreviousNuget = n != null },
{ "h|?|help", "show this message and exit", h => _help = h != null },
};
if (_help)
{
ShowHelp(options, providers);
return(2);
}
if (args.Length < 2)
{
ShowHelp(options, providers);
return(2);
}
List <string> unflaggedArgs;
try
{
unflaggedArgs = options.Parse(args);
}
catch (OptionException e)
{
Console.WriteLine(e.Message);
Console.WriteLine("Try 'Differ.exe --help' for more information.");
Environment.ExitCode = 1;
return(2);
}
try
{
var firstProvider = providers.GetProvider(unflaggedArgs[0]);
var secondProvider = providers.GetProvider(unflaggedArgs[1]);
var firstProviderName = providers.GetProviderName(unflaggedArgs[0]);
var secondProviderName = providers.GetProviderName(unflaggedArgs[1]);
if (!exporters.Contains(_format))
{
throw new Exception($"No exporter for format '{_format}'");
}
var exporter = exporters[_format];
var first = firstProvider.GetAssemblies(Targets).ToList();
var second = secondProvider.GetAssemblies(Targets).ToList();
var pairs = CreateAssemblyPairs(first, second).ToList();
if (!pairs.Any())
{
if (_allowEmptyPreviousNuget &&
(firstProviderName == "previous-nuget" || secondProviderName == "previous-nuget"))
{
Console.WriteLine($"[diff] No previous nuget found for: {firstProviderName}");
Console.WriteLine($"[diff] {firstProvider.GetType().Name}: {first.Count()} assemblies");
Console.WriteLine($"[diff] {secondProvider.GetType().Name}: {second.Count()} assemblies");
Console.WriteLine($"[diff]");
Console.WriteLine($"[diff] NOT treated as an error because --allow-empty-previous-nuget was set");
return(0);
}
Console.Error.WriteLine($"[diff] Unable to create diff!");
Console.Error.WriteLine($"[diff] {firstProvider.GetType().Name}: {first.Count()} assemblies");
Console.Error.WriteLine($"[diff] {secondProvider.GetType().Name}: {second.Count()} assemblies");
return(1);
}
var result = new AllComparisonResults(pairs, _preventChange);
foreach (var assemblyPair in pairs)
{
assemblyPair.Diff =
APIDiffHelper.GetAPIDifferences(assemblyPair.First.FullName, assemblyPair.Second.FullName);
if (assemblyPair.Diff == null)
{
Console.WriteLine($"[diff] No diff between {assemblyPair.First.FullName} and {assemblyPair.Second.FullName}");
continue;
}
Console.WriteLine($"[diff] Difference found: {firstProvider.GetType().Name}:{assemblyPair.First.Name} and {secondProvider.GetType().Name}:{assemblyPair.Second.Name}");
if (exporter is IAssemblyComparisonExporter c)
{
c.Export(assemblyPair, _output);
}
}
if (exporter is IAllComparisonResultsExporter allExporter)
{
allExporter.Export(result, _output);
}
if (_preventChange > SuggestedVersionChange.None && result.SuggestedVersionChange >= _preventChange)
{
Console.Error.WriteLine($"[diff] Needed version change '{result.SuggestedVersionChange}' exceeds or equals configured lock: '{_preventChange}");
return(4);
}
Console.WriteLine($"[diff] Suggested version change: {result.SuggestedVersionChange}");
}
catch (Exception e)
{
Console.Error.WriteLine(e);
return(1);
}
return(0);
}
