private static async Task Main(string[] args)
{
// setup the config with defaults
ScraperConfig config = new ScraperConfig()
{
PageSize = _defaultPageSize,
RunOnlyOnePage = _defaultRunOnlyOnePage,
SaveCandidatePacks = _defaultSaveCandidatePacks,
IncludePreviewPacks = _defaultIncludePreviewPacks
};
if (!TryParseArgs(args, config) || string.IsNullOrEmpty(config.BasePath))
{
// base path is the only required arg.
ShowUsageMessage();
return;
}
PackSourceChecker packSourceChecker;
// if or when we add other sources to scrape, input args can control which execute(s).
if (true)
{
if (!NugetPackScraper.TryCreateDefaultNugetPackScraper(config, out packSourceChecker))
{
Console.WriteLine("Unable to create the NugetPackScraper.");
return;
}
}
else
{
throw new NotImplementedException("no checker for the input options");
}
PackSourceCheckResult checkResults = await packSourceChecker.CheckPackagesAsync().ConfigureAwait(false);
PackCheckResultReportWriter.TryWriteResults(config.BasePath, checkResults);
}
private static bool TryParseArgs(string[] args, ScraperConfig config)
{
int index = 0;
while (index < args.Length)
{
if (string.Equals(args[index], _basePathFlag, StringComparison.Ordinal))
{
if (TryGetFlagValue(args, index, out string basePath))
{
config.BasePath = basePath;
index += 2;
}
else
{
return(false);
}
}
else if (string.Equals(args[index], _pageSizeFlag, StringComparison.Ordinal))
{
if (TryGetFlagValue(args, index, out string pageSizeString) && int.TryParse(pageSizeString, out int pageSize))
{
config.PageSize = pageSize;
index += 2;
}
else
{
return(false);
}
}
else if (string.Equals(args[index], _previousOutputBasePathFlag, StringComparison.Ordinal))
{
if (TryGetFlagValue(args, index, out string previousOutputBasePath))
{
config.PreviousRunBasePath = previousOutputBasePath;
index += 2;
}
else
{
return(false);
}
}
else if (string.Equals(args[index], _runOnlyOnePageFlag, StringComparison.Ordinal))
{
config.RunOnlyOnePage = true;
++index;
}
else if (string.Equals(args[index], _saveDownloadedPacksFlag, StringComparison.Ordinal))
{
config.SaveCandidatePacks = true;
++index;
}
else if (string.Equals(args[index], _includePreviewPacksFlag, StringComparison.Ordinal))
{
config.IncludePreviewPacks = true;
++index;
}
else if (string.Equals(args[index], _noTemplateJsonFilterFlag, StringComparison.Ordinal))
{
config.DontFilterOnTemplateJson = true;
++index;
}
else if (string.Equals(args[index], _verbose, StringComparison.Ordinal))
{
Verbose.IsEnabled = true;
++index;
}
else if (string.Equals(args[index], _providers, StringComparison.Ordinal))
{
if (TryGetFlagValue(args, index, out string providersList))
{
config.Providers.AddRange(providersList.Split('|', StringSplitOptions.TrimEntries));
foreach (string provider in config.Providers)
{
if (!NugetPackScraper.SupportedProvidersList.Contains(provider, StringComparer.OrdinalIgnoreCase))
{
Console.WriteLine($"Provider {provider} is not supported. Supported providers: {string.Join(",", NugetPackScraper.SupportedProvidersList)}.");
return(false);
}
}
index += 2;
}
else
{
return(false);
}
}
else
{
return(false);
}
}
return(true);
}
private static bool TryParseArgs(string[] args, ScraperConfig config)
{
int index = 0;
while (index < args.Length)
{
if (string.Equals(args[index], _basePathFlag, StringComparison.Ordinal))
{
if (TryGetFlagValue(args, index, out string basePath))
{
config.BasePath = basePath;
index += 2;
}
else
{
return(false);
}
}
else if (string.Equals(args[index], _pageSizeFlag, StringComparison.Ordinal))
{
if (TryGetFlagValue(args, index, out string pageSizeString) && int.TryParse(pageSizeString, out int pageSize))
{
config.PageSize = pageSize;
index += 2;
}
else
{
return(false);
}
}
else if (string.Equals(args[index], _previousOutputBasePathFlag, StringComparison.Ordinal))
{
if (TryGetFlagValue(args, index, out string previousOutputBasePath))
{
config.PreviousRunBasePath = previousOutputBasePath;
index += 2;
}
else
{
return(false);
}
}
else if (string.Equals(args[index], _runOnlyOnePageFlag, StringComparison.Ordinal))
{
config.RunOnlyOnePage = true;
++index;
}
else if (string.Equals(args[index], _saveDownloadedPacksFlag, StringComparison.Ordinal))
{
config.SaveCandidatePacks = true;
++index;
}
else if (string.Equals(args[index], _includePreviewPacksFlag, StringComparison.Ordinal))
{
config.IncludePreviewPacks = true;
++index;
}
else if (string.Equals(args[index], _noTemplateJsonFilterFlag, StringComparison.Ordinal))
{
config.DontFilterOnTemplateJson = true;
++index;
}
else if (string.Equals(args[index], _verbose, StringComparison.Ordinal))
{
Verbose.IsEnabled = true;
++index;
}
else
{
return(false);
}
}
return(true);
}