private static (string License, LicenseType LicenseType) GetLicense(XElement nuspecElement, string packageDirectory)
{
SoupDiscoverException.ThrowIfNull(nuspecElement, $"{nameof(nuspecElement)} must be not null!");
var licenseExpression = nuspecElement.Elements(XName.Get("license", nuspecElement.Name.NamespaceName)).FirstOrDefault(e => e.Attribute("type").Value == "expression")?.Value;
if (licenseExpression != null)
{
return(licenseExpression, LicenseType.Expression);
}
var licenseFile = nuspecElement.Elements(XName.Get("license", nuspecElement.Name.NamespaceName)).FirstOrDefault(e => e.Attribute("type").Value == "file")?.Value;
if (licenseFile != null)
{
licenseFile = Path.Combine(packageDirectory, licenseFile);
if (!File.Exists(licenseFile))
{
return(ISearchPackage.NoneLicenseExpression, LicenseType.None);
}
return(File.ReadAllText(licenseFile), LicenseType.File);
}
var licenseUrl = nuspecElement.Element(XName.Get("licenseUrl", nuspecElement.Name.NamespaceName))?.Value;
if (licenseUrl != null)
{
return(licenseUrl, LicenseType.Url);
}
return(ISearchPackage.NoneLicenseExpression, LicenseType.None);
}
private static string GetNugetCacheDirectory(string packageId, string version)
{
SoupDiscoverException.ThrowIfNullOrEmpty(packageId, $"{nameof(packageId)} must be not null or empty!");
SoupDiscoverException.ThrowIfNullOrEmpty(version, $"{nameof(version)} must be not null or empty!");
var packageDirectory = $"{packageId}.{version}";
return(Path.Combine(NugetCacheDirectory, packageId, version, $"{packageId}.nuspec").ToLower(CultureInfo.InvariantCulture));
}
/// <summary>
/// Retrieve metadata of the package, in cache, in directory %userprofile%/.nuget/packages
/// </summary>
/// <returns>The Xml node of the nuspec file of the package</returns>
private static XElement GetPackageMetadataOnLocalCache(string packageId, string version)
{
SoupDiscoverException.ThrowIfNullOrEmpty(packageId, $"{nameof(packageId)} must be not null or empty!");
SoupDiscoverException.ThrowIfNullOrEmpty(version, $"{nameof(version)} must be not null or empty!");
var packageDirectory = GetNugetCacheDirectory(packageId, version);
if (!File.Exists(packageDirectory))
{
return(null); // package not found in cache
}
var nuspecFile = XDocument.Load(packageDirectory);
return(nuspecFile.Root.Element(XName.Get("metadata", nuspecFile.Root.Name.NamespaceName)));
}
