public DisplayPackageViewModel Setup(
DisplayPackageViewModel viewModel,
Package package,
IReadOnlyCollection <Package> allVersions,
User currentUser,
IReadOnlyDictionary <int, PackageDeprecation> packageKeyToDeprecation,
IReadOnlyList <PackageRename> packageRenames,
RenderedMarkdownResult readmeResult)
{
_listPackageItemViewModelFactory.Setup(viewModel, package, currentUser);
SetupCommon(viewModel, package, pushedBy: null, packageKeyToDeprecation: packageKeyToDeprecation);
return(SetupInternal(viewModel, package, allVersions, currentUser, packageKeyToDeprecation, packageRenames, readmeResult));
}
/// <summary>
/// Get the converted HTML from the stored ReadMe markdown.
/// </summary>
/// <param name="package">Package entity associated with the ReadMe.</param>
/// <returns>ReadMe converted to HTML.</returns>
public async Task <RenderedMarkdownResult> GetReadMeHtmlAsync(Package package)
{
var readMeMd = await GetReadMeMdAsync(package);
var result = new RenderedMarkdownResult
{
Content = readMeMd,
ImagesRewritten = false
};
return(string.IsNullOrEmpty(readMeMd) ?
result :
_markdownService.GetHtmlFromMarkdown(readMeMd));
}
/// <summary>
/// Get the converted HTML from the package with Readme markdown.
/// </summary>
/// <param name="readmeFileName">The path of Readme markdown.</param>
/// <param name="packageArchiveReader">
/// The <see cref="PackageArchiveReader"/> instance providing the package metadata.
/// </param>
/// <returns>ReadMe converted to HTML.</returns>
public async Task <RenderedMarkdownResult> GetReadMeHtmlAsync(string readmeFileName, PackageArchiveReader packageArchiveReader, Encoding encoding)
{
var readmeMd = await GetReadMeMdAsync(readmeFileName, packageArchiveReader, encoding);
var result = new RenderedMarkdownResult
{
Content = readmeMd,
ImagesRewritten = false
};
return(string.IsNullOrEmpty(readmeMd) ?
result :
_markdownService.GetHtmlFromMarkdown(readmeMd));
}
public DisplayPackageViewModel Create(
Package package,
IReadOnlyCollection <Package> allVersions,
User currentUser,
IReadOnlyDictionary <int, PackageDeprecation> packageKeyToDeprecation,
IReadOnlyList <PackageRename> packageRenames,
RenderedMarkdownResult readmeResult)
{
var viewModel = new DisplayPackageViewModel();
return(Setup(
viewModel,
package,
allVersions,
currentUser,
packageKeyToDeprecation,
packageRenames,
readmeResult));
}
public RenderedMarkdownResult GetHtmlFromMarkdown(string markdownString, int incrementHeadersBy)
{
var output = new RenderedMarkdownResult()
{
ImagesRewritten = false,
Content = ""
};
var readmeWithoutBom = markdownString.StartsWith("\ufeff") ? markdownString.Replace("\ufeff", "") : markdownString;
// HTML encode markdown, except for block quotes, to block inline html.
var encodedMarkdown = EncodedBlockQuotePattern.Replace(HttpUtility.HtmlEncode(readmeWithoutBom), "> ");
var settings = CommonMarkSettings.Default.Clone();
settings.RenderSoftLineBreaksAsLineBreaks = true;
// Parse executes CommonMarkConverter's ProcessStage1 and ProcessStage2.
var document = CommonMarkConverter.Parse(encodedMarkdown, settings);
foreach (var node in document.AsEnumerable())
{
if (node.IsOpening)
{
var block = node.Block;
if (block != null)
{
switch (block.Tag)
{
// Demote heading tags so they don't overpower expander headings.
case BlockTag.AtxHeading:
case BlockTag.SetextHeading:
var level = (byte)Math.Min(block.Heading.Level + incrementHeadersBy, 6);
block.Heading = new HeadingData(level);
break;
// Decode preformatted blocks to prevent double encoding.
// Skip BlockTag.BlockQuote, which are partially decoded upfront.
case BlockTag.FencedCode:
case BlockTag.IndentedCode:
if (block.StringContent != null)
{
var content = block.StringContent.TakeFromStart(block.StringContent.Length);
var unencodedContent = HttpUtility.HtmlDecode(content);
block.StringContent.Replace(unencodedContent, 0, unencodedContent.Length);
}
break;
}
}
var inline = node.Inline;
if (inline != null)
{
if (inline.Tag == InlineTag.Link)
{
// Allow only http or https links in markdown. Transform link to https for known domains.
if (!PackageHelper.TryPrepareUrlForRendering(inline.TargetUrl, out string readyUriString))
{
inline.TargetUrl = string.Empty;
}
else
{
inline.TargetUrl = readyUriString;
}
}
else if (inline.Tag == InlineTag.Image)
{
if (!PackageHelper.TryPrepareUrlForRendering(inline.TargetUrl, out string readyUriString, rewriteAllHttp: true))
{
inline.TargetUrl = string.Empty;
}
else
{
output.ImagesRewritten = output.ImagesRewritten || (inline.TargetUrl != readyUriString);
inline.TargetUrl = readyUriString;
}
}
}
}
}
private DisplayPackageViewModel SetupInternal(
DisplayPackageViewModel viewModel,
Package package,
IReadOnlyCollection <Package> allVersions,
User currentUser,
IReadOnlyDictionary <int, PackageDeprecation> packageKeyToDeprecation,
IReadOnlyDictionary <int, IReadOnlyList <PackageVulnerability> > packageKeyToVulnerabilities,
IReadOnlyList <PackageRename> packageRenames,
RenderedMarkdownResult readmeResult)
{
var dependencies = package.Dependencies.ToList();
viewModel.Dependencies = new DependencySetsViewModel(dependencies);
var packageHistory = allVersions
.OrderByDescending(p => new NuGetVersion(p.Version))
.ToList();
var pushedByCache = new Dictionary <User, string>();
viewModel.PackageVersions = packageHistory
.Select(
p =>
{
var vm = new DisplayPackageViewModel();
_listPackageItemViewModelFactory.Setup(vm, p, currentUser);
return(SetupCommon(vm, p, GetPushedBy(p, currentUser, pushedByCache), packageKeyToDeprecation, packageKeyToVulnerabilities));
})
.ToList();
viewModel.PushedBy = GetPushedBy(package, currentUser, pushedByCache);
viewModel.PackageFileSize = package.PackageFileSize;
viewModel.LatestSymbolsPackage = package.LatestSymbolPackage();
viewModel.LatestAvailableSymbolsPackage = viewModel.LatestSymbolsPackage != null && viewModel.LatestSymbolsPackage.StatusKey == PackageStatus.Available
? viewModel.LatestSymbolsPackage
: package.LatestAvailableSymbolPackage();
if (packageHistory.Any())
{
// calculate the number of days since the package registration was created
// round to the nearest integer, with a min value of 1
// divide the total download count by this number
viewModel.TotalDaysSinceCreated = Convert.ToInt32(Math.Max(1, Math.Round((DateTime.UtcNow - packageHistory.Min(p => p.Created)).TotalDays)));
viewModel.DownloadsPerDay = viewModel.TotalDownloadCount / viewModel.TotalDaysSinceCreated; // for the package
viewModel.DownloadsPerDayLabel = viewModel.DownloadsPerDay < 1 ? "<1" : viewModel.DownloadsPerDay.ToNuGetNumberString();
// Lazily load the package types from the database.
viewModel.IsDotnetToolPackageType = package.PackageTypes.Any(e => e.Name.Equals("DotnetTool", StringComparison.OrdinalIgnoreCase));
viewModel.IsDotnetNewTemplatePackageType = package.PackageTypes.Any(e => e.Name.Equals("Template", StringComparison.OrdinalIgnoreCase));
}
if (packageKeyToDeprecation != null && packageKeyToDeprecation.TryGetValue(package.Key, out var deprecation))
{
viewModel.AlternatePackageId = deprecation.AlternatePackageRegistration?.Id;
var alternatePackage = deprecation.AlternatePackage;
if (alternatePackage != null)
{
// A deprecation should not have both an alternate package registration and an alternate package.
// In case a deprecation does have both, we will hide the alternate package registration's ID in this model.
viewModel.AlternatePackageId = alternatePackage?.Id;
viewModel.AlternatePackageVersion = alternatePackage?.Version;
}
viewModel.CustomMessage = deprecation.CustomMessage;
}
if (packageRenames != null && packageRenames.Count != 0)
{
viewModel.PackageRenames = packageRenames;
if (package.PackageRegistration?.RenamedMessage != null)
{
viewModel.RenamedMessage = package.PackageRegistration.RenamedMessage;
}
}
viewModel.ReadMeHtml = readmeResult?.Content;
viewModel.ReadMeImagesRewritten = readmeResult != null ? readmeResult.ImagesRewritten : false;
viewModel.ReadmeImageSourceDisallowed = readmeResult != null ? readmeResult.ImageSourceDisallowed : false;
viewModel.HasEmbeddedIcon = package.HasEmbeddedIcon;
return(viewModel);
}