private static void ProcessPackage(Packages value, ErrorReporting reporting)
{
// Check for an empty file, where no resources/assets are listed.
if (value.Count <= 0)
{
reporting.AddWarning("Package contains 0 assets");
}
// Check that duplicate paths are reported as warnings.
value
.Select(
s =>
new
{
Package = s.Key,
Dupes = value[s.Key].Duplicates().ToList()
})
.Where(s => s.Dupes.Count > 0)
.ToList()
.ForEach(
s =>
reporting.AddWarning(
string.Format("Package: {0} contains a duplicate asset paths:\n {1}",
s.Package,
string.Join("\n\t", s.Dupes.ToArray()))));
// Check for infinite recursive includes of packages.
}
public PackageProcessing(IPathResolver resolver, Packages packages)
{
Reporting = new ErrorReporting();
// Process after setting up Info, Warn, and Errs
ProcessPackage(packages, Reporting);
Content = new ContentProvider(resolver, Reporting);
Packages = ProcessPackageReferences(packages, Reporting, new HashSet<string>());
}
private static Packages ProcessPackageReferences(
Packages packages,
ErrorReporting reporting,
HashSet<string> packagesProcessedAlready)
{
return
packages.ToDictionary(
s => s.Key,
s =>
ExpandAssets(s.Key, packages, null, reporting)
.Distinct()
.ToList());
}
/// <summary>
/// Reads the given file from disk if it exists, otherwise it logs an error,
/// and returns an empty string.
/// </summary>
/// <param name="filename">
/// Path to a text file containing an asset's text.
/// </param>
/// <param name="reporting">
/// Error collecting class.
/// </param>
/// <returns>
/// The contents of the file, or empty string.
/// </returns>
private string ReadContent(string filename, ErrorReporting reporting)
{
if (File.Exists(filename))
{
return File.ReadAllText(filename);
}
var fn = Resolver.ResolvePath(filename);
if (File.Exists(fn))
{
return File.ReadAllText(fn);
}
// Have a filename that doesn't exist, so we log it as an error.
reporting.AddError(
string.Format("Could not find file: {0}", filename));
return "";
}
private static IEnumerable<string> ExpandAssets(
string referencingFile,
Packages packages,
HashSet<string> alreadyExpanded,
ErrorReporting reporting)
{
return
packages.ContainsKey(referencingFile)
? packages[referencingFile]
.SelectMany(
packageFile =>
packageFile.EndsWith(".package")
? ExpandPackage(
referencingFile,
packageFile,
packages,
alreadyExpanded ?? new HashSet<string> { referencingFile },
reporting)
: IncludeAsset(packageFile))
: new List<string>();
}
/// <summary>
/// Given that s is a .package path this will return the list of files
/// for that package after recursively expanding that .package file.
/// </summary>
/// <param name="referencingFile">
/// The package where this the assetFile is referenced.
/// </param>
/// <param name="packageFile">
/// A .package file.
/// </param>
/// <param name="packages">
/// The set of packages being processed.
/// </param>
/// <returns>
/// List of assets for the package s, where every .package has been expanded.
/// </returns>
private static IEnumerable<string> ExpandPackage(
string referencingFile,
string packageFile,
Packages packages,
HashSet<string> alreadyExpanded,
ErrorReporting reporting)
{
// Have 2 cases:
// case 1: packages contains reference.
// case 2: packages DOES NOT contain reference.
if (packages.ContainsKey(packageFile))
{
if (alreadyExpanded.Contains(packageFile))
{
reporting.AddError(
string.Format(
"Already included package:"
+ "\n\t{0} and including it again would cause infinite recursion."
+ "\n\tNo further expansion done.",
packageFile));
return new List<string>();
}
else
{
alreadyExpanded.Add(packageFile);
return ExpandAssets(packageFile, packages, alreadyExpanded, reporting);
}
}
else
{
reporting.AddWarning(
string.Format(
"Could not find package: {0}, as referenced in {1}",
packageFile,
referencingFile));
return new List<string>();
}
}
public ContentProvider(IPathResolver resolver, ErrorReporting reporting)
{
Content = new Dictionary<string, string>();
Resolver = resolver;
Reporting = reporting;
}