/// <summary>
/// Returns the list of files in this catalog that have the specified file contents hash, or an empty list of there are no files with that hash.
/// </summary>
public IReadOnlyList <FileInstance> FindFiles(Hash256 fileContentsHash)
{
if (this.FileInstancesByHash.ContainsKey(fileContentsHash))
{
return(this.FileInstancesByHash[fileContentsHash]);
}
else
{
return(new List <FileInstance>());
}
}
/// <summary>
/// Creates a new <see cref="FileInstance"/> for the specified file.
/// </summary>
private FileInstance createFileInstance(IDirectoryInfo baseDirectory, IFileInfo file)
{
string relativePath = file.GetRelativePath(baseDirectory);
using (System.IO.Stream stream = file.OpenRead())
{
long fileSize = stream.Length;
Hash256 fileContentsHash = Hash256.GetContentsHash(stream);
return(new FileInstance(relativePath, fileSize, fileContentsHash));
}
}
public FileInstance(string relativePath, long fileSize, Hash256 fileContentsHash)
{
this.RelativePath = relativePath;
this.FileSize = fileSize;
this.FileContentsHash = fileContentsHash;
}
public static Catalog Read(IFileInfo fileInfo)
{
using (System.IO.Stream stream = fileInfo.Open(System.IO.FileMode.Open, System.IO.FileAccess.Read))
{
XDocument xDocument = XDocument.Load(stream);
string baseDirectoryPath = (string)xDocument.Element("Catalog").Element("BaseDirectoryPath");
DateTime catalogedOn = (DateTime)xDocument.Element("Catalog").Element("CatalogedOn");
DateTime updatedOn = (DateTime)xDocument.Element("Catalog").Element("UpdatedOn");
List <FileInstance> fileInstances = xDocument.Element("Catalog").Element("Files").Elements("f")
.Select((element) => new FileInstance(element.Attribute("p").Value, (long)element.Attribute("l"), Hash256.Parse(element.Attribute("h").Value)))
.ToList();
return(new Catalog(baseDirectoryPath, catalogedOn, updatedOn, fileInstances));
}
}
