/// <summary>
/// Initializes a new instance of the <see cref="ZipCompilation" /> class.
/// </summary>
public ZipCompilation()
{
//create the inner Compilation
InnerCompilation = new XmlCompilation();
Id = Guid.NewGuid();
ExtractionPath = Path.GetTempPath(); //set extraction path for this Compilation
}
/// <summary>
/// Retrieves the Compilation at the specified url.
/// </summary>
public override ICompilation Retrieve(String fileName)
{
XmlSerializer CompilationSerializer = new XmlSerializer(typeof(XmlCompilation));
using (FileStream readFileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read)) {
XmlCompilation Compilation = (XmlCompilation)CompilationSerializer.Deserialize(readFileStream);
Compilation.Url = readFileStream.Name;
//keep the filename of the storage used (use the path from the filestream, because it is absolute; the current directory was applied if no path was available beforehand)
Compilation.IsDirty = false; //explicitly set false, since we just have loaded the data
return(Compilation);
}
}
/// <summary>
/// Retrieves the stored Compilation from the specified url.
/// </summary>
public override ICompilation Retrieve(String url)
{
ZipCompilation retrieved = new ZipCompilation();
retrieved.ExtractionPath = Path.GetTempPath(); //set extraction path for the retrieved Compilation
IEnumerable <string> filenames = DecompressFile(url, retrieved.ExtractionPath);
//find the Compilation file
string CompilationUnzippedFileName = (from unzipfileName in filenames
where
Path.GetExtension(unzipfileName)
.Equals(XmlCompilation.DefaultExtension)
select unzipfileName).First();
XmlSerializer CompilationSerializer = new XmlSerializer(typeof(XmlCompilation));
using (
FileStream readFileStream = new FileStream(CompilationUnzippedFileName, FileMode.Open, FileAccess.Read,
FileShare.Read)) {
XmlCompilation xmlCompilation = (XmlCompilation)CompilationSerializer.Deserialize(readFileStream);
//now with the retrived XML Compilation, fill the properties of the retrieved instance
retrieved.Tracks = xmlCompilation.Tracks;
//make sure, the path to the compilation is absolute
retrieved.Url = Path.GetFullPath(url);
///set the Compilation media path to the temporary directory, so that the track media
///files are searched and found in there.
retrieved.MediaPath = retrieved.ExtractionPath;
retrieved.Title = xmlCompilation.Title;
}
///remove the path information from the track media files, so that they are not searched with
///that absolute path.
foreach (Track item in retrieved.Tracks)
{
item.Url = Path.GetFileName(item.Url); //remember only filename (with extension)
}
retrieved.IsDirty = false; //explicitly set false, since we just have loaded the data
return(retrieved);
}
