public static async Task <PhoneLibraryIndex> GetPhoneLibraryIndex(string phoneName)
{
var index = new PhoneLibraryIndex();
try
{
var musicFolder = await GetPhoneMusicFolder(phoneName);
var library = await musicFolder.GetFileAsync("Library.xml").AsTask();
using (var stream = await library.OpenReadAsync().AsTask())
using (var dataReader = new DataReader(stream))
{
var streamLength = (uint)stream.Size;
await dataReader.LoadAsync(streamLength).AsTask();
var contents = dataReader.ReadString(streamLength);
var xml = XDocument.Parse(contents);
foreach (var file in xml.Descendants("File"))
{
index.AddOrUpdateFile(new PhoneMusicFile {
Path = file.Attribute("Path").Value, Version = file.Attribute("Version").Value
});
}
return(index);
}
}
catch
{
return(index);
}
}
public static async Task SavePhoneLibraryIndex(StorageFolder phoneMusicLibrary, PhoneLibraryIndex phoneLibraryIndex)
{
var xml = new XDocument(
new XElement("Library",
phoneLibraryIndex.GetAllFiles().Select(x =>
{
var element = new XElement("File");
element.SetAttributeValue("Path", x.Path);
element.SetAttributeValue("Version", x.Version);
return(element);
})
)
);
var xmlFile = await phoneMusicLibrary.CreateFileAsync("Library.xml", CreationCollisionOption.ReplaceExisting).AsTask();
using (var textStream = await xmlFile.OpenAsync(FileAccessMode.ReadWrite).AsTask())
using (var dataWriter = new DataWriter(textStream))
{
dataWriter.WriteString(xml.ToString());
await dataWriter.StoreAsync().AsTask();
}
}