/// <summary>
/// Writes the given metadata into the given stream using the ID3v1.1 standard
/// NB : Metadata fields that are not supported by ID3v1.1 standard (e.g. Composer) won't be written into the stream, even though their value are set
/// </summary>
/// <param name="tag">Metadata to be written</param>
/// <param name="w">Stream to be used</param>
/// <returns>True if operation completed successfuly; else false</returns>
protected override Int32 write(TagData tag, BinaryWriter w, String zone)
{
// ID3v1 tags are C-String(null-terminated)-based tags
// they are not unicode-encoded, hence the use of ReadOneByteChars
w.Write(ID3V1_ID.ToCharArray());
w.Write(Utils.BuildStrictLengthString(tag.Title, 30, '\0').ToCharArray());
w.Write(Utils.BuildStrictLengthString(tag.Artist, 30, '\0').ToCharArray());
w.Write(Utils.BuildStrictLengthString(tag.Album, 30, '\0').ToCharArray());
// ID3v1 standard requires the year
w.Write(Utils.BuildStrictLengthString(TrackUtils.ExtractStrYear(tag.RecordingYear), 4, '\0').ToCharArray());
w.Write(Utils.BuildStrictLengthString(tag.Comment, 28, '\0').ToCharArray());
// ID3v1.1 standard
w.Write('\0');
w.Write((Byte)Math.Min(TrackUtils.ExtractTrackNumber(tag.TrackNumber), Byte.MaxValue));
Byte genre = 0;
if (tag.Genre != null)
{
for (Byte i = 0; i < MAX_MUSIC_GENRES; i++)
{
if (tag.Genre.ToUpper().Equals(MusicGenre[i].ToUpper()))
{
genre = i;
break;
}
}
}
w.Write(genre);
return(7);
}
public void TrackUtils_ExtractStrYear()
{
Assert.AreEqual("1952", TrackUtils.ExtractStrYear("1952"));
Assert.AreEqual("1952", TrackUtils.ExtractStrYear("1952.1"));
Assert.AreEqual("1952", TrackUtils.ExtractStrYear("1952,1"));
Assert.AreEqual("1952", TrackUtils.ExtractStrYear("1952aaa"));
Assert.AreEqual("1952", TrackUtils.ExtractStrYear("aaa1952"));
Assert.AreEqual("1952", TrackUtils.ExtractStrYear("aa1952aa"));
Assert.AreEqual("", TrackUtils.ExtractStrYear(""));
Assert.AreEqual("", TrackUtils.ExtractStrYear(null));
Assert.AreEqual("", TrackUtils.ExtractStrYear("aaaa"));
Assert.AreEqual("", TrackUtils.ExtractStrYear("999"));
}
