public static ChordPattern FromString(string pattern)
{
if (string.IsNullOrEmpty(pattern))
{
throw new ArgumentNullException("pattern");
}
string[] words = pattern.Split(new char[] { ',' });
var cp = new ChordPattern();
foreach (string word in words.Where(w => !String.IsNullOrWhiteSpace(w)))
{
string candidate = word.Trim();
Accidental accidental = Accidental.FromString(candidate);
if (accidental != null)
{
candidate = candidate.Substring(1);
}
int value = Convert.ToInt32(candidate, CultureInfo.CurrentCulture);
if (value > 0)
{
if (accidental != null)
{
value += accidental.Value;
}
var degrees = new ScaleDegree[]
{
ScaleDegree.First,
ScaleDegree.Second,
ScaleDegree.Third,
ScaleDegree.Fourth,
ScaleDegree.Fifth,
ScaleDegree.Sixth,
ScaleDegree.Seventh,
ScaleDegree.Octave,
ScaleDegree.FlatNinth,
ScaleDegree.Ninth,
ScaleDegree.SharpNinth,
ScaleDegree.Eleventh,
ScaleDegree.SharpEleventh,
ScaleDegree.Thirteen
};
if (value < 1 || value > degrees.Length)
{
throw new ArgumentOutOfRangeException("pattern", string.Format(CultureInfo.CurrentCulture, "Don't understand chord degree {0} -> {1}", words, value));
}
cp.Add(degrees[value - 1]);
}
}
return(cp);
}
public static Note FromName(string note, MidiOctaveFormat format)
{
const int MinimumTextLength = 2;
if (String.IsNullOrEmpty(note) || note.Length < MinimumTextLength)
{
throw new NoteFormatException("Note text is too short");
}
if (!Char.IsLetter(note.First()))
{
throw new NoteFormatException("Note must start with a letter");
}
Accidental accidental = Accidental.FromString(note.Substring(1, 1));
int NamePartLength = 1;
if (accidental != null)
{
NamePartLength = 2;
}
string scaleDegreeText = note.Substring(0, NamePartLength).ToUpper();
int scaleDegree = 0;
try
{
scaleDegree = NoteValues[scaleDegreeText];
}
catch (KeyNotFoundException e)
{
throw new NoteFormatException(scaleDegreeText, e);
}
string octaveText = note.Substring(NamePartLength);
int octaveValue = Convert.ToInt32(octaveText, CultureInfo.CurrentCulture);
return(new Note(scaleDegree, octaveValue, format));
}
public static IntervalPattern FromString(string pattern)
{
if (string.IsNullOrEmpty(pattern))
{
throw new ArgumentNullException("pattern");
}
string[] words = pattern.Split(new char[] { ',' });
var ip = new IntervalPattern();
foreach (string word in words.Where(w => !String.IsNullOrWhiteSpace(w)))
{
string candidate = word.Trim();
Accidental accidental = Accidental.FromString(candidate);
if (accidental != null)
{
candidate = candidate.Substring(1);
}
int value = Convert.ToInt32(candidate, CultureInfo.CurrentCulture);
if (value > 0)
{
if (accidental != null)
{
value += accidental.Value;
}
ip.Add(new Interval(value));
}
}
return(ip);
}