private void ParseHeader(string line)
{
Tune tune = tunes[tunes.Count - 1];
// this does not handle new global information after the first tune properly
ABCInfo? i = ABCInfo.Parse(line);
if (i.HasValue) {
ABCInfo info = i.Value;
if (info.Identifier == 'T' && strict) {
if (tune.Header.Information.Count != 1 || !(tune.Header.Information.Count > 0 && tune.Header.Information.ContainsKey('X')))
throw new ABCStrictException("Error reading ABC notation, 'T:title' information field is only allowed after 'X:number' field in strict mode.");
}
if (info.Identifier == 'X') {
// start new tune
tune = new Tune();
tunes.Add(tunes.Count, tune);
}
else if (info.Identifier == 'K') {
// start interpreting notes
inTune = true;
}
tune.Header.AddInfo(i.Value);
}
}
private void CalculateDuration(Tune tune)
{
SetDefaultValues();
SetHeaderValues();
SetHeaderValues(selectedTune, true);
TimeSpan dur = TimeSpan.Zero;
bool chord = false;
List <ABCNote> chordNotes = new List <ABCNote>();
while (tokenIndex < tokens.Count)
{
string token = tokens[tokenIndex];
char c = token[0];
if (c == '[' && token == "[")
{
c = '!';
}
switch (c)
{
case ']':
if (chord)
{
chord = false;
var chordLen = GetChord(chordNotes);
dur += chordLen;
}
break;
case '!': // replacement for chord opener
chord = true;
chordNotes.Clear();
break;
case '|':
case ':':
case '[':
if (c == '[' && token.EndsWith("]") && token.Length > 2 && token[2] == ':' && token[1] != '|' && token[1] != ':')
{
InlineInfo(token);
}
break;
case 'z':
case 'Z':
case 'x':
Note rest = GetRest(token);
if (!chord)
{
dur += rest.Length;
}
else
{
chordNotes.Add(new ABCNote(rest, tokenIndex));
}
break;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
case '^':
case '=':
case '_':
Note note = GetNote(token);
if (!chord)
{
dur += note.Length;
}
else
{
chordNotes.Add(new ABCNote(note, tokenIndex));
}
break;
}
tokenIndex++;
}
tunes[selectedTune].Duration = dur;
}
protected virtual void CalculateDuration(Tune tune)
{
SetDefaultValues();
SetHeaderValues();
SetHeaderValues(selectedTune, true);
TimeSpan dur = TimeSpan.Zero;
bool chord = false;
List<ABCNote> chordNotes = new List<ABCNote>();
while (tokenIndex < tokens.Count) {
string token = tokens[tokenIndex];
char c = token[0];
if (c == '[' && token == "[")
c = '!';
switch (c) {
case ']':
if (chord) {
chord = false;
var chordLen = GetChord(chordNotes);
dur += chordLen;
}
break;
case '!': // replacement for chord opener
chord = true;
chordNotes.Clear();
break;
case '|':
case ':':
case '[':
if (c == '[' && token.EndsWith("]") && token.Length > 2 && token[2] == ':' && token[1] != '|' && token[1] != ':')
InlineInfo(token);
break;
case 'z':
case 'Z':
case 'x':
Note rest = GetRest(token);
if (!chord) {
dur += rest.Length;
}
else {
chordNotes.Add(new ABCNote(rest, tokenIndex));
}
break;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
case '^':
case '=':
case '_':
Note note = GetNote(token);
if (!chord) {
dur += note.Length;
}
else {
chordNotes.Add(new ABCNote(note, tokenIndex));
}
break;
}
tokenIndex++;
if (dur > settings.MaxDuration) {
throw new SongDurationException("Song exceeded maximum duration " + settings.MaxDuration);
}
}
tunes[selectedTune].Duration = dur;
}