+# -*- coding: utf-8 -*-
+import lilylib as ly
+import musicexp
+
+def rational_to_lily_duration(rational_len):
+ d = musicexp.Duration()
+
+ rational_len.normalize_self()
+ d_log = {1: 0, 2: 1, 4:2, 8:3, 16:4, 32:5, 64:6, 128:7, 256:8, 512:9}.get(rational_len.denominator(), -1)
+
+ # Duration of the form 1/2^n or 3/2^n can be converted to a simple lilypond duration
+ dots = {1: 0, 3: 1, 7: 2, 15: 3, 31: 4, 63: 5, 127: 6}.get(rational_len.numerator(), -1)
+ if(d_log >= dots >= 0):
+ # account for the dots!
+ d.duration_log = d_log - dots
+ d.dots = dots
+ elif(d_log >= 0):
+ d.duration_log = d_log
+ d.factor = Rational(rational_len.numerator())
+ else:
+ ly.warning(_("Encountered rational duration with denominator %s, "
+ "unable to convert to lilypond duration") %
+ rational_len.denominator())
+ # TODO: Test the above error message
+ return None
+
+ return d
+
+def musicxml_step_to_lily(step):
+ if step:
+ return (ord(step) - ord('A') + 7 - 2) % 7
+ else:
+ return None
+
+class Marker(musicexp.Music):
+ def __init__(self):
+ self.direction = 0
+ self.event = None
+ def print_ly(self, printer):
+ ly.warning(_("Encountered unprocessed marker %s\n") % self)
+ pass
+ def ly_expression(self):
+ return ""
+
+class RepeatMarker(Marker):
+ def __init__(self):
+ Marker.__init__(self)
+ self.times = 0
+
+class EndingMarker(Marker):
+ pass