xtreme programming step1 : gestion des fichiers xml dans la boîte de dialogue d'ouver...

[minwii.git] / src / songs / musicxmltosong.py

diff --git a/src/songs/musicxmltosong.py b/src/songs/musicxmltosong.py
index 25822b3..39df188 100755 (executable)
--- a/src/songs/musicxmltosong.py
+++ b/src/songs/musicxmltosong.py
@@ -9,7 +9,7 @@ import sys
 from types import StringTypes
 from xml.dom.minidom import parse
 from optparse import OptionParser
-from Song import Song
+#from Song import Song
 
 # Do4 <=> midi 60
 OCTAVE_REF = 4
@@ -20,35 +20,95 @@ DIATO_SCALE = {'C' : 60,
                'G' : 67,
                'A' : 69,
                'B' : 71}
+
+FR_NOTES = {'C' : u'Do',
+            'D' : u'Ré',
+            'E' : u'Mi',
+            'F' : u'Fa',
+            'G' : u'Sol',
+            'A' : u'La',
+            'B' : u'Si'}
+
 _marker = []
 
 class Part(object) :
     
-    def __init__(self, node) :
+    def __init__(self, node, autoDetectChorus=True) :
         self.node = node
         self.notes = []
         self._parseMusic()
+        self.verses = [[]]
+        self.chorus = []
+        if autoDetectChorus :
+            self._findChorus()
+        self._findVersesLoops()
     
     def _parseMusic(self) :
         divisions = 0
-        
+        noteIndex = 0
+        next = previous = None
         for measureNode in self.node.getElementsByTagName('measure') :
+            # divisions de la noire
             divisions = int(_getNodeValue(measureNode, 'attributes/divisions', divisions))
-            next = previous = None
-            for i, noteNode in enumerate(measureNode.getElementsByTagName('note')) :
+            for noteNode in measureNode.getElementsByTagName('note') :
                 note = Note(noteNode, divisions, previous)
                 self.notes.append(note)
                 try :
-                    self.notes[i-1].next = note
+                    self.notes[noteIndex-1].next = note
                 except IndexError:
                     pass
                 previous = note
+                noteIndex += 1
+
+    def _findChorus(self):
+        """ le refrain correspond aux notes pour lesquelles
+            il n'existe q'une seule syllable attachée.
+        """
+        start = stop = None
+        for i, note in enumerate(self.notes) :
+            ll = len(note.lyrics)
+            if start is None and ll == 1 :
+                start = i
+            elif start is not None and ll > 1 :
+                stop = i
+                break
+        self.chorus = self.notes[start:stop]
     
+    def _findVersesLoops(self) :
+        "recherche des couplets / boucles"
+        verse = self.verses[0]
+        for note in self.notes[:-1] :
+            verse.append(note)
+            ll = len(note.lyrics)
+            nll = len(note.next.lyrics)
+            if ll != nll :
+                verse = []
+                self.verses.append(verse)
+        verse.append(self.notes[-1])
+        
+    
+    def iterNotes(self) :
+        "exécution de la chanson avec l'alternance couplets / refrains"
+        for verse in self.verses :
+            print "---partie---"
+            repeats = len(verse[0].lyrics)
+            if repeats > 1 :
+                for i in range(repeats) :
+                    # couplet
+                    print "---couplet%d---" % i
+                    for note in verse :
+                        yield note, i
+                    # refrain
+                    print "---refrain---"
+                    for note in self.chorus :
+                        yield note, 0
+            else :
+                for note in verse :
+                    yield note, 0
+        
     def pprint(self) :
-        for note in self.notes :
-            print note.name, note.midi, note.duration, note.lyrics
-                
-                
+        for note, verseIndex in self.iterNotes() :
+            print note.nom, note.name, note.midi, note.duration, note.lyrics[verseIndex]
         
         
 
@@ -88,15 +148,34 @@ class Note(object) :
         name = '%s%s' % (name, abs(self.alter) * alterext)
         return name
     
+    @property
+    def nom(self) :
+        name = FR_NOTES[self.step]
+        if self.alter < 0 :
+            alterext = 'b'
+        else :
+            alterext = '#'
+        name = '%s%s' % (name, abs(self.alter) * alterext)
+        return name
+    
 
 class Lyric(object) :
+    
+    _syllabicModifiers = {
+        'single' : '%s',
+        'begin'  : '%s -',
+        'middle' : '- %s -',
+        'end'    : '- %s'
+        }
+    
     def __init__(self, node) :
         self.node = node
         self.syllabic = _getNodeValue(node, 'syllabic', 'single')
         self.text = _getNodeValue(node, 'text')
     
     def __str__(self) :
-        return self.text.encode('utf-8')
+        text = self._syllabicModifiers[self.syllabic] % self.text
+        return text.encode('utf-8')
     __repr__  = __str__
         
         
@@ -113,7 +192,7 @@ def _getNodeValue(node, path, default=_marker) :
         else :
             return default
 
-def musicXml2Song(input, output, partIndex=0, printNotes=False) :
+def musicXml2Song(input, partIndex=0, printNotes=False) :
     if isinstance(input, StringTypes) :
         input = open(input, 'r')
     
@@ -130,6 +209,9 @@ def musicXml2Song(input, output, partIndex=0, printNotes=False) :
     
     if printNotes :
         part.pprint()
+
+    return part
+
     
     # divisions de la noire
 #    divisions = 0
@@ -166,10 +248,10 @@ def main() :
     
     options, args = op.parse_args()
     
-    if len(args) != 2 :
+    if len(args) != 1 :
         raise SystemExit(op.format_help())
     
-    musicXml2Song(args[0], args[1], partIndex=options.partIndex, printNotes=options.printNotes)
+    musicXml2Song(args[0], partIndex=options.partIndex, printNotes=options.printNotes)