From: benoit.pin <benoit.pin@fe552daf-6dbe-4428-90eb-1537e0879342>
Date: Fri, 19 Nov 2010 09:17:48 +0000 (+0000)
Subject: Ajout, dans le navigateur des chansons, du la taille du clavier, et du niveau de... 
X-Git-Url: https://scm.cri.mines-paristech.fr/git/minwii.git/commitdiff_plain/00c7d2ee288d92de01920b31c968ada18651d2a4?hp=ebf72d7fe428b8af78d5b5906c4c01e4ef59447c

Ajout, dans le navigateur des chansons, du la taille du clavier, et du niveau de difficulté basé sur les fréquences d'intervalles.


git-svn-id: https://svn.cri.ensmp.fr/svn/minwii/trunk@316 fe552daf-6dbe-4428-90eb-1537e0879342
---

diff --git a/src/minwii/widgets/songfilebrowser.py b/src/minwii/widgets/songfilebrowser.py
index 99f81da..e4ecf1b 100755
--- a/src/minwii/widgets/songfilebrowser.py
+++ b/src/minwii/widgets/songfilebrowser.py
@@ -8,7 +8,11 @@ $URL$
 
 from pgu.gui import FileDialog
 import os
+import tempfile
 from xml.etree import ElementTree
+from minwii.musicxml import musicXml2Song
+
+INDEX_TXT = 'index.txt'
 
 class FileOpenDialog(FileDialog):
     
@@ -41,25 +45,148 @@ class FileOpenDialog(FileDialog):
         files.sort()
         for i in dirs:
             self.list.add(i, image=self.dir_img, value=i)
-
+        
+        xmlFiles = []
         for i in files:
-            if not i.endswith('.xml') : 
+            if not i.endswith('.xml') :
                 continue
             filepath = os.path.join(self.curdir, i)
-            self.list.add(FileOpenDialog.getSongTitle(filepath), value=i)
+            xmlFiles.append(filepath)
+            # self.list.add(FileOpenDialog.getSongTitle(filepath), value=i)
+        
+        if xmlFiles :
+            printableLines = self.getPrintableLines(xmlFiles)
+            for l in printableLines :
+                self.list.add(l[0], value = l[1])
  
         self.list.set_vertical_scroll(0)
     
+    def getPrintableLines(self, xmlFiles) :
+        index = self.getUpdatedIndex(xmlFiles)
+
+        printableLines = []
+        for l in index :
+            l = l.strip()
+            l = l.split('\t')
+            printableLines.append(('%s - %s / %s' % (l[2], l[3], l[4]), l[0]))
+        
+        return printableLines
+    
+    
     @staticmethod
     def getSongTitle(file) :
         it = ElementTree.iterparse(file, ['start', 'end'])
         creditFound = False
+        title = os.path.basename(file)
         
         for evt, el in it :
             if el.tag == 'credit' :
                 creditFound = True
             if el.tag == 'credit-words' and creditFound:
-                return el.text.encode('iso-8859-1')
+                title = el.text
+                break
             if el.tag == 'part-list' :
-                # plus de chance de trouver un titre
-                return os.path.basename(file)
\ No newline at end of file
+                # au delà de ce tag : aucune chance de trouver un titre
+                break
+        return title
+    
+    @staticmethod
+    def getSongMetadata(file) :
+        metadata = {}
+        metadata['title'] = FileOpenDialog.getSongTitle(file).encode('iso-8859-1')
+        metadata['mtime'] = str(os.stat(file).st_mtime)
+        metadata['file'] = os.path.basename(file)
+        song = musicXml2Song(file)
+        metadata['distinctNotes'] = len(song.distinctNotes)
+        
+        histo = song.intervalsHistogram
+        coeffInter = reduce(lambda a, b : a + b,
+                            [abs(k) * v for k, v in histo.items()])
+
+        totInter = reduce(lambda a, b: a+b, histo.values())
+        totInter = totInter - histo.get(0, 0)
+        difficulty = int(round(float(coeffInter) / totInter, 0))
+        metadata['difficulty'] = difficulty
+
+        return metadata
+    
+    def getUpdatedIndex(self, xmlFiles) :
+        indexTxtPath = os.path.join(self.curdir, INDEX_TXT)
+        index = []
+        
+        if not os.path.exists(indexTxtPath) :
+            musicXmlFound = False
+            tmp = tempfile.TemporaryFile(mode='r+')
+            for file in xmlFiles :
+                try :
+                    metadata = FileOpenDialog.getSongMetadata(file)
+                    musicXmlFound = True
+                except ValueError, e :
+                    print e
+                    if e.args and e.args[0] == 'not a musicxml file' :
+                        continue
+                
+                line = '%(file)s\t%(mtime)s\t%(title)s\t%(distinctNotes)d\t%(difficulty)d\n' % metadata
+                index.append(line)
+                tmp.write(line)
+            
+            if musicXmlFound :
+                tmp.seek(0)
+                indexFile = open(indexTxtPath, 'w')
+                indexFile.write(tmp.read())
+                indexFile.close()
+            tmp.close()
+        else :
+            indexedFiles = {}
+            indexTxt = open(indexTxtPath, 'r')
+
+            # check if index is up to date, and update entries if so.
+            for l in filter(None, indexTxt.readlines()) :
+                parts = l.split('\t')
+                fileBaseName, modificationTime = parts[0], parts[1]
+                filePath = os.path.join(self.curdir, fileBaseName)
+
+                if not os.path.exists(filePath) :
+                    continue
+
+                indexedFiles[fileBaseName] = l
+                currentMtime = str(os.stat(filePath).st_mtime)
+                
+                # check modification time missmatch
+                if currentMtime != modificationTime :
+                    try :
+                        metadata = FileOpenDialog.getSongMetadata(filePath)
+                        musicXmlFound = True
+                    except ValueError, e :
+                        print e
+                        if e.args and e.args[0] == 'not a musicxml file' :
+                            continue
+                    
+                    metadata = FileOpenDialog.getSongMetadata(filePath)
+                    line = '%(file)s\t%(mtime)s\t%(title)s\t%(distinctNotes)d\t%(difficulty)d\n' % metadata
+                    indexedFiles[fileBaseName] = line
+            
+            # check for new files.
+            for file in xmlFiles :
+                fileBaseName = os.path.basename(file)
+                if not indexedFiles.has_key(fileBaseName) :
+                    try :
+                        metadata = FileOpenDialog.getSongMetadata(filePath)
+                        musicXmlFound = True
+                    except ValueError, e :
+                        print e
+                        if e.args and e.args[0] == 'not a musicxml file' :
+                            continue
+                
+                    metadata = FileOpenDialog.getSongMetadata(file)
+                    line = '%(file)s\t%(mtime)s\t%(title)s\t%(distinctNotes)d\t%(difficulty)d\n' % metadata
+                    indexedFiles[fileBaseName] = line
+            
+            # ok, the index is up to date !
+            
+            index = indexedFiles.values()
+            index.sort()
+            
+        
+        return index
+        
\ No newline at end of file