Library FSTrees and unique ids

I now make a filesystem tree to store the library.  In addition, I am
using inode number to track songs.  This should make it easier to detect
moved files (inode number matches but path doesn't).

libsaria/collection/library.py

@@ -1,5 +1,6 @@
 # Bryan Schumaker (11/05/2010)
 
+import os
 import tagpy
 import libsaria
 import string
@@ -10,7 +11,6 @@ fs_tree  = None
 tag_tree = None
 index    = None
 tracks   = None
-next_id  = None
 sources  = None
 size     = None
 visible  = None
@@ -27,7 +27,7 @@ for s in string.lowercase:
 	ttable[ord(s)] = ord(s) - 32
 
 def reset():
-	from libsaria.trees import FSTree
+	from libsaria.trees import FSTree, DLFSTree
 	from tree import DLTree
 	from index import Index
 
@@ -36,16 +36,14 @@ def reset():
 	global fs_tree
 	global tag_tree
 	global sources
-	global next_id
 	global visible
 
 	sources  = FSTree()
 
-	fs_tree  = DLTree()
+	fs_tree  = DLFSTree()
 	tag_tree = DLTree()
 	index    = Index()
 	tracks   = dict()
-	next_id  = 0
 	size     = 0
 	visible  = set()
 	#save()
@@ -55,7 +53,6 @@ def load():
 	#global tag_tree
 	#global index
 	global tracks
-	global next_id
 	global sources
 	#global size
 	#global songs
@@ -65,14 +62,13 @@ def load():
 	#if objects == None or len(objects) != 6:
 		reset()
 		return
-	(sources, tracks, next_id) = objects
-	print next_id
+	(sources, tracks) = objects
 	#(fs_tree, tag_tree, index, tracks, next_id, size) = objects
 	libsaria.event.start("POSTLIBLOAD")
 
 def save():
 	global sources
-	libsaria.data.save( (sources, tracks, next_id), "library", ".lib")
+	libsaria.data.save( (sources, tracks), "library", ".lib")
 
 def walk():
 	return []
@@ -167,18 +163,20 @@ def scan(path):
 	save()
 
 def insert_track(path, ref):
-	global next_id
 	global tracks
 	global ttable
 	global fs_tree
 	tags   = ref.tag()
 	audio  = ref.audioProperties()
+	id     = os.stat(path).st_ino
 	track  = Track(tags, audio)
 	artist = tags.artist or u"Unknown Artist"
 	album  = tags.album  or u"Unknown Album"
 	title  = tags.title  or u"Unknown Title"
-	tracks[next_id] = track
-	next_id += 1
+	fs     = fs_tree.insert_path(path)
+
+	track.fs   = fs
+	tracks[id] = track
 
 def update_path(path):
 	global badfiles

libsaria/collection/track.py

@@ -20,5 +20,5 @@ class Track:
 		else:
 			self.lenstr = lenstr
 
-		#self.fs   = None
+		self.fs   = None
 		#self.tags = None