Skip submodules

If submodule used to be in history but since then was deleted,
`git show <commit>:submodule_path` would produce `bad object` error
as no info about given submodule can be found in HEAD.

gitinspector/blame.py

@@ -123,9 +123,10 @@ PROGRESS_TEXT = N_("Checking how many rows belong to each author (2 of 2): {0:.0
 class Blame(object):
 	def __init__(self, repo, hard, useweeks, changes):
 		self.blames = {}
-		ls_tree_r = subprocess.Popen(["git", "ls-tree", "--name-only", "-r", changes.ref], bufsize=1,
+		ls_tree_r = subprocess.Popen(["git", "ls-tree", "-r", changes.ref], bufsize=1,
 		                             stdout=subprocess.PIPE).stdout
-		lines = ls_tree_r.readlines()
+                # skip submodules
+		lines = [ l.split("\t",1)[-1] for l in ls_tree_r.readlines() if not l.startswith("160000") ]
 		ls_tree_r.close()
 
 		progress_text = _(PROGRESS_TEXT)

gitinspector/metrics.py

@@ -44,10 +44,14 @@ class MetricsLogic(object):
 		self.cyclomatic_complexity = {}
 		self.cyclomatic_complexity_density = {}
 
-		ls_tree_r = subprocess.Popen(["git", "ls-tree", "--name-only", "-r", ref], bufsize=1,
+		ls_tree_r = subprocess.Popen(["git", "ls-tree", "-r", ref], bufsize=1,
 		                             stdout=subprocess.PIPE).stdout
+  
+
 
 		for i in ls_tree_r.readlines():
+			if i.startswith("160000"): continue  # skip submodules
+			i = i.split("\t")[-1]
 			i = i.strip().decode("unicode_escape", "ignore")
 			i = i.encode("latin-1", "replace")
 			i = i.decode("utf-8", "replace").strip("\"").strip("'").strip()