fix cover for non utf-8 txt files

txt.js/txt.py

@@ -12,9 +12,19 @@ root_dir = os.path.normpath(os.path.abspath(os.path.dirname(__file__)))
 os.chdir(root_dir)
 
 
+def decode_line(line):
+    try:
+        line = line.decode('utf-8')
+    except:
+        try:
+            line = line.decode('latin-1')
+        except:
+            line = line.decode('utf-8', errors='replace')
+    return line
+
 def render(infile, outfile):
 
-    with open(infile) as f:
+    with open(infile, 'rb') as f:
 
         image_size = (768, 1024)
         margin = 64
@@ -27,6 +37,7 @@ def render(infile, outfile):
         image = Image.new('L', image_size, (255))
 
         for line in f:
+            line = decode_line(line)
 
             for line_ in line.strip().split('\r'):