Upgrade code to be compatible with Python 3 (#925)

.gitignore

@@ -130,3 +130,4 @@ mac/install_manifest.txt
 mac/cmake_install.cmake
 mac/CMakeFiles/
 mac/CMakeCache.txt
+*.py.bak

api/api_support.py

@@ -1,3 +1,4 @@
+from builtins import str
 import ccextractor as cc
 import ccx_to_python_g608 as g608
 import python_srt_generator as srt_generator

api/api_testing.py

@@ -1,3 +1,4 @@
+from __future__ import print_function
 ###
 #MANDATORY UPDATES IN EVERY PYTHON SCRIPT
 ###
@@ -7,7 +8,7 @@ import ccextractor as cc
 
 
 def callback(line, encoding):
-    print line
+    print(line)
 
 
 def init_ccextractor(callback):

api/ccx_to_python_g608.py

@@ -1,3 +1,5 @@
+from __future__ import print_function
+from builtins import str
 def g608_grid_former(line,text,color,font):
     if "text[" in line:
         line = str(line.split(":", 1)[1])
@@ -57,5 +59,5 @@ def return_g608_grid(case,text,color,font):
         if font:
             ret_val['font']=font
     else:
-        print help_string
+        print(help_string)
     return ret_val

api/python_srt_generator.py

@@ -1,3 +1,6 @@
+from __future__ import print_function
+from builtins import zip
+from builtins import str
 import ccextractor as cc
 import re
 """
@@ -119,23 +122,23 @@ def comparing_text_font_grids(text, font, color):
             if not i[1]:
                 final.append(i[0])
             else:
-                print "error"
+                print("error")
     return (final,font,color)
 
     
 def generate_output_srt(filename,d, encoding):
-    if encoding in encodings_map.keys():
+    if encoding in list(encodings_map.keys()):
         if  encoding!='0':
             encoding_format = encodings_map[encoding]
         else:
             encoding_format = ""
     else:
-        print "encoding error in python"
+        print("encoding error in python")
         return
     if encoding_format:
-        d['text'] = [unicode(item,encoding_format) for item in d['text']]
+        d['text'] = [str(item,encoding_format) for item in d['text']]
     else:
-        d['text'] = [unicode(item) for item in d['text']]
+        d['text'] = [str(item) for item in d['text']]
     d['text'],d['font'],d['color']= comparing_text_font_grids(d['text'],d['font'],d['color'])
     for item in d['text']:
         if item.count(" ")<32:

api/recursive_tester.py

@@ -1,3 +1,4 @@
+from __future__ import print_function
 import sys
 import os
 import subprocess
@@ -6,11 +7,11 @@ output_formats = ['.srt','.ass','.ssa','.webvtt','.sami','.txt','.original','.py
 args_list = sys.argv[1:]
 args_count = len(args_list)
 if args_count>1:
-    print "wrong usage"
+    print("wrong usage")
     exit(0)
 directory = args_list[0]
 if not os.path.isdir(directory):
-    print "error: path given is not a directory"
+    print("error: path given is not a directory")
     exit(0)
 files = []
 for item in os.listdir(directory):
@@ -18,8 +19,8 @@ for item in os.listdir(directory):
     if ext not in output_formats:
         files.append(os.path.join(directory,item))
 for sample in files:
-    print "Processing file: "+sample
+    print("Processing file: "+sample)
     #command=['../linux/ccextractor',sample]
     command = ['python','api_testing.py',sample]
     subprocess.call(command)
-    print "Finished processing file: "+sample
+    print("Finished processing file: "+sample)

tools/histogram.py

@@ -3,6 +3,9 @@
 # Email    : harryyunull@gmail.com
 # Link     : https://github.com/harrynull
 
+from __future__ import print_function
+from builtins import range
+from builtins import object
 Version = "1.0.0"
 
 import sys
@@ -10,7 +13,7 @@ import time
 import datetime
 from io import open
 
-class Line:
+class Line(object):
     def __init__(self, lines):
         lines = [line.replace("\n", "").strip() for line in lines]
         self.id = int(lines[0]) # the first line is the number of the subtile