use a text format for the path file, for easy edition

Still needs a migration script

autojump

@@ -21,19 +21,16 @@ frequently used places."""
 
 from __future__ import division, print_function
 
-try: # fix to get optimised pickle in python < 3
-    import cPickle as pickle
-except ImportError:
-    import pickle
-
 import getopt
 from sys import argv, stderr, version_info, exit
 from tempfile import NamedTemporaryFile
 from operator import itemgetter
 import os
+
 MAX_KEYWEIGHT = 1000
 MAX_STORED_PATHS = 600
 COMPLETION_SEPARATOR = '__'
+
 if "AUTOJUMP_DATA_DIR" in os.environ:
     CONFIG_DIR = os.environ.get("AUTOJUMP_DATA_DIR")
 else:
@@ -57,12 +54,14 @@ def save(path_dict, dic_file):
     # Otherwise, fail quietly
     if (not os.path.exists(dic_file)) or os.getuid() == os.stat(dic_file)[4]:
         temp = NamedTemporaryFile(dir=CONFIG_DIR, delete=False)
-        pickle.dump(path_dict, temp, 2)
+        for path in path_dict:
+            print(path_dict[path])
+            temp.write((repr(path_dict[path]) + "\t" + path + "\n").encode("utf-8"))
         temp.flush()
         os.fsync(temp)
         temp.close()
         #cf. http://thunk.org/tytso/blog/2009/03/15/dont-fear-the-fsync/
-        os.rename(temp.name, dic_file) 
+        os.rename(temp.name, dic_file)
         try: #backup file
             import time 
             if (not os.path.exists(dic_file+".bak") or
@@ -73,6 +72,26 @@ def save(path_dict, dic_file):
             print("Error while creating backup autojump file. (%s)" %
                     ex, file=stderr)
 
+def open_dic(dic_file, error_recovery=False):
+    """Try hard to open the database file, recovering
+       from backup if needed. """
+    try:
+        aj_file = open(dic_file, 'r')
+        path_dict = {}
+        with aj_file:
+            for l in aj_file.readlines():
+                weight,path = l[:-1].split("\t",1)
+                path_dict[path] = float(weight)
+            return path_dict
+    except (IOError, EOFError):
+        if not error_recovery and os.path.exists(dic_file+".bak"):
+            print('Problem with autojump database,\
+                    trying to recover from backup...', file=stderr)
+            import shutil
+            shutil.copy(dic_file+".bak", dic_file)
+            return open_dic(dic_file, True)
+        else: return {} #if everything fails, return an empty file
+
 def forget(path_dict, dic_file):
     """Gradually forget about directories. Only call
     from the actual jump since it can take time"""
@@ -124,32 +143,12 @@ def find_matches(dirs, patterns, result_list, ignore_case, max_matches):
             only_end=(n == len(patterns)-1)) for n, p in enumerate(patterns)):
             uniqadd(result_list, path)
 
-def open_dic(dic_file, error_recovery=False):
-    """Try hard to open the database file, recovering
-       from backup if needed. """
-    try:
-        aj_file = open(dic_file, 'rb')
-        if version_info[0] > 2:
-            #encoding is only specified for python2.x compatibility
-            path_dict = pickle.load(aj_file, encoding="utf-8")
-        else:
-            path_dict = pickle.load(aj_file)
-        aj_file.close()
-        return path_dict
-    except (IOError, EOFError, pickle.UnpicklingError):
-        if not error_recovery and os.path.exists(dic_file+".bak"):
-            print('Problem with autojump database,\
-                    trying to recover from backup...', file=stderr)
-            import shutil
-            shutil.copy(dic_file+".bak", dic_file)
-            return open_dic(dic_file, True)
-        else: return {} #if everything fails, return an empty file
-
 def get_dic_file():
+    filename = "autojump.txt"
     if CONFIG_DIR == os.path.expanduser("~"):
-        dic_file = CONFIG_DIR+"/.autojump_py"
+        dic_file = CONFIG_DIR+"/." + filename
     else:
-        dic_file = CONFIG_DIR+"/autojump_py"
+        dic_file = CONFIG_DIR+"/" + filename
     return dic_file
 
 def shell_utility():