Mercurial Repositories > eric / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Utilities/compatibility_fixes.py	Mon Mar 25 03:28:43 2013 +0100
@@ -0,0 +1,89 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2013 Tobias Rzepka <tobias.rzepka@gmail.com>
+#
+
+"""
+Module implementing the open behavior of Python3 for use with Eric5.
+The from Eric5 used features are emulated only. The not emulated features
+should throw a NotImplementedError exception.
+"""
+
+from __future__ import unicode_literals    # __IGNORE_WARNING__
+
+import __builtin__
+import codecs
+
+
+def open(file, mode='r', buffering=-1, encoding=None, errors=None, newline=None, closefd=True):
+    return File(file, mode, buffering,  encoding, errors, newline, closefd)
+
+
+class File(file):
+    def __init__(self, filein, mode='r', buffering=-1,  encoding=None, errors=None, newline=None, closefd=True):
+        self.__encoding = encoding
+        self.__newline = newline
+        self.__closefd = closefd
+        if newline is not None:
+            if 'r' in mode:
+                raise NotImplementedError
+            else:
+                mode = mode.replace('t', 'b')
+
+        if closefd == False:
+            raise NotImplementedError
+
+        if errors is None:
+            self.__errors = 'strict'
+        else:
+            self.__errors = errors
+        
+        file.__init__(self, filein,  mode,  buffering)
+
+    def read(self,  n=-1):
+        txt = super(File, self).read(n)
+        if self.__encoding is None:
+            return txt
+        else:
+            return codecs.decode(txt,  self.__encoding)
+    
+    def readline(self,  limit=-1):
+        txt = super(File, self).readline(limit)
+        if self.__encoding is None:
+            return txt
+        else:
+            return codecs.decode(txt,  self.__encoding)
+
+    def readlines(self,  hint=-1):
+        if self.__encoding is None:
+            return super(File, self).readlines(hint)
+        else:
+            return [codecs.decode(txt,  self.__encoding) for txt in super(File, self).readlines(hint)]
+
+    def write(self,  txt):
+        if self.__encoding is not None:
+            txt = codecs.encode(txt, self.__encoding, self.__errors)
+        
+        if self.__newline in ['\r\n', '\r']:
+            txt = txt.replace('\n', self.__newline)
+        
+        super(File, self).write(txt)
+    
+    def next(self):
+        txt = super(File, self).next()
+        if self.__encoding is None:
+            return txt
+        else:
+            return codecs.decode(txt,  self.__encoding)
+
+            
+__builtin__.open = open
+
+if __name__ == '__main__':
+    fp = open('compatibility_fixes.py', encoding='latin1')
+    print(fp.read())
+    fp.close()
+    
+    with open('compatibility_fixes.py', encoding='UTF-8') as fp:
+        rlines = fp.readlines()
+        print(rlines[-1])