improved binary file support

--HG--
branch : pmacs2

application.py

@@ -873,8 +873,14 @@ if __name__ == "__main__":
                 i += 1
                 auxname = '%s/%d' % (name, i)
             name = auxname
+
+        try:
             b = f(path, nl, name, opts.binary)
             b.open()
+        except buffer2.BinaryDataException, e:
+            b = f(path, nl, name, True)
+            b.open()
+
         buffers.append(b)
         paths.add(path)
         names.add(name)

buffer2.py

@@ -354,6 +354,9 @@ class ConsoleBuffer(Buffer):
     def readonly(self):
         return True
 
+class BinaryDataException(Exception):
+    pass
+
 class FileBuffer(Buffer):
     btype = 'file'
     def __init__(self, path, nl='\n', name=None):
@@ -417,12 +420,12 @@ class FileBuffer(Buffer):
             self.store_checksum(data)
         else:
             data = ''
-        for i in range(0, min(len(data), 8)):
-            if ord(data[i]) > 127:
-                raise Exception, "editing binary files is not supported"
         data = self.read_filter(data)
-        #FIXME: this is horrible...but maybe not as horrible as using tabs??
         data = data.replace("\t", "    ")
+        for i in range(0, min(len(data), 8)):
+            if data[i] not in string.printable:
+                raise BinaryDataException, "binary files are not supported"
+        #FIXME: this is horrible...but maybe not as horrible as using tabs??
         return data
     def open(self):
         data = self.read()