testsuite: Support for ancient pylint versions

For Python2.4 and Python2.5 we need very old pylint versions (0.21.x). So
we have to work around some bugs:

  - This adds some ugly monkey patching to backport some bugfixes from newer
    pylint versions (that does not support Python2.4 anymore).
  - Another problem is, that pylint-0.24 changed its message IDs. So this
    translates the new IDs into the older ones, so that the old pylint can
    match the disabled messages.
  - The newer version of pylint support more messages and some of the new
    messages have to be disabled. The old pylint versions have to silently
    ignore unknown message ids.
  - The compatible astng version of the old pylint does not support
    register_transformer, so we need to build out own variant by monkey
    patching the ASTNGBuilder.

1 files changed, 10 insertions, 2 deletions

diff --git a/testsuite/ext/ssl_protocols.py b/testsuite/ext/ssl_protocols.py
index 66068d2a9..a56293669 100644
--- a/testsuite/ext/ssl_protocols.py
+++ b/testsuite/ext/ssl_protocols.py
@@ -1,5 +1,5 @@
 try:
-    from logilab.astng import MANAGER, scoped_nodes, node_classes
+    from logilab.astng import MANAGER, builder, scoped_nodes, node_classes
     PYLINT=0
 except ImportError:
     from astroid import MANAGER, scoped_nodes, node_classes
@@ -12,6 +12,14 @@ def ssl_transform(module):
 
 def register(linter):
     if PYLINT == 0:
-        MANAGER.register_transformer(ssl_transform)
+        if hasattr(MANAGER, 'register_transformer'):
+            MANAGER.register_transformer(ssl_transform)
+        else:
+            safe = builder.ASTNGBuilder.string_build
+            def _string_build(self, data, modname='', path=None):
+                if modname == 'ssl':
+                    data += '\n\nPROTOCOL_SSLv23 = 0\nPROTOCOL_TLSv1 = 0'
+                return safe(self, data, modname, path)
+            builder.ASTNGBuilder.string_build = _string_build
     else:
         MANAGER.register_transform(scoped_nodes.Module, ssl_transform)