mdwsetup.py: Fixes for Python 3 compatibility.

  * Write parentheses around `print' operands.

  * Set `universal_newlines' on in `Popen' to force handling in text
    mode.

  * Use an unpleasant hack to inject the `CommandClass' metaclass,
    because the official syntax is so different between the two
    versions.

diff --git a/mdwsetup.py b/mdwsetup.py
index 0210714..385634d 100644 (file)
--- a/mdwsetup.py
+++ b/mdwsetup.py
@@ -34,6 +34,13 @@ import distutils.core as DC
 import distutils.log as DL
 
 ###--------------------------------------------------------------------------
 import distutils.log as DL
 
 ###--------------------------------------------------------------------------

+### Compatibility hacks.
+
+def with_metaclass(meta, *supers):
+  return meta("#<anonymous base %s>" % meta.__name__,
+              supers or (object,), dict())
+
+###--------------------------------------------------------------------------

 ### Random utilities.
 
 def uniquify(seq):
 ### Random utilities.
 
 def uniquify(seq):


@@ -73,7 +80,7 @@ def progoutput(command):
   The COMMAND must produce exactly one line of output, and must exit with
   status zero.
   """
   The COMMAND must produce exactly one line of output, and must exit with
   status zero.
   """

-  kid = SUB.Popen(command, stdout = SUB.PIPE)
+  kid = SUB.Popen(command, stdout = SUB.PIPE, universal_newlines = True)

   try:
     out = kid.stdout.readline()
     junk = kid.stdout.read(1)
   try:
     out = kid.stdout.readline()
     junk = kid.stdout.read(1)


@@ -227,7 +234,7 @@ class CommandClass (type):
     else: CMDS[name] = c
     return c
 
     else: CMDS[name] = c
     return c
 

-class Command (DC.Command, object):
+class Command (with_metaclass(CommandClass, DC.Command, object)):

   """
   Base class for `mdwsetup' command classes.
 
   """
   Base class for `mdwsetup' command classes.
 


@@ -250,7 +257,7 @@ class distdir (Command):
   description = "print the distribution directory name to stdout"
   def run(me):
     d = me.distribution
   description = "print the distribution directory name to stdout"
   def run(me):
     d = me.distribution

-    print '%s-%s' % (d.get_name(), d.get_version())
+    print('%s-%s' % (d.get_name(), d.get_version()))

 
 class build_gen(Command):
   """
 
 class build_gen(Command):
   """