mdwsetup.py: Fixes for Python 3 compatibility.

[mLib] / mdwsetup.py

diff --git a/mdwsetup.py b/mdwsetup.py
index 06990a8cc1eaefdcad9a27effa27e8ca4941da41..385634d19334c4ee953f7cfd8ee4edb53c8038aa 100644 (file)
--- a/mdwsetup.py
+++ b/mdwsetup.py
@@ -33,6 +33,13 @@ import subprocess as SUB
 import distutils.core as DC
 import distutils.log as DL
 
 import distutils.core as DC
 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.
 
 ###--------------------------------------------------------------------------
 ### Random utilities.
 


@@ -73,9 +80,12 @@ 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)
-  out = kid.stdout.readline()
-  junk = kid.stdout.read()
+  kid = SUB.Popen(command, stdout = SUB.PIPE, universal_newlines = True)
+  try:
+    out = kid.stdout.readline()
+    junk = kid.stdout.read(1)
+  finally:
+    kid.stdout.close()

   if junk != '': raise ValueError \
     ("Child process `%s' produced unspected output %r" % (command, junk))
   rc = kid.wait()
   if junk != '': raise ValueError \
     ("Child process `%s' produced unspected output %r" % (command, junk))
   rc = kid.wait()


@@ -224,7 +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.
 


@@ -247,7 +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):
   """