[PATCH for-next v2 v2 2/5] libxl: make python scripts work with python 2.6 and up

[Wei Liu <wei.liu2@citrix.com>]

Go through the transformations suggested by 2to3 and pick the
necessary ones.

Use sys.stderr.write to avoid importing from __future__.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
---
 tools/libxl/gentest.py  |  2 +-
 tools/libxl/gentypes.py | 10 +++++-----
 tools/libxl/idl.py      | 13 ++++++-------
 3 files changed, 12 insertions(+), 13 deletions(-)

diff --git a/tools/libxl/gentest.py b/tools/libxl/gentest.py
index 989959fc68..81e13b437c 100644
--- a/tools/libxl/gentest.py
+++ b/tools/libxl/gentest.py
@@ -86,7 +86,7 @@ def gen_rand_init(ty, v, indent = "    ", parent = None):
 
 if __name__ == '__main__':
     if len(sys.argv) < 3:
-        print >>sys.stderr, "Usage: gentest.py <idl> <implementation>"
+        sys.stderr.write("Usage: gentest.py <idl> <implementation>\n")
         sys.exit(1)
 
     random.seed(os.getenv('LIBXL_TESTIDL_SEED'))
diff --git a/tools/libxl/gentypes.py b/tools/libxl/gentypes.py
index 88e5c5f30e..656c157c01 100644
--- a/tools/libxl/gentypes.py
+++ b/tools/libxl/gentypes.py
@@ -576,14 +576,14 @@ def libxl_C_enum_from_string(ty, str, e, indent = "    "):
 
 if __name__ == '__main__':
     if len(sys.argv) != 6:
-        print >>sys.stderr, "Usage: gentypes.py <idl> <header> <header-private> <header-json> <implementation>"
+        sys.stderr.write("Usage: gentypes.py <idl> <header> <header-private> <header-json> <implementation>\n")
         sys.exit(1)
 
     (_, idlname, header, header_private, header_json, impl) = sys.argv
 
     (builtins,types) = idl.parse(idlname)
 
-    print "outputting libxl type definitions to %s" % header
+    print("outputting libxl type definitions to %s" % header)
 
     f = open(header, "w")
 
@@ -633,7 +633,7 @@ if __name__ == '__main__':
     f.write("""#endif /* %s */\n""" % (header_define))
     f.close()
 
-    print "outputting libxl JSON definitions to %s" % header_json
+    print("outputting libxl JSON definitions to %s" % header_json)
 
     f = open(header_json, "w")
 
@@ -657,7 +657,7 @@ if __name__ == '__main__':
     f.write("""#endif /* %s */\n""" % header_json_define)
     f.close()
 
-    print "outputting libxl type internal definitions to %s" % header_private
+    print("outputting libxl type internal definitions to %s" % header_private)
 
     f = open(header_private, "w")
 
@@ -683,7 +683,7 @@ if __name__ == '__main__':
     f.write("""#endif /* %s */\n""" % header_json_define)
     f.close()
 
-    print "outputting libxl type implementations to %s" % impl
+    print("outputting libxl type implementations to %s" % impl)
 
     f = open(impl, "w")
     f.write("""
diff --git a/tools/libxl/idl.py b/tools/libxl/idl.py
index 2a7f3c44fe..b5bfc66b50 100644
--- a/tools/libxl/idl.py
+++ b/tools/libxl/idl.py
@@ -11,7 +11,7 @@ DIR_BOTH = 3
 _default_namespace = ""
 def namespace(s):
     if type(s) != str:
-        raise TypeError, "Require a string for the default namespace."
+        raise TypeError("Require a string for the default namespace.")
     global _default_namespace
     _default_namespace = s
 
@@ -346,7 +346,7 @@ class OrderedDict(dict):
         return [(x,self[x]) for x in self.__ordered]
 
 def parse(f):
-    print >>sys.stderr, "Parsing %s" % f
+    sys.stderr.write("Parsing %s\n" % f)
 
     globs = {}
     locs = OrderedDict()
@@ -362,11 +362,10 @@ def parse(f):
             globs[n] = t
 
     try:
-        execfile(f, globs, locs)
-    except SyntaxError,e:
-        raise SyntaxError, \
-              "Errors were found at line %d while processing %s:\n\t%s"\
-              %(e.lineno,f,e.text)
+        exec(compile(open(f).read(), f, 'exec'), globs, locs)
+    except SyntaxError as e:
+        raise SyntaxError("Errors were found at line %d while processing %s:\n\t%s"\
+              %(e.lineno,f,e.text))
 
     types = [t for t in locs.ordered_values() if isinstance(t,Type)]
 
-- 
2.11.0


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