[Spice-commits] 2 commits - COPYING python_modules/ptypes.py spice_codegen.py

Jonathon Jongsma jjongsma at kemper.freedesktop.org
Wed Oct 23 21:16:18 CEST 2013

 COPYING                  |  502 +++++++++++++++++++++++++++++++++++++++++++++++
 python_modules/ptypes.py |   17 +
 spice_codegen.py         |  120 ++++++++---
 3 files changed, 605 insertions(+), 34 deletions(-)

New commits:
commit 1450bb4ddbd8ceab9192e4f84606aa5ae54c5ea6
Author: Jonathon Jongsma <jjongsma at redhat.com>
Date:   Tue Oct 22 10:38:48 2013 -0500

    Be explicit about spice-common license
    Use same license as spice-gtk and spice modules (LGPL 2.1) since those licenses
    applied to the spice-common submodule in the past.  This makes it more clear
    that if you use spice-common separately, the license is still LGPL.  Also
    mention license and copyright in generated files.

diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..4362b49
--- /dev/null
@@ -0,0 +1,502 @@
+                       Version 2.1, February 1999
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+ 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
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diff --git a/spice_codegen.py b/spice_codegen.py
index 1cf1697..d35d949 100755
--- a/spice_codegen.py
+++ b/spice_codegen.py
@@ -80,8 +80,6 @@ def write_enums(writer, describe=False):
     writer.writeln("#ifndef _H_SPICE_ENUMS")
     writer.writeln("#define _H_SPICE_ENUMS")
-    writer.comment("Generated from %s, don't edit" % writer.options["source"]).newline()
-    writer.newline()
     # Define enums
     for t in ptypes.get_named_types():
@@ -173,10 +171,31 @@ writer = codegen.CodeWriter()
 writer.header = codegen.CodeWriter()
 writer.set_option("source", os.path.basename(proto_file))
+license = """/*
+  Copyright (C) 2013 Red Hat, Inc.
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  Lesser General Public License for more details.
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, see <http://www.gnu.org/licenses/>.
 writer.public_prefix = options.prefix
 writer.writeln("/* this is a file autogenerated by spice_codegen.py */")
 writer.header.writeln("/* this is a file autogenerated by spice_codegen.py */")
 if not options.header and not options.generate_enums:
     writer.writeln("#ifdef HAVE_CONFIG_H")
     writer.writeln("#include <config.h>")
commit 31ef0c626d75a6af416c32551b8b3a7bb34eac7b
Author: Jonathon Jongsma <jjongsma at redhat.com>
Date:   Thu Sep 12 12:11:02 2013 -0500

    codegen: Add a --generate-wireshark-dissector option
    The wireshark protocol dissector is a bit out-of-date. Several new channel types
    and enums have been added.  It would be nice if these values (and the
    translation between the value and the name) could be automatically generated so
    that updating the dissector was a slightly less manual process.  This patch adds
    a commandline switch which generates both the enums and value-name lists in the
    format that wireshark expects.

diff --git a/python_modules/ptypes.py b/python_modules/ptypes.py
index d9fbfe2..2bfbf0d 100644
--- a/python_modules/ptypes.py
+++ b/python_modules/ptypes.py
@@ -247,6 +247,23 @@ class EnumBaseType(Type):
     def get_fixed_nw_size(self):
         return self.bits / 8
+    # generates a value-name table suitable for use with the wireshark protocol
+    # dissector
+    def c_describe(self, writer):
+        writer.write("static const value_string %s_vs[] = " % codegen.prefix_underscore_lower(self.name))
+        writer.begin_block()
+        values = self.names.keys()
+        values.sort()
+        for i in values:
+            writer.write("{ ")
+            writer.write(self.c_enumname(i))
+            writer.write(", \"%s\" }," % self.names[i])
+            writer.newline()
+        writer.write("{ 0, NULL }")
+        writer.end_block(semicolon=True)
+        writer.newline()
 class EnumType(EnumBaseType):
     def __init__(self, bits, name, enums, attribute_list):
diff --git a/spice_codegen.py b/spice_codegen.py
index e9e64c0..1cf1697 100755
--- a/spice_codegen.py
+++ b/spice_codegen.py
@@ -10,38 +10,73 @@ from python_modules import codegen
 from python_modules import demarshal
 from python_modules import marshal
-def write_channel_enums(writer, channel, client):
+def write_channel_enums(writer, channel, client, describe):
     messages = filter(lambda m : m.channel == channel, \
                           channel.client_messages if client else channel.server_messages)
     if len(messages) == 0:
-    writer.begin_block("enum")
-    i = 0
     if client:
         prefix = [ "MSGC" ]
         prefix = [ "MSG" ]
     if channel.member_name:
+    if not describe:
+        writer.begin_block("enum")
+    else:
+        writer.begin_block("static const value_string %s_vs[] = " % (codegen.prefix_underscore_lower(*[x.lower() for x in prefix])))
+    i = 0
     prefix.append(None) # To be replaced with name
     for m in messages:
         prefix[-1] = m.name.upper()
         enum = codegen.prefix_underscore_upper(*prefix)
-        if m.value == i:
-            writer.writeln("%s," % enum)
-            i = i + 1
+        if describe:
+            writer.writeln("{ %s, \"%s %s\" }," % (enum, "Client" if client else "Server", m.name.upper()))
-            writer.writeln("%s = %s," % (enum, m.value))
-            i = m.value + 1
-    if channel.member_name:
-        prefix[-1] = prefix[-2]
-        prefix[-2] = "END"
-        writer.newline()
-        writer.writeln("%s" % (codegen.prefix_underscore_upper(*prefix)))
+            if m.value == i:
+                writer.writeln("%s," % enum)
+                i = i + 1
+            else:
+                writer.writeln("%s = %s," % (enum, m.value))
+                i = m.value + 1
+    if describe:
+        writer.writeln("{ 0, NULL }");
+    else:
+        if channel.member_name:
+            prefix[-1] = prefix[-2]
+            prefix[-2] = "END"
+            writer.newline()
+            writer.writeln("%s" % (codegen.prefix_underscore_upper(*prefix)))
-def write_enums(writer):
+def write_channel_type_enum(writer, describe=False):
+    i = 0
+    if describe:
+        writer.begin_block("static const value_string channel_types_vs[] =")
+    else:
+        writer.begin_block("enum")
+    for c in proto.channels:
+        enum = codegen.prefix_underscore_upper("CHANNEL", c.name.upper())
+        if describe:
+            writer.writeln("{ %s, \"%s\" }," % (enum, c.name.upper()))
+        else:
+            if c.value == i:
+                writer.writeln("%s," % enum)
+                i = i + 1
+            else:
+                writer.writeln("%s = %s," % (enum, c.value))
+                i = c.value + 1
+    writer.newline()
+    if describe:
+        writer.writeln("{ 0, NULL }")
+    else:
+        writer.writeln("SPICE_END_CHANNEL")
+    writer.end_block(semicolon=True)
+    writer.newline()
+def write_enums(writer, describe=False):
     writer.writeln("#ifndef _H_SPICE_ENUMS")
     writer.writeln("#define _H_SPICE_ENUMS")
@@ -52,27 +87,22 @@ def write_enums(writer):
     for t in ptypes.get_named_types():
         if isinstance(t, ptypes.EnumBaseType):
+            if describe:
+                t.c_describe(writer)
-    i = 0
-    writer.begin_block("enum")
-    for c in proto.channels:
-        enum = codegen.prefix_underscore_upper("CHANNEL", c.name.upper())
-        if c.value == i:
-            writer.writeln("%s," % enum)
-            i = i + 1
-        else:
-            writer.writeln("%s = %s," % (enum, c.value))
-            i = c.value + 1
-    writer.newline()
-    writer.writeln("SPICE_END_CHANNEL")
-    writer.end_block(semicolon=True)
-    writer.newline()
+    write_channel_type_enum(writer)
+    if (describe):
+        write_channel_type_enum(writer, True)
     for c in ptypes.get_named_types():
         if not isinstance(c, ptypes.ChannelType):
-        write_channel_enums(writer, c, False)
-        write_channel_enums(writer, c, True)
+        write_channel_enums(writer, c, False, False)
+        if describe:
+            write_channel_enums(writer, c, False, describe)
+        write_channel_enums(writer, c, True, False)
+        if describe:
+            write_channel_enums(writer, c, True, describe)
     writer.writeln("#endif /* _H_SPICE_ENUMS */")
@@ -80,6 +110,9 @@ parser = OptionParser(usage="usage: %prog [options] <protocol_file> <destination
 parser.add_option("-e", "--generate-enums",
                   action="store_true", dest="generate_enums", default=False,
                   help="Generate enums")
+parser.add_option("-w", "--generate-wireshark-dissector",
+                  action="store_true", dest="generate_dissector", default=False,
+                  help="Generate Wireshark dissector definitions")
 parser.add_option("-d", "--generate-demarshallers",
                   action="store_true", dest="generate_demarshallers", default=False,
                   help="Generate demarshallers")
@@ -160,8 +193,8 @@ if options.includes:
         writer.header.writeln('#include "%s"' % i)
         writer.writeln('#include "%s"' % i)
-if options.generate_enums:
-    write_enums(writer)
+if options.generate_enums or options.generate_dissector:
+    write_enums(writer, options.generate_dissector)
 if options.generate_demarshallers:
     if not options.server and not options.client:

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