1 files changed, 275 insertions, 0 deletions
diff --git a/spice_codegen.py b/spice_codegen.py
new file mode 100755
index 0000000..569cccc
--- /dev/null
+++ b/spice_codegen.py
@@ -0,0 +1,275 @@
+#!/usr/bin/env python
+
+import os
+import sys
+from optparse import OptionParser
+import traceback
+from python_modules import spice_parser
+from python_modules import ptypes
+from python_modules import codegen
+from python_modules import demarshal
+from python_modules import marshal
+import six
+
+def write_channel_enums(writer, channel, client, describe):
+    messages = list(filter(lambda m : m.channel == channel, \
+                               channel.client_messages if client else channel.server_messages))
+    if len(messages) == 0:
+        return
+    if client:
+        prefix = [ "MSGC" ]
+    else:
+        prefix = [ "MSG" ]
+    if channel.member_name:
+        prefix.append(channel.member_name.upper())
+    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 describe:
+            writer.writeln("{ %s, \"%s %s\" }," % (enum, "Client" if client else "Server", m.name.upper()))
+        else:
+            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)))
+    writer.end_block(semicolon=True)
+    writer.newline()
+
+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")
+    writer.newline()
+
+    # Define enums
+    for t in ptypes.get_named_types():
+        if isinstance(t, ptypes.EnumBaseType):
+            t.c_define(writer)
+            if describe:
+                t.c_describe(writer)
+
+    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):
+            continue
+        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 */")
+
+parser = OptionParser(usage="usage: %prog [options] <protocol_file> <destination file>")
+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")
+parser.add_option("-m", "--generate-marshallers",
+                  action="store_true", dest="generate_marshallers", default=False,
+                  help="Generate message marshallers")
+parser.add_option("-P", "--private-marshallers",
+                  action="store_true", dest="private_marshallers", default=False,
+                  help="Generate private message marshallers")
+parser.add_option("-M", "--generate-struct-marshaller",
+                  action="append", dest="struct_marshallers",
+                  help="Generate struct marshallers")
+parser.add_option("-a", "--assert-on-error",
+                  action="store_true", dest="assert_on_error", default=False,
+                  help="Assert on error")
+parser.add_option("-H", "--header",
+                  action="store_true", dest="header", default=False,
+                  help="Generate header")
+parser.add_option("-p", "--print-error",
+                  action="store_true", dest="print_error", default=False,
+                  help="Print errors")
+parser.add_option("-s", "--server",
+                  action="store_true", dest="server", default=False,
+                  help="Print errors")
+parser.add_option("-c", "--client",
+                  action="store_true", dest="client", default=False,
+                  help="Print errors")
+parser.add_option("-k", "--keep-identical-file",
+                  action="store_true", dest="keep_identical_file", default=False,
+                  help="Print errors")
+parser.add_option("-i", "--include",
+                  action="append", dest="includes", metavar="FILE",
+                  help="Include FILE in generated code")
+parser.add_option("--prefix", dest="prefix",
+                  help="set public symbol prefix", default="")
+parser.add_option("--ptrsize", dest="ptrsize",
+                  help="set default pointer size", default="4")
+
+(options, args) = parser.parse_args()
+
+if len(args) == 0:
+    parser.error("No protocol file specified")
+
+if len(args) == 1:
+    parser.error("No destination file specified")
+
+ptypes.default_pointer_size = int(options.ptrsize)
+
+proto_file = args[0]
+dest_file = args[1]
+proto = spice_parser.parse(proto_file)
+
+if proto == None:
+    exit(1)
+
+codegen.set_prefix(proto.name)
+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
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  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.write(license)
+writer.header.writeln("/* this is a file autogenerated by spice_codegen.py */")
+writer.header.write(license)
+if not options.header and not options.generate_enums:
+    writer.writeln("#ifdef HAVE_CONFIG_H")
+    writer.writeln("#include <config.h>")
+    writer.writeln("#endif")
+
+if options.assert_on_error:
+    writer.set_option("assert_on_error")
+
+if options.print_error:
+    writer.set_option("print_error")
+
+if options.includes:
+    for i in options.includes:
+        writer.header.writeln('#include <%s>' % i)
+        writer.writeln('#include <%s>' % i)
+
+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:
+        print >> sys.stderr, "Must specify client and/or server"
+        sys.exit(1)
+    demarshal.write_includes(writer)
+
+    if options.server:
+        demarshal.write_protocol_parser(writer, proto, False)
+    if options.client:
+        demarshal.write_protocol_parser(writer, proto, True)
+
+if options.generate_marshallers or (options.struct_marshallers and len(options.struct_marshallers) > 0):
+    marshal.write_includes(writer)
+
+if options.generate_marshallers:
+    if not options.server and not options.client:
+        print >> sys.stderr, "Must specify client and/or server"
+        sys.exit(1)
+    if options.server:
+        marshal.write_protocol_marshaller(writer, proto, False, options.private_marshallers)
+    if options.client:
+        marshal.write_protocol_marshaller(writer, proto, True, options.private_marshallers)
+
+if options.struct_marshallers:
+    for structname in options.struct_marshallers:
+        t = ptypes.lookup_type(structname)
+        marshal.write_marshal_ptr_function(writer, t, False)
+
+if options.generate_marshallers or (options.struct_marshallers and len(options.struct_marshallers) > 0):
+    marshal.write_trailer(writer)
+
+if options.header:
+    content = writer.header.getvalue()
+else:
+    content = writer.getvalue()
+if options.keep_identical_file:
+    try:
+        f = open(dest_file, 'rb')
+        old_content = f.read()
+        f.close()
+
+        if content == old_content:
+            six.print_("No changes to %s" % dest_file)
+            sys.exit(0)
+
+    except IOError:
+        pass
+
+f = open(dest_file, 'wb')
+if six.PY3:
+    f.write(bytes(content, 'UTF-8'))
+else:
+    f.write(content)
+f.close()
+
+six.print_("Wrote %s" % dest_file)
+sys.exit(0)