Import tools from telepathy-glib 0.7.3 and build a static libemp-extensions.la.

Link that library into libempathy (it's not actually used for anything at this
point).

Extensions currently built: ChannelHandler and StreamEngine.

The namespacing convention used is emp_*, Emp*, EMP_* so it won't be included
in the library ABI.

svn path=/trunk/; revision=663

1 files changed, 711 insertions, 0 deletions

diff --git a/tools/glib-ginterface-gen.py b/tools/glib-ginterface-gen.py
new file mode 100644
index 000000000..0c7c419e6
--- /dev/null
+++ b/tools/glib-ginterface-gen.py
@@ -0,0 +1,711 @@
+#!/usr/bin/python
+
+# glib-ginterface-gen.py: service-side interface generator
+#
+# Generate dbus-glib 0.x service GInterfaces from the Telepathy specification.
+# The master copy of this program is in the telepathy-glib repository -
+# please make any changes there.
+#
+# Copyright (C) 2006, 2007 Collabora Limited
+#
+# 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, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+import sys
+import os.path
+import xml.dom.minidom
+
+from libglibcodegen import Signature, type_to_gtype, cmp_by_name, \
+        camelcase_to_lower, NS_TP, dbus_gutils_wincaps_to_uscore, \
+        signal_to_marshal_name, method_to_glue_marshal_name
+
+
+NS_TP = "http://telepathy.freedesktop.org/wiki/DbusSpec#extensions-v0"
+
+class Generator(object):
+
+    def __init__(self, dom, prefix, basename, signal_marshal_prefix,
+                 headers, end_headers, not_implemented_func,
+                 allow_havoc):
+        self.dom = dom
+        self.__header = []
+        self.__body = []
+
+        assert prefix.endswith('_')
+        assert not signal_marshal_prefix.endswith('_')
+
+        # The main_prefix, sub_prefix thing is to get:
+        # FOO_ -> (FOO_, _)
+        # FOO_SVC_ -> (FOO_, _SVC_)
+        # but
+        # FOO_BAR/ -> (FOO_BAR_, _)
+        # FOO_BAR/SVC_ -> (FOO_BAR_, _SVC_)
+
+        if '/' in prefix:
+            main_prefix, sub_prefix = prefix.upper().split('/', 1)
+            prefix = prefix.replace('/', '_')
+        else:
+            main_prefix, sub_prefix = prefix.upper().split('_', 1)
+
+        self.MAIN_PREFIX_ = main_prefix + '_'
+        self._SUB_PREFIX_ = '_' + sub_prefix
+
+        self.Prefix_ = prefix
+        self.Prefix = prefix.replace('_', '')
+        self.prefix_ = prefix.lower()
+        self.PREFIX_ = prefix.upper()
+
+        self.signal_marshal_prefix = signal_marshal_prefix
+        self.headers = headers
+        self.end_headers = end_headers
+        self.not_implemented_func = not_implemented_func
+        self.allow_havoc = allow_havoc
+
+    def h(self, s):
+        self.__header.append(s)
+
+    def b(self, s):
+        self.__body.append(s)
+
+    def do_node(self, node):
+        node_name = node.getAttribute('name').replace('/', '')
+        node_name_mixed = self.node_name_mixed = node_name.replace('_', '')
+        node_name_lc = self.node_name_lc = node_name.lower()
+        node_name_uc = self.node_name_uc = node_name.upper()
+
+        interfaces = node.getElementsByTagName('interface')
+        assert len(interfaces) == 1, interfaces
+        interface = interfaces[0]
+        self.iface_name = interface.getAttribute('name')
+
+        tmp = interface.getAttribute('tp:implement-service')
+        if tmp == "no":
+            return
+
+        tmp = interface.getAttribute('tp:causes-havoc')
+        if tmp and not self.allow_havoc:
+            raise AssertionError('%s is %s' % (self.iface_name, tmp))
+
+        self.b('static const DBusGObjectInfo _%s%s_object_info;'
+               % (self.prefix_, node_name_lc))
+        self.b('')
+
+        methods = interface.getElementsByTagName('method')
+        signals = interface.getElementsByTagName('signal')
+        properties = interface.getElementsByTagName('property')
+        # Don't put properties in dbus-glib glue
+        glue_properties = []
+
+        self.b('struct _%s%sClass {' % (self.Prefix, node_name_mixed))
+        self.b('    GTypeInterface parent_class;')
+        for method in methods:
+            self.b('    %s %s;' % self.get_method_impl_names(method))
+        self.b('};')
+        self.b('')
+
+        if signals:
+            self.b('enum {')
+            for signal in signals:
+                self.b('    %s,' % self.get_signal_const_entry(signal))
+            self.b('    N_%s_SIGNALS' % node_name_uc)
+            self.b('};')
+            self.b('static guint %s_signals[N_%s_SIGNALS] = {0};'
+                   % (node_name_lc, node_name_uc))
+            self.b('')
+
+        self.b('static void %s%s_base_init (gpointer klass);'
+               % (self.prefix_, node_name_lc))
+        self.b('')
+
+        self.b('GType')
+        self.b('%s%s_get_type (void)'
+               % (self.prefix_, node_name_lc))
+        self.b('{')
+        self.b('  static GType type = 0;')
+        self.b('')
+        self.b('  if (G_UNLIKELY (type == 0))')
+        self.b('    {')
+        self.b('      static const GTypeInfo info = {')
+        self.b('        sizeof (%s%sClass),' % (self.Prefix, node_name_mixed))
+        self.b('        %s%s_base_init, /* base_init */'
+               % (self.prefix_, node_name_lc))
+        self.b('        NULL, /* base_finalize */')
+        self.b('        NULL, /* class_init */')
+        self.b('        NULL, /* class_finalize */')
+        self.b('        NULL, /* class_data */')
+        self.b('        0,')
+        self.b('        0, /* n_preallocs */')
+        self.b('        NULL /* instance_init */')
+        self.b('      };')
+        self.b('')
+        self.b('      type = g_type_register_static (G_TYPE_INTERFACE,')
+        self.b('          "%s%s", &info, 0);' % (self.Prefix, node_name_mixed))
+        self.b('    }')
+        self.b('')
+        self.b('  return type;')
+        self.b('}')
+        self.b('')
+
+        self.h('/**')
+        self.h(' * %s%s:' % (self.Prefix, node_name_mixed))
+        self.h(' *')
+        self.h(' * Dummy typedef representing any implementation of this '
+               'interface.')
+        self.h(' */')
+        self.h('typedef struct _%s%s %s%s;'
+               % (self.Prefix, node_name_mixed, self.Prefix, node_name_mixed))
+        self.h('')
+        self.h('/**')
+        self.h(' * %s%sClass:' % (self.Prefix, node_name_mixed))
+        self.h(' *')
+        self.h(' * The class of %s%s.' % (self.Prefix, node_name_mixed))
+        self.h(' */')
+        self.h('typedef struct _%s%sClass %s%sClass;'
+               % (self.Prefix, node_name_mixed, self.Prefix, node_name_mixed))
+        self.h('')
+        self.h('GType %s%s_get_type (void);'
+               % (self.prefix_, node_name_lc))
+
+        gtype = self.current_gtype = \
+                self.MAIN_PREFIX_ + 'TYPE' + self._SUB_PREFIX_ + node_name_uc
+        classname = self.Prefix + node_name_mixed
+
+        self.h('#define %s \\\n  (%s%s_get_type ())'
+               % (gtype, self.prefix_, node_name_lc))
+        self.h('#define %s%s(obj) \\\n'
+               '  (G_TYPE_CHECK_INSTANCE_CAST((obj), %s, %s))'
+               % (self.PREFIX_, node_name_uc, gtype, classname))
+        self.h('#define %sIS%s%s(obj) \\\n'
+               '  (G_TYPE_CHECK_INSTANCE_TYPE((obj), %s))'
+               % (self.MAIN_PREFIX_, self._SUB_PREFIX_, node_name_uc, gtype))
+        self.h('#define %s%s_GET_CLASS(obj) \\\n'
+               '  (G_TYPE_INSTANCE_GET_INTERFACE((obj), %s, %sClass))'
+               % (self.PREFIX_, node_name_uc, gtype, classname))
+        self.h('')
+        self.h('')
+
+        base_init_code = []
+
+        for method in methods:
+            self.do_method(method)
+
+        for signal in signals:
+            base_init_code.extend(self.do_signal(signal))
+
+        self.b('static inline void')
+        self.b('%s%s_base_init_once (gpointer klass)'
+               % (self.prefix_, node_name_lc))
+        self.b('{')
+        self.b('  static TpDBusPropertiesMixinPropInfo properties[%d] = {'
+               % (len(properties) + 1))
+
+        for m in properties:
+            access = m.getAttribute('access')
+            assert access in ('read', 'write', 'readwrite')
+
+            if access == 'read':
+                flags = 'TP_DBUS_PROPERTIES_MIXIN_FLAG_READ'
+            elif access == 'write':
+                flags = 'TP_DBUS_PROPERTIES_MIXIN_FLAG_WRITE'
+            else:
+                flags = ('TP_DBUS_PROPERTIES_MIXIN_FLAG_READ | '
+                         'TP_DBUS_PROPERTIES_MIXIN_FLAG_WRITE')
+
+            self.b('      { 0, %s, "%s", 0, NULL, NULL }, /* %s */'
+                   % (flags, m.getAttribute('type'), m.getAttribute('name')))
+
+        self.b('      { 0, 0, NULL, 0, NULL, NULL }')
+        self.b('  };')
+        self.b('  static TpDBusPropertiesMixinIfaceInfo interface =')
+        self.b('      { 0, properties, NULL, NULL };')
+        self.b('')
+        self.b('  interface.dbus_interface = g_quark_from_static_string '
+               '("%s");' % self.iface_name)
+
+        for i, m in enumerate(properties):
+            self.b('  properties[%d].name = g_quark_from_static_string ("%s");'
+                   % (i, m.getAttribute('name')))
+            self.b('  properties[%d].type = %s;'
+                   % (i, type_to_gtype(m.getAttribute('type'))[1]))
+
+        self.b('  tp_svc_interface_set_dbus_properties_info (%s, &interface);'
+               % self.current_gtype)
+
+        self.b('')
+        for s in base_init_code:
+            self.b(s)
+        self.b('  dbus_g_object_type_install_info (%s%s_get_type (),'
+               % (self.prefix_, node_name_lc))
+        self.b('      &_%s%s_object_info);'
+               % (self.prefix_, node_name_lc))
+        self.b('}')
+
+        self.b('static void')
+        self.b('%s%s_base_init (gpointer klass)'
+               % (self.prefix_, node_name_lc))
+        self.b('{')
+        self.b('  static gboolean initialized = FALSE;')
+        self.b('')
+        self.b('  if (!initialized)')
+        self.b('    {')
+        self.b('      initialized = TRUE;')
+        self.b('      %s%s_base_init_once (klass);'
+               % (self.prefix_, node_name_lc))
+        self.b('    }')
+        # insert anything we need to do per implementation here
+        self.b('}')
+
+        self.h('')
+
+        self.b('static const DBusGMethodInfo _%s%s_methods[] = {'
+               % (self.prefix_, node_name_lc))
+
+        method_blob, offsets = self.get_method_glue(methods)
+
+        for method, offset in zip(methods, offsets):
+            self.do_method_glue(method, offset)
+
+        self.b('};')
+        self.b('')
+
+        self.b('static const DBusGObjectInfo _%s%s_object_info = {'
+               % (self.prefix_, node_name_lc))
+        self.b('  0,')  # version
+        self.b('  _%s%s_methods,' % (self.prefix_, node_name_lc))
+        self.b('  %d,' % len(methods))
+        self.b('"' + method_blob.replace('\0', '\\0') + '",')
+        self.b('"' + self.get_signal_glue(signals).replace('\0', '\\0') + '",')
+        self.b('"' +
+               self.get_property_glue(glue_properties).replace('\0', '\\0') +
+               '",')
+        self.b('};')
+        self.b('')
+
+        self.node_name_mixed = None
+        self.node_name_lc = None
+        self.node_name_uc = None
+
+    def get_method_glue(self, methods):
+        info = []
+        offsets = []
+
+        for method in methods:
+            offsets.append(len(''.join(info)))
+
+            info.append(self.iface_name + '\0')
+            info.append(method.getAttribute('name') + '\0')
+
+            info.append('A\0')    # async
+
+            counter = 0
+            for arg in method.getElementsByTagName('arg'):
+                out = arg.getAttribute('direction') == 'out'
+
+                name = arg.getAttribute('name')
+                if not name:
+                    assert out
+                    name = 'arg%u' % counter
+                counter += 1
+
+                info.append(name + '\0')
+
+                if out:
+                    info.append('O\0')
+                else:
+                    info.append('I\0')
+
+                if out:
+                    info.append('F\0')    # not const
+                    info.append('N\0')    # not error or return
+                info.append(arg.getAttribute('type') + '\0')
+
+            info.append('\0')
+
+        return ''.join(info) + '\0', offsets
+
+    def do_method_glue(self, method, offset):
+        lc_name = camelcase_to_lower(method.getAttribute('name'))
+
+        marshaller = method_to_glue_marshal_name(method,
+                self.signal_marshal_prefix)
+        wrapper = self.prefix_ + self.node_name_lc + '_' + lc_name
+
+        self.b("  { (GCallback) %s, %s, %d }," % (wrapper, marshaller, offset))
+
+    def get_signal_glue(self, signals):
+        info = []
+
+        for signal in signals:
+            info.append(self.iface_name)
+            info.append(signal.getAttribute('name'))
+
+        return '\0'.join(info) + '\0\0'
+
+    # the implementation can be the same
+    get_property_glue = get_signal_glue
+
+    def get_method_impl_names(self, method):
+        dbus_method_name = method.getAttribute('name')
+        class_member_name = camelcase_to_lower(dbus_method_name)
+        stub_name = (self.prefix_ + self.node_name_lc + '_' +
+                     class_member_name)
+        return (stub_name + '_impl', class_member_name)
+
+    def do_method(self, method):
+        assert self.node_name_mixed is not None
+
+        in_class = []
+
+        # Examples refer to Thing.DoStuff (su) -> ii
+
+        # DoStuff
+        dbus_method_name = method.getAttribute('name')
+        # do_stuff
+        class_member_name = camelcase_to_lower(dbus_method_name)
+        # void tp_svc_thing_do_stuff (TpSvcThing *, const char *, guint,
+        #   DBusGMethodInvocation *);
+        stub_name = (self.prefix_ + self.node_name_lc + '_' +
+                     class_member_name)
+        # typedef void (*tp_svc_thing_do_stuff_impl) (TpSvcThing *,
+        #   const char *, guint, DBusGMethodInvocation);
+        impl_name = stub_name + '_impl'
+        # void tp_svc_thing_return_from_do_stuff (DBusGMethodInvocation *,
+        #   gint, gint);
+        ret_name = (self.prefix_ + self.node_name_lc + '_return_from_' +
+                    class_member_name)
+
+        # Gather arguments
+        in_args = []
+        out_args = []
+        for i in method.getElementsByTagName('arg'):
+            name = i.getAttribute('name')
+            direction = i.getAttribute('direction') or 'in'
+            dtype = i.getAttribute('type')
+
+            assert direction in ('in', 'out')
+
+            if name:
+                name = direction + '_' + name
+            elif direction == 'in':
+                name = direction + str(len(in_args))
+            else:
+                name = direction + str(len(out_args))
+
+            ctype, gtype, marshaller, pointer = type_to_gtype(dtype)
+
+            if pointer:
+                ctype = 'const ' + ctype
+
+            struct = (ctype, name)
+
+            if direction == 'in':
+                in_args.append(struct)
+            else:
+                out_args.append(struct)
+
+        # Implementation type declaration (in header, docs in body)
+        self.b('/**')
+        self.b(' * %s:' % impl_name)
+        self.b(' * @self: The object implementing this interface')
+        for (ctype, name) in in_args:
+            self.b(' * @%s: %s (FIXME, generate documentation)'
+                   % (name, ctype))
+        self.b(' * @context: Used to return values or throw an error')
+        self.b(' *')
+        self.b(' * The signature of an implementation of the D-Bus method')
+        self.b(' * %s on interface %s.' % (dbus_method_name, self.iface_name))
+        self.b(' */')
+        self.h('typedef void (*%s) (%s%s *self,'
+          % (impl_name, self.Prefix, self.node_name_mixed))
+        for (ctype, name) in in_args:
+            self.h('    %s%s,' % (ctype, name))
+        self.h('    DBusGMethodInvocation *context);')
+
+        # Class member (in class definition)
+        in_class.append('    %s %s;' % (impl_name, class_member_name))
+
+        # Stub definition (in body only - it's static)
+        self.b('static void')
+        self.b('%s (%s%s *self,'
+           % (stub_name, self.Prefix, self.node_name_mixed))
+        for (ctype, name) in in_args:
+            self.b('    %s%s,' % (ctype, name))
+        self.b('    DBusGMethodInvocation *context)')
+        self.b('{')
+        self.b('  %s impl = (%s%s_GET_CLASS (self)->%s);'
+          % (impl_name, self.PREFIX_, self.node_name_uc, class_member_name))
+        self.b('')
+        self.b('  if (impl != NULL)')
+        tmp = ['self'] + [name for (ctype, name) in in_args] + ['context']
+        self.b('    {')
+        self.b('      (impl) (%s);' % ',\n        '.join(tmp))
+        self.b('    }')
+        self.b('  else')
+        self.b('    {')
+        if self.not_implemented_func:
+            self.b('      %s (context);' % self.not_implemented_func)
+        else:
+            self.b('      GError e = { DBUS_GERROR, ')
+            self.b('           DBUS_GERROR_UNKNOWN_METHOD,')
+            self.b('           "Method not implemented" };')
+            self.b('')
+            self.b('      dbus_g_method_return_error (context, &e);')
+        self.b('    }')
+        self.b('}')
+        self.b('')
+
+        # Implementation registration (in both header and body)
+        self.h('void %s%s_implement_%s (%s%sClass *klass, %s impl);'
+               % (self.prefix_, self.node_name_lc, class_member_name,
+                  self.Prefix, self.node_name_mixed, impl_name))
+
+        self.b('/**')
+        self.b(' * %s%s_implement_%s:'
+               % (self.prefix_, self.node_name_lc, class_member_name))
+        self.b(' * @klass: A class whose instances implement this interface')
+        self.b(' * @impl: A callback used to implement the %s D-Bus method'
+               % dbus_method_name)
+        self.b(' *')
+        self.b(' * Register an implementation for the %s method in the vtable'
+               % dbus_method_name)
+        self.b(' * of an implementation of this interface. To be called from')
+        self.b(' * the interface init function.')
+        self.b(' */')
+        self.b('void')
+        self.b('%s%s_implement_%s (%s%sClass *klass, %s impl)'
+               % (self.prefix_, self.node_name_lc, class_member_name,
+                  self.Prefix, self.node_name_mixed, impl_name))
+        self.b('{')
+        self.b('  klass->%s = impl;' % class_member_name)
+        self.b('}')
+        self.b('')
+
+        # Return convenience function (static inline, in header)
+        self.h('/**')
+        self.h(' * %s:' % ret_name)
+        self.h(' * @context: The D-Bus method invocation context')
+        for (ctype, name) in out_args:
+            self.h(' * @%s: %s (FIXME, generate documentation)'
+                   % (name, ctype))
+        self.h(' *')
+        self.h(' * Return successfully by calling dbus_g_method_return().')
+        self.h(' * This inline function exists only to provide type-safety.')
+        self.h(' */')
+        tmp = (['DBusGMethodInvocation *context'] +
+               [ctype + name for (ctype, name) in out_args])
+        self.h('static inline')
+        self.h('/* this comment is to stop gtkdoc realising this is static */')
+        self.h(('void %s (' % ret_name) + (',\n    '.join(tmp)) + ');')
+        self.h('static inline void')
+        self.h(('%s (' % ret_name) + (',\n    '.join(tmp)) + ')')
+        self.h('{')
+        tmp = ['context'] + [name for (ctype, name) in out_args]
+        self.h('  dbus_g_method_return (' + ',\n      '.join(tmp) + ');')
+        self.h('}')
+        self.h('')
+
+        return in_class
+
+    def get_signal_const_entry(self, signal):
+        assert self.node_name_uc is not None
+        return ('SIGNAL_%s_%s'
+                % (self.node_name_uc, signal.getAttribute('name')))
+
+    def do_signal(self, signal):
+        assert self.node_name_mixed is not None
+
+        in_base_init = []
+
+        # for signal: Thing::StuffHappened (s, u)
+        # we want to emit:
+        # void tp_svc_thing_emit_stuff_happened (gpointer instance,
+        #    const char *arg0, guint arg1);
+
+        dbus_name = signal.getAttribute('name')
+        stub_name = (self.prefix_ + self.node_name_lc + '_emit_' +
+                     camelcase_to_lower(dbus_name))
+        const_name = self.get_signal_const_entry(signal)
+
+        # Gather arguments
+        args = []
+        for i in signal.getElementsByTagName('arg'):
+            name = i.getAttribute('name')
+            dtype = i.getAttribute('type')
+            tp_type = i.getAttribute('tp:type')
+
+            if name:
+                name = 'arg_' + name
+            else:
+                name = 'arg' + str(len(args))
+
+            ctype, gtype, marshaller, pointer = type_to_gtype(dtype)
+
+            if pointer:
+                ctype = 'const ' + ctype
+
+            struct = (ctype, name, gtype)
+            args.append(struct)
+
+        tmp = (['gpointer instance'] +
+               [ctype + name for (ctype, name, gtype) in args])
+
+        self.h(('void %s (' % stub_name) + (',\n    '.join(tmp)) + ');')
+
+        # FIXME: emit docs
+
+        self.b('/**')
+        self.b(' * %s:' % stub_name)
+        self.b(' * @instance: The object implementing this interface')
+        for (ctype, name, gtype) in args:
+            self.b(' * @%s: %s (FIXME, generate documentation)'
+                   % (name, ctype))
+        self.b(' *')
+        self.b(' * Type-safe wrapper around g_signal_emit to emit the')
+        self.b(' * %s signal on interface %s.'
+               % (dbus_name, self.iface_name))
+        self.b(' */')
+
+        self.b('void')
+        self.b(('%s (' % stub_name) + (',\n    '.join(tmp)) + ')')
+        self.b('{')
+        self.b('  g_assert (instance != NULL);')
+        self.b('  g_assert (G_TYPE_CHECK_INSTANCE_TYPE (instance, %s));'
+               % (self.current_gtype))
+        tmp = (['instance', '%s_signals[%s]' % (self.node_name_lc, const_name),
+                '0'] + [name for (ctype, name, gtype) in args])
+        self.b('  g_signal_emit (' + ',\n      '.join(tmp) + ');')
+        self.b('}')
+        self.b('')
+
+        in_base_init.append('  %s_signals[%s] ='
+                            % (self.node_name_lc, const_name))
+        in_base_init.append('  g_signal_new ("%s",'
+                % (dbus_gutils_wincaps_to_uscore(dbus_name).replace('_', '-')))
+        in_base_init.append('      G_OBJECT_CLASS_TYPE (klass),')
+        in_base_init.append('      G_SIGNAL_RUN_LAST|G_SIGNAL_DETAILED,')
+        in_base_init.append('      0,')
+        in_base_init.append('      NULL, NULL,')
+        in_base_init.append('      %s,'
+                % signal_to_marshal_name(signal, self.signal_marshal_prefix))
+        in_base_init.append('      G_TYPE_NONE,')
+        tmp = ['%d' % len(args)] + [gtype for (ctype, name, gtype) in args]
+        in_base_init.append('      %s);' % ',\n      '.join(tmp))
+        in_base_init.append('')
+
+        return in_base_init
+
+    def __call__(self):
+        self.h('#include <glib-object.h>')
+        self.h('#include <dbus/dbus-glib.h>')
+        self.h('#include <telepathy-glib/dbus-properties-mixin.h>')
+        self.h('')
+        self.h('G_BEGIN_DECLS')
+        self.h('')
+
+        self.b('#include "%s.h"' % basename)
+        self.b('')
+        for header in self.headers:
+            self.b('#include %s' % header)
+        self.b('')
+
+        nodes = self.dom.getElementsByTagName('node')
+        nodes.sort(cmp_by_name)
+
+        for node in nodes:
+            self.do_node(node)
+
+        self.h('')
+        self.h('G_END_DECLS')
+
+        self.b('')
+        for header in self.end_headers:
+            self.b('#include %s' % header)
+
+        self.h('')
+        self.b('')
+        open(basename + '.h', 'w').write('\n'.join(self.__header))
+        open(basename + '.c', 'w').write('\n'.join(self.__body))
+
+
+def cmdline_error():
+    print """\
+usage:
+    gen-ginterface [OPTIONS] xmlfile Prefix_
+options:
+    --include='<header.h>' (may be repeated)
+    --include='"header.h"' (ditto)
+    --include-end='"header.h"' (ditto)
+        Include extra headers in the generated .c file
+    --signal-marshal-prefix='prefix'
+        Use the given prefix on generated signal marshallers (default is
+        prefix.lower()).
+    --filename='BASENAME'
+        Set the basename for the output files (default is prefix.lower()
+        + 'ginterfaces')
+    --not-implemented-func='symbol'
+        Set action when methods not implemented in the interface vtable are
+        called. symbol must have signature
+            void symbol (DBusGMethodInvocation *context)
+        and return some sort of "not implemented" error via
+            dbus_g_method_return_error (context, ...)
+"""
+    sys.exit(1)
+
+
+if __name__ == '__main__':
+    from getopt import gnu_getopt
+
+    options, argv = gnu_getopt(sys.argv[1:], '',
+                               ['filename=', 'signal-marshal-prefix=',
+                                'include=', 'include-end=',
+                                'allow-unstable',
+                                'not-implemented-func='])
+
+    try:
+        prefix = argv[1]
+    except IndexError:
+        cmdline_error()
+
+    basename = prefix.lower() + 'ginterfaces'
+    signal_marshal_prefix = prefix.lower().rstrip('_')
+    headers = []
+    end_headers = []
+    not_implemented_func = ''
+    allow_havoc = False
+
+    for option, value in options:
+        if option == '--filename':
+            basename = value
+        elif option == '--signal-marshal-prefix':
+            signal_marshal_prefix = value
+        elif option == '--include':
+            if value[0] not in '<"':
+                value = '"%s"' % value
+            headers.append(value)
+        elif option == '--include-end':
+            if value[0] not in '<"':
+                value = '"%s"' % value
+            end_headers.append(value)
+        elif option == '--not-implemented-func':
+            not_implemented_func = value
+        elif option == '--allow-unstable':
+            allow_havoc = True
+
+    try:
+        dom = xml.dom.minidom.parse(argv[0])
+    except IndexError:
+        cmdline_error()
+
+    Generator(dom, prefix, basename, signal_marshal_prefix, headers,
+              end_headers, not_implemented_func, allow_havoc)()