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glib/gio/gdbusintrospection.c
Christian Hergert 18a33f72db introspection: use (nullable) or (optional) instead of (allow-none) 
If we have an input parameter (or return value) we need to use (nullable).
However, if it is an (inout) or (out) parameter, (optional) is sufficient.

It looks like (nullable) could be used for everything according to the
Annotation documentation, but (optional) is more specific.
2016-11-22 14:14:37 -08:00

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/* GDBus - GLib D-Bus Library
*
* Copyright (C) 2008-2010 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 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/>.
*
* Author: David Zeuthen <davidz@redhat.com>
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include "gdbusintrospection.h"
#include "glibintl.h"
/**
* SECTION:gdbusintrospection
* @title: D-Bus Introspection Data
* @short_description: Node and interface description data structures
* @include: gio/gio.h
*
* Various data structures and convenience routines to parse and
* generate D-Bus introspection XML. Introspection information is
* used when registering objects with g_dbus_connection_register_object().
*
* The format of D-Bus introspection XML is specified in the
* [D-Bus specification](http://dbus.freedesktop.org/doc/dbus-specification.html#introspection-format)
*/
/* ---------------------------------------------------------------------------------------------------- */
#define _MY_DEFINE_BOXED_TYPE(TypeName, type_name) \
G_DEFINE_BOXED_TYPE (TypeName, type_name, type_name##_ref, type_name##_unref)
_MY_DEFINE_BOXED_TYPE (GDBusNodeInfo, g_dbus_node_info);
_MY_DEFINE_BOXED_TYPE (GDBusInterfaceInfo, g_dbus_interface_info);
_MY_DEFINE_BOXED_TYPE (GDBusMethodInfo, g_dbus_method_info);
_MY_DEFINE_BOXED_TYPE (GDBusSignalInfo, g_dbus_signal_info);
_MY_DEFINE_BOXED_TYPE (GDBusPropertyInfo, g_dbus_property_info);
_MY_DEFINE_BOXED_TYPE (GDBusArgInfo, g_dbus_arg_info);
_MY_DEFINE_BOXED_TYPE (GDBusAnnotationInfo, g_dbus_annotation_info);
/* ---------------------------------------------------------------------------------------------------- */
typedef struct
{
/* stuff we are currently collecting */
GPtrArray *args;
GPtrArray *out_args;
GPtrArray *methods;
GPtrArray *signals;
GPtrArray *properties;
GPtrArray *interfaces;
GPtrArray *nodes;
GPtrArray *annotations;
/* A list of GPtrArray's containing annotations */
GSList *annotations_stack;
/* A list of GPtrArray's containing interfaces */
GSList *interfaces_stack;
/* A list of GPtrArray's containing nodes */
GSList *nodes_stack;
/* Whether the direction was "in" for last parsed arg */
gboolean last_arg_was_in;
/* Number of args currently being collected; used for assigning
* names to args without a "name" attribute
*/
guint num_args;
} ParseData;
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_node_info_ref:
* @info: A #GDBusNodeInfo
*
* If @info is statically allocated does nothing. Otherwise increases
* the reference count.
*
* Returns: The same @info.
*
* Since: 2.26
*/
GDBusNodeInfo *
g_dbus_node_info_ref (GDBusNodeInfo *info)
{
if (info->ref_count == -1)
return info;
g_atomic_int_inc (&info->ref_count);
return info;
}
/**
* g_dbus_interface_info_ref:
* @info: A #GDBusInterfaceInfo
*
* If @info is statically allocated does nothing. Otherwise increases
* the reference count.
*
* Returns: The same @info.
*
* Since: 2.26
*/
GDBusInterfaceInfo *
g_dbus_interface_info_ref (GDBusInterfaceInfo *info)
{
if (info->ref_count == -1)
return info;
g_atomic_int_inc (&info->ref_count);
return info;
}
/**
* g_dbus_method_info_ref:
* @info: A #GDBusMethodInfo
*
* If @info is statically allocated does nothing. Otherwise increases
* the reference count.
*
* Returns: The same @info.
*
* Since: 2.26
*/
GDBusMethodInfo *
g_dbus_method_info_ref (GDBusMethodInfo *info)
{
if (info->ref_count == -1)
return info;
g_atomic_int_inc (&info->ref_count);
return info;
}
/**
* g_dbus_signal_info_ref:
* @info: A #GDBusSignalInfo
*
* If @info is statically allocated does nothing. Otherwise increases
* the reference count.
*
* Returns: The same @info.
*
* Since: 2.26
*/
GDBusSignalInfo *
g_dbus_signal_info_ref (GDBusSignalInfo *info)
{
if (info->ref_count == -1)
return info;
g_atomic_int_inc (&info->ref_count);
return info;
}
/**
* g_dbus_property_info_ref:
* @info: A #GDBusPropertyInfo
*
* If @info is statically allocated does nothing. Otherwise increases
* the reference count.
*
* Returns: The same @info.
*
* Since: 2.26
*/
GDBusPropertyInfo *
g_dbus_property_info_ref (GDBusPropertyInfo *info)
{
if (info->ref_count == -1)
return info;
g_atomic_int_inc (&info->ref_count);
return info;
}
/**
* g_dbus_arg_info_ref:
* @info: A #GDBusArgInfo
*
* If @info is statically allocated does nothing. Otherwise increases
* the reference count.
*
* Returns: The same @info.
*
* Since: 2.26
*/
GDBusArgInfo *
g_dbus_arg_info_ref (GDBusArgInfo *info)
{
if (info->ref_count == -1)
return info;
g_atomic_int_inc (&info->ref_count);
return info;
}
/**
* g_dbus_annotation_info_ref:
* @info: A #GDBusNodeInfo
*
* If @info is statically allocated does nothing. Otherwise increases
* the reference count.
*
* Returns: The same @info.
*
* Since: 2.26
*/
GDBusAnnotationInfo *
g_dbus_annotation_info_ref (GDBusAnnotationInfo *info)
{
if (info->ref_count == -1)
return info;
g_atomic_int_inc (&info->ref_count);
return info;
}
/* ---------------------------------------------------------------------------------------------------- */
static void
free_null_terminated_array (gpointer array, GDestroyNotify unref_func)
{
guint n;
gpointer *p = array;
if (p == NULL)
return;
for (n = 0; p[n] != NULL; n++)
unref_func (p[n]);
g_free (p);
}
/**
* g_dbus_annotation_info_unref:
* @info: A #GDBusAnnotationInfo.
*
* If @info is statically allocated, does nothing. Otherwise decreases
* the reference count of @info. When its reference count drops to 0,
* the memory used is freed.
*
* Since: 2.26
*/
void
g_dbus_annotation_info_unref (GDBusAnnotationInfo *info)
{
if (info->ref_count == -1)
return;
if (g_atomic_int_dec_and_test (&info->ref_count))
{
g_free (info->key);
g_free (info->value);
free_null_terminated_array (info->annotations, (GDestroyNotify) g_dbus_annotation_info_unref);
g_free (info);
}
}
/**
* g_dbus_arg_info_unref:
* @info: A #GDBusArgInfo.
*
* If @info is statically allocated, does nothing. Otherwise decreases
* the reference count of @info. When its reference count drops to 0,
* the memory used is freed.
*
* Since: 2.26
*/
void
g_dbus_arg_info_unref (GDBusArgInfo *info)
{
if (info->ref_count == -1)
return;
if (g_atomic_int_dec_and_test (&info->ref_count))
{
g_free (info->name);
g_free (info->signature);
free_null_terminated_array (info->annotations, (GDestroyNotify) g_dbus_annotation_info_unref);
g_free (info);
}
}
/**
* g_dbus_method_info_unref:
* @info: A #GDBusMethodInfo.
*
* If @info is statically allocated, does nothing. Otherwise decreases
* the reference count of @info. When its reference count drops to 0,
* the memory used is freed.
*
* Since: 2.26
*/
void
g_dbus_method_info_unref (GDBusMethodInfo *info)
{
if (info->ref_count == -1)
return;
if (g_atomic_int_dec_and_test (&info->ref_count))
{
g_free (info->name);
free_null_terminated_array (info->in_args, (GDestroyNotify) g_dbus_arg_info_unref);
free_null_terminated_array (info->out_args, (GDestroyNotify) g_dbus_arg_info_unref);
free_null_terminated_array (info->annotations, (GDestroyNotify) g_dbus_annotation_info_unref);
g_free (info);
}
}
/**
* g_dbus_signal_info_unref:
* @info: A #GDBusSignalInfo.
*
* If @info is statically allocated, does nothing. Otherwise decreases
* the reference count of @info. When its reference count drops to 0,
* the memory used is freed.
*
* Since: 2.26
*/
void
g_dbus_signal_info_unref (GDBusSignalInfo *info)
{
if (info->ref_count == -1)
return;
if (g_atomic_int_dec_and_test (&info->ref_count))
{
g_free (info->name);
free_null_terminated_array (info->args, (GDestroyNotify) g_dbus_arg_info_unref);
free_null_terminated_array (info->annotations, (GDestroyNotify) g_dbus_annotation_info_unref);
g_free (info);
}
}
/**
* g_dbus_property_info_unref:
* @info: A #GDBusPropertyInfo.
*
* If @info is statically allocated, does nothing. Otherwise decreases
* the reference count of @info. When its reference count drops to 0,
* the memory used is freed.
*
* Since: 2.26
*/
void
g_dbus_property_info_unref (GDBusPropertyInfo *info)
{
if (info->ref_count == -1)
return;
if (g_atomic_int_dec_and_test (&info->ref_count))
{
g_free (info->name);
g_free (info->signature);
free_null_terminated_array (info->annotations, (GDestroyNotify) g_dbus_annotation_info_unref);
g_free (info);
}
}
/**
* g_dbus_interface_info_unref:
* @info: A #GDBusInterfaceInfo.
*
* If @info is statically allocated, does nothing. Otherwise decreases
* the reference count of @info. When its reference count drops to 0,
* the memory used is freed.
*
* Since: 2.26
*/
void
g_dbus_interface_info_unref (GDBusInterfaceInfo *info)
{
if (info->ref_count == -1)
return;
if (g_atomic_int_dec_and_test (&info->ref_count))
{
g_free (info->name);
free_null_terminated_array (info->methods, (GDestroyNotify) g_dbus_method_info_unref);
free_null_terminated_array (info->signals, (GDestroyNotify) g_dbus_signal_info_unref);
free_null_terminated_array (info->properties, (GDestroyNotify) g_dbus_property_info_unref);
free_null_terminated_array (info->annotations, (GDestroyNotify) g_dbus_annotation_info_unref);
g_free (info);
}
}
/**
* g_dbus_node_info_unref:
* @info: A #GDBusNodeInfo.
*
* If @info is statically allocated, does nothing. Otherwise decreases
* the reference count of @info. When its reference count drops to 0,
* the memory used is freed.
*
* Since: 2.26
*/
void
g_dbus_node_info_unref (GDBusNodeInfo *info)
{
if (info->ref_count == -1)
return;
if (g_atomic_int_dec_and_test (&info->ref_count))
{
g_free (info->path);
free_null_terminated_array (info->interfaces, (GDestroyNotify) g_dbus_interface_info_unref);
free_null_terminated_array (info->nodes, (GDestroyNotify) g_dbus_node_info_unref);
free_null_terminated_array (info->annotations, (GDestroyNotify) g_dbus_annotation_info_unref);
g_free (info);
}
}
/* ---------------------------------------------------------------------------------------------------- */
static void
g_dbus_annotation_info_set (ParseData *data,
GDBusAnnotationInfo *info,
const gchar *key,
const gchar *value,
GDBusAnnotationInfo **embedded_annotations)
{
info->ref_count = 1;
if (key != NULL)
info->key = g_strdup (key);
if (value != NULL)
info->value = g_strdup (value);
if (embedded_annotations != NULL)
info->annotations = embedded_annotations;
}
static void
g_dbus_arg_info_set (ParseData *data,
GDBusArgInfo *info,
const gchar *name,
const gchar *signature,
GDBusAnnotationInfo **annotations)
{
info->ref_count = 1;
/* name may be NULL - TODO: compute name? */
if (name != NULL)
info->name = g_strdup (name);
if (signature != NULL)
info->signature = g_strdup (signature);
if (annotations != NULL)
info->annotations = annotations;
}
static void
g_dbus_method_info_set (ParseData *data,
GDBusMethodInfo *info,
const gchar *name,
GDBusArgInfo **in_args,
GDBusArgInfo **out_args,
GDBusAnnotationInfo **annotations)
{
info->ref_count = 1;
if (name != NULL)
info->name = g_strdup (name);
if (in_args != NULL)
info->in_args = in_args;
if (out_args != NULL)
info->out_args = out_args;
if (annotations != NULL)
info->annotations = annotations;
}
static void
g_dbus_signal_info_set (ParseData *data,
GDBusSignalInfo *info,
const gchar *name,
GDBusArgInfo **args,
GDBusAnnotationInfo **annotations)
{
info->ref_count = 1;
if (name != NULL)
info->name = g_strdup (name);
if (args != NULL)
info->args = args;
if (annotations != NULL)
info->annotations = annotations;
}
static void
g_dbus_property_info_set (ParseData *data,
GDBusPropertyInfo *info,
const gchar *name,
const gchar *signature,
GDBusPropertyInfoFlags flags,
GDBusAnnotationInfo **annotations)
{
info->ref_count = 1;
if (name != NULL)
info->name = g_strdup (name);
if (flags != G_DBUS_PROPERTY_INFO_FLAGS_NONE)
info->flags = flags;
if (signature != NULL)
info->signature = g_strdup (signature);
if (annotations != NULL)
info->annotations = annotations;
}
static void
g_dbus_interface_info_set (ParseData *data,
GDBusInterfaceInfo *info,
const gchar *name,
GDBusMethodInfo **methods,
GDBusSignalInfo **signals,
GDBusPropertyInfo **properties,
GDBusAnnotationInfo **annotations)
{
info->ref_count = 1;
if (name != NULL)
info->name = g_strdup (name);
if (methods != NULL)
info->methods = methods;
if (signals != NULL)
info->signals = signals;
if (properties != NULL)
info->properties = properties;
if (annotations != NULL)
info->annotations = annotations;
}
static void
g_dbus_node_info_set (ParseData *data,
GDBusNodeInfo *info,
const gchar *path,
GDBusInterfaceInfo **interfaces,
GDBusNodeInfo **nodes,
GDBusAnnotationInfo **annotations)
{
info->ref_count = 1;
if (path != NULL)
{
info->path = g_strdup (path);
/* TODO: relative / absolute path snafu */
}
if (interfaces != NULL)
info->interfaces = interfaces;
if (nodes != NULL)
info->nodes = nodes;
if (annotations != NULL)
info->annotations = annotations;
}
/* ---------------------------------------------------------------------------------------------------- */
static void
g_dbus_annotation_info_generate_xml (GDBusAnnotationInfo *info,
guint indent,
GString *string_builder)
{
gchar *tmp;
guint n;
tmp = g_markup_printf_escaped ("%*s<annotation name=\"%s\" value=\"%s\"",
indent, "",
info->key,
info->value);
g_string_append (string_builder, tmp);
g_free (tmp);
if (info->annotations == NULL)
{
g_string_append (string_builder, "/>\n");
}
else
{
g_string_append (string_builder, ">\n");
for (n = 0; info->annotations != NULL && info->annotations[n] != NULL; n++)
g_dbus_annotation_info_generate_xml (info->annotations[n],
indent + 2,
string_builder);
g_string_append_printf (string_builder, "%*s</annotation>\n",
indent, "");
}
}
static void
g_dbus_arg_info_generate_xml (GDBusArgInfo *info,
guint indent,
const gchar *extra_attributes,
GString *string_builder)
{
guint n;
g_string_append_printf (string_builder, "%*s<arg type=\"%s\"",
indent, "",
info->signature);
if (info->name != NULL)
g_string_append_printf (string_builder, " name=\"%s\"", info->name);
if (extra_attributes != NULL)
g_string_append_printf (string_builder, " %s", extra_attributes);
if (info->annotations == NULL)
{
g_string_append (string_builder, "/>\n");
}
else
{
g_string_append (string_builder, ">\n");
for (n = 0; info->annotations != NULL && info->annotations[n] != NULL; n++)
g_dbus_annotation_info_generate_xml (info->annotations[n],
indent + 2,
string_builder);
g_string_append_printf (string_builder, "%*s</arg>\n", indent, "");
}
}
static void
g_dbus_method_info_generate_xml (GDBusMethodInfo *info,
guint indent,
GString *string_builder)
{
guint n;
g_string_append_printf (string_builder, "%*s<method name=\"%s\"",
indent, "",
info->name);
if (info->annotations == NULL && info->in_args == NULL && info->out_args == NULL)
{
g_string_append (string_builder, "/>\n");
}
else
{
g_string_append (string_builder, ">\n");
for (n = 0; info->annotations != NULL && info->annotations[n] != NULL; n++)
g_dbus_annotation_info_generate_xml (info->annotations[n],
indent + 2,
string_builder);
for (n = 0; info->in_args != NULL && info->in_args[n] != NULL; n++)
g_dbus_arg_info_generate_xml (info->in_args[n],
indent + 2,
"direction=\"in\"",
string_builder);
for (n = 0; info->out_args != NULL && info->out_args[n] != NULL; n++)
g_dbus_arg_info_generate_xml (info->out_args[n],
indent + 2,
"direction=\"out\"",
string_builder);
g_string_append_printf (string_builder, "%*s</method>\n", indent, "");
}
}
static void
g_dbus_signal_info_generate_xml (GDBusSignalInfo *info,
guint indent,
GString *string_builder)
{
guint n;
g_string_append_printf (string_builder, "%*s<signal name=\"%s\"",
indent, "",
info->name);
if (info->annotations == NULL && info->args == NULL)
{
g_string_append (string_builder, "/>\n");
}
else
{
g_string_append (string_builder, ">\n");
for (n = 0; info->annotations != NULL && info->annotations[n] != NULL; n++)
g_dbus_annotation_info_generate_xml (info->annotations[n],
indent + 2,
string_builder);
for (n = 0; info->args != NULL && info->args[n] != NULL; n++)
g_dbus_arg_info_generate_xml (info->args[n],
indent + 2,
NULL,
string_builder);
g_string_append_printf (string_builder, "%*s</signal>\n", indent, "");
}
}
static void
g_dbus_property_info_generate_xml (GDBusPropertyInfo *info,
guint indent,
GString *string_builder)
{
guint n;
const gchar *access_string;
if ((info->flags & G_DBUS_PROPERTY_INFO_FLAGS_READABLE) &&
(info->flags & G_DBUS_PROPERTY_INFO_FLAGS_WRITABLE))
{
access_string = "readwrite";
}
else if (info->flags & G_DBUS_PROPERTY_INFO_FLAGS_READABLE)
{
access_string = "read";
}
else if (info->flags & G_DBUS_PROPERTY_INFO_FLAGS_WRITABLE)
{
access_string = "write";
}
else
{
g_assert_not_reached ();
}
g_string_append_printf (string_builder, "%*s<property type=\"%s\" name=\"%s\" access=\"%s\"",
indent, "",
info->signature,
info->name,
access_string);
if (info->annotations == NULL)
{
g_string_append (string_builder, "/>\n");
}
else
{
g_string_append (string_builder, ">\n");
for (n = 0; info->annotations != NULL && info->annotations[n] != NULL; n++)
g_dbus_annotation_info_generate_xml (info->annotations[n],
indent + 2,
string_builder);
g_string_append_printf (string_builder, "%*s</property>\n", indent, "");
}
}
/**
* g_dbus_interface_info_generate_xml:
* @info: A #GDBusNodeInfo
* @indent: Indentation level.
* @string_builder: (out): A #GString to to append XML data to.
*
* Appends an XML representation of @info (and its children) to @string_builder.
*
* This function is typically used for generating introspection XML
* documents at run-time for handling the
* `org.freedesktop.DBus.Introspectable.Introspect`
* method.
*
* Since: 2.26
*/
void
g_dbus_interface_info_generate_xml (GDBusInterfaceInfo *info,
guint indent,
GString *string_builder)
{
guint n;
g_string_append_printf (string_builder, "%*s<interface name=\"%s\">\n",
indent, "",
info->name);
for (n = 0; info->annotations != NULL && info->annotations[n] != NULL; n++)
g_dbus_annotation_info_generate_xml (info->annotations[n],
indent + 2,
string_builder);
for (n = 0; info->methods != NULL && info->methods[n] != NULL; n++)
g_dbus_method_info_generate_xml (info->methods[n],
indent + 2,
string_builder);
for (n = 0; info->signals != NULL && info->signals[n] != NULL; n++)
g_dbus_signal_info_generate_xml (info->signals[n],
indent + 2,
string_builder);
for (n = 0; info->properties != NULL && info->properties[n] != NULL; n++)
g_dbus_property_info_generate_xml (info->properties[n],
indent + 2,
string_builder);
g_string_append_printf (string_builder, "%*s</interface>\n", indent, "");
}
/**
* g_dbus_node_info_generate_xml:
* @info: A #GDBusNodeInfo.
* @indent: Indentation level.
* @string_builder: (out): A #GString to to append XML data to.
*
* Appends an XML representation of @info (and its children) to @string_builder.
*
* This function is typically used for generating introspection XML documents at run-time for
* handling the `org.freedesktop.DBus.Introspectable.Introspect` method.
*
* Since: 2.26
*/
void
g_dbus_node_info_generate_xml (GDBusNodeInfo *info,
guint indent,
GString *string_builder)
{
guint n;
g_string_append_printf (string_builder, "%*s<node", indent, "");
if (info->path != NULL)
g_string_append_printf (string_builder, " name=\"%s\"", info->path);
if (info->interfaces == NULL && info->nodes == NULL && info->annotations == NULL)
{
g_string_append (string_builder, "/>\n");
}
else
{
g_string_append (string_builder, ">\n");
for (n = 0; info->annotations != NULL && info->annotations[n] != NULL; n++)
g_dbus_annotation_info_generate_xml (info->annotations[n],
indent + 2,
string_builder);
for (n = 0; info->interfaces != NULL && info->interfaces[n] != NULL; n++)
g_dbus_interface_info_generate_xml (info->interfaces[n],
indent + 2,
string_builder);
for (n = 0; info->nodes != NULL && info->nodes[n] != NULL; n++)
g_dbus_node_info_generate_xml (info->nodes[n],
indent + 2,
string_builder);
g_string_append_printf (string_builder, "%*s</node>\n", indent, "");
}
}
/* ---------------------------------------------------------------------------------------------------- */
static GDBusAnnotationInfo **
parse_data_steal_annotations (ParseData *data,
guint *out_num_elements)
{
GDBusAnnotationInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->annotations->len;
if (data->annotations == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->annotations, NULL);
ret = (GDBusAnnotationInfo **) g_ptr_array_free (data->annotations, FALSE);
}
data->annotations = g_ptr_array_new ();
return ret;
}
static GDBusArgInfo **
parse_data_steal_args (ParseData *data,
guint *out_num_elements)
{
GDBusArgInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->args->len;
if (data->args == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->args, NULL);
ret = (GDBusArgInfo **) g_ptr_array_free (data->args, FALSE);
}
data->args = g_ptr_array_new ();
return ret;
}
static GDBusArgInfo **
parse_data_steal_out_args (ParseData *data,
guint *out_num_elements)
{
GDBusArgInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->out_args->len;
if (data->out_args == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->out_args, NULL);
ret = (GDBusArgInfo **) g_ptr_array_free (data->out_args, FALSE);
}
data->out_args = g_ptr_array_new ();
return ret;
}
static GDBusMethodInfo **
parse_data_steal_methods (ParseData *data,
guint *out_num_elements)
{
GDBusMethodInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->methods->len;
if (data->methods == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->methods, NULL);
ret = (GDBusMethodInfo **) g_ptr_array_free (data->methods, FALSE);
}
data->methods = g_ptr_array_new ();
return ret;
}
static GDBusSignalInfo **
parse_data_steal_signals (ParseData *data,
guint *out_num_elements)
{
GDBusSignalInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->signals->len;
if (data->signals == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->signals, NULL);
ret = (GDBusSignalInfo **) g_ptr_array_free (data->signals, FALSE);
}
data->signals = g_ptr_array_new ();
return ret;
}
static GDBusPropertyInfo **
parse_data_steal_properties (ParseData *data,
guint *out_num_elements)
{
GDBusPropertyInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->properties->len;
if (data->properties == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->properties, NULL);
ret = (GDBusPropertyInfo **) g_ptr_array_free (data->properties, FALSE);
}
data->properties = g_ptr_array_new ();
return ret;
}
static GDBusInterfaceInfo **
parse_data_steal_interfaces (ParseData *data,
guint *out_num_elements)
{
GDBusInterfaceInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->interfaces->len;
if (data->interfaces == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->interfaces, NULL);
ret = (GDBusInterfaceInfo **) g_ptr_array_free (data->interfaces, FALSE);
}
data->interfaces = g_ptr_array_new ();
return ret;
}
static GDBusNodeInfo **
parse_data_steal_nodes (ParseData *data,
guint *out_num_elements)
{
GDBusNodeInfo **ret;
if (out_num_elements != NULL)
*out_num_elements = data->nodes->len;
if (data->nodes == NULL)
ret = NULL;
else
{
g_ptr_array_add (data->nodes, NULL);
ret = (GDBusNodeInfo **) g_ptr_array_free (data->nodes, FALSE);
}
data->nodes = g_ptr_array_new ();
return ret;
}
/* ---------------------------------------------------------------------------------------------------- */
static void
parse_data_free_annotations (ParseData *data)
{
if (data->annotations == NULL)
return;
g_ptr_array_foreach (data->annotations, (GFunc) g_dbus_annotation_info_unref, NULL);
g_ptr_array_free (data->annotations, TRUE);
data->annotations = NULL;
}
static void
parse_data_free_args (ParseData *data)
{
if (data->args == NULL)
return;
g_ptr_array_foreach (data->args, (GFunc) g_dbus_arg_info_unref, NULL);
g_ptr_array_free (data->args, TRUE);
data->args = NULL;
}
static void
parse_data_free_out_args (ParseData *data)
{
if (data->out_args == NULL)
return;
g_ptr_array_foreach (data->out_args, (GFunc) g_dbus_arg_info_unref, NULL);
g_ptr_array_free (data->out_args, TRUE);
data->out_args = NULL;
}
static void
parse_data_free_methods (ParseData *data)
{
if (data->methods == NULL)
return;
g_ptr_array_foreach (data->methods, (GFunc) g_dbus_method_info_unref, NULL);
g_ptr_array_free (data->methods, TRUE);
data->methods = NULL;
}
static void
parse_data_free_signals (ParseData *data)
{
if (data->signals == NULL)
return;
g_ptr_array_foreach (data->signals, (GFunc) g_dbus_signal_info_unref, NULL);
g_ptr_array_free (data->signals, TRUE);
data->signals = NULL;
}
static void
parse_data_free_properties (ParseData *data)
{
if (data->properties == NULL)
return;
g_ptr_array_foreach (data->properties, (GFunc) g_dbus_property_info_unref, NULL);
g_ptr_array_free (data->properties, TRUE);
data->properties = NULL;
}
static void
parse_data_free_interfaces (ParseData *data)
{
if (data->interfaces == NULL)
return;
g_ptr_array_foreach (data->interfaces, (GFunc) g_dbus_interface_info_unref, NULL);
g_ptr_array_free (data->interfaces, TRUE);
data->interfaces = NULL;
}
static void
parse_data_free_nodes (ParseData *data)
{
if (data->nodes == NULL)
return;
g_ptr_array_foreach (data->nodes, (GFunc) g_dbus_node_info_unref, NULL);
g_ptr_array_free (data->nodes, TRUE);
data->nodes = NULL;
}
/* ---------------------------------------------------------------------------------------------------- */
static GDBusAnnotationInfo *
parse_data_get_annotation (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->annotations, g_new0 (GDBusAnnotationInfo, 1));
return data->annotations->pdata[data->annotations->len - 1];
}
static GDBusArgInfo *
parse_data_get_arg (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->args, g_new0 (GDBusArgInfo, 1));
return data->args->pdata[data->args->len - 1];
}
static GDBusArgInfo *
parse_data_get_out_arg (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->out_args, g_new0 (GDBusArgInfo, 1));
return data->out_args->pdata[data->out_args->len - 1];
}
static GDBusMethodInfo *
parse_data_get_method (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->methods, g_new0 (GDBusMethodInfo, 1));
return data->methods->pdata[data->methods->len - 1];
}
static GDBusSignalInfo *
parse_data_get_signal (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->signals, g_new0 (GDBusSignalInfo, 1));
return data->signals->pdata[data->signals->len - 1];
}
static GDBusPropertyInfo *
parse_data_get_property (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->properties, g_new0 (GDBusPropertyInfo, 1));
return data->properties->pdata[data->properties->len - 1];
}
static GDBusInterfaceInfo *
parse_data_get_interface (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->interfaces, g_new0 (GDBusInterfaceInfo, 1));
return data->interfaces->pdata[data->interfaces->len - 1];
}
static GDBusNodeInfo *
parse_data_get_node (ParseData *data,
gboolean create_new)
{
if (create_new)
g_ptr_array_add (data->nodes, g_new0 (GDBusNodeInfo, 1));
return data->nodes->pdata[data->nodes->len - 1];
}
/* ---------------------------------------------------------------------------------------------------- */
static ParseData *
parse_data_new (void)
{
ParseData *data;
data = g_new0 (ParseData, 1);
/* initialize arrays */
parse_data_steal_annotations (data, NULL);
parse_data_steal_args (data, NULL);
parse_data_steal_out_args (data, NULL);
parse_data_steal_methods (data, NULL);
parse_data_steal_signals (data, NULL);
parse_data_steal_properties (data, NULL);
parse_data_steal_interfaces (data, NULL);
parse_data_steal_nodes (data, NULL);
return data;
}
static void
parse_data_free (ParseData *data)
{
GSList *l;
/* free stack of annotation arrays */
for (l = data->annotations_stack; l != NULL; l = l->next)
{
GPtrArray *annotations = l->data;
g_ptr_array_foreach (annotations, (GFunc) g_dbus_annotation_info_unref, NULL);
g_ptr_array_free (annotations, TRUE);
}
g_slist_free (data->annotations_stack);
/* free stack of interface arrays */
for (l = data->interfaces_stack; l != NULL; l = l->next)
{
GPtrArray *interfaces = l->data;
g_ptr_array_foreach (interfaces, (GFunc) g_dbus_interface_info_unref, NULL);
g_ptr_array_free (interfaces, TRUE);
}
g_slist_free (data->interfaces_stack);
/* free stack of node arrays */
for (l = data->nodes_stack; l != NULL; l = l->next)
{
GPtrArray *nodes = l->data;
g_ptr_array_foreach (nodes, (GFunc) g_dbus_node_info_unref, NULL);
g_ptr_array_free (nodes, TRUE);
}
g_slist_free (data->nodes_stack);
/* free arrays (data->annotations, data->interfaces and data->nodes have been freed above) */
parse_data_free_args (data);
parse_data_free_out_args (data);
parse_data_free_methods (data);
parse_data_free_signals (data);
parse_data_free_properties (data);
parse_data_free_interfaces (data);
parse_data_free_annotations (data);
parse_data_free_nodes (data);
g_free (data);
}
/* ---------------------------------------------------------------------------------------------------- */
static void
parser_start_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
gpointer user_data,
GError **error)
{
ParseData *data = user_data;
GSList *stack;
const gchar *name;
const gchar *type;
const gchar *access;
const gchar *direction;
const gchar *value;
name = NULL;
type = NULL;
access = NULL;
direction = NULL;
value = NULL;
stack = (GSList *) g_markup_parse_context_get_element_stack (context);
/* ---------------------------------------------------------------------------------------------------- */
if (strcmp (element_name, "node") == 0)
{
if (!(g_slist_length (stack) >= 1 || strcmp (stack->next->data, "node") != 0))
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"<node> elements can only be top-level or embedded in other <node> elements");
goto out;
}
if (!g_markup_collect_attributes (element_name,
attribute_names,
attribute_values,
error,
G_MARKUP_COLLECT_STRING | G_MARKUP_COLLECT_OPTIONAL, "name", &name,
/* some hand-written introspection XML documents use this */
G_MARKUP_COLLECT_STRING | G_MARKUP_COLLECT_OPTIONAL, "xmlns:doc", NULL,
G_MARKUP_COLLECT_INVALID))
goto out;
g_dbus_node_info_set (data,
parse_data_get_node (data, TRUE),
name,
NULL,
NULL,
NULL);
/* push the currently retrieved interfaces and nodes on the stack and prepare new arrays */
data->interfaces_stack = g_slist_prepend (data->interfaces_stack, data->interfaces);
data->interfaces = NULL;
parse_data_steal_interfaces (data, NULL);
data->nodes_stack = g_slist_prepend (data->nodes_stack, data->nodes);
data->nodes = NULL;
parse_data_steal_nodes (data, NULL);
}
/* ---------------------------------------------------------------------------------------------------- */
else if (strcmp (element_name, "interface") == 0)
{
if (g_slist_length (stack) < 2 || strcmp (stack->next->data, "node") != 0)
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"<interface> elements can only be embedded in <node> elements");
goto out;
}
if (!g_markup_collect_attributes (element_name,
attribute_names,
attribute_values,
error,
G_MARKUP_COLLECT_STRING, "name", &name,
/* seen in the wild */
G_MARKUP_COLLECT_STRING | G_MARKUP_COLLECT_OPTIONAL, "version", NULL,
G_MARKUP_COLLECT_INVALID))
goto out;
g_dbus_interface_info_set (data,
parse_data_get_interface (data, TRUE),
name,
NULL,
NULL,
NULL,
NULL);
}
/* ---------------------------------------------------------------------------------------------------- */
else if (strcmp (element_name, "method") == 0)
{
if (g_slist_length (stack) < 2 || strcmp (stack->next->data, "interface") != 0)
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"<method> elements can only be embedded in <interface> elements");
goto out;
}
if (!g_markup_collect_attributes (element_name,
attribute_names,
attribute_values,
error,
G_MARKUP_COLLECT_STRING, "name", &name,
/* seen in the wild */
G_MARKUP_COLLECT_STRING | G_MARKUP_COLLECT_OPTIONAL, "version", NULL,
G_MARKUP_COLLECT_INVALID))
goto out;
g_dbus_method_info_set (data,
parse_data_get_method (data, TRUE),
name,
NULL,
NULL,
NULL);
data->num_args = 0;
}
/* ---------------------------------------------------------------------------------------------------- */
else if (strcmp (element_name, "signal") == 0)
{
if (g_slist_length (stack) < 2 || strcmp (stack->next->data, "interface") != 0)
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"<signal> elements can only be embedded in <interface> elements");
goto out;
}
if (!g_markup_collect_attributes (element_name,
attribute_names,
attribute_values,
error,
G_MARKUP_COLLECT_STRING, "name", &name,
G_MARKUP_COLLECT_INVALID))
goto out;
g_dbus_signal_info_set (data,
parse_data_get_signal (data, TRUE),
name,
NULL,
NULL);
data->num_args = 0;
}
/* ---------------------------------------------------------------------------------------------------- */
else if (strcmp (element_name, "property") == 0)
{
GDBusPropertyInfoFlags flags;
if (g_slist_length (stack) < 2 || strcmp (stack->next->data, "interface") != 0)
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"<property> elements can only be embedded in <interface> elements");
goto out;
}
if (!g_markup_collect_attributes (element_name,
attribute_names,
attribute_values,
error,
G_MARKUP_COLLECT_STRING, "name", &name,
G_MARKUP_COLLECT_STRING, "type", &type,
G_MARKUP_COLLECT_STRING, "access", &access,
G_MARKUP_COLLECT_INVALID))
goto out;
if (strcmp (access, "read") == 0)
flags = G_DBUS_PROPERTY_INFO_FLAGS_READABLE;
else if (strcmp (access, "write") == 0)
flags = G_DBUS_PROPERTY_INFO_FLAGS_WRITABLE;
else if (strcmp (access, "readwrite") == 0)
flags = G_DBUS_PROPERTY_INFO_FLAGS_READABLE | G_DBUS_PROPERTY_INFO_FLAGS_WRITABLE;
else
{
g_set_error (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"Unknown value '%s' of access attribute for element <property>",
access);
goto out;
}
g_dbus_property_info_set (data,
parse_data_get_property (data, TRUE),
name,
type,
flags,
NULL);
}
/* ---------------------------------------------------------------------------------------------------- */
else if (strcmp (element_name, "arg") == 0)
{
gboolean is_in;
gchar *name_to_use;
if (g_slist_length (stack) < 2 ||
(strcmp (stack->next->data, "method") != 0 &&
strcmp (stack->next->data, "signal") != 0))
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"<arg> elements can only be embedded in <method> or <signal> elements");
goto out;
}
if (!g_markup_collect_attributes (element_name,
attribute_names,
attribute_values,
error,
G_MARKUP_COLLECT_STRING | G_MARKUP_COLLECT_OPTIONAL, "name", &name,
G_MARKUP_COLLECT_STRING | G_MARKUP_COLLECT_OPTIONAL, "direction", &direction,
G_MARKUP_COLLECT_STRING, "type", &type,
G_MARKUP_COLLECT_INVALID))
goto out;
if (strcmp (stack->next->data, "method") == 0)
is_in = TRUE;
else
is_in = FALSE;
if (direction != NULL)
{
if (strcmp (direction, "in") == 0)
is_in = TRUE;
else if (strcmp (direction, "out") == 0)
is_in = FALSE;
else
{
g_set_error (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"Unknown value '%s' of direction attribute",
direction);
goto out;
}
}
if (is_in && strcmp (stack->next->data, "signal") == 0)
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"Only direction 'out' is allowed for <arg> elements embedded in <signal>");
goto out;
}
if (name == NULL)
name_to_use = g_strdup_printf ("arg_%d", data->num_args);
else
name_to_use = g_strdup (name);
data->num_args++;
if (is_in)
{
g_dbus_arg_info_set (data,
parse_data_get_arg (data, TRUE),
name_to_use,
type,
NULL);
data->last_arg_was_in = TRUE;
}
else
{
g_dbus_arg_info_set (data,
parse_data_get_out_arg (data, TRUE),
name_to_use,
type,
NULL);
data->last_arg_was_in = FALSE;
}
g_free (name_to_use);
}
/* ---------------------------------------------------------------------------------------------------- */
else if (strcmp (element_name, "annotation") == 0)
{
if (g_slist_length (stack) < 2 ||
(strcmp (stack->next->data, "node") != 0 &&
strcmp (stack->next->data, "interface") != 0 &&
strcmp (stack->next->data, "signal") != 0 &&
strcmp (stack->next->data, "method") != 0 &&
strcmp (stack->next->data, "property") != 0 &&
strcmp (stack->next->data, "arg") != 0 &&
strcmp (stack->next->data, "annotation") != 0))
{
g_set_error_literal (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"<annotation> elements can only be embedded in <node>, <interface>, <signal>, <method>, <property>, <arg> or <annotation> elements");
goto out;
}
if (!g_markup_collect_attributes (element_name,
attribute_names,
attribute_values,
error,
G_MARKUP_COLLECT_STRING, "name", &name,
G_MARKUP_COLLECT_STRING, "value", &value,
G_MARKUP_COLLECT_INVALID))
goto out;
g_dbus_annotation_info_set (data,
parse_data_get_annotation (data, TRUE),
name,
value,
NULL);
}
/* ---------------------------------------------------------------------------------------------------- */
else
{
/* don't bail on unknown elements; just ignore them */
}
/* ---------------------------------------------------------------------------------------------------- */
/* push the currently retrieved annotations on the stack and prepare a new one */
data->annotations_stack = g_slist_prepend (data->annotations_stack, data->annotations);
data->annotations = NULL;
parse_data_steal_annotations (data, NULL);
out:
;
}
/* ---------------------------------------------------------------------------------------------------- */
static GDBusAnnotationInfo **
steal_annotations (ParseData *data)
{
return parse_data_steal_annotations (data, NULL);
}
static void
parser_end_element (GMarkupParseContext *context,
const gchar *element_name,
gpointer user_data,
GError **error)
{
ParseData *data = user_data;
gboolean have_popped_annotations;
have_popped_annotations = FALSE;
if (strcmp (element_name, "node") == 0)
{
guint num_nodes;
guint num_interfaces;
GDBusNodeInfo **nodes;
GDBusInterfaceInfo **interfaces;
nodes = parse_data_steal_nodes (data, &num_nodes);
interfaces = parse_data_steal_interfaces (data, &num_interfaces);
/* destroy the nodes, interfaces for scope we're exiting and and pop the nodes, interfaces from the
* scope we're reentering
*/
parse_data_free_interfaces (data);
data->interfaces = (GPtrArray *) data->interfaces_stack->data;
data->interfaces_stack = g_slist_remove (data->interfaces_stack, data->interfaces_stack->data);
parse_data_free_nodes (data);
data->nodes = (GPtrArray *) data->nodes_stack->data;
data->nodes_stack = g_slist_remove (data->nodes_stack, data->nodes_stack->data);
g_dbus_node_info_set (data,
parse_data_get_node (data, FALSE),
NULL,
interfaces,
nodes,
steal_annotations (data));
}
else if (strcmp (element_name, "interface") == 0)
{
guint num_methods;
guint num_signals;
guint num_properties;
GDBusMethodInfo **methods;
GDBusSignalInfo **signals;
GDBusPropertyInfo **properties;
methods = parse_data_steal_methods (data, &num_methods);
signals = parse_data_steal_signals (data, &num_signals);
properties = parse_data_steal_properties (data, &num_properties);
g_dbus_interface_info_set (data,
parse_data_get_interface (data, FALSE),
NULL,
methods,
signals,
properties,
steal_annotations (data));
}
else if (strcmp (element_name, "method") == 0)
{
guint in_num_args;
guint out_num_args;
GDBusArgInfo **in_args;
GDBusArgInfo **out_args;
in_args = parse_data_steal_args (data, &in_num_args);
out_args = parse_data_steal_out_args (data, &out_num_args);
g_dbus_method_info_set (data,
parse_data_get_method (data, FALSE),
NULL,
in_args,
out_args,
steal_annotations (data));
}
else if (strcmp (element_name, "signal") == 0)
{
guint num_args;
GDBusArgInfo **args;
args = parse_data_steal_out_args (data, &num_args);
g_dbus_signal_info_set (data,
parse_data_get_signal (data, FALSE),
NULL,
args,
steal_annotations (data));
}
else if (strcmp (element_name, "property") == 0)
{
g_dbus_property_info_set (data,
parse_data_get_property (data, FALSE),
NULL,
NULL,
G_DBUS_PROPERTY_INFO_FLAGS_NONE,
steal_annotations (data));
}
else if (strcmp (element_name, "arg") == 0)
{
g_dbus_arg_info_set (data,
data->last_arg_was_in ? parse_data_get_arg (data, FALSE) : parse_data_get_out_arg (data, FALSE),
NULL,
NULL,
steal_annotations (data));
}
else if (strcmp (element_name, "annotation") == 0)
{
GDBusAnnotationInfo **embedded_annotations;
embedded_annotations = steal_annotations (data);
/* destroy the annotations for scope we're exiting and and pop the annotations from the scope we're reentering */
parse_data_free_annotations (data);
data->annotations = (GPtrArray *) data->annotations_stack->data;
data->annotations_stack = g_slist_remove (data->annotations_stack, data->annotations_stack->data);
have_popped_annotations = TRUE;
g_dbus_annotation_info_set (data,
parse_data_get_annotation (data, FALSE),
NULL,
NULL,
embedded_annotations);
}
else
{
/* don't bail on unknown elements; just ignore them */
}
if (!have_popped_annotations)
{
/* destroy the annotations for scope we're exiting and and pop the annotations from the scope we're reentering */
parse_data_free_annotations (data);
data->annotations = (GPtrArray *) data->annotations_stack->data;
data->annotations_stack = g_slist_remove (data->annotations_stack, data->annotations_stack->data);
}
}
/* ---------------------------------------------------------------------------------------------------- */
static void
parser_error (GMarkupParseContext *context,
GError *error,
gpointer user_data)
{
gint line_number;
gint char_number;
g_markup_parse_context_get_position (context, &line_number, &char_number);
g_prefix_error (&error, "%d:%d: ",
line_number,
char_number);
}
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_node_info_new_for_xml:
* @xml_data: Valid D-Bus introspection XML.
* @error: Return location for error.
*
* Parses @xml_data and returns a #GDBusNodeInfo representing the data.
*
* The introspection XML must contain exactly one top-level
* <node> element.
*
* Note that this routine is using a
* [GMarkup][glib-Simple-XML-Subset-Parser.description]-based
* parser that only accepts a subset of valid XML documents.
*
* Returns: A #GDBusNodeInfo structure or %NULL if @error is set. Free
* with g_dbus_node_info_unref().
*
* Since: 2.26
*/
GDBusNodeInfo *
g_dbus_node_info_new_for_xml (const gchar *xml_data,
GError **error)
{
GDBusNodeInfo *ret;
GMarkupParseContext *context;
GMarkupParser *parser;
guint num_nodes;
ParseData *data;
GDBusNodeInfo **ughret;
ret = NULL;
parser = NULL;
context = NULL;
parser = g_new0 (GMarkupParser, 1);
parser->start_element = parser_start_element;
parser->end_element = parser_end_element;
parser->error = parser_error;
data = parse_data_new ();
context = g_markup_parse_context_new (parser,
G_MARKUP_IGNORE_QUALIFIED,
data,
(GDestroyNotify) parse_data_free);
if (!g_markup_parse_context_parse (context,
xml_data,
strlen (xml_data),
error))
goto out;
if (!g_markup_parse_context_end_parse (context, error))
goto out;
ughret = parse_data_steal_nodes (data, &num_nodes);
if (num_nodes != 1)
{
guint n;
g_set_error (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_INVALID_CONTENT,
"Expected a single node in introspection XML, found %d",
num_nodes);
/* clean up */
for (n = 0; n < num_nodes; n++)
{
g_dbus_node_info_unref (ughret[n]);
ughret[n] = NULL;
}
}
ret = ughret[0];
g_free (ughret);
out:
g_free (parser);
if (context != NULL)
g_markup_parse_context_free (context);
return ret;
}
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_annotation_info_lookup:
* @annotations: (array zero-terminated=1) (nullable): A %NULL-terminated array of annotations or %NULL.
* @name: The name of the annotation to look up.
*
* Looks up the value of an annotation.
*
* The cost of this function is O(n) in number of annotations.
*
* Returns: The value or %NULL if not found. Do not free, it is owned by @annotations.
*
* Since: 2.26
*/
const gchar *
g_dbus_annotation_info_lookup (GDBusAnnotationInfo **annotations,
const gchar *name)
{
guint n;
const gchar *ret;
ret = NULL;
for (n = 0; annotations != NULL && annotations[n] != NULL; n++)
{
if (g_strcmp0 (annotations[n]->key, name) == 0)
{
ret = annotations[n]->value;
goto out;
}
}
out:
return ret;
}
/* ---------------------------------------------------------------------------------------------------- */
G_LOCK_DEFINE_STATIC (info_cache_lock);
typedef struct
{
gint use_count;
/* gchar* -> GDBusMethodInfo* */
GHashTable *method_name_to_data;
/* gchar* -> GDBusMethodInfo* */
GHashTable *signal_name_to_data;
/* gchar* -> GDBusMethodInfo* */
GHashTable *property_name_to_data;
} InfoCacheEntry;
static void
info_cache_free (InfoCacheEntry *cache)
{
g_assert (cache->use_count == 0);
g_hash_table_unref (cache->method_name_to_data);
g_hash_table_unref (cache->signal_name_to_data);
g_hash_table_unref (cache->property_name_to_data);
g_slice_free (InfoCacheEntry, cache);
}
/* maps from GDBusInterfaceInfo* to InfoCacheEntry* */
static GHashTable *info_cache = NULL;
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_interface_info_lookup_method:
* @info: A #GDBusInterfaceInfo.
* @name: A D-Bus method name (typically in CamelCase)
*
* Looks up information about a method.
*
* The cost of this function is O(n) in number of methods unless
* g_dbus_interface_info_cache_build() has been used on @info.
*
* Returns: (transfer none): A #GDBusMethodInfo or %NULL if not found. Do not free, it is owned by @info.
*
* Since: 2.26
*/
GDBusMethodInfo *
g_dbus_interface_info_lookup_method (GDBusInterfaceInfo *info,
const gchar *name)
{
guint n;
GDBusMethodInfo *result;
G_LOCK (info_cache_lock);
if (G_LIKELY (info_cache != NULL))
{
InfoCacheEntry *cache;
cache = g_hash_table_lookup (info_cache, info);
if (G_LIKELY (cache != NULL))
{
result = g_hash_table_lookup (cache->method_name_to_data, name);
G_UNLOCK (info_cache_lock);
goto out;
}
}
G_UNLOCK (info_cache_lock);
for (n = 0; info->methods != NULL && info->methods[n] != NULL; n++)
{
GDBusMethodInfo *i = info->methods[n];
if (g_strcmp0 (i->name, name) == 0)
{
result = i;
goto out;
}
}
result = NULL;
out:
return result;
}
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_interface_info_lookup_signal:
* @info: A #GDBusInterfaceInfo.
* @name: A D-Bus signal name (typically in CamelCase)
*
* Looks up information about a signal.
*
* The cost of this function is O(n) in number of signals unless
* g_dbus_interface_info_cache_build() has been used on @info.
*
* Returns: (transfer none): A #GDBusSignalInfo or %NULL if not found. Do not free, it is owned by @info.
*
* Since: 2.26
*/
GDBusSignalInfo *
g_dbus_interface_info_lookup_signal (GDBusInterfaceInfo *info,
const gchar *name)
{
guint n;
GDBusSignalInfo *result;
G_LOCK (info_cache_lock);
if (G_LIKELY (info_cache != NULL))
{
InfoCacheEntry *cache;
cache = g_hash_table_lookup (info_cache, info);
if (G_LIKELY (cache != NULL))
{
result = g_hash_table_lookup (cache->signal_name_to_data, name);
G_UNLOCK (info_cache_lock);
goto out;
}
}
G_UNLOCK (info_cache_lock);
for (n = 0; info->signals != NULL && info->signals[n] != NULL; n++)
{
GDBusSignalInfo *i = info->signals[n];
if (g_strcmp0 (i->name, name) == 0)
{
result = i;
goto out;
}
}
result = NULL;
out:
return result;
}
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_interface_info_lookup_property:
* @info: A #GDBusInterfaceInfo.
* @name: A D-Bus property name (typically in CamelCase).
*
* Looks up information about a property.
*
* The cost of this function is O(n) in number of properties unless
* g_dbus_interface_info_cache_build() has been used on @info.
*
* Returns: (transfer none): A #GDBusPropertyInfo or %NULL if not found. Do not free, it is owned by @info.
*
* Since: 2.26
*/
GDBusPropertyInfo *
g_dbus_interface_info_lookup_property (GDBusInterfaceInfo *info,
const gchar *name)
{
guint n;
GDBusPropertyInfo *result;
G_LOCK (info_cache_lock);
if (G_LIKELY (info_cache != NULL))
{
InfoCacheEntry *cache;
cache = g_hash_table_lookup (info_cache, info);
if (G_LIKELY (cache != NULL))
{
result = g_hash_table_lookup (cache->property_name_to_data, name);
G_UNLOCK (info_cache_lock);
goto out;
}
}
G_UNLOCK (info_cache_lock);
for (n = 0; info->properties != NULL && info->properties[n] != NULL; n++)
{
GDBusPropertyInfo *i = info->properties[n];
if (g_strcmp0 (i->name, name) == 0)
{
result = i;
goto out;
}
}
result = NULL;
out:
return result;
}
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_interface_info_cache_build:
* @info: A #GDBusInterfaceInfo.
*
* Builds a lookup-cache to speed up
* g_dbus_interface_info_lookup_method(),
* g_dbus_interface_info_lookup_signal() and
* g_dbus_interface_info_lookup_property().
*
* If this has already been called with @info, the existing cache is
* used and its use count is increased.
*
* Note that @info cannot be modified until
* g_dbus_interface_info_cache_release() is called.
*
* Since: 2.30
*/
void
g_dbus_interface_info_cache_build (GDBusInterfaceInfo *info)
{
InfoCacheEntry *cache;
guint n;
G_LOCK (info_cache_lock);
if (info_cache == NULL)
info_cache = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, (GDestroyNotify) info_cache_free);
cache = g_hash_table_lookup (info_cache, info);
if (cache != NULL)
{
cache->use_count += 1;
goto out;
}
cache = g_slice_new0 (InfoCacheEntry);
cache->use_count = 1;
cache->method_name_to_data = g_hash_table_new (g_str_hash, g_str_equal);
cache->signal_name_to_data = g_hash_table_new (g_str_hash, g_str_equal);
cache->property_name_to_data = g_hash_table_new (g_str_hash, g_str_equal);
for (n = 0; info->methods != NULL && info->methods[n] != NULL; n++)
g_hash_table_insert (cache->method_name_to_data, info->methods[n]->name, info->methods[n]);
for (n = 0; info->signals != NULL && info->signals[n] != NULL; n++)
g_hash_table_insert (cache->signal_name_to_data, info->signals[n]->name, info->signals[n]);
for (n = 0; info->properties != NULL && info->properties[n] != NULL; n++)
g_hash_table_insert (cache->property_name_to_data, info->properties[n]->name, info->properties[n]);
g_hash_table_insert (info_cache, info, cache);
out:
G_UNLOCK (info_cache_lock);
}
/**
* g_dbus_interface_info_cache_release:
* @info: A GDBusInterfaceInfo
*
* Decrements the usage count for the cache for @info built by
* g_dbus_interface_info_cache_build() (if any) and frees the
* resources used by the cache if the usage count drops to zero.
*
* Since: 2.30
*/
void
g_dbus_interface_info_cache_release (GDBusInterfaceInfo *info)
{
InfoCacheEntry *cache;
G_LOCK (info_cache_lock);
if (G_UNLIKELY (info_cache == NULL))
{
g_warning ("%s called for interface %s but there is no cache", info->name, G_STRFUNC);
goto out;
}
cache = g_hash_table_lookup (info_cache, info);
if (G_UNLIKELY (cache == NULL))
{
g_warning ("%s called for interface %s but there is no cache entry", info->name, G_STRFUNC);
goto out;
}
cache->use_count -= 1;
if (cache->use_count == 0)
{
g_hash_table_remove (info_cache, info);
/* could nuke info_cache itself if empty */
}
out:
G_UNLOCK (info_cache_lock);
}
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_node_info_lookup_interface:
* @info: A #GDBusNodeInfo.
* @name: A D-Bus interface name.
*
* Looks up information about an interface.
*
* The cost of this function is O(n) in number of interfaces.
*
* Returns: (transfer none): A #GDBusInterfaceInfo or %NULL if not found. Do not free, it is owned by @info.
*
* Since: 2.26
*/
GDBusInterfaceInfo *
g_dbus_node_info_lookup_interface (GDBusNodeInfo *info,
const gchar *name)
{
guint n;
GDBusInterfaceInfo *result;
for (n = 0; info->interfaces != NULL && info->interfaces[n] != NULL; n++)
{
GDBusInterfaceInfo *i = info->interfaces[n];
if (g_strcmp0 (i->name, name) == 0)
{
result = i;
goto out;
}
}
result = NULL;
out:
return result;
}
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