/usr/share/ada/adainclude/dbus-ada/d_bus-arguments-containers.adb is in libdbusada0.2-dev 0.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- D_Bus/Ada - An Ada binding to D-Bus
--
-- Copyright (C) 2011 Reto Buerki <reet@codelabs.ch>
--
-- This program is free software; you can redistribute it and/or
-- modify it under the terms of the GNU General Public License
-- as published by the Free Software Foundation; either version 2
-- of the License, or (at your option) any later version.
--
-- This program 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 General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
-- USA.
--
-- As a special exception, if other files instantiate generics from this
-- unit, or you link this unit with other files to produce an
-- executable this unit does not by itself cause the resulting
-- executable to be covered by the GNU General Public License. This
-- exception does not however invalidate any other reasons why the
-- executable file might be covered by the GNU Public License.
--
with Ada.Strings.Unbounded;
with Interfaces.C.Strings;
with dbus_types_h;
package body D_Bus.Arguments.Containers is
package C renames Interfaces.C;
procedure Serialize_Container
(Args : Argument_List_Type;
Code : ASCII_Code;
Signature : String := "";
D_Args : not null access dbus_message_h.DBusMessageIter);
-- Serialization helper for container types. Code is the container code,
-- Signature is the required signature as described in the D-Bus low-level
-- public API, function dbus_message_iter_open_container.
-------------------------------------------------------------------------
function "&"
(Left : Argument_List_Type;
Right : Array_Type)
return Argument_List_Type
is
Arg_List : Argument_List_Type;
begin
Arg_List := Left;
Arg_List.Data.Append (New_Item => Right);
return Arg_List;
end "&";
-------------------------------------------------------------------------
function "&"
(Left : Argument_List_Type;
Right : Struct_Type)
return Argument_List_Type
is
Arg_List : Argument_List_Type;
begin
Arg_List := Left;
Arg_List.Data.Append (New_Item => Right);
return Arg_List;
end "&";
-------------------------------------------------------------------------
function "&"
(Left : Argument_List_Type;
Right : Variant_Type)
return Argument_List_Type
is
Arg_List : Argument_List_Type;
begin
Arg_List := Left;
Arg_List.Data.Append (New_Item => Right);
return Arg_List;
end "&";
-------------------------------------------------------------------------
function "+" (Left : Array_Type) return Argument_List_Type
is
Arg_List : Argument_List_Type;
begin
return "&"
(Left => Arg_List,
Right => Left);
end "+";
-------------------------------------------------------------------------
function "+" (Left : Struct_Type) return Argument_List_Type
is
Arg_List : Argument_List_Type;
begin
return "&"
(Left => Arg_List,
Right => Left);
end "+";
-------------------------------------------------------------------------
function "+" (Left : Variant_Type) return Argument_List_Type
is
Arg_List : Argument_List_Type;
begin
return "&"
(Left => Arg_List,
Right => Left);
end "+";
-------------------------------------------------------------------------
procedure Append
(List : in out Array_Type;
New_Item : Argument_Type'Class)
is
Arg_Code : constant Natural := New_Item.Get_Code;
begin
if List.Code /= 0 and then Arg_Code /= List.Code then
raise D_Bus_Error with "Array can only hold one single complete type";
end if;
List.Code := Arg_Code;
Argument_List_Type (List).Append (New_Item => New_Item);
end Append;
-------------------------------------------------------------------------
function Create
(Key : Basic_Type'Class;
Value : Argument_Type'Class)
return Dict_Entry_Type
is
D : Dict_Entry_Type;
begin
D.Append (New_Item => Key);
D.Append (New_Item => Value);
return D;
end Create;
-------------------------------------------------------------------------
function Create (Source : Argument_Type'Class) return Variant_Type
is
V : Variant_Type;
begin
V.Append (New_Item => Source);
return V;
end Create;
-------------------------------------------------------------------------
function Deserialize
(D_Args : not null access dbus_message_h.DBusMessageIter)
return Array_Type
is
D_Sub_Args : aliased dbus_message_h.DBusMessageIter;
begin
dbus_message_h.dbus_message_iter_recurse
(arg1 => D_Args,
arg2 => D_Sub_Args'Access);
return Result : Array_Type do
Argument_List_Type (Result)
:= Deserialize (D_Args => D_Sub_Args'Access);
end return;
end Deserialize;
-------------------------------------------------------------------------
function Deserialize
(D_Args : not null access dbus_message_h.DBusMessageIter)
return Struct_Type
is
D_Sub_Args : aliased dbus_message_h.DBusMessageIter;
begin
dbus_message_h.dbus_message_iter_recurse
(arg1 => D_Args,
arg2 => D_Sub_Args'Access);
return Result : Struct_Type do
Argument_List_Type (Result)
:= Deserialize (D_Args => D_Sub_Args'Access);
end return;
end Deserialize;
-------------------------------------------------------------------------
function Deserialize
(D_Args : not null access dbus_message_h.DBusMessageIter)
return Dict_Entry_Type
is
D_Sub_Args : aliased dbus_message_h.DBusMessageIter;
begin
dbus_message_h.dbus_message_iter_recurse
(arg1 => D_Args,
arg2 => D_Sub_Args'Access);
return Result : Dict_Entry_Type do
Argument_List_Type (Result)
:= Deserialize (D_Args => D_Sub_Args'Access);
end return;
end Deserialize;
-------------------------------------------------------------------------
function Deserialize
(D_Args : not null access dbus_message_h.DBusMessageIter)
return Variant_Type
is
D_Sub_Args : aliased dbus_message_h.DBusMessageIter;
begin
dbus_message_h.dbus_message_iter_recurse
(arg1 => D_Args,
arg2 => D_Sub_Args'Access);
return Result : Variant_Type do
Argument_List_Type (Result)
:= Deserialize (D_Args => D_Sub_Args'Access);
end return;
end Deserialize;
-------------------------------------------------------------------------
function Get_Argument (Item : Variant_Type) return Argument_Type'Class
is
begin
return Item.First_Element;
end Get_Argument;
-------------------------------------------------------------------------
function Get_Key (Item : Dict_Entry_Type) return Basic_Type'Class
is
begin
return Basic_Type'Class (Item.First_Element);
end Get_Key;
-------------------------------------------------------------------------
function Get_Signature (Arg : Array_Type) return String
is
begin
return Get_Tag (Arg => Argument_Type'Class (Arg))
& Arg.First_Element.Get_Signature;
end Get_Signature;
-------------------------------------------------------------------------
function Get_Signature (Arg : Struct_Type) return String
is
use Ada.Strings.Unbounded;
Result : Unbounded_String;
procedure Append_Sig (Arg : Argument_Type'Class);
-- Append argument's signature to struct signature.
procedure Append_Sig (Arg : Argument_Type'Class)
is
begin
Result := Result & Arg.Get_Signature;
end Append_Sig;
begin
Result := Result & "(";
Arg.Iterate (Process => Append_Sig'Access);
Result := Result & ")";
return To_String (Result);
end Get_Signature;
-------------------------------------------------------------------------
function Get_Signature (Arg : Dict_Entry_Type) return String
is
begin
return "{" & Arg.First_Element.Get_Signature
& Arg.Last_Element.Get_Signature & "}";
end Get_Signature;
-------------------------------------------------------------------------
function Get_Signature (Arg : Variant_Type) return String
is
pragma Unreferenced (Arg);
begin
return "v";
end Get_Signature;
-------------------------------------------------------------------------
function Get_Value (Item : Dict_Entry_Type) return Argument_Type'Class
is
begin
return Item.Last_Element;
end Get_Value;
-------------------------------------------------------------------------
procedure Serialize
(Args : Array_Type;
D_Args : not null access dbus_message_h.DBusMessageIter)
is
begin
if Args.Is_Empty then
raise D_Bus_Error with "Serialization error: Array is empty";
end if;
Serialize_Container (Args => Argument_List_Type (Args),
Code => a,
Signature => Args.First_Element.Get_Signature,
D_Args => D_Args);
end Serialize;
-------------------------------------------------------------------------
procedure Serialize
(Args : Struct_Type;
D_Args : not null access dbus_message_h.DBusMessageIter)
is
begin
if Args.Is_Empty then
raise D_Bus_Error with "Serialization error: Struct is empty";
end if;
Serialize_Container (Args => Argument_List_Type (Args),
Code => r,
Signature => "",
D_Args => D_Args);
end Serialize;
-------------------------------------------------------------------------
procedure Serialize
(Args : Dict_Entry_Type;
D_Args : not null access dbus_message_h.DBusMessageIter)
is
begin
if Args.Get_Count /= 2 then
raise D_Bus_Error with
"Serialization error: dict entry needs exactly two elements";
end if;
Serialize_Container (Args => Argument_List_Type (Args),
Code => e,
Signature => "",
D_Args => D_Args);
end Serialize;
-------------------------------------------------------------------------
procedure Serialize
(Args : Variant_Type;
D_Args : not null access dbus_message_h.DBusMessageIter)
is
begin
if Args.Get_Count /= 1 then
raise D_Bus_Error with
"Serialization error: variant contains no argument";
end if;
Serialize_Container (Args => Argument_List_Type (Args),
Code => v,
Signature => Args.First_Element.Get_Signature,
D_Args => D_Args);
end Serialize;
-------------------------------------------------------------------------
procedure Serialize_Container
(Args : Argument_List_Type;
Code : ASCII_Code;
Signature : String := "";
D_Args : not null access dbus_message_h.DBusMessageIter)
is
use type dbus_types_h.dbus_bool_t;
use type C.Strings.chars_ptr;
C_Sig : C.Strings.chars_ptr := C.Strings.Null_Ptr;
D_Sub_Args : aliased dbus_message_h.DBusMessageIter;
D_Res : dbus_types_h.dbus_bool_t;
begin
if Signature'Length /= 0 then
C_Sig := C.Strings.New_String (Str => Signature);
end if;
D_Res := dbus_message_h.dbus_message_iter_open_container
(arg1 => D_Args,
arg2 => C.int (Code_Table (Code)),
arg3 => C_Sig,
arg4 => D_Sub_Args'Access);
if C_Sig /= C.Strings.Null_Ptr then
C.Strings.Free (Item => C_Sig);
end if;
if D_Res = 0 then
raise D_Bus_Error with "Unable to create D-Bus container";
end if;
Args.Serialize (D_Args => D_Sub_Args'Access);
D_Res := dbus_message_h.dbus_message_iter_close_container
(arg1 => D_Args,
arg2 => D_Sub_Args'Access);
if D_Res = 0 then
raise D_Bus_Error with "Unable to close D-Bus container";
end if;
end Serialize_Container;
-------------------------------------------------------------------------
function To_String (Arg : Array_Type) return String
is
use Ada.Strings.Unbounded;
Result : Unbounded_String;
procedure Append_String (Arg : Argument_Type'Class);
-- Append argument's string representation to result string
procedure Append_String (Arg : Argument_Type'Class)
is
begin
Result := Result & " " & Arg.To_String;
end Append_String;
begin
Result := Result & "[";
Arg.Iterate (Process => Append_String'Access);
Result := Result & " ]";
return To_String (Result);
end To_String;
-------------------------------------------------------------------------
function To_String (Arg : Struct_Type) return String
is
use Ada.Strings.Unbounded;
Result : Unbounded_String;
procedure Append_String (Arg : Argument_Type'Class);
-- Append argument's string representation to result string
procedure Append_String (Arg : Argument_Type'Class)
is
begin
Result := Result & " " & Arg.To_String;
end Append_String;
begin
Result := Result & "(";
Arg.Iterate (Process => Append_String'Access);
Result := Result & " )";
return To_String (Result);
end To_String;
-------------------------------------------------------------------------
function To_String (Arg : Dict_Entry_Type) return String
is
begin
return "{ key:" & Arg.First_Element.To_String
& ", value:" & Arg.Last_Element.To_String & " }";
end To_String;
-------------------------------------------------------------------------
function To_String (Arg : Variant_Type) return String
is
Contained : Argument_Type'Class := Arg.Get_Argument;
begin
return Contained.Get_Tag & ", " & Contained.To_String;
end To_String;
end D_Bus.Arguments.Containers;
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