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172 | -------------------------------------------------------------------------------
-- --
-- XPATH IN ADA Copyright (C) 2004, McKae Technologies --
-- Copyright (C) 2021-2024, Simon Wright <simon@pushface.org> --
-- --
-- XPath in Ada (XIA) is free software; you can redistribute it and/or --
-- modify it under terms of the GNU General Public License as published by --
-- the Free Software Foundation; either version 3, or (at your option) any --
-- later version. GNAT 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. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are --
-- granted additional permissions described in the GCC Runtime Library --
-- Exception, version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and a --
-- copy of the GCC Runtime Library Exception along with this program; see --
-- the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- XIA is maintained at https://github.com/simonjwright/xia --
-- --
-------------------------------------------------------------------------------
with Ada.Strings.Fixed;
with Ada.Strings.Maps;
with DOM.Core.Nodes;
with DOM.Readers;
with Input_Sources.File;
with Unicode.CES;
with GNATCOLL.Readline;
with XIA;
with Ada.Text_IO; use Ada.Text_IO;
procedure Test_Xpath is
use Ada.Strings.Fixed;
use Ada.Strings.Maps;
use DOM.Core;
use DOM;
use Input_Sources;
use XIA;
XML_Source_Reader : DOM.Readers.Tree_Reader;
Queried_Nodes : Node_List;
N : Node;
Child : Node;
Children : Node_List;
Children_Printed : Boolean := False;
File_Source : File.File_Input;
procedure Print_Text_Node (T : Text; Indent : Boolean := False) is
White_Space : constant String := ' ' & ASCII.LF & ASCII.CR & ASCII.HT;
White_Space_Set : constant Character_Set := To_Set (White_Space);
S : constant Unicode.CES.Byte_Sequence :=
Trim (Nodes.Node_Value (T), White_Space_Set, White_Space_Set);
begin
if S'Length > 0 then
if Indent then
Put (" ");
end if;
Put_Line (S);
end if;
end Print_Text_Node;
begin
GNATCOLL.Readline.Initialize (Appname => "test_xpath",
History_File => "test_xpath.history");
Get_Xml :
declare
Xml_File : constant String := GNATCOLL.Readline.Get_Line
(Prompt => "Enter XML file name: ");
begin
File.Open (Trim (Xml_File, Ada.Strings.Both), File_Source);
Readers.Parse (XML_Source_Reader, File_Source);
File.Close (File_Source);
Get_Commands :
loop
Get_Query :
declare
Query : constant String := GNATCOLL.Readline.Get_Line
(Prompt => "Enter XPath query: ");
begin
exit Get_Commands when Query'Length = 0;
if Query (1) /= '#' then
New_Line;
Put_Line ("Evaluating: " & Query);
New_Line;
Run_Query :
begin
Queried_Nodes :=
XPath_Query (Readers.Get_Tree (XML_Source_Reader), Query);
Put_Line
("Number of nodes:" &
Natural'Image (DOM.Core.Nodes.Length (Queried_Nodes)));
Print_Nodes :
for I in 0 .. Nodes.Length (Queried_Nodes) - 1 loop
N := DOM.Core.Nodes.Item (Queried_Nodes, I);
if N.Node_Type = Element_Node then
Put ("<");
Put (Nodes.Node_Name (N));
Put (">");
Children := Nodes.Child_Nodes (N);
Children_Printed := False;
for J in 0 .. Nodes.Length (Children) - 1 loop
Child := Nodes.Item (Children, J);
if Child.Node_Type = Element_Node then
if not Children_Printed then
New_Line;
Children_Printed := True;
end if;
Put (" <");
Put (Nodes.Node_Name (Child));
Put_Line (">");
elsif Child.Node_Type = Text_Node then
if not Children_Printed then
New_Line;
Children_Printed := True;
end if;
Print_Text_Node (Child, Indent => True);
end if;
end loop;
Put ("</");
Put (Nodes.Node_Name (N));
Put_Line (">");
elsif N.Node_Type = Attribute_Node then
Put (Nodes.Node_Name (N) & "=""");
Put (Nodes.Node_Value (N));
Put_Line ("""");
elsif N.Node_Type = Text_Node then
Print_Text_Node (N);
else
Put (Nodes.Node_Value (N));
end if;
end loop Print_Nodes;
exception
when Malformed_XPath =>
Put_Line ("Malformed query");
end Run_Query;
end if;
end Get_Query;
end loop Get_Commands;
end Get_Xml;
GNATCOLL.Readline.Finalize (History_File => "test_xpath.history");
exception
when others =>
GNATCOLL.Readline.Finalize (History_File => "test_xpath.history");
raise;
end Test_Xpath;
|