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1124 | ------------------------------------------------------------------------------
-- --
-- Matreshka Project --
-- --
-- XML Processor --
-- --
-- Runtime Library Component --
-- --
------------------------------------------------------------------------------
-- --
-- Copyright © 2011-2012, Vadim Godunko <vgodunko@gmail.com> --
-- All rights reserved. --
-- --
-- Redistribution and use in source and binary forms, with or without --
-- modification, are permitted provided that the following conditions --
-- are met: --
-- --
-- * Redistributions of source code must retain the above copyright --
-- notice, this list of conditions and the following disclaimer. --
-- --
-- * Redistributions in binary form must reproduce the above copyright --
-- notice, this list of conditions and the following disclaimer in the --
-- documentation and/or other materials provided with the distribution. --
-- --
-- * Neither the name of the Vadim Godunko, IE nor the names of its --
-- contributors may be used to endorse or promote products derived from --
-- this software without specific prior written permission. --
-- --
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS --
-- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT --
-- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR --
-- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT --
-- HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, --
-- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED --
-- TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR --
-- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF --
-- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING --
-- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS --
-- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. --
-- --
------------------------------------------------------------------------------
-- $Revision: 3157 $ $Date: 2012-10-08 21:07:31 +0400 (Пн, 08 окт 2012) $
------------------------------------------------------------------------------
with Ada.Wide_Wide_Text_IO;
with League.IRIs;
with Matreshka.XML_Catalogs.Normalization;
package body Matreshka.XML_Catalogs.Handlers is
use Matreshka.XML_Catalogs.Entry_Files;
use type League.Strings.Universal_String;
XML_Catalogs_Namespace : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String
("urn:oasis:names:tc:entity:xmlns:xml:catalog");
XML_Catalogs_1_0_Public_Id : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String
("-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN");
XML_Catalogs_1_1_Public_Id : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String
("-//OASIS//DTD XML Catalogs V1.1//EN");
-- Tags names
Catalog_Tag_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("catalog");
Delegate_Public_Tag_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("delegatePublic");
Delegate_System_Tag_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("delegateSystem");
Delegate_URI_Tag_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("delegateURI");
Group_Tag_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("group");
Next_Catalog_Tag_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("nextCatalog");
Public_Tag_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("public");
Rewrite_System_Tag_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("rewriteSystem");
Rewrite_URI_Tag_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("rewriteURI");
System_Tag_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("system");
System_Suffix_Tag_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("systemSuffix");
URI_Tag_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("uri");
URI_Suffix_Tag_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("uriSuffix");
-- Attributes names
Catalog_Attribute_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("catalog");
Name_Attribute_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("name");
Prefer_Attribute_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("prefer");
Public_Id_Attribute_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("publicId");
Public_Id_Start_String_Attribute_Name :
constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("publicIdStartString");
Rewrite_Prefix_Attribute_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("rewritePrefix");
System_Id_Attribute_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("systemId");
System_Id_Start_String_Attribute_Name :
constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("systemIdStartString");
System_Id_Suffix_Attribute_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("systemIdSuffix");
URI_Attribute_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("uri");
URI_Start_String_Attribute_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("uriStartString");
URI_Suffix_Attribute_Name : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("uriSuffix");
-- Attribute values images
System_Image : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("system");
Public_Image : constant League.Strings.Universal_String
:= League.Strings.To_Universal_String ("public");
procedure Error
(Self : in out XML_Catalog_Handler'Class;
Message : League.Strings.Universal_String;
Success : out Boolean);
-- Sets Success to False and save Message as last error message.
procedure Error
(Self : in out XML_Catalog_Handler'Class;
Message : Wide_Wide_String;
Success : out Boolean);
-- Sets Success to False and save Message as last error message.
procedure Check_No_Fragment_Identifier
(Self : in out XML_Catalog_Handler'Class;
URI : League.Strings.Universal_String;
Success : in out Boolean);
-- Check that URI is not include fragment identifier.
procedure Process_Catalog_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean);
-- Processes start of "catalog" element.
procedure Process_Group_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean);
-- Processes start of "group" element.
procedure Process_Group_End_Element
(Self : in out XML_Catalog_Handler'Class;
Success : in out Boolean);
-- Processes end of "group" element.
procedure Process_Public_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean);
-- Processes start of "public" element.
procedure Process_System_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean);
-- Processes start of "system" element.
procedure Process_Rewrite_System_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean);
-- Processes start of "rewriteSystem" element.
procedure Process_System_Suffix_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean);
-- Processes start of "systemSuffix" element.
procedure Process_Delegate_Public_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean);
-- Processes start of "delegatePublic" element.
procedure Process_Delegate_System_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean);
-- Processes start of "delegateSystem" element.
procedure Process_URI_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean);
-- Processes start of "uri" element.
procedure Process_Rewrite_URI_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean);
-- Processes start of "rewriteURI" element.
procedure Process_URI_Suffix_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean);
-- Processes start of "uriSuffix" element.
procedure Process_Delegate_URI_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean);
-- Processes start of "delegateURI" element.
procedure Process_Next_Catalog_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean);
-- Processes start of "nextCatalog" element.
----------------------------------
-- Check_No_Fragment_Identifier --
----------------------------------
procedure Check_No_Fragment_Identifier
(Self : in out XML_Catalog_Handler'Class;
URI : League.Strings.Universal_String;
Success : in out Boolean) is
begin
if URI.Index ('#') /= 0 then
Error
(Self,
"URI reference should not include a fragment identifier",
Success);
end if;
end Check_No_Fragment_Identifier;
-----------------
-- End_Element --
-----------------
overriding procedure End_Element
(Self : in out XML_Catalog_Handler;
Namespace_URI : League.Strings.Universal_String;
Local_Name : League.Strings.Universal_String;
Qualified_Name : League.Strings.Universal_String;
Success : in out Boolean) is
begin
if Namespace_URI = XML_Catalogs_Namespace
and Local_Name = Group_Tag_Name
then
Process_Group_End_Element (Self, Success);
end if;
end End_Element;
-----------
-- Error --
-----------
procedure Error
(Self : in out XML_Catalog_Handler'Class;
Message : Wide_Wide_String;
Success : out Boolean) is
begin
Self.Diagnosis := League.Strings.To_Universal_String (Message);
Success := False;
end Error;
-----------
-- Error --
-----------
procedure Error
(Self : in out XML_Catalog_Handler'Class;
Message : League.Strings.Universal_String;
Success : out Boolean) is
begin
Self.Diagnosis := Message;
Success := False;
end Error;
-----------
-- Error --
-----------
overriding procedure Error
(Self : in out XML_Catalog_Handler;
Occurrence : XML.SAX.Parse_Exceptions.SAX_Parse_Exception;
Success : in out Boolean) is
begin
Ada.Wide_Wide_Text_IO.Put_Line
(Ada.Wide_Wide_Text_IO.Standard_Error,
"(error) " & Occurrence.Message.To_Wide_Wide_String);
end Error;
------------------
-- Error_String --
------------------
overriding function Error_String
(Self : XML_Catalog_Handler) return League.Strings.Universal_String is
begin
return Self.Diagnosis;
end Error_String;
-----------------
-- Fatal_Error --
-----------------
overriding procedure Fatal_Error
(Self : in out XML_Catalog_Handler;
Occurrence : XML.SAX.Parse_Exceptions.SAX_Parse_Exception) is
begin
Ada.Wide_Wide_Text_IO.Put_Line
(Ada.Wide_Wide_Text_IO.Standard_Error,
"(fatal) " & Occurrence.Message.To_Wide_Wide_String);
end Fatal_Error;
----------------------------
-- Get_Catalog_Entry_File --
----------------------------
function Get_Catalog_Entry_File
(Self : XML_Catalog_Handler)
return Matreshka.XML_Catalogs.Entry_Files.Catalog_Entry_File_Access is
begin
return Self.Entry_File;
end Get_Catalog_Entry_File;
-----------------------------------
-- Process_Catalog_Start_Element --
-----------------------------------
procedure Process_Catalog_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean)
is
-- [XML Catalogs] 6.5.1. The catalog Entry
--
-- "Each XML Catalog entry file consists of a single catalog element.
-- This element may set the global prefer value and global base URI. It
-- is otherwise just a container for the other elements.
--
-- <catalog
-- id = id
-- prefer = "system" | "public"
-- xml:base = uri-reference >
-- <!-- Content: (group | public | system | rewriteSystem
-- | systemSuffix | delegatePublic | delegateSystem | uri
-- | rewriteURI | uriSuffix | delegateURI | nextCatalog)+ -->
-- </catalog>"
Prefer_Index : constant Natural
:= Attributes.Index (Prefer_Attribute_Name);
begin
-- Analyze 'prefer' attribute when present.
if Prefer_Index /= 0 then
if Attributes.Value (Prefer_Index) = Public_Image then
Self.Current_Prefer_Mode := Public;
elsif Attributes.Value (Prefer_Index) = System_Image then
Self.Current_Prefer_Mode := System;
else
Self.Error ("Invalid value of 'prefer' attribute", Success);
end if;
end if;
-- Create new catalog entry file object.
Self.Entry_File :=
new Matreshka.XML_Catalogs.Entry_Files.Catalog_Entry_File;
Self.Entry_File.Default_Prefer_Mode := Self.Default_Prefer_Mode;
end Process_Catalog_Start_Element;
-------------------------------------------
-- Process_Delegate_Public_Start_Element --
-------------------------------------------
procedure Process_Delegate_Public_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean)
is
-- [XML Catalogs] 6.5.7. The delegatePublic Element
--
-- "The delegatePublic element associates an alternate catalog with a
-- partial public identifier.
--
-- <delegatePublic
-- id = id
-- publicIdStartString = public-identifier-prefix
-- catalog = uri-reference
-- xml:base = uri-reference />
--
-- A delegatePublic entry matches a public identifier if the normalized
-- value (Section 6.2, “Public Identifier Normalization”) of the public
-- identifier begins precisely with the normalized value of the
-- publicIdStartString attribute of the entry."
--
-- "If the value of the catalog attribute is relative, it must be made
-- absolute with respect to the base URI currently in effect."
Public_Id : constant League.Strings.Universal_String
:= Matreshka.XML_Catalogs.Normalization.Normalize_Public_Identifier
(Attributes.Value (Public_Id_Start_String_Attribute_Name));
Catalog : constant League.Strings.Universal_String
:= Self.Locator.Base_URI.Resolve
(League.IRIs.From_Universal_String
(Attributes.Value (Catalog_Attribute_Name))).To_Universal_String;
begin
-- Check that 'publicIdStartString' is not empty.
if Public_Id.Is_Empty then
Error (Self, "publicIdStartString is empty", Success);
return;
end if;
Self.Entry_File.Append
(new Delegate_Public_Entry'
(Public_Id, Catalog, Self.Current_Prefer_Mode));
end Process_Delegate_Public_Start_Element;
-------------------------------------------
-- Process_Delegate_System_Start_Element --
-------------------------------------------
procedure Process_Delegate_System_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean)
is
-- [XML Catalogs] 6.5.8. The delegateSystem Element
--
-- "The delegateSystem element associates an alternate catalog with a
-- partial system identifier.
--
-- <delegateSystem
-- id = id
-- systemIdStartString = string
-- catalog = uri-reference
-- xml:base = uri-reference />
--
-- A delegateSystem entry matches a system identifier if the normalized
-- value (Section 6.3, “System Identifier and URI Normalization”) of the
-- system identifier begins precisely with the normalized value of the
-- systemIdStartString attribute of the entry."
--
-- "If the value of the catalog attribute is relative, it must be made
-- absolute with respect to the base URI currently in effect."
System_Id : constant League.Strings.Universal_String
:= Matreshka.XML_Catalogs.Normalization.Normalize_System_Identifier
(Attributes.Value (System_Id_Start_String_Attribute_Name));
Catalog : constant League.Strings.Universal_String
:= Self.Locator.Base_URI.Resolve
(League.IRIs.From_Universal_String
(Attributes.Value (Catalog_Attribute_Name))).To_Universal_String;
begin
-- Check that 'systemIdStartString' is not empty.
if System_Id.Is_Empty then
Error (Self, "systemIdStartString is empty", Success);
return;
end if;
Self.Entry_File.Append
(new Delegate_System_Entry'(System_Id, Catalog));
end Process_Delegate_System_Start_Element;
----------------------------------------
-- Process_Delegate_URI_Start_Element --
----------------------------------------
procedure Process_Delegate_URI_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean)
is
-- [XML Catalogs] 6.5.12. The delegateURI Element
--
-- "The delegateURI element associates an alternate catalog with a
-- partial URI reference.
--
-- <delegateURI
-- id = id
-- uriStartString = string
-- catalog = uri-reference
-- xml:base = uri-reference />
--
-- A delegateURI entry matches a URI reference if the normalized value
-- (Section 6.3, “System Identifier and URI Normalization”) of the URI
-- reference begins precisely with the normalized value of the
-- uriStartString attribute of the entry.
--
-- If the value of the catalog attribute is relative, it must be made
-- absolute with respect to the base URI currently in effect."
URI : constant League.Strings.Universal_String
:= Matreshka.XML_Catalogs.Normalization.Normalize_URI
(Attributes.Value (URI_Start_String_Attribute_Name));
Catalog : constant League.Strings.Universal_String
:= Self.Locator.Base_URI.Resolve
(League.IRIs.From_Universal_String
(Attributes.Value (Catalog_Attribute_Name))).To_Universal_String;
begin
-- Check that 'uriStartString' is not empty.
if URI.Is_Empty then
Error (Self, "uriStartString is empty", Success);
return;
end if;
Self.Entry_File.Append (new Delegate_URI_Entry'(URI, Catalog));
end Process_Delegate_URI_Start_Element;
-------------------------------
-- Process_Group_End_Element --
-------------------------------
procedure Process_Group_End_Element
(Self : in out XML_Catalog_Handler'Class;
Success : in out Boolean) is
begin
-- Restore preference mode on leave of "group" element.
Self.Current_Prefer_Mode := Self.Previous_Prefer_Mode;
end Process_Group_End_Element;
---------------------------------
-- Process_Group_Start_Element --
---------------------------------
procedure Process_Group_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean)
is
-- [XML Catalogs] 6.5.2. The group Entry
--
-- "The group element is a convenience wrapper for specifying a prefer
-- setting or base URI for a set of catalog entries. It has no
-- semantics other than scoping these settings.
--
-- <group
-- id = id
-- prefer = "system" | "public"
-- xml:base = uri-reference >
-- <!-- Content: (public | system | rewriteSystem | systemSuffix |
-- delegatePublic | delegateSystem | uri | rewriteURI | uriSuffix |
-- delegateURI | nextCatalog)+ -->
-- </group>"
Prefer_Index : constant Natural
:= Attributes.Index (Prefer_Attribute_Name);
begin
-- Save current preference mode, analyze 'prefer' attribute when
-- present, otherwise preserve current mode.
Self.Previous_Prefer_Mode := Self.Current_Prefer_Mode;
if Prefer_Index /= 0 then
if Attributes.Value (Prefer_Index) = Public_Image then
Self.Current_Prefer_Mode := Public;
elsif Attributes.Value (Prefer_Index) = System_Image then
Self.Current_Prefer_Mode := System;
else
Self.Error ("Invalid value of 'prefer' attribute", Success);
end if;
end if;
end Process_Group_Start_Element;
----------------------------------------
-- Process_Next_Catalog_Start_Element --
----------------------------------------
procedure Process_Next_Catalog_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean)
is
-- [XML Catalogs] 6.5.13. The nextCatalog Element
--
-- "The nextCatalog elements indicate additional catalog entry file(s)
-- to be considered during the process of resolution.
--
-- <nextCatalog
-- id = id
-- catalog = uri-reference
-- xml:base = uri-reference />
--
-- If the value of the catalog attribute is relative, it must be made
-- absolute with respect to the base URI currently in effect.
--
-- Catalogs loaded due to a nextCatalog directive have an initial base
-- URI that is dependent on the location of the loaded catalog entry
-- file. No xml:base information is inherited from the originating
-- catalog.
Catalog : constant League.Strings.Universal_String
:= Self.Locator.Base_URI.Resolve
(League.IRIs.From_Universal_String
(Attributes.Value (Catalog_Attribute_Name))).To_Universal_String;
begin
Self.Entry_File.Append
(new Next_Catalog_Entry'(Catalog, Self.Default_Prefer_Mode, null));
end Process_Next_Catalog_Start_Element;
----------------------------------
-- Process_Public_Start_Element --
----------------------------------
procedure Process_Public_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean)
is
-- [XML Catalogs] 6.5.3. The public Entry
--
-- "The public element associates a URI reference with the public
-- identifier portion of an external identifier.
--
-- <public
-- id = id
-- publicId = public-identifier
-- uri = uri-reference
-- xml:base = uri-reference />
--
-- A public entry matches a public identifier if the normalized value
-- (Section 6.2, “Public Identifier Normalization”) of the public
-- identifier is lexically identical to the normalized value of the
-- publicId attribute of the entry.
--
-- If the value of the uri attribute is relative, it must be made
-- absolute with respect to the base URI currently in effect. The URI
-- reference should not include a fragment identifier."
Public_Id : constant League.Strings.Universal_String
:= Matreshka.XML_Catalogs.Normalization.Normalize_Public_Identifier
(Attributes.Value (Public_Id_Attribute_Name));
URI : constant League.Strings.Universal_String
:= Self.Locator.Base_URI.Resolve
(League.IRIs.From_Universal_String
(Attributes.Value (URI_Attribute_Name))).To_Universal_String;
begin
-- Check that 'publicId' is not empty.
if Public_Id.Is_Empty then
Error (Self, "publicId is empty", Success);
return;
end if;
-- Check that URI is not include a fragment identifier.
Check_No_Fragment_Identifier (Self, URI, Success);
if not Success then
return;
end if;
Self.Entry_File.Append
(new Public_Entry'(Public_Id, URI, Self.Current_Prefer_Mode));
end Process_Public_Start_Element;
------------------------------------------
-- Process_Rewrite_System_Start_Element --
------------------------------------------
procedure Process_Rewrite_System_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean)
is
-- [XML Catalogs] 6.5.5. The rewriteSystem Element
--
-- The rewriteSystem element rewrites the beginning of a system
-- identifier.
--
-- <rewriteSystem
-- id = id
-- systemIdStartString = string
-- rewritePrefix = uri-reference />
--
-- A rewriteSystem entry matches a system identifier if the normalized
-- value (Section 6.3, “System Identifier and URI Normalization”) of the
-- system identifier begins precisely with the normalized value of the
-- systemIdStartString attribute of the entry.
--
-- If the value of the rewritePrefix attribute is relative, it must be
-- made absolute with respect to the base URI currently in effect.
System_Id_Start_String : constant League.Strings.Universal_String
:= Matreshka.XML_Catalogs.Normalization.Normalize_System_Identifier
(Attributes.Value (System_Id_Start_String_Attribute_Name));
Rewrite_Prefix : constant League.Strings.Universal_String
:= Self.Locator.Base_URI.Resolve
(League.IRIs.From_Universal_String
(Attributes.Value
(Rewrite_Prefix_Attribute_Name))).To_Universal_String;
begin
-- Check that 'systemIdStartString' is not empty.
if System_Id_Start_String.Is_Empty then
Error (Self, "'systemIdStartString' is empty", Success);
return;
end if;
Self.Entry_File.Append
(new Rewrite_System_Entry'(System_Id_Start_String, Rewrite_Prefix));
end Process_Rewrite_System_Start_Element;
---------------------------------------
-- Process_Rewrite_URI_Start_Element --
---------------------------------------
procedure Process_Rewrite_URI_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean)
is
-- [XML Catalogs] 6.5.10. The rewriteURI Element
--
-- The rewriteURI element rewrites the beginning of a URI reference that
-- is not part of an external identifier.
--
-- <rewriteURI
-- id = id
-- uriStartString = string
-- rewritePrefix = uri-reference />
--
-- A rewriteURI entry matches a URI reference if the normalized value
-- (Section 6.3, “System Identifier and URI Normalization”) of the URI
-- reference begins precisely with the normalized value of the
-- uriStartString attribute of the entry.
--
-- If the value of the rewritePrefix attribute is relative, it must be
-- made absolute with respect to the base URI currently in effect.
URI_Start_String : constant League.Strings.Universal_String
:= Matreshka.XML_Catalogs.Normalization.Normalize_URI
(Attributes.Value (URI_Start_String_Attribute_Name));
Rewrite_Prefix : constant League.Strings.Universal_String
:= Self.Locator.Base_URI.Resolve
(League.IRIs.From_Universal_String
(Attributes.Value
(Rewrite_Prefix_Attribute_Name))).To_Universal_String;
begin
-- Check that 'uriStartString' is not empty.
if URI_Start_String.Is_Empty then
Error (Self, "'uriStartString' is empty", Success);
return;
end if;
Self.Entry_File.Append
(new Rewrite_URI_Entry'(URI_Start_String, Rewrite_Prefix));
end Process_Rewrite_URI_Start_Element;
----------------------------------
-- Process_System_Start_Element --
----------------------------------
procedure Process_System_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean)
is
-- [XML Catalogs] 6.5.4. The system Element
--
-- "The system element associates a URI reference with the system
-- identifier portion of an external identifier.
--
-- <system
-- id = id
-- systemId = string
-- uri = uri-reference
-- xml:base = uri-reference />
--
-- A system entry matches a system identifier if the normalized value
-- (Section 6.3, “System Identifier and URI Normalization”) of the
-- system identifier is lexically identical to the normalized value of
-- the systemId attribute of the entry.
--
-- If the value of the uri attribute is relative, it must be made
-- absolute with respect to the base URI currently in effect. The URI
-- reference should not include a fragment identifier."
System_Id : constant League.Strings.Universal_String
:= Matreshka.XML_Catalogs.Normalization.Normalize_System_Identifier
(Attributes.Value (System_Id_Attribute_Name));
URI : constant League.Strings.Universal_String
:= Self.Locator.Base_URI.Resolve
(League.IRIs.From_Universal_String
(Attributes.Value (URI_Attribute_Name))).To_Universal_String;
begin
-- Check that 'systemId' is not empty.
if System_Id.Is_Empty then
Error (Self, "systemId is empty", Success);
return;
end if;
-- Check that URI is not include a fragment identifier.
Check_No_Fragment_Identifier (Self, URI, Success);
if not Success then
return;
end if;
Self.Entry_File.Append (new System_Entry'(System_Id, URI));
end Process_System_Start_Element;
-----------------------------------------
-- Process_System_Suffix_Start_Element --
-----------------------------------------
procedure Process_System_Suffix_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean)
is
-- [XML Catalogs] 6.5.6. The systemSuffix Element
--
-- "The systemSuffix element associates a URI reference with the suffix
-- portion of a system identifier.
--
-- <systemSuffix
-- id = id
-- systemIdSuffix = string
-- uri = uri-reference
-- xml:base = uri-reference />
--
-- A systemSuffix entry matches a system identifier if the normalized
-- value (Section 6.3, “System Identifier and URI Normalization”) of the
-- system identifier ends precisely with the normalized value of the
-- systemIdSuffix attribute of the entry.
--
-- If the value of the uri attribute is relative, it must be made
-- absolute with respect to the base URI currently in effect. The URI
-- reference should not include a fragment identifier."
System_Id_Suffix : constant League.Strings.Universal_String
:= Matreshka.XML_Catalogs.Normalization.Normalize_System_Identifier
(Attributes.Value (System_Id_Suffix_Attribute_Name));
URI : constant League.Strings.Universal_String
:= Self.Locator.Base_URI.Resolve
(League.IRIs.From_Universal_String
(Attributes.Value (URI_Attribute_Name))).To_Universal_String;
begin
-- Check that 'systemIdSuffix' is not empty.
if System_Id_Suffix.Is_Empty then
Error (Self, "systemIdSuffix is empty", Success);
return;
end if;
-- Check that URI is not include a fragment identifier.
Check_No_Fragment_Identifier (Self, URI, Success);
if not Success then
return;
end if;
Self.Entry_File.Append (new System_Suffix_Entry'(System_Id_Suffix, URI));
end Process_System_Suffix_Start_Element;
-------------------------------
-- Process_URI_Start_Element --
-------------------------------
procedure Process_URI_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean)
is
-- [XML Catalogs] 6.5.9. The uri Element
--
-- The uri element associates an alternate URI reference with a URI
-- reference that is not part of an external identifier.
--
-- <uri
-- id = id
-- name = string
-- uri = uri-reference
-- xml:base = uri-reference />
--
-- A uri entry matches a URI reference if the normalized value (Section
-- 6.3, “System Identifier and URI Normalization”) of the URI reference
-- is lexically identical to the normalized value of the name attribute
-- of the entry."
--
-- "If the value of the uri attribute is relative, it must be made
-- absolute with respect to the base URI currently in effect."
Name : constant League.Strings.Universal_String
:= Matreshka.XML_Catalogs.Normalization.Normalize_URI
(Attributes.Value (Name_Attribute_Name));
URI : constant League.Strings.Universal_String
:= Self.Locator.Base_URI.Resolve
(League.IRIs.From_Universal_String
(Attributes.Value (URI_Attribute_Name))).To_Universal_String;
begin
-- Check that 'name' is not empty.
if Name.Is_Empty then
Error (Self, "name is empty", Success);
return;
end if;
Self.Entry_File.Append (new URI_Entry'(Name, URI));
end Process_URI_Start_Element;
--------------------------------------
-- Process_URI_Suffix_Start_Element --
--------------------------------------
procedure Process_URI_Suffix_Start_Element
(Self : in out XML_Catalog_Handler'Class;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean)
is
-- [XML Catalogs] 6.5.11. The uriSuffix Element
--
-- "The uriSuffix element associates a URI reference with the suffix
-- portion of a URI reference that is not part of an external
-- identifier.
--
-- <uriSuffix
-- id = id
-- uriSuffix = string
-- uri = uri-reference
-- xml:base = uri-reference />
--
-- A uriSuffix entry matches a URI if the normalized value (Section 6.3,
-- “System Identifier and URI Normalization”) of the URI ends precisely
-- with the normalized value of the uriSuffix attribute of the entry.
--
-- If the value of the uri attribute is relative, it must be made
-- absolute with respect to the base URI currently in effect.
URI_Suffix : constant League.Strings.Universal_String
:= Matreshka.XML_Catalogs.Normalization.Normalize_URI
(Attributes.Value (URI_Suffix_Attribute_Name));
URI : constant League.Strings.Universal_String
:= Self.Locator.Base_URI.Resolve
(League.IRIs.From_Universal_String
(Attributes.Value (URI_Attribute_Name))).To_Universal_String;
begin
-- Check that 'uriSuffix' is not empty.
if URI_Suffix.Is_Empty then
Error (Self, "uriSuffix is empty", Success);
return;
end if;
Self.Entry_File.Append (new URI_Suffix_Entry'(URI_Suffix, URI));
end Process_URI_Suffix_Start_Element;
-----------------------------
-- Set_Default_Prefer_Mode --
-----------------------------
procedure Set_Default_Prefer_Mode
(Self : in out XML_Catalog_Handler'Class;
Mode : Matreshka.XML_Catalogs.Entry_Files.Prefer_Mode) is
begin
Self.Default_Prefer_Mode := Mode;
end Set_Default_Prefer_Mode;
--------------------------
-- Set_Document_Locator --
--------------------------
overriding procedure Set_Document_Locator
(Self : in out XML_Catalog_Handler;
Locator : XML.SAX.Locators.SAX_Locator) is
begin
Self.Locator := Locator;
end Set_Document_Locator;
--------------------
-- Start_Document --
--------------------
overriding procedure Start_Document
(Self : in out XML_Catalog_Handler;
Success : in out Boolean) is
begin
Self.Diagnosis := League.Strings.Empty_Universal_String;
Self.Current_Prefer_Mode := Self.Default_Prefer_Mode;
end Start_Document;
---------------
-- Start_DTD --
---------------
overriding procedure Start_DTD
(Self : in out XML_Catalog_Handler;
Name : League.Strings.Universal_String;
Public_Id : League.Strings.Universal_String;
System_Id : League.Strings.Universal_String;
Success : in out Boolean) is
begin
-- Check whether processed document is XML Catalogs entry file.
if Public_Id /= XML_Catalogs_1_0_Public_Id
and Public_Id /= XML_Catalogs_1_1_Public_Id
then
Self.Error ("Unknown XML Catalogs DTD", Success);
end if;
end Start_DTD;
-------------------
-- Start_Element --
-------------------
overriding procedure Start_Element
(Self : in out XML_Catalog_Handler;
Namespace_URI : League.Strings.Universal_String;
Local_Name : League.Strings.Universal_String;
Qualified_Name : League.Strings.Universal_String;
Attributes : XML.SAX.Attributes.SAX_Attributes;
Success : in out Boolean) is
begin
if Namespace_URI /= XML_Catalogs_Namespace then
-- Ignore all non-XML Catalogs elements.
return;
end if;
if Local_Name = Catalog_Tag_Name then
Process_Catalog_Start_Element (Self, Attributes, Success);
elsif Local_Name = Delegate_Public_Tag_Name then
Process_Delegate_Public_Start_Element (Self, Attributes, Success);
elsif Local_Name = Delegate_System_Tag_Name then
Process_Delegate_System_Start_Element (Self, Attributes, Success);
elsif Local_Name = Delegate_URI_Tag_Name then
Process_Delegate_URI_Start_Element (Self, Attributes, Success);
elsif Local_Name = Group_Tag_Name then
Process_Group_Start_Element (Self, Attributes, Success);
elsif Local_Name = Next_Catalog_Tag_Name then
Process_Next_Catalog_Start_Element (Self, Attributes, Success);
elsif Local_Name = Public_Tag_Name then
Process_Public_Start_Element (Self, Attributes, Success);
elsif Local_Name = Rewrite_System_Tag_Name then
Process_Rewrite_System_Start_Element (Self, Attributes, Success);
elsif Local_Name = Rewrite_URI_Tag_Name then
Process_Rewrite_URI_Start_Element (Self, Attributes, Success);
elsif Local_Name = System_Tag_Name then
Process_System_Start_Element (Self, Attributes, Success);
elsif Local_Name = System_Suffix_Tag_Name then
Process_System_Suffix_Start_Element (Self, Attributes, Success);
elsif Local_Name = URI_Tag_Name then
Process_URI_Start_Element (Self, Attributes, Success);
elsif Local_Name = URI_Suffix_Tag_Name then
Process_URI_Suffix_Start_Element (Self, Attributes, Success);
end if;
end Start_Element;
-------------
-- Warning --
-------------
overriding procedure Warning
(Self : in out XML_Catalog_Handler;
Occurrence : XML.SAX.Parse_Exceptions.SAX_Parse_Exception;
Success : in out Boolean) is
begin
Ada.Wide_Wide_Text_IO.Put_Line
(Ada.Wide_Wide_Text_IO.Standard_Error,
"(warning) " & Occurrence.Message.To_Wide_Wide_String);
end Warning;
end Matreshka.XML_Catalogs.Handlers;
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