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Componentes.Terceros.jvcl/official/3.32/run/JvgXMLSerializer.pas

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git-svn-id: https://192.168.0.254/svn/Componentes.Terceros.jvcl@4 7f62d464-2af8-f54e-996c-e91b33f51cbe
2007-07-10 08:04:15 +00:00
{-----------------------------------------------------------------------------
The contents of this file are subject to the Mozilla Public License
Version 1.1 (the "License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.mozilla.org/MPL/MPL-1.1.html
Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See the License for
the specific language governing rights and limitations under the License.
The Original Code is: JvgXMLSerializer.PAS, released on 2003-01-15.
The Initial Developer of the Original Code is Andrey V. Chudin, [chudin att yandex dott ru]
Portions created by Andrey V. Chudin are Copyright (C) 2003 Andrey V. Chudin.
All Rights Reserved.
Contributor(s):
Michael Beck [mbeck att bigfoot dott com].
Burov Dmitry, translation of russian text.
You may retrieve the latest version of this file at the Project JEDI's JVCL home page,
located at http://jvcl.sourceforge.net
Description:
The component converts given component to XML and back according to
published interface of its class.
XML is made of tags pairs with values put inside. Tags can have no attributes
Topmost tag matches class of the object. Inner tags match properties' names.
For TCollectionItem containing tag matches the name of the class
Tags' nesting is unlimited and repeats(reproduces) the whole published
interface of class of the given object
The following types are supported: integer numbers, floats, enumerations,
sets, strings and chars, variants, classes, stringlists and collections.
Interface:
procedure Serialize(Component: TObject; Stream: TStream);
- Serialization TPersistent -> XML
procedure DeSerialize(Component: TObject; Stream: TStream);
- Loading XML -> TPersistent
property GenerateFormattedXML - Generate Formatted XML
property ExcludeEmptyValues - Skip properties with empty values
property ExcludeDefaultValues - Skip properties with default values
property StrongConformity - Requires XML to has all the corresponding
tags for all class types
property IgnoreUnknownTags - ignore unknown tags when loading XML
property OnGetXMLHeader - Allows to specifies one's own XML header //AFAIR - topmost XML tag
WrapCollections - Wrap collections in individual(dedicated) tags
Limitations:
Each object can have only one collection per collection item class
TStrings derivatives must have no published properties
Procedure types are not supported
To generate DTD it needs object to has all class-properties, with names same
to properties of agregated objects, of single(the same, "one") class
Preconditions:
Object for de-serializatino into, is to be created prior to procedure's call.
Is StringConformity then loading XML must contain tags for all the class-types.
Presence of other tags is not checked.
Extra:
When loading TCollection from XML, it is not voided (?) so you can load
TCollection as a merge of different XML sources.
Known Issues:
-----------------------------------------------------------------------------}
// $Id: JvgXMLSerializer.pas 10612 2006-05-19 19:04:09Z jfudickar $
unit JvgXMLSerializer;
{$I jvcl.inc}
interface
uses
{$IFDEF USEJVCL}
{$IFDEF UNITVERSIONING}
JclUnitVersioning,
{$ENDIF UNITVERSIONING}
{$ENDIF USEJVCL}
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,
{$IFDEF USEJVCL}
Dialogs, ComCtrls, TypInfo,
JvComponentBase;
{$ELSE}
Dialogs, ComCtrls, TypInfo;
{$ENDIF USEJVCL}
type
TOnGetXMLHeader = procedure(Sender: TObject; var Value: string) of object;
TBeforeParsingEvent = procedure(Sender: TObject; Buffer: PChar) of object;
EJvgXMLSerializerException = class(Exception);
XMLSerializerException = class(Exception);
EJvgXMLOpenTagNotFoundException = class(XMLSerializerException);
EJvgXMLCloseTagNotFoundException = class(XMLSerializerException);
EJvgXMLUnknownPropertyException = class(XMLSerializerException);
TJvgXMLSerializerException = class of XMLSerializerException;
{$IFDEF USEJVCL}
TJvgXMLSerializer = class(TJvComponent)
{$ELSE}
TJvgXMLSerializer = class(TComponent)
{$ENDIF USEJVCL}
private
Buffer: PChar;
BufferEnd: PChar;
BufferLength: DWORD;
TokenPtr {, MaxTokenPtr}: PChar;
OutStream: TStream;
FOnGetXMLHeader: TOnGetXMLHeader;
FGenerateFormattedXML: Boolean;
FExcludeEmptyValues: Boolean;
FExcludeDefaultValues: Boolean;
FReplaceReservedSymbols: Boolean;
FStrongConformity: Boolean;
FBeforeParsing: TBeforeParsingEvent;
FWrapCollections: Boolean;
FIgnoreUnknownTags: Boolean;
procedure Check(Expr: Boolean; const Msg: string; E: TJvgXMLSerializerException);
procedure WriteOutStream(const Value: string);
protected
procedure SerializeInternal(Component: TObject; Level: Integer = 1);
procedure DeSerializeInternal(Component: TObject;
ComponentTagName: string; ParentBlockEnd: PChar = nil);
procedure GenerateDTDInternal(Component: TObject; DTDList: TStrings;
Stream: TStream; const ComponentTagName: string);
procedure SetPropertyValue(Component: TObject; PropInfo: PPropInfo; Value,
ValueEnd: PChar; ParentBlockEnd: PChar);
public
DefaultXMLHeader: string;
tickCounter: DWORD;
tickCount: DWORD;
constructor Create(AOwner: TComponent); override;
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> XML }
{ Serialization of object to XML [translated] }
procedure Serialize(Component: TObject; Stream: TStream);
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> XML <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Loading XML into object [translated] }
procedure DeSerialize(Component: TObject; Stream: TStream);
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DTD }
{ Genereating DTD [translated] }
procedure GenerateDTD(Component: TObject; Stream: TStream);
published
property GenerateFormattedXML: Boolean read FGenerateFormattedXML write FGenerateFormattedXML default True;
property ExcludeEmptyValues: Boolean read FExcludeEmptyValues write FExcludeEmptyValues;
property ExcludeDefaultValues: Boolean read FExcludeDefaultValues write FExcludeDefaultValues;
property ReplaceReservedSymbols: Boolean read FReplaceReservedSymbols write FReplaceReservedSymbols;
property StrongConformity: Boolean read FStrongConformity write FStrongConformity default True;
property IgnoreUnknownTags: Boolean read FIgnoreUnknownTags write FIgnoreUnknownTags;
property WrapCollections: Boolean read FWrapCollections write FWrapCollections default True;
property OnGetXMLHeader: TOnGetXMLHeader read FOnGetXMLHeader write FOnGetXMLHeader;
property BeforeParsing: TBeforeParsingEvent read FBeforeParsing write FBeforeParsing;
end;
{$IFDEF USEJVCL}
{$IFDEF UNITVERSIONING}
const
UnitVersioning: TUnitVersionInfo = (
RCSfile: '$URL: https://jvcl.svn.sourceforge.net/svnroot/jvcl/tags/JVCL3_32/run/JvgXMLSerializer.pas $';
Revision: '$Revision: 10612 $';
Date: '$Date: 2006-05-19 21:04:09 +0200 (ven., 19 mai 2006) $';
LogPath: 'JVCL\run'
);
{$ENDIF UNITVERSIONING}
{$ENDIF USEJVCL}
implementation
uses
{$IFDEF USEJVCL}
JvResources,
{$ENDIF USEJVCL}
JvgUtils;
const
ORDINAL_TYPES = [tkInteger, tkChar, tkEnumeration, tkSet];
var
TAB: string;
CR: string;
{$IFNDEF USEJVCL}
resourcestring
(* RUSSIAN
RsOpenXMLTagNotFound = '<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: <%s>';
RsCloseXMLTagNotFound = '<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: </%s>';
RsUnknownProperty = 'Unknown property: %s';
*)
RsOpenXMLTagNotFound = 'Open tag not found: <%s>';
RsCloseXMLTagNotFound = 'Close tag not found: </%s>';
RsUnknownProperty = 'Unknown property: %s';
{$ENDIF !USEJVCL}
constructor TJvgXMLSerializer.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
//...defaults
FGenerateFormattedXML := True;
FStrongConformity := True;
FWrapCollections := True;
end;
//{ <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>. <20><><EFBFBD>-<2D><> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ writes string to output stream. Used for serialization. [translated] }
procedure TJvgXMLSerializer.WriteOutStream(const Value: string);
begin
if Value <> '' then
OutStream.Write(PChar(Value)[0], Length(Value));
end;
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> XML-<2D><><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <20> published <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
// <20><><EFBFBD><EFBFBD>:
// Component - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <20><><EFBFBD><EFBFBD><EFBFBD>:
// <20><><EFBFBD><EFBFBD><EFBFBD> XML <20> <20><><EFBFBD><EFBFBD><EFBFBD> Stream
{
Converts component to XML, according to published interface of its class
Input:
Component - Component to be converted
Output:
XML text into Stream
}
procedure TJvgXMLSerializer.Serialize(Component: TObject; Stream: TStream);
var
Result: string;
begin
TAB := IIF(GenerateFormattedXML, #9, '');
CR := IIF(GenerateFormattedXML, #13#10, '');
Result := '';
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> XML <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Retrieving XML header [translated] }
if Assigned(OnGetXMLHeader) then
OnGetXMLHeader(Self, Result);
if Result = '' then
Result := DefaultXMLHeader;
OutStream := Stream;
WriteOutStream(PChar(Result));
WriteOutStream(PChar(CR + '<' + Component.ClassName + '>'));
SerializeInternal(Component);
WriteOutStream(PChar(CR + '</' + Component.ClassName + '>'));
end;
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> XML
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>:
// Serialize()
// <20><><EFBFBD><EFBFBD>:
// Component - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Level - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <20><><EFBFBD><EFBFBD><EFBFBD>:
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> XML <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> WriteOutStream()
{
Internal procedure Object->XML
Is called from:
Serialize()
Input:
Component - Component to be converted
Level - Level of nesting (for formatted output)
Output:
XML string into output Stream via .WriteOutStream() method
}
procedure TJvgXMLSerializer.SerializeInternal(Component: TObject; Level: Integer = 1);
var
PropInfo: PPropInfo;
TypeInf, PropTypeInf: PTypeInfo;
TypeData: PTypeData;
I, J: Integer;
AName, PropName, sPropValue: string;
PropList: PPropList;
NumProps: Word;
PropObject: TObject;
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Adds opening tag with given name [translated] }
procedure addOpenTag(const Value: string);
begin
WriteOutStream(CR + DupStr(TAB, Level) + '<' + Value + '>');
Inc(Level);
end;
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Adds closing tag with given name [translated] }
procedure addCloseTag(const Value: string; AddBreak: Boolean = False);
begin
Dec(Level);
if AddBreak then
WriteOutStream(CR + DupStr(TAB, Level));
WriteOutStream('</' + Value + '>');
end;
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Adds value [in]to result string [translated] }
procedure addValue(const Value: string);
begin
WriteOutStream(Value);
end;
begin
// Result := '';
{ Playing with RTTI }
TypeInf := Component.ClassInfo;
AName := TypeInf^.Name;
TypeData := GetTypeData(TypeInf);
NumProps := TypeData^.PropCount;
GetMem(PropList, NumProps * SizeOf(Pointer));
try
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Getting list of properties [translated] }
GetPropInfos(TypeInf, PropList);
for I := 0 to NumProps - 1 do
begin
PropName := PropList^[I]^.Name;
PropTypeInf := PropList^[I]^.PropType^;
PropInfo := PropList^[I];
//{ <20><><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ? }
{ Does the property wish to be saved? [translated] }
if not IsStoredProp(Component, PropInfo) then
Continue;
case PropTypeInf^.Kind of
tkInteger, tkChar, tkEnumeration, tkFloat, tkString, tkSet,
tkWChar, tkLString, tkWString, tkVariant:
begin
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Getting property's value [translated] }
sPropValue := GetPropValue(Component, PropName, True);
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Checking if value is empty or is default [translated] }
if ExcludeEmptyValues and (sPropValue = '') then
Continue;
if ExcludeDefaultValues and (PropTypeInf^.Kind in ORDINAL_TYPES) and
(sPropValue = IntToStr(PropInfo.Default)) then
Continue;
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ special characters placeholders [translated] }
if FReplaceReservedSymbols then
begin
sPropValue := StringReplace(sPropValue, '<', '&lt;',
[rfReplaceAll]);
sPropValue := StringReplace(sPropValue, '>', '&gt;',
[rfReplaceAll]);
// sPropValue := StringReplace(sPropValue, '&', '&', [rfReplaceAll]);
end;
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> XML }
{ converting to XML [translated] }
addOpenTag(PropName);
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ adds property's value to result [translated] }
addValue(sPropValue);
addCloseTag(PropName);
end;
tkClass:
//{ <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ make recursive call for class-types [translated] }
begin
PropObject := GetObjectProp(Component, PropInfo);
if Assigned(PropObject) then
begin
//{ <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>-<2D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> }
{ make recursive call for children class-types [translated] }
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Specific handlers for some certain classes [translated] }
if PropObject is TStrings then
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ text lists [translated] }
begin
addOpenTag(PropName);
WriteOutStream(TStrings(PropObject).CommaText);
addCloseTag(PropName, True);
end
else
if PropObject is TCollection then
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ collections [translated] }
begin
if WrapCollections then
addOpenTag(PropName);
SerializeInternal(PropObject, Level);
for J := 0 to (PropObject as TCollection).Count - 1 do
begin
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Container-tag with name of the class [translated] }
addOpenTag(TCollection(PropObject).Items[J].ClassName);
SerializeInternal(TCollection(PropObject).Items[J],
Level);
addCloseTag(TCollection(PropObject).Items[J].ClassName, True);
end;
if WrapCollections then
addCloseTag(PropName, True);
end
else
if PropObject is TPersistent then
begin
addOpenTag(PropName);
SerializeInternal(PropObject, Level);
addCloseTag(PropName, True);
end;
//{ <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: TTreeNodes, TListItems }
{ Here one can add handling of other classes like TreeNodes, TListItems [translated] }
end;
//{ <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Closing object's tag after proceeded its properties [translated] }
end;
end;
end;
finally
FreeMem(PropList, NumProps * SizeOf(Pointer));
end;
end;
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> XML-<2D><><EFBFBD><EFBFBD><EFBFBD>.
// <20><><EFBFBD><EFBFBD>:
// Component - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Stream - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> XML
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Component <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
{
Loads component's properties ("data") from stream, containing XML stream
Input:
Component - Component to be convertes.
Stream - Stream containing XML to load
Preconditions:
Components object was created prior to procedure's call
}
procedure TJvgXMLSerializer.DeSerialize(Component: TObject; Stream: TStream);
begin
GetMem(Buffer, Stream.Size);
try
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Retrievign data from stream [translated] }
Stream.Read(Buffer[0], Stream.Size + 1);
if Assigned(BeforeParsing) then
BeforeParsing(Self, Buffer);
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Setting current pointer of reading data [translated] }
TokenPtr := Buffer;
BufferLength := Stream.Size - 1;
BufferEnd := Buffer + BufferLength;
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Calling loader [translated] }
DeSerializeInternal(Component, Component.ClassName);
finally
FreeMem(Buffer);
end;
end;
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> XML
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>:
// Serialize()
// <20><><EFBFBD><EFBFBD>:
// Component - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// ComponentTagName - <20><><EFBFBD> XML <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// ParentBlockEnd - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD> XML <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>
{
Recursive procedure for loading of object from text buffer, containing XML
Called from::
Serialize()
Input:
Component - Component to be converted,
ComponentTagName - Name of XML tag for object (Arioch: may differ from
ClassName for CollectionItems, for XML header),
ParentBlockEnd - Pointer to the end of XML-description of the parent tag.
}
procedure TJvgXMLSerializer.DeSerializeInternal(Component: TObject;
ComponentTagName: string; ParentBlockEnd: PChar = nil);
var
BlockStart, BlockEnd, TagStart, TagEnd: PChar;
TagName, TagValue, TagValueEnd: PChar;
TypeInf: PTypeInfo;
TypeData: PTypeData;
PropIndex: Integer;
AName: string;
PropList: PPropList;
NumProps: Word;
//{ <20><><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Searching object for property with given name [translated] }
function FindProperty(TagName: PChar): Integer;
var
I: Integer;
begin
Result := -1;
for I := 0 to NumProps - 1 do
if CompareStr(PropList^[I]^.Name, TagName) = 0 then
begin
Result := I;
Break;
end;
end;
procedure SkipSpaces(var TagEnd: PChar);
begin
while TagEnd[0] <= #33 do
Inc(TagEnd);
end;
// StrPosExt - <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
// <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> StrPos.
function StrPosExt(const Str1, Str2: PChar; Str1Len: DWORD): PChar; assembler;
asm
PUSH EDI
PUSH ESI
PUSH EBX
OR EAX,EAX // Str1
JE @@2 // <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Str1 <20><><EFBFBD><EFBFBD><EFBFBD> - <20><> <20><><EFBFBD><EFBFBD><EFBFBD>
OR EDX,EDX // Str2
JE @@2 // <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Str2 <20><><EFBFBD><EFBFBD><EFBFBD> - <20><> <20><><EFBFBD><EFBFBD><EFBFBD>
MOV EBX,EAX
MOV EDI,EDX // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> SCASB - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Str2
XOR AL,AL // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> AL
push ECX // <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
MOV ECX,0FFFFFFFFH // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
REPNE SCASB // <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Str2
NOT ECX // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ECX - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>+1
DEC ECX // <20> ECX - <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Str2
JE @@2 // <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> - <20><><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD>
MOV ESI,ECX // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> ESI
pop ECX
SUB ECX,ESI // ECX == <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> : Str1 - Str2
JBE @@2 // <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> - <20><><EFBFBD><EFBFBD><EFBFBD>
MOV EDI,EBX // EDI - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Str1
LEA EBX,[ESI-1] // EBX - <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
@@1: MOV ESI,EDX // ESI - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Str2
LODSB // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> AL
REPNE SCASB // <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> EDI
JNE @@2 // <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> - <20><> <20><><EFBFBD><EFBFBD><EFBFBD>
MOV EAX,ECX // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
PUSH EDI // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
MOV ECX,EBX
REPE CMPSB // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
POP EDI
MOV ECX,EAX
JNE @@1 // <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> - <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
LEA EAX,[EDI-1]
JMP @@3
@@2: XOR EAX,EAX
@@3: POP EBX
POP ESI
POP EDI
end;
begin
{ Playing with RTTI }
TypeInf := Component.ClassInfo;
AName := TypeInf^.Name;
TypeData := GetTypeData(TypeInf);
NumProps := TypeData^.PropCount;
if not WrapCollections and (Component is TCollection) then
ComponentTagName := TCollection(Component).ItemClass.ClassName;
GetMem(PropList, NumProps * SizeOf(Pointer));
try
GetPropInfos(TypeInf, PropList);
//{ <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> }
{ Looking for opening tag [translated] }
BlockStart := StrPosExt(TokenPtr, PChar('<' + ComponentTagName + '>'),
BufferEnd - TokenPtr { = BufferLength});
//{ <20><><EFBFBD><EFBFBD> <20><><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20><> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> }
{ If tag is not found and is not required - skip it [translated] }
if (BlockStart = nil) and not StrongConformity then
exit;
//{ <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Otherwise Check its presence [translated] }
Check(BlockStart <> nil, Format(RsOpenXMLTagNotFound,
[ComponentTagName]), EJvgXMLOpenTagNotFoundException);
Inc(BlockStart, Length(ComponentTagName) + 2);
//{ <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> }
{ Looking for closing tag [translated] }
BlockEnd := StrPosExt(BlockStart, PChar('</' + ComponentTagName + '>'),
BufferEnd - BlockStart + 3 + Length(ComponentTagName) {BufferLength});
Check(BlockEnd <> nil, Format(RsCloseXMLTagNotFound,
[ComponentTagName]), EJvgXMLCloseTagNotFoundException);
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>. <20><><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> }
{ Checking the closing tag to be nested within parent tag [translated] }
Check((ParentBlockEnd = nil) or (BlockEnd < ParentBlockEnd),
Format(RsCloseXMLTagNotFound, [ComponentTagName]),
EJvgXMLCloseTagNotFoundException);
TagEnd := BlockStart;
SkipSpaces(TagEnd);
//{ XML <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ XML parser [translated] }
while (TagEnd < BlockEnd) { and (TagEnd >= TokenPtr)} do
begin
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ fast search for "<" and ">" [translated] }
asm
MOV CL, '<'
MOV EDX, Pointer(TagEnd)
DEC EDX
@@1: INC EDX
MOV AL, Byte[EDX]
CMP AL, CL
JNE @@1
MOV TagStart, EDX
MOV CL, '>'
@@2: INC EDX
MOV AL, Byte[EDX]
CMP AL, CL
JNE @@2
MOV TagEnd, EDX
end;
GetMem(TagName, TagEnd - TagStart + 1);
try
//{ TagName - <20><><EFBFBD> <20><><EFBFBD><EFBFBD> }
{ Tag Name - Tag Name [translated] }
StrLCopy(TagName, TagStart + 1, TagEnd - TagStart - 1);
//{ TagEnd - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> }
{ TagEnd - Closing tag [translated] }
TagEnd := StrPosExt(TagEnd, PChar('</' + TagName + '>'),
BufferEnd - TagEnd + 3 + Length(TagName) { = BufferLength});
//Inc(TagStart, Length('</' + TagName + '>')-1);
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> }
{ Beginning of the next nested("children") tag [translated] }
TagValue := TagStart + Length('</' + TagName + '>') - 1;
TagValueEnd := TagEnd;
//{ <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> }
{ Looking for property matching the tag [translated] }
PropIndex := FindProperty(TagName);
if not WrapCollections and (PropIndex = -1) then
PropIndex := FindProperty(PChar(TagName + 's'))
else
TokenPtr := TagStart;
if not IgnoreUnknownTags then
Check(PropIndex <> -1, Format(RsUnknownProperty, [TagName]),
EJvgXMLUnknownPropertyException);
if PropIndex <> -1 then
SetPropertyValue(Component, PropList^[PropIndex], TagValue,
TagValueEnd, BlockEnd);
Inc(TagEnd, Length('</' + TagName + '>'));
SkipSpaces(TagEnd);
finally
FreeMem(TagName);
end;
end;
finally
FreeMem(PropList);//, NumProps * SizeOf(Pointer));
end;
end;
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>:
// DeSerializeInternal()
// <20><><EFBFBD><EFBFBD>:
// Component - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// PropInfo - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Value - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// ParentBlockEnd - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD> XML <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
{
Initialisation of the object's property
Called from:
DeSerializeInternal()
Input:
Component - Component to be initialized
PropInfo - Information about type of property to set
Value - Value of the property
ParentBlockEnd - Pointer to the end of XML description of parent tag. Used for recursion.
}
procedure TJvgXMLSerializer.SetPropertyValue(Component: TObject; PropInfo:
PPropInfo; Value, ValueEnd: PChar; ParentBlockEnd: PChar);
var
PropTypeInf: PTypeInfo;
PropObject: TObject;
CollectionItem: TCollectionItem;
SValue: string;
TmpChar: Char;
begin
PropTypeInf := PropInfo.PropType^;
case PropTypeInf^.Kind of
tkInteger, tkChar, tkEnumeration, tkFloat, tkString, tkSet,
tkWChar, tkLString, tkWString, tkVariant:
begin
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> zero terminated string }
{ simulates zero terminated string [translated] }
TmpChar := ValueEnd[0];
ValueEnd[0] := #0;
SValue := StrPas(Value);
ValueEnd[0] := TmpChar;
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> XML,
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
{ Replacing specific characters (compatible only with that very component) [translated] }
if FReplaceReservedSymbols then
begin
SValue := StringReplace(SValue, '&lt;', '<', [rfReplaceAll]);
SValue := StringReplace(SValue, '&gt;', '>', [rfReplaceAll]);
// SValue := StringReplace(SValue, '&', '&', [rfReplaceAll]);
end;
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Changing delimiter to system-wide [translated] }
if PropTypeInf^.Kind = tkFloat then
if DecimalSeparator = ',' then
SValue := StringReplace(SValue, '.', DecimalSeparator, [rfReplaceAll])
else
SValue := StringReplace(SValue, ',', DecimalSeparator, [rfReplaceAll]);
//{ <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> tkSet <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ tkSet parser needs "<" and ">" for correct transformation [translated] }
if PropTypeInf^.Kind = tkSet then
SValue := '[' + SValue + ']';
SetPropValue(Component, PropInfo^.Name, SValue);
end;
tkClass:
begin
PropObject := GetObjectProp(Component, PropInfo);
if Assigned(PropObject) then
begin
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Specific(individual) handling of some specific classes [translated] }
if PropObject is TStrings then
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ text lists [translated] }
begin
TmpChar := ValueEnd[0];
ValueEnd[0] := #0;
SValue := StrPas(Value);
ValueEnd[0] := TmpChar;
TStrings(PropObject).CommaText := SValue;
end
else
if PropObject is TCollection then
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ collections [translated] }
begin
while True do
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ we can't foretell number of element in TCollection [translated] }
begin
CollectionItem := (PropObject as TCollection).Add;
try
DeSerializeInternal(CollectionItem,
CollectionItem.ClassName, ParentBlockEnd);
except
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Exception if next element is not found [translated] }
on E: Exception do
begin
// Application.MessageBox(PChar(E.Message), '', MB_OK); - debug string
CollectionItem.Free;
// raise; - debug string
Break;
end;
end;
end;
end
else
//{ <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Other classes are just processed recursevly [translated] }
DeSerializeInternal(PropObject, PropInfo^.Name,
ParentBlockEnd);
end;
end;
end;
end;
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DTD <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> published <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
// <20><><EFBFBD><EFBFBD>:
// Component - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <20><><EFBFBD><EFBFBD><EFBFBD>:
// <20><><EFBFBD><EFBFBD><EFBFBD> DTD <20> <20><><EFBFBD><EFBFBD><EFBFBD> Stream
{
This procedure generates DTD for given object according to its published interface
Input:
Component - Object
Output:
text of DTD into Stream
}
procedure TJvgXMLSerializer.GenerateDTD(Component: TObject; Stream: TStream);
var
DTDList: TStringList;
begin
DTDList := TStringList.Create;
try
GenerateDTDInternal(Component, DTDList, Stream, Component.ClassName);
finally
DTDList.Free;
end;
end;
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DTD <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
// <20><><EFBFBD><EFBFBD>:
// Component - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// DTDList - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DTD
// <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
// <20><><EFBFBD><EFBFBD><EFBFBD>:
// <20><><EFBFBD><EFBFBD><EFBFBD> DTD <20> <20><><EFBFBD><EFBFBD><EFBFBD> Stream
{
Inner recursive procedure that generates DTD for given object
Input:
Component - Object
DTDList - list of already determined describedDTD elements
to avoid duplicating
Output:
DTD text into Stream
}
procedure TJvgXMLSerializer.GenerateDTDInternal(Component: TObject; DTDList:
TStrings; Stream: TStream; const ComponentTagName: string);
var
PropInfo: PPropInfo;
TypeInf, PropTypeInf: PTypeInfo;
TypeData: PTypeData;
I: Integer;
AName, PropName, TagContent: string;
PropList: PPropList;
NumProps: Word;
PropObject: TObject;
const
PCDATA = '#PCDATA';
procedure addElement(const ElementName: string; Data: string);
var
S: string;
begin
if DTDList.IndexOf(ElementName) <> -1 then
exit;
DTDList.Add(ElementName);
S := '<!ELEMENT ' + ElementName + ' ';
if Data = '' then
Data := PCDATA;
S := S + '(' + Data + ')>'#13#10;
Stream.Write(PChar(S)[0], Length(S));
end;
begin
{ Playing with RTTI }
TypeInf := Component.ClassInfo;
AName := TypeInf^.Name;
TypeData := GetTypeData(TypeInf);
NumProps := TypeData^.PropCount;
GetMem(PropList, NumProps * SizeOf(Pointer));
try
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Getting list of properties [translated] }
GetPropInfos(TypeInf, PropList);
TagContent := '';
for I := 0 to NumProps - 1 do
begin
PropName := PropList^[I]^.Name;
PropTypeInf := PropList^[I]^.PropType^;
PropInfo := PropList^[I];
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> }
{ Skip types that are not supported [translated] }
if not (PropTypeInf^.Kind in [tkDynArray, tkArray, tkRecord,
tkInterface, tkMethod]) then
begin
if TagContent <> '' then
TagContent := TagContent + '|';
TagContent := TagContent + PropName;
end;
case PropTypeInf^.Kind of
tkInteger, tkChar, tkFloat, tkString,
tkWChar, tkLString, tkWString, tkVariant, tkEnumeration, tkSet:
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> DTD. <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> - #PCDATA }
{ conversion to DTD. Theese types will have #PCDATA model of content [translated] }
addElement(PropName, PCDATA);
//{ <20><><EFBFBD> <20><><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Code might be useful when using attributes [translated] }
{
tkEnumeration:
begin
TypeData:= GetTypeData(GetTypeData(PropTypeInf)^.BaseType^);
S := '';
for J := TypeData^.MinValue to TypeData^.MaxValue do
begin
if S <> '' then S := S + '|';
S := S + GetEnumName(PropTypeInf, J);
end;
addElement(PropName, S);
end;
}
tkClass:
//{ <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ make recursive call for class-types [translated] }
begin
PropObject := GetObjectProp(Component, PropInfo);
if Assigned(PropObject) then
begin
//{ <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>-<2D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> }
{ Specific(individual) handling of some specific classes [translated] }
if PropObject is TPersistent then
GenerateDTDInternal(PropObject, DTDList, Stream, PropName);
end;
end;
end;
end;
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
//{ <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Collections require item("element") type(class) to be included into
content model [translated] }
if Component is TCollection then
begin
if TagContent <> '' then
TagContent := TagContent + '|';
TagContent := TagContent + (Component as TCollection).ItemClass.ClassName + '*';
end;
//{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
{ Adding content model for the element(item) [translated] }
addElement(ComponentTagName, TagContent);
finally
FreeMem(PropList, NumProps * SizeOf(Pointer));
end;
end;
procedure TJvgXMLSerializer.Check(Expr: Boolean; const Msg: string;
E: TJvgXMLSerializerException);
begin
if not Expr then
raise E.Create('XMLSerializerException'#13#10#13#10 + Msg);
end;
{$IFDEF USEJVCL}
{$IFDEF UNITVERSIONING}
initialization
RegisterUnitVersion(HInstance, UnitVersioning);
finalization
UnregisterUnitVersion(HInstance);
{$ENDIF UNITVERSIONING}
{$ENDIF USEJVCL}
end.
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