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{ JSON 2 Pascal class converter
Copyright (C) 2016 Michael Van Canneyt (michael@freepascal.org)
This source 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 code 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.
A copy of the GNU General Public License is available on the World Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can
also obtain it by writing to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
}
program json2pas;
{$mode objfpc}{$H+}
uses
Classes, SysUtils, CustApp, jsonparser, fpjsontopas;
type
{ TJSON2PasApplication }
TJSON2PasApplication = class(TCustomApplication)
Private
FGen : TJSONToPascal;
FIN : TFileStream;
FON : String;
procedure ProcessOptions;
protected
procedure DoRun; override;
public
constructor Create(TheOwner: TComponent); override;
destructor Destroy; override;
procedure Usage(Msg: String); virtual;
end;
{ TJSON2PasApplication }
procedure TJSON2PasApplication.ProcessOptions;
var
UN,J: String;
begin
UN:='';
if HasOption('d','generate-delphi') then
FGen.Options:=FGen.Options+[jpoDelphiJSON];
if HasOption('l','generate-load') then
FGen.Options:=FGen.Options+[jpoGenerateLoad];
if HasOption('s','generate-save') then
FGen.Options:=FGen.Options+[jpoGenerateSave];
if HasOption('c','load-ignores-case') then
FGen.Options:=FGen.Options+[jpoLoadCaseInsensitive];
if HasOption('e','use-setter') then
FGen.Options:=FGen.Options+[jpoUseSetter];
if HasOption('r','load-with-error') then
FGen.Options:=FGen.Options+[jpoUnknownLoadPropsError];
if HasOption('u','unit') then
UN:=GetOptionValue('u','unit');
J:=GetOptionValue('i','input');
if (J<>'') then
begin
FIN:=TFileStream.Create(J,fmOpenRead or fmShareDenyWrite);
FGen.JSONStream:=FIN;
end
else
FGen.JSON:=getOptionValue('j','json');
if HasOption('o','output') then
FON:=GetOptionValue('o','output');
if (FON='') then
begin
if Assigned(FIN) then
FON:=ChangeFileExt(FIN.FileName,'')
else if (UN<>'') then
FON:=UN;
if (UN='') then
UN:=ChangeFileExt(ExtractFileName(FON),'');
end
else
UN:=ChangeFileExt(ExtractFileName(FON),'');
if (ExtractFileExt(FON)='') then
if (jpoDelphiJSON in Fgen.Options) then
FON:=FON+'.pas'
else
FON:=FON+'.pp';
FGen.DestUnitName:=UN;
If HasOption('n','classname') then
FGen.PropertyMap.AddPath('',GetOptionValue('n','classname'));
end;
procedure TJSON2PasApplication.DoRun;
var
ErrorMsg: String;
begin
// quick check parameters
ErrorMsg:=CheckOptions('hi:j:u:o:n:dlscer', ['help','input:','output:','unit:','json:','generate-delphi','generate-load','generate-save','load-ignores-case','use-setter','classname:','load-with-error']);
if (ErrorMsg<>'') or HasOption('h', 'help') then
Usage(ErrorMsg);
ProcessOptions;
FGen.Execute;
FGen.Code.SaveToFile(FON);
Terminate;
end;
constructor TJSON2PasApplication.Create(TheOwner: TComponent);
begin
inherited Create(TheOwner);
StopOnException:=True;
FGen:=TJSONToPascal.Create(Self);
end;
destructor TJSON2PasApplication.Destroy;
begin
FreeAndNil(FGen);
FreeAndNil(FIN);
inherited Destroy;
end;
procedure TJSON2PasApplication.Usage(Msg : String);
begin
if (Msg<>'') then
Writeln('Error : ',Msg);
writeln('Usage: ', ExeName, ' [options]');
Writeln('Where options is one or more of:');
// 'hi:j:u:o:n:dlscer', ['help','input:','output:','unit:','json:','generate-delphi','generate-load','generate-save','load-ignores-case','use-setter','classname:','load-with-error']);
Writeln('-h --help Show this help');
Writeln('-i --input=file Use file as JSON input. The file must contain a valid JSON object.');
Writeln('-i --json=json Use json as JSON input. The value must contain a valid JSON object.');
Writeln('-u --unit=name Use name as the name of the unit.');
Writeln(' If no output file is specified, this sets the name');
Writeln('-o --output=file Set the output filename. Sets the unit name if none is given');
Writeln('-d --generate-delphi Use Delphi 10 JSON routines');
Writeln('-l --generate-load Create LoadFromJSON routine');
Writeln('-s --generate-save Create SaveToJSON routine');
Writeln('-c --load-ignores-case The LoadFromJSON routine will ignore case');
Writeln('-e --use-setter Property setters use a routine instead of writing to field');
Writeln('-n --classname=name Set the name of the top-level class (default: TMyObject)');
Writeln('-r --load-with-error Load will raise an exception if an unknown property is met');
Halt(Ord(Msg<>''));
end;
var
Application: TJSON2PasApplication;
begin
Application:=TJSON2PasApplication.Create(nil);
Application.Title:='JSON to Pascal code generator';
Application.Run;
Application.Free;
end.
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