job_file_reader.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2007-2019 Jean-Pierre Charras jp.charras at wanadoo.fr
 * Copyright (C) 1992-2019 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
#include <nlohmann/json.hpp>
#include <wx/filename.h>
 
#include <wildcards_and_files_ext.h>
#include <gerbview.h>
#include <richio.h>
#include <locale_io.h>
#include <string_utils.h>
#include <gerber_file_image.h>
#include <gerber_file_image_list.h>
#include <gerbview_frame.h>
#include <reporter.h>
#include <gbr_metadata.h>
#include <dialogs/html_message_box.h>
#include <view/view.h>
#include <wx/filedlg.h>
 
 
using json = nlohmann::json;
 
class GERBER_JOBFILE_READER
{
public:
 GERBER_JOBFILE_READER( const wxString& aFileName, REPORTER* aReporter )
 {
 m_filename = aFileName;
 m_reporter = aReporter;
 }
 
 ~GERBER_JOBFILE_READER() {}
 
 bool ReadGerberJobFile(); 
 wxArrayString& GetGerberFiles() { return m_GerberFiles; }
 
private:
 REPORTER* m_reporter;
 wxFileName m_filename;
 wxArrayString m_GerberFiles; // List of gerber files in job
 
 // Convert a JSON string, that uses escaped sequence of 4 hexadecimal digits
 // to encode unicode chars when not ASCII7 codes
 // json11 converts this sequence to UTF8 string
 wxString formatStringFromJSON( const std::string& name );
};
 
 
bool GERBER_JOBFILE_READER::ReadGerberJobFile()
{
 // Read the gerber file */
 FILE* jobFile = wxFopen( m_filename.GetFullPath(), wxT( "rt" ) );
 
 if( jobFile == nullptr )
 return false;
 
 LOCALE_IO toggleIo;
 
 FILE_LINE_READER jobfileReader( jobFile, m_filename.GetFullPath() ); // Will close jobFile
 
 wxString data;
 
 // detect the file format: old (deprecated) gerber format of official JSON format
 bool json_format = false;
 
 char* line = jobfileReader.ReadLine();
 
 if( !line ) // end of file
 return false;
 
 data = line;
 
 if( data.Contains( wxT( "{" ) ) )
 json_format = true;
 
 if( json_format )
 {
 while( ( line = jobfileReader.ReadLine() ) != nullptr )
 data << '\n' << line;
 
 try
 {
 json js = json::parse( TO_UTF8( data ) );
 
 for( json& entry : js["FilesAttributes"] )
 {
 std::string name = entry["Path"].get<std::string>();
 m_GerberFiles.Add( formatStringFromJSON( name ) );
 }
 }
 catch( ... )
 {
 return false;
 }
 }
 else
 {
 if( m_reporter )
 m_reporter->ReportTail( _( "This job file uses an outdated format. Please recreate it." ),
 RPT_SEVERITY_WARNING );
 
 return false;
 }
 
 return true;
}
 
 
wxString GERBER_JOBFILE_READER::formatStringFromJSON( const std::string& name )
{
 // Convert a JSON string, that uses a escaped sequence of 4 hexadecimal digits
 // to encode unicode chars
 // Our json11 library returns in this case a UTF8 sequence. Just convert it to
 // a wxString.
 wxString wstr = From_UTF8( name.c_str() );
 return wstr;
}
 
 
 
bool GERBVIEW_FRAME::LoadGerberJobFile( const wxString& aFullFileName )
{
 wxFileName filename = aFullFileName;
 wxString currentPath;
 bool success = true;
 
 if( !filename.IsOk() )
 {
 // Use the current working directory if the file name path does not exist.
 if( filename.DirExists() )
 currentPath = filename.GetPath();
 else
 currentPath = m_mruPath;
 
 wxFileDialog dlg( this, _( "Open Gerber Job File" ),
 currentPath,
 filename.GetFullName(),
 GerberJobFileWildcard(),
 wxFD_OPEN | wxFD_FILE_MUST_EXIST | wxFD_CHANGE_DIR );
 
 if( dlg.ShowModal() == wxID_CANCEL )
 return false;
 
 filename = dlg.GetPath();
 currentPath = filename.GetPath();
 m_mruPath = currentPath;
 }
 else
 {
 currentPath = filename.GetPath();
 m_mruPath = currentPath;
 }
 
 wxString msg;
 WX_STRING_REPORTER reporter( &msg );
 
 if( filename.IsOk() )
 {
 GERBER_JOBFILE_READER gbjReader( filename.GetFullPath(), &reporter );
 
 if( gbjReader.ReadGerberJobFile() )
 {
 // Update the list of recent drill files.
 UpdateFileHistory( filename.GetFullPath(), &m_jobFileHistory );
 
 Clear_DrawLayers( false );
 ClearMsgPanel();
 
 wxArrayString& gbrfiles = gbjReader.GetGerberFiles();
 
 // 0 = Gerber file type
 std::vector<int> fileTypesVec( gbrfiles.Count(), 0 );
 success = LoadListOfGerberAndDrillFiles( currentPath, gbrfiles, &fileTypesVec );
 
 Zoom_Automatique( false );
 }
 }
 
 SortLayersByX2Attributes();
 
 if( !msg.IsEmpty() )
 {
 wxSafeYield(); // Allows slice of time to redraw the screen
 // to refresh widgets, before displaying messages
 HTML_MESSAGE_BOX mbox( this, _( "Messages" ) );
 mbox.ListSet( msg );
 mbox.ShowModal();
 }
 
 return success;
}