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 The 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 <json_common.h>
#include <wx/filename.h>
 
#include <wildcards_and_files_ext.h>
#include <gerbview.h>
#include <richio.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;
 
    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(),
                          FILEEXT::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;
    }
 
    WX_STRING_REPORTER reporter;
 
    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( reporter.HasMessage() )
    {
        wxSafeYield();  // Allows slice of time to redraw the screen
                        // to refresh widgets, before displaying messages
        HTML_MESSAGE_BOX mbox( this, _( "Messages" ) );
        mbox.ListSet( reporter.GetMessages() );
        mbox.ShowModal();
    }
 
    return success;
}