netlist_exporter_pads.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2024 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 <build_version.h>
#include <confirm.h>
 
#include <connection_graph.h>
#include <string_utils.h>
#include <sch_edit_frame.h>
#include <sch_reference_list.h>
 
#include "netlist_exporter_pads.h"
 
bool NETLIST_EXPORTER_PADS::WriteNetlist( const wxString& aOutFileName,
 unsigned /* aNetlistOptions */,
 REPORTER& aReporter )
{
 int ret = 0;
 FILE* f = nullptr;
 
 if( ( f = wxFopen( aOutFileName, wxT( "wt" ) ) ) == nullptr )
 {
 wxString msg = wxString::Format( _( "Failed to create file '%s'." ), aOutFileName );
 aReporter.Report( msg, RPT_SEVERITY_ERROR );
 return false;
 }
 
 wxString msg;
 wxString footprint;
 SCH_SYMBOL* symbol;
 
 ret |= fputs( "*PADS-PCB*\n", f );
 ret |= fputs( "*PART*\n", f );
 
 // Create netlist footprints section
 m_referencesAlreadyFound.Clear();
 
 for( const SCH_SHEET_PATH& sheet : m_schematic->BuildSheetListSortedByPageNumbers() )
 {
 for( SCH_ITEM* item : sheet.LastScreen()->Items().OfType( SCH_SYMBOL_T ) )
 {
 symbol = findNextSymbol( item, sheet );
 
 if( !symbol )
 continue;
 
 if( symbol->GetExcludedFromBoard() )
 continue;
 
 footprint = symbol->GetFootprintFieldText( true, &sheet, false );
 
 footprint = footprint.Trim( true );
 footprint = footprint.Trim( false );
 footprint.Replace( wxT( " " ), wxT( "_" ) );
 
 if( footprint.IsEmpty() )
 {
 // fall back to value field
 footprint = symbol->GetValue( true, &sheet, false );
 footprint.Replace( wxT( " " ), wxT( "_" ) );
 footprint = footprint.Trim( true );
 footprint = footprint.Trim( false );
 }
 
 msg = symbol->GetRef( &sheet );
 ret |= fprintf( f, "%-16s %s\n", TO_UTF8( msg ), TO_UTF8( footprint ) );
 }
 }
 
 ret |= fputs( "\n", f );
 
 if( !writeListOfNets( f ) )
 ret = -1; // set error
 
 fclose( f );
 
 return ret >= 0;
}
 
 
bool NETLIST_EXPORTER_PADS::writeListOfNets( FILE* f )
{
 int ret = 0;
 
 wxString initialSignalLine;
 wxString netName;
 
 ret |= fputs( "*NET*\n", f );
 
 for( const auto& [ key, subgraphs ] : m_schematic->ConnectionGraph()->GetNetMap() )
 {
 netName = key.Name;
 
 std::vector<std::pair<SCH_PIN*, SCH_SHEET_PATH>> sorted_items;
 
 for( CONNECTION_SUBGRAPH* subgraph : subgraphs )
 {
 SCH_SHEET_PATH sheet = subgraph->GetSheet();
 
 for( SCH_ITEM* item : subgraph->GetItems() )
 {
 if( item->Type() == SCH_PIN_T )
 sorted_items.emplace_back( static_cast<SCH_PIN*>( item ), sheet );
 }
 }
 
 // Netlist ordering: Net name, then ref des, then pin name
 std::sort( sorted_items.begin(), sorted_items.end(),
 []( std::pair<SCH_PIN*, SCH_SHEET_PATH> a, std::pair<SCH_PIN*, SCH_SHEET_PATH> b )
 {
 wxString ref_a = a.first->GetParentSymbol()->GetRef( &a.second );
 wxString ref_b = b.first->GetParentSymbol()->GetRef( &b.second );
 
 if( ref_a == ref_b )
 return a.first->GetShownNumber() < b.first->GetShownNumber();
 
 return ref_a < ref_b;
 } );
 
 // Some duplicates can exist, for example on multi-unit parts with duplicated
 // pins across units. If the user connects the pins on each unit, they will
 // appear on separate subgraphs. Remove those here:
 sorted_items.erase( std::unique( sorted_items.begin(), sorted_items.end(),
 []( std::pair<SCH_PIN*, SCH_SHEET_PATH> a, std::pair<SCH_PIN*, SCH_SHEET_PATH> b )
 {
 wxString ref_a = a.first->GetParentSymbol()->GetRef( &a.second );
 wxString ref_b = b.first->GetParentSymbol()->GetRef( &b.second );
 
 return ref_a == ref_b && a.first->GetShownNumber() == b.first->GetShownNumber();
 } ),
 sorted_items.end() );
 
 std::vector<wxString> netConns;
 
 for( const std::pair<SCH_PIN*, SCH_SHEET_PATH>& pair : sorted_items )
 {
 SCH_PIN* pin = pair.first;
 SCH_SHEET_PATH sheet = pair.second;
 
 wxString refText = pin->GetParentSymbol()->GetRef( &sheet );
 wxString pinText = pin->GetShownNumber();
 
 // Skip power symbols and virtual symbols
 if( refText[0] == wxChar( '#' ) )
 continue;
 
 netConns.push_back(
 wxString::Format( "%s.%.4s", refText, pinText ) );
 }
 
 // format it such that there are 6 net connections per line
 // which seems to be the standard everyone follows
 if( netConns .size() > 1 )
 {
 ret |= fprintf( f, "*SIGNAL* %s\n", TO_UTF8(netName) );
 int cnt = 0;
 for( wxString& netConn : netConns )
 {
 ret |= fputs( TO_UTF8( netConn ), f );
 if( cnt != 0 && cnt % 6 == 0 )
 {
 ret |= fputc( '\n', f );
 }
 else
 {
 ret |= fputc( ' ', f );
 }
 
 cnt++;
 }
 
 ret |= fputc( '\n', f );
 }
 }
 
 ret |= fprintf( f, "*END*\n" );
 
 return ret >= 0;
}