project_file.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2020 CERN
 * Copyright The KiCad Developers, see AUTHORS.txt for contributors.
 * @author Jon Evans <[email protected]>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */
 
#include <project.h>
#include <project/component_class_settings.h>
#include <project/net_settings.h>
#include <project/tuning_profiles.h>
#include <settings/json_settings_internals.h>
#include <project/project_file.h>
#include <project/board_project_settings_params.h>
#include <settings/common_settings.h>
#include <settings/parameters.h>
#include <wildcards_and_files_ext.h>
#include <project/project_file.h>
#include <wx/config.h>
#include <wx/filename.h>
#include <wx/log.h>
 

const int projectFileSchemaVersion = 3;
 
 
PROJECT_FILE::PROJECT_FILE( const wxString& aFullPath ) :
        JSON_SETTINGS( aFullPath, SETTINGS_LOC::PROJECT, projectFileSchemaVersion ),
        m_ErcSettings( nullptr ),
        m_SchematicSettings( nullptr ),
        m_BoardSettings(),
        m_sheets(),
        m_topLevelSheets(),
        m_boards(),
        m_project( nullptr ),
        m_wasMigrated( false )
{
    // Keep old files around
    m_deleteLegacyAfterMigration = false;
 
    m_params.emplace_back( new PARAM_LIST<FILE_INFO_PAIR>( "sheets", &m_sheets, {} ) );
 
    m_params.emplace_back( new PARAM_LIST<TOP_LEVEL_SHEET_INFO>( "schematic.top_level_sheets",
            &m_topLevelSheets, {} ) );
 
    m_params.emplace_back( new PARAM_LIST<FILE_INFO_PAIR>( "boards", &m_boards, {} ) );
 
    m_params.emplace_back( new PARAM_WXSTRING_MAP( "text_variables",
            &m_TextVars, {}, false, true /* array behavior, even though stored as a map */ ) );
 
    m_params.emplace_back( new PARAM_LIST<wxString>( "libraries.pinned_symbol_libs",
            &m_PinnedSymbolLibs, {} ) );
 
    m_params.emplace_back( new PARAM_LIST<wxString>( "libraries.pinned_footprint_libs",
            &m_PinnedFootprintLibs, {} ) );
 
    m_params.emplace_back( new PARAM_PATH_LIST( "cvpcb.equivalence_files",
            &m_EquivalenceFiles, {} ) );
 
    m_params.emplace_back( new PARAM_PATH( "pcbnew.page_layout_descr_file",
            &m_BoardDrawingSheetFile, "" ) );
 
    m_params.emplace_back( new PARAM_PATH( "pcbnew.last_paths.netlist",
            &m_PcbLastPath[LAST_PATH_NETLIST], "" ) );
 
    m_params.emplace_back( new PARAM_PATH( "pcbnew.last_paths.idf",
            &m_PcbLastPath[LAST_PATH_IDF], "" ) );
 
    m_params.emplace_back( new PARAM_PATH( "pcbnew.last_paths.vrml",
            &m_PcbLastPath[LAST_PATH_VRML], "" ) );
 
    m_params.emplace_back( new PARAM_PATH( "pcbnew.last_paths.specctra_dsn",
            &m_PcbLastPath[LAST_PATH_SPECCTRADSN], "" ) );
 
    m_params.emplace_back( new PARAM_PATH( "pcbnew.last_paths.plot",
            &m_PcbLastPath[LAST_PATH_PLOT], "" ) );
 
    m_params.emplace_back( new PARAM<wxString>( "schematic.legacy_lib_dir",
            &m_LegacyLibDir, "" ) );
 
    m_params.emplace_back( new PARAM_LAMBDA<nlohmann::json>( "schematic.legacy_lib_list",
            [&]() -> nlohmann::json
            {
                nlohmann::json ret = nlohmann::json::array();
 
                for( const wxString& libName : m_LegacyLibNames )
                    ret.push_back( libName );
 
                return ret;
            },
            [&]( const nlohmann::json& aJson )
            {
                if( aJson.empty() || !aJson.is_array() )
                    return;
 
                m_LegacyLibNames.clear();
 
                for( const nlohmann::json& entry : aJson )
                    m_LegacyLibNames.push_back( entry.get<wxString>() );
            }, {} ) );
 
    m_params.emplace_back( new PARAM_LAMBDA<nlohmann::json>( "schematic.bus_aliases",
            [&]() -> nlohmann::json
            {
                nlohmann::json ret = nlohmann::json::object();
 
                for( const auto& alias : m_BusAliases )
                {
                    nlohmann::json members = nlohmann::json::array();
 
                    for( const wxString& member : alias.second )
                        members.push_back( member );
 
                    ret[ alias.first.ToStdString() ] = members;
                }
 
                return ret;
            },
            [&]( const nlohmann::json& aJson )
            {
                if( aJson.empty() || !aJson.is_object() )
                    return;
 
                m_BusAliases.clear();
 
                for( auto it = aJson.begin(); it != aJson.end(); ++it )
                {
                    const nlohmann::json& membersJson = it.value();
 
                    if( !membersJson.is_array() )
                        continue;
 
                    std::vector<wxString> members;
 
                    for( const nlohmann::json& entry : membersJson )
                    {
                        if( entry.is_string() )
                        {
                            wxString member = entry.get<wxString>().Strip( wxString::both );
 
                            if( !member.IsEmpty() )
                                members.push_back( member );
                        }
                    }
 
                    wxString name = wxString::FromUTF8( it.key().c_str() ).Strip( wxString::both );
 
                    if( !name.IsEmpty() )
                        m_BusAliases.emplace( name, std::move( members ) );
                }
            }, {} ) );
 
    m_NetSettings = std::make_shared<NET_SETTINGS>( this, "net_settings" );
 
    m_ComponentClassSettings =
            std::make_shared<COMPONENT_CLASS_SETTINGS>( this, "component_class_settings" );
 
    m_tuningProfileParameters = std::make_shared<TUNING_PROFILES>( this, "tuning_profiles" );
 
    m_params.emplace_back( new PARAM_LAYER_PRESET( "board.layer_presets", &m_LayerPresets ) );
 
    m_params.emplace_back( new PARAM_VIEWPORT( "board.viewports", &m_Viewports ) );
 
    m_params.emplace_back( new PARAM_VIEWPORT3D( "board.3dviewports", &m_Viewports3D ) );
 
    m_params.emplace_back( new PARAM_LAYER_PAIRS( "board.layer_pairs", m_LayerPairInfos ) );
 
    m_params.emplace_back( new PARAM<wxString>( "board.ipc2581.internal_id",
            &m_IP2581Bom.id, wxEmptyString ) );
 
    m_params.emplace_back( new PARAM<wxString>( "board.ipc2581.mpn",
            &m_IP2581Bom.MPN, wxEmptyString ) );
 
    m_params.emplace_back( new PARAM<wxString>( "board.ipc2581.mfg",
            &m_IP2581Bom.mfg, wxEmptyString ) );
 
    m_params.emplace_back( new PARAM<wxString>( "board.ipc2581.distpn",
            &m_IP2581Bom.distPN, wxEmptyString ) );
 
    m_params.emplace_back( new PARAM<wxString>( "board.ipc2581.dist",
            &m_IP2581Bom.dist, wxEmptyString ) );
 
    m_params.emplace_back( new PARAM<wxString>( "board.ipc2581.bom_rev",
            &m_IP2581Bom.bomRev, wxEmptyString ) );
 
    m_params.emplace_back( new PARAM<wxString>( "board.ipc2581.sch_revision",
            &m_IP2581Bom.schRevision, wxEmptyString ) );
 
 
    registerMigration( 1, 2, std::bind( &PROJECT_FILE::migrateSchema1To2, this ) );
    registerMigration( 2, 3, std::bind( &PROJECT_FILE::migrateSchema2To3, this ) );
}
 
 
bool PROJECT_FILE::migrateSchema1To2()
{
    auto p( "/board/layer_presets"_json_pointer );
 
    if( !m_internals->contains( p ) || !m_internals->at( p ).is_array() )
        return true;
 
    nlohmann::json& presets = m_internals->at( p );
 
    for( nlohmann::json& entry : presets )
        PARAM_LAYER_PRESET::MigrateToV9Layers( entry );
 
    m_wasMigrated = true;
 
    return true;
}
 
 
bool PROJECT_FILE::migrateSchema2To3()
{
    auto p( "/board/layer_presets"_json_pointer );
 
    if( !m_internals->contains( p ) || !m_internals->at( p ).is_array() )
        return true;
 
    nlohmann::json& presets = m_internals->at( p );
 
    for( nlohmann::json& entry : presets )
        PARAM_LAYER_PRESET::MigrateToNamedRenderLayers( entry );
 
    m_wasMigrated = true;
 
    return true;
}
 
 
bool PROJECT_FILE::MigrateFromLegacy( wxConfigBase* aCfg )
{
    bool     ret = true;
    wxString str;
    long     index = 0;
 
    std::set<wxString> group_blacklist;
 
    // Legacy files don't store board info; they assume board matches project name
    // We will leave m_boards empty here so it can be populated with other code
 
    // First handle migration of data that will be stored locally in this object
 
    auto loadPinnedLibs =
            [&]( const std::string& aDest )
            {
                int      libIndex = 1;
                wxString libKey   = wxT( "PinnedItems" );
                libKey << libIndex;
 
                nlohmann::json libs = nlohmann::json::array();
 
                while( aCfg->Read( libKey, &str ) )
                {
                    libs.push_back( str );
 
                    aCfg->DeleteEntry( libKey, true );
 
                    libKey = wxT( "PinnedItems" );
                    libKey << ++libIndex;
                }
 
                Set( aDest, libs );
            };
 
    aCfg->SetPath( wxT( "/LibeditFrame" ) );
    loadPinnedLibs( "libraries.pinned_symbol_libs" );
 
    aCfg->SetPath( wxT( "/ModEditFrame" ) );
    loadPinnedLibs( "libraries.pinned_footprint_libs" );
 
    aCfg->SetPath( wxT( "/cvpcb/equfiles" ) );
 
    {
        int      eqIdx = 1;
        wxString eqKey = wxT( "EquName" );
        eqKey << eqIdx;
 
        nlohmann::json eqs = nlohmann::json::array();
 
        while( aCfg->Read( eqKey, &str ) )
        {
            eqs.push_back( str );
 
            eqKey = wxT( "EquName" );
            eqKey << ++eqIdx;
        }
 
        Set( "cvpcb.equivalence_files", eqs );
    }
 
    // All CvPcb params that we want to keep have been migrated above
    group_blacklist.insert( wxT( "/cvpcb" ) );
 
    aCfg->SetPath( wxT( "/eeschema" ) );
    fromLegacyString( aCfg, "LibDir", "schematic.legacy_lib_dir" );
 
    aCfg->SetPath( wxT( "/eeschema/libraries" ) );
 
    {
        int      libIdx = 1;
        wxString libKey = wxT( "LibName" );
        libKey << libIdx;
 
        nlohmann::json libs = nlohmann::json::array();
 
        while( aCfg->Read( libKey, &str ) )
        {
            libs.push_back( str );
 
            libKey = wxT( "LibName" );
            libKey << ++libIdx;
        }
 
        Set( "schematic.legacy_lib_list", libs );
    }
 
    group_blacklist.insert( wxT( "/eeschema" ) );
 
    aCfg->SetPath( wxT( "/text_variables" ) );
 
    {
        int      txtIdx = 1;
        wxString txtKey;
        txtKey << txtIdx;
 
        nlohmann::json vars = nlohmann::json();
 
        while( aCfg->Read( txtKey, &str ) )
        {
            wxArrayString tokens = wxSplit( str, ':' );
 
            if( tokens.size() == 2 )
                vars[ tokens[0].ToStdString() ] = tokens[1];
 
            txtKey.clear();
            txtKey << ++txtIdx;
        }
 
        Set( "text_variables", vars );
    }
 
    group_blacklist.insert( wxT( "/text_variables" ) );
 
    aCfg->SetPath( wxT( "/schematic_editor" ) );
 
    fromLegacyString( aCfg, "PageLayoutDescrFile",     "schematic.page_layout_descr_file" );
    fromLegacyString( aCfg, "PlotDirectoryName",       "schematic.plot_directory" );
    fromLegacyString( aCfg, "NetFmtName",              "schematic.net_format_name" );
    fromLegacy<bool>( aCfg, "SpiceAjustPassiveValues", "schematic.spice_adjust_passive_values" );
    fromLegacy<int>(  aCfg, "SubpartIdSeparator",      "schematic.subpart_id_separator" );
    fromLegacy<int>(  aCfg, "SubpartFirstId",          "schematic.subpart_first_id" );
 
    fromLegacy<int>( aCfg, "LineThickness",            "schematic.drawing.default_line_thickness" );
    fromLegacy<int>( aCfg, "WireThickness",            "schematic.drawing.default_wire_thickness" );
    fromLegacy<int>( aCfg, "BusThickness",             "schematic.drawing.default_bus_thickness" );
    fromLegacy<int>( aCfg, "LabSize",                  "schematic.drawing.default_text_size" );
 
    if( !fromLegacy<int>( aCfg, "PinSymbolSize",       "schematic.drawing.pin_symbol_size" ) )
    {
        // Use the default symbol size algorithm of Eeschema V5 (based on pin name/number size)
        Set( "schematic.drawing.pin_symbol_size", 0 );
    }
 
    fromLegacy<int>( aCfg, "JunctionSize",             "schematic.drawing.default_junction_size" );
 
    fromLegacyString( aCfg, "FieldNameTemplates",    "schematic.drawing.field_names" );
 
    if( !fromLegacy<double>( aCfg, "TextOffsetRatio",  "schematic.drawing.text_offset_ratio" ) )
    {
        // Use the spacing of Eeschema V5
        Set( "schematic.drawing.text_offset_ratio", 0.08 );
        Set( "schematic.drawing.label_size_ratio", 0.25 );
    }
 
    // All schematic_editor keys we keep are migrated above
    group_blacklist.insert( wxT( "/schematic_editor" ) );
 
    aCfg->SetPath( wxT( "/pcbnew" ) );
 
    fromLegacyString( aCfg, "PageLayoutDescrFile",       "pcbnew.page_layout_descr_file" );
    fromLegacyString( aCfg, "LastNetListRead",           "pcbnew.last_paths.netlist" );
    fromLegacyString( aCfg, "LastSTEPExportPath",        "pcbnew.last_paths.step" );
    fromLegacyString( aCfg, "LastIDFExportPath",         "pcbnew.last_paths.idf" );
    fromLegacyString( aCfg, "LastVRMLExportPath",        "pcbnew.last_paths.vmrl" );
    fromLegacyString( aCfg, "LastSpecctraDSNExportPath", "pcbnew.last_paths.specctra_dsn" );
    fromLegacyString( aCfg, "LastGenCADExportPath",      "pcbnew.last_paths.gencad" );
 
    std::string bp = "board.design_settings.";
 
    {
        int      idx = 1;
        wxString key = wxT( "DRCExclusion" );
        key << idx;
 
        nlohmann::json exclusions = nlohmann::json::array();
 
        while( aCfg->Read( key, &str ) )
        {
            exclusions.push_back( str );
 
            key = wxT( "DRCExclusion" );
            key << ++idx;
        }
 
        Set( bp + "drc_exclusions", exclusions );
    }
 
    fromLegacy<bool>( aCfg,   "AllowMicroVias",  bp + "rules.allow_microvias" );
    fromLegacy<bool>( aCfg,   "AllowBlindVias",  bp + "rules.allow_blind_buried_vias" );
    fromLegacy<double>( aCfg, "MinClearance",    bp + "rules.min_clearance" );
    fromLegacy<double>( aCfg, "MinTrackWidth",   bp + "rules.min_track_width" );
    fromLegacy<double>( aCfg, "MinViaAnnulus",   bp + "rules.min_via_annulus" );
    fromLegacy<double>( aCfg, "MinViaDiameter",  bp + "rules.min_via_diameter" );
 
    if( !fromLegacy<double>( aCfg, "MinThroughDrill", bp + "rules.min_through_hole_diameter" ) )
        fromLegacy<double>( aCfg, "MinViaDrill", bp + "rules.min_through_hole_diameter" );
 
    fromLegacy<double>( aCfg, "MinMicroViaDiameter",  bp + "rules.min_microvia_diameter" );
    fromLegacy<double>( aCfg, "MinMicroViaDrill",     bp + "rules.min_microvia_drill" );
    fromLegacy<double>( aCfg, "MinHoleToHole",        bp + "rules.min_hole_to_hole" );
    fromLegacy<double>( aCfg, "CopperEdgeClearance",  bp + "rules.min_copper_edge_clearance" );
    fromLegacy<double>( aCfg, "SolderMaskClearance",  bp + "rules.solder_mask_clearance" );
    fromLegacy<double>( aCfg, "SolderMaskMinWidth",   bp + "rules.solder_mask_min_width" );
    fromLegacy<double>( aCfg, "SolderPasteClearance", bp + "rules.solder_paste_clearance" );
    fromLegacy<double>( aCfg, "SolderPasteRatio",     bp + "rules.solder_paste_margin_ratio" );
 
    if( !fromLegacy<double>( aCfg, "SilkLineWidth", bp + "defaults.silk_line_width" ) )
        fromLegacy<double>( aCfg, "ModuleOutlineThickness", bp + "defaults.silk_line_width" );
 
    if( !fromLegacy<double>( aCfg, "SilkTextSizeV", bp + "defaults.silk_text_size_v" ) )
        fromLegacy<double>( aCfg, "ModuleTextSizeV", bp + "defaults.silk_text_size_v" );
 
    if( !fromLegacy<double>( aCfg, "SilkTextSizeH", bp + "defaults.silk_text_size_h" ) )
        fromLegacy<double>( aCfg, "ModuleTextSizeH", bp + "defaults.silk_text_size_h" );
 
    if( !fromLegacy<double>( aCfg, "SilkTextSizeThickness", bp + "defaults.silk_text_thickness" ) )
        fromLegacy<double>( aCfg, "ModuleTextSizeThickness", bp + "defaults.silk_text_thickness" );
 
    fromLegacy<bool>( aCfg, "SilkTextItalic",   bp + "defaults.silk_text_italic" );
    fromLegacy<bool>( aCfg, "SilkTextUpright",  bp + "defaults.silk_text_upright" );
 
    if( !fromLegacy<double>( aCfg, "CopperLineWidth", bp + "defaults.copper_line_width" ) )
        fromLegacy<double>( aCfg, "DrawSegmentWidth", bp + "defaults.copper_line_width" );
 
    if( !fromLegacy<double>( aCfg, "CopperTextSizeV", bp + "defaults.copper_text_size_v" ) )
        fromLegacy<double>( aCfg, "PcbTextSizeV", bp + "defaults.copper_text_size_v" );
 
    if( !fromLegacy<double>( aCfg, "CopperTextSizeH", bp + "defaults.copper_text_size_h" ) )
        fromLegacy<double>( aCfg, "PcbTextSizeH", bp + "defaults.copper_text_size_h" );
 
    if( !fromLegacy<double>( aCfg, "CopperTextThickness", bp + "defaults.copper_text_thickness" ) )
        fromLegacy<double>( aCfg, "PcbTextThickness", bp + "defaults.copper_text_thickness" );
 
    fromLegacy<bool>( aCfg, "CopperTextItalic",   bp + "defaults.copper_text_italic" );
    fromLegacy<bool>( aCfg, "CopperTextUpright",  bp + "defaults.copper_text_upright" );
 
    if( !fromLegacy<double>( aCfg, "EdgeCutLineWidth", bp + "defaults.board_outline_line_width" ) )
        fromLegacy<double>( aCfg, "BoardOutlineThickness",
                            bp + "defaults.board_outline_line_width" );
 
    fromLegacy<double>( aCfg, "CourtyardLineWidth",   bp + "defaults.courtyard_line_width" );
 
    fromLegacy<double>( aCfg, "FabLineWidth",         bp + "defaults.fab_line_width" );
    fromLegacy<double>( aCfg, "FabTextSizeV",         bp + "defaults.fab_text_size_v" );
    fromLegacy<double>( aCfg, "FabTextSizeH",         bp + "defaults.fab_text_size_h" );
    fromLegacy<double>( aCfg, "FabTextSizeThickness", bp + "defaults.fab_text_thickness" );
    fromLegacy<bool>(   aCfg, "FabTextItalic",        bp + "defaults.fab_text_italic" );
    fromLegacy<bool>(   aCfg, "FabTextUpright",       bp + "defaults.fab_text_upright" );
 
    if( !fromLegacy<double>( aCfg, "OthersLineWidth", bp + "defaults.other_line_width" ) )
        fromLegacy<double>( aCfg, "ModuleOutlineThickness", bp + "defaults.other_line_width" );
 
    fromLegacy<double>( aCfg, "OthersTextSizeV",         bp + "defaults.other_text_size_v" );
    fromLegacy<double>( aCfg, "OthersTextSizeH",         bp + "defaults.other_text_size_h" );
    fromLegacy<double>( aCfg, "OthersTextSizeThickness", bp + "defaults.other_text_thickness" );
    fromLegacy<bool>(   aCfg, "OthersTextItalic",        bp + "defaults.other_text_italic" );
    fromLegacy<bool>(   aCfg, "OthersTextUpright",       bp + "defaults.other_text_upright" );
 
    fromLegacy<int>( aCfg, "DimensionUnits",     bp + "defaults.dimension_units" );
    fromLegacy<int>( aCfg, "DimensionPrecision", bp + "defaults.dimension_precision" );
 
    std::string sev = bp + "rule_severities";
 
    fromLegacy<bool>( aCfg, "RequireCourtyardDefinitions", sev + "legacy_no_courtyard_defined" );
 
    fromLegacy<bool>( aCfg, "ProhibitOverlappingCourtyards", sev + "legacy_courtyards_overlap" );
 
    {
        int      idx     = 1;
        wxString keyBase = "TrackWidth";
        wxString key     = keyBase;
        double   val;
 
        nlohmann::json widths = nlohmann::json::array();
 
        key << idx;
 
        while( aCfg->Read( key, &val ) )
        {
            widths.push_back( val );
            key = keyBase;
            key << ++idx;
        }
 
        Set( bp + "track_widths", widths );
    }
 
    {
        int      idx     = 1;
        wxString keyBase = "ViaDiameter";
        wxString key     = keyBase;
        double   diameter;
        double   drill   = 1.0;
 
        nlohmann::json vias = nlohmann::json::array();
 
        key << idx;
 
        while( aCfg->Read( key, &diameter ) )
        {
            key = "ViaDrill";
            aCfg->Read( key << idx, &drill );
 
            nlohmann::json via = { { "diameter", diameter }, { "drill", drill } };
            vias.push_back( via );
 
            key = keyBase;
            key << ++idx;
        }
 
        Set( bp + "via_dimensions", vias );
    }
 
    {
        int      idx     = 1;
        wxString keyBase = "dPairWidth";
        wxString key     = keyBase;
        double   width;
        double   gap     = 1.0;
        double   via_gap = 1.0;
 
        nlohmann::json pairs = nlohmann::json::array();
 
        key << idx;
 
        while( aCfg->Read( key, &width ) )
        {
            key = "dPairGap";
            aCfg->Read( key << idx, &gap );
 
            key = "dPairViaGap";
            aCfg->Read( key << idx, &via_gap );
 
            nlohmann::json pair = { { "width", width }, { "gap", gap }, { "via_gap", via_gap } };
            pairs.push_back( pair );
 
            key = keyBase;
            key << ++idx;
        }
 
        Set( bp + "diff_pair_dimensions",  pairs );
    }
 
    group_blacklist.insert( wxT( "/pcbnew" ) );
 
    // General group is unused these days, we can throw it away
    group_blacklist.insert( wxT( "/general" ) );
 
    // Next load sheet names and put all other legacy data in the legacy dict
    aCfg->SetPath( wxT( "/" ) );
 
    auto loadSheetNames =
            [&]() -> bool
            {
                int            sheet = 1;
                wxString       entry;
                nlohmann::json arr   = nlohmann::json::array();
 
                wxLogTrace( traceSettings, wxT( "Migrating sheet names" ) );
 
                aCfg->SetPath( wxT( "/sheetnames" ) );
 
                while( aCfg->Read( wxString::Format( "%d", sheet++ ), &entry ) )
                {
                    wxArrayString tokens = wxSplit( entry, ':' );
 
                    if( tokens.size() == 2 )
                    {
                        wxLogTrace( traceSettings, wxT( "%d: %s = %s" ), sheet, tokens[0],
                                    tokens[1] );
                        arr.push_back( nlohmann::json::array( { tokens[0], tokens[1] } ) );
                    }
                }
 
                Set( "sheets", arr );
 
                aCfg->SetPath( "/" );
 
                return true;
            };
 
    std::vector<wxString> groups;
 
    groups.emplace_back( wxEmptyString );
 
    auto loadLegacyPairs =
            [&]( const std::string& aGroup ) -> bool
            {
                wxLogTrace( traceSettings, wxT( "Migrating group %s" ), aGroup );
                bool     success = true;
                wxString keyStr;
                wxString val;
 
                index = 0;
 
                while( aCfg->GetNextEntry( keyStr, index ) )
                {
                    if( !aCfg->Read( keyStr, &val ) )
                        continue;
 
                    std::string key( keyStr.ToUTF8() );
 
                    wxLogTrace( traceSettings, wxT( "    %s = %s" ), key, val );
 
                    try
                    {
                        Set( "legacy." + aGroup + "." + key, val );
                    }
                    catch( ... )
                    {
                        success = false;
                    }
                }
 
                return success;
            };
 
    for( size_t i = 0; i < groups.size(); i++ )
    {
        aCfg->SetPath( groups[i] );
 
        if( groups[i] == wxT( "/sheetnames" ) )
        {
            ret |= loadSheetNames();
            continue;
        }
 
        aCfg->DeleteEntry( wxT( "last_client" ), true );
        aCfg->DeleteEntry( wxT( "update" ), true );
        aCfg->DeleteEntry( wxT( "version" ), true );
 
        ret &= loadLegacyPairs( groups[i].ToStdString() );
 
        index = 0;
 
        while( aCfg->GetNextGroup( str, index ) )
        {
            wxString group = groups[i] + "/" + str;
 
            if( !group_blacklist.count( group ) )
                groups.emplace_back( group );
        }
 
        aCfg->SetPath( "/" );
    }
 
    return ret;
}
 
 
bool PROJECT_FILE::LoadFromFile( const wxString& aDirectory )
{
    bool success = JSON_SETTINGS::LoadFromFile( aDirectory );
 
    if( success )
    {
        // Migrate from old single-root format to top_level_sheets format
        if( m_topLevelSheets.empty() && m_project )
        {
            // Create a default top-level sheet entry based on the project name
            wxString projectName = m_project->GetProjectName();
 
            TOP_LEVEL_SHEET_INFO defaultSheet;
            defaultSheet.uuid = niluuid;  // Use niluuid for the first/default sheet
            defaultSheet.name = projectName;
            defaultSheet.filename = projectName + ".kicad_sch";
 
            m_topLevelSheets.push_back( std::move( defaultSheet ) );
 
            // Mark as migrated so it will be saved with the new format
            m_wasMigrated = true;
 
            wxLogTrace( traceSettings, wxT( "PROJECT_FILE: Migrated old single-root format to top_level_sheets" ) );
        }
 
        // When a project is created from a template, the top_level_sheets entries may
        // still reference the template's schematic filenames rather than the new project's.
        // The template copy renames files on disk but doesn't update the .kicad_pro content.
        // Detect this and fix the references so the schematic can be found.
        if( !m_topLevelSheets.empty() && m_project )
        {
            wxString projectPath = m_project->GetProjectPath();
            wxString projectName = m_project->GetProjectName();
 
            for( TOP_LEVEL_SHEET_INFO& sheetInfo : m_topLevelSheets )
            {
                wxFileName referencedFile( projectPath, sheetInfo.filename );
 
                if( referencedFile.FileExists() )
                    continue;
 
                // Try the project-name-based filename
                wxString expectedFile =
                        projectName + wxS( "." ) + FILEEXT::KiCadSchematicFileExtension;
 
                wxFileName candidateFile( projectPath, expectedFile );
 
                if( candidateFile.FileExists() )
                {
                    wxLogTrace( traceSettings,
                                wxT( "PROJECT_FILE: Fixing stale top_level_sheets reference "
                                     "'%s' -> '%s'" ),
                                sheetInfo.filename, expectedFile );
 
                    sheetInfo.filename = expectedFile;
                    sheetInfo.name = projectName;
                    m_wasMigrated = true;
                }
            }
        }
    }
 
    return success;
}
 
 
bool PROJECT_FILE::SaveToFile( const wxString& aDirectory, bool aForce )
{
    wxASSERT( m_project );
 
    Set( "meta.filename", m_project->GetProjectName() + "." + FILEEXT::ProjectFileExtension );
 
    // Even if parameters were not modified, we should resave after migration
    bool force = aForce || m_wasMigrated;
 
    // If we're actually going ahead and doing the save, the flag that keeps code from doing the
    // save should be cleared at this.
    m_wasMigrated = false;
 
    return JSON_SETTINGS::SaveToFile( aDirectory, force );
}
 
 
bool PROJECT_FILE::SaveAs( const wxString& aDirectory, const wxString& aFile )
{
    wxFileName oldFilename( GetFilename() );
    wxString   oldProjectName = oldFilename.GetName();
    wxString   oldProjectPath = oldFilename.GetPath();
 
    Set( "meta.filename", aFile + "." + FILEEXT::ProjectFileExtension );
    SetFilename( aFile );
 
    auto updatePath =
            [&]( wxString& aPath )
            {
                if( aPath.StartsWith( oldProjectName + wxS( "." ) ) )
                    aPath.Replace( oldProjectName, aFile, false );
                else if( aPath.StartsWith( oldProjectPath + wxS( "/" ) ) )
                    aPath.Replace( oldProjectPath, aDirectory, false );
            };
 
    updatePath( m_BoardDrawingSheetFile );
 
    for( int ii = LAST_PATH_FIRST; ii < (int) LAST_PATH_SIZE; ++ii )
        updatePath( m_PcbLastPath[ ii ] );
 
    auto updatePathByPtr =
            [&]( const std::string& aPtr )
            {
                if( std::optional<wxString> path = Get<wxString>( aPtr ) )
                {
                    updatePath( path.value() );
                    Set( aPtr, path.value() );
                }
            };
 
    updatePathByPtr( "schematic.page_layout_descr_file" );
    updatePathByPtr( "schematic.plot_directory" );
    updatePathByPtr( "schematic.ngspice.workbook_filename" );
    updatePathByPtr( "pcbnew.page_layout_descr_file" );
 
    for( auto& sheetInfo : m_topLevelSheets )
    {
        updatePath( sheetInfo.filename );
 
        // Also update the display name if it matches the old project name
        if( sheetInfo.name == oldProjectName )
            sheetInfo.name = aFile;
    }
 
    // If we're actually going ahead and doing the save, the flag that keeps code from doing the save
    // should be cleared at this point
    m_wasMigrated = false;
 
    // While performing Save As, we have already checked that we can write to the directory
    // so don't carry the previous flag
    SetReadOnly( false );
    return JSON_SETTINGS::SaveToFile( aDirectory, true );
}
 
 
wxString PROJECT_FILE::getFileExt() const
{
    return FILEEXT::ProjectFileExtension;
}
 
 
wxString PROJECT_FILE::getLegacyFileExt() const
{
    return FILEEXT::LegacyProjectFileExtension;
}
 
 
void to_json( nlohmann::json& aJson, const FILE_INFO_PAIR& aPair )
{
    aJson = nlohmann::json::array( { aPair.first.AsString().ToUTF8(), aPair.second.ToUTF8() } );
}
 
 
void from_json( const nlohmann::json& aJson, FILE_INFO_PAIR& aPair )
{
    wxCHECK( aJson.is_array() && aJson.size() == 2, /* void */ );
    aPair.first  = KIID( wxString( aJson[0].get<std::string>().c_str(), wxConvUTF8 ) );
    aPair.second = wxString( aJson[1].get<std::string>().c_str(), wxConvUTF8 );
}
 
 
void to_json( nlohmann::json& aJson, const TOP_LEVEL_SHEET_INFO& aInfo )
{
    aJson = nlohmann::json::object();
    aJson["uuid"] = aInfo.uuid.AsString().ToUTF8();
    aJson["name"] = aInfo.name.ToUTF8();
    aJson["filename"] = aInfo.filename.ToUTF8();
}
 
 
void from_json( const nlohmann::json& aJson, TOP_LEVEL_SHEET_INFO& aInfo )
{
    wxCHECK( aJson.is_object(), /* void */ );
 
    if( aJson.contains( "uuid" ) )
        aInfo.uuid = KIID( wxString( aJson["uuid"].get<std::string>().c_str(), wxConvUTF8 ) );
 
    if( aJson.contains( "name" ) )
        aInfo.name = wxString( aJson["name"].get<std::string>().c_str(), wxConvUTF8 );
 
    if( aJson.contains( "filename" ) )
        aInfo.filename = wxString( aJson["filename"].get<std::string>().c_str(), wxConvUTF8 );
}