Add sim_lib callback to resolve embeded libs

Also teach parser to look for include directives in libraries

We get KiCad variable resolution in include pathnames for free.

Fixes https://gitlab.com/kicad/code/kicad/issues/13083

eeschema/sim/sim_lib_mgr.cpp

@@ -90,8 +90,39 @@ SIM_LIBRARY& SIM_LIB_MGR::SetLibrary( const wxString& aLibraryPath, REPORTER* aR
     // May throw an exception.
     wxString path = ResolveLibraryPath( aLibraryPath, m_project );
 
-    // May throw an exception.
+    std::function<std::string(const std::string&, const std::string&)> f2 =
-    std::unique_ptr<SIM_LIBRARY> library = SIM_LIBRARY::Create( path, aReporter );
+            [&]( const std::string& aLibPath, const std::string& aRelativeLib ) -> std::string
+        {
+        wxFileName testPath( aLibPath );
+        wxString fullPath( aLibPath );
+
+        if( !testPath.IsAbsolute() && !aRelativeLib.empty() )
+        {
+            wxString relLib( aRelativeLib );
+
+            try
+            {
+                relLib = ResolveLibraryPath( relLib, m_project );
+            }
+            catch( ... )
+            {}
+
+            wxFileName fn( relLib );
+
+            fullPath = testPath.GetAbsolutePath( fn.GetPath( true ) );
+        }
+
+        try
+        {
+            fullPath = ResolveLibraryPath( fullPath, m_project );
+        }
+        catch( ... )
+        {}
+
+        return fullPath.ToStdString();
+        };
+
+    std::unique_ptr<SIM_LIBRARY> library = SIM_LIBRARY::Create( path, aReporter, &f2 );
     
     Clear();
     m_libraries[path] = std::move( library );

eeschema/sim/sim_library.cpp

@@ -27,7 +27,8 @@
 #include <sim/sim_library_spice.h>
 
 
-std::unique_ptr<SIM_LIBRARY> SIM_LIBRARY::Create( const wxString& aFilePath, REPORTER* aReporter )
+std::unique_ptr<SIM_LIBRARY> SIM_LIBRARY::Create( const wxString &aFilePath, REPORTER *aReporter,
+        std::function<std::string( const std::string&, const std::string& )> *aResolver )
 {
     std::unique_ptr<SIM_LIBRARY> library;
 
@@ -37,6 +38,7 @@ std::unique_ptr<SIM_LIBRARY> SIM_LIBRARY::Create( const wxString& aFilePath, REP
         library = std::make_unique<SIM_LIBRARY_SPICE>();
 
     library->m_reporter = aReporter;
+    library->m_pathResolver = aResolver;
     library->ReadFile( std::string( aFilePath.c_str() ) );
     return library;
 }

eeschema/sim/sim_library.h

@@ -53,7 +53,8 @@ public:
      * @return The library loaded in a newly constructed object.
      */
     static std::unique_ptr<SIM_LIBRARY> Create( const wxString& aFilePath,
-                                                REPORTER* aReporter = nullptr );
+                                                REPORTER* aReporter = nullptr,
+                                                std::function<std::string(const std::string&, const std::string&)>* aResolver = nullptr);
 
     /**
      * Read library from a source file. Must be in the format appropriate to the subclass, e.g.
@@ -82,6 +83,8 @@ protected:
     std::vector<std::string>                m_modelNames;
     std::vector<std::unique_ptr<SIM_MODEL>> m_models;
 
+    std::function<std::string( const std::string&, const std::string& )>* m_pathResolver;
+
     std::string m_filePath;
 
     REPORTER* m_reporter = nullptr;

eeschema/sim/spice_library_parser.cpp

@@ -47,24 +47,25 @@ namespace SIM_LIBRARY_SPICE_PARSER
     template <> struct librarySelector<modelUnit> : std::true_type {};
     template <> struct librarySelector<modelName> : std::true_type {};
 
+    template <> struct librarySelector<dotInclude> : std::true_type {};
+    template <> struct librarySelector<dotIncludePathWithoutQuotes> : std::true_type {};
+    template <> struct librarySelector<dotIncludePathWithoutApostrophes> : std::true_type {};
+    template <> struct librarySelector<dotIncludePath> : std::true_type {};
+
     // For debugging.
     template <> struct librarySelector<unknownLine> : std::true_type {};
 };
 
 
-void SPICE_LIBRARY_PARSER::ReadFile( const std::string& aFilePath )
+void SPICE_LIBRARY_PARSER::readElement( const std::string &aFilePath )
 {
-    try
-    {
     tao::pegtl::file_input in( aFilePath );
-        auto root = tao::pegtl::parse_tree::parse<SIM_LIBRARY_SPICE_PARSER::libraryGrammar,
+    std::unique_ptr<tao::pegtl::parse_tree::node> root =
+                tao::pegtl::parse_tree::parse<SIM_LIBRARY_SPICE_PARSER::libraryGrammar,
                                               SIM_LIBRARY_SPICE_PARSER::librarySelector,
                                               tao::pegtl::nothing,
                                               SIM_LIBRARY_SPICE_PARSER::control>( in );
 
-        m_library.m_models.clear();
-        m_library.m_modelNames.clear();
-
     for( const auto& node : root->children )
     {
         if( node->is_type<SIM_LIBRARY_SPICE_PARSER::modelUnit>() )
@@ -79,6 +80,15 @@ void SPICE_LIBRARY_PARSER::ReadFile( const std::string& aFilePath )
                 DisplayErrorMessage( nullptr, e.What() );
             }
         }
+        else if( node->is_type<SIM_LIBRARY_SPICE_PARSER::dotInclude>() )
+        {
+            std::string lib = node->children.at( 0 )->string();
+
+            if( m_library.m_pathResolver )
+                lib = ( *m_library.m_pathResolver )( lib, aFilePath );
+
+            readElement( lib );
+        }
         else if( node->is_type<SIM_LIBRARY_SPICE_PARSER::unknownLine>() )
         {
             // Do nothing.
@@ -88,6 +98,17 @@ void SPICE_LIBRARY_PARSER::ReadFile( const std::string& aFilePath )
             wxFAIL_MSG( "Unhandled parse tree node" );
         }
     }
+}
+
+
+void SPICE_LIBRARY_PARSER::ReadFile( const std::string& aFilePath )
+{
+    m_library.m_models.clear();
+    m_library.m_modelNames.clear();
+
+    try
+    {
+        readElement( aFilePath );
     }
     catch( const std::filesystem::filesystem_error& e )
     {

eeschema/sim/spice_library_parser.h

@@ -29,11 +29,10 @@
 
 class SIM_LIBRARY_SPICE;
 
-
 class SPICE_LIBRARY_PARSER
 {
 public:
-    SPICE_LIBRARY_PARSER( SIM_LIBRARY_SPICE& aLibrary ) :
+    SPICE_LIBRARY_PARSER( SIM_LIBRARY_SPICE &aLibrary ) :
             m_library( aLibrary )
     {};
 
@@ -42,6 +41,9 @@ public:
 
     virtual void ReadFile( const std::string& aFilePath );
 
+protected:
+    void readElement( const std::string& aFilePath );
+
 private:
     SIM_LIBRARY_SPICE& m_library;
 };