IMporter: fix lookup for tokens during inmemory imports.

code/BaseImporter.cpp

@@ -178,9 +178,17 @@ void BaseImporter::GetExtensionList(std::set<std::string>& extensions)
         }
         *cur2 = '\0';
 
+        std::string token;
         for (unsigned int i = 0; i < numTokens;++i) {
-            ai_assert(NULL != tokens[i]);
-            const char* r = strstr(buffer,tokens[i]);
+            ai_assert( nullptr != tokens[i] );
+            size_t len( strlen( tokens[ i ] ) );
+            token.clear();
+            const char *ptr( tokens[ i ] );
+            for ( size_t tokIdx = 0; tokIdx < len; ++tokIdx ) {
+                token.push_back( tolower( *ptr ) );
+                ++ptr;
+            }
+            const char* r = strstr( buffer, token.c_str() );
             if( !r ) {
                 continue;
             }

code/Importer/IFC/IFCLoader.cpp

@@ -141,7 +141,8 @@ bool IFCImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler, bool
         // it is only unambiguous as long as we don't support any further
         // file formats with STEP as their encoding.
         const char* tokens[] = {"ISO-10303-21"};
-        return SearchFileHeaderForToken(pIOHandler,pFile,tokens,1);
+        const bool found( SearchFileHeaderForToken( pIOHandler, pFile, tokens, 1 ) );
+        return found;
     }
     return false;
 }

test/unit/utIFCImportExport.cpp

@@ -62,3 +62,23 @@ public:
 TEST_F( utIFCImportExport, importIFCFromFileTest ) {
     EXPECT_TRUE( importerTest() );
 }
+
+TEST_F( utIFCImportExport, importComplextypeAsColor ) {
+    std::string asset =
+        "ISO-10303-21;\n"
+        "HEADER;\n"
+        "FILE_DESCRIPTION( ( 'ViewDefinition [CoordinationView, SpaceBoundary2ndLevelAddOnView]', 'Option [Filter: ]' ), '2;1' );\n"
+        "FILE_NAME( 'S:\\[IFC]\\[COMPLETE-BUILDINGS]\\FZK-MODELS\\FZK-Haus\\ArchiCAD-14\\AC14-FZK-Haus.ifc', '2010-10-07T13:40:52', ( 'Architect' ), ( 'Building Designer Office' ), 'PreProc - EDM 5.0', 'ArchiCAD 14.00 Release 1. Windows Build Number of the Ifc 2x3 interface: 3427', 'The authorising person' );\n"
+        "FILE_SCHEMA( ( 'IFC2X3' ) );\n"
+        "ENDSEC;\n"
+        "\n"
+        "DATA;\n"
+        "#1 = IFCORGANIZATION( 'GS', 'Graphisoft', 'Graphisoft', $, $ );\n"
+        "#2 = IFCPROPERTYSINGLEVALUE( 'Red', $, IFCINTEGER( 255 ), $ );\n"
+        "#3 = IFCPROPERTYSINGLEVALUE( 'Green', $, IFCINTEGER( 255 ), $ );\n"
+        "#4 = IFCPROPERTYSINGLEVALUE( 'Blue', $, IFCINTEGER( 255 ), $ );\n"
+        "#5 = IFCCOMPLEXPROPERTY( 'Color', $, 'Color', ( #19, #20, #21 ) );\n";
+    Assimp::Importer importer;
+    const aiScene *scene = importer.ReadFileFromMemory( asset.c_str(), asset.size(), 0 );
+
+}