IfcConvert Windows unicode support (#258)

src/ifcconvert/ColladaSerializer.cpp

@@ -32,6 +32,8 @@
 #include <string>
 #include <cmath>
 
+#include "../ifcparse/utils.h"
+
 using namespace IfcSchema;
 
 static std::string& collada_id(std::string& s)

src/ifcconvert/ColladaSerializer.h

@@ -198,7 +198,7 @@ private:
 		ColladaExporter(const std::string& scene_name, const std::string& fn, ColladaSerializer *_serializer,
             bool double_precision)
             : filename(fn)
-            , stream(filename, double_precision)
+            , stream(COLLADASW::NativeString(filename.c_str(), COLLADASW::NativeString::ENCODING_UTF8), double_precision)
 			, scene(scene_name, stream, _serializer)
 			, materials(stream, _serializer)
 			, geometries(stream, _serializer)

src/ifcconvert/IfcConvert.cpp

@@ -36,6 +36,8 @@
 #include "../ifcgeom/IfcGeomIterator.h"
 #include "../ifcgeom/IfcGeomRenderStyles.h"
 
+#include "../ifcparse/utils.h"
+
 #include <IGESControl_Controller.hxx>
 #include <Standard_Version.hxx>
 
@@ -51,6 +53,23 @@
 #include <vld.h>
 #endif
 
+#ifdef _MSC_VER
+#include <io.h>
+#include <fcntl.h>
+// C++11 header:
+#include <random>
+#endif
+
+#if defined(_MSC_VER) && defined(_UNICODE)
+typedef std::wstring path_t;
+static std::wostream& cout_ = std::wcout;
+static std::wostream& cerr_ = std::wcerr;
+#else
+typedef std::string path_t;
+static std::ostream& cout_ = std::cout;
+static std::ostream& cerr_ = std::cerr;
+#endif
+
 const std::string DEFAULT_EXTENSION = "obj";
 const std::string TEMP_FILE_EXTENSION = ".tmp";
 
@@ -58,12 +77,12 @@ namespace po = boost::program_options;
 
 void print_version()
 {
-    std::cout << "IfcOpenShell " << IfcSchema::Identifier << " IfcConvert " << IFCOPENSHELL_VERSION << " (OCC " << OCC_VERSION_STRING_EXT << ")\n";
+    cout_ << "IfcOpenShell " << IfcSchema::Identifier << " IfcConvert " << IFCOPENSHELL_VERSION << " (OCC " << OCC_VERSION_STRING_EXT << ")\n";
 }
 
 void print_usage(bool suggest_help = true)
 {
-    std::cout << "Usage: IfcConvert [options] <input.ifc> [<output>]\n"
+    cout_ << "Usage: IfcConvert [options] <input.ifc> [<output>]\n"
         << "\n"
         << "Converts the geometry in an IFC file into one of the following formats:\n"
         << "  .obj   WaveFront OBJ  (a .mtl file is also created)\n"
@@ -75,46 +94,43 @@ void print_usage(bool suggest_help = true)
         << "  .xml   XML            Property definitions and decomposition tree\n"
         << "  .svg   SVG            Scalable Vector Graphics (2D floor plan)\n"
         << "\n"
-        << "If no output filename given, <input>." + DEFAULT_EXTENSION + " will be used as the output file.\n";
+        << "If no output filename given, <input>." << IfcUtil::path::from_utf8(DEFAULT_EXTENSION) << " will be used as the output file.\n";
     if (suggest_help) {
-        std::cout << "\nRun 'IfcConvert --help' for more information.";
+        cout_ << "\nRun 'IfcConvert --help' for more information.";
     }
-    std::cout << std::endl;
+    cout_ << std::endl;
 }
 
 /// @todo Add help for single option
 void print_options(const po::options_description& options)
 {
-    std::cout << "\n" << options;
+#if defined(_MSC_VER) && defined(_UNICODE)
-    std::cout << std::endl;
+	// See issue https://svn.boost.org/trac10/ticket/10952
+	std::ostringstream temp;
+	temp << options;
+	cout_ << "\n" << temp.str().c_str();
+#else
+	cout_ << "\n" << options;
+#endif
+	cout_ << std::endl;
 }
 
-std::string change_extension(const std::string& fn, const std::string& ext) {
+template <typename T>
-	std::string::size_type dot = fn.find_last_of('.');
+T change_extension(const T& fn, const T& ext) {
-	if (dot != std::string::npos) {
+	typename T::size_type dot = fn.find_last_of('.');
-		return fn.substr(0,dot+1) + ext;
+	if (dot != T::npos) {
+		return fn.substr(0, dot) + ext;
 	} else {
-		return fn + "." + ext;
+		return fn + ext;
 	}
 }
 
-bool file_exists(const std::string& filename)
+bool file_exists(const std::string& filename) {
-{
+    std::ifstream file(IfcUtil::path::from_utf8(filename).c_str());
-    /// @todo Windows Unicode support
-    std::ifstream file(filename.c_str());
     return file.good();
 }
 
-bool rename_file(const std::string& old_filename, const std::string& new_filename)
+static std::basic_stringstream<path_t::value_type> log_stream;
-{
-    // Whether or not rename() replaces an existing file is implementation-specific,
-    // so remove() possible existing file always.
-    /// @todo Windows Unicode support
-    std::remove(new_filename.c_str());
-    return std::rename(old_filename.c_str(), new_filename.c_str()) == 0;
-}
-
-static std::stringstream log_stream;
 void write_log(bool);
 std::string format_duration(time_t start, time_t end);
 
@@ -153,9 +169,28 @@ std::vector<IfcGeom::filter_t> setup_filters(const std::vector<geom_filter>&, co
 
 bool init_input_file(const std::string& filename, IfcParse::IfcFile& ifc_file, bool no_progress, bool mmap);
 
-int main(int argc, char** argv)
+#if defined(_MSC_VER) && defined(_UNICODE)
-{
+int wmain(int argc, wchar_t** argv) {
+	typedef po::wcommand_line_parser command_line_parser;
+	typedef wchar_t char_t;
+
+	_setmode(_fileno(stdout), _O_U16TEXT);
+	_setmode(_fileno(stderr), _O_U16TEXT);
+#else
+int main(int argc, char** argv) {
+	typedef po::command_line_parser command_line_parser;
+	typedef char char_t;
+#endif
+
+	double deflection_tolerance;
+	inclusion_filter include_filter;
+	inclusion_traverse_filter include_traverse_filter;
+	exclusion_filter exclude_filter;
+	exclusion_traverse_filter exclude_traverse_filter;
+	path_t filter_filename;
+	path_t default_material_filename;
 	std::string log_format;
+
     po::options_description generic_options("Command line options");
 	generic_options.add_options()
 		("help,h", "display usage information")
@@ -172,17 +207,8 @@ int main(int argc, char** argv)
 #ifdef USE_MMAP
 		("mmap", "use memory-mapped file for input")
 #endif
-		("input-file", po::value<std::string>(), "input IFC file")
+		("input-file", new po::typed_value<path_t, char_t>(0), "input IFC file")
-		("output-file", po::value<std::string>(), "output geometry file");
+		("output-file", new po::typed_value<path_t, char_t>(0), "output geometry file");
-		
-
-    double deflection_tolerance;
-    inclusion_filter include_filter;
-    inclusion_traverse_filter include_traverse_filter;
-    exclusion_filter exclude_filter;
-    exclusion_traverse_filter exclude_traverse_filter;
-    std::string filter_filename;
-    std::string default_material_filename;
 
     po::options_description geom_options("Geometry options");
 	geom_options.add_options()
@@ -259,12 +285,12 @@ int main(int argc, char** argv)
         ("generate-uvs",
             "Generates UVs (texture coordinates) by using simple box projection. Requires normals. "
             "Not guaranteed to work properly if used with --weld-vertices.")
-        ("filter-file", po::value<std::string>(&filter_filename),
+        ("filter-file", new po::typed_value<path_t, char_t>(&filter_filename),
             "Specifies a filter file that describes the used filtering criteria. Supported formats "
             "are '--include=arg GlobalId ...' and 'include arg GlobalId ...'. Spaces and tabs can be used as delimiters."
             "Multiple filters of same type with different values can be inserted on their own lines. "
             "See --include, --include+, --exclude, and --exclude+ for more details.")
-        ("default-material-file", po::value<std::string>(&default_material_filename),
+        ("default-material-file", new po::typed_value<path_t, char_t>(&default_material_filename),
             "Specifies a material file that describes the material object types will have"
             "if an object does not have any specified material in the IFC file.");
 
@@ -327,21 +353,21 @@ int main(int argc, char** argv)
 
     po::variables_map vmap;
     try {
-        po::store(po::command_line_parser(argc, argv).
+        po::store(command_line_parser(argc, argv).
             options(cmdline_options).positional(positional_options).run(), vmap);
     } catch (const po::unknown_option& e) {
-        std::cerr << "[Error] Unknown option '" << e.get_option_name() << "'\n\n";
+        cerr_ << "[Error] Unknown option '" << e.get_option_name().c_str() << "'\n\n";
         print_usage();
         return EXIT_FAILURE;
     } catch (const po::error_with_option_name& e) {
-        std::cerr << "[Error] Invalid usage of '" << e.get_option_name() << "': " << e.what() << "\n\n";
+        cerr_ << "[Error] Invalid usage of '" << e.get_option_name().c_str() << "': " << e.what() << "\n\n";
         return EXIT_FAILURE;
     } catch (const std::exception& e) {
-        std::cerr << "[Error] " << e.what() << "\n\n";
+        cerr_ << "[Error] " << e.what() << "\n\n";
         print_usage();
         return EXIT_FAILURE;
     } catch (...) {
-		std::cerr << "[Error] Unknown error parsing command line options\n\n";
+		cerr_ << "[Error] Unknown error parsing command line options\n\n";
         print_usage();
         return EXIT_FAILURE;
     }
@@ -376,11 +402,11 @@ int main(int argc, char** argv)
 	const bool building_local_placement = vmap.count("building-local-placement") != 0;
 	const bool generate_uvs = vmap.count("generate-uvs") != 0;
 
-	if (!quiet || vmap.count("version")) {
+    if (!quiet || vmap.count("version")) {
 		print_version();
 	}
 
-    if (vmap.count("version")) {
+	if (vmap.count("version")) {
         return EXIT_SUCCESS;
     } else if (vmap.count("help")) {
         print_usage(false);
@@ -392,69 +418,6 @@ int main(int argc, char** argv)
         return EXIT_FAILURE;
     }
     
-#ifdef HAVE_ICU
-    if (!unicode_mode.empty()) {
-        if (unicode_mode == "utf8") {
-            IfcParse::IfcCharacterDecoder::mode = IfcParse::IfcCharacterDecoder::UTF8;
-        } else if (unicode_mode == "escape") {
-            IfcParse::IfcCharacterDecoder::mode = IfcParse::IfcCharacterDecoder::JSON;
-        } else {
-            std::cerr << "[Error] Invalid value for --unicode" << std::endl;
-            print_options(serializer_options);
-            return 1;
-        }
-    }
-#endif
-
-	boost::optional<double> bounding_width;
-	boost::optional<double> bounding_height;
-	if (vmap.count("bounds") == 1) {
-		int w, h;
-		if (sscanf(bounds.c_str(), "%ux%u", &w, &h) == 2 && w > 0 && h > 0) {
-			bounding_width = w;
-			bounding_height = h;
-		} else {
-			std::cerr << "[Error] Invalid use of --bounds" << std::endl;
-            print_options(serializer_options);
-			return EXIT_FAILURE;
-		}
-	}
-
-	const std::string input_filename = vmap["input-file"].as<std::string>();
-    if (!file_exists(input_filename)) {
-        std::cerr << "[Error] Input file '" << input_filename << "' does not exist" << std::endl;
-        return EXIT_FAILURE;
-    }
-
-	// If no output filename is specified a Wavefront OBJ file will be output
-	// to maintain backwards compatibility with the obsolete IfcObj executable.
-	const std::string output_filename = vmap.count("output-file") == 1 
-		? vmap["output-file"].as<std::string>()
-		: change_extension(input_filename, DEFAULT_EXTENSION);
-	
-	if (output_filename.size() < 5) {
-        std::cerr << "[Error] Invalid or unsupported output file '" << output_filename << "' given" << std::endl;
-        print_usage();
-		return EXIT_FAILURE;
-	}
-
-    if (file_exists(output_filename) && !vmap.count("yes")) {
-        std::string answer;
-        std::cout << "A file '" << output_filename << "' already exists. Overwrite the existing file?" << std::endl;
-        std::cin >> answer;
-        if (!boost::iequals(answer, "yes") && !boost::iequals(answer, "y")) {
-            return EXIT_SUCCESS;
-        }
-    }
-
-    std::string output_temp_filename = output_filename + TEMP_FILE_EXTENSION;
-
-	std::string output_extension = output_filename.substr(output_filename.size()-4);
-	boost::to_lower(output_extension);
-
-    Logger::SetOutput(&std::cout, &log_stream);
-    Logger::Verbosity(verbose ? Logger::LOG_NOTICE : Logger::LOG_ERROR);
-
 	if (vmap.count("log-format") == 1) {
 		boost::to_lower(log_format);
 		if (log_format == "plain") {
@@ -468,22 +431,113 @@ int main(int argc, char** argv)
 		}
 	}
     
+    if (!filter_filename.empty()) {
+        size_t num_filters = read_filters_from_file(IfcUtil::path::to_utf8(filter_filename), include_filter, include_traverse_filter, exclude_filter, exclude_traverse_filter);
+        if (num_filters) {
+            Logger::Notice(boost::lexical_cast<std::string>(num_filters) + " filters read from specifified file.");
+        } else {
+            std::cerr << "[Error] No filters read from specifified file.\n";
+            return EXIT_FAILURE;
+        }
+    }
+
+#ifdef HAVE_ICU
+    if (!unicode_mode.empty()) {
+        if (unicode_mode == "utf8") {
+            IfcParse::IfcCharacterDecoder::mode = IfcParse::IfcCharacterDecoder::UTF8;
+        } else if (unicode_mode == "escape") {
+            IfcParse::IfcCharacterDecoder::mode = IfcParse::IfcCharacterDecoder::JSON;
+        } else {
+            cerr_ << "[Error] Invalid value for --unicode" << std::endl;
+            print_options(serializer_options);
+            return 1;
+        }
+    }
+#endif
+
+    if (!default_material_filename.empty()) {
+        try {
+            IfcGeom::set_default_style_file(IfcUtil::path::to_utf8(default_material_filename));
+        } catch (const std::exception& e) {
+            std::cerr << "[Error] Could not read default material file:" << std::endl;
+            std::cerr << e.what() << std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+
+	boost::optional<double> bounding_width;
+	boost::optional<double> bounding_height;
+	if (vmap.count("bounds") == 1) {
+		int w, h;
+		if (sscanf(bounds.c_str(), "%ux%u", &w, &h) == 2 && w > 0 && h > 0) {
+			bounding_width = w;
+			bounding_height = h;
+		} else {
+			cerr_ << "[Error] Invalid use of --bounds" << std::endl;
+            print_options(serializer_options);
+			return EXIT_FAILURE;
+		}
+	}
+
+	const path_t input_filename = vmap["input-file"].as<path_t>();
+    if (!file_exists(IfcUtil::path::to_utf8(input_filename))) {
+        cerr_ << "[Error] Input file '" << input_filename << "' does not exist" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+	// If no output filename is specified a Wavefront OBJ file will be output
+	// to maintain backwards compatibility with the obsolete IfcObj executable.
+	const path_t output_filename = vmap.count("output-file") == 1 
+		? vmap["output-file"].as<path_t>()
+		: change_extension(input_filename, IfcUtil::path::from_utf8(DEFAULT_EXTENSION));
+	
+	if (output_filename.size() < 5) {
+        cerr_ << "[Error] Invalid or unsupported output file '" << output_filename << "' given" << std::endl;
+        print_usage();
+		return EXIT_FAILURE;
+	}
+
+    if (file_exists(IfcUtil::path::to_utf8(output_filename)) && !vmap.count("yes")) {
+        std::string answer;
+        cout_ << "A file '" << output_filename << "' already exists. Overwrite the existing file?" << std::endl;
+        std::cin >> answer;
+        if (!boost::iequals(answer, "yes") && !boost::iequals(answer, "y")) {
+            return EXIT_SUCCESS;
+        }
+    }
+
+	Logger::SetOutput(&cout_, &log_stream);
+	Logger::Verbosity(verbose ? Logger::LOG_NOTICE : Logger::LOG_ERROR);
+
+    path_t output_temp_filename = output_filename + IfcUtil::path::from_utf8(TEMP_FILE_EXTENSION);
+
+	path_t output_extension = output_filename.substr(output_filename.size()-4);
+	boost::to_lower(output_extension);
+
     IfcParse::IfcFile ifc_file;
 
-    if (output_extension == ".xml") {
+	const path_t OBJ = IfcUtil::path::from_utf8(".obj"),
+		MTL = IfcUtil::path::from_utf8(".mtl"),
+		DAE = IfcUtil::path::from_utf8(".dae"),
+		STP = IfcUtil::path::from_utf8(".stp"),
+		IGS = IfcUtil::path::from_utf8(".igs"),
+		SVG = IfcUtil::path::from_utf8(".svg"),
+		XML = IfcUtil::path::from_utf8(".xml");
+
+    if (output_extension == XML) {
         int exit_code = EXIT_FAILURE;
         try {
-            if (init_input_file(input_filename, ifc_file, no_progress || quiet, mmap)) {
+            if (init_input_file(IfcUtil::path::to_utf8(input_filename), ifc_file, no_progress || quiet, mmap)) {
                 time_t start, end;
                 time(&start);
-                XmlSerializer s(output_temp_filename);
+                XmlSerializer s(IfcUtil::path::to_utf8(output_temp_filename));
                 s.setFile(&ifc_file);
                 Logger::Status("Writing XML output...");
                 s.finalize();
                 time(&end);
                 Logger::Status("Done! Conversion took " +  format_duration(start, end));
 
-                rename_file(output_temp_filename, output_filename);
+                IfcUtil::path::rename_file(IfcUtil::path::to_utf8(output_temp_filename), IfcUtil::path::to_utf8(output_filename));
                 exit_code = EXIT_SUCCESS;
             }
         } catch (const std::exception& e) {
@@ -493,26 +547,6 @@ int main(int argc, char** argv)
         return exit_code;
     }
 
-    if (!filter_filename.empty()) {
-        size_t num_filters = read_filters_from_file(filter_filename, include_filter, include_traverse_filter, exclude_filter, exclude_traverse_filter);
-        if (num_filters) {
-            Logger::Notice(boost::lexical_cast<std::string>(num_filters) + " filters read from '" + filter_filename + "'.");
-        } else {
-            std::cerr << "[Error] No filters read from '" + filter_filename + "'.\n";
-            return EXIT_FAILURE;
-        }
-    }
-
-		if (!default_material_filename.empty()) {
-			try {
-				IfcGeom::set_default_style_file(default_material_filename);
-			} catch (const std::exception& e) {
-				std::cerr << "[Error] Could not read default material file " << default_material_filename << ":" << std::endl;
-				std::cerr << e.what() << std::endl;
-				return EXIT_FAILURE;
-			}
-		}
-
     /// @todo Clean up this filter code further.
     std::vector<geom_filter> used_filters;
     if (include_filter.type != geom_filter::UNUSED) { used_filters.push_back(include_filter); }
@@ -520,9 +554,9 @@ int main(int argc, char** argv)
     if (exclude_filter.type != geom_filter::UNUSED) { used_filters.push_back(exclude_filter); }
     if (exclude_traverse_filter.type != geom_filter::UNUSED) { used_filters.push_back(exclude_traverse_filter); }
 
-    std::vector<IfcGeom::filter_t> filter_funcs = setup_filters(used_filters, output_extension);
+    std::vector<IfcGeom::filter_t> filter_funcs = setup_filters(used_filters, IfcUtil::path::to_utf8(output_extension));
     if (filter_funcs.empty()) {
-        std::cerr << "[Error] Failed to set up geometry filters\n";
+        cerr_ << "[Error] Failed to set up geometry filters\n";
         return EXIT_FAILURE;
     }
 
@@ -533,6 +567,20 @@ int main(int argc, char** argv)
     if (!desc_filter.values.empty()) { desc_filter.update_description(); Logger::Notice(desc_filter.description); }
     if (!tag_filter.values.empty()) { tag_filter.update_description(); Logger::Notice(tag_filter.description); }
 
+#ifdef _MSC_VER
+	if (output_extension == DAE || output_extension == STP || output_extension == IGS) {
+		// These serializers do not support opening unicode paths on Windows. Therefore
+		// a random temp file is generated using only ASCII characters instead.
+		std::random_device rng;
+		std::uniform_int_distribution<int> index_dist(L'A', L'Z');
+		output_temp_filename = L".ifcopenshell.";
+		for (int i = 0; i < 8; ++i) {
+			output_temp_filename.push_back(static_cast<wchar_t>(index_dist(rng)));
+		}
+		output_temp_filename += L".tmp";
+	}
+#endif
+
 	SerializerSettings settings;
 	/// @todo Make APPLY_DEFAULT_MATERIALS configurable? Quickly tested setting this to false and using obj exporter caused the program to crash and burn.
 	settings.set(IfcGeom::IteratorSettings::APPLY_DEFAULT_MATERIALS,      true);
@@ -563,26 +611,26 @@ int main(int argc, char** argv)
     settings.precision = precision;
 
 	boost::shared_ptr<GeometrySerializer> serializer; /**< @todo use std::unique_ptr when possible */
-	if (output_extension == ".obj") {
+	if (output_extension == OBJ) {
         // Do not use temp file for MTL as it's such a small file.
-        const std::string mtl_filename = change_extension(output_filename, "mtl");
+        const path_t mtl_filename = change_extension(output_filename, MTL);
 		if (!use_world_coords) {
 			Logger::Notice("Using world coords when writing WaveFront OBJ files");
 			settings.set(IfcGeom::IteratorSettings::USE_WORLD_COORDS, true);
 		}
-		serializer = boost::make_shared<WaveFrontOBJSerializer>(output_temp_filename, mtl_filename, settings);
+		serializer = boost::make_shared<WaveFrontOBJSerializer>(IfcUtil::path::to_utf8(output_temp_filename), IfcUtil::path::to_utf8(mtl_filename), settings);
 #ifdef WITH_OPENCOLLADA
-	} else if (output_extension == ".dae") {
+	} else if (output_extension == DAE) {
-		serializer = boost::make_shared<ColladaSerializer>(output_temp_filename, settings);
+		serializer = boost::make_shared<ColladaSerializer>(IfcUtil::path::to_utf8(output_temp_filename), settings);
 #endif
-	} else if (output_extension == ".stp") {
+	} else if (output_extension == STP) {
-		serializer = boost::make_shared<StepSerializer>(output_temp_filename, settings);
+		serializer = boost::make_shared<StepSerializer>(IfcUtil::path::to_utf8(output_temp_filename), settings);
-	} else if (output_extension == ".igs") {
+	} else if (output_extension == IGS) {
 		IGESControl_Controller::Init(); // work around Open Cascade bug
-		serializer = boost::make_shared<IgesSerializer>(output_temp_filename, settings);
+		serializer = boost::make_shared<IgesSerializer>(IfcUtil::path::to_utf8(output_temp_filename), settings);
-	} else if (output_extension == ".svg") {
+	} else if (output_extension == SVG) {
 		settings.set(IfcGeom::IteratorSettings::DISABLE_TRIANGULATION, true);
-		serializer = boost::make_shared<SvgSerializer>(output_temp_filename, settings);
+		serializer = boost::make_shared<SvgSerializer>(IfcUtil::path::to_utf8(output_temp_filename), settings);
 		if (vmap.count("section-height") != 0) {
 			Logger::Notice("Overriding section height");
 			static_cast<SvgSerializer*>(serializer.get())->setSectionHeight(section_height);
@@ -591,18 +639,18 @@ int main(int argc, char** argv)
             static_cast<SvgSerializer*>(serializer.get())->setBoundingRectangle(bounding_width.get(), bounding_height.get());
 		}
 	} else {
-        std::cerr << "[Error] Unknown output filename extension '" + output_extension + "'\n";
+        cerr_ << "[Error] Unknown output filename extension '" << output_extension << "'\n";
 		write_log(!quiet);
 		print_usage();
 		return EXIT_FAILURE;
 	}
 
-    if (use_element_hierarchy && output_extension != ".dae") {
+    if (use_element_hierarchy && output_extension != DAE) {
-        std::cerr << "[Error] --use-element-hierarchy can be used only with .dae output.\n";
+        cerr_ << "[Error] --use-element-hierarchy can be used only with .dae output.\n";
         /// @todo Lots of duplicate error-and-exit code.
 		write_log(!quiet);
 		print_usage();
-        std::remove(output_temp_filename.c_str()); /**< @todo Windows Unicode support */
+		IfcUtil::path::delete_file(IfcUtil::path::to_utf8(output_temp_filename));
 		return EXIT_FAILURE;
 	}
 
@@ -622,7 +670,7 @@ int main(int argc, char** argv)
 	}
 
 	if (!serializer->ready()) {
-        std::remove(output_temp_filename.c_str()); /**< @todo Windows Unicode support */
+		IfcUtil::path::delete_file(IfcUtil::path::to_utf8(output_temp_filename));
 		write_log(!quiet);
 		return EXIT_FAILURE;
 	}
@@ -630,9 +678,9 @@ int main(int argc, char** argv)
 	time_t start,end;
 	time(&start);
 	
-    if (!init_input_file(input_filename, ifc_file, no_progress || quiet, mmap)) {
+    if (!init_input_file(IfcUtil::path::to_utf8(input_filename), ifc_file, no_progress || quiet, mmap)) {
         write_log(!quiet);
-        std::remove(output_temp_filename.c_str()); /**< @todo Windows Unicode support */
+        IfcUtil::path::delete_file(IfcUtil::path::to_utf8(output_temp_filename)); /**< @todo Windows Unicode support */
         return EXIT_FAILURE;
     }
 
@@ -641,7 +689,7 @@ int main(int argc, char** argv)
         /// @todo It would be nice to know and print separate error prints for a case where we found no entities
         /// and for a case we found no entities that satisfy our filtering criteria.
         Logger::Error("No geometrical entities found");
-        std::remove(output_temp_filename.c_str()); /**< @todo Windows Unicode support */
+		IfcUtil::path::delete_file(IfcUtil::path::to_utf8(output_temp_filename));
         write_log(!quiet);
         return EXIT_FAILURE;
     }
@@ -676,8 +724,8 @@ int main(int argc, char** argv)
             offset[2] = -center.Z();
         } else {
             if (sscanf(offset_str.c_str(), "%lf;%lf;%lf", &offset[0], &offset[1], &offset[2]) != 3) {
-                std::cerr << "[Error] Invalid use of --model-offset\n";
+                cerr_ << "[Error] Invalid use of --model-offset\n";
-                std::remove(output_temp_filename.c_str()); /**< @todo Windows Unicode support */
+				IfcUtil::path::delete_file(IfcUtil::path::to_utf8(output_temp_filename));
                 print_options(serializer_options);
                 return EXIT_FAILURE;
             }
@@ -755,10 +803,10 @@ int main(int argc, char** argv)
 
     // Renaming might fail (e.g. maybe the existing file was open in a viewer application)
     // Do not remove the temp file as user can salvage the conversion result from it.
-    bool successful = rename_file(output_temp_filename, output_filename);
+    bool successful = IfcUtil::path::rename_file(IfcUtil::path::to_utf8(output_temp_filename), IfcUtil::path::to_utf8(output_filename));
     if (!successful) {
-        Logger::Error("Unable to write output file '" + output_filename + "', see '" +
+        cerr_ << "Unable to write output file '" << output_filename << "', see '" <<
-            output_temp_filename + "' for the conversion result.");
+            output_temp_filename << "' for the conversion result.";
     }
 
 	write_log(!quiet);
@@ -793,12 +841,12 @@ std::string format_duration(time_t start, time_t end)
 }
 
 void write_log(bool header) {
-	std::string log = log_stream.str();
+	path_t log = log_stream.str();
 	if (!log.empty()) {
-		if (header) {
+        if (header) {
-			std::cout << "\nLog:\n";
+            cout_ << "\nLog:\n";
-		}
+        }
-		std::cout << log << std::endl;
+        cout_ << log << std::endl;
 	}
 }
 
@@ -821,7 +869,7 @@ bool init_input_file(const std::string &filename, IfcParse::IfcFile &ifc_file, b
     }
     time(&end);
 
-    if (no_progress) { Logger::SetOutput(&std::cout, &log_stream); }
+    if (no_progress) { Logger::SetOutput(&cout_, &log_stream); }
     else {  Logger::Status("Parsing input file took " + format_duration(start, end)); }
 
     return true;
@@ -833,7 +881,7 @@ bool append_filter(const std::string& type, const std::vector<std::string>& valu
     parse_filter(temp, values);
     // Merge values only if type and arg match.
     if ((filter.type != geom_filter::UNUSED && filter.type != temp.type) || (!filter.arg.empty() && filter.arg != temp.arg)) {
-        std::cerr << "[Error] Multiple '" << type << "' filters specified with different criteria\n";
+        cerr_ << "[Error] Multiple '" << type.c_str() << "' filters specified with different criteria\n";
         return false;
     }
     filter.type = temp.type;
@@ -849,9 +897,10 @@ size_t read_filters_from_file(
     exclusion_filter& exclude_filter,
     exclusion_traverse_filter& exclude_traverse_filter)
 {
-    std::ifstream filter_file(filename.c_str());
+    std::ifstream filter_file(IfcUtil::path::from_utf8(filename).c_str());
+
     if (!filter_file.is_open()) {
-        std::cerr << "[Error] Unable to open filter file '" + filename + "' or the file does not exist.\n";
+        cerr_ << "[Error] Unable to open filter file '" << IfcUtil::path::from_utf8(filename) << "' or the file does not exist.\n";
         return 0;
     }
 
@@ -886,11 +935,11 @@ size_t read_filters_from_file(
             else if (type == "exclude") { if (append_filter("exclude", values, exclude_filter)) { ++num_filters; } }
             else if (type == "exclude+") { if (append_filter("exclude+", values, exclude_traverse_filter)) { ++num_filters; } }
             else {
-                std::cerr << "[Error] Invalid filtering type at line " + boost::lexical_cast<std::string>(line_number) + "\n";
+                cerr_ << "[Error] Invalid filtering type at line " << boost::lexical_cast<path_t>(line_number) << "\n";
                 return 0;
             }
         } catch(...) {
-            std::cerr << "[Error] Unable to parse filter at line " + boost::lexical_cast<std::string>(line_number) + ".\n";
+            cerr_ << "[Error] Unable to parse filter at line " << boost::lexical_cast<path_t>(line_number) << ".\n";
             return 0;
         }
     }
@@ -965,7 +1014,7 @@ std::vector<IfcGeom::filter_t> setup_filters(const std::vector<geom_filter>& fil
             try {
                 entity_filter.populate(f.values);
             } catch (const IfcParse::IfcException& e) {
-                std::cerr << "[Error] " << e.what() << std::endl;
+                cerr_ << "[Error] " << e.what() << std::endl;
                 return std::vector<IfcGeom::filter_t>();
             }
         } else if (f.type == geom_filter::LAYER_NAME) {
@@ -1005,7 +1054,7 @@ std::vector<IfcGeom::filter_t> setup_filters(const std::vector<geom_filter>& fil
             }
             entity_filter.populate(entities);
         } catch (const IfcParse::IfcException& e) {
-            std::cerr << "[Error] " << e.what() << std::endl;
+            cerr_ << "[Error] " << e.what() << std::endl;
             return std::vector<IfcGeom::filter_t>();
         }
     }

src/ifcconvert/OpenCascadeBasedSerializer.cpp

@@ -17,19 +17,21 @@
  *                                                                              *
  ********************************************************************************/
 
+#include "OpenCascadeBasedSerializer.h"
+
+#include "../ifcparse/utils.h"
+
 #include <string>
 #include <fstream>
 #include <cstdio>
 
 #include <Standard_Version.hxx>
 
-#include "OpenCascadeBasedSerializer.h"
-
 bool OpenCascadeBasedSerializer::ready() {
-	std::ofstream test_file(out_filename.c_str(), std::ios_base::binary);
+	std::ofstream test_file(IfcUtil::path::from_utf8(out_filename).c_str(), std::ios_base::binary);
 	bool succeeded = test_file.is_open();
 	test_file.close();
-	remove(out_filename.c_str());
+	IfcUtil::path::delete_file(out_filename);
 	return succeeded;
 }
 

src/ifcconvert/SvgSerializer.h

@@ -25,6 +25,8 @@
 #include "../ifcconvert/GeometrySerializer.h"
 #include "../ifcconvert/util.h"
 
+#include "../ifcparse/utils.h"
+
 #include <sstream>
 #include <string>
 #include <limits>
@@ -46,7 +48,7 @@ protected:
 public:
 	SvgSerializer(const std::string& out_filename, const SerializerSettings& settings)
 		: GeometrySerializer(settings)
-		, svg_file(out_filename.c_str())
+		, svg_file(IfcUtil::path::from_utf8(out_filename).c_str())
 		, xmin(+std::numeric_limits<double>::infinity())
 		, ymin(+std::numeric_limits<double>::infinity())
 		, xmax(-std::numeric_limits<double>::infinity())

src/ifcconvert/WavefrontObjSerializer.cpp

@@ -22,9 +22,22 @@
 
 #include "../ifcgeom/IfcGeomRenderStyles.h"
 
+#include "../ifcparse/utils.h"
+
 #include <boost/lexical_cast.hpp>
 #include <iomanip>
 
+WaveFrontOBJSerializer::WaveFrontOBJSerializer(const std::string& obj_filename, const std::string& mtl_filename, const SerializerSettings& settings)
+	: GeometrySerializer(settings)
+	, mtl_filename(mtl_filename)
+	, obj_stream(IfcUtil::path::from_utf8(obj_filename).c_str())
+	, mtl_stream(IfcUtil::path::from_utf8(mtl_filename).c_str())
+	, vcount_total(1)
+{
+	obj_stream << std::setprecision(settings.precision);
+	mtl_stream << std::setprecision(settings.precision);
+}
+
 bool WaveFrontOBJSerializer::ready() {
 	return obj_stream.is_open() && mtl_stream.is_open();
 }

src/ifcconvert/WavefrontObjSerializer.h

@@ -35,17 +35,7 @@ private:
 	unsigned int vcount_total;
 	std::set<std::string> materials;
 public:
-	WaveFrontOBJSerializer(const std::string& obj_filename, const std::string& mtl_filename, const SerializerSettings& settings)
+	WaveFrontOBJSerializer(const std::string& obj_filename, const std::string& mtl_filename, const SerializerSettings& settings);
-		: GeometrySerializer(settings)
-		, mtl_filename(mtl_filename)
-		, obj_stream(obj_filename.c_str())
-		, mtl_stream(mtl_filename.c_str())
-		, vcount_total(1)
-    {
-        obj_stream << std::setprecision(settings.precision);
-        mtl_stream << std::setprecision(settings.precision);
-    }
-
 	virtual ~WaveFrontOBJSerializer() {}
 	bool ready();
 	void writeHeader();

src/ifcconvert/XmlSerializer.cpp

@@ -17,8 +17,6 @@
 *                                                                              *
 ********************************************************************************/
 
-#include <map>
-
 #include <boost/property_tree/ptree.hpp>
 #include <boost/property_tree/xml_parser.hpp>
 #include <boost/version.hpp>
@@ -26,10 +24,12 @@
 
 #include "XmlSerializer.h"
 
-#include <algorithm>
-
 #include "../ifcparse/IfcSIPrefix.h"
 #include "../ifcgeom/IfcGeom.h"
+#include "../ifcparse/utils.h"
+
+#include <map>
+#include <algorithm>
 
 using boost::property_tree::ptree;
 using namespace IfcSchema;
@@ -528,5 +528,7 @@ void XmlSerializer::finalize() {
 #else
 	boost::property_tree::xml_writer_settings<char> settings('\t', 1);
 #endif
-	boost::property_tree::write_xml(xml_filename, root, std::locale(), settings);
+	
+	std::ofstream f(IfcUtil::path::from_utf8(xml_filename).c_str());
+	boost::property_tree::write_xml(f, root, settings);
 }

src/ifcgeom/IfcGeomRenderStyles.cpp

@@ -200,6 +200,7 @@ void IfcGeom::set_default_style_file(const std::string& json_file) {
   if (!default_materials_initialized) InitDefaultMaterials();
   default_materials.clear();
 
+  // @todo this will probably need to be updated for UTF-8 paths on Windows
   pt::ptree root;
   pt::read_json(json_file, root);
 

src/ifcparse/Argument.h

@@ -52,10 +52,6 @@ namespace IfcUtil {
     IFC_PARSE_API const char* ArgumentTypeToString(ArgumentType argument_type);
 
 	IFC_PARSE_API bool valid_binary_string(const std::string& s);
-    /// Replaces spaces and potentially other problem causing characters with underscores.
-    IFC_PARSE_API void sanitate_material_name(std::string &str);
-    IFC_PARSE_API void escape_xml(std::string &str);
-    IFC_PARSE_API void unescape_xml(std::string &str);
 }
 
 class IFC_PARSE_API Argument {

src/ifcparse/IfcLogger.cpp

@@ -30,35 +30,56 @@
 #include <iostream>
 #include <algorithm>
 
-using boost::property_tree::ptree;
-
 namespace {
-	static const char* severity_strings[] = {"Notice", "Warning", "Error"};
 	
-	void plain_text_message(std::ostream& os, const boost::optional<IfcSchema::IfcProduct*>& current_product, Logger::Severity type, const std::string& message, IfcEntityInstanceData* entity) {
+	template <typename T>
-		os << "[" << severity_strings[type] << "] ";
+	struct severity_strings {
+		static const std::array<std::basic_string<T>, 3> value;
+	};
+
+	const std::array<std::basic_string<char>, 3> severity_strings<char>::value = { "Notice", "Warning", "Error" };
+	const std::array<std::basic_string<wchar_t>, 3> severity_strings<wchar_t>::value = { L"Notice", L"Warning", L"Error" };
+	
+	template <typename T>
+	void plain_text_message(T& os, const boost::optional<IfcSchema::IfcProduct*>& current_product, Logger::Severity type, const std::string& message, IfcEntityInstanceData* entity) {
+		os << "[" << severity_strings<T::char_type>::value[type] << "] ";
 		if (current_product) {
-			os << "{" << (*current_product)->GlobalId() << "} ";
+			os << "{" << (*current_product)->GlobalId().c_str() << "} ";
 		}
-		os << message << std::endl;
+		os << message.c_str() << std::endl;
 		if (entity) {
 			std::string instance_string = entity->toString();
 			if (instance_string.size() > 259) {
 				instance_string = instance_string.substr(0, 256) + "...";
 			}
-			os << instance_string << std::endl;
+			os << instance_string.c_str() << std::endl;
 		}
 	}
 
-	void json_message(std::ostream& os, const boost::optional<IfcSchema::IfcProduct*>& current_product, Logger::Severity type, const std::string& message, IfcEntityInstanceData* entity) {
+	template <typename T>
-		ptree pt;
+	std::basic_string<T> string_as(const std::string& s) {
-		pt.put("level", severity_strings[type]);
+		std::basic_string<T> v;
+		v.assign(s.begin(), s.end());
+		return v;
+	}
+
+	template <typename T>
+	void json_message(T& os, const boost::optional<IfcSchema::IfcProduct*>& current_product, Logger::Severity type, const std::string& message, IfcEntityInstanceData* entity) {
+		boost::property_tree::basic_ptree<std::basic_string<T::char_type>, std::basic_string<T::char_type> > pt;
+		
+		// @todo this is crazy
+		static const T::char_type level_string[] = { 'l', 'e', 'v', 'e', 'l', 0 };
+		static const T::char_type product_string[] = { 'p', 'r', 'o', 'd', 'u', 'c', 't', 0 };
+		static const T::char_type message_string[] = { 'm', 'e', 's', 's', 'a', 'g', 'e', 0 };
+		static const T::char_type instance_string[] = { 'i', 'n', 's', 't', 'a', 'n', 'c', 'e', 0 };
+		
+		pt.put(level_string, severity_strings<T::char_type>::value[type]);
 		if (current_product) {
-			pt.put("product", (**current_product).entity->toString());
+			pt.put(product_string, string_as<T::char_type>((**current_product).entity->toString()));
 		}
-		pt.put("message", message);
+		pt.put(message_string, string_as<T::char_type>(message));
 		if (entity) {
-			pt.put("instance", entity);
+			pt.put(instance_string, string_as<T::char_type>(entity->toString()));
 		}
 		boost::property_tree::write_json(os, pt, false);
 	}
@@ -69,19 +90,49 @@ void Logger::SetProduct(boost::optional<IfcSchema::IfcProduct*> product) {
 }
 
 void Logger::SetOutput(std::ostream* l1, std::ostream* l2) {
+	wlog1 = wlog2 = 0;
 	log1 = l1; 
 	log2 = l2; 
-	if ( ! log2 ) {
+	if (!log2) {
 		log2 = &log_stream;
 	}
 }
 
+void Logger::SetOutput(std::wostream* l1, std::wostream* l2) {
+	log1 = log2 = 0;
+	wlog1 = l1;
+	wlog2 = l2;
+	if (!wlog2) {
+		log2 = &log_stream;
+	}
+}
+
+template <typename T>
+void Logger::log(T& log2, Logger::Severity type, const std::string& message, IfcEntityInstanceData* entity) {
+	log2 << "[" << severity_strings[type] << "] ";
+	if (current_product) {
+		log2 << "{" << (*current_product)->GlobalId().c_str() << "} ";
+	}
+	log2 << message.c_str() << std::endl;
+	if (entity) {
+		log2 << entity->toString().c_str() << std::endl;
+	}
+}
+
 void Logger::Message(Logger::Severity type, const std::string& message, IfcEntityInstanceData* entity) {
-	if (log2 && type >= verbosity) {
+	if ((log2 || wlog2) && type >= verbosity) {
 		if (format == FMT_PLAIN) {
-			plain_text_message(*log2, current_product, type, message, entity);
+            if (log2) {
+                plain_text_message(*log2, current_product, type, message, entity);
+            } else if (wlog2) {
+                plain_text_message(*wlog2, current_product, type, message, entity);
+            }
 		} else if (format == FMT_JSON) {
-			json_message(*log2, current_product, type, message, entity);
+            if (log2) {
+                json_message(*log2, current_product, type, message, entity);
+            } else if (wlog2) {
+                json_message(*wlog2, current_product, type, message, entity);
+            }
 		}
 	}
 }
@@ -90,18 +141,26 @@ void Logger::Message(Logger::Severity type, const std::exception& exception, Ifc
 	Message(type, exception.what(), entity);
 }
 
+template <typename T>
+void status(T& log1, const std::string& message, bool new_line) {
+	log1 << message.c_str();
+	if (new_line) {
+		log1 << std::endl;
+	} else {
+		log1 << std::flush;
+	}
+}
+
 void Logger::Status(const std::string& message, bool new_line) {
 	if (log1) {
-		(*log1) << message;
+		status(*log1, message, new_line);
-		if ( new_line ) (*log1) << std::endl;
+	} else if (wlog1) {
-		else (*log1) << std::flush;
+		status(*wlog1, message, new_line);
 	}
 }
 
 void Logger::ProgressBar(int progress) {
-	if (log1) {
+	Status("\r[" + std::string(progress,'#') + std::string(50 - progress,' ') + "]", false);
-		Status("\r[" + std::string(progress,'#') + std::string(50 - progress,' ') + "]", false);
-	}
 }
 
 std::string Logger::GetLog() {
@@ -116,6 +175,8 @@ Logger::Format Logger::OutputFormat() { return format; }
 
 std::ostream* Logger::log1 = 0;
 std::ostream* Logger::log2 = 0;
+std::wostream* Logger::wlog1 = 0;
+std::wostream* Logger::wlog2 = 0;
 std::stringstream Logger::log_stream;
 Logger::Severity Logger::verbosity = Logger::LOG_NOTICE;
 Logger::Format Logger::format = Logger::FMT_PLAIN;

src/ifcparse/IfcLogger.h

@@ -42,14 +42,29 @@ public:
 	typedef enum { LOG_NOTICE, LOG_WARNING, LOG_ERROR } Severity;
 	typedef enum { FMT_PLAIN, FMT_JSON } Format;
 private:
+
+	// To both stream variants need to exist at runtime or should this be a 
+	// template argument of Logger or controlled using preprocessor directives?
 	static std::ostream* log1;
 	static std::ostream* log2;
+	
+	static std::wostream* wlog1;
+	static std::wostream* wlog2;
+
 	static std::stringstream log_stream;
+
 	static Severity verbosity;
 	static Format format;
 	static boost::optional<IfcSchema::IfcProduct*> current_product;
+
+	template <typename T>
+	static void log(T& log2, Logger::Severity type, const std::string& message, IfcEntityInstanceData* entity);
 public:
 	static void SetProduct(boost::optional<IfcSchema::IfcProduct*> product);
+
+	/// Determines to what stream respectively progress and errors are logged
+	static void SetOutput(std::wostream* l1, std::wostream* l2);
+	
 	/// Determines to what stream respectively progress and errors are logged
 	static void SetOutput(std::ostream* l1, std::ostream* l2);
 

src/ifcparse/IfcParse.cpp

@@ -25,10 +25,6 @@
 #include <ctime>
 #include <boost/circular_buffer.hpp>
 
-#ifdef _MSC_VER
-#include <Windows.h>
-#endif
-
 #include <boost/algorithm/string.hpp>
 #include <boost/math/special_functions/fpclassify.hpp>
 
@@ -39,6 +35,7 @@
 #include "../ifcparse/IfcSpfStream.h"
 #include "../ifcparse/IfcFile.h"
 #include "../ifcparse/IfcSIPrefix.h"
+#include "../ifcparse/utils.h"
 
 #ifdef USE_IFC4
 #include "../ifcparse/Ifc4-latebound.h"
@@ -122,9 +119,8 @@ IfcSpfStream::IfcSpfStream(const std::string& fn)
 	, eof(false)
 {
 #ifdef _MSC_VER
-	int fn_buffer_size = MultiByteToWideChar(CP_UTF8, 0, fn.c_str(), -1, 0, 0);
+	std::wstring fn_ws = IfcUtil::path::from_utf8(fn);
-	wchar_t* fn_wide = new wchar_t[fn_buffer_size];
+	const wchar_t* fn_wide = fn_ws.c_str();
-	MultiByteToWideChar(CP_UTF8, 0, fn.c_str(), -1, fn_wide, fn_buffer_size);
 
 #ifdef USE_MMAP
 	if (mmap) {
@@ -136,7 +132,6 @@ IfcSpfStream::IfcSpfStream(const std::string& fn)
 	}
 #endif
 
-	delete[] fn_wide;
 #else
 
 #ifdef USE_MMAP

src/ifcparse/IfcUtil.cpp

@@ -17,8 +17,43 @@
  *                                                                              *
  ********************************************************************************/
 
+#ifdef _MSC_VER
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+#ifndef NOMSG
+#define NOMSG NOMSG
+#endif
+#ifndef NODRAWTEXT
+#define NODRAWTEXT NODRAWTEXT
+#endif
+#ifndef NOGDI
+#define NOGDI NOGDI
+#endif
+#ifndef NOSERVICE
+#define NOSERVICE NOSERVICE   
+#endif
+#ifndef NOKERNEL
+#define NOKERNEL NOKERNEL
+#endif
+#ifndef NOUSER
+#define NOUSER NOUSER
+#endif
+#ifndef NOMCX
+#define NOMCX NOMCX
+#endif
+#ifndef NOIME
+#define NOIME NOIME
+#endif
+#include <Windows.h>
+#endif
+
 #include "../ifcparse/IfcBaseClass.h"
 #include "../ifcparse/Argument.h"
+#include "../ifcparse/utils.h"
 #include "../ifcparse/IfcException.h"
 #include "../ifcparse/IfcEntityList.h"
 
@@ -198,3 +233,52 @@ Argument* IfcUtil::IfcBaseEntity::getArgumentByName(const std::string& name) con
 	unsigned int i = IfcSchema::Type::GetAttributeIndex(type(), name);
 	return getArgument(i);
 }
+
+#ifdef _MSC_VER
+std::string IfcUtil::path::to_utf8(const std::wstring& str) {
+	int buffer_size = WideCharToMultiByte(CP_UTF8, 0, str.c_str(), -1, 0, 0, 0, 0);
+	char* buffer = new char[buffer_size];
+	WideCharToMultiByte(CP_UTF8, 0, str.c_str(), -1, buffer, buffer_size, 0, 0);
+	std::string str_utf8(buffer);
+	delete[] buffer;
+	return str_utf8;
+}
+
+std::wstring IfcUtil::path::from_utf8(const std::string& str) {
+	int buffer_size = MultiByteToWideChar(CP_UTF8, 0, str.c_str(), -1, 0, 0);
+	wchar_t* buffer = new wchar_t[buffer_size];
+	MultiByteToWideChar(CP_UTF8, 0, str.c_str(), -1, buffer, buffer_size);
+	std::wstring str_wide(buffer);
+	delete[] buffer;
+	return str_wide;
+}
+
+IFC_PARSE_API bool IfcUtil::path::rename_file(const std::string& old_filename, const std::string& new_filename) {
+	std::wstring old_filename_w = from_utf8(old_filename);
+	std::wstring new_filename_w = from_utf8(new_filename);
+	delete_file(new_filename);
+	const bool success = !!MoveFileW(old_filename_w.c_str(), new_filename_w.c_str());
+	return success;
+}
+
+IFC_PARSE_API bool IfcUtil::path::delete_file(const std::string& filename) {
+	std::wstring filename_w = from_utf8(filename);
+	const bool success = !!DeleteFileW(filename_w.c_str());
+	return success;
+}
+
+#else
+
+IFC_PARSE_API bool IfcUtil::path::rename_file(const std::string& old_filename, const std::string& new_filename) {
+	// Whether or not rename() replaces an existing file is implementation-specific,
+	// so remove() possible existing file always.
+	delete_file(new_filename);
+	return std::rename(old_filename.c_str(), new_filename.c_str()) == 0;
+}
+
+IFC_PARSE_API bool IfcUtil::path::delete_file(const std::string& filename) {
+	return std::remove(filename.c_str());
+}
+
+#endif
+

src/ifcparse/utils.h

@@ -0,0 +1,59 @@
+/********************************************************************************
+*                                                                              *
+* This file is part of IfcOpenShell.                                           *
+*                                                                              *
+* IfcOpenShell is free software: you can redistribute it and/or modify         *
+* it under the terms of the Lesser GNU General Public License as published by  *
+* the Free Software Foundation, either version 3.0 of the License, or          *
+* (at your option) any later version.                                          *
+*                                                                              *
+* IfcOpenShell 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                 *
+* Lesser GNU General Public License for more details.                          *
+*                                                                              *
+* You should have received a copy of the Lesser GNU General Public License     *
+* along with this program. If not, see <http://www.gnu.org/licenses/>.         *
+*                                                                              *
+********************************************************************************/
+
+#include "../ifcparse/ifc_parse_api.h"
+
+#include <string>
+
+#ifndef IFCPARSE_UTILS_H
+#define IFCPARSE_UTILS_H
+
+namespace IfcUtil {
+
+	/// Replaces spaces and potentially other problem causing characters with underscores.
+	IFC_PARSE_API void sanitate_material_name(std::string &str);
+
+	IFC_PARSE_API void escape_xml(std::string &str);
+	IFC_PARSE_API void unescape_xml(std::string &str);
+
+	namespace path {
+
+		IFC_PARSE_API bool delete_file(const std::string& filename);
+		IFC_PARSE_API bool rename_file(const std::string& old_filename, const std::string& new_filename);
+		
+#ifdef _MSC_VER
+
+		/// Uses windows.h string conversion functions
+		IFC_PARSE_API std::string to_utf8(const std::wstring& str);
+
+		/// Uses windows.h string conversion functions
+		IFC_PARSE_API std::wstring from_utf8(const std::string& str);
+#else
+		/// Identity operation
+		IFC_PARSE_API inline std::string to_utf8(const std::string& str) { return str; }
+
+		/// Identity operation
+		IFC_PARSE_API inline std::string from_utf8(const std::string& str) { return str; }
+#endif
+
+	}
+
+}
+
+#endif