Restructure and rename

src/ifcparse/character_decoder.h

@@ -0,0 +1,83 @@
+/********************************************************************************
+ *                                                                              *
+ * 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/>.         *
+ *                                                                              *
+********************************************************************************/
+
+/********************************************************************************
+ *                                                                               *
+ * Implementation of character decoding as described in ISO 10303-21 table 2 and *
+ * table 4                                                                       *
+ *                                                                               *
+ ********************************************************************************/
+
+#ifndef IFCCHARACTERDECODER_H
+#define IFCCHARACTERDECODER_H
+
+#include "file_reader.h"
+
+#include <string>
+
+namespace ifcopenshell {
+IFC_PARSE_API std::u32string::value_type convert_codepage(int codepage, int index);
+IFC_PARSE_API std::string convert_utf8(const std::u32string& string);
+IFC_PARSE_API std::u32string convert_utf8(const std::string& string);
+} // namespace ifcopenshell
+
+namespace ifcopenshell {
+
+template <typename Reader>
+class IFC_PARSE_API character_decoder {
+  private:
+    Reader* stream_;
+    int codepage_;
+    std::u32string builder_;
+
+  public:
+    enum ConversionMode {
+        SUBSTITUTE,
+        UTF8,
+        ESCAPE
+    };
+    inline static ConversionMode mode = UTF8;
+    inline static char substitution_character = '_';
+
+    character_decoder(Reader* stream);
+    ~character_decoder();
+    // Gets a decoded string representation at the token stream
+    // read pointer and advances the underlying token stream.
+    operator std::string();
+    // Gets a decoded string representation at the offset provided,
+    // does not mutate the underlying token stream read pointer.
+    std::string get(size_t&);
+};
+
+} // namespace ifcopenshell
+
+namespace ifcopenshell {
+
+class IFC_PARSE_API character_encoder {
+  private:
+    std::u32string str_;
+
+  public:
+    character_encoder(const std::string& input);
+    operator std::string();
+};
+
+} // namespace IfcWrite
+
+#endif