[core] : mona_string 関連の定義を行うstring.hppを追加

diff --git a/core/include/string.hpp b/core/include/string.hpp
new file mode 100644 (file)
index 0000000..738409c
--- /dev/null
+++ b/core/include/string.hpp
@@ -0,0 +1,115 @@
+//
+//  string.hpp
+//  core
+//
+//  Created by caprice on 2013/08/05.
+//
+
+#ifndef core_string_hpp
+#define core_string_hpp
+
+#include <string>
+
+#include <boost/utility/string_ref.hpp>
+
+#include <wx/string.h>
+
+// このコンパイラの char16_t、char32_t を UTF-16/32 を表現するか？
+#if !(__STDC_UTF_16__)
+    #error "sorry, this compiler does not support utf-16."
+#endif
+
+#if !(__STDC_UTF_32__)
+    #error "sorry, this compiler does not support utf-32."
+#endif
+
+namespace monazilla { namespace GikoMona {
+    
+template <typename CharT>
+using basic_string_ref = boost::basic_string_ref<CharT, std::char_traits<CharT>>;
+    
+typedef char u8_char;
+typedef std::basic_string<u8_char> u8_string;
+typedef basic_string_ref<u8_char> u8_string_ref;
+    
+typedef u8_string mona_string;
+typedef basic_string_ref<u8_char> mona_string_ref;
+
+typedef char sjis_char;
+typedef std::basic_string<sjis_char> sjis_string;
+typedef basic_string_ref<sjis_char> sjis_string_ref;
+
+// to...
+u8_string convert_to_u8(const mona_string_ref& src);
+sjis_string convert_to_sjis(const mona_string_ref& src);
+
+std::u16string convert_to_u16(const mona_string_ref& src);
+std::u32string convert_to_u32(const mona_string_ref& src);
+std::string convert_to_std_str(const mona_string_ref& src);
+std::wstring convert_to_std_wstr(const mona_string_ref& src);
+
+wxString convert_to_wx(const mona_string_ref& src) {
+    return wxString(src.data());
+}
+
+// from...
+mona_string convert_from(const u8_string_ref& src);
+mona_string convert_from(const sjis_string_ref& src);
+    
+mona_string convert_from(const basic_string_ref<char16_t>& src);
+mona_string convert_from(const basic_string_ref<char32_t>& src);
+mona_string convert_from(const basic_string_ref<std::string::value_type>& src);
+mona_string convert_from(const basic_string_ref<std::wstring::value_type>& src);
+    
+mona_string convert_from(const wxString& src);
+
+// converter
+template <typename Other>
+class converter_impl {
+public:
+    typedef typename Other::value_type char_type;
+    typedef basic_string_ref<char_type> string_ref_type;
+    
+    mona_string from(const string_ref_type& src) const { return convert_from(src); }
+};
+
+template <typename Other, bool U8_is_Sjis = std::is_same<u8_string, sjis_string>::value>
+class converter {};
+
+template <>
+class converter <u8_string, false>  : public converter_impl<u8_string> {
+public:
+    char_type to(const mona_string_ref& src) const { return convert_to_u8(src); }
+};
+
+template <>
+class converter <sjis_string, false> : public converter_impl<sjis_string> {
+public:
+    char_type to(const mona_string_ref& src) const { return convert_to_sjis(src); }
+};
+
+template <>
+class converter <u8_string, true> : public converter_impl<u8_string> {
+public:
+    char_type to_u8(const mona_string_ref& src) const { return convert_to_u8(src); }
+    char_type to_sjis(const mona_string_ref& src) const { return convert_to_sjis(src); }
+    char_type to(const mona_string_ref&) const {
+        static_assert(false, "std::is_same<u8_string, sjis_string>::value == true.");
+    }
+};
+
+template <bool Value>
+class converter <std::u16string, Value> : public converter_impl<std::u16string> {
+public:
+    char_type to(const mona_string_ref& src) const { return convert_to_u16(src); }
+};
+
+template <bool Value>
+class converter <std::u32string, Value> : public converter_impl<std::u32string> {
+public:
+    char_type to(const mona_string_ref& src) const { return convert_to_u32(src); }
+};
+
+}
+}
+#endif