Initial release

engine/vendor/vst3sdk/public.sdk/source/vst/utility/stringconvert.cpp

@@ -0,0 +1,136 @@
+//-----------------------------------------------------------------------------
+// Project     : VST SDK
+//
+// Category    : Helpers
+// Filename    : public.sdk/source/vst/utility/stringconvert.cpp
+// Created by  : Steinberg, 11/2014
+// Description : c++11 unicode string convert functions
+//
+//-----------------------------------------------------------------------------
+// This file is part of a Steinberg SDK. It is subject to the license terms
+// in the LICENSE file found in the top-level directory of this distribution
+// and at www.steinberg.net/sdklicenses.
+// No part of the SDK, including this file, may be copied, modified, propagated,
+// or distributed except according to the terms contained in the LICENSE file.
+//-----------------------------------------------------------------------------
+
+#include "pluginterfaces/base/fplatform.h"
+
+#if SMTG_OS_WINDOWS
+#ifndef _SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING
+#define _SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING
+#endif
+#endif // SMTG_OS_WINDOWS
+
+#include "public.sdk/source/vst/utility/stringconvert.h"
+#include "public.sdk/source/common/commonstringconvert.h"
+
+#include <codecvt>
+#include <istream>
+#include <locale>
+
+namespace Steinberg {
+namespace Vst {
+namespace StringConvert {
+
+//------------------------------------------------------------------------
+namespace {
+
+#if defined(_MSC_VER) && _MSC_VER >= 1900
+#define USE_WCHAR_AS_UTF16TYPE
+using UTF16Type = wchar_t;
+#else
+using UTF16Type = char16_t;
+#endif
+
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+#elif defined(_MSC_VER)
+#pragma warning(push)
+#pragma warning(disable : 4996)
+#endif
+
+using Converter = std::wstring_convert<std::codecvt_utf8_utf16<UTF16Type>, UTF16Type>;
+
+//------------------------------------------------------------------------
+Converter& converter ()
+{
+	static Converter conv;
+	return conv;
+}
+
+#ifdef __clang__
+#pragma clang diagnostic pop
+#elif defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+
+//------------------------------------------------------------------------
+} // anonymous
+
+//------------------------------------------------------------------------
+std::u16string convert (const std::string& utf8Str)
+{
+	return Steinberg::StringConvert::convert (utf8Str);
+}
+
+//------------------------------------------------------------------------
+bool convert (const std::string& utf8Str, Steinberg::Vst::String128 str)
+{
+	return convert (utf8Str, str, 128);
+}
+
+//------------------------------------------------------------------------
+bool convert (const std::string& utf8Str, Steinberg::Vst::TChar* str, uint32_t maxCharacters)
+{
+	auto ucs2 = convert (utf8Str);
+	if (ucs2.length () < maxCharacters)
+	{
+		ucs2.copy (reinterpret_cast<char16_t*> (str), ucs2.length ());
+		str[ucs2.length ()] = 0;
+		return true;
+	}
+	return false;
+}
+
+//------------------------------------------------------------------------
+std::string convert (const Steinberg::Vst::TChar* str)
+{
+	return converter ().to_bytes (reinterpret_cast<const UTF16Type*> (str));
+}
+
+//------------------------------------------------------------------------
+std::string convert (const Steinberg::Vst::TChar* str, uint32_t max)
+{
+	std::string result;
+	if (str)
+	{
+		Steinberg::Vst::TChar tmp[2] {};
+		for (uint32_t i = 0; i < max; ++i, ++str)
+		{
+			tmp[0] = *str;
+			if (tmp[0] == 0)
+				break;
+			result += convert (tmp);
+		}
+	}
+	return result;
+}
+
+//------------------------------------------------------------------------
+std::string convert (const std::u16string& str)
+{
+	return Steinberg::StringConvert::convert (str);
+}
+
+//------------------------------------------------------------------------
+std::string convert (const char* str, uint32_t max)
+{
+	return Steinberg::StringConvert::convert (str, max);
+}
+
+//------------------------------------------------------------------------
+} // StringConvert
+} // Vst
+} // Steinberg