1 files changed, 252 insertions, 0 deletions
diff --git a/vendor/github.com/dexon-foundation/mcl/include/cybozu/exception.hpp b/vendor/github.com/dexon-foundation/mcl/include/cybozu/exception.hpp
new file mode 100644
index 000000000..247ba4de0
--- /dev/null
+++ b/vendor/github.com/dexon-foundation/mcl/include/cybozu/exception.hpp
@@ -0,0 +1,252 @@
+#pragma once
+/**
+	@file
+	@brief definition of abstruct exception class
+	@author MITSUNARI Shigeo(@herumi)
+*/
+#ifdef CYBOZU_MINIMUM_EXCEPTION
+
+#include <cybozu/inttype.hpp>
+
+namespace cybozu {
+
+namespace exception {
+inline const char *makeString(const char *, size_t)
+{
+	return "";
+}
+
+} // cybozu::exception
+
+class Exception {
+public:
+	explicit Exception(const char* = 0, bool = true)
+	{
+	}
+	~Exception() CYBOZU_NOEXCEPT {}
+	const char *what() const CYBOZU_NOEXCEPT { return "cybozu:Exception"; }
+	template<class T>
+	Exception& operator<<(const T&)
+	{
+		return *this;
+	}
+};
+
+} // cybozu
+
+#else
+
+#include <string>
+#include <algorithm>
+#include <sstream>
+#include <errno.h>
+#include <stdio.h>
+#ifdef _WIN32
+	#include <winsock2.h>
+	#include <windows.h>
+#else
+	#include <string.h> // for strerror_r
+#endif
+#include <cybozu/inttype.hpp>
+#ifdef CYBOZU_EXCEPTION_WITH_STACKTRACE
+	#include <cybozu/stacktrace.hpp>
+#endif
+
+namespace cybozu {
+
+const bool DontThrow = true;
+
+namespace exception {
+
+/* get max 16 characters to avoid buffer overrun */
+inline std::string makeString(const char *str, size_t size)
+{
+	return std::string(str, std::min<size_t>(size, 16));
+}
+
+#ifdef _WIN32
+inline std::string wstr2str(const std::wstring& wstr)
+{
+	std::string str;
+	for (size_t i = 0; i < wstr.size(); i++) {
+		uint16_t c = wstr[i];
+		if (c < 0x80) {
+			str += char(c);
+		} else {
+			char buf[16];
+			CYBOZU_SNPRINTF(buf, sizeof(buf), "\\u%04x", c);
+			str += buf;
+		}
+	}
+	return str;
+}
+#endif
+
+} // cybozu::exception
+
+/**
+	convert errno to string
+	@param err [in] errno
+	@note for both windows and linux
+*/
+inline std::string ConvertErrorNoToString(int err)
+{
+	char errBuf[256];
+	std::string ret;
+#ifdef _WIN32
+	if (strerror_s(errBuf, sizeof(errBuf), err) == 0) {
+		ret = errBuf;
+	} else {
+		ret = "err";
+	}
+#elif defined(_GNU_SOURCE)
+	ret = ::strerror_r(err, errBuf, sizeof(errBuf));
+#else
+	if (strerror_r(err, errBuf, sizeof(errBuf)) == 0) {
+		ret = errBuf;
+	} else {
+		ret = "err";
+	}
+#endif
+	char buf2[64];
+	CYBOZU_SNPRINTF(buf2, sizeof(buf2), "(%d)", err);
+	ret += buf2;
+	return ret;
+}
+
+class Exception : public std::exception {
+	mutable std::string str_;
+#ifdef CYBOZU_EXCEPTION_WITH_STACKTRACE
+	mutable std::string stackTrace_;
+#endif
+public:
+	explicit Exception(const std::string& name = "", bool enableStackTrace = true)
+		: str_(name)
+	{
+#ifdef CYBOZU_EXCEPTION_WITH_STACKTRACE
+		if (enableStackTrace) stackTrace_ = cybozu::StackTrace().toString();
+#else
+		cybozu::disable_warning_unused_variable(enableStackTrace);
+#endif
+	}
+	~Exception() CYBOZU_NOEXCEPT {}
+	const char *what() const CYBOZU_NOEXCEPT { return toString().c_str(); }
+	const std::string& toString() const CYBOZU_NOEXCEPT
+	{
+#ifdef CYBOZU_EXCEPTION_WITH_STACKTRACE
+		try {
+			if (!stackTrace_.empty()) {
+#ifdef CYBOZU_STACKTRACE_ONELINE
+				str_ += "\n<<<STACKTRACE>>> ";
+				str_ += stackTrace_;
+#else
+				str_ += "\n<<<STACKTRACE\n";
+				str_ += stackTrace_;
+				str_ += "\n>>>STACKTRACE";
+#endif
+			}
+		} catch (...) {
+		}
+		stackTrace_.clear();
+#endif
+		return str_;
+	}
+	Exception& operator<<(const char *s)
+	{
+		str_ += ':';
+		str_ += s;
+		return *this;
+	}
+	Exception& operator<<(const std::string& s)
+	{
+		return operator<<(s.c_str());
+	}
+#ifdef _WIN32
+	Exception& operator<<(const std::wstring& s)
+	{
+		return operator<<(cybozu::exception::wstr2str(s));
+	}
+#endif
+	template<class T>
+	Exception& operator<<(const T& x)
+	{
+		std::ostringstream os;
+		os << x;
+		return operator<<(os.str());
+	}
+};
+
+class ErrorNo {
+public:
+#ifdef _WIN32
+	typedef unsigned int NativeErrorNo;
+#else
+	typedef int NativeErrorNo;
+#endif
+	explicit ErrorNo(NativeErrorNo err)
+		: err_(err)
+	{
+	}
+	ErrorNo()
+		: err_(getLatestNativeErrorNo())
+	{
+	}
+	NativeErrorNo getLatestNativeErrorNo() const
+	{
+#ifdef _WIN32
+		return ::GetLastError();
+#else
+		return errno;
+#endif
+	}
+	/**
+		convert NativeErrNo to string(maybe UTF8)
+		@param err [in] errno
+		@note Linux   : same as ConvertErrorNoToString
+			  Windows : for Win32 API(use en-us)
+	*/
+	std::string toString() const
+	{
+#ifdef _WIN32
+		const int msgSize = 256;
+		wchar_t msg[msgSize];
+		int size = FormatMessageW(
+			FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+			0,
+			err_,
+			MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US),
+			msg,
+			msgSize,
+			NULL
+		);
+		if (size <= 0) return "";
+		// remove last "\r\n"
+		if (size > 2 && msg[size - 2] == '\r') {
+			msg[size - 2] = 0;
+			size -= 2;
+		}
+		std::string ret;
+		ret.resize(size);
+		// assume ascii only
+		for (int i = 0; i < size; i++) {
+			ret[i] = (char)msg[i];
+		}
+		char buf2[64];
+		CYBOZU_SNPRINTF(buf2, sizeof(buf2), "(%u)", err_);
+		ret += buf2;
+		return ret;
+#else
+		return ConvertErrorNoToString(err_);
+#endif
+	}
+private:
+	NativeErrorNo err_;
+};
+
+inline std::ostream& operator<<(std::ostream& os, const cybozu::ErrorNo& self)
+{
+	return os << self.toString();
+}
+
+} // cybozu
+#endif