1 files changed, 107 insertions, 0 deletions
diff --git a/libdevcore/CommonData.cpp b/libdevcore/CommonData.cpp
new file mode 100644
index 00000000..fc438276
--- /dev/null
+++ b/libdevcore/CommonData.cpp
@@ -0,0 +1,107 @@
+/*
+	This file is part of cpp-ethereum.
+
+	cpp-ethereum is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	cpp-ethereum 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
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file CommonData.cpp
+ * @author Gav Wood <i@gavwood.com>
+ * @date 2014
+ */
+
+#include "CommonData.h"
+#include <random>
+
+#if defined(_MSC_VER)
+#pragma warning(push)
+#pragma warning(disable:4724) // potential mod by 0, line 78 of boost/random/uniform_int_distribution.hpp (boost 1.55)
+#endif
+#include <boost/random/uniform_int_distribution.hpp>
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+#include "Exceptions.h"
+using namespace std;
+using namespace dev;
+
+std::string dev::escaped(std::string const& _s, bool _all)
+{
+	static const map<char, char> prettyEscapes{{'\r', 'r'}, {'\n', 'n'}, {'\t', 't'}, {'\v', 'v'}};
+	std::string ret;
+	ret.reserve(_s.size() + 2);
+	ret.push_back('"');
+	for (auto i: _s)
+		if (i == '"' && !_all)
+			ret += "\\\"";
+		else if (i == '\\' && !_all)
+			ret += "\\\\";
+		else if (prettyEscapes.count(i) && !_all)
+		{
+			ret += '\\';
+			ret += prettyEscapes.find(i)->second;
+		}
+		else if (i < ' ' || _all)
+		{
+			ret += "\\x";
+			ret.push_back("0123456789abcdef"[(uint8_t)i / 16]);
+			ret.push_back("0123456789abcdef"[(uint8_t)i % 16]);
+		}
+		else
+			ret.push_back(i);
+	ret.push_back('"');
+	return ret;
+}
+
+int dev::fromHex(char _i, WhenError _throw)
+{
+	if (_i >= '0' && _i <= '9')
+		return _i - '0';
+	if (_i >= 'a' && _i <= 'f')
+		return _i - 'a' + 10;
+	if (_i >= 'A' && _i <= 'F')
+		return _i - 'A' + 10;
+	if (_throw == WhenError::Throw)
+		BOOST_THROW_EXCEPTION(BadHexCharacter() << errinfo_invalidSymbol(_i));
+	else
+		return -1;
+}
+
+bytes dev::fromHex(std::string const& _s, WhenError _throw)
+{
+	unsigned s = (_s.size() >= 2 && _s[0] == '0' && _s[1] == 'x') ? 2 : 0;
+	std::vector<uint8_t> ret;
+	ret.reserve((_s.size() - s + 1) / 2);
+
+	if (_s.size() % 2)
+	{
+		int h = fromHex(_s[s++], WhenError::DontThrow);
+		if (h != -1)
+			ret.push_back(h);
+		else if (_throw == WhenError::Throw)
+			BOOST_THROW_EXCEPTION(BadHexCharacter());
+		else
+			return bytes();
+	}
+	for (unsigned i = s; i < _s.size(); i += 2)
+	{
+		int h = fromHex(_s[i], WhenError::DontThrow);
+		int l = fromHex(_s[i + 1], WhenError::DontThrow);
+		if (h != -1 && l != -1)
+			ret.push_back((byte)(h * 16 + l));
+		else if (_throw == WhenError::Throw)
+			BOOST_THROW_EXCEPTION(BadHexCharacter());
+		else
+			return bytes();
+	}
+	return ret;
+}