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libdevcore: Introduces a generalized AnsiColorized, an improved FormattedScope

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a future commit/PR could replace existing code to use AnsiColorized and
remove the old implementation of FormattedScope.
This commit is contained in:
Christian Parpart 2019-02-01 15:39:18 +01:00 committed by chriseth
parent caecdfabc5
commit ef6a76ce67
2 changed files with 92 additions and 0 deletions
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91
libdevcore/AnsiColorized.h Normal file
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/*
This file is part of solidity.
solidity 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.
solidity 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 solidity. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <ostream>
#include <vector>
namespace dev
{
namespace formatting
{
// control codes
static constexpr char const* RESET = "\033[0m";
static constexpr char const* INVERSE = "\033[7m";
static constexpr char const* BOLD = "\033[1m";
static constexpr char const* BRIGHT = BOLD;
// standard foreground colors
static constexpr char const* BLACK = "\033[30m";
static constexpr char const* RED = "\033[31m";
static constexpr char const* GREEN = "\033[32m";
static constexpr char const* YELLOW = "\033[33m";
static constexpr char const* BLUE = "\033[34m";
static constexpr char const* MAGENTA = "\033[35m";
static constexpr char const* CYAN = "\033[36m";
static constexpr char const* WHITE = "\033[37m";
// standard background colors
static constexpr char const* BLACK_BACKGROUND = "\033[40m";
static constexpr char const* RED_BACKGROUND = "\033[41m";
static constexpr char const* GREEN_BACKGROUND = "\033[42m";
static constexpr char const* YELLOW_BACKGROUND = "\033[43m";
static constexpr char const* BLUE_BACKGROUND = "\033[44m";
static constexpr char const* MAGENTA_BACKGROUND = "\033[45m";
static constexpr char const* CYAN_BACKGROUND = "\033[46m";
static constexpr char const* WHITE_BACKGROUND = "\033[47m";
// 256-bit-colors (incomplete set)
static constexpr char const* RED_BACKGROUND_256 = "\033[48;5;160m";
static constexpr char const* ORANGE_BACKGROUND_256 = "\033[48;5;166m";
}
/// AnsiColorized provides a convenience helper to colorize ostream with formatting-reset assured.
class AnsiColorized
{
public:
AnsiColorized(std::ostream& _os, bool const _enabled, std::vector<char const*>&& _formatting):
m_stream{_os}, m_enabled{_enabled}, m_codes{std::move(_formatting)}
{
if (m_enabled)
for (auto const& code: m_codes)
m_stream << code;
}
~AnsiColorized()
{
if (m_enabled)
m_stream << formatting::RESET;
}
template <typename T>
std::ostream& operator<<(T&& _t)
{
return m_stream << std::forward<T>(_t);
}
private:
std::ostream& m_stream;
bool m_enabled;
std::vector<char const*> m_codes;
};
}

1
libdevcore/CMakeLists.txt
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@ -1,5 +1,6 @@
set(sources
Algorithms.h
AnsiColorized.h
Assertions.h
Common.h
CommonData.cpp