diff options
Diffstat (limited to 'libtransport/includes/hicn/transport/utils/color.h')
| -rw-r--r-- | libtransport/includes/hicn/transport/utils/color.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/libtransport/includes/hicn/transport/utils/color.h b/libtransport/includes/hicn/transport/utils/color.h new file mode 100644 index 000000000..3e8d93e14 --- /dev/null +++ b/libtransport/includes/hicn/transport/utils/color.h @@ -0,0 +1,95 @@ +/* + * Copyright (c) 2021 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#pragma once + +#include <array> +#include <ostream> +#include <random> +#include <sstream> + +namespace utils { + +#define foreach_modifier \ + _(RESET, 0) \ + _(BOLD, 1) \ + _(FG_DEFAULT, 39) \ + _(FG_BLACK, 30) \ + _(FG_RED, 31) \ + _(FG_GREEN, 32) \ + _(FG_YELLOW, 33) \ + _(FG_BLUE, 34) \ + _(FG_MAGENTA, 35) \ + _(FG_CYAN, 36) \ + _(FG_LIGHT_GRAY, 37) \ + _(FG_DARK_GRAY, 90) \ + _(FG_LIGHT_RED, 91) \ + _(FG_LIGHT_GREEN, 92) \ + _(FG_LIGHT_YELLOW, 93) \ + _(FG_LIGHT_BLUE, 94) \ + _(FG_LIGHT_MAGENTA, 95) \ + _(FG_LIGHT_CYAN, 96) \ + _(FG_WHITE, 97) \ + _(BG_RED, 41) \ + _(BG_GREEN, 42) \ + _(BG_BLUE, 44) \ + _(BG_DEFAULT, 49) + +class ColorModifier { + static inline const std::size_t n_modifiers = 23; + static inline const char format_string_start[] = "\033["; + static inline const char format_string_end[] = "m"; + + public: + enum class Code { +#define _(name, value) name = value, + foreach_modifier +#undef _ + }; + + static inline std::array<Code, n_modifiers> code_array = { +#define _(name, value) Code::name, + foreach_modifier +#undef _ + }; + + static Code getRandomModifier() { + static std::random_device rd; + static std::mt19937 gen(rd()); + static std::uniform_int_distribution<> distr(4, 17); + + return code_array[distr(gen)]; + } + + ColorModifier(Code code) : code_(code), color_string_() { + std::stringstream ss; + if (std::getenv("COLORTERM") != nullptr) { + ss << format_string_start << static_cast<int>(code_) << format_string_end; + color_string_ = ss.str(); + } + } + + ColorModifier() : ColorModifier(getRandomModifier()) {} + + friend std::ostream& operator<<(std::ostream& os, const ColorModifier& mod) { + return os << mod.color_string_; + } + + private: + Code code_; + std::string color_string_; +}; + +} // namespace utils
\ No newline at end of file |