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spdlog/sinks/ansicolor_sink-inl.h

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+// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+
+#pragma once
+
+#ifndef SPDLOG_HEADER_ONLY
+#    include <spdlog/sinks/ansicolor_sink.h>
+#endif
+
+#include <spdlog/pattern_formatter.h>
+#include <spdlog/details/os.h>
+
+namespace spdlog {
+namespace sinks {
+
+template<typename ConsoleMutex>
+SPDLOG_INLINE ansicolor_sink<ConsoleMutex>::ansicolor_sink(FILE *target_file, color_mode mode)
+    : target_file_(target_file)
+    , mutex_(ConsoleMutex::mutex())
+    , formatter_(details::make_unique<spdlog::pattern_formatter>())
+
+{
+    set_color_mode(mode);
+    colors_[level::trace] = to_string_(white);
+    colors_[level::debug] = to_string_(cyan);
+    colors_[level::info] = to_string_(green);
+    colors_[level::warn] = to_string_(yellow_bold);
+    colors_[level::err] = to_string_(red_bold);
+    colors_[level::critical] = to_string_(bold_on_red);
+    colors_[level::off] = to_string_(reset);
+}
+
+template<typename ConsoleMutex>
+SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::set_color(level::level_enum color_level, string_view_t color)
+{
+    std::lock_guard<mutex_t> lock(mutex_);
+    colors_[static_cast<size_t>(color_level)] = to_string_(color);
+}
+
+template<typename ConsoleMutex>
+SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::log(const details::log_msg &msg)
+{
+    // Wrap the originally formatted message in color codes.
+    // If color is not supported in the terminal, log as is instead.
+    std::lock_guard<mutex_t> lock(mutex_);
+    msg.color_range_start = 0;
+    msg.color_range_end = 0;
+    memory_buf_t formatted;
+    formatter_->format(msg, formatted);
+    if (should_do_colors_ && msg.color_range_end > msg.color_range_start)
+    {
+        // before color range
+        print_range_(formatted, 0, msg.color_range_start);
+        // in color range
+        print_ccode_(colors_[static_cast<size_t>(msg.level)]);
+        print_range_(formatted, msg.color_range_start, msg.color_range_end);
+        print_ccode_(reset);
+        // after color range
+        print_range_(formatted, msg.color_range_end, formatted.size());
+    }
+    else // no color
+    {
+        print_range_(formatted, 0, formatted.size());
+    }
+    fflush(target_file_);
+}
+
+template<typename ConsoleMutex>
+SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::flush()
+{
+    std::lock_guard<mutex_t> lock(mutex_);
+    fflush(target_file_);
+}
+
+template<typename ConsoleMutex>
+SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::set_pattern(const std::string &pattern)
+{
+    std::lock_guard<mutex_t> lock(mutex_);
+    formatter_ = std::unique_ptr<spdlog::formatter>(new pattern_formatter(pattern));
+}
+
+template<typename ConsoleMutex>
+SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::set_formatter(std::unique_ptr<spdlog::formatter> sink_formatter)
+{
+    std::lock_guard<mutex_t> lock(mutex_);
+    formatter_ = std::move(sink_formatter);
+}
+
+template<typename ConsoleMutex>
+SPDLOG_INLINE bool ansicolor_sink<ConsoleMutex>::should_color()
+{
+    return should_do_colors_;
+}
+
+template<typename ConsoleMutex>
+SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::set_color_mode(color_mode mode)
+{
+    switch (mode)
+    {
+    case color_mode::always:
+        should_do_colors_ = true;
+        return;
+    case color_mode::automatic:
+        should_do_colors_ = details::os::in_terminal(target_file_) && details::os::is_color_terminal();
+        return;
+    case color_mode::never:
+        should_do_colors_ = false;
+        return;
+    default:
+        should_do_colors_ = false;
+    }
+}
+
+template<typename ConsoleMutex>
+SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::print_ccode_(const string_view_t &color_code)
+{
+    fwrite(color_code.data(), sizeof(char), color_code.size(), target_file_);
+}
+
+template<typename ConsoleMutex>
+SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::print_range_(const memory_buf_t &formatted, size_t start, size_t end)
+{
+    fwrite(formatted.data() + start, sizeof(char), end - start, target_file_);
+}
+
+template<typename ConsoleMutex>
+SPDLOG_INLINE std::string ansicolor_sink<ConsoleMutex>::to_string_(const string_view_t &sv)
+{
+    return std::string(sv.data(), sv.size());
+}
+
+// ansicolor_stdout_sink
+template<typename ConsoleMutex>
+SPDLOG_INLINE ansicolor_stdout_sink<ConsoleMutex>::ansicolor_stdout_sink(color_mode mode)
+    : ansicolor_sink<ConsoleMutex>(stdout, mode)
+{}
+
+// ansicolor_stderr_sink
+template<typename ConsoleMutex>
+SPDLOG_INLINE ansicolor_stderr_sink<ConsoleMutex>::ansicolor_stderr_sink(color_mode mode)
+    : ansicolor_sink<ConsoleMutex>(stderr, mode)
+{}
+
+} // namespace sinks
+} // namespace spdlog