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50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
#include <string>
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#include <common/terminalColors.h>
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std::string setColor(UInt64 hash)
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{
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/// Make a random RGB color that has constant brightness.
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/// https://en.wikipedia.org/wiki/YCbCr
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/// Note that this is darker than the middle relative luminance, see "Gamma_correction" and "Luma_(video)".
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/// It still looks awesome.
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UInt8 y = 128;
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UInt8 cb = hash % 256;
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UInt8 cr = hash / 256 % 256;
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UInt8 r = std::max(0.0, std::min(255.0, y + 1.402 * (cr - 128)));
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UInt8 g = std::max(0.0, std::min(255.0, y - 0.344136 * (cb - 128) - 0.714136 * (cr - 128)));
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UInt8 b = std::max(0.0, std::min(255.0, y + 1.772 * (cb - 128)));
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/// ANSI escape sequence to set 24-bit foreground font color in terminal.
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return "\033[38;2;" + std::to_string(r) + ";" + std::to_string(g) + ";" + std::to_string(b) + "m";
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}
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const char * setColorForLogPriority(int priority)
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{
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if (priority < 1 || priority > 8)
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return "";
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static const char * colors[] =
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{
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"",
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"\033[1;41m", /// Fatal
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"\033[7;31m", /// Critical
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"\033[1;31m", /// Error
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"\033[0;31m", /// Warning
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"\033[0;33m", /// Notice
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"\033[1m", /// Information
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"", /// Debug
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"\033[2m", /// Trace
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};
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return colors[priority];
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}
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const char * resetColor()
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{
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return "\033[0m";
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}
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