2016-06-07 08:23:15 +00:00
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#include <cmath>
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2017-04-01 09:19:00 +00:00
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#include <Common/formatReadable.h>
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#include <IO/DoubleConverter.h>
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#include <IO/WriteBufferFromString.h>
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#include <IO/WriteHelpers.h>
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2016-06-07 08:23:15 +00:00
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2020-02-25 18:20:08 +00:00
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int CANNOT_PRINT_FLOAT_OR_DOUBLE_NUMBER;
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}
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}
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2016-06-07 08:23:15 +00:00
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static void formatReadable(double size, DB::WriteBuffer & out, int precision, const char ** units, size_t units_size, double delimiter)
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{
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2017-04-01 07:20:54 +00:00
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size_t i = 0;
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for (; i + 1 < units_size && fabs(size) >= delimiter; ++i)
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size /= delimiter;
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2016-06-07 08:23:15 +00:00
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2017-04-01 07:20:54 +00:00
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DB::DoubleConverter<false>::BufferType buffer;
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double_conversion::StringBuilder builder{buffer, sizeof(buffer)};
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2016-06-07 08:23:15 +00:00
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2017-04-01 07:20:54 +00:00
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const auto result = DB::DoubleConverter<false>::instance().ToFixed(size, precision, &builder);
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2016-06-07 08:23:15 +00:00
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2017-04-01 07:20:54 +00:00
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if (!result)
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throw DB::Exception("Cannot print float or double number", DB::ErrorCodes::CANNOT_PRINT_FLOAT_OR_DOUBLE_NUMBER);
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2016-06-07 08:23:15 +00:00
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2017-04-01 07:20:54 +00:00
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out.write(buffer, builder.position());
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writeCString(units[i], out);
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2016-06-07 08:23:15 +00:00
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}
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void formatReadableSizeWithBinarySuffix(double value, DB::WriteBuffer & out, int precision)
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{
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2017-04-01 07:20:54 +00:00
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const char * units[] = {" B", " KiB", " MiB", " GiB", " TiB", " PiB", " EiB", " ZiB", " YiB"};
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formatReadable(value, out, precision, units, sizeof(units) / sizeof(units[0]), 1024);
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2016-06-07 08:23:15 +00:00
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}
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std::string formatReadableSizeWithBinarySuffix(double value, int precision)
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{
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2017-07-31 21:39:24 +00:00
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DB::WriteBufferFromOwnString out;
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2017-04-01 07:20:54 +00:00
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formatReadableSizeWithBinarySuffix(value, out, precision);
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2017-07-31 21:39:24 +00:00
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return out.str();
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2016-06-07 08:23:15 +00:00
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}
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void formatReadableSizeWithDecimalSuffix(double value, DB::WriteBuffer & out, int precision)
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{
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2017-04-01 07:20:54 +00:00
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const char * units[] = {" B", " KB", " MB", " GB", " TB", " PB", " EB", " ZB", " YB"};
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formatReadable(value, out, precision, units, sizeof(units) / sizeof(units[0]), 1000);
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2016-06-07 08:23:15 +00:00
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}
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std::string formatReadableSizeWithDecimalSuffix(double value, int precision)
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{
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2017-07-31 21:39:24 +00:00
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DB::WriteBufferFromOwnString out;
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2017-04-01 07:20:54 +00:00
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formatReadableSizeWithDecimalSuffix(value, out, precision);
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2017-07-31 21:39:24 +00:00
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return out.str();
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2016-06-07 08:23:15 +00:00
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}
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void formatReadableQuantity(double value, DB::WriteBuffer & out, int precision)
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{
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2017-04-01 07:20:54 +00:00
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const char * units[] = {"", " thousand", " million", " billion", " trillion", " quadrillion"};
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formatReadable(value, out, precision, units, sizeof(units) / sizeof(units[0]), 1000);
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2016-06-07 08:23:15 +00:00
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}
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std::string formatReadableQuantity(double value, int precision)
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{
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2017-07-31 21:39:24 +00:00
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DB::WriteBufferFromOwnString out;
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2017-04-01 07:20:54 +00:00
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formatReadableQuantity(value, out, precision);
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2017-07-31 21:39:24 +00:00
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return out.str();
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2016-06-07 08:23:15 +00:00
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}
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