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96 lines
2.4 KiB
C++
96 lines
2.4 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "info/channel_statistics/earn/earn_format.h"
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#include <QtCore/QLocale>
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namespace Info::ChannelEarn {
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namespace {
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constexpr auto kMinorPartLength = 9;
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constexpr auto kMaxChoppedZero = kMinorPartLength - 2;
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constexpr auto kZero = QChar('0');
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const auto DecimalPoint = QString() + QLocale().decimalPoint();
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using EarnInt = Data::EarnInt;
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} // namespace
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QString MajorPart(EarnInt value) {
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const auto string = QString::number(value);
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const auto diff = int(string.size()) - kMinorPartLength;
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return (diff <= 0) ? QString(kZero) : string.mid(0, diff);
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}
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QString MajorPart(CreditsAmount value) {
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return QString::number(int64(value.value()));
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}
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QString MinorPart(EarnInt value) {
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if (!value) {
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return DecimalPoint + kZero + kZero;
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}
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const auto string = QString::number(value);
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const auto diff = int(string.size()) - kMinorPartLength;
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const auto result = (diff < 0)
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? DecimalPoint + u"%1"_q.arg(0, std::abs(diff), 10, kZero) + string
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: DecimalPoint + string.mid(diff);
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const auto begin = (result.constData());
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const auto end = (begin + result.size());
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auto ch = end - 1;
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auto zeroCount = 0;
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while (ch != begin) {
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if (((*ch) == kZero) && (zeroCount < kMaxChoppedZero)) {
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zeroCount++;
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} else {
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break;
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}
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ch--;
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}
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return result.chopped(zeroCount);
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}
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QString MinorPart(CreditsAmount value) {
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static const int DecimalPointLength = DecimalPoint.length();
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const auto fractional = std::abs(int(value.value() * 100)) % 100;
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auto result = QString(DecimalPointLength + 2, Qt::Uninitialized);
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for (int i = 0; i < DecimalPointLength; ++i) {
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result[i] = DecimalPoint[i];
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}
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result[DecimalPointLength] = QChar('0' + fractional / 10);
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result[DecimalPointLength + 1] = QChar('0' + fractional % 10);
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return result;
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}
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QString ToUsd(
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Data::EarnInt value,
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float64 rate,
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int afterFloat) {
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return ToUsd(CreditsAmount(value), rate, afterFloat);
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}
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QString ToUsd(
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CreditsAmount value,
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float64 rate,
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int afterFloat) {
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constexpr auto kApproximately = QChar(0x2248);
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return QString(kApproximately)
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+ QChar('$')
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+ QLocale().toString(
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value.value() * rate,
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'f',
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afterFloat ? afterFloat : 2);
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}
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} // namespace Info::ChannelEarn
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