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Format money amount same way as server does.

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This commit is contained in:
John Preston 2021-03-30 19:24:14 +04:00
parent 8cac76931e
commit 21b502c754
1 changed files with 79 additions and 70 deletions
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149
Telegram/SourceFiles/ui/text/format_values.cpp
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@ -14,42 +14,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
#include <sstream> #include <sstream>
#include <iostream> #include <iostream>
[[nodiscard]] QString FormatWithSeparators(
double amount,
char decimal,
char thousands) {
Expects(decimal != 0);
// Thanks https://stackoverflow.com/a/5058949
struct FormattingHelper : std::numpunct<char> {
FormattingHelper(char decimal, char thousands)
: decimal(decimal)
, thousands(thousands) {
}
char do_decimal_point() const override { return decimal; }
char do_thousands_sep() const override { return thousands; }
char decimal = '.';
char thousands = ',';
};
auto stream = std::ostringstream();
auto helper = FormattingHelper(decimal, thousands ? thousands : '?');
stream.imbue(std::locale(stream.getloc(), &helper));
stream << std::fixed << amount;
auto result = QString::fromStdString(stream.str());
if (!thousands) {
result.replace('?', QString());
}
return result;
}
namespace Ui { namespace Ui {
namespace { namespace {
QString FormatTextWithReadyAndTotal( [[nodiscard]] QString FormatTextWithReadyAndTotal(
tr::phrase<lngtag_ready, lngtag_total, lngtag_mb> phrase, tr::phrase<lngtag_ready, lngtag_total, lngtag_mb> phrase,
qint64 ready, qint64 ready,
qint64 total) { qint64 total) {
@ -77,6 +45,40 @@ QString FormatTextWithReadyAndTotal(
return phrase(tr::now, lt_ready, readyStr, lt_total, totalStr, lt_mb, mb); return phrase(tr::now, lt_ready, readyStr, lt_total, totalStr, lt_mb, mb);
} }
[[nodiscard]] QString FormatWithSeparators(
double amount,
int precision,
char decimal,
char thousands) {
Expects(decimal != 0);
// Thanks https://stackoverflow.com/a/5058949
struct FormattingHelper : std::numpunct<char> {
FormattingHelper(char decimal, char thousands)
: decimal(decimal)
, thousands(thousands) {
}
char do_decimal_point() const override { return decimal; }
char do_thousands_sep() const override { return thousands; }
char decimal = '.';
char thousands = ',';
};
auto stream = std::ostringstream();
stream.imbue(std::locale(
stream.getloc(),
new FormattingHelper(decimal, thousands ? thousands : '?')));
stream.precision(precision);
stream << std::fixed << amount;
auto result = QString::fromStdString(stream.str());
if (!thousands) {
result.replace('?', QString());
}
return result;
}
} // namespace } // namespace
QString FormatSizeText(qint64 size) { QString FormatSizeText(qint64 size) {
@ -321,42 +323,42 @@ QString FillAmountAndCurrency(int64 amount, const QString &currency) {
}); });
return base::flat_map<QString, Rule>(begin(pairs), end(pairs)); return base::flat_map<QString, Rule>(begin(pairs), end(pairs));
}(); }();
static const auto kDenominators = base::flat_map<QString, int>{ static const auto kExponents = base::flat_map<QString, int>{
{ u"CLF"_q, 10000 }, { u"CLF"_q, 4 },
{ u"BHD"_q, 1000 }, { u"BHD"_q, 3 },
{ u"IQD"_q, 1000 }, { u"IQD"_q, 3 },
{ u"JOD"_q, 1000 }, { u"JOD"_q, 3 },
{ u"KWD"_q, 1000 }, { u"KWD"_q, 3 },
{ u"LYD"_q, 1000 }, { u"LYD"_q, 3 },
{ u"OMR"_q, 1000 }, { u"OMR"_q, 3 },
{ u"TND"_q, 1000 }, { u"TND"_q, 3 },
{ u"BIF"_q, 1 }, { u"BIF"_q, 0 },
{ u"BYR"_q, 1 }, { u"BYR"_q, 0 },
{ u"CLP"_q, 1 }, { u"CLP"_q, 0 },
{ u"CVE"_q, 1 }, { u"CVE"_q, 0 },
{ u"DJF"_q, 1 }, { u"DJF"_q, 0 },
{ u"GNF"_q, 1 }, { u"GNF"_q, 0 },
{ u"ISK"_q, 1 }, { u"ISK"_q, 0 },
{ u"JPY"_q, 1 }, { u"JPY"_q, 0 },
{ u"KMF"_q, 1 }, { u"KMF"_q, 0 },
{ u"KRW"_q, 1 }, { u"KRW"_q, 0 },
{ u"MGA"_q, 1 }, { u"MGA"_q, 0 },
{ u"PYG"_q, 1 }, { u"PYG"_q, 0 },
{ u"RWF"_q, 1 }, { u"RWF"_q, 0 },
{ u"UGX"_q, 1 }, { u"UGX"_q, 0 },
{ u"UYI"_q, 1 }, { u"UYI"_q, 0 },
{ u"VND"_q, 1 }, { u"VND"_q, 0 },
{ u"VUV"_q, 1 }, { u"VUV"_q, 0 },
{ u"XAF"_q, 1 }, { u"XAF"_q, 0 },
{ u"XOF"_q, 1 }, { u"XOF"_q, 0 },
{ u"XPF"_q, 1 }, { u"XPF"_q, 0 },
{ u"MRO"_q, 10 }, { u"MRO"_q, 1 },
}; };
const auto denominatorIt = kDenominators.find(currency); const auto exponentIt = kExponents.find(currency);
const auto denominator = (denominatorIt != end(kDenominators)) const auto exponent = (exponentIt != end(kExponents))
? denominatorIt->second ? exponentIt->second
: 100; : 2;
const auto value = amount / float64(denominator); const auto value = amount / std::pow(10., exponent);
const auto ruleIt = kRulesMap.find(currency); const auto ruleIt = kRulesMap.find(currency);
if (ruleIt == end(kRulesMap)) { if (ruleIt == end(kRulesMap)) {
return QLocale::system().toCurrencyString(value, currency); return QLocale::system().toCurrencyString(value, currency);
@ -370,8 +372,15 @@ QString FillAmountAndCurrency(int64 amount, const QString &currency) {
result.append(name); result.append(name);
if (rule.space) result.append(' '); if (rule.space) result.append(' ');
} }
result.append( const auto precision = (currency != u"IRR"_q
FormatWithSeparators(value, rule.decimal, rule.thousands)); || std::floor(value) != value)
? exponent
: 0;
result.append(FormatWithSeparators(
value,
precision,
rule.decimal,
rule.thousands));
if (!rule.left) { if (!rule.left) {
if (rule.space) result.append(' '); if (rule.space) result.append(' ');
result.append(name); result.append(name);