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More chrono padding (#4161)
* Add padding modifier to day of year, duration's remains unpadded * Add padding modifier for %m, %Y
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Khanh H
GitHub
parent
55a0a9cd62
commit
ed8f8be70d
@ -711,7 +711,7 @@ The available padding modifiers (*padding_modifier*) are:
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| `'0'` | Pad a numeric result string with zeros. |
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These modifiers are only supported for the `'H'`, `'I'`, `'M'`, `'S'`, `'U'`,
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`'V'` and `'W'` presentation types.
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`'V'`, `'W'`, `'m'`, `'j'`, `'Y'` presentation types.
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## Range Format Specifications
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@ -760,7 +760,7 @@ FMT_CONSTEXPR auto parse_chrono_format(const Char* begin, const Char* end,
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break;
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}
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// Year:
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case 'Y': handler.on_year(numeric_system::standard); break;
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case 'Y': handler.on_year(numeric_system::standard, pad); break;
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case 'y': handler.on_short_year(numeric_system::standard); break;
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case 'C': handler.on_century(numeric_system::standard); break;
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case 'G': handler.on_iso_week_based_year(); break;
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@ -774,7 +774,7 @@ FMT_CONSTEXPR auto parse_chrono_format(const Char* begin, const Char* end,
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case 'b':
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case 'h': handler.on_abbr_month(); break;
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case 'B': handler.on_full_month(); break;
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case 'm': handler.on_dec_month(numeric_system::standard); break;
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case 'm': handler.on_dec_month(numeric_system::standard, pad); break;
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// Day of the year/month:
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case 'U':
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handler.on_dec0_week_of_year(numeric_system::standard, pad);
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@ -783,7 +783,7 @@ FMT_CONSTEXPR auto parse_chrono_format(const Char* begin, const Char* end,
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handler.on_dec1_week_of_year(numeric_system::standard, pad);
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break;
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case 'V': handler.on_iso_week_of_year(numeric_system::standard, pad); break;
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case 'j': handler.on_day_of_year(); break;
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case 'j': handler.on_day_of_year(pad); break;
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case 'd': handler.on_day_of_month(numeric_system::standard, pad); break;
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case 'e':
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handler.on_day_of_month(numeric_system::standard, pad_type::space);
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@ -812,7 +812,7 @@ FMT_CONSTEXPR auto parse_chrono_format(const Char* begin, const Char* end,
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if (ptr == end) FMT_THROW(format_error("invalid format"));
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c = *ptr++;
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switch (c) {
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case 'Y': handler.on_year(numeric_system::alternative); break;
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case 'Y': handler.on_year(numeric_system::alternative, pad); break;
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case 'y': handler.on_offset_year(); break;
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case 'C': handler.on_century(numeric_system::alternative); break;
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case 'c': handler.on_datetime(numeric_system::alternative); break;
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@ -828,7 +828,7 @@ FMT_CONSTEXPR auto parse_chrono_format(const Char* begin, const Char* end,
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c = *ptr++;
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switch (c) {
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case 'y': handler.on_short_year(numeric_system::alternative); break;
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case 'm': handler.on_dec_month(numeric_system::alternative); break;
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case 'm': handler.on_dec_month(numeric_system::alternative, pad); break;
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case 'U':
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handler.on_dec0_week_of_year(numeric_system::alternative, pad);
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break;
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@ -866,7 +866,7 @@ template <typename Derived> struct null_chrono_spec_handler {
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FMT_CONSTEXPR void unsupported() {
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static_cast<Derived*>(this)->unsupported();
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}
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FMT_CONSTEXPR void on_year(numeric_system) { unsupported(); }
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FMT_CONSTEXPR void on_year(numeric_system, pad_type) { unsupported(); }
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FMT_CONSTEXPR void on_short_year(numeric_system) { unsupported(); }
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FMT_CONSTEXPR void on_offset_year() { unsupported(); }
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FMT_CONSTEXPR void on_century(numeric_system) { unsupported(); }
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@ -878,7 +878,7 @@ template <typename Derived> struct null_chrono_spec_handler {
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FMT_CONSTEXPR void on_dec1_weekday(numeric_system) { unsupported(); }
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FMT_CONSTEXPR void on_abbr_month() { unsupported(); }
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FMT_CONSTEXPR void on_full_month() { unsupported(); }
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FMT_CONSTEXPR void on_dec_month(numeric_system) { unsupported(); }
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FMT_CONSTEXPR void on_dec_month(numeric_system, pad_type) { unsupported(); }
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FMT_CONSTEXPR void on_dec0_week_of_year(numeric_system, pad_type) {
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unsupported();
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}
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@ -888,7 +888,7 @@ template <typename Derived> struct null_chrono_spec_handler {
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FMT_CONSTEXPR void on_iso_week_of_year(numeric_system, pad_type) {
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unsupported();
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}
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FMT_CONSTEXPR void on_day_of_year() { unsupported(); }
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FMT_CONSTEXPR void on_day_of_year(pad_type) { unsupported(); }
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FMT_CONSTEXPR void on_day_of_month(numeric_system, pad_type) {
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unsupported();
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}
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@ -916,7 +916,7 @@ struct tm_format_checker : null_chrono_spec_handler<tm_format_checker> {
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template <typename Char>
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FMT_CONSTEXPR void on_text(const Char*, const Char*) {}
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FMT_CONSTEXPR void on_year(numeric_system) {}
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FMT_CONSTEXPR void on_year(numeric_system, pad_type) {}
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FMT_CONSTEXPR void on_short_year(numeric_system) {}
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FMT_CONSTEXPR void on_offset_year() {}
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FMT_CONSTEXPR void on_century(numeric_system) {}
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@ -928,11 +928,11 @@ struct tm_format_checker : null_chrono_spec_handler<tm_format_checker> {
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FMT_CONSTEXPR void on_dec1_weekday(numeric_system) {}
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FMT_CONSTEXPR void on_abbr_month() {}
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FMT_CONSTEXPR void on_full_month() {}
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FMT_CONSTEXPR void on_dec_month(numeric_system) {}
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FMT_CONSTEXPR void on_dec_month(numeric_system, pad_type) {}
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FMT_CONSTEXPR void on_dec0_week_of_year(numeric_system, pad_type) {}
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FMT_CONSTEXPR void on_dec1_week_of_year(numeric_system, pad_type) {}
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FMT_CONSTEXPR void on_iso_week_of_year(numeric_system, pad_type) {}
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FMT_CONSTEXPR void on_day_of_year() {}
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FMT_CONSTEXPR void on_day_of_year(pad_type) {}
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FMT_CONSTEXPR void on_day_of_month(numeric_system, pad_type) {}
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FMT_CONSTEXPR void on_24_hour(numeric_system, pad_type) {}
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FMT_CONSTEXPR void on_12_hour(numeric_system, pad_type) {}
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@ -1223,27 +1223,25 @@ class tm_writer {
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}
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}
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void write_year_extended(long long year) {
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void write_year_extended(long long year, pad_type pad) {
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// At least 4 characters.
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int width = 4;
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if (year < 0) {
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*out_++ = '-';
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bool negative = year < 0;
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if (negative) {
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year = 0 - year;
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--width;
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}
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uint32_or_64_or_128_t<long long> n = to_unsigned(year);
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const int num_digits = count_digits(n);
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if (width > num_digits)
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out_ = detail::fill_n(out_, width - num_digits, '0');
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if (negative && pad == pad_type::zero) *out_++ = '-';
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if (width > num_digits) {
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out_ = detail::write_padding(out_, pad, width - num_digits);
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}
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if (negative && pad != pad_type::zero) *out_++ = '-';
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out_ = format_decimal<Char>(out_, n, num_digits);
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}
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void write_year(long long year) {
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if (year >= 0 && year < 10000) {
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write2(static_cast<int>(year / 100));
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write2(static_cast<int>(year % 100));
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} else {
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write_year_extended(year);
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}
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void write_year(long long year, pad_type pad) {
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write_year_extended(year, pad);
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}
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void write_utc_offset(long offset, numeric_system ns) {
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@ -1367,7 +1365,7 @@ class tm_writer {
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*out_++ = ' ';
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on_iso_time();
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*out_++ = ' ';
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on_year(numeric_system::standard);
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on_year(numeric_system::standard, pad_type::space);
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} else {
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format_localized('c', ns == numeric_system::standard ? '\0' : 'E');
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}
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@ -1399,7 +1397,7 @@ class tm_writer {
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write2digits(buf, static_cast<size_t>(year / 100));
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} else {
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offset = 4;
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write_year_extended(year);
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write_year_extended(year, pad_type::zero);
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year = 0;
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}
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write_digit2_separated(buf + 2, static_cast<unsigned>(year % 100),
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@ -1411,9 +1409,9 @@ class tm_writer {
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void on_utc_offset(numeric_system ns) { format_utc_offset_impl(tm_, ns); }
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void on_tz_name() { format_tz_name_impl(tm_); }
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void on_year(numeric_system ns) {
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void on_year(numeric_system ns, pad_type pad) {
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if (is_classic_ || ns == numeric_system::standard)
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return write_year(tm_year());
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return write_year(tm_year(), pad);
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format_localized('Y', 'E');
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}
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void on_short_year(numeric_system ns) {
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@ -1444,9 +1442,9 @@ class tm_writer {
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}
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}
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void on_dec_month(numeric_system ns) {
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void on_dec_month(numeric_system ns, pad_type pad) {
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if (is_classic_ || ns == numeric_system::standard)
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return write2(tm_mon() + 1);
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return write2(tm_mon() + 1, pad);
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format_localized('m', 'O');
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}
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@ -1473,16 +1471,24 @@ class tm_writer {
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format_localized('V', 'O');
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}
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void on_iso_week_based_year() { write_year(tm_iso_week_year()); }
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void on_iso_week_based_year() {
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write_year(tm_iso_week_year(), pad_type::zero);
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}
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void on_iso_week_based_short_year() {
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write2(split_year_lower(tm_iso_week_year()));
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}
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void on_day_of_year() {
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void on_day_of_year(pad_type pad) {
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auto yday = tm_yday() + 1;
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write1(yday / 100);
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write2(yday % 100);
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auto digit1 = yday / 100;
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if (digit1 != 0) {
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write1(digit1);
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} else {
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out_ = detail::write_padding(out_, pad);
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}
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write2(yday % 100, pad);
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}
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void on_day_of_month(numeric_system ns, pad_type pad) {
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if (is_classic_ || ns == numeric_system::standard)
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return write2(tm_mday(), pad);
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@ -1570,7 +1576,7 @@ struct chrono_format_checker : null_chrono_spec_handler<chrono_format_checker> {
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template <typename Char>
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FMT_CONSTEXPR void on_text(const Char*, const Char*) {}
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FMT_CONSTEXPR void on_day_of_year() {}
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FMT_CONSTEXPR void on_day_of_year(pad_type) {}
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FMT_CONSTEXPR void on_24_hour(numeric_system, pad_type) {}
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FMT_CONSTEXPR void on_12_hour(numeric_system, pad_type) {}
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FMT_CONSTEXPR void on_minute(numeric_system, pad_type) {}
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@ -1827,19 +1833,19 @@ struct chrono_formatter {
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void on_iso_date() {}
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void on_utc_offset(numeric_system) {}
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void on_tz_name() {}
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void on_year(numeric_system) {}
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void on_year(numeric_system, pad_type) {}
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void on_short_year(numeric_system) {}
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void on_offset_year() {}
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void on_century(numeric_system) {}
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void on_iso_week_based_year() {}
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void on_iso_week_based_short_year() {}
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void on_dec_month(numeric_system) {}
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void on_dec_month(numeric_system, pad_type) {}
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void on_dec0_week_of_year(numeric_system, pad_type) {}
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void on_dec1_week_of_year(numeric_system, pad_type) {}
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void on_iso_week_of_year(numeric_system, pad_type) {}
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void on_day_of_month(numeric_system, pad_type) {}
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void on_day_of_year() {
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void on_day_of_year(pad_type) {
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if (handle_nan_inf()) return;
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write(days(), 0);
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}
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@ -2108,7 +2114,7 @@ struct formatter<year, Char> : private formatter<std::tm, Char> {
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if (use_tm_formatter_) return formatter<std::tm, Char>::format(time, ctx);
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detail::get_locale loc(false, ctx.locale());
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auto w = detail::tm_writer<decltype(ctx.out()), Char>(loc, ctx.out(), time);
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w.on_year(detail::numeric_system::standard);
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w.on_year(detail::numeric_system::standard, detail::pad_type::zero);
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return w.out();
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}
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};
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@ -539,6 +539,7 @@ TEST(chrono_test, format_specs) {
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EXPECT_EQ(fmt::format("{:%I}", std::chrono::hours(24)), "12");
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EXPECT_EQ(fmt::format("{:%I}", std::chrono::hours(4)), "04");
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EXPECT_EQ(fmt::format("{:%I}", std::chrono::hours(14)), "02");
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EXPECT_EQ(fmt::format("{:%j}", days(12)), "12");
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EXPECT_EQ(fmt::format("{:%j}", days(12345)), "12345");
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EXPECT_EQ(fmt::format("{:%j}", std::chrono::hours(12345 * 24 + 12)), "12345");
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EXPECT_EQ(fmt::format("{:%H:%M:%S}", std::chrono::seconds(12345)),
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@ -1005,6 +1006,10 @@ TEST(chrono_test, glibc_extensions) {
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EXPECT_EQ(fmt::format("{:%U,%W,%V}", t), "02,01,01");
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EXPECT_EQ(fmt::format("{:%_U,%_W,%_V}", t), " 2, 1, 1");
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EXPECT_EQ(fmt::format("{:%-U,%-W,%-V}", t), "2,1,1");
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EXPECT_EQ(fmt::format("{:%j}", t), "008");
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EXPECT_EQ(fmt::format("{:%_j}", t), " 8");
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EXPECT_EQ(fmt::format("{:%-j}", t), "8");
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}
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{
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@ -1016,6 +1021,32 @@ TEST(chrono_test, glibc_extensions) {
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EXPECT_EQ(fmt::format("{:%e}", t), " 7");
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}
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{
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auto t = std::tm();
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t.tm_year = 7 - 1900;
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EXPECT_EQ(fmt::format("{:%Y}", t), "0007");
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EXPECT_EQ(fmt::format("{:%_Y}", t), " 7");
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EXPECT_EQ(fmt::format("{:%-Y}", t), "7");
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}
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{
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auto t = std::tm();
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t.tm_year = -5 - 1900;
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EXPECT_EQ(fmt::format( "{:%Y}", t), "-005");
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EXPECT_EQ(fmt::format("{:%_Y}", t), " -5");
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EXPECT_EQ(fmt::format("{:%-Y}", t), "-5");
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}
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{
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auto t = std::tm();
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t.tm_mon = 7 - 1;
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EXPECT_EQ(fmt::format("{:%m}", t), "07");
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EXPECT_EQ(fmt::format("{:%_m}", t), " 7");
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EXPECT_EQ(fmt::format("{:%-m}", t), "7");
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}
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}
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TEST(chrono_test, out_of_range) {
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