LibCore: Remove DateTime::to_string() and to_byte_string()
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This commit is contained in:
Tomasz Strejczek 2025-06-19 21:27:53 +02:00 committed by Andrew Kaster
commit 7278a17e87
Notes: github-actions[bot] 2025-06-20 00:44:06 +00:00
2 changed files with 0 additions and 239 deletions

View file

@ -134,209 +134,6 @@ void DateTime::set_date(Core::DateTime const& other)
set_time(other.year(), other.month(), other.day(), hour(), minute(), second()); set_time(other.year(), other.month(), other.day(), hour(), minute(), second());
} }
ErrorOr<String> DateTime::to_string(StringView format, LocalTime local_time) const
{
struct tm tm;
if (local_time == LocalTime::Yes)
localtime_r(&m_timestamp, &tm);
else
gmtime_r(&m_timestamp, &tm);
StringBuilder builder;
size_t const format_len = format.length();
auto format_time_zone_offset = [&](bool with_separator) -> ErrorOr<void> {
struct tm gmt_tm;
gmtime_r(&m_timestamp, &gmt_tm);
gmt_tm.tm_isdst = -1;
auto gmt_timestamp = mktime(&gmt_tm);
auto offset_seconds = static_cast<time_t>(difftime(m_timestamp, gmt_timestamp));
StringView offset_sign;
if (offset_seconds >= 0) {
offset_sign = "+"sv;
} else {
offset_sign = "-"sv;
offset_seconds *= -1;
}
auto offset_hours = offset_seconds / 3600;
auto offset_minutes = (offset_seconds % 3600) / 60;
auto separator = with_separator ? ":"sv : ""sv;
TRY(builder.try_appendff("{}{:02}{}{:02}", offset_sign, offset_hours, separator, offset_minutes));
return {};
};
for (size_t i = 0; i < format_len; ++i) {
if (format[i] != '%') {
TRY(builder.try_append(format[i]));
} else {
if (++i == format_len)
return String {};
switch (format[i]) {
case 'a':
TRY(builder.try_append(short_day_names[tm.tm_wday]));
break;
case 'A':
TRY(builder.try_append(long_day_names[tm.tm_wday]));
break;
case 'b':
TRY(builder.try_append(short_month_names[tm.tm_mon]));
break;
case 'B':
TRY(builder.try_append(long_month_names[tm.tm_mon]));
break;
case 'C':
TRY(builder.try_appendff("{:02}", (tm.tm_year + 1900) / 100));
break;
case 'd':
TRY(builder.try_appendff("{:02}", tm.tm_mday));
break;
case 'D':
TRY(builder.try_appendff("{:02}/{:02}/{:02}", tm.tm_mon + 1, tm.tm_mday, (tm.tm_year + 1900) % 100));
break;
case 'e':
TRY(builder.try_appendff("{:2}", tm.tm_mday));
break;
case 'h':
TRY(builder.try_append(short_month_names[tm.tm_mon]));
break;
case 'H':
TRY(builder.try_appendff("{:02}", tm.tm_hour));
break;
case 'I': {
int display_hour = tm.tm_hour % 12;
if (display_hour == 0)
display_hour = 12;
TRY(builder.try_appendff("{:02}", display_hour));
break;
}
case 'j':
TRY(builder.try_appendff("{:03}", tm.tm_yday + 1));
break;
case 'l': {
int display_hour = tm.tm_hour % 12;
if (display_hour == 0)
display_hour = 12;
TRY(builder.try_appendff("{:2}", display_hour));
break;
}
case 'm':
TRY(builder.try_appendff("{:02}", tm.tm_mon + 1));
break;
case 'M':
TRY(builder.try_appendff("{:02}", tm.tm_min));
break;
case 'n':
TRY(builder.try_append('\n'));
break;
case 'p':
TRY(builder.try_append(tm.tm_hour < 12 ? "AM"sv : "PM"sv));
break;
case 'r': {
int display_hour = tm.tm_hour % 12;
if (display_hour == 0)
display_hour = 12;
TRY(builder.try_appendff("{:02}:{:02}:{:02} {}", display_hour, tm.tm_min, tm.tm_sec, tm.tm_hour < 12 ? "AM" : "PM"));
break;
}
case 'R':
TRY(builder.try_appendff("{:02}:{:02}", tm.tm_hour, tm.tm_min));
break;
case 'S':
TRY(builder.try_appendff("{:02}", tm.tm_sec));
break;
case 't':
TRY(builder.try_append('\t'));
break;
case 'T':
TRY(builder.try_appendff("{:02}:{:02}:{:02}", tm.tm_hour, tm.tm_min, tm.tm_sec));
break;
case 'u':
TRY(builder.try_appendff("{}", tm.tm_wday ? tm.tm_wday : 7));
break;
case 'U': {
int const wday_of_year_beginning = (tm.tm_wday + 6 * tm.tm_yday) % 7;
int const week_number = (tm.tm_yday + wday_of_year_beginning) / 7;
TRY(builder.try_appendff("{:02}", week_number));
break;
}
case 'V': {
int const wday_of_year_beginning = (tm.tm_wday + 6 + 6 * tm.tm_yday) % 7;
int week_number = (tm.tm_yday + wday_of_year_beginning) / 7 + 1;
if (wday_of_year_beginning > 3) {
if (tm.tm_yday >= 7 - wday_of_year_beginning)
--week_number;
else {
int const days_of_last_year = days_in_year(tm.tm_year + 1900 - 1);
int const wday_of_last_year_beginning = (wday_of_year_beginning + 6 * days_of_last_year) % 7;
week_number = (days_of_last_year + wday_of_last_year_beginning) / 7 + 1;
if (wday_of_last_year_beginning > 3)
--week_number;
}
}
TRY(builder.try_appendff("{:02}", week_number));
break;
}
case 'w':
TRY(builder.try_appendff("{}", tm.tm_wday));
break;
case 'W': {
int const wday_of_year_beginning = (tm.tm_wday + 6 + 6 * tm.tm_yday) % 7;
int const week_number = (tm.tm_yday + wday_of_year_beginning) / 7;
TRY(builder.try_appendff("{:02}", week_number));
break;
}
case 'y':
TRY(builder.try_appendff("{:02}", (tm.tm_year + 1900) % 100));
break;
case 'Y':
TRY(builder.try_appendff("{}", tm.tm_year + 1900));
break;
case 'z':
TRY(format_time_zone_offset(false));
break;
case ':':
if (++i == format_len) {
TRY(builder.try_append("%:"sv));
break;
}
if (format[i] != 'z') {
TRY(builder.try_append("%:"sv));
TRY(builder.try_append(format[i]));
break;
}
TRY(format_time_zone_offset(true));
break;
case 'Z': {
auto const* timezone_name = tzname[tm.tm_isdst == 0 ? 0 : 1];
TRY(builder.try_append({ timezone_name, strlen(timezone_name) }));
break;
}
case '%':
TRY(builder.try_append('%'));
break;
default:
TRY(builder.try_append('%'));
TRY(builder.try_append(format[i]));
break;
}
}
}
return builder.to_string();
}
ByteString DateTime::to_byte_string(StringView format, LocalTime local_time) const
{
return MUST(to_string(format, local_time)).to_byte_string();
}
Optional<DateTime> DateTime::parse(StringView format, StringView string) Optional<DateTime> DateTime::parse(StringView format, StringView string)
{ {
unsigned format_pos = 0; unsigned format_pos = 0;

View file

@ -33,42 +33,6 @@ public:
void set_time_only(int hour, int minute, Optional<int> second = {}); void set_time_only(int hour, int minute, Optional<int> second = {});
void set_date(Core::DateTime const& other); void set_date(Core::DateTime const& other);
enum class LocalTime {
Yes,
No,
};
// %a: require short day name
// %A: require long day name
// %h/b: require short month name
// %B: require long month name
// %C: require short year number (hundreds) (ex: 19 -> 1900)
// %d: require day number
// %D: require month number/day number/short year number (ex: 12/31/24)
// %e: require day number
// %H: require hour (24h format)
// %I: require hour (12h format)
// %j: require defining date with day number ? (not sure)
// %m: require set to month entred - 1
// %M: require minutes
// %n: require newline
// %t: require tab
// %r/p: require AM | PM
// %R: require hours:minutes (ex: 13:57)
// %S: require seconds
// %T: require hours:minutes:seconds (ex: 13:57:34)
// %w: require week day number
// %y: require 2 digits year (69 < year < 99: in the 1900 else in 2000)
// %Y: require full year
// %z: require timezone hours:minutes or single number to represent hour and minutes
// %x: require single number to represent hour and minutes
// %X: require sub second precision
// %Z: require timezone name
// %+: ignore until next '%'
// %%: require character '%'
ErrorOr<String> to_string(StringView format = "%Y-%m-%d %H:%M:%S"sv, LocalTime = LocalTime::Yes) const;
ByteString to_byte_string(StringView format = "%Y-%m-%d %H:%M:%S"sv, LocalTime = LocalTime::Yes) const;
static DateTime create(int year, int month = 1, int day = 1, int hour = 0, int minute = 0, int second = 0); static DateTime create(int year, int month = 1, int day = 1, int hour = 0, int minute = 0, int second = 0);
static DateTime now(); static DateTime now();
static DateTime from_timestamp(time_t); static DateTime from_timestamp(time_t);