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LibCore: Support DateTime string formatting of the form %:z
This formats the time zone offset as "+hh:mm" or "-hh:mm". This doesn't appear to be strictly POSIX, but it is how Linux implements this format.
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1 changed files with 12 additions and 3 deletions
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@ -105,7 +105,7 @@ String DateTime::to_string(const String& format) const
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StringBuilder builder;
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const int format_len = format.length();
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auto format_time_zone_offset = [&]() {
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auto format_time_zone_offset = [&](bool with_separator) {
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auto offset_seconds = -timezone;
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StringView offset_sign;
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@ -118,8 +118,9 @@ String DateTime::to_string(const String& format) const
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auto offset_hours = offset_seconds / 3600;
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auto offset_minutes = (offset_seconds % 3600) / 60;
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auto separator = with_separator ? ":"sv : ""sv;
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builder.appendff("{}{:02}{:02}", offset_sign, offset_hours, offset_minutes);
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builder.appendff("{}{:02}{}{:02}", offset_sign, offset_hours, separator, offset_minutes);
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};
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for (int i = 0; i < format_len; ++i) {
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@ -235,7 +236,15 @@ String DateTime::to_string(const String& format) const
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builder.appendff("{}", tm.tm_year + 1900);
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break;
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case 'z':
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format_time_zone_offset();
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format_time_zone_offset(false);
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break;
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case ':':
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if (++i == format_len)
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return String::empty();
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if (format[i] != 'z')
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return String::empty();
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format_time_zone_offset(true);
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break;
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case '%':
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builder.append('%');
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