Bug #7326 » time_patch0001.diff
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static struct tm *localtime_with_gmtoff_zone(const time_t *t, struct tm *result, long *gmtoff, const char **zone);
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/*
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* The idea is come from Perl:
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* The idea is borrowed from Perl:
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* http://use.perl.org/articles/08/02/07/197204.shtml
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*
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* compat_common_month_table is generated by following program.
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* This table finds the last month which start the same day of a week.
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* The year 2037 is not used because
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* compat_common_month_table is generated by the following program.
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* This table finds the last month which starts at the same day of a week.
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* The year 2037 is not used because:
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* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=522949
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*
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* #!/usr/bin/ruby
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VALUE timev;
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int y, wday;
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/* The first DST is at 1916 in German.
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* So we don't need to care DST before that. */
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/* Daylight Saving Time was introduced in 1916.
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* So we don't need to care about DST before that. */
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if (lt(vtm_utc->year, INT2FIX(1916))) {
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VALUE off = INT2FIX(0);
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int isdst = 0;
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return off;
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}
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/* It is difficult to guess future. */
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/* It is difficult to guess the future. */
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vtm2 = *vtm_utc;
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| ... | ... | |
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* _sec_ may have fraction if it is a rational.
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*
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* _utc_offset_ is the offset from UTC.
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* It is a string such as "+09:00" or a number of seconds such as 32400.
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* It can be a string such as "+09:00" or a number of seconds such as 32400.
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*
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* a = Time.new #=> 2007-11-19 07:50:02 -0600
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* b = Time.new #=> 2007-11-19 07:50:02 -0600
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| ... | ... | |
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* t.to_i #=> 1270968744
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*
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* Note that IEEE 754 double is not accurate enough to represent
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* number of nanoseconds from the Epoch.
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* the number of nanoseconds since the Epoch.
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*/
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static VALUE
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* %z - Time zone as hour and minute offset from UTC (e.g. +0900)
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* %:z - hour and minute offset from UTC with a colon (e.g. +09:00)
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* %::z - hour, minute and second offset from UTC (e.g. +09:00:00)
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* %Z - Time zone abbreviation name or something similar information.
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* %Z - Abbreviated time zone name or similar information.
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*
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* Weekday:
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* %A - The full weekday name (``Sunday'')
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| ... | ... | |
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* %w - Day of the week (Sunday is 0, 0..6)
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*
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* ISO 8601 week-based year and week number:
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* The week 1 of YYYY starts with a Monday and includes YYYY-01-04.
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* The first week of YYYY starts with a Monday and includes YYYY-01-04.
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* The days in the year before the first week are in the last week of
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* the previous year.
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* %G - The week-based year
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| ... | ... | |
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* %V - Week number of the week-based year (01..53)
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*
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* Week number:
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* The week 1 of YYYY starts with a Sunday or Monday (according to %U
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* or %W). The days in the year before the first week are in week 0.
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* %U - Week number of the year. The week starts with Sunday. (00..53)
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* %W - Week number of the year. The week starts with Monday. (00..53)
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* The first week of YYYY that starts with a Sunday or Monday (according to %U
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* or %W). The days in the year before the first week are in week 0.
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* %U - Week number of the year. The week starts with Sunday. (00..53)
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* %W - Week number of the year. The week starts with Monday. (00..53)
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*
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* Seconds since the Epoch:
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* %s - Number of seconds since 1970-01-01 00:00:00 UTC.
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| ... | ... | |
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*
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* t + (60*60*24*365) #=> 1994-02-24 12:00:00 +0900
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*
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* How many second was that from the Unix Epoch?
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* How many seconds was that since the Unix Epoch?
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*
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* t.to_i #=> 730522800
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*
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