(number): Handle `Nov 11 1996' example; see Risks Digest 20.55
http://catless.ncl.ac.uk/Risks/20.55.html#subj18
(1999-08-27)
(<stdio.h>): Include only if testing.
(ISUPPER): Remove.
(ISLOWER, PC): New macros.
(<string.h>): Include if HAVE_STRING_H, not USG.
(bcopy): Remove.
(yymaxdepth, ..., yycheck): Don't bother to redefine, since we assume
bison.
(EPOCH_YEAR): Renamed from EPOCH.
(table): Renamed from TABLE.
(meridian): Now an anonymous enum.
(struct parser_control): New type.
(YYLEX_PARAM, YYPARSE_PARAM, YYSTYPE): New macros.
(yyInput, ..., yyRelYear): Migrated into struct parser_control.
(%pure_parser): Added, so that the parser is pure.
(%union): Removed; the type is now just plain int.
All %type directives removed.
(tLOCAL_ZONE): New %token.
(month_day_table): Renamed from MonthDayTable.
(gmtime, localtime, mktime, time): Declare only if not defined.
(meridian_table): New table.
(dst_table): New table.
(units_table): renamed from UnitsTable.
(relative_time_table): Renamed from OtherTable.
(time_zone_table): Renamed from TimezoneTable. Modernized data.
(military_table): Renamed from MilitaryTable.
(to_hour): Renamed from ToHour.
(to_year): Renamed from ToYear.
(lookup_zone): New function.
(LookupWord): Renamed from lookup_word.
Use lookup_zone for time zones.
(yylex): Now reentrant. All callers changed.
(get_date): Add support for local time zone abbreviations.
Make it reentrant.
`yesterday,' `today,' and `now' rather than tMINUTE_UNIT. Of course
with correspondingly smaller numbers for tomorrow and yesterday.
This change does not change the way the code works, since the
grammar rules for the two symbols are analogous.
call; this is an improvement on a bug fix suggested by
martin@dresden.nacamar.de. Do not assume that localtime and
gmtime return non-null.
From Paul Eggert.
(__attribute__): Define.
(ATTRIBUTE_UNUSED): Define.
(yyerror): Mark parameter as unused with ATTRIBUTE_UNUSED.
(MonthDayTable): Add initializers for last entry.
(UnitsTable): Likewise.
(OtherTable): Likewise.
(MilitaryTable): Likewise.
Move inclusion of getdate.h and dependent extern declarations down
so getdate.h's prototype follows the sometimes-enabled definition
of `const' to nothing. Otherwise, the prototype wouldn't match
the definition because of the defined-away `const'.
(get_date): ANSI-fy definition.
From Kaveh Ghazi.
(tDAY_UNIT): Likewise for yyRelDay.
(tHOUR_UNIT): Likewise for yyRelHour.
(tMINUTE_UNIT): Likewise for yyRelMinutes.
(tSEC_UNIT): Likewise for yyRelSeconds.
* getdate.y: Rewrite to use mktime.
<sys/timeb.h>: Don't include.
(mktime): Declare.
(struct timeb, timezone, DOOMSDAY, SECSPERDAY, DSTMODE, yyDSTmode,
ToSeconds, Convert, DSTcorrect, RelativeDate, RelativeMonth): Remove.
(ToHour): New function (part of the old ToSeconds fn).
(ToYear): New function (part of the old Convert fn).
(TABLE.value, yyDayOrdinal, yyDayNumber, yyTimezone, yyDay, yyHour,
yyMinutes, yyMonth, yySeconds, yyYear, yyRelMonth, yyRelSeconds,
Number): Now int instead of time_t.
(HOUR): Don't cast to time_t.
(tDAY_UNIT, tHOUR_UNIT, tYEAR_UNIT): New %tokens.
(UnitsTable): Use new units that are closer to the keywords.
(yyRelDay, yyRelHour, yyRelMinutes, yyRelYear): New variables.
(rel, relunit, get_date): Add support for them.
(time): Fix timezone calculations for negative half-hour offsets
when integer division truncates towards minus infinity.
(zone): Incorporiate DST calculation directly.
(get_date): 2nd arg is now time_t *, not struct timeb *.
Use mktime to do most of the work, instead of computing it ourselves.
Guard against falsely reporting errors near the time_t boundaries
when parsing times in other time zones.
(ISDIGIT): New definition from Paul Eggert.
This one evaluates its argument exactly once.
(yylex): Move increment out of ISALPHA argument. Use a
comma-expression instead.
that push the year through the end of the century work. For example,
`date -d "01/01/1998 3 years" +%Y' now prints 2001.
From Peter Dalgaard (pd@kubism.ku.dk).
