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author | sebres <sebres@users.sourceforge.net> | 2017-01-10 22:19:01 (GMT) |
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committer | sebres <sebres@users.sourceforge.net> | 2017-01-10 22:19:01 (GMT) |
commit | 1eb32293de0bc1f5a1ff4b2e1ef636affd396e32 (patch) | |
tree | e1b136b321b6f144b2e4e96952d926c26a8250d1 /generic/tclDate.h | |
parent | c313bacc9f0d53d7090a7bc98b24b78ecb92d2f4 (diff) | |
download | tcl-1eb32293de0bc1f5a1ff4b2e1ef636affd396e32.zip tcl-1eb32293de0bc1f5a1ff4b2e1ef636affd396e32.tar.gz tcl-1eb32293de0bc1f5a1ff4b2e1ef636affd396e32.tar.bz2 |
[temp-commit]: code review, DST-hole mistake by scan with relative time resolved;
caching of UTC2Local / Local2UTC cherry picked
Diffstat (limited to 'generic/tclDate.h')
-rw-r--r-- | generic/tclDate.h | 84 |
1 files changed, 81 insertions, 3 deletions
diff --git a/generic/tclDate.h b/generic/tclDate.h index 4b0b47e..47f2a21 100644 --- a/generic/tclDate.h +++ b/generic/tclDate.h @@ -14,6 +14,28 @@ #define _TCLCLOCK_H /* + * Constants + */ + +#define JULIAN_DAY_POSIX_EPOCH 2440588 +#define GREGORIAN_CHANGE_DATE 2361222 +#define SECONDS_PER_DAY 86400 +#define JULIAN_SEC_POSIX_EPOCH (((Tcl_WideInt) JULIAN_DAY_POSIX_EPOCH) \ + * SECONDS_PER_DAY) +#define FOUR_CENTURIES 146097 /* days */ +#define JDAY_1_JAN_1_CE_JULIAN 1721424 +#define JDAY_1_JAN_1_CE_GREGORIAN 1721426 +#define ONE_CENTURY_GREGORIAN 36524 /* days */ +#define FOUR_YEARS 1461 /* days */ +#define ONE_YEAR 365 /* days */ + + +/* On demand (lazy) assemble flags */ +#define CLF_INVALIDATE_DATE (1 << 6) /* assemble year, month, etc. using julianDay */ +#define CLF_INVALIDATE_JULIANDAY (1 << 7) /* assemble julianDay using year, month, etc. */ +#define CLF_INVALIDATE_SECONDS (1 << 8) /* assemble localSeconds (and seconds at end) */ + +/* * Structure containing the fields used in [clock format] and [clock scan] */ @@ -52,6 +74,7 @@ typedef struct TclDateFields { typedef struct DateInfo { const char *dateStart; const char *dateInput; + int flags; TclDateFields date; @@ -116,19 +139,71 @@ typedef struct DateInfo { #define yyDigitCount (info->dateDigitCount) -enum {CL_INVALIDATE = (signed int)0x80000000}; /* * Structure containing the command arguments supplied to [clock format] and [clock scan] */ +#define CLF_EXTENDED (1 << 4) +#define CLF_STRICT (1 << 8) + typedef struct ClockFmtScnCmdArgs { Tcl_Obj *formatObj; /* Format */ Tcl_Obj *localeObj; /* Name of the locale where the time will be expressed. */ Tcl_Obj *timezoneObj; /* Default time zone in which the time will be expressed */ Tcl_Obj *baseObj; /* Base (scan only) */ + int flags; /* Flags control scanning */ } ClockFmtScnCmdArgs; /* + * Structure containing the client data for [clock] + */ + +typedef struct ClockClientData { + int refCount; /* Number of live references. */ + Tcl_Obj **literals; /* Pool of object literals. */ + /* Cache for current clock parameters, imparted via "configure" */ + unsigned long LastTZEpoch; + int currentYearCentury; + int yearOfCenturySwitch; + Tcl_Obj *SystemTimeZone; + Tcl_Obj *SystemSetupTZData; + Tcl_Obj *GMTSetupTimeZone; + Tcl_Obj *GMTSetupTZData; + Tcl_Obj *AnySetupTimeZone; + Tcl_Obj *AnySetupTZData; + Tcl_Obj *LastUnnormSetupTimeZone; + Tcl_Obj *LastSetupTimeZone; + Tcl_Obj *LastSetupTZData; + /* Cache for last base (last-second fast convert if base/tz not changed) */ + struct { + Tcl_Obj *TimeZone; + TclDateFields Date; + } lastBase; + /* Las-minute cache for fast UTC2Local conversion */ + struct { + /* keys */ + Tcl_Obj *tzData; + int changeover; + Tcl_WideInt seconds; + /* values */ + time_t tzOffset; + Tcl_Obj *tzName; + } UTC2Local; + /* Las-minute cache for fast Local2UTC conversion */ + struct { + /* keys */ + Tcl_Obj *tzData; + int changeover; + Tcl_WideInt localSeconds; + /* values */ + time_t tzOffset; + } Local2UTC; +} ClockClientData; + +#define ClockDefaultYearCentury 2000 +#define ClockDefaultCenturySwitch 38 + +/* * Meridian: am, pm, or 24-hour style. */ @@ -152,8 +227,11 @@ typedef int ClockScanTokenProc( ClockScanToken *tok); -#define CLF_DATE (1 << 2) -#define CLF_TIME (1 << 3) +#define CLF_DATE (1 << 2) +#define CLF_JULIANDAY (1 << 3) +#define CLF_TIME (1 << 4) +#define CLF_LOCALSEC (1 << 5) +#define CLF_SIGNED (1 << 8) typedef enum _CLCKTOK_TYPE { CTOKT_DIGIT = 1, CTOKT_SPACE, CTOKT_WORD |