summaryrefslogtreecommitdiffstats
path: root/library/clock.tcl
diff options
context:
space:
mode:
Diffstat (limited to 'library/clock.tcl')
-rw-r--r--library/clock.tcl678
1 files changed, 94 insertions, 584 deletions
diff --git a/library/clock.tcl b/library/clock.tcl
index eaa512d..6f6b1ed 100644
--- a/library/clock.tcl
+++ b/library/clock.tcl
@@ -13,7 +13,7 @@
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
-# RCS: @(#) $Id: clock.tcl,v 1.20 2005/11/04 20:13:30 kennykb Exp $
+# RCS: @(#) $Id: clock.tcl,v 1.21 2005/11/29 22:50:58 kennykb Exp $
#
#----------------------------------------------------------------------
@@ -123,6 +123,7 @@ proc ::tcl::clock::Initialize {} {
{-9223372036854775808 0 0 UTC}
}
set TZData(:UTC) $TZData(:Etc/UTC)
+ set TZData(:localtime) {}
}
InitTZData
@@ -640,6 +641,8 @@ proc ::tcl::clock::Initialize {} {
proc ::tcl::clock::format { args } {
+ variable TZData
+
set format {}
# Check the count of args
@@ -719,15 +722,18 @@ proc ::tcl::clock::format { args } {
# Convert the given time to local time.
- set date [dict create seconds $clockval]
- set date [ConvertUTCToLocal $date[set date {}] $timezone]
+ # Get the data for time changes in the given zone
+ if {[catch {SetupTimeZone $timezone} retval opts]} {
+ dict unset opts -errorinfo
+ return -options $opts $retval
+ }
+
# Extract the fields of the date.
-
- set date [GetJulianDay $date[set date {}]]
- set date [GetGregorianEraYearDay $date[set date {}]]
- set date [GetMonthDay $date[set date {}]]
- set date [GetYearWeekDay $date[set date {}]]
+
+ set date [GetDateFields $clockval \
+ $TZData($timezone) \
+ [mc GREGORIAN_CHANGE_DATE]]
# Format the result
@@ -1233,15 +1239,22 @@ proc ::tcl::clock::scan { args } {
proc ::tcl::clock::FreeScan { string base timezone locale } {
+ variable TZData
+
+ # Get the data for time changes in the given zone
+
+ if {[catch {SetupTimeZone $timezone} retval opts]} {
+ dict unset opts -errorinfo
+ return -options $opts $retval
+ }
+
# Extract year, month and day from the base time for the
# parser to use as defaults
- set date [GetMonthDay \
- [GetGregorianEraYearDay \
- [GetJulianDay \
- [ConvertUTCToLocal \
- [dict create seconds $base] \
- $timezone]]]]
+ set date [GetDateFields \
+ $base \
+ $TZData($timezone) \
+ 2299161]
dict set date secondOfDay [expr { [dict get $date localSeconds]
% 86400 }]
@@ -1294,6 +1307,7 @@ proc ::tcl::clock::FreeScan { string base timezone locale } {
foreach { minEast dstFlag } $parseZone break
set timezone [FormatNumericTimeZone \
[expr { 60 * $minEast + 3600 * $dstFlag }]]
+ SetupTimeZone $timezone
}
dict set date tzName $timezone
@@ -1315,7 +1329,7 @@ proc ::tcl::clock::FreeScan { string base timezone locale } {
+ ( 86400 * wide([dict get $date julianDay]) )
+ [dict get $date secondOfDay] }]
dict set date tzName $timezone
- set date [ConvertLocalToUTC $date[set date {}]]
+ set date [ConvertLocalToUTC $date[set date {}] $TZData($timezone) 2299161]
set seconds [dict get $date seconds]
# Do relative times
@@ -1332,10 +1346,7 @@ proc ::tcl::clock::FreeScan { string base timezone locale } {
if { [llength $parseWeekday] > 0 } {
foreach {dayOrdinal dayOfWeek} $parseWeekday break
- set date2 [GetJulianDay \
- [ConvertUTCToLocal \
- [dict create seconds $seconds] \
- $timezone]]
+ set date2 [GetDateFields $seconds $TZData($timezone) 2299161]
dict set date2 era CE
set jdwkday [WeekdayOnOrBefore $dayOfWeek \
[expr { [dict get $date2 julianDay]
@@ -1352,7 +1363,8 @@ proc ::tcl::clock::FreeScan { string base timezone locale } {
+ ( 86400 * wide([dict get $date2 julianDay]) )
+ [dict get $date secondOfDay] }]
dict set date2 tzName $timezone
- set date2 [ConvertLocalToUTC $date2[set date2 {}]]
+ set date2 [ConvertLocalToUTC $date2[set date2 {}] $TZData($timezone) \
+ 2299161]
set seconds [dict get $date2 seconds]
}
@@ -1844,6 +1856,7 @@ proc ::tcl::clock::ParseClockScanFormat { formatString } {
# Build the procedure
set procBody {}
+ append procBody "variable ::tcl::clock::TZData" \n
append procBody "if \{ !\[ regexp -nocase [list $re] \$string ->"
for { set i 1 } { $i <= $captureCount } { incr i } {
append procBody " " field $i
@@ -1884,8 +1897,16 @@ proc ::tcl::clock::ParseClockScanFormat { formatString } {
if { ![dict exists $fieldSet seconds]
&& ![dict exists $fieldSet starDate] } {
+ if { [dict exists $fieldSet tzName] } {
+ append procBody {
+ set timeZone [dict get $date tzName]
+ }
+ }
append procBody {
- set date [::tcl::clock::ConvertLocalToUTC $date[set date {}]]
+ ::tcl::clock::SetupTimeZone $timeZone
+ set date [::tcl::clock::ConvertLocalToUTC $date[set date {}] \
+ $TZData($timeZone) \
+ [mc GREGORIAN_CHANGE_DATE]]
}
}
@@ -2473,7 +2494,6 @@ proc ::tcl::clock::FormatNumericTimeZone { z } {
}
-
#----------------------------------------------------------------------
#
# FormatStarDate --
@@ -2681,15 +2701,15 @@ proc ::tcl::clock::InterpretTwoDigitYear { date baseTime
#
#----------------------------------------------------------------------
-proc ::tcl::clock::AssignBaseYear { date baseTime timeZone } {
+proc ::tcl::clock::AssignBaseYear { date baseTime timezone } {
+
+ variable TZData
# Find the Julian Day Number corresponding to the base time, and
# find the Gregorian year corresponding to that Julian Day.
- set date2 [dict create seconds $baseTime]
- set date2 [ConvertUTCToLocal $date2[set date2 {}] $timeZone]
- set date2 [GetJulianDay $date2[set date2 {}]]
- set date2 [GetGregorianEraYearDay $date2[set date2 {}]]
+ set date2 [GetDateFields $baseTime $TZData($timezone) \
+ [mc GREGORIAN_CHANGE_DATE]]
# Store the converted year
@@ -2722,15 +2742,15 @@ proc ::tcl::clock::AssignBaseYear { date baseTime timeZone } {
proc ::tcl::clock::AssignBaseIso8601Year { date baseTime timeZone } {
+ variable TZData
+
# Find the Julian Day Number corresponding to the base time
- set date2 [dict create seconds $baseTime]
- set date2 [ConvertUTCToLocal $date2[set date2 {}] $timeZone]
- set date2 [GetJulianDay $date2[set date2 {}]]
+ set date2 [GetDateFields $baseTime $TZData($timeZone) \
+ [mc GREGORIAN_CHANGE_DATE]]
# Calculate the ISO8601 date and transfer the year
- set date2 [GetYearWeekDay $date2[set date2 {}]]
dict set date era CE
dict set date iso8601Year [dict get $date2 iso8601Year]
return $date
@@ -2756,18 +2776,14 @@ proc ::tcl::clock::AssignBaseIso8601Year { date baseTime timeZone } {
#
#----------------------------------------------------------------------
-proc ::tcl::clock::AssignBaseMonth { date baseTime timeZone } {
+proc ::tcl::clock::AssignBaseMonth { date baseTime timezone } {
- # Find the Julian Day Number corresponding to the base time
-
- set date2 [dict create seconds $baseTime]
- set date2 [ConvertUTCToLocal $date2[set date2 {}] $timeZone]
- set date2 [GetJulianDay $date2[set date2 {}]]
+ variable TZData
- # Find the Gregorian year corresponding to that Julian Day
+ # Find the year and month corresponding to the base time
- set date2 [GetGregorianEraYearDay $date2[set date2 {}]]
- set date2 [GetMonthDay $date2[set date2 {}]]
+ set date2 [GetDateFields $baseTime $TZData($timezone) \
+ [mc GREGORIAN_CHANGE_DATE]]
dict set date era [dict get $date2 era]
dict set date year [dict get $date2 year]
dict set date month [dict get $date2 month]
@@ -2797,15 +2813,15 @@ proc ::tcl::clock::AssignBaseMonth { date baseTime timeZone } {
proc ::tcl::clock::AssignBaseWeek { date baseTime timeZone } {
+ variable TZData
+
# Find the Julian Day Number corresponding to the base time
- set date2 [dict create seconds $baseTime]
- set date2 [ConvertUTCToLocal $date2[set date2 {}] $timeZone]
- set date2 [GetJulianDay $date2[set date2 {}]]
+ set date2 [GetDateFields $baseTime $TZData($timeZone) \
+ [mc GREGORIAN_CHANGE_DATE]]
# Calculate the ISO8601 date and transfer the year
- set date2 [GetYearWeekDay $date2[set date2 {}]]
dict set date era CE
dict set date iso8601Year [dict get $date2 iso8601Year]
dict set date iso8601Week [dict get $date2 iso8601Week]
@@ -2833,11 +2849,12 @@ proc ::tcl::clock::AssignBaseWeek { date baseTime timeZone } {
proc ::tcl::clock::AssignBaseJulianDay { date baseTime timeZone } {
+ variable TZData
+
# Find the Julian Day Number corresponding to the base time
- set date2 [dict create seconds $baseTime]
- set date2 [ConvertUTCToLocal $date2[set date2 {}] $timeZone]
- set date2 [GetJulianDay $date2[set date2 {}]]
+ set date2 [GetDateFields $baseTime $TZData($timeZone) \
+ [mc GREGORIAN_CHANGE_DATE]]
dict set date julianDay [dict get $date2 julianDay]
return $date
@@ -2992,249 +3009,6 @@ proc ::tcl::clock::ConvertLegacyTimeZone { tzname } {
#----------------------------------------------------------------------
#
-# ConvertLocalToUTC --
-#
-# Given a time zone and nominal local seconds, compute seconds
-# of UTC time from the Posix epoch.
-#
-# Parameters:
-# date - Dictionary populated with the 'localSeconds' and
-# 'tzName' fields
-#
-# Results:
-# Returns the given dictionary augmented with a 'seconds' field.
-#
-#----------------------------------------------------------------------
-
-proc ::tcl::clock::ConvertLocalToUTC { date } {
-
- variable TZData
-
- set timezone [dict get $date tzName]
- if { $timezone eq ":localtime" } {
-
- # Convert using the mktime function if possible
-
- if { [catch {
- ConvertLocalToUTCViaC [dict get $date localSeconds]
- } result opts] } {
- dict unset opts -errorinfo
- return -options $opts $result
- }
- dict set date seconds $result
- return $date
-
- } else {
-
- # Get the time zone data
-
- if { [catch { SetupTimeZone $timezone } retval opts] } {
- dict unset opts -errorinfo
- return -options $opts $retval
- }
-
- # Initially assume that local == UTC, and locate the last time
- # conversion prior to that time. Get the offset from that,
- # and look up again. If that lookup finds a different offset,
- # continue looking until we find an offset that we found
- # before. The check for "any offset previously found" rather
- # than "the same offset" avoids an endless loop if we try to
- # convert a non-existent time, for example 2:30am during the
- # US spring DST change.
-
- set localseconds [dict get $date localSeconds]
- set utcseconds(0) $localseconds
- set seconds $localseconds
- while { 1 } {
- set i [BSearch $TZData($timezone) $seconds]
- set offset [lindex $TZData($timezone) $i 1]
- if { [info exists utcseconds($offset)] } {
- dict set date seconds $utcseconds($offset)
- return $date
- } else {
- set seconds [expr { $localseconds - $offset }]
- set utcseconds($offset) $seconds
- }
- }
-
- # In the absolute worst case, the loop above can visit each tzdata
- # row only once, so it's guaranteed to terminate.
-
- error "in ConvertLocalToUTC, can't happen"
- }
-
-}
-
-#----------------------------------------------------------------------
-#
-# ConvertLocalToUTCViaC --
-#
-# Given seconds of nominal local time, compute seconds from the
-# Posix epoch.
-#
-# Parameters:
-# localSeconds - Seconds of nominal local time
-#
-# Results:
-# Returns the seconds from the epoch. May throw an error if
-# the time is to large/small to represent, or if 'mktime' is
-# not present in the C library.
-#
-# Side effects:
-# None.
-#
-#----------------------------------------------------------------------
-
-proc ::tcl::clock::ConvertLocalToUTCViaC { localSeconds } {
-
- set date [dict create localSeconds $localSeconds]
- set date [GetJulianDay $date[set date {}]]
- set date [GetGregorianEraYearDay $date[set date {}]]
- set date [GetMonthDay $date[set date {}]]
- set retval \
- [Mktime \
- [dict get $date year] \
- [dict get $date month] \
- [dict get $date dayOfMonth] \
- [expr { $localSeconds / 3600 % 24 }] \
- [expr { $localSeconds / 60 % 60 }] \
- [expr { $localSeconds % 60 }]]
- return $retval
-}
-
-#----------------------------------------------------------------------
-#
-# ConvertUTCToLocal --
-#
-# Given the seconds from the Posix epoch, compute seconds of
-# nominal local time.
-#
-# Parameters:
-# date - Dictionary populated on entry with the 'seconds' field
-#
-# Results:
-# The given dictionary is returned, augmented with 'localSeconds',
-# 'tzOffset', and 'tzName' fields.
-#
-#----------------------------------------------------------------------
-
-proc ::tcl::clock::ConvertUTCToLocal { date timezone } {
-
- variable TZData
-
- # Get the data for time changes in the given zone
-
- if { [catch { SetupTimeZone $timezone } retval opts] } {
- dict unset opts -errorinfo
- return -options $opts $retval
- }
-
- if { $timezone eq {:localtime} } {
-
- # Convert using the localtime function
-
- if { [catch {
- ConvertUTCToLocalViaC $date
- } retval opts] } {
- dict unset opts -errorinfo
- return -options $opts $retval
- }
- return $retval
- }
-
- # Find the most recent transition in the time zone data
-
- set i [BSearch $TZData($timezone) [dict get $date seconds]]
- set row [lindex $TZData($timezone) $i]
- foreach { junk1 offset junk2 name } $row break
-
- # Add appropriate offset to convert Greenwich to local, and return
- # the local time
-
- dict set date localSeconds [expr { [dict get $date seconds] + $offset }]
- dict set date tzOffset $offset
- dict set date tzName $name
-
- return $date
-
-}
-
-#----------------------------------------------------------------------
-#
-# ConvertUTCToLocalViaC --
-#
-# Convert local time using the C localtime function
-#
-# Parameters:
-# date - Dictionary populated on entry with the 'seconds'
-# and 'timeZone' fields.
-#
-# Results:
-# The given dictionary is returned, augmented with 'localSeconds',
-# 'tzOffset', and 'tzName' fields.
-#
-#----------------------------------------------------------------------
-
-proc ::tcl::clock::ConvertUTCToLocalViaC { date } {
-
- # Get y-m-d-h-m-s from the C library
-
- set gmtSeconds [dict get $date seconds]
- set localFields [Localtime $gmtSeconds]
- set date2 [dict create]
- foreach key {
- year month dayOfMonth hour minute second
- } value $localFields {
- dict set date2 $key $value
- }
- dict set date2 era CE
-
- # Convert to Julian Day
-
- set date2 [GetJulianDayFromEraYearMonthDay $date2[set date2 {}]]
-
- # Reconvert to seconds from the epoch in local time.
-
- set localSeconds [expr { ( ( ( wide([dict get $date2 julianDay])
- * 24
- + wide([dict get $date2 hour]) )
- * 60
- + wide([dict get $date2 minute]) )
- * 60
- + wide([dict get $date2 second]) )
- - 210866803200 }]
-
- # Determine the name and offset of the timezone
-
- set diff [expr { $localSeconds - $gmtSeconds }]
- if { $diff <= 0 } {
- set signum -
- set delta [expr { - $diff }]
- } else {
- set signum +
- set delta $diff
- }
- set hh [::format %02d [expr { $delta / 3600 }]]
- set mm [::format %02d [expr { ($delta / 60 )
- % 60 }]]
- set ss [::format %02d [expr { $delta % 60 }]]
-
- set zoneName $signum$hh$mm
- if { $ss ne {00} } {
- append zoneName $ss
- }
-
- # Fix the dictionary
-
- dict set date localSeconds $localSeconds
- dict set date tzOffset $diff
- dict set date tzName $zoneName
- return $date
-
-}
-
-#----------------------------------------------------------------------
-#
# SetupTimeZone --
#
# Given the name or specification of a time zone, sets up
@@ -4101,288 +3875,6 @@ proc ::tcl::clock::GetLocaleEra { date } {
return $date
}
-#----------------------------------------------------------------------
-#
-# GetJulianDay --
-#
-# Given the seconds from the Posix epoch, derives the Julian
-# day number.
-#
-# Parameters:
-# date - Dictionary containing the date fields. On input,
-# populated with a 'localSeconds' field that gives the
-# nominal seconds from the epoch (in the local time zone,
-# rather than UTC).
-#
-# Results:
-# Returns the given dictionary, augmented by a 'julianDay'
-# field that gives the Julian Day Number at noon of the current
-# date.
-#
-#----------------------------------------------------------------------
-
-proc ::tcl::clock::GetJulianDay { date } {
-
- set secs [dict get $date localSeconds]
-
- return [dict set date julianDay \
- [expr { ( $secs + 210866803200 )
- / 86400 }]]
-
-}
-
-#----------------------------------------------------------------------
-#
-# GetGregorianEraYearDay --
-#
-# Given the time from the Posix epoch and the current time zone,
-# develops the era, year, and day of year in the Gregorian calendar.
-#
-# Parameters:
-# date - Dictionary containing the date fields. On input, populated
-# with the 'julianDay' key whose value is the Julian Day Number.
-#
-# Results:
-# Returns the given dictionary with the 'gregorian', 'era',
-# 'year', and 'dayOfYear' populated.
-#
-# Side effects:
-# None.
-#
-#----------------------------------------------------------------------
-
-proc ::tcl::clock::GetGregorianEraYearDay { date } {
-
- set jday [dict get $date julianDay]
-
- set changeover [mc GREGORIAN_CHANGE_DATE]
-
- if { $jday >= $changeover } {
-
- # Gregorian date
-
- dict set date gregorian 1
-
- # Calculate number of days since 1 January, 1 CE
-
- set day [expr { $jday - 1721425 - 1 }]
-
- # Calculate number of 400 year cycles
-
- set year 1
- set n [expr { $day / 146097 }]
- incr year [expr { 400 * $n }]
- set day [expr { $day % 146097 }]
-
- # Calculate number of centuries in the current cycle
-
- set n [expr { $day / 36524 }]
- set day [expr { $day % 36524 }]
- if { $n > 3 } {
- set n 3 ; # 31 December 2000, for instance
- incr day 36524 ; # is last day of 400 year cycle
- }
- incr year [expr { 100 * $n }]
-
- } else {
-
- # Julian date
-
- dict set date gregorian 0
-
- # Calculate days since 0 January, 1 CE Julian
-
- set day [expr { $jday - 1721423 - 1 }]
- set year 1
-
- }
-
- # Calculate number of 4-year cycles in current century (or in
- # the Common Era, if the calendar is Julian)
-
- set n [expr { $day / 1461 }]
- set day [expr { $day % 1461 }]
- incr year [expr { 4 * $n }]
-
- # Calculate number of years in current 4-year cycle
-
- set n [expr { $day / 365 }]
- set day [expr { $day % 365 }]
- if { $n > 3 } {
- set n 3 ;# 31 December in a leap year
- incr day 365
- }
- incr year $n
-
- # Calculate the era
-
- if { $year <= 0 } {
- dict set date year [expr { 1 - $year }]
- dict set date era BCE
- } else {
- dict set date year $year
- dict set date era CE
- }
-
- # Return day of the year
-
- dict set date dayOfYear [expr { $day + 1 }]
-
- return $date
-
-}
-
-#----------------------------------------------------------------------
-#
-# GetMonthDay --
-#
-# Given the ordinal number of the day within the year, determines
-# month and day of month in the Gregorian calendar.
-#
-# Parameters:
-# date - Dictionary containing the date fields. On input, populated
-# with the 'era', 'gregorian', 'year' and 'dayOfYear' fields.
-#
-# Results:
-# Returns the given dictionary with the 'month' and 'dayOfMonth'
-# fields populated.
-#
-# Side effects:
-# None.
-#
-#----------------------------------------------------------------------
-
-proc ::tcl::clock::GetMonthDay { date } {
-
- variable DaysInRomanMonthInCommonYear
- variable DaysInRomanMonthInLeapYear
-
- set day [dict get $date dayOfYear]
- if { [IsGregorianLeapYear $date] } {
- set hath $DaysInRomanMonthInLeapYear
- } else {
- set hath $DaysInRomanMonthInCommonYear
- }
- set month 1
- foreach n $hath {
- if { $day <= $n } {
- break
- }
- incr month
- incr day [expr { -$n }]
- }
- dict set date month $month
- dict set date dayOfMonth $day
-
- return $date
-
-}
-
-#----------------------------------------------------------------------
-#
-# GetYearWeekDay
-#
-# Given a julian day number, fiscal year, fiscal week,
-# and day of week in the ISO8601 calendar.
-#
-# Parameters:
-#
-# date - Dictionary where the 'julianDay' field is populated.
-# daysInFirstWeek - (Optional) Parameter giving the minimum number
-# of days in the first week of a year. Default is 4.
-#
-# Results:
-# Returns the given dictionary with values filled in for the
-# three given keys.
-#
-# Side effects:
-# None.
-#
-# Bugs:
-# Since ISO8601 week numbering is defined only for the Gregorian
-# calendar, dates on the Julian calendar or before the Common
-# Era may yield unexpected results. In particular, the year of
-# the Julian-to-Gregorian change may be up to three weeks short.
-# The era is not managed separately, so if the Common Era begins
-# (or the period Before the Common Era ends) with a partial week,
-# the few days at the beginning or end of the era may show up
-# as incorrectly belonging to the year zero.
-#
-#----------------------------------------------------------------------
-
-proc ::tcl::clock::GetYearWeekDay { date
- { keys { iso8601Year iso8601Week dayOfWeek } } } {
-
- set daysInFirstWeek 4
- set firstDayOfWeek 1
-
- # Determine the calendar year of $j - $daysInFirstWeek + 1.
- # Compute an upper bound of the fiscal year as being one year
- # past the day on which the current week begins. Find the start
- # of that year.
-
- set j [dict get $date julianDay]
- set jd [expr { $j - $daysInFirstWeek + 1 }]
- set date1 [GetGregorianEraYearDay [dict create julianDay $jd]]
- switch -exact -- [dict get $date1 era] {
- BCE {
- dict set date1 fiscalYear [expr { [dict get $date1 year] - 1}]
- }
- CE {
- dict set date1 fiscalYear [expr { [dict get $date1 year] + 1}]
- }
- }
- dict unset date1 year
- dict unset date1 dayOfYear
- dict set date1 weekOfFiscalYear 1
- dict set date1 dayOfWeek $firstDayOfWeek
-
- set date1 [GetJulianDayFromEraYearWeekDay \
- $date1[set date1 {}] \
- $daysInFirstWeek \
- $firstDayOfWeek \
- { fiscalYear weekOfFiscalYear dayOfWeek }]
- set startOfFiscalYear [dict get $date1 julianDay]
-
- # If we guessed high, move one year earlier.
-
- if { $j < $startOfFiscalYear } {
- switch -exact -- [dict get $date1 era] {
- BCE {
- dict incr date1 fiscalYear
- }
- CE {
- dict incr date1 fiscalYear -1
- }
- }
- set date1 [GetJulianDayFromEraYearWeekDay \
- $date1[set date1 {}] \
- $daysInFirstWeek \
- $firstDayOfWeek \
- {fiscalYear weekOfFiscalYear dayOfWeek }]
- set startOfFiscalYear [dict get $date1 julianDay]
- }
-
- # Get the week number and the day within the week
-
- set fiscalYear [dict get $date1 fiscalYear]
- set dayOfFiscalYear [expr { $j - $startOfFiscalYear }]
- set weekOfFiscalYear [expr { ( $dayOfFiscalYear / 7 ) + 1 }]
- set dayOfWeek [expr { ( $dayOfFiscalYear + 1 ) % 7 }]
- if { $dayOfWeek < $firstDayOfWeek } {
- incr dayOfWeek 7
- }
-
- # Store the fiscal year, week, and day in the given slots in the
- # given dictionary.
-
- foreach key $keys \
- value [list $fiscalYear $weekOfFiscalYear $dayOfWeek] {
- dict set date $key $value
- }
-
- return $date
-}
#----------------------------------------------------------------------
#
@@ -4408,6 +3900,9 @@ proc ::tcl::clock::GetYearWeekDay { date
# that gives the Julian Day Number corresponding to the given
# date.
#
+# Bugs:
+# This code needs to be moved to the C layer.
+#
#----------------------------------------------------------------------
proc ::tcl::clock::GetJulianDayFromEraYearWeekDay {
@@ -4467,6 +3962,9 @@ proc ::tcl::clock::GetJulianDayFromEraYearWeekDay {
# Side effects:
# None.
#
+# Bugs:
+# This code needs to be moved to the C layer.
+#
#----------------------------------------------------------------------
proc ::tcl::clock::GetJulianDayFromEraYearMonthDay { date } {
@@ -4552,6 +4050,9 @@ proc ::tcl::clock::GetJulianDayFromEraYearMonthDay { date } {
# Side effects:
# None.
#
+# Bugs:
+# This code needs to be moved to the C layer.
+#
#----------------------------------------------------------------------
proc ::tcl::clock::GetJulianDayFromEraYearDay { date } {
@@ -4609,6 +4110,9 @@ proc ::tcl::clock::GetJulianDayFromEraYearDay { date } {
# Side effects:
# None.
#
+# Bugs:
+# This code needs to be moved to the C layer.
+#
#----------------------------------------------------------------------
proc ::tcl::clock::GetJulianDayFromEraYearMonthWeekDay { date } {
@@ -4859,6 +4363,11 @@ proc ::tcl::clock::add { clockval args } {
}
EnterLocale $locale oldLocale
+
+ if {[catch {SetupTimeZone $timezone} retval opts]} {
+ dict unset opts -errorinfo
+ return -options $opts $retval
+ }
set status [catch {
@@ -4946,15 +4455,13 @@ proc ::tcl::clock::AddMonths { months clockval timezone } {
variable DaysInRomanMonthInCommonYear
variable DaysInRomanMonthInLeapYear
+ variable TZData
+
+ set changeover [mc GREGORIAN_CHANGE_DATE]
# Convert the time to year, month, day, and fraction of day.
- set date [GetMonthDay \
- [GetGregorianEraYearDay \
- [GetJulianDay \
- [ConvertUTCToLocal \
- [dict create seconds $clockval] \
- $timezone]]]]
+ set date [GetDateFields $clockval $TZData($timezone) $changeover]
dict set date secondOfDay [expr { [dict get $date localSeconds]
% 86400 }]
dict set date tzName $timezone
@@ -4988,7 +4495,8 @@ proc ::tcl::clock::AddMonths { months clockval timezone } {
[expr { -210866803200
+ ( 86400 * wide([dict get $date julianDay]) )
+ [dict get $date secondOfDay] }]
- set date [ConvertLocalToUTC $date[set date {}]]
+ set date [ConvertLocalToUTC $date[set date {}] $TZData($timezone) \
+ $changeover]
return [dict get $date seconds]
@@ -5017,12 +4525,13 @@ proc ::tcl::clock::AddMonths { months clockval timezone } {
proc ::tcl::clock::AddDays { days clockval timezone } {
+ variable TZData
+
+ set changeover [mc GREGORIAN_CHANGE_DATE]
+
# Convert the time to Julian Day
- set date [GetJulianDay \
- [ConvertUTCToLocal \
- [dict create seconds $clockval] \
- $timezone]]
+ set date [GetDateFields $clockval $TZData($timezone) $changeover]
dict set date secondOfDay [expr { [dict get $date localSeconds]
% 86400 }]
dict set date tzName $timezone
@@ -5037,7 +4546,8 @@ proc ::tcl::clock::AddDays { days clockval timezone } {
[expr { -210866803200
+ ( 86400 * wide([dict get $date julianDay]) )
+ [dict get $date secondOfDay] }]
- set date [ConvertLocalToUTC $date[set date {}]]
+ set date [ConvertLocalToUTC $date[set date {}] $TZData($timezone) \
+ $changeover]
return [dict get $date seconds]