diff options
Diffstat (limited to 'library/clock.tcl')
| -rw-r--r-- | library/clock.tcl | 37 |
1 files changed, 21 insertions, 16 deletions
diff --git a/library/clock.tcl b/library/clock.tcl index 2cf4ada..0696c47 100644 --- a/library/clock.tcl +++ b/library/clock.tcl @@ -13,8 +13,6 @@ # 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 1.60 2010/02/09 22:27:46 dkf Exp $ -# #---------------------------------------------------------------------- # We must have message catalogs that support the root locale, and we need @@ -3014,18 +3012,23 @@ proc ::tcl::clock::GetSystemTimeZone {} { set timezone $result } elseif {[set result [getenv TZ]] ne {}} { set timezone $result - } elseif { [info exists CachedSystemTimeZone] } { - set timezone $CachedSystemTimeZone - } elseif { $::tcl_platform(platform) eq {windows} } { - set timezone [GuessWindowsTimeZone] - } elseif { [file exists /etc/localtime] - && ![catch {ReadZoneinfoFile \ - Tcl/Localtime /etc/localtime}] } { - set timezone :Tcl/Localtime - } else { - set timezone :localtime } - set CachedSystemTimeZone $timezone + if {![info exists timezone]} { + # Cache the time zone only if it was detected by one of the + # expensive methods. + if { [info exists CachedSystemTimeZone] } { + set timezone $CachedSystemTimeZone + } elseif { $::tcl_platform(platform) eq {windows} } { + set timezone [GuessWindowsTimeZone] + } elseif { [file exists /etc/localtime] + && ![catch {ReadZoneinfoFile \ + Tcl/Localtime /etc/localtime}] } { + set timezone :Tcl/Localtime + } else { + set timezone :localtime + } + set CachedSystemTimeZone $timezone + } if { ![dict exists $TimeZoneBad $timezone] } { dict set TimeZoneBad $timezone [catch {SetupTimeZone $timezone}] } @@ -3408,7 +3411,7 @@ proc ::tcl::clock::LoadZoneinfoFile { fileName } { proc ::tcl::clock::ReadZoneinfoFile {fileName fname} { variable MINWIDE variable TZData - if { ![info exists fname] } { + if { ![file exists $fname] } { return -code error "$fileName not found" } @@ -3499,8 +3502,10 @@ proc ::tcl::clock::ReadZoneinfoFile {fileName fname} { set i 0 set abbrevs {} foreach a $abbrList { - dict set abbrevs $i $a - incr i [expr { [string length $a] + 1 }] + for {set j 0} {$j <= [string length $a]} {incr j} { + dict set abbrevs $i [string range $a $j end] + incr i + } } # Package up a list of tuples, each of which contains transition time, |