Use numerical form of time zone to replace alphabetic time zone abbreviation generated by "%Z". "%Z" is not portable and contain ambiguity for many areas. For example, CST could be "Central Standard Time" (GMT-0600) and "China Standard Time" (GMT+0800). Alphabetic time zone abbreviation is meant for human readability, not for specifying a time zone for machines.
Failed case can be illustrated like this in linux shell: > echo $TZ Asia/Taipei > date +%Z CST > env TZ=`date +%Z` date Mon Dec 19 06:03:04 CST 2011 > date Mon Dec 19 14:03:04 CST 2011
Signed-off-by: Wei-Yin Chen (陳威尹) <chen.weiyin@gmail.com> --- git-svn.perl | 18 +++++++++++------- 1 files changed, 11 insertions(+), 7 deletions(-)
Show changes to git-svn.perl +11 −7
diff --git a/git-svn.perl b/git-svn.perl index e30df22..f0b6340 100755 --- a/git-svn.perl +++ b/git-svn.perl @@ -2029,6 +2029,7 @@ use Carp qw/croak/; use File::Path qw/mkpath/; use File::Copy qw/copy/; use IPC::Open3; +use Time::Local; use Memoize; # core since 5.8.0, Jul 2002 use Memoize::Storable; @@ -3287,6 +3288,14 @@ sub get_untracked { \@out; } +sub get_tz { + # some systmes don't handle or mishandle %z, so be creative. + my $t = shift || time; + my $gm = timelocal(gmtime($t)); + my $sign = qw( + + - )[ $t <=> $gm ]; + return sprintf("%s%02d%02d", $sign, (gmtime(abs($t - $gm)))[2,1]); +} + # parse_svn_date(DATE) # -------------------- # Given a date (in UTC) from Subversion, return a string in the format @@ -3319,8 +3328,7 @@ sub parse_svn_date { delete $ENV{TZ}; } - my $our_TZ = - POSIX::strftime('%Z', $S, $M, $H, $d, $m - 1, $Y - 1900); + my $our_TZ = get_tz(); # This converts $epoch_in_UTC into our local timezone. my ($sec, $min, $hour, $mday, $mon, $year, @@ -5994,7 +6002,6 @@ package Git::SVN::Log; use strict; use warnings; use POSIX qw/strftime/; -use Time::Local; use constant commit_log_separator => ('-' x 72) . "\n"; use vars qw/$TZ $limit $color $pager $non_recursive $verbose $oneline %rusers $show_commit $incremental/; @@ -6104,11 +6111,8 @@ sub run_pager { } sub format_svn_date { - # some systmes don't handle or mishandle %z, so be creative. my $t = shift || time; - my $gm = timelocal(gmtime($t)); - my $sign = qw( + + - )[ $t <=> $gm ]; - my $gmoff = sprintf("%s%02d%02d", $sign, (gmtime(abs($t - $gm)))[2,1]); + my $gmoff = get_tz($t); return strftime("%Y-%m-%d %H:%M:%S $gmoff (%a, %d %b %Y)", localtime($t)); }