1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
#!/usr/bin/perl -w
#
# Vzic - a program to convert Olson timezone database files into VZTIMEZONE
# files compatible with the iCalendar specification (RFC2445).
#
# Copyright (C) 2000-2001 Ximian, Inc.
# Copyright (C) 2003 Damon Chaplin.
#
# Author: Damon Chaplin <damon@gnome.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
#
# This reads the Olson timezone files, strips any comments, and outputs them
# in a very simple format with tab-separated fields. It is used to compare
# with the output of dump_zone_data() and dump_rule_data() to double-check
# that we have parsed the files correctly.
#
my $zones_fh = "zonesfile";
my $rules_fh = "rulesfile";
my %Rules;
if ($#ARGV != 0) {
die "Usage: $0 <OlsonDirectory>";
}
my $OLSON_DIR = $ARGV[0];
# We place output in subdirectories of the current directory.
my $OUTPUT_DIR = "zoneinfo";
if (! -d "$OUTPUT_DIR") {
mkdir ("$OUTPUT_DIR", 0777)
|| die "Can't create directory: $OUTPUT_DIR";
}
if (! -d "$OUTPUT_DIR/ZonesPerl") {
mkdir ("$OUTPUT_DIR/ZonesPerl", 0777)
|| die "Can't create directory: $OUTPUT_DIR/ZonesPerl";
}
if (! -d "$OUTPUT_DIR/RulesPerl") {
mkdir ("$OUTPUT_DIR/RulesPerl", 0777)
|| die "Can't create directory: $OUTPUT_DIR/RulesPerl";
}
&ReadOlsonFile ("africa");
&ReadOlsonFile ("antarctica");
&ReadOlsonFile ("asia");
&ReadOlsonFile ("australasia");
&ReadOlsonFile ("europe");
&ReadOlsonFile ("northamerica");
&ReadOlsonFile ("southamerica");
# These are backwards-compatability and weird stuff.
#&ReadOlsonFile ("backward");
#&ReadOlsonFile ("etcetera");
#&ReadOlsonFile ("leapseconds");
#&ReadOlsonFile ("pacificnew");
#&ReadOlsonFile ("solar87");
#&ReadOlsonFile ("solar88");
#&ReadOlsonFile ("solar89");
# We don't do this one since it is not useful and the use of '"' in the Zone
# line messes up our split() command.
#&ReadOlsonFile ("factory");
# We don't do this since the vzic program can't do it.
#&ReadOlsonFile ("systemv");
1;
sub ReadOlsonFile {
my ($file) = @_;
# print ("Reading olson file: $file\n");
open (OLSONFILE, "$OLSON_DIR/$file")
|| die "Can't open file: $file";
open ($zones_fh, ">$OUTPUT_DIR/ZonesPerl/$file")
|| die "Can't open file: $OUTPUT_DIR/ZonesPerl/$file";
open ($rules_fh, ">$OUTPUT_DIR/RulesPerl/$file")
|| die "Can't open file: $OUTPUT_DIR/RulesPerl/$file";
%Rules = ();
my $zone_continues = 0;
while (<OLSONFILE>) {
next if (m/^#/);
# '#' characters can appear in strings, but the Olson files don't use
# that feature at present so we treat all '#' as comments for now.
s/#.*//;
next if (m/^\s*$/);
if ($zone_continues) {
$zone_continues = &ReadZoneContinuationLine;
} elsif (m/^Rule\s/) {
&ReadRuleLine;
} elsif (m/^Zone\s/) {
$zone_continues = &ReadZoneLine;
} elsif (m/^Link\s/) {
# print "Link: $link_from, $link_to\n";
} elsif (m/^Leap\s/) {
# print "Leap\n";
} else {
die "Invalid line: $_";
}
}
# print ("Read olson file: $file\n");
foreach $key (sort (keys (%Rules))) {
print $rules_fh "$Rules{$key}"
}
close ($zones_fh);
close ($rules_fh);
close (OLSONFILE);
}
sub ReadZoneLine {
my ($zone, $name, $gmtoff, $rules_save, $format,
$until_year, $until_month, $until_day, $until_time, $remainder)
= split ' ', $_, 10;
return &ReadZoneLineCommon ($zone, $name, $gmtoff, $rules_save, $format,
$until_year, $until_month, $until_day,
$until_time);
}
sub ReadZoneContinuationLine {
my ($gmtoff, $rules_save, $format,
$until_year, $until_month, $until_day, $until_time, $remainder)
= split ' ', $_, 8;
return &ReadZoneLineCommon ("", "", $gmtoff, $rules_save, $format,
$until_year, $until_month, $until_day,
$until_time);
}
sub ReadZoneLineCommon {
my ($zone, $name, $gmtoff, $rules_save, $format,
$until_year, $until_month, $until_day, $until_time) = @_;
if (!defined ($until_year)) { $until_year = ""; }
if (!defined ($until_month)) { $until_month = ""; }
if (!defined ($until_day)) { $until_day = ""; }
if (!defined ($until_time)) { $until_time = ""; }
# A few of the gmtoffsets have an unnecessary :00 seconds.
$gmtoff =~ s/(\d+):(\d+):00/$1:$2/;
# Make sure the gmtoff does have minutes.
$gmtoff =~ s/^(-?\d+)$/$1:00/;
# Fix a few other bits so they all use the same format.
if ($gmtoff eq "0") { $gmtoff = "0:00"; }
$until_time =~ s/^0(\d):/$1:/;
if ($until_time eq "0:00") { $until_time = ""; }
if ($until_day eq "1" && $until_time eq "") { $until_day = ""; }
if ($until_month eq "Jan" && $until_day eq "" && $until_time eq "") {
$until_month = "";
}
# For Zone continuation lines we need to insert an extra TAB.
if (!$zone) { $zone = "\t" };
print $zones_fh "$zone\t$name\t$gmtoff\t$rules_save\t$format\t$until_year\t$until_month\t$until_day\t$until_time\n";
if (defined ($until_year) && $until_year) {
return 1;
} else {
return 0;
}
}
sub ReadRuleLine {
my ($rule, $name, $from, $to, $type, $in, $on, $at, $save, $letter_s,
$remainder) = split;
$at =~ s/(\d+:\d+):00/$1/;
$save =~ s/(\d+:\d+):00/$1/;
if ($save eq "0:00") { $save = "0"; }
$Rules{$name} .= "$rule\t$name\t$from\t$to\t$type\t$in\t$on\t$at\t$save\t$letter_s\n";
# print $rules_fh "$rule\t$name\t$from\t$to\t$type\t$in\t$on\t$at\t$save\t$letter_s\n";
}
|
