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synced 2022-11-09 12:17:21 -05:00
52 lines
1.2 KiB
Ruby
52 lines
1.2 KiB
Ruby
# -*- mode: ruby -*-
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require 'nokogiri'
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require 'open-uri'
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doc = Nokogiri::HTML(URI.open(ARGV[0] || 'https://www.timeanddate.com/time/zones/'))
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h = {}
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doc.css('#tz-abb tbody tr').each do |tr|
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tds = tr.css('td')
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abbr = tds[0].text.strip.downcase
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offset = tds[3].text.strip.gsub(/UTC\s*/, '')
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next if offset.include?('/') # skip ambiguous timezones
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next if offset.empty?
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hour, min = offset.split(':', 2)
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offset = (Integer(hour) * 60 + (Integer(min || 0)))*60
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if h.has_key?(abbr)
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h[abbr] = false
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else
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h[abbr] = offset
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end
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end
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h.delete_if{|_,v| !v}
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lines = File.readlines('zonetab.list')
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lines.map! do |l|
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if (sep = /^%%/ =~ l)...(sep = /^%%/ =~ l) and !sep
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z, o = l.split(/,\s*/, 2)
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o.strip!
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if ho = h.delete(z) and ho != eval(o)
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warn "offset of #{z}: #{o} -> #{ho}"
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l = l.sub(/,\s*\K.*/) {
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if o.include?("*")
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o1, o2 = ho.abs.divmod(3600)
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o1 = "#{o1}*3600"
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o1 = "(#{o1}+#{o2})" if o2 != 0
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ho < 0 ? "-#{o1}" : o1
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else
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ho.to_s
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end
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}
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end
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end
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l
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end
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lines.insert(-2, h.sort.map{|k,v| "#{k},#{v}\n"})
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lines.flatten!
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File.write('zonetab.list', lines.join)
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