/usr/share/doc/ruby1.8-examples/examples/cal.rb is in ruby1.8-examples 1.8.7.352-2ubuntu1.6.
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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 | #!/usr/bin/ruby1.8
# cal.rb: Written by Tadayoshi Funaba 1998-2004,2006,2008
# $Id: cal.rb,v 2.11 2008-01-06 08:42:17+09 tadf Exp $
require 'date'
class Cal
START =
{
'cn' => Date::GREGORIAN, # China
'de' => 2342032, # Germany (protestant states)
'dk' => 2342032, # Denmark
'es' => 2299161, # Spain
'fi' => 2361390, # Finland
'fr' => 2299227, # France
'gb' => 2361222, # United Kingdom
'gr' => 2423868, # Greece
'hu' => 2301004, # Hungary
'it' => 2299161, # Italy
'jp' => Date::GREGORIAN, # Japan
'no' => 2342032, # Norway
'pl' => 2299161, # Poland
'pt' => 2299161, # Portugal
'ru' => 2421639, # Russia
'se' => 2361390, # Sweden
'us' => 2361222, # United States
'os' => Date::JULIAN, # (old style)
'ns' => Date::GREGORIAN # (new style)
}
DEFAULT_START = 'gb'
def initialize
opt_j; opt_m; opt_t; opt_y; opt_c
end
def opt_j(flag=false) @opt_j = flag end
def opt_m(flag=false) @opt_m = flag end
def opt_t(flag=false) @opt_t = flag end
def opt_y(flag=false) @opt_y = flag end
def opt_c(arg=DEFAULT_START) @start = START[arg] end
def set_params
@dw = if @opt_j then 3 else 2 end
@mw = (@dw + 1) * 7 - 1
@mn = if @opt_j then 2 else 3 end
@tw = (@mw + 2) * @mn - 2
@k = if @opt_m then 1 else 0 end
@da = if @opt_j then :yday else :mday end
end
def pict(y, m)
d = (1..31).detect{|x| Date.valid_date?(y, m, x, @start)}
fi = Date.new(y, m, d, @start)
fi -= (fi.jd - @k + 1) % 7
ve = (fi..fi + 6).collect{|cu|
%w(S M Tu W Th F S)[cu.wday]
}
ve += (fi..fi + 41).collect{|cu|
if cu.mon == m then cu.send(@da) end.to_s
}
ve = ve.collect{|e| e.rjust(@dw)}
gr = group(ve, 7)
gr = trans(gr) if @opt_t
ta = gr.collect{|xs| xs.join(' ')}
ca = %w(January February March April May June July
August September October November December)[m - 1]
ca = ca + ' ' + y.to_s if !@opt_y
ca = ca.center(@mw)
ta.unshift(ca)
end
def group(xs, n)
(0..xs.size / n - 1).collect{|i| xs[i * n, n]}
end
def trans(xs)
(0..xs[0].size - 1).collect{|i| xs.collect{|x| x[i]}}
end
def stack(xs)
if xs.empty? then [] else xs[0] + stack(xs[1..-1]) end
end
def block(xs, n)
stack(group(xs, n).collect{|ys| trans(ys).collect{|zs| zs.join(' ')}})
end
def unlines(xs)
xs.collect{|x| x + "\n"}.join
end
def monthly(y, m)
unlines(pict(y, m))
end
def addmon(y, m, n)
y, m = (y * 12 + (m - 1) + n).divmod(12)
return y, m + 1
end
def yearly(y)
y.to_s.center(@tw) + "\n\n" +
unlines(block((0..11).collect{|n| pict(*addmon(y, 1, n))}, @mn)) + "\n"
end
def print(y, m)
set_params
if @opt_y then yearly(y) else monthly(y, m) end
end
end
if __FILE__ == $0
require 'getoptlong'
def usage
warn 'usage: cal [-c iso3166] [-jmty] [[month] year]'
exit 1
end
cal = Cal.new
begin
GetoptLong.new(['-c', GetoptLong::REQUIRED_ARGUMENT],
['-j', GetoptLong::NO_ARGUMENT],
['-m', GetoptLong::NO_ARGUMENT],
['-t', GetoptLong::NO_ARGUMENT],
['-y', GetoptLong::NO_ARGUMENT]).
each do |opt, arg|
case opt
when '-c'; cal.opt_c(arg) || raise
when '-j'; cal.opt_j(true)
when '-m'; cal.opt_m(true)
when '-t'; cal.opt_t(true)
when '-y'; cal.opt_y(true)
end
end
rescue
usage
end
y, m = ARGV.values_at(1, 0).compact.collect{|x| x.to_i}
cal.opt_y(true) if y && !m
to = Date.today
y ||= to.year
m ||= to.mon
usage unless m >= 1 && m <= 12
usage unless y >= -4712
print cal.print(y, m)
end
# See Bird & Wadler's Introduction to functional programming 4.5.
|