From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <jari.vetoniemi@indooratlas.com>
Date: Mon, 16 Mar 2020 18:49:26 +0900
Subject: Fresh start

---
 jni/ruby/sample/cal.rb | 166 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 166 insertions(+)
 create mode 100644 jni/ruby/sample/cal.rb

(limited to 'jni/ruby/sample/cal.rb')

diff --git a/jni/ruby/sample/cal.rb b/jni/ruby/sample/cal.rb
new file mode 100644
index 0000000..97f75bc
--- /dev/null
+++ b/jni/ruby/sample/cal.rb
@@ -0,0 +1,166 @@
+#! /usr/bin/env ruby
+
+# 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.
-- 
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