Class: BTCT::Terminal

Inherits:
Object
  • Object
show all
Defined in:
lib/btct/terminal.rb

Instance Method Summary collapse

Constructor Details

#initialize(argv) ⇒ Terminal 



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# File 'lib/btct/terminal.rb', line 11

def initialize(argv)
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/btct/terminal.rb', line 14

def run
  sources = [
    BitstampAPI.new,
    BtceAPI.new,
    CampBxAPI.new,
    MtGoxAPI.new,
    TheRockAPI.new
  ]
  begin
    def onsig(sig)
      Curses.close_screen
      exit sig
    end
    for i in %w[HUP INT QUIT TERM]
      if trap(i, "SIG_IGN") != 0 then  # 0 for SIG_IGN
        trap(i) {|sig| onsig(sig) }
      end
    end
    Curses.init_screen
    Curses.nl
    Curses.noecho
    Curses.setpos(0,  0) ; Curses.addstr "BTC/USD"
    Curses.setpos(0, 21) ; Curses.addstr "Bid"
    Curses.setpos(0, 46) ; Curses.addstr "Ask"
    Curses.setpos(1, 14) ; Curses.addstr "Amount       Price"
    Curses.setpos(1, 39) ; Curses.addstr "Price      Amount"
    Curses.refresh
    while true
      bids = Array.new
      asks = Array.new
      sources.each do |source|
        bid, ask = source.top
        bids.push(bid)
        asks.push(ask)
      end
      bids.sort! { |x,y| y.price <=> x.price }
      asks.sort! { |x,y| x.price <=> y.price }
      row = 2
      bids.zip(asks).each do |bid, ask|
        text = "%-10s %10.6f %12.6f  %-12.6f %-10.6f %-10s" % [bid.exchange, bid.amount, bid.price, ask.price, ask.amount, ask.exchange]
        Curses.setpos(row, 0) ; Curses.addstr text
        row = row + 1
      end
      Curses.refresh
      sleep 5
    end
  ensure
    Curses.close_screen
  end
end