lcd number ( ported from http://rubyquiz.com/quiz14.html)

states.go

package main

import "os"
import "fmt"
// import "sort"
import "strings"
import "time"
var LCD_STATES =[]string {
		"HORIZONTAL",
		"VERTICAL",
		"HORIZONTAL",
		"VERTICAL",
		"HORIZONTAL",
		"DONE",			
}
var LCD_DISPLAY_DATA = map[string][]int {
		"0" : {1,3,0,3,1},
		"1" : {0,1,0,1,0},
		"2" : {1,1,1,2,1},
		"3" : {1,1,1,1,1},
		"4" : {0,3,1,1,0},
		"5" : {1,2,1,1,1},
		"6" : {1,2,1,3,1},
		"7" : {1,1,0,1,0},
		"8" : {1,3,1,3,1},
		"9" : {1,3,1,1,1},
																								
	}

type LCD struct {
	size, spacing int
}

func (lcd LCD) horizontal_segment(type_ int) string{
		switch type_ {
			case 1:
				return " " + strings.Repeat("-", lcd.size) + " " + strings.Repeat(" ", lcd.spacing)
			default:				
				return " " + strings.Repeat(" ", lcd.size) + " " + strings.Repeat(" ", lcd.spacing)
		}
}
func (lcd LCD) vertical_segment(type_ int) string{
		switch type_ {
			case 1:
				return " " + strings.Repeat(" ", lcd.size) + "|" + strings.Repeat(" ", lcd.spacing)
			case 2:
				return "|" + strings.Repeat(" ", lcd.size) + "" + strings.Repeat(" ", lcd.spacing)
			case 3:
				return "|" + strings.Repeat(" ", lcd.size) + "|" + strings.Repeat(" ", lcd.spacing)								
			default:				
				return " " + strings.Repeat(" ", lcd.size) + " " + strings.Repeat(" ", lcd.spacing)
		}
}
func (lcd LCD) display(digits string) {
   for i, state := range LCD_STATES {
	  switch state {
	    case "HORIZONTAL":
	    	line := ""
	        for _, b := range digits {
	        	var type_ = LCD_DISPLAY_DATA[string(b)][i]
	        	line += lcd.horizontal_segment(type_)
	        }
	        fmt.Println(line+"\n")
	    case "VERTICAL":
	    	for j:=0;j< lcd.size;j++ {
		    	line := ""
		        for _, b := range digits {
		        	var type_ = LCD_DISPLAY_DATA[string(b)][i]
		        	line += lcd.vertical_segment(type_)
		        }
		        fmt.Println(line+"\n")	    		
	    	}
	    case "DONE":
	        break
	   }
	   // sleep here to see line is rendered one by one
	   time.Sleep(1000 * time.Millisecond)   	
    }	

}


func main(){
	digits := os.Args[1:]
	fmt.Println(digits)
	lcd := LCD{size:2,spacing:2}
	lcd.display(digits[0])
}