display.go - talks -

display.go (687B)
      1 package main
      2 
      3 import (
      4 	"fmt"
      5 	"time"
      6 )
      7 
      8 const (
      9 	title = "TOP TEN ZIP CODES BY HIGHEST CURRENT TEMPERATURE"
     10 )
     11 
     12 func display(ztchan chan []*ZipTemp, done chan struct{}) {
     13 	for {
     14 		locations, more := <-ztchan
     15 		if !more {
     16 			done <- struct{}{}
     17 			return
     18 		}
     19 
     20 		// Clear the screen.
     21 		print("\033[H\033[2J")
     22 
     23 		// Print the title and top ten.
     24 		fmt.Println(title)
     25 		fmt.Printf(
     26 			"Last update: %s.\n\n",
     27 			time.Now().Format(time.RFC1123),
     28 		)
     29 
     30 		for i, zt := range locations {
     31 			if zt == nil {
     32 				fmt.Printf("%d. No data\n", i+1)
     33 
     34 				continue
     35 			}
     36 
     37 			fmt.Printf(
     38 				"%d. %.02f°F %s (%s, %s)\n",
     39 				i+1,
     40 				zt.Temperature,
     41 				zt.ZipCode,
     42 				zt.City,
     43 				zt.State,
     44 			)
     45 		}
     46 	}
     47 }