Converted quotes fetcher to goroutine

lib/format.go

@@ -4,11 +4,11 @@ package mop
 
 import (
 	"fmt"
+	"time"
 	"bytes"
         "regexp"
         "strings"
 	"text/template"
-	"time"
 )
 
 //-----------------------------------------------------------------------------
@@ -24,7 +24,7 @@ func Format(quotes Quotes) string {
 	}
 
 	markup :=
-		`Hello<right>{{.Now}}</right>
+		`Hello<right><white>{{.Now}}</white></right>
 
 {{.Header}}
 {{range .Stocks}}{{.Color}}{{.Ticker}} {{.LastTrade}} {{.Change}} {{.ChangePercent}} {{.Open}} {{.Low}} {{.High}} {{.Low52}} {{.High52}} {{.Volume}} {{.AvgVolume}} {{.PeRatio}} {{.Dividend}} {{.Yield}} {{.MarketCap}}
@@ -41,7 +41,7 @@ func Format(quotes Quotes) string {
 		panic(err)
 	}
 
-	return buffer.String()
+        return buffer.String()
 }
 
 func header() string {

lib/screen.go

@@ -5,6 +5,7 @@ package mop
 import (
 	"github.com/michaeldv/just"
 	"github.com/nsf/termbox-go"
+        "time"
 	"regexp"
 	"strings"
 )
@@ -39,6 +40,12 @@ func Draw(stocks string) {
 	drawScreen(Format(quotes))
 }
 
+//-----------------------------------------------------------------------------
+func DrawTime() {
+        now := time.Now().Format("3:04:05pm PST")
+        drawLine(0, 0, "<right>" + now + "</right>")
+}
+
 //
 // Return regular expression that matches all possible tags, i.e.
 // </?black>|</?red>| ... |</?white>
@@ -108,6 +115,7 @@ func drawLine(x int, y int, str string) {
 			column += 1
 		}
 	}
+        termbox.Flush()
 }
 
 //-----------------------------------------------------------------------------
@@ -116,5 +124,4 @@ func drawScreen(str string) {
 	for row, line := range strings.Split(str, "\n") {
 		drawLine(0, row, line)
 	}
-	termbox.Flush()
 }

lib/yahoo_finance.go

@@ -4,7 +4,6 @@ package mop
 
 import (
         "fmt"
-        "time"
         "bytes"
         "strings"
         "net/http"
@@ -59,13 +58,8 @@ type Quote struct {
 }
 type Quotes []Quote
 
-var quotes Quotes
-
 // func Get(tickers []string) Quotes {
 func Get(tickers string) Quotes {
-	if len(quotes) > 0 && time.Now().Second() % 5 != 0 { // Fetch quotes every 5 seconds.
-		return quotes
-	}
 
         // Format the URL and send the request.
         // url := fmt.Sprintf(yahoo_finance_url, strings.Join(tickers, "+"))
@@ -81,9 +75,8 @@ func Get(tickers string) Quotes {
 	if err != nil {
 		panic(err)
 	}
-        quotes = parse(sanitize(body))
 
-	return quotes
+        return parse(sanitize(body))
 }
 
 func (q *Quote) Color() string {

mop.go

@@ -18,12 +18,13 @@ func initTermbox() {
 
 //-----------------------------------------------------------------------------
 func mainLoop(profile string) {
-	event_queue := make(chan termbox.Event)
-	event_tick := time.NewTicker(1 * time.Second)
+	keyboard_queue := make(chan termbox.Event)
+	quotes_queue := time.NewTicker(5 * time.Second)
+	timestamp_queue := time.NewTicker(1 * time.Second)
 
 	go func() {
 		for {
-			event_queue <- termbox.PollEvent()
+			keyboard_queue <- termbox.PollEvent()
 		}
 	}()
 
@@ -31,7 +32,7 @@ func mainLoop(profile string) {
 loop:
 	for {
 		select {
-		case event := <-event_queue:
+		case event := <-keyboard_queue:
 			switch event.Type {
 			case termbox.EventKey:
 				if event.Key == termbox.KeyEsc {
@@ -40,8 +41,12 @@ loop:
 			case termbox.EventResize:
 				mop.Draw(profile)
 			}
-		case <-event_tick.C:
+
+		case <-quotes_queue.C:
 			mop.Draw(profile)
+
+		case <-timestamp_queue.C:
+			mop.DrawTime()
 		}
 	}
 }