From a29104ce4bbe4afc2aa1cca3b941747237a70c49 Mon Sep 17 00:00:00 2001
From: Silvan Jegen <s.jegen@gmail.com>
Date: Fri, 23 Oct 2015 18:53:25 +0200
Subject: Fix tabwriter issue

There is a race condition now.
---
 gwic.go | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/gwic.go b/gwic.go
index b71a307..98ee34f 100644
--- a/gwic.go
+++ b/gwic.go
@@ -75,17 +75,17 @@ func feedworkers(wlist []*work, w string) []*work {
 	return ret
 }
 
-func print_kwic(sl []string, c chan string) {
+func print_kwic(sl []string, c chan string, out chan string) {
 	for w := range c {
 		sl = append(sl, w)
 	}
-	fmt.Fprintf(tw, "%s\n", strings.Join(sl, "\t"))
+	out <- strings.Join(sl, "\t")
 }
 
-func printqueue(q *queue, c chan string, left int) {
+func printqueue(q *queue, words chan string, left int, out chan string) {
 	var hungryhippos []*work
 
-	for w := range c {
+	for w := range words {
 		index := strings.Index(w, kw)
 		if index < 0 {
 			q.insert(w)
@@ -108,11 +108,12 @@ func printqueue(q *queue, c chan string, left int) {
 		//fmt.Fprintf(os.Stdout, "copied %d : %v\n", n, sl)
 		hungryhippos = append(hungryhippos, wc)
 		//fmt.Fprintf(os.Stderr, "appended hungryhippos: %v %d\n", hungryhippos, len(hungryhippos))
-		go print_kwic(sl, wc.c)
+		go print_kwic(sl, wc.c, out)
 	}
 	for _, wc := range hungryhippos {
 		close(wc.c)
 	}
+	close(out)
 }
 
 var (
@@ -134,6 +135,7 @@ func main() {
 
 	q := queue{maxl: MAX, q: make([]string, MAX)}
 	sc := make(chan string, 1000)
+	out := make(chan string, 1000)
 
 	reader := bufio.NewReader(os.Stdin)
 	line, err := reader.ReadString(byte('\n'))
@@ -151,7 +153,10 @@ func main() {
 		close(c)
 	}(sc)
 
-	printqueue(&q, sc, 5)
-	fmt.Printf("Reached end\n")
+	go printqueue(&q, sc, 5, out)
+
+	for l := range out {
+		fmt.Fprintf(tw, "%s\n", l)
+	}
 	tw.Flush()
 }
-- 
cgit v1.2.1-18-gbd029