From c87fc65436c8e36d3daa4e95f9781b4fd8193767 Mon Sep 17 00:00:00 2001
From: Mark McGranaghan <mmcgrana@gmail.com>
Date: Thu, 11 Oct 2012 18:30:06 -0700
Subject: [PATCH] check all the errors. ref #15

---
 tools/generate.go | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/tools/generate.go b/tools/generate.go
index 15c7e75..cbb8510 100644
--- a/tools/generate.go
+++ b/tools/generate.go
@@ -36,13 +36,19 @@ func copyFile(src, dst string) {
 
 func pipe(bin string, arg []string, src string) []byte {
     cmd := exec.Command(bin, arg...)
-    in, _ := cmd.StdinPipe()
-    out, _ := cmd.StdoutPipe()
-    cmd.Start()
-    in.Write([]byte(src))
-    in.Close()
-    bytes, _ := ioutil.ReadAll(out)
-    err := cmd.Wait()
+    in, err := cmd.StdinPipe()
+    check(err)
+    out, err := cmd.StdoutPipe()
+    check(err)
+    err = cmd.Start()
+    check(err)
+    _, err = in.Write([]byte(src))
+    check(err)
+    err = in.Close()
+    check(err)
+    bytes, err := ioutil.ReadAll(out)
+    check(err)
+    err = cmd.Wait()
     check(err)
     return bytes
 }