add a quiet flag and some other fixes

Signed-off-by: Jeff Carr <jcarr@wit.com>

chomp.go

@@ -71,6 +71,9 @@ func Chomp(a interface{}) string {
 			log.Printf("shell.Chomp() FOUND *bytes.Buffer")
 			var tmp *bytes.Buffer
 			tmp = a.(*bytes.Buffer)
+			if (tmp == nil) {
+				return ""
+			}
 
 			var bytesSplice []byte
 			bytesSplice = tmp.Bytes()

shell.go

@@ -44,8 +44,8 @@ func InitCallback(f func(interface{}, int)) {
 }
 
 // this means it won't copy all the output to STDOUT
-func Quiet() {
-	quiet = true
+func Quiet(q bool) {
+	quiet = q
 }
 
 func Script(cmds string) int {

wget.go

@@ -12,6 +12,8 @@ package shell
 
 import "io"
 import "os"
+import "fmt"
+import "log"
 import "bytes"
 import "strings"
 import "net/http"
@@ -32,6 +34,12 @@ func Wget(url string) (*bytes.Buffer) {
 	}
 	defer resp.Body.Close()
 
+	log.Printf("res.StatusCode: %d\n", resp.StatusCode)
+	if (resp.StatusCode == 404) {
+		handleError(fmt.Errorf("404"), -1)
+		return nil
+	}
+
 	buf.ReadFrom(resp.Body)
 	return buf
 }