fix when no device connected, fa devices --json output null

codeskyblue · codeskyblue · commit f7149d96dba9 · 2018-12-18T10:57:25.000+08:00
diff --git a/main.go b/main.go
@@ -57,6 +57,7 @@ func listDevices() (ds []Device, err error) {
 	}
 	re := regexp.MustCompile(`(?m)^([^\s]+)\s+(device|offline|unauthorized)\s*$`)
 	matches := re.FindAllStringSubmatch(string(output), -1)
+	ds = make([]Device, 0, len(matches))
 	for _, m := range matches {
 		status := m[2]
 		ds = append(ds, Device{

Original file line number	Diff line number	Diff line change
`@@ -57,6 +57,7 @@ func listDevices() (ds []Device, err error) {`
`57`	`57`	`}`
`58`	`58`	re := regexp.MustCompile(`(?m)^([^\s]+)\s+(device\|offline\|unauthorized)\s*$`)
`59`	`59`	`matches := re.FindAllStringSubmatch(string(output), -1)`
	`60`	`+ ds = make([]Device, 0, len(matches))`
`60`	`61`	`for _, m := range matches {`
`61`	`62`	`status := m[2]`
`62`	`63`	`ds = append(ds, Device{`