Add new urlutil option, and have these be reloadable

Handles #897 and part of #593

utils/init.go

@@ -2,8 +2,10 @@ package utils
 
 // OpenFileUtil defines the system utility to use to open files
 var OpenFileUtil = "open"
+var OpenUrlUtil = []string{}
 
 // Init initializes global settings in the wtf package
-func Init(openFileUtil string) {
+func Init(openFileUtil string, openUrlUtil []string) {
 	OpenFileUtil = openFileUtil
+	OpenUrlUtil = openUrlUtil
 }

utils/utils.go

@@ -100,6 +100,12 @@ func Includes(strs []string, val string) bool {
 // OpenFile opens the file defined in `path` via the operating system
 func OpenFile(path string) {
 	if (strings.HasPrefix(path, "http://")) || (strings.HasPrefix(path, "https://")) {
+		if len(OpenUrlUtil) > 0 {
+			commands := append(OpenUrlUtil, path)
+			args := commands[1:len(commands)]
+			exec.Command(commands[0], args...).Start()
+			return
+		}
 		switch runtime.GOOS {
 		case "linux":
 			exec.Command("xdg-open", path).Start()