Support --config option either before or after command verb.

diff --git a/main.go b/main.go
index 197541d..ee0def8 100644 (file)
--- a/main.go
+++ b/main.go
@@ -189,6 +189,19 @@ func main() {
        initCmdExec(&app.Commands)
        initCmdMisc(&app.Commands)
 
+       // Add --config option to all commands to support --config option either before or after command verb
+       // IOW support following both syntaxes:
+       //   xds-cli exec --config myprj.conf ...
+       //   xds-cli --config myprj.conf exec ...
+       for i, cmd := range app.Commands {
+               if len(cmd.Flags) > 0 {
+                       app.Commands[i].Flags = append(cmd.Flags, cli.StringFlag{Hidden: true, Name: "config, c"})
+               }
+               for j, subCmd := range cmd.Subcommands {
+                       app.Commands[i].Subcommands[j].Flags = append(subCmd.Flags, cli.StringFlag{Hidden: true, Name: "config, c"})
+               }
+       }
+
        sort.Sort(cli.FlagsByName(app.Flags))
        sort.Sort(cli.CommandsByName(app.Commands))