diff --git a/command.go b/command.go index ede3243..c5a1977 100644 --- a/command.go +++ b/command.go @@ -65,6 +65,10 @@ type Command struct { // PostRun runs the command after run. // The args are the arguments after the command name. PostRun func(cmd *Command, args []string) + // PreRun which children of this command will inherit. + PersistentPreRun func(cmd *Command, args []string) + // PostRun which children of this command will inherit. + PersistentPostRun func(cmd *Command, args []string) // Commands is the list of commands supported by this program. commands []*Command // Parent Command for this command @@ -455,6 +459,9 @@ func (c *Command) execute(a []string) (err error) { c.preRun() argWoFlags := c.Flags().Args() + if c.PersistentPreRun != nil { + c.PersistentPreRun(c, argWoFlags) + } if c.PreRun != nil { c.PreRun(c, argWoFlags) } @@ -464,6 +471,9 @@ func (c *Command) execute(a []string) (err error) { if c.PostRun != nil { c.PostRun(c, argWoFlags) } + if c.PersistentPostRun != nil { + c.PersistentPostRun(c, argWoFlags) + } return nil } @@ -545,7 +555,9 @@ func (c *Command) initHelp() { Short: "Help about any command", Long: `Help provides help for any command in the application. Simply type ` + c.Name() + ` help [path to command] for full details.`, - Run: c.HelpFunc(), + Run: c.HelpFunc(), + PersistentPreRun: func(cmd *Command, args []string) {}, + PersistentPostRun: func(cmd *Command, args []string) {}, } } c.AddCommand(c.helpCommand) @@ -585,6 +597,14 @@ func (c *Command) AddCommand(cmds ...*Command) { c.commandsMaxNameLen = nameLen } c.commands = append(c.commands, x) + + // Pass on peristent pre/post functions to children + if x.PersistentPreRun == nil { + x.PersistentPreRun = c.PersistentPreRun + } + if x.PersistentPostRun == nil { + x.PersistentPostRun = c.PersistentPostRun + } } }