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added pre and post run hooks.

This commit is contained in:
Alexander Thaller 2015-02-09 23:44:14 +01:00 committed by Eric Paris
parent 9cf0f3737d
commit 2df64026ba
1 changed files with 17 additions and 1 deletions
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18
command.go
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@ -59,6 +59,12 @@ type Command struct {
// Run runs the command.
// The args are the arguments after the command name.
Run func(cmd *Command, args []string)
// PreRun runs the command after the flags are parsed and before run.
// The args are the arguments after the command name.
PreRun func(cmd *Command, args []string)
// PostRun runs the command after run.
// The args are the arguments after the command name.
PostRun func(cmd *Command, args []string)
// Commands is the list of commands supported by this program.
commands []*Command
// Parent Command for this command
@ -448,7 +454,17 @@ func (c *Command) execute(a []string) (err error) {
c.preRun()
argWoFlags := c.Flags().Args()
if c.PreRun != nil {
c.PreRun(c, argWoFlags)
}
c.Run(c, argWoFlags)
if c.PostRun != nil {
c.PostRun(c, argWoFlags)
}
return nil
}
@ -942,7 +958,7 @@ func (c *Command) mergePersistentFlags() {
c.PersistentFlags().VisitAll(addtolocal)
}
rmerge = func(x *Command) {
if ! x.HasParent() {
if !x.HasParent() {
flag.CommandLine.VisitAll(func(f *flag.Flag) {
if x.PersistentFlags().Lookup(f.Name) == nil {
x.PersistentFlags().AddFlag(f)