// RunCommand runs a command with the specified args. The returned error
// may come from either the parsing of the args, the command initialisation, or
// the actual running of the command. Access to the resulting output streams
// is provided through the returned context instance.
func RunCommand(c *gc.C, com cmd.Command, args ...string) (*cmd.Context, error) {
if err := InitCommand(com, args); err != nil {
return nil, err
}
var context = Context(c)
return context, com.Run(context)
}
// RunCommandInDir works like RunCommand, but runs with a context that uses dir.
func RunCommandInDir(c *gc.C, com cmd.Command, args []string, dir string) (*cmd.Context, error) {
if err := InitCommand(com, args); err != nil {
return nil, err
}
var context = ContextForDir(c, dir)
return context, com.Run(context)
}
func runCommand(ctx *cmd.Context, com cmd.Command, args ...string) (opc chan dummy.Operation, errc chan error) {
if ctx == nil {
panic("ctx == nil")
}
errc = make(chan error, 1)
opc = make(chan dummy.Operation, 200)
dummy.Listen(opc)
go func() {
// signal that we're done with this ops channel.
defer dummy.Listen(nil)
err := coretesting.InitCommand(com, args)
if err != nil {
errc <- err
return
}
err = com.Run(ctx)
errc <- err
}()
return
}