Implement cli.CommandAutocomplete for most commands

command/build.go

@@ -13,6 +13,8 @@ import (
 	"github.com/hashicorp/packer/helper/enumflag"
 	"github.com/hashicorp/packer/packer"
 	"github.com/hashicorp/packer/template"
+
+	"github.com/posener/complete"
 )
 
 type BuildCommand struct {
@@ -306,3 +308,22 @@ Options:
 func (*BuildCommand) Synopsis() string {
 	return "build image(s) from template"
 }
+
+func (*BuildCommand) AutocompleteArgs() complete.Predictor {
+	return complete.PredictNothing
+}
+
+func (*BuildCommand) AutocompleteFlags() complete.Flags {
+	return complete.Flags{
+		"-color":            complete.PredictNothing,
+		"-debug":            complete.PredictNothing,
+		"-except":           complete.PredictNothing,
+		"-only":             complete.PredictNothing,
+		"-force":            complete.PredictNothing,
+		"-machine-readable": complete.PredictNothing,
+		"-on-error":         complete.PredictNothing,
+		"-parallel":         complete.PredictNothing,
+		"-var":              complete.PredictNothing,
+		"-var-file":         complete.PredictNothing,
+	}
+}

command/fix.go

@@ -10,6 +10,8 @@ import (
 
 	"github.com/hashicorp/packer/fix"
 	"github.com/hashicorp/packer/template"
+
+	"github.com/posener/complete"
 )
 
 type FixCommand struct {
@@ -140,3 +142,13 @@ Options:
 func (c *FixCommand) Synopsis() string {
 	return "fixes templates from old versions of packer"
 }
+
+func (c *FixCommand) AutocompleteArgs() complete.Predictor {
+	return complete.PredictNothing
+}
+
+func (c *FixCommand) AutocompleteFlags() complete.Flags {
+	return complete.Flags{
+		"-validate": complete.PredictNothing,
+	}
+}

command/inspect.go

@@ -6,6 +6,8 @@ import (
 	"strings"
 
 	"github.com/hashicorp/packer/template"
+
+	"github.com/posener/complete"
 )
 
 type InspectCommand struct {
@@ -160,3 +162,13 @@ Options:
 func (c *InspectCommand) Synopsis() string {
 	return "see components of a template"
 }
+
+func (c *InspectCommand) AutocompleteArgs() complete.Predictor {
+	return complete.PredictNothing
+}
+
+func (c *InspectCommand) AutocompleteFlags() complete.Flags {
+	return complete.Flags{
+		"-machine-readable": complete.PredictNothing,
+	}
+}

command/push.go

@@ -14,6 +14,8 @@ import (
 	"github.com/hashicorp/packer/helper/flag-kv"
 	"github.com/hashicorp/packer/helper/flag-slice"
 	"github.com/hashicorp/packer/template"
+
+	"github.com/posener/complete"
 )
 
 // archiveTemplateEntry is the name the template always takes within the slug.
@@ -324,6 +326,20 @@ func (*PushCommand) Synopsis() string {
 	return "push a template and supporting files to a Packer build service"
 }
 
+func (*PushCommand) AutocompleteArgs() complete.Predictor {
+	return complete.PredictNothing
+}
+
+func (*PushCommand) AutocompleteFlags() complete.Flags {
+	return complete.Flags{
+		"-name":      complete.PredictNothing,
+		"-token":     complete.PredictNothing,
+		"-sensitive": complete.PredictNothing,
+		"-var":       complete.PredictNothing,
+		"-var-file":  complete.PredictNothing,
+	}
+}
+
 func (c *PushCommand) upload(
 	r *archive.Archive, opts *uploadOpts) (<-chan struct{}, <-chan error, error) {
 	if c.uploadFn != nil {

command/validate.go

@@ -7,6 +7,8 @@ import (
 
 	"github.com/hashicorp/packer/packer"
 	"github.com/hashicorp/packer/template"
+
+	"github.com/posener/complete"
 )
 
 type ValidateCommand struct {
@@ -136,3 +138,17 @@ Options:
 func (*ValidateCommand) Synopsis() string {
 	return "check that a template is valid"
 }
+
+func (*ValidateCommand) AutocompleteArgs() complete.Predictor {
+	return complete.PredictNothing
+}
+
+func (*ValidateCommand) AutocompleteFlags() complete.Flags {
+	return complete.Flags{
+		"-syntax-only": complete.PredictNothing,
+		"-except":      complete.PredictNothing,
+		"-only":        complete.PredictNothing,
+		"-var":         complete.PredictNothing,
+		"-var-file":    complete.PredictNothing,
+	}
+}