add completion stub code

Author: ailan-gl

bin/describe_regions

@@ -0,0 +1 @@
+aliyun ecs DescribeRegions | jq '.Regions.Region'| jq -r '["RegionId   ", "LocalName "], ["---------------------", "---------------------"],(.[] | [.RegionId, .LocalName]) | @tsv'

cli/command.go

@@ -6,6 +6,7 @@ package cli
 import (
 	"fmt"
 	"github.com/aliyun/aliyun-cli/i18n"
+	"os"
 )
 
 type Command struct {
@@ -41,6 +42,9 @@ type Command struct {
 	// Help
 	Help func(ctx *Context, args []string) error
 
+	// auto compete
+	AutoComplete func(ctx *Context) []string
+
 	suggestDistance int
 	parent			*Command
 	subCommands     []*Command
@@ -62,6 +66,13 @@ func (c *Command) Flags() (*FlagSet) {
 func (c *Command) Execute(args []string) {
 	ctx := NewCommandContext()
 	ctx.EnterCommand(c)
+	ctx.completion = NewCompletion()
+
+	//
+	// if
+	if ctx.completion != nil {
+		args = ctx.completion.GetArgs()
+	}
 
 	err := c.executeInner(ctx, args)
 	if err != nil {
@@ -103,8 +114,7 @@ func (c *Command) GetUsageWithParent() string {
 	}
 	return usage
 }
-//
-//
+
 func (c *Command) executeInner(ctx *Context, args []string) error {
 	//
 	// fmt.Printf(">>> Execute Command: %s args=%v\n", c.Name, args)

cli/completion.go

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2017-2018 Alibaba Group Holding Limited
+ */
+package cli
+
+import (
+	"os"
+	"strconv"
+	"strings"
+)
+
+type Completion struct {
+	Words []string
+	Line string
+	Point int
+}
+
+func NewCompletion() *Completion {
+	line := os.Getenv("COMP_LINE")
+	point, _ := strconv.Atoi(os.Getenv("COMP_POINT"))
+	words := os.Getenv("COMP_WORDS")
+
+	return &Completion{
+		Words: strings.Split(words, " "),
+		Line: line,
+		Point: point,
+	}
+}
+
+func (c *Completion) GetArgs() []string {
+	return []string{}
+}

cli/context.go

@@ -23,6 +23,7 @@ type Context struct {
 	flags *FlagSet
 	unknownFlags *FlagSet
 	command *Command
+	completion *Completion
 }
 
 func NewCommandContext() (*Context){
@@ -40,6 +41,10 @@ func (ctx *Context) Command() *Command {
 	return ctx.command
 }
 
+func (ctx *Context) Completion() *Completion {
+	return ctx.completion
+}
+
 func (ctx *Context) Flags() *FlagSet {
 	return ctx.flags
 }

main/main.go

@@ -60,6 +60,9 @@ func main() {
 		Help: func(ctx *cli.Context, args []string) error {
 			return processHelp(ctx, args)
 		},
+		AutoComplete: func(ctx *cli.Context) []string {
+			return processCompletion(ctx)
+		},
 	}
 
 	fs := rootCmd.Flags()
@@ -112,6 +115,11 @@ func processMain(ctx *cli.Context, args []string) error  {
 	}
 }
 
+func processCompletion(ctx *cli.Context) []string {
+	//openapi.
+	return make([]string, 0)
+}
+
 func processHelp(ctx *cli.Context, args []string) error {
 	c := ctx.Command()
 	//if err != nil {

oss/lib/cli_bridge.go

@@ -16,9 +16,6 @@ func NewOssCommand() *cli.Command {
 		Usage: "aliyun oss [command] [args...] [options...]",
 		Hidden: false,
 		Short: i18n.T("Object Storage Service", "阿里云OSS对象存储"),
-		//Run: func(ctx *cli.Context, args []string) error {
-		//	return nil
-		//},
 	}
 
 	result.AddSubCommand(NewCommandBridge(&configCommand))