Merge pull request #5 from atakanyenel/sleep

add sleep command

.gitignore

@@ -22,3 +22,4 @@ _testmain.go
 *.exe
 *.test
 *.prof
+gosh

README.md

@@ -11,7 +11,8 @@ files that implement command plugins.
 #### Pre-requisites
 
 * Go 1.8 or above
-* Linux (for now)
+* Linux
+* Mac OSX
 
 Gosh makes it easy to create shell programs.  First, download or clone this 
 repository.  For a quick start, run the following:

gosh_test.go

@@ -9,12 +9,12 @@ import (
 )
 
 var (
-	testPluginsDir = "../plugins"
+	testPluginsDir = "./plugins"
 )
 
 func TestShellNew(t *testing.T) {
 	shell := New()
-	if shell.pluginsDir != pluginsDir {
+	if shell.pluginsDir != testPluginsDir {
 		t.Error("pluginsDir not set")
 	}
 }
@@ -49,10 +49,10 @@ func TestShellHandle(t *testing.T) {
 
 	helloOut := bytes.NewBufferString("")
 	shell.ctx = context.WithValue(context.TODO(), "gosh.stdout", helloOut)
-	if err := shell.handle("testhello"); err == nil {
+	if _, err := shell.handle(shell.ctx, "testhello"); err == nil {
 		t.Error("this test should have failed with command not found")
 	}
-	if err := shell.handle("hello"); err != nil {
+	if _, err := shell.handle(shell.ctx, "hello"); err != nil {
 		t.Error(err)
 	}
 	printedOut := strings.TrimSpace(helloOut.String())
@@ -62,7 +62,7 @@ func TestShellHandle(t *testing.T) {
 
 	byeOut := bytes.NewBufferString("")
 	shell.ctx = context.WithValue(context.TODO(), "gosh.stdout", byeOut)
-	if err := shell.handle("goodbye"); err != nil {
+	if _, err := shell.handle(shell.ctx, "goodbye"); err != nil {
 		t.Error(err)
 	}
 	printedOut = strings.TrimSpace(byeOut.String())

plugins/sleepcmd.go

@@ -0,0 +1,51 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"github.com/vladimirvivien/gosh/api"
+	"io"
+	"strconv"
+	"time"
+)
+
+type sleepCmd string
+
+func (s sleepCmd) Name() string {
+	return string(s)
+}
+func (s sleepCmd) Usage() string     { return "Usage: sleep <duration>" }
+func (s sleepCmd) ShortDesc() string { return "sleeps for <duration> seconds" }
+
+func (s sleepCmd) LongDesc() string { return s.ShortDesc() }
+
+func (s sleepCmd) Exec(ctx context.Context, args []string) (context.Context, error) {
+	if len(args) == 2 {
+		duration, err := strconv.Atoi(args[1])
+		if err != nil {
+			return ctx, err
+		}
+		time.Sleep(time.Duration(duration) * time.Second)
+		return ctx, nil
+	}
+	out := ctx.Value("gosh.stdout").(io.Writer)
+	fmt.Fprintln(out, s.Usage())
+	return ctx, nil
+
+}
+
+type sleepCmds struct{}
+
+func (s *sleepCmds) Init(ctx context.Context) error {
+	out := ctx.Value("gosh.stdout").(io.Writer)
+	fmt.Fprintln(out, "sleep module loaded")
+	return nil
+}
+
+func (s *sleepCmds) Registry() map[string]api.Command {
+	return map[string]api.Command{
+		"sleep": sleepCmd("sleep"),
+	}
+}
+
+var Commands sleepCmds