Interface with plugin.lua file

cmd/micro/bindings.go

@@ -11,6 +11,7 @@ import (
 	"time"
 
 	"github.com/mitchellh/go-homedir"
+	"github.com/yuin/gopher-lua"
 	"github.com/zyedidia/clipboard"
 	"github.com/zyedidia/tcell"
 )
@@ -619,6 +620,14 @@ func (v *View) Save() bool {
 			v.GoSave()
 		}
 	}
+	if err := L.CallByParam(lua.P{
+		Fn:      L.GetGlobal("onSave"),
+		NRet:    1,
+		Protect: true,
+	}); err != nil {
+		// The function isn't defined by this plugin
+		return true
+	}
 	return true
 }
 
@@ -633,7 +642,7 @@ func (v *View) GoSave() {
 		} else {
 			messenger.Message("Saved " + v.buf.path)
 		}
-		v.reOpen()
+		v.ReOpen()
 	} else if settings["gofmt"] == true {
 		messenger.Message("Running gofmt...")
 		err := gofmt(v.buf.path)
@@ -642,7 +651,7 @@ func (v *View) GoSave() {
 		} else {
 			messenger.Message("Saved " + v.buf.path)
 		}
-		v.reOpen()
+		v.ReOpen()
 		return
 	}
 

cmd/micro/micro.go

@@ -7,8 +7,10 @@ import (
 	"os"
 
 	"github.com/go-errors/errors"
+	"github.com/layeh/gopher-luar"
 	"github.com/mattn/go-isatty"
 	"github.com/mitchellh/go-homedir"
+	"github.com/yuin/gopher-lua"
 	"github.com/zyedidia/tcell"
 	"github.com/zyedidia/tcell/encoding"
 )
@@ -41,6 +43,9 @@ var (
 
 	// Is the help screen open
 	helpOpen = false
+
+	// L is the lua state
+	L *lua.LState
 )
 
 // LoadInput loads the file input for the editor
@@ -175,6 +180,13 @@ func main() {
 		os.Exit(1)
 	}
 
+	L = lua.NewState()
+	defer L.Close()
+
+	if err := L.DoFile("plugin.lua"); err != nil {
+		panic(err)
+	}
+
 	encoding.Register()
 	tcell.SetEncodingFallback(tcell.EncodingFallbackASCII)
 
@@ -207,6 +219,10 @@ func main() {
 	messenger = new(Messenger)
 	view := NewView(buf)
 
+	L.SetGlobal("view", luar.New(L, view))
+	L.SetGlobal("settings", luar.New(L, &settings))
+	L.SetGlobal("messenger", luar.New(L, messenger))
+
 	for {
 		// Display everything
 		Redraw(view)

cmd/micro/plugin.lua

@@ -0,0 +1,8 @@
+function onSave()
+    local handle = io.popen("goimports -w view.go")
+    local result = handle:read("*a")
+    handle:close()
+
+    view:ReOpen()
+    messenger:Message(result)
+end

cmd/micro/view.go

@@ -172,8 +172,8 @@ func (v *View) OpenBuffer(buf *Buffer) {
 	v.lastClickTime = time.Time{}
 }
 
-// Close and Re-open the current file.
+// ReOpen reloads the current buffer
-func (v *View) reOpen() {
+func (v *View) ReOpen() {
 	if v.CanClose("Continue? (yes, no, save) ") {
 		file, err := ioutil.ReadFile(v.buf.path)
 		filename := v.buf.name