Some plugin callbacks

internal/action/bufpane.go

@@ -4,8 +4,12 @@ import (
 	"strings"
 	"time"
 
+	luar "layeh.com/gopher-luar"
+
 	"github.com/zyedidia/micro/internal/buffer"
+	"github.com/zyedidia/micro/internal/config"
 	"github.com/zyedidia/micro/internal/display"
+	ulua "github.com/zyedidia/micro/internal/lua"
 	"github.com/zyedidia/micro/internal/screen"
 	"github.com/zyedidia/tcell"
 )
@@ -110,6 +114,8 @@ func NewBufPane(buf *buffer.Buffer, win display.BWindow) *BufPane {
 	h.Cursor = h.Buf.GetActiveCursor()
 	h.mouseReleased = true
 
+	config.RunPluginFn("onBufPaneOpen", luar.New(ulua.L, h))
+
 	return h
 }
 

internal/action/globals.go

@@ -5,3 +5,7 @@ var InfoBar *InfoPane
 func InitGlobals() {
 	InfoBar = NewInfoBar()
 }
+
+func GetInfoBar() *InfoPane {
+	return InfoBar
+}

internal/buffer/buffer.go

@@ -12,10 +12,13 @@ import (
 	"time"
 	"unicode/utf8"
 
+	luar "layeh.com/gopher-luar"
+
 	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/pkg/highlight"
+	ulua "github.com/zyedidia/micro/internal/lua"
 	"github.com/zyedidia/micro/internal/screen"
 	. "github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/micro/pkg/highlight"
 	"golang.org/x/text/encoding/htmlindex"
 	"golang.org/x/text/encoding/unicode"
 	"golang.org/x/text/transform"
@@ -228,6 +231,11 @@ func NewBuffer(r io.Reader, size int64, path string, cursorPosition []string, bt
 		}
 	}
 
+	err = config.RunPluginFn("onBufferOpen", luar.New(ulua.L, b))
+	if err != nil {
+		screen.TermMessage(err)
+	}
+
 	OpenBuffers = append(OpenBuffers, b)
 
 	return b

internal/config/plugin.go

@@ -2,6 +2,7 @@ package config
 
 import (
 	"errors"
+	"log"
 
 	lua "github.com/yuin/gopher-lua"
 	ulua "github.com/zyedidia/micro/internal/lua"
@@ -9,12 +10,26 @@ import (
 
 var ErrNoSuchFunction = errors.New("No such function exists")
 
+// LoadAllPlugins loads all detected plugins (in runtime/plugins and ConfigDir/plugins)
 func LoadAllPlugins() {
 	for _, p := range Plugins {
 		p.Load()
 	}
 }
 
+// RunPluginFn runs a given function in all plugins
+func RunPluginFn(fn string, args ...lua.LValue) error {
+	var reterr error
+	for _, p := range Plugins {
+		log.Println(p.Name, fn)
+		_, err := p.Call(fn, args...)
+		if err != nil && err != ErrNoSuchFunction {
+			reterr = errors.New("Plugin " + p.Name + ": " + err.Error())
+		}
+	}
+	return reterr
+}
+
 type Plugin struct {
 	Name string        // name of plugin
 	Info RuntimeFile   // json file containing info

internal/config/rtfiles.go

@@ -2,6 +2,7 @@ package config
 
 import (
 	"io/ioutil"
+	"log"
 	"os"
 	"path"
 	"path/filepath"
@@ -137,6 +138,7 @@ func InitRuntimeFiles() {
 	// Search ConfigDir for plugin-scripts
 	plugdir := filepath.Join(ConfigDir, "plugins")
 	files, _ := ioutil.ReadDir(plugdir)
+	log.Println("reading", plugdir)
 	for _, d := range files {
 		if d.IsDir() {
 			srcs, _ := ioutil.ReadDir(filepath.Join(plugdir, d.Name()))

internal/lua/lua.go

@@ -23,11 +23,6 @@ import (
 
 var L *lua.LState
 
-func init() {
-	L = lua.NewState()
-	L.SetGlobal("import", luar.New(L, Import))
-}
-
 // LoadFile loads a lua file
 func LoadFile(module string, file string, data []byte) error {
 	pluginDef := []byte("module(\"" + module + "\", package.seeall)")