Add some commands

cmd/micro/action/bufhandler.go

@@ -53,7 +53,7 @@ func BufMapMouse(k MouseEvent, action string) {
 // The ActionHandler can access the window for necessary info about
 // visual positions for mouse clicks and scrolling
 type BufHandler struct {
-	display.Window
+	display.BWindow
 
 	Buf *buffer.Buffer
 
@@ -98,10 +98,10 @@ type BufHandler struct {
 	splitID uint64
 }
 
-func NewBufHandler(buf *buffer.Buffer, win display.Window) *BufHandler {
+func NewBufHandler(buf *buffer.Buffer, win display.BWindow) *BufHandler {
 	h := new(BufHandler)
 	h.Buf = buf
-	h.Window = win
+	h.BWindow = win
 
 	h.Cursor = h.Buf.GetActiveCursor()
 	h.mouseReleased = true
@@ -109,6 +109,23 @@ func NewBufHandler(buf *buffer.Buffer, win display.Window) *BufHandler {
 	return h
 }
 
+func (h *BufHandler) OpenBuffer(b *buffer.Buffer) {
+	h.Buf.Close()
+	h.Buf = b
+	h.BWindow.SetBuffer(b)
+	h.Cursor = b.GetActiveCursor()
+	v := new(display.View)
+	h.SetView(v)
+	h.Relocate()
+	// Set mouseReleased to true because we assume the mouse is not being pressed when
+	// the editor is opened
+	h.mouseReleased = true
+	// Set isOverwriteMode to false, because we assume we are in the default mode when editor
+	// is opened
+	h.isOverwriteMode = false
+	h.lastClickTime = time.Time{}
+}
+
 func (h *BufHandler) ID() uint64 {
 	return h.splitID
 }

cmd/micro/action/command.go

@@ -2,6 +2,9 @@ package action
 
 import (
 	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
 
 	"github.com/zyedidia/micro/cmd/micro/buffer"
 	"github.com/zyedidia/micro/cmd/micro/config"
@@ -152,10 +155,55 @@ func (h *BufHandler) RawCmd(args []string) {
 
 // TabSwitchCmd switches to a given tab either by name or by number
 func (h *BufHandler) TabSwitchCmd(args []string) {
+	if len(args) > 0 {
+		num, err := strconv.Atoi(args[0])
+		if err != nil {
+			// Check for tab with this name
+
+			found := false
+			for i, t := range Tabs.List {
+				if t.Panes[t.active].Name() == args[0] {
+					Tabs.SetActive(i)
+					found = true
+				}
+			}
+			if !found {
+				InfoBar.Error("Could not find tab: ", err)
+			}
+		} else {
+			num--
+			if num >= 0 && num < len(Tabs.List) {
+				Tabs.SetActive(num)
+			} else {
+				InfoBar.Error("Invalid tab index")
+			}
+		}
+	}
 }
 
 // CdCmd changes the current working directory
 func (h *BufHandler) CdCmd(args []string) {
+	if len(args) > 0 {
+		path, err := util.ReplaceHome(args[0])
+		if err != nil {
+			InfoBar.Error(err)
+			return
+		}
+		err = os.Chdir(path)
+		if err != nil {
+			InfoBar.Error(err)
+			return
+		}
+		wd, _ := os.Getwd()
+		for _, b := range buffer.OpenBuffers {
+			if len(b.Path) > 0 {
+				b.Path, _ = util.MakeRelative(b.AbsPath, wd)
+				if p, _ := filepath.Abs(b.Path); !strings.Contains(p, wd) {
+					b.Path = b.AbsPath
+				}
+			}
+		}
+	}
 }
 
 // MemUsageCmd prints micro's memory usage
@@ -181,6 +229,39 @@ func (h *BufHandler) PwdCmd(args []string) {
 
 // OpenCmd opens a new buffer with a given filename
 func (h *BufHandler) OpenCmd(args []string) {
+	if len(args) > 0 {
+		filename := args[0]
+		// the filename might or might not be quoted, so unquote first then join the strings.
+		args, err := shellwords.Split(filename)
+		if err != nil {
+			InfoBar.Error("Error parsing args ", err)
+			return
+		}
+		filename = strings.Join(args, " ")
+
+		open := func() {
+			b, err := buffer.NewBufferFromFile(filename, buffer.BTDefault)
+			if err != nil {
+				InfoBar.Error(err)
+				return
+			}
+			h.OpenBuffer(b)
+		}
+		if h.Buf.Modified() {
+			InfoBar.YNPrompt("Save changes to "+h.Buf.GetName()+" before closing? (y,n,esc)", func(yes, canceled bool) {
+				if !canceled && !yes {
+					open()
+				} else if !canceled && yes {
+					h.Save()
+					open()
+				}
+			})
+		} else {
+			open()
+		}
+	} else {
+		InfoBar.Error("No filename")
+	}
 }
 
 // ToggleLogCmd toggles the log view
@@ -341,6 +422,24 @@ func (h *BufHandler) SetLocalCmd(args []string) {
 
 // ShowCmd shows the value of the given option
 func (h *BufHandler) ShowCmd(args []string) {
+	if len(args) < 1 {
+		InfoBar.Error("Please provide an option to show")
+		return
+	}
+
+	var option interface{}
+	if opt, ok := h.Buf.Settings[args[0]]; ok {
+		option = opt
+	} else if opt, ok := config.GlobalSettings[args[0]]; ok {
+		option = opt
+	}
+
+	if option == nil {
+		InfoBar.Error(args[0], " is not a valid option")
+		return
+	}
+
+	InfoBar.Message(option)
 }
 
 // ShowKeyCmd displays the action that a key is bound to
@@ -376,10 +475,12 @@ func (h *BufHandler) RunCmd(args []string) {
 
 // QuitCmd closes the main view
 func (h *BufHandler) QuitCmd(args []string) {
+	h.Quit()
 }
 
 // SaveCmd saves the buffer in the main view
 func (h *BufHandler) SaveCmd(args []string) {
+	h.Save()
 }
 
 // ReplaceCmd runs search and replace

cmd/micro/action/infohandler.go

@@ -15,7 +15,7 @@ type InfoHandler struct {
 	*info.InfoBuf
 }
 
-func NewInfoHandler(ib *info.InfoBuf, w display.Window) *InfoHandler {
+func NewInfoHandler(ib *info.InfoBuf, w display.BWindow) *InfoHandler {
 	ih := new(InfoHandler)
 	ih.InfoBuf = ib
 	ih.BufHandler = NewBufHandler(ib.Buffer, w)

cmd/micro/action/pane.go

@@ -15,12 +15,12 @@ type Pane interface {
 }
 
 type EditPane struct {
-	display.Window
+	display.BWindow
 	*BufHandler
 }
 
 type InfoPane struct {
-	display.Window
+	display.BWindow
 	*InfoHandler
 	*info.InfoBuf
 }
@@ -29,7 +29,7 @@ func NewBufEditPane(x, y, width, height int, b *buffer.Buffer) *EditPane {
 	e := new(EditPane)
 	// TODO: can probably replace editpane with bufhandler entirely
 	w := display.NewBufWindow(x, y, width, height, b)
-	e.Window = w
+	e.BWindow = w
 	e.BufHandler = NewBufHandler(b, w)
 
 	return e
@@ -39,7 +39,7 @@ func NewInfoBar() *InfoPane {
 	e := new(InfoPane)
 	ib := info.NewBuffer()
 	w := display.NewInfoWindow(ib)
-	e.Window = w
+	e.BWindow = w
 	e.InfoHandler = NewInfoHandler(ib, w)
 	e.InfoBuf = ib
 

cmd/micro/buffer/buffer.go

@@ -133,6 +133,7 @@ func NewBuffer(reader io.Reader, size int64, path string, cursorPosition []strin
 	config.InitLocalSettings(b.Settings, b.Path)
 
 	found := false
+	if len(path) > 0 {
 		for _, buf := range OpenBuffers {
 			if buf.AbsPath == absPath {
 				found = true
@@ -142,6 +143,7 @@ func NewBuffer(reader io.Reader, size int64, path string, cursorPosition []strin
 				b.isModified = buf.isModified
 			}
 		}
+	}
 
 	if !found {
 		b.LineArray = NewLineArray(uint64(size), FFAuto, reader)

cmd/micro/display/bufwindow.go

@@ -41,6 +41,10 @@ func NewBufWindow(x, y, width, height int, buf *buffer.Buffer) *BufWindow {
 	return w
 }
 
+func (w *BufWindow) SetBuffer(b *buffer.Buffer) {
+	w.Buf = b
+}
+
 func (v *View) GetView() *View {
 	return v
 }

cmd/micro/display/infowindow.go

@@ -53,6 +53,10 @@ func (i *InfoWindow) Resize(w, h int) {
 	i.y = h
 }
 
+func (i *InfoWindow) SetBuffer(b *buffer.Buffer) {
+	i.InfoBuf.Buffer = b
+}
+
 // func (i *InfoWindow) YesNoPrompt() (bool, bool) {
 // 	for {
 // 		i.Clear()

cmd/micro/display/window.go

@@ -24,3 +24,8 @@ type Window interface {
 	Resize(w, h int)
 	SetActive(b bool)
 }
+
+type BWindow interface {
+	Window
+	SetBuffer(b *buffer.Buffer)
+}

cmd/micro/util/util.go

@@ -195,6 +195,18 @@ func RunePos(b []byte, i int) int {
 	return utf8.RuneCount(b[:i])
 }
 
+// MakeRelative will attempt to make a relative path between path and base
+func MakeRelative(path, base string) (string, error) {
+	if len(path) > 0 {
+		rel, err := filepath.Rel(base, path)
+		if err != nil {
+			return path, err
+		}
+		return rel, nil
+	}
+	return path, nil
+}
+
 // TODO: consider changing because of snap segfault
 // ReplaceHome takes a path as input and replaces ~ at the start of the path with the user's
 // home directory. Does nothing if the path does not start with '~'.