Add cd and pwd commands to change the working dir

Closes #451

cmd/micro/buffer.go

@@ -81,12 +81,6 @@ func NewBuffer(txt []byte, path string) *Buffer {
 
 	b.Path = path
 	b.AbsPath = absPath
-	b.Name = path
-
-	// If the file doesn't have a path to disk then we give it no name
-	if path == "" {
-		b.Name = "No name"
-	}
 
 	// The last time this file was modified
 	b.ModTime, _ = GetModTime(b.Path)
@@ -270,7 +264,6 @@ func (b *Buffer) Serialize() error {
 func (b *Buffer) SaveAs(filename string) error {
 	b.FindFileType()
 	b.UpdateRules()
-	b.Name = filename
 	b.Path = filename
 	str := b.String()
 	if b.Settings["eofnewline"].(bool) {
@@ -295,7 +288,6 @@ func (b *Buffer) SaveAs(filename string) error {
 func (b *Buffer) SaveAsWithSudo(filename string) error {
 	b.FindFileType()
 	b.UpdateRules()
-	b.Name = filename
 	b.Path = filename
 
 	// The user may have already used sudo in which case we won't need the password

cmd/micro/command.go

@@ -8,6 +8,7 @@ import (
 	"os"
 	"os/exec"
 	"os/signal"
+	"path/filepath"
 	"regexp"
 	"strings"
 
@@ -46,6 +47,8 @@ func init() {
 		"ToggleLog": ToggleLog,
 		"Plugin":    PluginCmd,
 		"Reload":    Reload,
+		"Cd":        Cd,
+		"Pwd":       Pwd,
 	}
 }
 
@@ -95,6 +98,8 @@ func DefaultCommands() map[string]StrCommand {
 		"log":      {"ToggleLog", []Completion{NoCompletion}},
 		"plugin":   {"Plugin", []Completion{PluginCmdCompletion, PluginNameCompletion}},
 		"reload":   {"Reload", []Completion{NoCompletion}},
+		"cd":       {"Cd", []Completion{FileCompletion}},
+		"pwd":      {"Pwd", []Completion{NoCompletion}},
 	}
 }
 
@@ -183,6 +188,32 @@ func PluginCmd(args []string) {
 	}
 }
 
+func Cd(args []string) {
+	if len(args) > 0 {
+		home, _ := homedir.Dir()
+		path := strings.Replace(args[0], "~", home, 1)
+		os.Chdir(path)
+		for _, tab := range tabs {
+			for _, view := range tab.views {
+				wd, _ := os.Getwd()
+				view.Buf.Path, _ = MakeRelative(view.Buf.AbsPath, wd)
+				if p, _ := filepath.Abs(view.Buf.Path); !strings.Contains(p, wd) {
+					view.Buf.Path = view.Buf.AbsPath
+				}
+			}
+		}
+	}
+}
+
+func Pwd(args []string) {
+	wd, err := os.Getwd()
+	if err != nil {
+		messenger.Message(err.Error())
+	} else {
+		messenger.Message(wd)
+	}
+}
+
 func ToggleLog(args []string) {
 	buffer := messenger.getBuffer()
 	if CurView().Type != vtLog {

cmd/micro/statusline.go

@@ -18,6 +18,9 @@ func (sline *Statusline) Display() {
 	y := sline.view.height + sline.view.y
 
 	file := sline.view.Buf.Name
+	if file == "" {
+		file = sline.view.Buf.Path
+	}
 
 	// If the buffer is dirty (has been modified) write a little '+'
 	if sline.view.Buf.IsModified {

cmd/micro/util.go

@@ -91,6 +91,18 @@ func Insert(str string, pos int, value string) string {
 	return string([]rune(str)[:pos]) + value + string([]rune(str)[pos:])
 }
 
+// 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
+}
+
 // GetLeadingWhitespace returns the leading whitespace of the given string
 func GetLeadingWhitespace(str string) string {
 	ws := ""

runtime/help/commands.md

@@ -64,6 +64,10 @@ Here are the possible commands that you can use.
 
 * `reload`: reloads all runtime files.
 
+* `cd path`: Change the working directory to the given `path`.
+
+* `pwd`: Print the current working directory.
+
 ---
 
 The following commands are provided by the default plugins: