Replace termbox-go with tcell

Fix colour construction issue

This also has a test to mitigate it in the future

Remove `colormode` option

The original issue it was trying to solve is no longer present with
tcell (it being a holdover from `color256` on termbox) so it is not
needed.

retire gitter channel in favor of irc/matrix

Export options as environment variables (#448)

* Export options as environment variables

Any options from gOpts are available via lf_OPTION environment
variables. For now it works only on booleans, integers and strings (no
array support)

* Do not export some of the options

* Add support for arrays and fix numbers

* Fix comments

* Replace 1 and 0 with true and false

* Export hidden,reverse,dirfirst and sortby options

* Fix comments

* Little fix

* Simplify boolean conversion

log readlink errors instead of fail

Related #447 and #374

.travis.yml

@@ -1,9 +1,11 @@
 language: go
-install:
-  - go get github.com/doronbehar/termbox-go
-  - go get gopkg.in/djherbis/times.v1
+
+go:
+  - 1.15.x
+
 before_deploy:
   - gen/xbuild.sh
+
 deploy:
   provider: releases
   api_key:

README.md

@@ -8,7 +8,6 @@
 [![Build Status](https://travis-ci.org/gokcehan/lf.svg?branch=master)](https://travis-ci.org/gokcehan/lf)
 [![Go Report Card](https://goreportcard.com/badge/github.com/gokcehan/lf)](https://goreportcard.com/report/github.com/gokcehan/lf)
 [![GoDoc](https://godoc.org/github.com/gokcehan/lf?status.svg)](https://godoc.org/github.com/gokcehan/lf)
-[![Join the chat at https://gitter.im/lf-fm/Lobby](https://badges.gitter.im/lf-fm/Lobby.svg)](https://gitter.im/lf-fm/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
 > This is a work in progress. Use at your own risk.
 

app.go

@@ -9,9 +9,13 @@ import (
 	"os/exec"
 	"os/signal"
 	"path/filepath"
+	"reflect"
+	"strconv"
 	"strings"
 	"syscall"
 	"time"
+
+	"github.com/gdamore/tcell"
 )
 
 type cmdItem struct {
@@ -32,8 +36,8 @@ type app struct {
 	cmdHistoryInd int
 }
 
-func newApp() *app {
-	ui := newUI()
+func newApp(screen tcell.Screen) *app {
+	ui := newUI(screen)
 	nav := newNav(ui.wins[0].h)
 
 	quitChan := make(chan bool, 1)
@@ -333,6 +337,85 @@ func (app *app) exportFiles() {
 	exportFiles(currFile, currSelections)
 }
 
+func fieldToString(field reflect.Value) string {
+	kind := field.Kind()
+	var value string
+
+	switch kind {
+	case reflect.Int:
+		value = strconv.Itoa(int(field.Int()))
+	case reflect.Bool:
+		value = strconv.FormatBool(field.Bool())
+	case reflect.Slice:
+		for i := 0; i < field.Len(); i++ {
+			element := field.Index(i)
+
+			if i == 0 {
+				value = fieldToString(element)
+			} else {
+				value += ":" + fieldToString(element)
+			}
+		}
+	default:
+		value = field.String()
+	}
+
+	return value
+}
+
+func (app *app) exportOpts() {
+	e := reflect.ValueOf(&gOpts).Elem()
+
+	for i := 0; i < e.NumField(); i++ {
+		// Get name and prefix it with lf_
+		name := e.Type().Field(i).Name
+		name = fmt.Sprintf("lf_%s", name)
+
+		// Skip maps
+		if name == "lf_keys" || name == "lf_cmdkeys" || name == "lf_cmds" {
+			continue
+		}
+
+		// Get string representation of the value
+		if name == "lf_sortType" {
+			var sortby string
+
+			switch gOpts.sortType.method {
+			case naturalSort:
+				sortby = "natural"
+			case nameSort:
+				sortby = "name"
+			case sizeSort:
+				sortby = "size"
+			case timeSort:
+				sortby = "time"
+			case ctimeSort:
+				sortby = "ctime"
+			case atimeSort:
+				sortby = "atime"
+			case extSort:
+				sortby = "ext"
+			}
+
+			os.Setenv("lf_sortby", sortby)
+
+			reverse := strconv.FormatBool(gOpts.sortType.option&reverseSort != 0)
+			os.Setenv("lf_reverse", reverse)
+
+			hidden := strconv.FormatBool(gOpts.sortType.option&hiddenSort != 0)
+			os.Setenv("lf_hidden", hidden)
+
+			dirfirst := strconv.FormatBool(gOpts.sortType.option&dirfirstSort != 0)
+			os.Setenv("lf_dirfirst", dirfirst)
+		} else {
+			field := e.Field(i)
+			value := fieldToString(field)
+
+			os.Setenv(name, value)
+		}
+	}
+}
+
 func waitKey() error {
 	cmd := pauseCommand()
 
@@ -356,6 +439,7 @@ func waitKey() error {
 //     &       No    Yes    No     No      No      Do nothing
 func (app *app) runShell(s string, args []string, prefix string) {
 	app.exportFiles()
+	app.exportOpts()
 
 	cmd := shellCommand(s, args)
 

client.go

@@ -10,16 +10,17 @@ import (
 	"strings"
 	"time"
 
-	"github.com/doronbehar/termbox-go"
+	"github.com/gdamore/tcell"
 )
 
 func run() {
-	if err := termbox.Init(); err != nil {
-		log.Fatalf("initializing termbox: %s", err)
+	var screen tcell.Screen
+	var err error
+	if screen, err = tcell.NewScreen(); err != nil {
+		log.Fatalf("creating screen: %s", err)
+	} else if err = screen.Init(); err != nil {
+		log.Fatalf("initializing screen: %s", err)
 	}
-	defer termbox.Close()
-
-	setColorMode()
 
 	f, err := os.Create(gLogPath)
 	if err != nil {
@@ -31,7 +32,7 @@ func run() {
 
 	log.Print("hi!")
 
-	app := newApp()
+	app := newApp(screen)
 
 	if err := app.nav.readMarks(); err != nil {
 		app.ui.echoerrf("reading marks file: %s", err)
@@ -42,6 +43,7 @@ func run() {
 	}
 
 	app.loop()
+	app.ui.screen.Fini()
 }
 
 func readExpr() <-chan expr {