Initial Commit

2026-09-16 05:36:10 +00:00 · 2025-06-03 16:59:39 +03:00
commit 6b5e6e8996
12 changed files with 602 additions and 0 deletions
@@ -0,0 +1,87 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+type Buffer struct {
+	Id       int
+	Name     string
+	Contents string
+	LoadFunc func(buffer *Buffer) error
+	SaveFunc func(buffer *Buffer) error
+}
+
+var Buffers = make(map[int]*Buffer)
+var LastBufferId int
+
+func CreateFileBuffer(filename string) (*Buffer, error) {
+	// Replace tilde with home directory
+	if filename != "~" && strings.HasPrefix(filename, "~/") {
+		homedir, err := os.UserHomeDir()
+
+		if err != nil {
+			return nil, err
+		}
+
+		filename = filepath.Join(homedir, filename[2:])
+	}
+
+	stat, err := os.Stat(filename)
+	if err != nil {
+		return nil, err
+	}
+
+	if !stat.Mode().IsRegular() {
+		return nil, fmt.Errorf("%s is not a regular file", filename)
+	}
+
+	buffer := Buffer{
+		Id:       LastBufferId + 1,
+		Name:     filename,
+		Contents: "",
+		LoadFunc: func(buffer *Buffer) error {
+			content, err := os.ReadFile(filename)
+			if err != nil {
+				return err
+			}
+
+			buffer.Contents = string(content)
+			return nil
+		},
+		SaveFunc: func(buffer *Buffer) error {
+			err := os.WriteFile(filename, []byte(buffer.Contents), 0644)
+			if err != nil {
+				return err
+			}
+
+			return nil
+		},
+	}
+
+	err = buffer.LoadFunc(&buffer)
+	if err != nil {
+		return nil, err
+	}
+
+	Buffers[buffer.Id] = &buffer
+
+	return &buffer, nil
+}
+
+func CreateBuffer(bufferName string) *Buffer {
+	buffer := Buffer{
+		Id:       LastBufferId + 1,
+		Name:     bufferName,
+		Contents: "\n",
+		LoadFunc: func(buffer *Buffer) error { return nil },
+		SaveFunc: func(buffer *Buffer) error { return nil },
+	}
+
+	Buffers[buffer.Id] = &buffer
+
+	return &buffer
+}
@@ -0,0 +1,13 @@
+module Typer
+
+go 1.24
+
+require (
+	github.com/gdamore/encoding v1.0.1 // indirect
+	github.com/gdamore/tcell v1.4.0 // indirect
+	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
+	github.com/mattn/go-runewidth v0.0.16 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	golang.org/x/sys v0.33.0 // indirect
+	golang.org/x/text v0.25.0 // indirect
+)
@@ -0,0 +1,59 @@
+github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=
+github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
+github.com/gdamore/encoding v1.0.1 h1:YzKZckdBL6jVt2Gc+5p82qhrGiqMdG/eNs6Wy0u3Uhw=
+github.com/gdamore/encoding v1.0.1/go.mod h1:0Z0cMFinngz9kS1QfMjCP8TY7em3bZYeeklsSDPivEo=
+github.com/gdamore/tcell v1.4.0 h1:vUnHwJRvcPQa3tzi+0QI4U9JINXYJlOz9yiaiPQ2wMU=
+github.com/gdamore/tcell v1.4.0/go.mod h1:vxEiSDZdW3L+Uhjii9c3375IlDmR05bzxY404ZVSMo0=
+github.com/lucasb-eyer/go-colorful v1.0.3 h1:QIbQXiugsb+q10B+MI+7DI1oQLdmnep86tWFlaaUAac=
+github.com/lucasb-eyer/go-colorful v1.0.3/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
+github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
+github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
+github.com/mattn/go-runewidth v0.0.7 h1:Ei8KR0497xHyKJPAv59M1dkC+rOZCMBJ+t3fZ+twI54=
+github.com/mattn/go-runewidth v0.0.7/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
+github.com/mattn/go-runewidth v0.0.16 h1:E5ScNMtiwvlvB5paMFdw9p4kSQzbXFikJ5SQO6TULQc=
+github.com/mattn/go-runewidth v0.0.16/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
+github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190626150813-e07cf5db2756 h1:9nuHUbU8dRnRRfj9KjWUVrJeoexdbeMjttk6Oh1rD10=
+golang.org/x/sys v0.0.0-20190626150813-e07cf5db2756/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f h1:v4INt8xihDGvnrfjMDVXGxw9wrfxYyCjk0KbXjhR55s=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw=
+golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.3.8 h1:nAL+RVCQ9uMn3vJZbV+MRnydTJFPf8qqY42YiA6MrqY=
+golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.25.0 h1:qVyWApTSYLk/drJRO5mDlNYskwQznZmkpV2c8q9zls4=
+golang.org/x/text v0.25.0/go.mod h1:WEdwpYrmk1qmdHvhkSTNPm3app7v4rsT8F2UD6+VHIA=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -0,0 +1,26 @@
+package main
+
+import (
+	"github.com/gdamore/tcell"
+	"strconv"
+	"strings"
+)
+
+func drawLineIndex(window *Window) {
+	screen := window.screen
+	buffer := window.textArea.CurrentBuffer
+
+	lineIndexStyle := tcell.StyleDefault.Foreground(tcell.ColorDimGray).Background(tcell.Color236)
+
+	_, sizeY := screen.Size()
+
+	y := 0
+	if window.ShowTopMenu {
+		y = 1
+	}
+
+	for lineIndex := 1; lineIndex <= strings.Count(buffer.Contents, "\n") && lineIndex < sizeY; lineIndex++ {
+		drawText(screen, 0, y, 3, y, lineIndexStyle, strconv.Itoa(lineIndex)+". ")
+		y++
+	}
+}
@@ -0,0 +1,16 @@
+package main
+
+import (
+	"log"
+)
+
+func main() {
+	window, err := CreateWindow(nil)
+	if err != nil {
+		log.Fatalf("Failed to create window: %v", err)
+	}
+
+	for window.screen != nil {
+		window.Draw()
+	}
+}
@@ -0,0 +1,53 @@
+package main
+
+import (
+	"github.com/gdamore/tcell"
+	"time"
+)
+
+type TyperMessage struct {
+	timestamp int64
+	message   string
+}
+
+var messageLog = make([]TyperMessage, 0)
+
+func PrintMessage(window *Window, message string) {
+	messageLog = append(messageLog, TyperMessage{timestamp: time.Now().UnixMilli(), message: message})
+
+	err := window.screen.PostEvent(tcell.NewEventInterrupt(nil))
+	if err != nil {
+		return
+	}
+
+	go func() {
+		time.Sleep(5 * time.Second)
+
+		err := window.screen.PostEvent(tcell.NewEventInterrupt(nil))
+		if err != nil {
+			return
+		}
+	}()
+}
+
+func drawMessageBar(window *Window) {
+	screen := window.screen
+
+	messageBarStyle := tcell.StyleDefault.Foreground(tcell.ColorBlack).Background(tcell.ColorWhite)
+
+	sizeX, sizeY := screen.Size()
+
+	messageToPrint := ""
+	if len(messageLog) > 0 && time.Since(time.UnixMilli(messageLog[len(messageLog)-1].timestamp)).Seconds() < 5 {
+		messageToPrint = messageLog[len(messageLog)-1].message
+	}
+
+	for x := 0; x < sizeX; x++ {
+		char := ' '
+		if x < len(messageToPrint) {
+			char = int32(messageToPrint[x])
+		}
+
+		screen.SetContent(x, sizeY-1, char, nil, messageBarStyle)
+	}
+}
@@ -0,0 +1,46 @@
+package main
+
+import (
+	"github.com/gdamore/tcell"
+)
+
+type TopMenuButton struct {
+	Name string
+}
+
+var TopMenuButtons = make([]TopMenuButton, 0)
+
+func initTopMenu() {
+	// Buttons
+	fileButton := TopMenuButton{
+		Name: "File",
+	}
+	EditButton := TopMenuButton{
+		Name: "Edit",
+	}
+	Buffers := TopMenuButton{
+		Name: "Buffers",
+	}
+
+	// Append buttons
+	TopMenuButtons = append(TopMenuButtons, fileButton, EditButton, Buffers)
+}
+
+func drawTopMenu(window *Window) {
+	screen := window.screen
+
+	topMenuStyle := tcell.StyleDefault.Foreground(tcell.ColorBlack).Background(tcell.ColorWhite)
+
+	sizeX, _ := screen.Size()
+
+	for x := 0; x < sizeX; x++ {
+		screen.SetContent(x, 0, ' ', nil, topMenuStyle)
+	}
+
+	currentX := 1
+	for _, button := range TopMenuButtons {
+		drawText(screen, currentX, 0, currentX+len(button.Name), 0, topMenuStyle, button.Name)
+		currentX += len(button.Name) + 1
+	}
+
+}
@@ -0,0 +1,19 @@
+package main
+
+import "github.com/gdamore/tcell"
+
+func drawText(s tcell.Screen, x1, y1, x2, y2 int, style tcell.Style, text string) {
+	row := y1
+	col := x1
+	for _, r := range []rune(text) {
+		s.SetContent(col, row, r, nil, style)
+		col++
+		if col >= x2 {
+			row++
+			col = x1
+		}
+		if row > y2 {
+			break
+		}
+	}
+}
@@ -0,0 +1,232 @@
+package main
+
+import (
+	"github.com/gdamore/tcell"
+	"log"
+)
+
+type Window struct {
+	ShowTopMenu   bool
+	ShowLineIndex bool
+
+	textArea TextArea
+
+	screen tcell.Screen
+}
+
+type TextArea struct {
+	CursorPos     int
+	CurrentBuffer *Buffer
+}
+
+func CreateWindow(initialBuffer *Buffer) (*Window, error) {
+	window := Window{
+		ShowTopMenu:   true,
+		ShowLineIndex: true,
+
+		textArea: TextArea{
+			CursorPos:     0,
+			CurrentBuffer: initialBuffer,
+		},
+
+		screen: nil,
+	}
+
+	// Create empty buffer if nil
+	if window.textArea.CurrentBuffer == nil {
+		window.textArea.CurrentBuffer = CreateBuffer("New File")
+	}
+
+	// Create tcell screen
+	screen, err := tcell.NewScreen()
+	if err != nil {
+		log.Fatalf("Failed to initialize tcell: %s", err)
+	}
+
+	if err := screen.Init(); err != nil {
+		log.Fatalf("Failed to initialize screen: %s", err)
+	}
+
+	// Set screen style
+	screen.SetStyle(tcell.StyleDefault.Foreground(tcell.ColorWhite).Background(tcell.Color234))
+
+	// Set window screen field
+	window.screen = screen
+
+	// Initialize top menu
+	initTopMenu()
+
+	return &window, nil
+}
+
+func (window *Window) drawCurrentBuffer() {
+	buffer := window.textArea.CurrentBuffer
+
+	x, y := 0, 0
+	if window.ShowTopMenu {
+		y++
+	}
+	if window.ShowLineIndex {
+		x += 3
+	}
+
+	width, _ := window.screen.Size()
+
+	for _, r := range []rune(buffer.Contents) {
+		if x >= width || r == '\n' {
+			x = 0
+			if window.ShowLineIndex {
+				x += 3
+			}
+			y++
+		}
+
+		window.screen.SetContent(x, y, r, nil, tcell.StyleDefault.Foreground(tcell.ColorWhite).Background(tcell.Color234))
+
+		if r != '\n' {
+			x++
+		}
+	}
+}
+
+func (window *Window) Draw() {
+	// Clear screen
+	window.screen.Clear()
+
+	// Draw top menu
+	if window.ShowTopMenu {
+		drawTopMenu(window)
+	}
+
+	// Draw line index
+	if window.ShowLineIndex {
+		drawLineIndex(window)
+	}
+
+	// Draw current buffer
+	if window.textArea.CurrentBuffer != nil {
+		window.drawCurrentBuffer()
+	}
+
+	// Draw message bar
+	drawMessageBar(window)
+
+	// Draw cursor
+	window.screen.ShowCursor(window.GetAbsoluteCursorPos())
+
+	// Update screen
+	window.screen.Show()
+
+	// Poll event
+	ev := window.screen.PollEvent()
+
+	// Process event
+	switch ev := ev.(type) {
+	case *tcell.EventResize:
+		window.screen.Sync()
+	case *tcell.EventKey:
+		// Navigation Keys
+		if ev.Key() == tcell.KeyRight {
+			window.SetCursorPos(window.textArea.CursorPos + 1)
+		} else if ev.Key() == tcell.KeyLeft {
+			window.SetCursorPos(window.textArea.CursorPos - 1)
+		} else if ev.Key() == tcell.KeyUp {
+			x, y := window.GetCursorPos2D()
+			window.SetCursorPos2D(x, y-1)
+		} else if ev.Key() == tcell.KeyDown {
+			x, y := window.GetCursorPos2D()
+			window.SetCursorPos2D(x, y+1)
+		}
+
+		// Exit key
+		if ev.Key() == tcell.KeyCtrlC {
+			window.Close()
+		}
+	}
+}
+
+func (window *Window) Close() {
+	window.screen.Fini()
+	window.screen = nil
+}
+
+func (window *Window) GetTextAreaDimensions() (int, int, int, int) {
+	x1, y1 := 0, 0
+	x2, y2 := window.screen.Size()
+
+	if window.ShowTopMenu {
+		y1++
+	}
+
+	if window.ShowLineIndex {
+		x1 += 3
+	}
+
+	return x1, y1, x2, y2
+}
+
+func (window *Window) GetAbsoluteCursorPos() (int, int) {
+	cursorX, cursorY := window.GetCursorPos2D()
+
+	x1, y1, _, _ := window.GetTextAreaDimensions()
+	cursorX += x1
+	cursorY += y1
+
+	return cursorX, cursorY
+}
+
+func (window *Window) GetCursorPos2D() (int, int) {
+	cursorX := 0
+	cursorY := 0
+
+	for i := 0; i < window.textArea.CursorPos; i++ {
+		char := window.textArea.CurrentBuffer.Contents[i]
+		if char == '\n' {
+			cursorY++
+			cursorX = 0
+		} else {
+			cursorX++
+		}
+	}
+
+	return cursorX, cursorY
+}
+
+func (window *Window) SetCursorPos(position int) {
+	window.textArea.CursorPos = position
+
+	if window.textArea.CursorPos < 0 {
+		window.textArea.CursorPos = 0
+	}
+
+	if window.textArea.CursorPos > len(window.textArea.CurrentBuffer.Contents)-1 {
+		window.textArea.CursorPos = len(window.textArea.CurrentBuffer.Contents) - 1
+	}
+}
+
+func (window *Window) SetCursorPos2D(x, y int) {
+	x = max(x, 0)
+	y = max(y, 0)
+
+	lines := make([]struct {
+		charIndex int
+		str       string
+	}, 0)
+
+	var str string
+	for i, char := range window.textArea.CurrentBuffer.Contents {
+		str += string(char)
+		if char == '\n' {
+			lines = append(lines, struct {
+				charIndex int
+				str       string
+			}{charIndex: i - len(str) + 1, str: str})
+			str = ""
+		}
+	}
+
+	y = min(y, len(lines)-1)
+	x = min(x, len(lines[y].str)-1)
+
+	window.SetCursorPos(lines[y].charIndex + x)
+}