108 lines
1.5 KiB
Go
108 lines
1.5 KiB
Go
package editor
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import (
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"os"
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"strings"
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"unicode/utf8"
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"tea.kareha.org/lab/termi"
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)
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type Mode int
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const (
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ModeCommand Mode = iota
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ModeInsert
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)
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type Editor struct {
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col, row int
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x, y int
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vrow int
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lines []string
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ins *Insert
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mode Mode
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path string
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bell bool
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}
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func (ed *Editor) Load() {
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if ed.path == "" {
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return
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}
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_, err := os.Stat(ed.path)
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if err != nil { // file not exists
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return
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}
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data, err := os.ReadFile(ed.path)
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if err != nil {
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panic(err)
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}
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if len(data) < 1 {
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ed.lines = make([]string, 1)
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}
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// TODO CRLF
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if data[len(data)-1] == '\n' {
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data = data[:len(data)-1]
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}
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ed.lines = strings.Split(string(data), "\n")
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}
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func Init(args []string) *Editor {
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var path string
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if len(args) > 1 {
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path = args[1]
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}
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ed := &Editor{
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col: 0,
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row: 0,
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x: 0,
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y: 0,
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vrow: 0,
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lines: make([]string, 1),
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ins: NewInsert(),
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mode: ModeCommand,
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path: path,
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bell: false,
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}
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ed.Load()
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termi.Raw()
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return ed
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}
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func (ed *Editor) Save() {
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if ed.path == "" {
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return
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}
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text := strings.Join(ed.lines, "\n") + "\n"
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err := os.WriteFile(ed.path, []byte(text), 0644)
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if err != nil {
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panic(err)
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}
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}
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func (ed *Editor) Finish() {
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termi.Clear()
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termi.HomeCursor()
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termi.Cooked()
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termi.ShowCursor()
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ed.Save()
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}
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func (ed *Editor) RuneCount() int {
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return utf8.RuneCountInString(ed.lines[ed.row])
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}
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func (ed *Editor) InsertRune(r rune) {
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ed.ins.Write(r)
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ed.col++
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}
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func (ed *Editor) Ring() {
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ed.bell = true
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}
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