diff --git a/cmd/goedit/main.go b/cmd/goedit/main.go index a3dd973..5882ea4 100644 --- a/cmd/goedit/main.go +++ b/cmd/goedit/main.go @@ -1,7 +1,177 @@ package main -import "fmt" +import ( + "fmt" + "os" + "strings" + + tea "github.com/charmbracelet/bubbletea" +) + +type Model struct { + lines []string + row int + col int + width int + height int +} + +func NewModel() Model { + return Model{ + lines: []string{""}, + row: 0, + col: 0, + width: 80, + height: 24, + } +} + +func (m Model) Init() tea.Cmd { + return nil +} + +func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) { + switch msg := msg.(type) { + case tea.WindowSizeMsg: + m.width = msg.Width + m.height = msg.Height + return m, nil + + case tea.KeyMsg: + switch msg.String() { + case "ctrl+c", "esc": + return m, tea.Quit + + case "up": + if m.row > 0 { + m.row-- + if m.col > len(m.lines[m.row]) { + m.col = len(m.lines[m.row]) + } + } + + case "down": + if m.row < len(m.lines)-1 { + m.row++ + if m.col > len(m.lines[m.row]) { + m.col = len(m.lines[m.row]) + } + } + + case "left": + if m.col > 0 { + m.col-- + } else if m.row > 0 { + m.row-- + m.col = len(m.lines[m.row]) + } + + case "right": + if m.col < len(m.lines[m.row]) { + m.col++ + } else if m.row < len(m.lines)-1 { + m.row++ + m.col = 0 + } + + case "home": + m.col = 0 + + case "end": + m.col = len(m.lines[m.row]) + + case "enter": + line := m.lines[m.row] + before := line[:m.col] + after := line[m.col:] + + m.lines[m.row] = before + newLine := after + + newLines := make([]string, len(m.lines)+1) + copy(newLines[:m.row+1], m.lines[:m.row+1]) + newLines[m.row+1] = newLine + copy(newLines[m.row+2:], m.lines[m.row+1:]) + + m.lines = newLines + m.row++ + m.col = 0 + + case "backspace": + if m.col > 0 { + line := m.lines[m.row] + m.lines[m.row] = line[:m.col-1] + line[m.col:] + m.col-- + } else if m.row > 0 { + prevLine := m.lines[m.row-1] + currentLine := m.lines[m.row] + m.lines[m.row-1] = prevLine + currentLine + + newLines := make([]string, len(m.lines)-1) + copy(newLines[:m.row], m.lines[:m.row]) + copy(newLines[m.row:], m.lines[m.row+1:]) + + m.lines = newLines + m.row-- + m.col = len(prevLine) + } + + case "delete": + line := m.lines[m.row] + if m.col < len(line) { + m.lines[m.row] = line[:m.col] + line[m.col+1:] + } else if m.row < len(m.lines)-1 { + nextLine := m.lines[m.row+1] + m.lines[m.row] = line + nextLine + + newLines := make([]string, len(m.lines)-1) + copy(newLines[:m.row+1], m.lines[:m.row+1]) + copy(newLines[m.row+1:], m.lines[m.row+2:]) + + m.lines = newLines + } + + default: + if len(msg.String()) == 1 && msg.String() >= " " { + char := msg.String() + line := m.lines[m.row] + m.lines[m.row] = line[:m.col] + char + line[m.col:] + m.col++ + } + } + } + + return m, nil +} + +func (m Model) View() string { + var b strings.Builder + + b.WriteString("Text Editor (Ctrl+C or Esc to quit)\n\n") + + for i, line := range m.lines { + if i == m.row { + if m.col == 0 { + b.WriteString("█" + line + "\n") + } else if m.col >= len(line) { + b.WriteString(line + "█\n") + } else { + b.WriteString(line[:m.col] + "█" + line[m.col:] + "\n") + } + } else { + b.WriteString(line + "\n") + } + } + + b.WriteString(fmt.Sprintf("\nRow: %d, Col: %d", m.row+1, m.col+1)) + + return b.String() +} func main() { - fmt.Println("Hello, World!") + p := tea.NewProgram(NewModel(), tea.WithAltScreen()) + if _, err := p.Run(); err != nil { + fmt.Printf("Error: %v", err) + os.Exit(1) + } } diff --git a/go.mod b/go.mod index b121877..9ae66ba 100644 --- a/go.mod +++ b/go.mod @@ -1,3 +1,27 @@ module git.keircn.com/keiran/goedit go 1.24.5 + +require github.com/charmbracelet/bubbletea v1.3.6 + +require ( + github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect + github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc // indirect + github.com/charmbracelet/lipgloss v1.1.0 // indirect + github.com/charmbracelet/x/ansi v0.9.3 // indirect + github.com/charmbracelet/x/cellbuf v0.0.13-0.20250311204145-2c3ea96c31dd // indirect + github.com/charmbracelet/x/term v0.2.1 // indirect + github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f // indirect + github.com/lucasb-eyer/go-colorful v1.2.0 // indirect + github.com/mattn/go-isatty v0.0.20 // indirect + github.com/mattn/go-localereader v0.0.1 // indirect + github.com/mattn/go-runewidth v0.0.16 // indirect + github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect + github.com/muesli/cancelreader v0.2.2 // indirect + github.com/muesli/termenv v0.16.0 // indirect + github.com/rivo/uniseg v0.4.7 // indirect + github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect + golang.org/x/sync v0.15.0 // indirect + golang.org/x/sys v0.33.0 // indirect + golang.org/x/text v0.3.8 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..85f1fed --- /dev/null +++ b/go.sum @@ -0,0 +1,45 @@ +github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k= 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v0.0.1 h1:ygSAOl7ZXTx4RdPYinUpg6W99U8jWvWi9Ye2JC/oIi4= +github.com/mattn/go-localereader v0.0.1/go.mod h1:8fBrzywKY7BI3czFoHkuzRoWE9C+EiG4R1k4Cjx5p88= +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/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 h1:ZK8zHtRHOkbHy6Mmr5D264iyp3TiX5OmNcI5cIARiQI= +github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6/go.mod h1:CJlz5H+gyd6CUWT45Oy4q24RdLyn7Md9Vj2/ldJBSIo= +github.com/muesli/cancelreader v0.2.2 h1:3I4Kt4BQjOR54NavqnDogx/MIoWBFa0StPA8ELUXHmA= +github.com/muesli/cancelreader v0.2.2/go.mod h1:3XuTXfFS2VjM+HTLZY9Ak0l6eUKfijIfMUZ4EgX0QYo= +github.com/muesli/termenv v0.16.0 h1:S5AlUN9dENB57rsbnkPyfdGuWIlkmzJjbFf0Tf5FWUc= +github.com/muesli/termenv v0.16.0/go.mod h1:ZRfOIKPFDYQoDFF4Olj7/QJbW60Ol/kL1pU3VfY/Cnk= +github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc= 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