| 1 | package logreader |
| 2 | |
| 3 | import ( |
| 4 | "fmt" |
| 5 | "strings" |
| 6 | |
| 7 | "github.com/charmbracelet/bubbles/viewport" |
| 8 | tea "github.com/charmbracelet/bubbletea" |
| 9 | "github.com/charmbracelet/lipgloss" |
| 10 | ) |
| 11 | |
| 12 | // focus tracks which pane has keyboard focus. |
| 13 | type focus int |
| 14 | |
| 15 | const ( |
| 16 | focusList focus = iota |
| 17 | focusDetail focus = iota |
| 18 | ) |
| 19 | |
| 20 | // With RoundedBorder + Padding(0,1): |
| 21 | // lipgloss.Width(W) → outer display width = W + 2 (borders) |
| 22 | // → usable text columns = W - 2 (padding) |
| 23 | const ( |
| 24 | borderCols = 2 // left + right border |
| 25 | paddingCols = 2 // Padding(0,1) → 1 left + 1 right |
| 26 | ) |
| 27 | |
| 28 | // Styles |
| 29 | var ( |
| 30 | paneStyle = lipgloss.NewStyle(). |
| 31 | Border(lipgloss.RoundedBorder()). |
| 32 | BorderForeground(lipgloss.Color("63")). |
| 33 | Padding(0, 1) |
| 34 | |
| 35 | paneActiveStyle = lipgloss.NewStyle(). |
| 36 | Border(lipgloss.RoundedBorder()). |
| 37 | BorderForeground(lipgloss.Color("42")). |
| 38 | Padding(0, 1) |
| 39 | |
| 40 | selectedStyle = lipgloss.NewStyle(). |
| 41 | Background(lipgloss.Color("63")). |
| 42 | Foreground(lipgloss.Color("230")). |
| 43 | Bold(true) |
| 44 | |
| 45 | kindInStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("42")).Bold(true) // green |
| 46 | kindOutStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("33")).Bold(true) // blue |
| 47 | kindResStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("214")).Bold(true) // orange |
| 48 | kindStrStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("170")).Bold(true) // purple |
| 49 | kindInfoStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("117")) // light blue |
| 50 | kindWarnStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("220")) // yellow |
| 51 | kindErrStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("196")).Bold(true) // red |
| 52 | kindDebugStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("241")) // gray |
| 53 | kindLogStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("241")) // gray |
| 54 | |
| 55 | timeStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("241")) |
| 56 | sepStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("240")) |
| 57 | titleStyle = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("63")) |
| 58 | helpStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("241")) |
| 59 | ) |
| 60 | |
| 61 | func kindStyle(k EntryKind) lipgloss.Style { |
| 62 | switch k { |
| 63 | case KindIncoming: |
| 64 | return kindInStyle |
| 65 | case KindOutgoing: |
| 66 | return kindOutStyle |
| 67 | case KindResponse: |
| 68 | return kindResStyle |
| 69 | case KindStream: |
| 70 | return kindStrStyle |
| 71 | case KindInfo: |
| 72 | return kindInfoStyle |
| 73 | case KindWarn: |
| 74 | return kindWarnStyle |
| 75 | case KindError: |
| 76 | return kindErrStyle |
| 77 | case KindDebug: |
| 78 | return kindDebugStyle |
| 79 | default: |
| 80 | return kindLogStyle |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | var ( |
| 85 | searchStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("214")).Bold(true) |
| 86 | searchInputStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("252")) |
| 87 | matchHighlight = lipgloss.NewStyle().Background(lipgloss.Color("214")).Foreground(lipgloss.Color("0")).Bold(true) |
| 88 | noMatchStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("196")) |
| 89 | ) |
| 90 | |
| 91 | // Model is the bubbletea model for the log reader TUI. |
| 92 | type Model struct { |
| 93 | entries []Entry |
| 94 | cursor int |
| 95 | offset int // scroll offset for list |
| 96 | viewport viewport.Model |
| 97 | focus focus |
| 98 | width int |
| 99 | height int |
| 100 | ready bool |
| 101 | |
| 102 | // Search state. |
| 103 | searching bool // search input is active |
| 104 | searchQuery string // confirmed search query (used for n/N) |
| 105 | searchInput string // text being typed in search mode |
| 106 | } |
| 107 | |
| 108 | // New creates a new log reader TUI model. |
| 109 | func New(entries []Entry) Model { |
| 110 | return Model{ |
| 111 | entries: entries, |
| 112 | focus: focusList, |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | func (m Model) Init() tea.Cmd { |
| 117 | return nil |
| 118 | } |
| 119 | |
| 120 | func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) { |
| 121 | switch msg := msg.(type) { |
| 122 | case tea.KeyMsg: |
| 123 | // Search input mode takes priority. |
| 124 | if m.searching { |
| 125 | return m.updateSearch(msg) |
| 126 | } |
| 127 | |
| 128 | switch msg.String() { |
| 129 | case "q", "ctrl+c": |
| 130 | return m, tea.Quit |
| 131 | case "tab": |
| 132 | if m.focus == focusList { |
| 133 | m.focus = focusDetail |
| 134 | } else { |
| 135 | m.focus = focusList |
| 136 | } |
| 137 | return m, nil |
| 138 | } |
| 139 | |
| 140 | if m.focus == focusList { |
| 141 | return m.updateList(msg) |
| 142 | } |
| 143 | return m.updateDetail(msg) |
| 144 | |
| 145 | case tea.WindowSizeMsg: |
| 146 | m.width = msg.Width |
| 147 | m.height = msg.Height |
| 148 | m.ready = true |
| 149 | m.viewport = viewport.New(m.detailTextWidth(), m.contentHeight()) |
| 150 | m.viewport.Style = lipgloss.NewStyle() |
| 151 | m.updateViewport() |
| 152 | } |
| 153 | |
| 154 | return m, nil |
| 155 | } |
| 156 | |
| 157 | func (m Model) updateList(msg tea.KeyMsg) (tea.Model, tea.Cmd) { |
| 158 | switch msg.String() { |
| 159 | case "up": |
| 160 | if m.cursor > 0 { |
| 161 | m.cursor-- |
| 162 | m.ensureVisible() |
| 163 | m.updateViewport() |
| 164 | } |
| 165 | case "down": |
| 166 | if m.cursor < len(m.entries)-1 { |
| 167 | m.cursor++ |
| 168 | m.ensureVisible() |
| 169 | m.updateViewport() |
| 170 | } |
| 171 | case "home": |
| 172 | m.cursor = 0 |
| 173 | m.offset = 0 |
| 174 | m.updateViewport() |
| 175 | case "end": |
| 176 | m.cursor = len(m.entries) - 1 |
| 177 | m.ensureVisible() |
| 178 | m.updateViewport() |
| 179 | case "pgdown": |
| 180 | h := m.contentHeight() |
| 181 | m.cursor += h - 1 |
| 182 | if m.cursor >= len(m.entries) { |
| 183 | m.cursor = len(m.entries) - 1 |
| 184 | } |
| 185 | m.ensureVisible() |
| 186 | m.updateViewport() |
| 187 | case "pgup": |
| 188 | h := m.contentHeight() |
| 189 | m.cursor -= h - 1 |
| 190 | if m.cursor < 0 { |
| 191 | m.cursor = 0 |
| 192 | } |
| 193 | m.ensureVisible() |
| 194 | m.updateViewport() |
| 195 | case "/": |
| 196 | m.searching = true |
| 197 | m.searchInput = "" |
| 198 | case "n": |
| 199 | m.searchNext(1) |
| 200 | case "N": |
| 201 | m.searchNext(-1) |
| 202 | case "escape": |
| 203 | m.searchQuery = "" |
| 204 | } |
| 205 | return m, nil |
| 206 | } |
| 207 | |
| 208 | func (m Model) updateSearch(msg tea.KeyMsg) (tea.Model, tea.Cmd) { |
| 209 | switch msg.String() { |
| 210 | case "enter": |
| 211 | m.searching = false |
| 212 | m.searchQuery = m.searchInput |
| 213 | if m.searchQuery != "" { |
| 214 | m.searchNext(1) |
| 215 | } |
| 216 | case "escape": |
| 217 | m.searching = false |
| 218 | m.searchInput = "" |
| 219 | case "backspace": |
| 220 | if len(m.searchInput) > 0 { |
| 221 | m.searchInput = m.searchInput[:len(m.searchInput)-1] |
| 222 | } |
| 223 | case "ctrl+u": |
| 224 | m.searchInput = "" |
| 225 | default: |
| 226 | // Only accept printable characters. |
| 227 | s := msg.String() |
| 228 | if len(s) == 1 && s[0] >= 32 && s[0] < 127 || len(s) > 1 { |
| 229 | // Filter out special keys. |
| 230 | if !strings.HasPrefix(s, "ctrl+") && !strings.HasPrefix(s, "alt+") && |
| 231 | s != "up" && s != "down" && s != "left" && s != "right" && |
| 232 | s != "tab" && s != "pgup" && s != "pgdown" && s != "home" && s != "end" { |
| 233 | m.searchInput += s |
| 234 | } |
| 235 | } |
| 236 | } |
| 237 | return m, nil |
| 238 | } |
| 239 | |
| 240 | func (m *Model) searchNext(dir int) { //nolint:unparam |
| 241 | if m.searchQuery == "" { |
| 242 | return |
| 243 | } |
| 244 | query := strings.ToLower(m.searchQuery) |
| 245 | n := len(m.entries) |
| 246 | for i := 1; i <= n; i++ { |
| 247 | idx := (m.cursor + i*dir%n + n) % n |
| 248 | e := m.entries[idx] |
| 249 | if strings.Contains(strings.ToLower(e.Label), query) || |
| 250 | strings.Contains(strings.ToLower(e.Content), query) { |
| 251 | m.cursor = idx |
| 252 | m.ensureVisible() |
| 253 | m.updateViewport() |
| 254 | return |
| 255 | } |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | func (m Model) updateDetail(msg tea.KeyMsg) (tea.Model, tea.Cmd) { |
| 260 | switch msg.String() { |
| 261 | case "up": |
| 262 | m.viewport.ScrollUp(1) |
| 263 | case "down": |
| 264 | m.viewport.ScrollDown(1) |
| 265 | case "pgup": |
| 266 | m.viewport.HalfPageUp() |
| 267 | case "pgdown": |
| 268 | m.viewport.HalfPageDown() |
| 269 | case "home": |
| 270 | m.viewport.GotoTop() |
| 271 | case "end": |
| 272 | m.viewport.GotoBottom() |
| 273 | } |
| 274 | return m, nil |
| 275 | } |
| 276 | |
| 277 | func (m Model) View() string { |
| 278 | if !m.ready || len(m.entries) == 0 { |
| 279 | if len(m.entries) == 0 { |
| 280 | return "No log entries found.\n\nPress q to quit." |
| 281 | } |
| 282 | return "Loading..." |
| 283 | } |
| 284 | |
| 285 | listTW := m.listTextWidth() |
| 286 | contentH := m.contentHeight() |
| 287 | |
| 288 | // Build list pane content. |
| 289 | var list strings.Builder |
| 290 | rows := 0 |
| 291 | for i := m.offset; i < len(m.entries) && rows < contentH; i++ { |
| 292 | e := m.entries[i] |
| 293 | ts := " " |
| 294 | if !e.Time.IsZero() { |
| 295 | ts = e.Time.Format("15:04:05") |
| 296 | } |
| 297 | // 1(space) + 8(time) + 1(sp) + 8(kind) + 1(sp) = 19 fixed cols |
| 298 | labelMax := max(listTW-19, 10) |
| 299 | kindTag := fmt.Sprintf("%-8s", e.Kind.String()) |
| 300 | if rows > 0 { |
| 301 | list.WriteByte('\n') |
| 302 | } |
| 303 | if i == m.cursor { |
| 304 | line := fmt.Sprintf(" %s %-8s %s", ts, e.Kind.String(), truncate(e.Label, labelMax)) |
| 305 | list.WriteString(selectedStyle.Width(listTW).Render(line)) |
| 306 | } else { |
| 307 | fmt.Fprintf(&list, " %s %s %s", |
| 308 | timeStyle.Render(ts), |
| 309 | kindStyle(e.Kind).Render(kindTag), |
| 310 | truncate(e.Label, labelMax), |
| 311 | ) |
| 312 | } |
| 313 | rows++ |
| 314 | |
| 315 | // Render separator after this entry if flagged and there's room. |
| 316 | if e.SepAfter && rows < contentH { |
| 317 | list.WriteByte('\n') |
| 318 | list.WriteString(sepStyle.Render(strings.Repeat("─", listTW))) |
| 319 | rows++ |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | lStyle := paneStyle |
| 324 | dStyle := paneStyle |
| 325 | if m.focus == focusList { |
| 326 | lStyle = paneActiveStyle |
| 327 | } else { |
| 328 | dStyle = paneActiveStyle |
| 329 | } |
| 330 | |
| 331 | listLipW := m.listLipWidth() |
| 332 | detailLipW := m.detailLipWidth() |
| 333 | |
| 334 | listPane := lStyle. |
| 335 | Width(listLipW). |
| 336 | Height(contentH). |
| 337 | Render(list.String()) |
| 338 | detailPane := dStyle. |
| 339 | Width(detailLipW). |
| 340 | Height(contentH). |
| 341 | Render(m.viewport.View()) |
| 342 | |
| 343 | body := lipgloss.JoinHorizontal(lipgloss.Top, listPane, detailPane) |
| 344 | |
| 345 | title := titleStyle.Render(fmt.Sprintf(" claudio log-reader — %d entries ", len(m.entries))) |
| 346 | |
| 347 | var bottom string |
| 348 | if m.searching { |
| 349 | bottom = searchStyle.Render("/") + searchInputStyle.Render(m.searchInput) + searchStyle.Render("█") |
| 350 | } else { |
| 351 | focusHint := "list" |
| 352 | if m.focus == focusDetail { |
| 353 | focusHint = "detail" |
| 354 | } |
| 355 | if m.searchQuery != "" { |
| 356 | bottom = helpStyle.Render(fmt.Sprintf( |
| 357 | " [%s] search:%s n/N:next/prev esc:clear tab:pane ↑↓ pgup/pgdn q:quit ", |
| 358 | focusHint, m.searchQuery, |
| 359 | )) |
| 360 | } else { |
| 361 | bottom = helpStyle.Render(fmt.Sprintf( |
| 362 | " [%s] tab:switch pane ↑↓:navigate pgup/pgdn:page /:search q:quit ", |
| 363 | focusHint, |
| 364 | )) |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | return lipgloss.JoinVertical(lipgloss.Left, title, body, bottom) |
| 369 | } |
| 370 | |
| 371 | var ( |
| 372 | headerKeyStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("42")).Bold(true) |
| 373 | headerValStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("252")) |
| 374 | reqLineStyle = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("214")) |
| 375 | sectionStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("63")).Bold(true) |
| 376 | thinkingStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("241")).Italic(true) |
| 377 | contentStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("252")) |
| 378 | labelStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("241")) |
| 379 | valueStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("252")).Bold(true) |
| 380 | ) |
| 381 | |
| 382 | func (m *Model) updateViewport() { |
| 383 | if m.cursor >= 0 && m.cursor < len(m.entries) { |
| 384 | e := m.entries[m.cursor] |
| 385 | w := m.detailTextWidth() |
| 386 | var content string |
| 387 | switch { |
| 388 | case e.RequestLine != "": |
| 389 | content = m.formatHTTPEntry(e, w) |
| 390 | case e.Stream != nil: |
| 391 | content = m.formatStreamEntry(e, w) |
| 392 | default: |
| 393 | content = wrapLines(e.Content, w) |
| 394 | } |
| 395 | m.viewport.SetContent(content) |
| 396 | m.viewport.GotoTop() |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | func (m Model) formatHTTPEntry(e Entry, maxW int) string { |
| 401 | var b strings.Builder |
| 402 | |
| 403 | // Request/status line. |
| 404 | b.WriteString(reqLineStyle.Render(truncate(e.RequestLine, maxW))) |
| 405 | b.WriteString("\n\n") |
| 406 | |
| 407 | // Headers table. |
| 408 | if len(e.Headers) > 0 { |
| 409 | b.WriteString(sectionStyle.Render("Headers")) |
| 410 | b.WriteByte('\n') |
| 411 | |
| 412 | // Find max key width for alignment. |
| 413 | maxKey := 0 |
| 414 | for _, h := range e.Headers { |
| 415 | if len(h.Key) > maxKey { |
| 416 | maxKey = len(h.Key) |
| 417 | } |
| 418 | } |
| 419 | // Cap key column so values still have room. |
| 420 | maxKey = min(maxKey, maxW/2) |
| 421 | |
| 422 | for _, h := range e.Headers { |
| 423 | key := truncate(h.Key, maxKey) |
| 424 | valW := max(maxW-maxKey-3, 10) // 3 = " : " |
| 425 | val := truncate(h.Value, valW) |
| 426 | fmt.Fprintf(&b, " %s : %s\n", |
| 427 | headerKeyStyle.Width(maxKey).Render(key), |
| 428 | headerValStyle.Render(val), |
| 429 | ) |
| 430 | } |
| 431 | } |
| 432 | |
| 433 | // Body. |
| 434 | if e.Body != "" { |
| 435 | b.WriteByte('\n') |
| 436 | b.WriteString(sectionStyle.Render("Body")) |
| 437 | b.WriteByte('\n') |
| 438 | body := prettifyBody(e.Body) |
| 439 | colored := colorizeJSON(body) |
| 440 | b.WriteString(ansiWrap(colored, maxW)) |
| 441 | } |
| 442 | |
| 443 | return b.String() |
| 444 | } |
| 445 | |
| 446 | func (m Model) formatStreamEntry(e Entry, maxW int) string { |
| 447 | sd := e.Stream |
| 448 | var b strings.Builder |
| 449 | |
| 450 | // Summary line. |
| 451 | b.WriteString(reqLineStyle.Render("Stream Response")) |
| 452 | b.WriteString("\n\n") |
| 453 | |
| 454 | // Info table. |
| 455 | b.WriteString(sectionStyle.Render("Info")) |
| 456 | b.WriteByte('\n') |
| 457 | writeKV(&b, "Model", sd.Model, maxW) |
| 458 | writeKV(&b, "Chunks", fmt.Sprintf("%d", sd.Chunks), maxW) |
| 459 | if sd.StopReason != "" { |
| 460 | writeKV(&b, "Stop Reason", sd.StopReason, maxW) |
| 461 | } |
| 462 | if sd.Usage != nil { |
| 463 | writeKV(&b, "Prompt Tokens", fmt.Sprintf("%d", sd.Usage.PromptTokens), maxW) |
| 464 | writeKV(&b, "Completion Tokens", fmt.Sprintf("%d", sd.Usage.CompletionTokens), maxW) |
| 465 | writeKV(&b, "Total Tokens", fmt.Sprintf("%d", sd.Usage.TotalTokens), maxW) |
| 466 | } |
| 467 | |
| 468 | // Thinking. |
| 469 | if sd.Thinking != "" { |
| 470 | b.WriteByte('\n') |
| 471 | b.WriteString(sectionStyle.Render("Thinking")) |
| 472 | b.WriteByte('\n') |
| 473 | b.WriteString(ansiWrap(thinkingStyle.Render(sd.Thinking), maxW)) |
| 474 | } |
| 475 | |
| 476 | // Content. |
| 477 | if sd.Content != "" { |
| 478 | b.WriteByte('\n') |
| 479 | b.WriteString(sectionStyle.Render("Content")) |
| 480 | b.WriteByte('\n') |
| 481 | b.WriteString(ansiWrap(contentStyle.Render(sd.Content), maxW)) |
| 482 | } |
| 483 | |
| 484 | return b.String() |
| 485 | } |
| 486 | |
| 487 | func writeKV(b *strings.Builder, key, val string, maxW int) { |
| 488 | keyW := 20 |
| 489 | fmt.Fprintf(b, " %s %s\n", |
| 490 | labelStyle.Width(keyW).Render(key+":"), |
| 491 | valueStyle.Render(truncate(val, max(maxW-keyW-3, 10))), |
| 492 | ) |
| 493 | } |
| 494 | |
| 495 | func (m *Model) ensureVisible() { |
| 496 | h := m.contentHeight() |
| 497 | if h <= 0 { |
| 498 | return |
| 499 | } |
| 500 | if m.cursor < m.offset { |
| 501 | m.offset = m.cursor |
| 502 | } |
| 503 | if m.cursor >= m.offset+h { |
| 504 | m.offset = m.cursor - h + 1 |
| 505 | } |
| 506 | } |
| 507 | |
| 508 | // Layout arithmetic: |
| 509 | // |
| 510 | // lipgloss.Width(W) renders to outer display width = W + borderCols. |
| 511 | // Text columns inside that = W - paddingCols. |
| 512 | // |
| 513 | // We need: listOuter + detailOuter = termWidth |
| 514 | // i.e. (listLipW + borderCols) + (detailLipW + borderCols) = termWidth |
| 515 | |
| 516 | // listLipWidth is the value passed to lipgloss.Width() for the list pane. |
| 517 | func (m Model) listLipWidth() int { |
| 518 | // Target ~40 % of the terminal for the list pane's outer width. |
| 519 | outerTarget := max(m.width*40/100, 30) |
| 520 | return outerTarget - borderCols // lipgloss Width value |
| 521 | } |
| 522 | |
| 523 | // detailLipWidth is the value passed to lipgloss.Width() for the detail pane. |
| 524 | func (m Model) detailLipWidth() int { |
| 525 | listOuter := m.listLipWidth() + borderCols |
| 526 | remaining := m.width - listOuter |
| 527 | return max(remaining-borderCols, 10) // lipgloss Width value |
| 528 | } |
| 529 | |
| 530 | // listTextWidth is the usable text columns inside the list pane. |
| 531 | func (m Model) listTextWidth() int { |
| 532 | return max(m.listLipWidth()-paddingCols, 10) |
| 533 | } |
| 534 | |
| 535 | // detailTextWidth is the usable text columns inside the detail pane. |
| 536 | func (m Model) detailTextWidth() int { |
| 537 | return max(m.detailLipWidth()-paddingCols, 10) |
| 538 | } |
| 539 | |
| 540 | // contentHeight is the usable row count inside each pane. |
| 541 | func (m Model) contentHeight() int { |
| 542 | // title(1) + border-top(1) + border-bottom(1) + help(1) = 4 rows of chrome |
| 543 | return max(m.height-4, 5) |
| 544 | } |
| 545 | |
| 546 | // wrapLines hard-wraps each line to fit within maxW columns. |
| 547 | func wrapLines(s string, maxW int) string { |
| 548 | if maxW <= 0 { |
| 549 | return s |
| 550 | } |
| 551 | var b strings.Builder |
| 552 | for _, line := range strings.Split(s, "\n") { |
| 553 | for len(line) > maxW { |
| 554 | b.WriteString(line[:maxW]) |
| 555 | b.WriteByte('\n') |
| 556 | line = line[maxW:] |
| 557 | } |
| 558 | b.WriteString(line) |
| 559 | b.WriteByte('\n') |
| 560 | } |
| 561 | return b.String() |
| 562 | } |
| 563 | |