TUIのEditツール周りの表示とカラー

This commit is contained in:
Keisuke Hirata 2026-04-22 01:17:58 +09:00
parent 3717569533
commit 7ce77f0ad5
4 changed files with 420 additions and 127 deletions

View File

@ -125,6 +125,7 @@ impl App {
args_stream: String::new(),
arguments: None,
state: ToolCallState::Pending,
edit_snapshot: None,
}));
}
Event::ToolCallArgsDelta { id, json } => {
@ -158,11 +159,26 @@ impl App {
output,
is_error,
} => {
// Pull the name / args out first so we can look at the
// (immutable) cache before taking the mutable block
// borrow below.
let (name, args) = self
.find_tool_call_mut(&id)
.map(|b| (b.name.clone(), b.arguments.clone()))
.unwrap_or_default();
let edit_snapshot = if !is_error && name == "Edit" {
args.as_deref()
.and_then(|s| serde_json::from_str::<serde_json::Value>(s).ok())
.and_then(|v| v["file_path"].as_str().map(|s| s.to_owned()))
.and_then(|path| self.cache.get(&path).map(|s| s.to_owned()))
} else {
None
};
if let Some(b) = self.find_tool_call_mut(&id) {
// Capture data we need for cache updates before we
// move `output` into the new state.
let name = b.name.clone();
let args = b.arguments.clone();
if edit_snapshot.is_some() {
b.edit_snapshot = edit_snapshot;
}
b.state = if is_error {
ToolCallState::Error {
summary,
@ -377,6 +393,7 @@ impl App {
args_stream: arguments.clone().unwrap_or_default(),
arguments,
state: ToolCallState::Executing,
edit_snapshot: None,
}));
}
"tool_result" => {
@ -384,9 +401,22 @@ impl App {
let summary = item["summary"].as_str().unwrap_or("").to_owned();
let output = item["content"].as_str().map(|s| s.to_owned());
let is_error = item["is_error"].as_bool().unwrap_or(false);
let (name, args) = self
.find_tool_call_mut(&id)
.map(|b| (b.name.clone(), b.arguments.clone()))
.unwrap_or_default();
let edit_snapshot = if !is_error && name == "Edit" {
args.as_deref()
.and_then(|s| serde_json::from_str::<serde_json::Value>(s).ok())
.and_then(|v| v["file_path"].as_str().map(|s| s.to_owned()))
.and_then(|path| self.cache.get(&path).map(|s| s.to_owned()))
} else {
None
};
if let Some(tc) = self.find_tool_call_mut(&id) {
let name = tc.name.clone();
let args = tc.arguments.clone();
if edit_snapshot.is_some() {
tc.edit_snapshot = edit_snapshot;
}
tc.state = if is_error {
ToolCallState::Error {
summary,
@ -436,6 +466,28 @@ pub fn fmt_tokens(n: u64) -> String {
}
}
/// Strip the `cat -n` line-number gutter that the Read tool prepends to
/// its output (one `"{n:>6}\t{content}"` per line) and return the raw
/// file body. Lines that don't match the pattern are kept verbatim, so
/// unrelated payloads pass through unharmed.
fn strip_cat_n_prefix(formatted: &str) -> String {
let mut out = String::with_capacity(formatted.len());
let mut first = true;
for line in formatted.split('\n') {
if !first {
out.push('\n');
}
first = false;
match line.split_once('\t') {
Some((prefix, rest)) if prefix.trim().chars().all(|c| c.is_ascii_digit()) => {
out.push_str(rest);
}
_ => out.push_str(line),
}
}
out
}
pub fn notification_source_label(source: NotificationSource) -> &'static str {
match source {
NotificationSource::Pod => "pod",
@ -464,7 +516,11 @@ fn apply_cache_update(
return;
};
if let Some(content) = output {
cache.put(path, content.to_owned());
// The Read tool emits a `cat -n` style display: each
// line is "{lineno:>6}\tcontent". Strip that framing
// so the cache mirrors the real file body and the
// Edit diff renderer has a faithful "before" view.
cache.put(path, strip_cat_n_prefix(content));
}
}
"Write" => {

View File

@ -48,6 +48,11 @@ pub struct ToolCallBlock {
/// Final arguments text once `ToolCallDone` lands.
pub arguments: Option<String>,
pub state: ToolCallState,
/// For Edit tool calls: snapshot of the file content *before* the
/// edit was applied to the cache. Captured at result time so the
/// diff renderer can reproduce the old-content context even after
/// subsequent mutations have rolled the cache forward.
pub edit_snapshot: Option<String>,
}
pub enum ToolCallState {

View File

@ -8,6 +8,7 @@
use ratatui::style::{Color, Modifier, Style};
use ratatui::text::{Line, Span};
use unicode_width::{UnicodeWidthChar, UnicodeWidthStr};
use crate::block::{Block, ToolCallBlock, ToolCallState};
use crate::cache::FileCache;
@ -28,6 +29,7 @@ pub fn render_tool(
cache: &FileCache,
blocks: &[Block],
start: usize,
width: u16,
mode: Mode,
) -> ToolRenderOutput {
let Some(Block::ToolCall(tc)) = blocks.get(start) else {
@ -40,7 +42,7 @@ pub fn render_tool(
match tc.name.as_str() {
"Read" => render_read_aggregate(blocks, start, mode),
"Write" => single(render_write(cache, tc, mode)),
"Edit" => single(render_edit(cache, tc, mode)),
"Edit" => single(render_edit(cache, tc, width, mode)),
"Glob" => single(render_search(tc, mode, "Glob")),
"Grep" => single(render_search(tc, mode, "Grep")),
_ => single(render_default(tc, mode)),
@ -83,9 +85,9 @@ fn render_read_aggregate(blocks: &[Block], start: usize, mode: Mode) -> ToolRend
let mut lines: Vec<Line<'static>> = Vec::new();
let header = if in_progress {
format!("[tool] Read — reading ({count} file{}…)", plural(count))
format!("Read — reading ({count} file{}…)", plural(count))
} else {
format!("[tool] Read — {count} file{} read", plural(count))
format!("Read — {count} file{} read", plural(count))
};
lines.push(Line::from(vec![
Span::styled(header, tool_style),
@ -161,7 +163,7 @@ fn render_write(cache: &FileCache, tc: &ToolCallBlock, mode: Mode) -> Vec<Line<'
if matches!(mode, Mode::Overview) {
return vec![Line::from(vec![
Span::styled("[tool] Write — ".to_owned(), tool_style),
Span::styled("Write — ".to_owned(), tool_style),
Span::styled(format!("{label} "), label_style),
Span::styled(path, Style::default().fg(Color::White)),
])];
@ -169,7 +171,7 @@ fn render_write(cache: &FileCache, tc: &ToolCallBlock, mode: Mode) -> Vec<Line<'
let mut lines = vec![
Line::from(vec![
Span::styled("[tool] Write — ".to_owned(), tool_style),
Span::styled("Write — ".to_owned(), tool_style),
Span::styled(format!("{label} "), label_style),
Span::styled(path.clone(), Style::default().fg(Color::White)),
Span::styled(
@ -212,7 +214,7 @@ fn render_write(cache: &FileCache, tc: &ToolCallBlock, mode: Mode) -> Vec<Line<'
// Edit
// ---------------------------------------------------------------------
fn render_edit(cache: &FileCache, tc: &ToolCallBlock, mode: Mode) -> Vec<Line<'static>> {
fn render_edit(cache: &FileCache, tc: &ToolCallBlock, width: u16, mode: Mode) -> Vec<Line<'static>> {
let args = parsed_args(tc);
let path = args
.as_ref()
@ -229,7 +231,7 @@ fn render_edit(cache: &FileCache, tc: &ToolCallBlock, mode: Mode) -> Vec<Line<'s
let tool_style = Style::default().fg(Color::Cyan);
let header = Line::from(vec![
Span::styled(format!("[tool] Edit — {}", path), tool_style),
Span::styled(format!("Edit — {}", path), tool_style),
Span::styled(
format!(" ({})", state_suffix(&tc.state)),
Style::default().fg(Color::DarkGray),
@ -242,87 +244,249 @@ fn render_edit(cache: &FileCache, tc: &ToolCallBlock, mode: Mode) -> Vec<Line<'s
let mut lines = vec![header];
// Best-effort diff. Uses the cached content as the "before" snapshot
// so what we show is consistent with the TUI's own state even if
// the on-disk file has since diverged.
let diff_lines = cache
.get(&path)
.map(|content| build_edit_diff(content, &old, &new));
if let Some(diff) = diff_lines {
for l in diff {
// Prefer the snapshot captured right before the cache was rolled
// forward (so we always diff against the true "before" even after
// subsequent mutations). Fall back to the current cache for
// replayed history where no snapshot was recorded.
let before = tc.edit_snapshot.as_deref().or_else(|| cache.get(&path));
if let Some(content) = before {
for l in build_edit_diff(content, &old, &new, width) {
lines.push(l);
}
} else {
lines.push(Line::from(vec![
Span::raw(" "),
Span::styled(
"(no cached content — run Read first for a diff view)".to_owned(),
Style::default().fg(Color::DarkGray),
),
]));
lines.push(Line::from(Span::styled(
" (no cached content — run Read first for a diff view)".to_owned(),
Style::default().fg(Color::DarkGray),
)));
}
maybe_error_line(&mut lines, &tc.state);
lines
}
fn build_edit_diff(content: &str, old: &str, new: &str) -> Vec<Line<'static>> {
fn build_edit_diff(content: &str, old: &str, new: &str, width: u16) -> Vec<Line<'static>> {
// Locate the first (and typically only) match.
let Some(idx) = content.find(old) else {
return vec![Line::from(vec![
Span::raw(" "),
Span::styled(
"(old_string not found in cached content)".to_owned(),
Style::default().fg(Color::DarkGray),
),
])];
return vec![Line::from(Span::styled(
" (old_string not found in cached content)".to_owned(),
Style::default().fg(Color::DarkGray),
))];
};
let end = idx + old.len();
// Convert byte ranges to line ranges.
let before = &content[..idx];
let line_of_idx = before.lines().count();
// `lines()` omits a trailing empty line when the text ends in \n —
// fine for our purposes (we only need approximate line ranges).
let replaced_line_count = content[idx..end].lines().count().max(1);
//
// Zero-based line index of `idx` = number of newlines preceding
// it. `before.lines().count()` does NOT give this: for content
// without a trailing newline it over-counts on the last line
// (e.g. "h".lines() == ["h"].count() == 1 but "h" is still on
// line 0).
let all_lines: Vec<&str> = content.lines().collect();
let line_of_idx = content[..idx].matches('\n').count().min(all_lines.len());
let replaced_line_count = content[idx..end].lines().count().max(1);
// Keep subsequent slice math in-bounds no matter what the
// positions say — Edit never wants to panic the whole TUI just
// because cached content and live args disagree.
let replaced_end = (line_of_idx + replaced_line_count).min(all_lines.len());
let ctx_start = line_of_idx.saturating_sub(EDIT_DIFF_CONTEXT);
let ctx_end = (line_of_idx + replaced_line_count + EDIT_DIFF_CONTEXT).min(all_lines.len());
let ctx_end = (replaced_end + EDIT_DIFF_CONTEXT).min(all_lines.len());
let ctx_style = Style::default().fg(Color::Gray);
let minus_style = Style::default().fg(Color::Red);
let plus_style = Style::default().fg(Color::Green);
let old_line_count = old.lines().count().max(1);
let new_line_count = new.lines().count().max(1);
// Width for the line-number gutter: fit the largest number we'll
// print across either file's version of this hunk.
let max_line = ctx_end
.max(line_of_idx + new_line_count)
.max(1);
let num_w = max_line.to_string().len();
// BG-highlighted rows for -/+ so the change stripe extends full
// width; context lines stay plain. FG is left at terminal default
// on colored rows so contrast survives user terminal themes.
let ctx_text = Style::default().fg(Color::Gray);
let num_style_ctx = Style::default().fg(Color::DarkGray);
let num_style_dim = Style::default().fg(Color::White);
// kanagawa-nvim palette:
// winterRed #43242B / winterGreen #2B3328 — diff row backgrounds
// autumnRed #C34043 / autumnGreen #76946A — git add/delete markers
let minus_line_style = Style::default().bg(Color::Rgb(0x43, 0x24, 0x2B));
let plus_line_style = Style::default().bg(Color::Rgb(0x2B, 0x33, 0x28));
let minus_marker_style = Style::default().fg(Color::Rgb(0xC3, 0x40, 0x43));
let plus_marker_style = Style::default().fg(Color::Rgb(0x76, 0x94, 0x6A));
let mut lines: Vec<Line<'static>> = Vec::new();
for l in &all_lines[ctx_start..line_of_idx] {
lines.push(Line::from(vec![
Span::raw(" "),
Span::styled(format!(" {l}"), ctx_style),
]));
// Layout per row (independent of outer history padding):
// 1-space gutter + line number (right-aligned to num_w) + 1 space
// + 1-char marker (" " / "-" / "+") + content
let num_gutter_w = num_w + 2; // leading sp + num + trailing sp
let fmt_num = |n: usize| format!(" {n:>num_w$} ", n = n, num_w = num_w);
let blank_num = " ".repeat(num_gutter_w);
// Pre-context: 1-based line numbers in the original file.
for (offset, l) in all_lines[ctx_start..line_of_idx].iter().enumerate() {
let n = ctx_start + offset + 1;
emit_diff_row(
&mut lines,
fmt_num(n),
&blank_num,
num_style_ctx,
' ',
Style::default(),
l,
Style::default(), // no BG
ctx_text,
width,
);
}
for l in old.lines() {
lines.push(Line::from(vec![
Span::raw(" "),
Span::styled(format!("-{l}"), minus_style),
]));
// Removed: old line numbers (line_of_idx + offset + 1). Row BG is
// red; continuation rows keep the same BG via the wrap helper.
for (offset, l) in old.lines().enumerate() {
let n = line_of_idx + offset + 1;
emit_diff_row(
&mut lines,
fmt_num(n),
&blank_num,
num_style_dim,
'-',
minus_marker_style,
l,
minus_line_style,
Style::default(),
width,
);
}
for l in new.lines() {
lines.push(Line::from(vec![
Span::raw(" "),
Span::styled(format!("+{l}"), plus_style),
]));
// Added: new line numbers — same base as removed since everything
// above the hunk is unchanged.
for (offset, l) in new.lines().enumerate() {
let n = line_of_idx + offset + 1;
emit_diff_row(
&mut lines,
fmt_num(n),
&blank_num,
num_style_dim,
'+',
plus_marker_style,
l,
plus_line_style,
Style::default(),
width,
);
}
for l in &all_lines[line_of_idx + replaced_line_count..ctx_end] {
lines.push(Line::from(vec![
Span::raw(" "),
Span::styled(format!(" {l}"), ctx_style),
]));
// Post-context: positions relative to the ORIGINAL file so numbers
// stay consistent with the snapshot we're diffing against. After a
// successful edit the real file's numbering will shift by
// `new_line_count - old_line_count`, but the purpose of this view
// is to read the change itself, not to navigate the updated file.
for (offset, l) in all_lines[replaced_end..ctx_end].iter().enumerate() {
let n = replaced_end + offset + 1;
emit_diff_row(
&mut lines,
fmt_num(n),
&blank_num,
num_style_ctx,
' ',
Style::default(),
l,
Style::default(),
ctx_text,
width,
);
}
// Suppress unused-variable lint for the value used only in
// `max_line` computation (kept for readability there).
let _ = old_line_count;
lines
}
/// Emit one diff row, wrapping long content into continuation rows that
/// keep the vertical diff structure intact:
///
/// ```text
/// 3 +very long line that overflows into a second terminal row
/// +of the same logical diff line
/// ```
///
/// `num_text` is the gutter text for the first row (e.g. " 3 "),
/// `blank_num` is the same width but all spaces for continuation rows.
/// `line_style` applies to every emitted row so BG-highlighted diffs
/// retain their highlight across the wrap.
#[allow(clippy::too_many_arguments)]
fn emit_diff_row(
out: &mut Vec<Line<'static>>,
num_text: String,
blank_num: &str,
num_style: Style,
marker: char,
marker_style: Style,
content: &str,
line_style: Style,
content_text_style: Style,
width: u16,
) {
let total = width as usize;
let gutter_w = UnicodeWidthStr::width(num_text.as_str());
// Reserve one more col for the marker char; anything beyond goes
// into the content.
let content_budget = total.saturating_sub(gutter_w).saturating_sub(1);
let mut is_first = true;
let mut remaining = content;
loop {
let (chunk, rest) = if content_budget == 0 {
(remaining, "")
} else {
split_at_width(remaining, content_budget)
};
let gutter = if is_first {
num_text.clone()
} else {
blank_num.to_owned()
};
let content_span = if content_text_style == Style::default() {
Span::raw(chunk.to_owned())
} else {
Span::styled(chunk.to_owned(), content_text_style)
};
let line = Line::from(vec![
Span::styled(gutter, num_style),
Span::styled(marker.to_string(), marker_style),
content_span,
])
.style(line_style);
out.push(line);
is_first = false;
remaining = rest;
if remaining.is_empty() {
break;
}
}
}
/// Split `s` at the first char boundary whose accumulated display width
/// exceeds `max_cols`. Returns `(head, tail)` — head's display width is
/// guaranteed ≤ `max_cols`.
fn split_at_width(s: &str, max_cols: usize) -> (&str, &str) {
if max_cols == 0 {
return (s, "");
}
let mut col = 0usize;
let mut end_byte = 0usize;
for (i, c) in s.char_indices() {
let cw = UnicodeWidthChar::width(c).unwrap_or(0);
if col + cw > max_cols {
return s.split_at(i);
}
col += cw;
end_byte = i + c.len_utf8();
}
s.split_at(end_byte)
}
// ---------------------------------------------------------------------
// Glob / Grep
// ---------------------------------------------------------------------
@ -343,14 +507,14 @@ fn render_search(tc: &ToolCallBlock, mode: Mode, label: &str) -> Vec<Line<'stati
.unwrap_or(state_suffix(&tc.state))
.to_owned();
return vec![Line::from(vec![
Span::styled(format!("[tool] {label}"), tool_style),
Span::styled(format!("{label}"), tool_style),
Span::styled(first, Style::default().fg(Color::White)),
])];
}
let mut lines = vec![Line::from(vec![
Span::styled(
format!("[tool] {label}{}", state_suffix(&tc.state)),
format!("{label}{}", state_suffix(&tc.state)),
tool_style,
),
])];
@ -397,9 +561,9 @@ fn render_default(tc: &ToolCallBlock, mode: Mode) -> Vec<Line<'static>> {
_ => state_suffix(&tc.state).to_owned(),
};
let label = if suffix.is_empty() {
format!("[tool] {}{}", tc.name, state_suffix(&tc.state))
format!("{}{}", tc.name, state_suffix(&tc.state))
} else {
format!("[tool] {}{suffix}", tc.name)
format!("{}{suffix}", tc.name)
};
return vec![Line::from(vec![
Span::styled(label, tool_style),
@ -408,7 +572,7 @@ fn render_default(tc: &ToolCallBlock, mode: Mode) -> Vec<Line<'static>> {
let mut lines = vec![Line::from(vec![
Span::styled(
format!("[tool] {}{}", tc.name, state_suffix(&tc.state)),
format!("{}{}", tc.name, state_suffix(&tc.state)),
tool_style,
),
])];

View File

@ -18,7 +18,7 @@ use ratatui::layout::{Constraint, Layout, Position, Rect};
use ratatui::style::{Color, Modifier, Style};
use ratatui::text::{Line, Span};
use ratatui::widgets::{Block as UiBlock, BorderType, Borders, Padding, Paragraph, Widget, Wrap};
use unicode_width::UnicodeWidthChar;
use unicode_width::{UnicodeWidthChar, UnicodeWidthStr};
use protocol::{Greeting, NotificationLevel};
@ -108,7 +108,7 @@ pub fn compute_history(app: &App, width: u16) -> HistoryLayout {
logical_turn_starts.push(logical.len());
}
if matches!(block, Block::ToolCall(_)) {
let out = crate::tool::render_tool(&app.cache, &app.blocks, i, app.mode);
let out = crate::tool::render_tool(&app.cache, &app.blocks, i, width, app.mode);
logical.extend(out.lines);
i += out.consumed.max(1);
continue;
@ -136,9 +136,6 @@ pub fn compute_history(app: &App, width: u16) -> HistoryLayout {
HistoryLayout { lines, turn_starts }
}
/// Maximum body lines a normal-mode block may emit before truncation.
const NORMAL_MAX_LINES: usize = 6;
/// Horizontal gutter around the log area. Applied via a
/// [`Block`](ratatui::widgets::Block)'s padding so *every* row — including
/// continuation rows from wrapping — sits inside the same margin, no
@ -188,7 +185,11 @@ fn draw_history(frame: &mut Frame, app: &mut App, area: Rect) {
}
/// Split one logical line into one-terminal-row `Line`s via char-aware
/// wrapping. Preserves per-span styles and the source line's alignment.
/// wrapping. Preserves per-span styles, the source line's alignment,
/// and the source line's own style. If the source line carries a
/// background color, each emitted row is padded to `width` with spaces
/// styled by that line style — so diff-style row highlights (red/green
/// backgrounds) extend cleanly to the right edge of the terminal.
fn wrap_line_into(line: Line<'static>, width: u16, out: &mut Vec<Line<'static>>) {
if width == 0 {
out.push(line);
@ -196,6 +197,8 @@ fn wrap_line_into(line: Line<'static>, width: u16, out: &mut Vec<Line<'static>>)
}
let w = width as usize;
let alignment = line.alignment;
let line_style = line.style;
let fill_to_width = line_style.bg.is_some();
let mut current: Vec<Span<'static>> = Vec::new();
let mut row_width: usize = 0;
@ -219,7 +222,12 @@ fn wrap_line_into(line: Line<'static>, width: u16, out: &mut Vec<Line<'static>>)
let push_row = |current: &mut Vec<Span<'static>>,
row_width: &mut usize,
out: &mut Vec<Line<'static>>| {
let mut l = Line::from(std::mem::take(current));
if fill_to_width && *row_width < w {
let pad = w - *row_width;
current.push(Span::styled(" ".repeat(pad), line_style));
*row_width = w;
}
let mut l = Line::from(std::mem::take(current)).style(line_style);
if let Some(a) = alignment {
l = l.alignment(a);
}
@ -292,12 +300,15 @@ fn render_block_into(
)));
}
Block::UserMessage { text } => match mode {
Mode::Overview => push_overview_line(lines, text, MessageKind::User, "> "),
_ => push_padded_truncated(lines, text, MessageKind::User, mode),
Mode::Overview => push_overview_line(lines, text, width, MessageKind::User, "> "),
// User input and assistant prose are the primary readable
// content of a turn — never compressed in detail / normal.
// Only `overview` folds them to a single line.
_ => push_padded_lines(lines, text, MessageKind::User),
},
Block::AssistantText { text } => match mode {
Mode::Overview => push_overview_line(lines, text, MessageKind::Assistant, ""),
_ => push_padded_truncated(lines, text, MessageKind::Assistant, mode),
Mode::Overview => push_overview_line(lines, text, width, MessageKind::Assistant, ""),
_ => push_padded_lines(lines, text, MessageKind::Assistant),
},
// ToolCall is dispatched in `compute_history` via `tool::render_tool`
// so it can consume multiple adjacent blocks (Read aggregation).
@ -318,11 +329,11 @@ fn render_block_into(
let label = notification_source_label(*source);
let text = format!("{prefix} {label}: {message}");
match mode {
Mode::Overview => push_overview_line(lines, &text, kind, ""),
_ => push_padded_truncated(lines, &text, kind, mode),
Mode::Overview => push_overview_line(lines, &text, width, kind, ""),
_ => push_padded_lines(lines, &text, kind),
}
}
Block::Compact(evt) => render_compact(lines, evt, mode),
Block::Compact(evt) => render_compact(lines, evt, width, mode),
Block::TurnStats {
requests,
input_tokens,
@ -352,62 +363,119 @@ fn push_padded_lines(lines: &mut Vec<Line<'static>>, text: &str, kind: MessageKi
}
}
/// Normal / detail padded text: detail prints every line; normal caps at
/// `NORMAL_MAX_LINES` and appends a "+N more" footer.
fn push_padded_truncated(
lines: &mut Vec<Line<'static>>,
text: &str,
kind: MessageKind,
mode: Mode,
) {
if matches!(mode, Mode::Detail) {
push_padded_lines(lines, text, kind);
return;
}
let style = kind_style(kind);
let all: Vec<&str> = text.lines().collect();
let shown = all.len().min(NORMAL_MAX_LINES);
for raw in &all[..shown] {
lines.push(Line::from(Span::styled((*raw).to_owned(), style)));
}
if all.len() > shown {
let hidden = all.len() - shown;
lines.push(Line::from(Span::styled(
format!("… +{hidden} more lines"),
Style::default().fg(Color::DarkGray),
)));
}
if text.is_empty() {
lines.push(Line::from(""));
}
}
/// Single-line summary for overview mode. First non-empty line of the
/// source text, with an optional prefix (e.g. "> " for user messages).
/// Single-line summary for overview mode. The output is clipped to
/// exactly one rendered terminal row at `width` columns — the first
/// non-empty logical line is truncated (with `…`) to fit alongside an
/// optional prefix and a `(+N lines)` tail that counts visual rows
/// hidden by the fold (auto-wrap inclusive, so a single long paragraph
/// that wraps to many rows correctly reports the hidden rows).
fn push_overview_line(
lines: &mut Vec<Line<'static>>,
text: &str,
width: u16,
kind: MessageKind,
prefix: &str,
) {
let first = text.lines().find(|l| !l.trim().is_empty()).unwrap_or("");
let more = text.lines().count().saturating_sub(1);
let total_visual = count_visual_rows(text, width);
let first_visual = count_visual_rows(first, width);
// Budget for the first line's truncated content. Reserve columns
// for the prefix up front and for the "(+N lines)" tail if we'll
// emit one. `more` counts visual rows hidden by the fold; the one
// row we're about to render is subtracted.
let total_cols = width.max(1) as usize;
let prefix_width = UnicodeWidthStr::width(prefix);
let more = total_visual.saturating_sub(1);
let tentative_tail = if more > 0 {
format!(" (+{more} lines)")
} else {
String::new()
};
let avail = total_cols.saturating_sub(prefix_width);
// On very narrow widths where the tail alone would eat the row,
// drop it — keeping at least some of the actual content visible
// matters more than the hidden-rows label.
let (tail, budget) = {
let tw = UnicodeWidthStr::width(tentative_tail.as_str());
if !tentative_tail.is_empty() && tw >= avail {
(String::new(), avail)
} else {
(tentative_tail, avail.saturating_sub(tw))
}
};
let first_width = UnicodeWidthStr::width(first);
let needs_truncation = first_width > budget || first_visual > 1;
let shown = if needs_truncation {
truncate_with_ellipsis(first, budget)
} else {
first.to_owned()
};
let style = kind_style(kind);
let mut spans: Vec<Span<'static>> = Vec::new();
if !prefix.is_empty() {
spans.push(Span::styled(prefix.to_owned(), style));
}
spans.push(Span::styled(first.to_owned(), style));
if more > 0 {
spans.push(Span::styled(
format!(" (+{more} lines)"),
Style::default().fg(Color::DarkGray),
));
spans.push(Span::styled(shown, style));
if !tail.is_empty() {
spans.push(Span::styled(tail, Style::default().fg(Color::DarkGray)));
}
lines.push(Line::from(spans));
}
fn render_compact(lines: &mut Vec<Line<'static>>, evt: &CompactEvent, mode: Mode) {
/// Truncate `s` so its display width fits within `max_width`, appending
/// `…` when a cut is actually applied. A budget of 0 yields an empty
/// string; a budget of 1 drops the ellipsis and returns at most one
/// column of content so we never blow past the cap.
fn truncate_with_ellipsis(s: &str, max_width: usize) -> String {
if max_width == 0 {
return String::new();
}
let s_width = UnicodeWidthStr::width(s);
if s_width <= max_width {
return s.to_owned();
}
// Reserve 1 col for the ellipsis when we have room; on a 1-col
// budget there's no room for both content and the marker, so just
// clip to whatever single column fits.
let (inner_budget, append_ellipsis) = if max_width >= 2 {
(max_width - 1, true)
} else {
(max_width, false)
};
let mut out = String::new();
let mut w = 0usize;
for c in s.chars() {
let cw = UnicodeWidthChar::width(c).unwrap_or(0);
if w + cw > inner_budget {
break;
}
out.push(c);
w += cw;
}
if append_ellipsis {
out.push('…');
}
out
}
/// Visual row count of `text` when rendered at `width` columns with
/// simple char-based wrap. Each empty logical line counts as 1 row.
fn count_visual_rows(text: &str, width: u16) -> usize {
if text.is_empty() {
return 0;
}
let w = width.max(1) as usize;
let mut total = 0usize;
for line in text.lines() {
let lw = UnicodeWidthStr::width(line);
total += if lw == 0 { 1 } else { lw.div_ceil(w) };
}
total.max(1)
}
fn render_compact(lines: &mut Vec<Line<'static>>, evt: &CompactEvent, width: u16, mode: Mode) {
let (text, kind) = match evt {
CompactEvent::Start => ("[compact] starting".to_owned(), MessageKind::NoticeWarn),
CompactEvent::Done { new_session_id } => {
@ -423,7 +491,7 @@ fn render_compact(lines: &mut Vec<Line<'static>>, evt: &CompactEvent, mode: Mode
),
};
match mode {
Mode::Overview => push_overview_line(lines, &text, kind, ""),
Mode::Overview => push_overview_line(lines, &text, width, kind, ""),
_ => push_padded_lines(lines, &text, kind),
}
}