| 1 | //! Shared text helpers for TUI selection and clipboard workflows. |
| 2 | |
| 3 | use ratatui::text::Line; |
| 4 | use unicode_width::UnicodeWidthChar; |
| 5 | |
| 6 | use crate::tui::history::HistoryCell; |
| 7 | use crate::tui::osc8; |
| 8 | |
| 9 | pub(super) fn history_cell_to_text(cell: &HistoryCell, width: u16) -> String { |
| 10 | cell.transcript_lines(width) |
| 11 | .into_iter() |
| 12 | .map(line_to_string) |
| 13 | .collect::<Vec<_>>() |
| 14 | .join("\n") |
| 15 | } |
| 16 | |
| 17 | fn line_to_string(line: Line<'static>) -> String { |
| 18 | let mut out = String::new(); |
| 19 | for span in line.spans { |
| 20 | if span.content.contains('\x1b') { |
| 21 | osc8::strip_into(&span.content, &mut out); |
| 22 | } else { |
| 23 | out.push_str(&span.content); |
| 24 | } |
| 25 | } |
| 26 | out |
| 27 | } |
| 28 | |
| 29 | pub(super) fn line_to_plain(line: &Line<'static>) -> String { |
| 30 | let mut out = String::new(); |
| 31 | for span in &line.spans { |
| 32 | if span.content.contains('\x1b') { |
| 33 | osc8::strip_into(&span.content, &mut out); |
| 34 | } else { |
| 35 | out.push_str(span.content.as_ref()); |
| 36 | } |
| 37 | } |
| 38 | out |
| 39 | } |
| 40 | |
| 41 | pub(super) fn text_display_width(text: &str) -> usize { |
| 42 | text.chars().map(char_display_width).sum() |
| 43 | } |
| 44 | |
| 45 | pub(super) fn slice_text(text: &str, start: usize, end: usize) -> String { |
| 46 | if end <= start { |
| 47 | return String::new(); |
| 48 | } |
| 49 | |
| 50 | let mut out = String::new(); |
| 51 | let mut col = 0usize; |
| 52 | for ch in text.chars() { |
| 53 | let ch_width = char_display_width(ch); |
| 54 | let ch_start = col; |
| 55 | let ch_end = col.saturating_add(ch_width); |
| 56 | if ch_end > start && ch_start < end { |
| 57 | out.push(ch); |
| 58 | } |
| 59 | col = ch_end; |
| 60 | if col >= end { |
| 61 | break; |
| 62 | } |
| 63 | } |
| 64 | out |
| 65 | } |
| 66 | |
| 67 | fn char_display_width(ch: char) -> usize { |
| 68 | if ch == '\t' { |
| 69 | 4 |
| 70 | } else { |
| 71 | UnicodeWidthChar::width(ch).unwrap_or(0).max(1) |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | #[cfg(test)] |
| 76 | mod tests { |
| 77 | use super::*; |
| 78 | use ratatui::text::Span; |
| 79 | |
| 80 | #[test] |
| 81 | fn line_to_plain_strips_osc_8_wrapper() { |
| 82 | // A span carrying an OSC 8-wrapped URL must not leak the escape into |
| 83 | // selection / clipboard output. The visible label survives. |
| 84 | let wrapped = format!( |
| 85 | "\x1b]8;;{}\x1b\\{}\x1b]8;;\x1b\\", |
| 86 | "https://example.com", "https://example.com" |
| 87 | ); |
| 88 | let line = Line::from(vec![ |
| 89 | Span::raw("see "), |
| 90 | Span::raw(wrapped), |
| 91 | Span::raw(" for details"), |
| 92 | ]); |
| 93 | assert_eq!(line_to_plain(&line), "see https://example.com for details"); |
| 94 | } |
| 95 | |
| 96 | #[test] |
| 97 | fn line_to_plain_passes_through_plain_spans() { |
| 98 | let line = Line::from(vec![Span::raw("plain "), Span::raw("text")]); |
| 99 | assert_eq!(line_to_plain(&line), "plain text"); |
| 100 | } |
| 101 | } |
| 102 |