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fix(compatibility): support changing index colors with osc (zellij-or…
…g#646) * fix(compatibility): support changing index colors with osc * style(fmt): make rustfmt happy * style(fmt): make clippy happy * style(fmt): make rustfmt happy * docs(changelog): document fix
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,317 @@ | ||
| use zellij_utils::position::Position; | ||
| use zellij_utils::zellij_tile::prelude::PaletteColor; | ||
| use zellij_utils::{vte, zellij_tile}; | ||
|
|
||
| use std::convert::TryFrom; | ||
| use std::fmt::Debug; | ||
| use std::os::unix::io::RawFd; | ||
| use std::time::{self, Instant}; | ||
| use zellij_tile::data::Palette; | ||
|
|
||
| use zellij_utils::pane_size::PositionAndSize; | ||
|
|
||
| use crate::panes::AnsiCode; | ||
| use crate::panes::{ | ||
| grid::Grid, | ||
| terminal_character::{ | ||
| CharacterStyles, CursorShape, TerminalCharacter, EMPTY_TERMINAL_CHARACTER, | ||
| }, | ||
| }; | ||
| use crate::pty::VteBytes; | ||
| use crate::tab::Pane; | ||
|
|
||
| pub fn parse_sgr_color(params: &mut dyn Iterator<Item = u16>) -> Option<AnsiCode> { | ||
| match params.next() { | ||
| Some(2) => Some(AnsiCode::RgbCode(( | ||
| u8::try_from(params.next()?).ok()?, | ||
| u8::try_from(params.next()?).ok()?, | ||
| u8::try_from(params.next()?).ok()?, | ||
| ))), | ||
| Some(5) => Some(AnsiCode::ColorIndex(u8::try_from(params.next()?).ok()?)), | ||
| _ => None, | ||
| } | ||
| } | ||
|
|
||
| /// Parse colors in XParseColor format. | ||
| pub fn xparse_color(color: &[u8]) -> Option<AnsiCode> { | ||
| if !color.is_empty() && color[0] == b'#' { | ||
| parse_legacy_color(&color[1..]) | ||
| } else if color.len() >= 4 && &color[..4] == b"rgb:" { | ||
| parse_rgb_color(&color[4..]) | ||
| } else { | ||
| None | ||
| } | ||
| } | ||
|
|
||
| /// Parse colors in `rgb:r(rrr)/g(ggg)/b(bbb)` format. | ||
| pub fn parse_rgb_color(color: &[u8]) -> Option<AnsiCode> { | ||
| let colors = std::str::from_utf8(color) | ||
| .ok()? | ||
| .split('/') | ||
| .collect::<Vec<_>>(); | ||
|
|
||
| if colors.len() != 3 { | ||
| return None; | ||
| } | ||
|
|
||
| // Scale values instead of filling with `0`s. | ||
| let scale = |input: &str| { | ||
| if input.len() > 4 { | ||
| None | ||
| } else { | ||
| let max = u32::pow(16, input.len() as u32) - 1; | ||
| let value = u32::from_str_radix(input, 16).ok()?; | ||
| Some((255 * value / max) as u8) | ||
| } | ||
| }; | ||
|
|
||
| Some(AnsiCode::RgbCode(( | ||
| scale(colors[0])?, | ||
| scale(colors[1])?, | ||
| scale(colors[2])?, | ||
| ))) | ||
| } | ||
|
|
||
| /// Parse colors in `#r(rrr)g(ggg)b(bbb)` format. | ||
| pub fn parse_legacy_color(color: &[u8]) -> Option<AnsiCode> { | ||
| let item_len = color.len() / 3; | ||
|
|
||
| // Truncate/Fill to two byte precision. | ||
| let color_from_slice = |slice: &[u8]| { | ||
| let col = usize::from_str_radix(std::str::from_utf8(slice).ok()?, 16).ok()? << 4; | ||
| Some((col >> (4 * slice.len().saturating_sub(1))) as u8) | ||
| }; | ||
|
|
||
| Some(AnsiCode::RgbCode(( | ||
| color_from_slice(&color[0..item_len])?, | ||
| color_from_slice(&color[item_len..item_len * 2])?, | ||
| color_from_slice(&color[item_len * 2..])?, | ||
| ))) | ||
| } | ||
|
|
||
| pub fn parse_number(input: &[u8]) -> Option<u8> { | ||
| if input.is_empty() { | ||
| return None; | ||
| } | ||
| let mut num: u8 = 0; | ||
| for c in input { | ||
| let c = *c as char; | ||
| if let Some(digit) = c.to_digit(10) { | ||
| num = match num.checked_mul(10).and_then(|v| v.checked_add(digit as u8)) { | ||
| Some(v) => v, | ||
| None => return None, | ||
| } | ||
| } else { | ||
| return None; | ||
| } | ||
| } | ||
| Some(num) | ||
| } | ||
|
|
||
| // these functions are copied verbatim (with slight modifications) from alacritty, mainly in order | ||
| // to be able to use the VTE API provided by their great package of the same name more easily | ||
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