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use lazy_static::lazy_static;
use std::{collections::BTreeMap, sync::Arc};
use anstyle::{Ansi256Color, AnsiColor, Color, RgbColor, Style};
use regex::Regex;
use zellij_tile::prelude::bail;
use crate::{config::ZellijState, widgets::widget::Widget};
lazy_static! {
static ref WIDGET_REGEX: Regex = Regex::new("(\\{[a-z_0-9]+\\})").unwrap();
}
#[derive(Clone, Debug, PartialEq)]
pub struct FormattedPart {
pub fg: Option<Color>,
pub bg: Option<Color>,
pub bold: bool,
pub italic: bool,
pub content: String,
}
impl FormattedPart {
pub fn multiple_from_format_string(config: String) -> Vec<Self> {
config
.split("#[")
.map(|c| FormattedPart::from_format_string(c.to_string()))
.collect()
}
pub fn from_format_string(format: String) -> Self {
let format = match format.starts_with("#[") {
true => format.strip_prefix("#[").unwrap().to_string(),
false => format,
};
let mut result = FormattedPart::default();
let format_content_split = format.split(']');
if format_content_split.clone().count() == 1 {
result.content = format;
return result;
}
let mut format_content_split = format_content_split.collect::<Vec<&str>>();
let parts = format_content_split[0].split(',');
format_content_split.remove(0);
result.content = format_content_split.join("]");
for part in parts {
if part.starts_with("fg=") {
result.fg = parse_color(part.strip_prefix("fg=").unwrap());
}
if part.starts_with("bg=") {
result.bg = parse_color(part.strip_prefix("bg=").unwrap());
}
if part.eq("bold") {
result.bold = true;
}
if part.eq("italic") {
result.italic = true;
}
}
result
}
pub fn format_string(&self, text: &str) -> String {
let mut style = Style::new();
style = style.fg_color(self.fg);
style = style.bg_color(self.bg);
if self.italic {
style = style.italic();
}
if self.bold {
style = style.bold();
}
format!(
"{}{}{}{}",
style.render_reset(),
style.render(),
text,
style.render_reset()
)
}
pub fn format_string_with_widgets(
&self,
widgets: &BTreeMap<String, Arc<dyn Widget>>,
state: &ZellijState,
) -> String {
let mut output = self.content.clone();
for widget in WIDGET_REGEX.captures_iter(&self.content) {
let match_name = widget.get(0).unwrap().as_str();
let mut widget_key = match_name.trim_matches(|c| c == '{' || c == '}');
if widget_key.starts_with("command_") {
widget_key = "command";
}
let result = match widgets.get(widget_key) {
Some(widget) => widget.process(
match_name.trim_matches(|c| c == '{' || c == '}'),
state,
),
None => "Use of uninitialized widget".to_string(),
};
output = output.replace(match_name, &result);
}
self.format_string(&output)
}
}
impl Default for FormattedPart {
fn default() -> Self {
Self {
fg: None,
bg: None,
bold: false,
italic: false,
content: "".to_string(),
}
}
}
fn hex_to_rgb(s: &str) -> anyhow::Result<Vec<u8>> {
if s.len() != 6 {
bail!("wrong hex color length");
}
(0..s.len())
.step_by(2)
.map(|i| u8::from_str_radix(&s[i..i + 2], 16).map_err(anyhow::Error::from))
.collect()
}
fn parse_color(color: &str) -> Option<Color> {
if color.starts_with('#') {
let rgb = match hex_to_rgb(color.strip_prefix('#').unwrap()) {
Ok(rgb) => rgb,
Err(_) => return None,
};
if rgb.len() != 3 {
return None;
}
return Some(
RgbColor(
*rgb.first().unwrap(),
*rgb.get(1).unwrap(),
*rgb.get(2).unwrap(),
)
.into(),
);
}
if let Some(color) = color_by_name(color) {
return Some(color.into());
}
if let Ok(result) = color.parse::<u8>() {
return Some(Ansi256Color(result).into());
}
None
}
fn color_by_name(color: &str) -> Option<AnsiColor> {
match color {
"black" => Some(AnsiColor::Black),
"red" => Some(AnsiColor::Red),
"green" => Some(AnsiColor::Green),
"yellow" => Some(AnsiColor::Yellow),
"blue" => Some(AnsiColor::Blue),
"magenta" => Some(AnsiColor::Magenta),
"cyan" => Some(AnsiColor::Cyan),
"white" => Some(AnsiColor::White),
_ => None,
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_hex_to_rgb() {
let result = hex_to_rgb("010203");
let expected = Vec::from([1, 2, 3]);
assert!(result.is_ok());
assert_eq!(result.unwrap(), expected);
}
#[test]
fn test_hex_to_rgb_with_invalid_input() {
let result = hex_to_rgb("#010203");
assert!(result.is_err());
let result = hex_to_rgb(" 010203");
assert!(result.is_err());
let result = hex_to_rgb("010");
assert!(result.is_err());
}
#[test]
fn test_parse_color() {
let result = parse_color("#010203");
let expected = RgbColor(1, 2, 3);
assert_eq!(result, Some(expected.into()));
let result = parse_color("255");
let expected = Ansi256Color(255);
assert_eq!(result, Some(expected.into()));
let result = parse_color("365");
assert_eq!(result, None);
let result = parse_color("#365");
assert_eq!(result, None);
}
}
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