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formatter: make Style::fg_color an Option

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We want to be able combine styles by replacing only some of the
attributes (foreground color, underlining, etc.) in the config. We
could implement that having keeping the current style and then update
it based on what we find in the config for a label we just
added. However, it's simpler if we can parse a configured style
without knowing the current style and just return a `Style` with some
fields blank. This commit prepares for that by making the foreground
color field optional.
This commit is contained in:
Martin von Zweigbergk 2023-01-07 08:02:47 -08:00 committed by Martin von Zweigbergk
parent 2080913d15
commit db5dbf3540
1 changed files with 26 additions and 31 deletions
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57
src/formatter.rs
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@ -150,17 +150,9 @@ impl<W: Write> Formatter for PlainTextFormatter<W> {
}
}
#[derive(Clone, Debug, PartialEq, Eq)]
#[derive(Clone, Debug, Default, PartialEq, Eq)]
pub struct Style {
pub fg_color: Color,
}
impl Default for Style {
fn default() -> Self {
Self {
fg_color: Color::Reset,
}
}
pub fg_color: Option<Color>,
}
pub struct ColorFormatter<W> {
@ -239,16 +231,19 @@ impl<W: Write> ColorFormatter<W> {
} else if !is_bright(&new_style.fg_color) && is_bright(&self.current_style.fg_color) {
queue!(self.output, SetAttribute(Attribute::Reset))?;
}
queue!(self.output, SetForegroundColor(new_style.fg_color))?;
queue!(
self.output,
SetForegroundColor(new_style.fg_color.unwrap_or(Color::Reset))
)?;
self.current_style = new_style;
}
Ok(())
}
}
fn is_bright(color: &Color) -> bool {
fn is_bright(color: &Option<Color>) -> bool {
matches!(
color,
color.unwrap_or(Color::Reset),
Color::DarkGrey
| Color::Red
| Color::Green
@ -291,25 +286,25 @@ fn rules_from_config(config: &config::Config) -> HashMap<Vec<String>, Style> {
result
}
fn color_for_name(color_name: &str) -> Color {
fn color_for_name(color_name: &str) -> Option<Color> {
match color_name {
"black" => Color::Black,
"red" => Color::DarkRed,
"green" => Color::DarkGreen,
"yellow" => Color::DarkYellow,
"blue" => Color::DarkBlue,
"magenta" => Color::DarkMagenta,
"cyan" => Color::DarkCyan,
"white" => Color::Grey,
"bright black" => Color::DarkGrey,
"bright red" => Color::Red,
"bright green" => Color::Green,
"bright yellow" => Color::Yellow,
"bright blue" => Color::Blue,
"bright magenta" => Color::Magenta,
"bright cyan" => Color::Cyan,
"bright white" => Color::White,
_ => Color::Reset,
"black" => Some(Color::Black),
"red" => Some(Color::DarkRed),
"green" => Some(Color::DarkGreen),
"yellow" => Some(Color::DarkYellow),
"blue" => Some(Color::DarkBlue),
"magenta" => Some(Color::DarkMagenta),
"cyan" => Some(Color::DarkCyan),
"white" => Some(Color::Grey),
"bright black" => Some(Color::DarkGrey),
"bright red" => Some(Color::Red),
"bright green" => Some(Color::Green),
"bright yellow" => Some(Color::Yellow),
"bright blue" => Some(Color::Blue),
"bright magenta" => Some(Color::Magenta),
"bright cyan" => Some(Color::Cyan),
"bright white" => Some(Color::White),
_ => None,
}
}