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|
use crate::config::InvalidColorError;
/// Represents a color.
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
#[allow(clippy::exhaustive_enums)]
pub(crate) enum Color {
/// The default terminal color.
Default,
/// The standard white color.
LightWhite,
/// The standard black color.
LightBlack,
/// The standard blue color.
LightBlue,
/// The standard cyan color.
LightCyan,
/// The standard green color.
LightGreen,
/// The standard magenta color.
LightMagenta,
/// The standard red color.
LightRed,
/// The standard yellow color.
LightYellow,
/// The standard grey color.
LightGrey,
/// The dimmed white color.
DarkWhite,
/// The dimmed black color.
DarkBlack,
/// The dimmed blue color.
DarkBlue,
/// The dimmed cyan color.
DarkCyan,
/// The dimmed green color.
DarkGreen,
/// The dimmed magenta color.
DarkMagenta,
/// The dimmed red color.
DarkRed,
/// The dimmed yellow color.
DarkYellow,
/// The dimmed grey color.
DarkGrey,
/// An ANSI indexed color.
Index(u8),
/// A RGB color triple.
Rgb {
/// The red amount of the triple.
red: u8,
/// The green amount of the triple.
green: u8,
/// The blue amount of the triple.
blue: u8,
},
}
impl TryFrom<&str> for Color {
type Error = InvalidColorError;
#[allow(clippy::unwrap_in_result)]
fn try_from(s: &str) -> Result<Self, Self::Error> {
match s {
"black" | "light black" => Ok(Self::LightBlack),
"blue" | "light blue" => Ok(Self::LightBlue),
"cyan" | "light cyan" => Ok(Self::LightCyan),
"green" | "light green" => Ok(Self::LightGreen),
"magenta" | "light magenta" => Ok(Self::LightMagenta),
"red" | "light red" => Ok(Self::LightRed),
"white" | "light white" => Ok(Self::LightWhite),
"yellow" | "light yellow" => Ok(Self::LightYellow),
"grey" | "light grey" => Ok(Self::LightGrey),
"dark black" => Ok(Self::DarkBlack),
"dark blue" => Ok(Self::DarkBlue),
"dark cyan" => Ok(Self::DarkCyan),
"dark green" => Ok(Self::DarkGreen),
"dark magenta" => Ok(Self::DarkMagenta),
"dark red" => Ok(Self::DarkRed),
"dark white" => Ok(Self::DarkWhite),
"dark yellow" => Ok(Self::DarkYellow),
"dark grey" => Ok(Self::DarkGrey),
"transparent" | "-1" => Ok(Self::Default),
_ => {
let matches: Vec<&str> = s.split(',').collect();
match matches.len() {
1 => {
let color_index = s.parse::<u8>();
match color_index {
Ok(i) if (0..=255).contains(&i) => Ok(Self::Index(i)),
_ => Err(InvalidColorError::Indexed {}),
}
},
3 => {
let red = matches[0].parse::<i16>().unwrap_or(-1);
let green = matches[1].parse::<i16>().unwrap_or(-1);
let blue = matches[2].parse::<i16>().unwrap_or(-1);
if !(0..=255).contains(&red) {
return Err(InvalidColorError::Red {});
}
if !(0..=255).contains(&green) {
return Err(InvalidColorError::Green {});
}
if !(0..=255).contains(&blue) {
return Err(InvalidColorError::Blue {});
}
Ok(Self::Rgb {
red: red.try_into().unwrap(),
green: green.try_into().unwrap(),
blue: blue.try_into().unwrap(),
})
},
_ => Err(InvalidColorError::Invalid {}),
}
},
}
}
}
#[cfg(test)]
mod tests {
use claims::assert_ok_eq;
use rstest::rstest;
use testutils::assert_err_eq;
use super::*;
#[rstest]
#[case::named_black("black", Color::LightBlack)]
#[case::named_light_black("light black", Color::LightBlack)]
#[case::named_dark_black("dark black", Color::DarkBlack)]
#[case::named_blue("blue", Color::LightBlue)]
#[case::named_light_blue("light blue", Color::LightBlue)]
#[case::named_dark_blue("dark blue", Color::DarkBlue)]
#[case::named_cyan("cyan", Color::LightCyan)]
#[case::named_light_cyan("light cyan", Color::LightCyan)]
#[case::named_dark_cyan("dark cyan", Color::DarkCyan)]
#[case::named_green("green", Color::LightGreen)]
#[case::named_light_green("light green", Color::LightGreen)]
#[case::named_dark_green("dark green", Color::DarkGreen)]
#[case::named_magenta("magenta", Color::LightMagenta)]
#[case::named_light_magenta("light magenta", Color::LightMagenta)]
#[case::named_dark_magenta("dark magenta", Color::DarkMagenta)]
#[case::named_red("red", Color::LightRed)]
#[case::named_light_red("light red", Color::LightRed)]
#[case::named_dark_red("dark red", Color::DarkRed)]
#[case::named_white("white", Color::LightWhite)]
#[case::named_yellow("yellow", Color::LightYellow)]
#[case::named_light_yellow("light yellow", Color::LightYellow)]
#[case::named_dark_yellow("dark yellow", Color::DarkYellow)]
#[case::index_0("0", Color::Index(0))]
#[case::index_255("255", Color::Index(255))]
#[case::rgb("100,101,102", Color::Rgb {
red: 100,
green: 101,
blue: 102
})]
fn try_from(#[case] color_string: &str, #[case] expected: Color) {
assert_ok_eq!(Color::try_from(color_string), expected);
}
#[rstest]
#[case::non_number_red("red,0,0", InvalidColorError::Red {})]
#[case::rgb_non_number_green("0,green,0", InvalidColorError::Green {})]
#[case::rgb_non_number_blue("0,0,blue", InvalidColorError::Blue {})]
#[case::rgb_non_number_red_lower_limit("-1,0,0", InvalidColorError::Red {})]
#[case::rgb_non_number_green_lower_limit("0,-1,0", InvalidColorError::Green {})]
#[case::rgb_non_number_blue_lower_limit("0,0,-1", InvalidColorError::Blue {})]
#[case::rgb_non_number_red_upper_limit("256,0,0", InvalidColorError::Red {})]
#[case::rgb_non_number_green_upper_limit("0,256,0", InvalidColorError::Green {})]
#[case::rgb_non_number_blue_upper_limit("0,0,256", InvalidColorError::Blue {})]
#[case::index_upper_limit("256", InvalidColorError::Indexed {})]
#[case::index_lower_limit("-2", InvalidColorError::Indexed {})]
#[case::str_single_value("invalid", InvalidColorError::Indexed {})]
#[case::str_multiple_value("invalid,invalid", InvalidColorError::Invalid {})]
fn color_try_from_fail(#[case] color_string: &str, #[case] expected: InvalidColorError) {
assert_err_eq!(Color::try_from(color_string), expected);
}
}
|
