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|
use tui::style::{Color, Style};
use crate::utils::error;
pub const FIRST_COLOUR: Color = Color::LightMagenta;
pub const SECOND_COLOUR: Color = Color::LightYellow;
pub const THIRD_COLOUR: Color = Color::LightCyan;
pub const FOURTH_COLOUR: Color = Color::LightGreen;
pub const HIGHLIGHT_COLOUR: Color = Color::LightBlue;
pub const AVG_COLOUR: Color = Color::Red;
pub const ALL_COLOUR: Color = Color::Green;
fn convert_hex_to_color(hex: &str) -> error::Result<Color> {
fn hex_err(hex: &str) -> error::Result<u8> {
Err(
error::BottomError::ConfigError(format!(
"\"{}\" is an invalid hex colour. It must be a valid 7 character hex string of the (ie: \"#112233\")."
, hex))
)
}
fn convert_hex_to_rgb(hex: &str) -> error::Result<(u8, u8, u8)> {
let hex_components: Vec<char> = hex.chars().collect();
if hex_components.len() == 7 {
let mut r_string = hex_components[1].to_string();
r_string.push(hex_components[2]);
let mut g_string = hex_components[3].to_string();
g_string.push(hex_components[4]);
let mut b_string = hex_components[5].to_string();
b_string.push(hex_components[6]);
let r = u8::from_str_radix(&r_string, 16).or_else(|_err| hex_err(hex))?;
let g = u8::from_str_radix(&g_string, 16).or_else(|_err| hex_err(hex))?;
let b = u8::from_str_radix(&b_string, 16).or_else(|_err| hex_err(hex))?;
return Ok((r, g, b));
}
Err(error::BottomError::ConfigError(format!(
"\"{}\" is an invalid hex colour. It must be a 7 character string of the form \"#112233\".",
hex
)))
}
let rgb = convert_hex_to_rgb(hex)?;
Ok(Color::Rgb(rgb.0, rgb.1, rgb.2))
}
pub fn str_to_fg(input_val: &str) -> error::Result<Style> {
Ok(Style::default().fg(str_to_colour(input_val)?))
}
pub fn str_to_colour(input_val: &str) -> error::Result<Color> {
if input_val.len() > 1 {
if input_val.starts_with('#') {
convert_hex_to_color(input_val)
} else if input_val.contains(',') {
convert_rgb_to_color(input_val)
} else {
convert_name_to_color(input_val)
}
} else {
Err(error::BottomError::ConfigError(format!(
"value \"{}\" is not valid.",
input_val
)))
}
}
fn convert_rgb_to_color(rgb_str: &str) -> error::Result<Color> {
let rgb_list = rgb_str.split(',').collect::<Vec<&str>>();
if rgb_list.len() != 3 {
return Err(error::BottomError::ConfigError(format!(
"value \"{}\" is an invalid RGB colour. It must be a comma separated value with 3 integers from 0 to 255 (ie: \"255, 0, 155\").",
rgb_str
)));
}
let rgb = rgb_list
.iter()
.filter_map(|val| {
if let Ok(res) = (*(*val)).to_string().trim().parse::<u8>() {
Some(res)
} else {
None
}
})
.collect::<Vec<_>>();
if rgb.len() == 3 {
Ok(Color::Rgb(rgb[0], rgb[1], rgb[2]))
} else {
Err(error::BottomError::ConfigError(format!(
"value \"{}\" contained invalid RGB values. It must be a comma separated value with 3 integers from 0 to 255 (ie: \"255, 0, 155\").",
rgb_str
)))
}
}
fn convert_name_to_color(color_name: &str) -> error::Result<Color> {
match color_name.to_lowercase().trim() {
"reset" => Ok(Color::Reset),
"black" => Ok(Color::Black),
"red" => Ok(Color::Red),
"green" => Ok(Color::Green),
"yellow" => Ok(Color::Yellow),
"blue" => Ok(Color::Blue),
"magenta" => Ok(Color::Magenta),
"cyan" => Ok(Color::Cyan),
"gray" | "grey" => Ok(Color::Gray),
"darkgray" | "darkgrey" | "dark gray" | "dark grey" => Ok(Color::DarkGray),
"lightred" | "light red" => Ok(Color::LightRed),
"lightgreen" | "light green" => Ok(Color::LightGreen),
"lightyellow" | "light yellow" => Ok(Color::LightYellow),
"lightblue" | "light blue" => Ok(Color::LightBlue),
"lightmagenta" | "light magenta" => Ok(Color::LightMagenta),
"lightcyan" | "light cyan" => Ok(Color::LightCyan),
"white" => Ok(Color::White),
_ => Err(error::BottomError::ConfigError(format!(
"\"{}\" is an invalid named colour.
The following are supported strings:
+--------+-------------+---------------------+
| Reset | Magenta | Light Yellow |
+--------+-------------+---------------------+
| Black | Cyan | Light Blue |
+--------+-------------+---------------------+
| Red | Gray/Grey | Light Magenta |
+--------+-------------+---------------------+
| Green | Light Cyan | Dark Gray/Dark Grey |
+--------+-------------+---------------------+
| Yellow | Light Red | White |
+--------+-------------+---------------------+
| Blue | Light Green | |
+--------+-------------+---------------------+
",
color_name
))),
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_invalid_colours() {
// Test invalid spacing in single word.
assert!(convert_name_to_color("bl ack").is_err());
// Test invalid spacing in dual word.
assert!(convert_name_to_color("darkg ray").is_err());
// Test completely invalid colour.
assert!(convert_name_to_color("darkreset").is_err());
}
#[test]
fn test_valid_colours() {
// Standard color should work
assert_eq!(convert_name_to_color("red"), Ok(Color::Red));
// Capitalizing should be fine.
assert_eq!(convert_name_to_color("RED"), Ok(Color::Red));
// Spacing shouldn't be an issue now.
assert_eq!(convert_name_to_color(" red "), Ok(Color::Red));
// The following are all equivalent.
assert_eq!(convert_name_to_color("darkgray"), Ok(Color::DarkGray));
assert_eq!(convert_name_to_color("darkgrey"), Ok(Color::DarkGray));
assert_eq!(convert_name_to_color("dark grey"), Ok(Color::DarkGray));
assert_eq!(convert_name_to_color("dark gray"), Ok(Color::DarkGray));
assert_eq!(convert_name_to_color("grey"), Ok(Color::Gray));
assert_eq!(convert_name_to_color("gray"), Ok(Color::Gray));
// One more test with spacing.
assert_eq!(
convert_name_to_color(" lightmagenta "),
Ok(Color::LightMagenta)
);
assert_eq!(
convert_name_to_color("light magenta"),
Ok(Color::LightMagenta)
);
assert_eq!(
convert_name_to_color(" light magenta "),
Ok(Color::LightMagenta)
);
}
}
|
