aarty/src/args.rs

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Rust
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pub mod args {
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use clap::{Parser, arg, ColorChoice};
use super::enums::*;
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#[derive(Parser, Debug)]
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#[command(author, version, about, long_about=None, color=ColorChoice::Always)]
pub struct Arguments {
/// The art mode to use
#[arg(short, long, default_value="normal-ascii")]
pub mode: Mode,
#[arg(long, default_value="stdout", alias="mo")]
pub output_method: OutputMethod,
/// The image to convert to ASCII art
pub image: String,
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/// The character to use for drawing the image (lighter to darker)
/// You can user one character if you uses the color mode
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#[arg(short, long, default_value=" .,-~!;:=*&%$@#")]
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pub characters: String,
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/// The output scale (1 is the original size)
#[arg(short, long, default_value="4")]
pub scale: u32,
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/// The output file to write to (if output_method is file)
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#[arg(short, long, default_value="ascii_image.txt")]
pub output: String,
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}
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impl Arguments {
pub fn validate(&self) -> Result<(), String> {
if self.characters.len() == 0 {
return Err("No characters provided".to_string());
} else if self.characters.len() == 1 {
if self.mode == Mode::NormalAscii {
return Err("One character provided but mode is normal-ascii".to_string());
}
} else if self.characters.len() > 32 {
return Err("Too many characters provided, max is 32".to_string());
}
Ok(())
}
}
}
pub mod enums {
use clap::ValueEnum;
#[derive(Copy, Clone, ValueEnum, Debug, PartialOrd, Eq, PartialEq)]
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pub enum Mode {
/// Normal ASCII art
#[clap(alias = "n")]
NormalAscii,
/// Colored ASCII art, the colors are based on the terminal colors
#[clap(alias = "c")]
COLORED,
}
#[derive(Copy, Clone, ValueEnum, Debug, PartialOrd, Eq, PartialEq)]
pub enum OutputMethod {
/// Save the ascii art to a file
#[clap(alias = "f")]
File,
/// Print the ascii art to the terminal
#[clap(alias = "s")]
Stdout,
}
}