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#![feature(box_syntax)]
use anyhow::Result;
use blubcat::{
color::Color,
pattern::{Gradient, Rainbow, Sequence, Solid},
transform::{Matrix, Polar, Translate, Transpose},
Sample,
};
use std::{
env,
f64::consts::PI,
fs::File,
io::{stdin, BufRead, BufReader, Read},
process::exit,
};
static HELP: &str = "
Usage: blubcat [OPTION...] [FILE...]
Concatenate FILE(s) to standard output, colorizing the output according to OPTION.
With no FILE, or when FILE is -, the standard input is read.
OPTION can be PATTERN, TRANSFORM or PRESET.
Patterns are stored on a stack.
<pop>,<push> indicates the number of patters popped from the stack and how many are pushed back on.
PATTERN:
0,1 -R --rainbow Sinebow
0,1 -K --const <color> Solid color
0,1 -S --sequence <c1,c2,c3,...> Sequences colors on the X-axis
0,1 -G --gradient <c1,c2,c3,...> Interpolates the colors on the X-axis
TRANSFORM:
1,1 -r --rotate <angle>
1,1 -s --scale <factor>
1,1 -m --matrix <x> <y> <z> <w>
1,1 -t --translate <x> <y>
1,1 -T --transpose
1,1 -p --polar
2,1 --mix
2,1 --add
2,1 --subtract
2,1 --multiply
PRESET:
0,1 --zebra
0,1 --pride --trans
0,1 --ukraine ofc this is needed
COLOR:
<rrggbb>
black white red green blue yellow cyan magenta
";
fn main() -> Result<()> {
let mut args = env::args().skip(1);
let mut arg_extra = None;
let mut pat: Vec<Box<dyn Sample>> = vec![];
loop {
let a = args.next();
let mut arg_next = || args.next();
let mut arg_num = || {
arg_next()
.expect("value expected")
.parse::<f64>()
.expect("not a number")
};
if let Some(a) = a {
if !a.starts_with("-") || a == "--" || a == "-" {
arg_extra = Some(a);
break;
}
let mut push_queue: Vec<Box<dyn Sample>> = vec![];
match a.as_str() {
"-?" | "--help" => {
println!("{}", HELP);
exit(0)
}
/* PRESETS */
"--pride" => pat.push(flag_helper(&[
"e50000", "ff8d00", "ffee00", "028121", "004cff", "770088",
])),
"--zebra" => pat.push(flag_helper(&["000000", "ffffff"])),
"--trans" => pat.push(flag_helper(&[
"5bcffb", "f5abb9", "ffffff", "f5abb9", "5bcffb",
])),
"--ukraine" => pat.push(flag_helper(&["0057B8", "FFD700"])),
/* PATTERNS */
"-R" | "--rainbow" => pat.push(box Rainbow),
"-S" | "--sequence" => pat.push(box Sequence(
arg_next()
.unwrap()
.split(",")
.map(|e| Color::parse(e).expect("color invalid"))
.collect::<Vec<_>>(),
)),
"-G" | "--gradient" => pat.push(box Gradient(
arg_next()
.unwrap()
.split(",")
.map(|e| Color::parse(e).expect("color invalid"))
.collect::<Vec<_>>(),
)),
"-K" | "--const" => pat.push(box Solid(
Color::parse(arg_next().expect("color expected").as_str())
.expect("invalid color"),
)),
/* TRANSFORMS */
"-s" | "--scale" => {
let fac = arg_num();
push_queue.push(box Matrix {
inner: pat.pop().unwrap(),
matrix: ((fac, 0.0), (0.0, fac)),
})
}
"-r" | "--rotate" => {
let angle = arg_num() * PI * 2.0;
push_queue.push(box Matrix {
inner: pat.pop().unwrap(),
matrix: ((angle.cos(), -angle.sin()), (angle.sin(), angle.cos())),
})
}
"-m" | "--matrix" => push_queue.push(box Matrix {
inner: pat.pop().unwrap(),
matrix: ((arg_num(), arg_num()), (arg_num(), arg_num())),
}),
"-p" | "--polar" => push_queue.push(box Polar(pat.pop().unwrap())),
"-t" | "--translate" => {
let (x, y) = (arg_num(), arg_num());
push_queue.push(box Translate {
offset: (x, y),
inner: pat.pop().unwrap(),
})
}
"-T" | "--transpose" => push_queue.push(box Transpose(pat.pop().unwrap())),
_ => panic!("unknown option {}", &a),
}
pat.extend(push_queue.drain(..))
} else {
break;
}
}
let mut inputs = args.collect::<Vec<String>>();
let mut pat = pat.pop().unwrap_or_else(|| box Solid(Color::WHITE));
if let Some(a) = arg_extra {
inputs.insert(0, a)
}
if inputs.len() == 0 {
colorize(stdin(), &mut pat)?
} else {
for f in inputs {
let file = File::open(f)?;
colorize(file, &mut pat)?;
}
}
Ok(())
}
fn flag_helper(colors: &[&str]) -> Box<dyn Sample> {
box Matrix {
matrix: ((1.0 / 12.0, 1.0 / 12.0), (0.0, 0.0)),
inner: box Sequence(
colors
.into_iter()
.map(|e| Color::parse(e).unwrap())
.collect(),
),
}
}
fn colorize(file: impl Read, sampler: &mut Box<dyn Sample>) -> Result<()> {
let mut file = BufReader::new(file);
let mut line = String::new();
for y in 0.. {
if file.read_line(&mut line)? == 0 {
break;
}
for (x, c) in line.chars().enumerate() {
let (r, g, b) = sampler.sample(x as f64, y as f64).as_rgb888();
print!("\x1b[38;2;{r};{g};{b}m{c}")
}
line.clear();
}
Ok(())
}
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