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pub struct Printer<W: std::io::Write> {
lines: usize,
buffer: String,
writer: W,
}
impl<W> From<W> for Printer<W>
where
W: std::io::Write,
{
fn from(value: W) -> Self {
Self {
lines: 0,
buffer: String::new(),
writer: value,
}
}
}
impl<W: std::io::Write> Printer<W> {
pub fn write(&mut self) -> std::io::Result<&mut Self> {
writeln!(self.writer, "{}", self.buffer)?;
self.writer.flush()?;
self.lines = self.buffer.lines().count() + 1;
self.buffer.clear();
Ok(self)
}
pub fn write_pause(&mut self, prompt: &str) -> std::io::Result<&mut Self> {
use std::io::Read;
self.buffer.push('\n');
self.buffer.push_str(prompt);
self.write()?;
let _ = std::io::stdin().read(&mut [0u8])?;
Ok(self)
}
pub fn write_pause_condition(
&mut self,
prompt: &str,
cond: bool,
) -> std::io::Result<&mut Self> {
if cond {
self.write_pause(prompt)
} else {
self.write()
}
}
pub fn write_sleep(&mut self, time: u64) -> std::io::Result<&mut Self> {
self.write()?;
std::thread::sleep(std::time::Duration::from_millis(time));
Ok(self)
}
pub fn clear(&mut self) -> &mut Self {
self.buffer
.insert_str(0, &"\x1b[1A\x1b[K".repeat(self.lines));
self.lines = 0;
self
}
pub fn with(&mut self, fmt: std::fmt::Arguments) -> &mut Self {
self.buffer.push('\n');
self.buffer.push_str(format!("{}", fmt).as_str());
self
}
pub fn with_grid<T: std::fmt::Display>(&mut self, grid: &[Vec<T>]) -> &mut Self {
let s = grid
.iter()
.flat_map(|row| {
row.iter()
.map(|s| s.to_string())
.chain(std::iter::once("\n".to_string()))
})
.collect::<String>();
self.buffer.push('\n');
self.buffer.push_str(s.as_str());
self
}
pub fn with_grid_path<T: std::fmt::Display>(
&mut self,
grid: &[Vec<T>],
highlight: &[(usize, usize)],
) -> &mut Self {
let s = grid
.iter()
.enumerate()
.flat_map(|(x, row)| {
row.iter()
.enumerate()
.map(move |(y, s)| {
if highlight.contains(&(x, y)) {
format!("\x1b[1;30;42m{s}\x1b[0m")
} else {
s.to_string()
}
})
.chain(std::iter::once("\n".to_string()))
})
.collect::<String>();
self.buffer.push('\n');
self.buffer.push_str(s.as_str());
self
}
}
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