55 lines
1.8 KiB
Rust
55 lines
1.8 KiB
Rust
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use std::io::{Write, Result as IoResult};
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/// Controlling terminals.
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pub trait TermControl {
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/// Print the CSI (control sequence introducer) followed by a byte string.
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fn csi(&mut self, b: &[u8]) -> IoResult<usize>;
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/// Print OSC (operating system command) followed by a byte string.
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fn osc(&mut self, b: &[u8]) -> IoResult<usize>;
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/// Print OSC (device control string) followed by a byte string.
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fn dsc(&mut self, b: &[u8]) -> IoResult<usize>;
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/// Clear the terminal.
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fn clear(&mut self) -> IoResult<usize> {
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self.csi(b"2J")
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}
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/// Show the cursor.
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fn show(&mut self) -> IoResult<usize> {
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self.csi(b"?25h")
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}
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/// Hide the cursor.
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fn hide(&mut self) -> IoResult<usize> {
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self.csi(b"?25l")
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}
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/// Reset the style of the cursor.
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fn reset_style(&mut self) -> IoResult<usize> {
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self.csi(b"m")
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}
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/// Go to a given position.
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fn goto(&mut self, x: u16, y: u16) -> IoResult<usize> {
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self.csi(&[
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(x / 10000 % 10) as u8, (x / 1000 % 10) as u8, (x / 100 % 10) as u8, (x / 10 % 10) as u8, (x % 10) as u8,
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b';',
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(y / 10000 % 10) as u8, (y / 1000 % 10) as u8, (y / 100 % 10) as u8, (y / 10 % 10) as u8, (y % 10) as u8,
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b'H',
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])
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}
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}
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impl<W: Write> TermControl for W {
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fn csi(&mut self, b: &[u8]) -> IoResult<usize> {
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self.write(b"\x1b[").and_then(|x| {
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self.write(b).map(|y| x + y)
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})
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}
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fn osc(&mut self, b: &[u8]) -> IoResult<usize> {
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self.write(b"\x1b]").and_then(|x| {
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self.write(b).map(|y| x + y)
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})
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}
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fn dsc(&mut self, b: &[u8]) -> IoResult<usize> {
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self.write(b"\x1bP").and_then(|x| {
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self.write(b).map(|y| x + y)
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})
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}
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}
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