49 lines
1.1 KiB
Rust
49 lines
1.1 KiB
Rust
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use std::{io, mem};
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use super::cvt;
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use super::libc::{c_ushort, ioctl, STDOUT_FILENO};
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#[repr(C)]
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struct TermSize {
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row: c_ushort,
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col: c_ushort,
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_x: c_ushort,
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_y: c_ushort,
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}
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#[cfg(target_os = "linux")]
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pub const TIOCGWINSZ: usize = 0x00005413;
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#[cfg(not(target_os = "linux"))]
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pub const TIOCGWINSZ: usize = 0x40087468;
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// Since attributes on non-item statements is not stable yet, we use a function.
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#[cfg(not(target_os = "android"))]
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#[cfg(not(target_os = "redox"))]
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#[cfg(target_pointer_width = "64")]
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#[cfg(not(target_env = "musl"))]
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fn tiocgwinsz() -> u64 {
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TIOCGWINSZ as u64
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}
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#[cfg(not(target_os = "android"))]
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#[cfg(not(target_os = "redox"))]
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#[cfg(target_pointer_width = "32")]
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#[cfg(not(target_env = "musl"))]
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fn tiocgwinsz() -> u32 {
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TIOCGWINSZ as u32
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}
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#[cfg(any(target_env = "musl", target_os = "android"))]
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fn tiocgwinsz() -> i32 {
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TIOCGWINSZ as i32
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}
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/// Get the size of the terminal.
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pub fn terminal_size() -> io::Result<(u16, u16)> {
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unsafe {
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let mut size: TermSize = mem::zeroed();
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cvt(ioctl(STDOUT_FILENO, tiocgwinsz(), &mut size as *mut _))?;
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Ok((size.col as u16, size.row as u16))
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}
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}
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