forked from AbleOS/ableos
50 lines
911 B
Rust
50 lines
911 B
Rust
use crate::device_interface::CharacterDevice;
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#[derive(Debug)]
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pub struct DevUnicode {
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pub next_write_char: char,
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pub next_read_char: char,
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}
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impl CharacterDevice for DevUnicode {
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fn can_read(&self) -> bool {
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true
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}
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fn can_write(&self) -> bool {
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true
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}
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fn read_char(&mut self) -> Option<char> {
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let c = self.next_read_char;
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self.next_read_char = add1_char(c);
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Some(c)
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}
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fn write_char(&mut self, c: char) -> bool {
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if self.next_write_char != c {
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return false;
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}
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true
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}
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fn reset(&mut self) {
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self.next_write_char = 0x00 as char;
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self.next_read_char = 0x00 as char;
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}
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fn initialize(&mut self) -> bool {
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true
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}
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}
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fn add1_char(c: char) -> char {
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if c == char::MAX {
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return 0x00 as char;
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}
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char::from_u32(c as u32 + 1).unwrap()
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}
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