src/devices/system/read_only_text_buffer.rs


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pub struct ReadOnlyTextBuffer {
    chars: Vec<u8>,
    pointer: usize,
}

impl ReadOnlyTextBuffer {
    pub fn from_text(text: &str) -> Self {
        Self {
            chars: text.bytes().collect(),
            pointer: 0,
        }
    }

    pub fn read_byte(&mut self) -> u8 {
        let option = self.chars.get(self.pointer);
        self.pointer += 1;
        *option.unwrap_or(&0)
    }

    pub fn reset_pointer(&mut self) {
        self.pointer = 0;
    }
}