58 lines
1.2 KiB
Rust
58 lines
1.2 KiB
Rust
use crate::Position;
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use crate::Row;
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use std::fs;
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#[derive(Default)]
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pub struct Document {
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rows: Vec<Row>,
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pub file_name: Option<String>,
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}
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impl Document {
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pub fn open(filename: &str) -> Result<Self, std::io::Error> {
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let contents = fs::read_to_string(filename)?;
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let mut rows = Vec::new();
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for value in contents.lines() {
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rows.push(Row::from(value));
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}
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Ok(Self {
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rows,
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file_name: Some(filename.to_string()),
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})
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}
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pub fn row(&self, index: usize) -> Option<&Row> {
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self.rows.get(index)
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}
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pub fn is_empty(&self) -> bool {
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self.rows.is_empty()
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}
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pub fn len(&self) -> usize {
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self.rows.len()
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}
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pub fn insert(&mut self, at: &Position, c: char) {
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if at.y == self.len() {
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let mut row = Row::default();
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row.insert(0, c);
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self.rows.push(row);
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} else if at.y < self.len() {
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let row = self.rows.get_mut(at.y).unwrap();
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row.insert(at.x, c);
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}
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}
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pub fn delete(&mut self, at: &Position) {
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if at.y >= self.len() {
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return
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}
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let row = self.rows.get_mut(at.y).unwrap();
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row.delete(at.x);
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}
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} |