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Update state
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parent
06e7216c83
commit
de9a0ed522
1 changed files with 20 additions and 14 deletions
34
src/state.rs
34
src/state.rs
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@ -1,31 +1,37 @@
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use anyhow::{Context, Result};
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use serde::{Deserialize, Serialize};
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use std::{fs, io, path::PathBuf};
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use std::fs;
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#[derive(Serialize, Deserialize)]
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pub struct ExerciseState {
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pub path: PathBuf,
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pub done: bool,
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}
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use crate::exercise::Exercise;
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#[derive(Serialize, Deserialize)]
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pub struct State {
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pub progress: Vec<ExerciseState>,
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pub progress: Vec<bool>,
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}
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impl State {
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pub fn read() -> Result<Self> {
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let file_content =
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fs::read(".rustlings.json").context("Failed to read the file `.rustlings.json`")?;
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fn read(exercises: &[Exercise]) -> Option<Self> {
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let file_content = fs::read(".rustlings.json").ok()?;
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serde_json::de::from_slice(&file_content)
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.context("Failed to deserialize the file `.rustlings.json`")
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let slf: Self = serde_json::de::from_slice(&file_content).ok()?;
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if slf.progress.len() != exercises.len() {
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return None;
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}
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Some(slf)
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}
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pub fn write(&self) -> io::Result<()> {
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pub fn read_or_default(exercises: &[Exercise]) -> Self {
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Self::read(exercises).unwrap_or_else(|| Self {
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progress: vec![false; exercises.len()],
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})
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}
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pub fn write(&self) -> Result<()> {
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// TODO: Capacity
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let mut buf = Vec::with_capacity(1 << 12);
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serde_json::ser::to_writer(&mut buf, self).context("Failed to serialize the state");
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serde_json::ser::to_writer(&mut buf, self).context("Failed to serialize the state")?;
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dbg!(buf.len());
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Ok(())
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}
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