39 lines
1.2 KiB
Rust
39 lines
1.2 KiB
Rust
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use crate::lox_context;
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use chrono::prelude::*;
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use std::{
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env,
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error::Error,
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fs::{DirEntry, File},
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io::BufReader,
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path::Path,
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};
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pub fn read_context_from_file<P: AsRef<Path>>(
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path: P,
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) -> Result<lox_context::LoxServerContext, Box<dyn Error>> {
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let file = File::open(path)?;
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let reader = BufReader::new(file);
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let context = serde_json::from_reader(reader)?;
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Ok(context)
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}
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pub fn write_context_to_file(context: lox_context::LoxServerContext) {
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let mut date = Local::now().format("%Y-%m-%d_%H:%M:%S").to_string();
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let path = "_lox.json";
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date.push_str(path);
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let file = File::create(&date).expect("Unable to write to file!");
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let _ = serde_json::to_writer(file, &context);
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}
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pub fn check_db_exists() -> Option<DirEntry> {
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let current_path = env::current_dir().expect("Unable to access current dir");
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std::fs::read_dir(current_path)
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.expect("Couldn't read local directory")
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.flatten() // Remove failed
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.filter(|f| {
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f.metadata().unwrap().is_file()
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&& (f.file_name().into_string().unwrap().contains("_lox.json"))
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}) // Filter out directories (only consider files)
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.max_by_key(|x| x.metadata().unwrap().modified().unwrap())
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}
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