mirror of
https://github.com/denoland/deno.git
synced 2024-12-24 08:09:08 -05:00
84 lines
2.2 KiB
Rust
84 lines
2.2 KiB
Rust
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
|
|
|
|
use deno_core::serde_json;
|
|
use deno_core::serde_json::json;
|
|
use std::collections::BTreeMap;
|
|
use std::io::Result;
|
|
|
|
#[derive(Debug, Clone)]
|
|
pub struct Lockfile {
|
|
write: bool,
|
|
map: BTreeMap<String, String>,
|
|
pub filename: String,
|
|
}
|
|
|
|
impl Lockfile {
|
|
pub fn new(filename: String, write: bool) -> Result<Lockfile> {
|
|
debug!("lockfile \"{}\", write: {}", filename, write);
|
|
|
|
let map = if write {
|
|
BTreeMap::new()
|
|
} else {
|
|
let s = std::fs::read_to_string(&filename)?;
|
|
serde_json::from_str(&s)?
|
|
};
|
|
|
|
Ok(Lockfile {
|
|
write,
|
|
map,
|
|
filename,
|
|
})
|
|
}
|
|
|
|
// Synchronize lock file to disk - noop if --lock-write file is not specified.
|
|
pub fn write(&self) -> Result<()> {
|
|
if !self.write {
|
|
return Ok(());
|
|
}
|
|
// Will perform sort so output is deterministic
|
|
let map: BTreeMap<_, _> = self.map.iter().collect();
|
|
let j = json!(map);
|
|
let s = serde_json::to_string_pretty(&j).unwrap();
|
|
let mut f = std::fs::OpenOptions::new()
|
|
.write(true)
|
|
.create(true)
|
|
.truncate(true)
|
|
.open(&self.filename)?;
|
|
use std::io::Write;
|
|
f.write_all(s.as_bytes())?;
|
|
debug!("lockfile write {}", self.filename);
|
|
Ok(())
|
|
}
|
|
|
|
pub fn check_or_insert(&mut self, specifier: &str, code: &str) -> bool {
|
|
if self.write {
|
|
// In case --lock-write is specified check always passes
|
|
self.insert(specifier, code);
|
|
true
|
|
} else {
|
|
self.check(specifier, code)
|
|
}
|
|
}
|
|
|
|
/// Checks the given module is included.
|
|
/// Returns Ok(true) if check passed.
|
|
fn check(&mut self, specifier: &str, code: &str) -> bool {
|
|
if specifier.starts_with("file:") {
|
|
return true;
|
|
}
|
|
if let Some(lockfile_checksum) = self.map.get(specifier) {
|
|
let compiled_checksum = crate::checksum::gen(&[code.as_bytes()]);
|
|
lockfile_checksum == &compiled_checksum
|
|
} else {
|
|
false
|
|
}
|
|
}
|
|
|
|
fn insert(&mut self, specifier: &str, code: &str) {
|
|
if specifier.starts_with("file:") {
|
|
return;
|
|
}
|
|
let checksum = crate::checksum::gen(&[code.as_bytes()]);
|
|
self.map.insert(specifier.to_string(), checksum);
|
|
}
|
|
}
|