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Use a cache of the changed file

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This commit is contained in:
Gwilym Kuiper 2021-10-18 20:21:22 +01:00
parent eb26a21629
commit 8a109afee4
1 changed files with 20 additions and 4 deletions
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24
agb-sound-converter/src/lib.rs
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@ -3,6 +3,7 @@ use proc_macro::TokenStream;
use quote::quote;
use siphasher::sip::SipHasher;
use std::{
fs,
fs::File,
hash::{Hash, Hasher},
io::Write,
@ -38,11 +39,26 @@ pub fn include_wav(input: TokenStream) -> TokenStream {
let out_file_path = Path::new(&out_dir).with_file_name(&out_filename);
let mut out_file = File::create(&out_file_path).expect("Failed to open file for writing");
let out_file_mtime = fs::metadata(&out_file_path)
.and_then(|metadata| metadata.modified())
.ok();
let in_file_mtime = fs::metadata(&path)
.and_then(|metadata| metadata.modified())
.ok();
out_file
.write_all(&samples.collect::<Vec<_>>())
.expect("Failed to write to temporary file");
let should_write = match (out_file_mtime, in_file_mtime) {
(Some(out_file_mtime), Some(in_file_mtime)) => out_file_mtime <= in_file_mtime,
_ => true,
};
if should_write {
let mut out_file =
File::create(&out_file_path).expect("Failed to open file for writing");
out_file
.write_all(&samples.collect::<Vec<_>>())
.expect("Failed to write to temporary file");
}
out_file_path
}