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replace read_at with the more portable workaround

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This commit is contained in:
Christof Petig 2023-10-18 22:31:25 +02:00
parent d1158abd6f
commit 252771c411
1 changed files with 8 additions and 6 deletions
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14
common/assets/src/tar_source.rs
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@ -5,8 +5,8 @@ use tar::EntryType;
use std::{
fmt,
fs::File,
hash, io,
os::unix::prelude::FileExt,
hash,
io::{self, Read, Seek, SeekFrom},
path::{self, Path, PathBuf},
};
@ -117,10 +117,12 @@ struct Backend(PathBuf);
impl Backend {
fn read(&self, pos: u64, len: usize) -> std::io::Result<Vec<u8>> {
File::open(self.0.clone()).and_then(|file| {
let mut result = vec![0; len];
file.read_exact_at(result.as_mut_slice(), pos)
.map(move |_num_bytes| result)
File::open(self.0.clone()).and_then(|mut file| {
file.seek(SeekFrom::Start(pos)).and_then(|_| {
let mut result = vec![0; len];
file.read_exact(result.as_mut_slice())
.map(move |_num_bytes| result)
})
})
}
}