You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
35 lines
1.1 KiB
Rust
35 lines
1.1 KiB
Rust
use crate::format::{FileFormat, FileObject};
|
|
use anyhow::{bail, Context};
|
|
use std::fs::File;
|
|
use std::io::BufReader;
|
|
use std::path::Path;
|
|
|
|
pub const XZ_HEADER: &[u8] = &[0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00];
|
|
|
|
pub struct XZFormat;
|
|
|
|
impl FileFormat for XZFormat {
|
|
fn parse(file: &FileObject) -> anyhow::Result<Self> {
|
|
if file.header.starts_with(XZ_HEADER) {
|
|
if !file.ext.ends_with(".xz") && !file.ext.ends_with(".lzma") {
|
|
tracing::warn!("The file has a xz signature but not a xz extension.");
|
|
}
|
|
Ok(Self)
|
|
} else {
|
|
bail!("Not an xz file");
|
|
}
|
|
}
|
|
|
|
fn extract(&self, file: &Path, output: &Path) -> anyhow::Result<()> {
|
|
if output.is_dir() {
|
|
bail!("The given output is a directory");
|
|
}
|
|
let mut reader = BufReader::new(File::open(&file).context("Opening input file")?);
|
|
let mut output = File::create(&output).context("Creating output file")?;
|
|
tracing::debug!("Decompressing file {file:?} to output {output:?}");
|
|
lzma_rs::xz_decompress(&mut reader, &mut output).context("Decompressing file")?;
|
|
|
|
Ok(())
|
|
}
|
|
}
|