initial commit

src/zpatch.rs

@@ -0,0 +1,24 @@
+use crate::zdiff::Zdiff;
+use crate::zpatch;
+use std::fs;
+use std::io::Write;
+use std::path::Path;
+
+pub async fn create_tmp_dir(dir_name: String) -> Result<String, std::io::Error> {
+    let name = format!("{}.tmp", dir_name);
+    fs::remove_dir_all(name.clone()).map_err(|_| std::io::ErrorKind::NotFound)?;
+    fs::DirBuilder::new().create(name.clone())?;
+    Ok(name)
+}
+
+pub async fn extract_files(zdiff: &Zdiff, filename: &String) -> Result<String, std::io::Error> {
+    let tmp_dir_name = create_tmp_dir(filename.to_string()).await?;
+    let path = Path::new(&tmp_dir_name);
+    fs::remove_dir_all(path)?;
+    for (f, c) in zdiff.content.iter() {
+        let filepath = path.join(f);
+        fs::create_dir_all(filepath.parent().unwrap())?;
+        fs::File::create(&filepath)?.write_all(c)?;
+    }
+    Ok(tmp_dir_name)
+}