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use std::collections::BTreeMap;
use std::fs::{File, read_dir};
use std::io::{Error, ErrorKind, Result};
use std::path::Path;
use Sha384;
/// A manifest of build artifacts
#[derive(Clone, Debug, Eq, PartialEq, Deserialize, Serialize)]
pub struct Manifest {
/// The timestamp of the source control revision
pub time: u64,
/// A dictionary of filenames and their hashes
pub files: BTreeMap<String, String>,
}
impl Manifest {
/// Create a new Manifest by reading the provided build directory
///
/// # Arguments
///
/// * `time` - the timestamp of the source control revision that was built
/// * `path` - the directory containing the build artifacts
///
/// # Return
///
/// The Manifest of the provided build data
///
/// # Errors
///
/// Errors that are encountered while reading will be returned
pub fn new<P: AsRef<Path>>(time: u64, path: P) -> Result<Manifest> {
let mut files = BTreeMap::new();
for entry_res in read_dir(path.as_ref())? {
let entry = entry_res?;
let name = entry.file_name().into_string().map_err(|_| {
Error::new(ErrorKind::InvalidData, "Filename is not UTF-8")
})?;
let file = File::open(entry.path())?;
let sha = Sha384::new(file)?;
files.insert(name, sha.to_base32());
}
Ok(Manifest {
time: time,
files: files,
})
}
}