module util import os import crypto.md5 import crypto.sha256 // hash_file returns the md5 & sha256 hash of a given file // TODO actually implement sha256 pub fn hash_file(path &string) ?(string, string) { file := os.open(path) or { return error('Failed to open file.') } mut md5sum := md5.new() mut sha256sum := sha256.new() buf_size := int(1_000_000) mut buf := []byte{len: buf_size} mut bytes_left := os.file_size(path) for bytes_left > 0 { // TODO check if just breaking here is safe bytes_read := file.read(mut buf) or { return error('Failed to read from file.') } bytes_left -= u64(bytes_read) // For now we'll assume that this always works md5sum.write(buf[..bytes_read]) or { return error('Failed to update md5 checksum. This should never happen.') } sha256sum.write(buf[..bytes_read]) or { return error('Failed to update sha256 checksum. This should never happen.') } } return md5sum.checksum().hex(), sha256sum.checksum().hex() }