exemplify_lib/layers/domain/
reader_stream.rs

1
2use std::io::Read;
3
4use std::pin::Pin;
5
6
7use futures::{Stream, StreamExt};
8
9
10use crate::layers::domain::reader_factory::{ReaderFactory, ReaderContext};
11
12pub fn reader_stream<Reader: Read + 'static>(
13    reader_factory: Box<dyn ReaderFactory<Reader>>,
14    file_path_stream: Pin<Box<dyn Stream<Item=Result<String, String>>>>) -> Pin<Box<dyn Stream<Item=Result<ReaderContext<Reader>, String>>>> {
15    Box::pin(file_path_stream.map(move |path| {
16        match path {
17            Err(e) => Err(e),
18            Ok(path) => reader_factory.make_reader(path)
19        }
20    }))
21}