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#![deny(missing_docs)]
use cfg_if::cfg_if;
use std::io::Read;
use tectonic_errors::Result;
use tectonic_status_base::StatusBackend;
pub trait RangeReader {
type Response: Read;
fn read_range(&mut self, offset: u64, length: usize) -> Result<Self::Response>;
}
pub trait GetUrlBackend: Default {
type Response: Read;
type RangeReader: RangeReader;
fn resolve_url(&mut self, url: &str, status: &mut dyn StatusBackend) -> Result<String>;
fn get_url(&mut self, url: &str, status: &mut dyn StatusBackend) -> Result<Self::Response>;
fn open_range_reader(&self, url: &str) -> Self::RangeReader;
}
pub mod null;
#[cfg(feature = "curl")]
pub mod curl;
#[cfg(feature = "reqwest")]
pub mod reqwest;
cfg_if! {
if #[cfg(feature = "reqwest")] {
pub use crate::reqwest::ReqwestBackend as DefaultBackend;
} else if #[cfg(feature = "curl")] {
pub use crate::curl::CurlBackend as DefaultBackend;
} else {
pub use null::NullBackend as DefaultBackend;
}
}
pub type DefaultRangeReader = <DefaultBackend as GetUrlBackend>::RangeReader;