Rocket/lib/src/response/named_file.rs

65 lines
2.0 KiB
Rust

use response::*;
use std::fs::File;
use std::path::{Path, PathBuf};
use response::mime::{Mime, TopLevel, SubLevel};
use std::io;
use std::ops::{Deref, DerefMut};
#[derive(Debug)]
pub struct NamedFile(PathBuf, File);
impl NamedFile {
pub fn open<P: AsRef<Path>>(path: P) -> io::Result<NamedFile> {
let file = File::open(path.as_ref())?;
Ok(NamedFile(path.as_ref().to_path_buf(), file))
}
pub fn path(&self) -> &Path {
self.0.as_path()
}
}
impl Responder for NamedFile {
fn respond<'a>(&mut self, mut res: FreshHyperResponse<'a>) -> Outcome<'a> {
if let Some(ext) = self.path().extension() {
let ext_string = ext.to_string_lossy().to_lowercase();
let (top_level, sub_level) = match ext_string.as_str() {
"txt" => (TopLevel::Text, SubLevel::Plain),
"html" => (TopLevel::Text, SubLevel::Html),
"xml" => (TopLevel::Application, SubLevel::Xml),
"js" => (TopLevel::Application, SubLevel::Javascript),
"css" => (TopLevel::Text, SubLevel::Css),
"json" => (TopLevel::Application, SubLevel::Json),
"png" => (TopLevel::Image, SubLevel::Png),
"gif" => (TopLevel::Image, SubLevel::Gif),
"bmp" => (TopLevel::Image, SubLevel::Bmp),
"jpeg" => (TopLevel::Image, SubLevel::Jpeg),
"jpg" => (TopLevel::Image, SubLevel::Jpeg),
_ => (TopLevel::Star, SubLevel::Star),
};
if top_level != TopLevel::Star && sub_level != SubLevel::Star {
let mime = Mime(top_level, sub_level, vec![]);
res.headers_mut().set(header::ContentType(mime));
}
}
self.1.respond(res)
}
}
impl Deref for NamedFile {
type Target = File;
fn deref(&self) -> &File {
&self.1
}
}
impl DerefMut for NamedFile {
fn deref_mut(&mut self) -> &mut File {
&mut self.1
}
}