gecko-dev/servo/components/net_traits/blob_url_store.rs

63 строки
1.9 KiB
Rust

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use filemanager_thread::FileOrigin;
use servo_url::ServoUrl;
use std::str::FromStr;
use url::Url;
use uuid::Uuid;
/// Errors returned to Blob URL Store request
#[derive(Clone, Debug, Deserialize, Serialize)]
pub enum BlobURLStoreError {
/// Invalid File UUID
InvalidFileID,
/// Invalid URL origin
InvalidOrigin,
/// Invalid entry content
InvalidEntry,
/// External error, from like file system, I/O etc.
External(String),
}
/// Standalone blob buffer object
#[derive(Clone, Debug, Deserialize, Serialize)]
pub struct BlobBuf {
pub filename: Option<String>,
/// MIME type string
pub type_string: String,
/// Size of content in bytes
pub size: u64,
/// Content of blob
pub bytes: Vec<u8>,
}
/// Parse URL as Blob URL scheme's definition
///
/// <https://w3c.github.io/FileAPI/#DefinitionOfScheme>
pub fn parse_blob_url(url: &ServoUrl) -> Result<(Uuid, FileOrigin), ()> {
let url_inner = Url::parse(url.path()).map_err(|_| ())?;
let id = {
let mut segs = url_inner.path_segments().ok_or(())?;
let id = segs.nth(0).ok_or(())?;
Uuid::from_str(id).map_err(|_| ())?
};
Ok((id, get_blob_origin(&ServoUrl::from_url(url_inner))))
}
/// Given an URL, returning the Origin that a Blob created under this
/// URL should have.
///
/// HACK(izgzhen): Not well-specified on spec, and it is a bit a hack
/// both due to ambiguity of spec and that we have to serialization the
/// Origin here.
pub fn get_blob_origin(url: &ServoUrl) -> FileOrigin {
if url.scheme() == "file" {
// NOTE: by default this is "null" (Opaque), which is not ideal
"file://".to_string()
} else {
url.origin().unicode_serialization()
}
}