102 lines
2.3 KiB
Rust
102 lines
2.3 KiB
Rust
use std::{
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fmt, fs,
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io::{self, Read, Seek, SeekFrom},
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path::PathBuf,
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};
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use log::warn;
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use serde::{Deserialize, Serialize};
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use super::{Chunk, FileTrait};
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#[derive(Serialize, Deserialize)]
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pub struct Uploading {
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path: PathBuf,
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size: u64,
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patch_uri: String,
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last_offset: Option<u64>,
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offset: u64,
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}
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impl fmt::Debug for Uploading {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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write!(
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f,
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"Uploading {:?} ({}/{})",
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self.path.display(),
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self.offset,
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self.size
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)
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}
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}
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impl Uploading {
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pub(super) fn new(path: PathBuf, size: u64, patch_uri: String) -> Self {
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Self {
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path,
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size,
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patch_uri,
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last_offset: None,
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offset: 0,
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}
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}
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pub fn get_offset(&self) -> u64 {
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self.offset
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}
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pub fn rewind(self) -> Option<Self> {
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match self.last_offset {
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Some(last_offset) => Some(Self {
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last_offset: None,
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offset: last_offset,
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..self
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}),
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None => {
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warn!("attempted to rewind twice");
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None
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}
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}
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}
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pub fn read<'t>(&mut self, buf: &'t mut [u8]) -> io::Result<Chunk<'t>> {
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let mut f = fs::File::open(&self.path)?;
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f.seek(SeekFrom::Start(self.offset))?;
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let read_len = f.read(buf)?;
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if read_len == 0 {
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return Err(io::Error::new(
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io::ErrorKind::UnexpectedEof,
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format!("could not read from file {:?}", self.path.display()),
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));
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}
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let chunk = Chunk::new(&buf[..read_len], self.patch_uri.clone(), self.offset);
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self.last_offset = Some(self.offset);
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self.offset += chunk.get_length();
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Ok(chunk)
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}
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pub fn check_eof(self) -> Result<Self, PathBuf> {
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if self.offset < self.size {
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Ok(self)
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} else {
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Err(self.path)
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}
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}
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}
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impl<'t> FileTrait<'t> for Uploading {
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/// get a reference to the file's name
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///
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/// Uses `SharryFile::extract_file_name`, which may **panic**!
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fn get_name(&'t self) -> &'t str {
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<Self as FileTrait>::extract_file_name(&self.path)
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}
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fn get_size(&self) -> u64 {
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self.size
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}
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}
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