140 lines
4.1 KiB
Rust
140 lines
4.1 KiB
Rust
/*
|
|
* meli - mailbox module.
|
|
*
|
|
* Copyright 2017 Manos Pitsidianakis
|
|
*
|
|
* This file is part of meli.
|
|
*
|
|
* meli is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* meli is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with meli. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
use mailbox::email::Mail;
|
|
use error::{MeliError, Result};
|
|
use mailbox::backends::MailBackend;
|
|
|
|
extern crate crossbeam;
|
|
use std::path::PathBuf;
|
|
|
|
|
|
pub struct MaildirType {
|
|
path: String,
|
|
}
|
|
|
|
impl MailBackend for MaildirType {
|
|
fn get(&self) -> Result<Vec<Mail>> {
|
|
self.get_multicore(4)
|
|
/*
|
|
|
|
MaildirType::is_valid(&self.path)?;
|
|
let mut path = PathBuf::from(&self.path);
|
|
path.push("cur");
|
|
let iter = path.read_dir()?;
|
|
let count = path.read_dir()?.count();
|
|
let mut r = Vec::with_capacity(count);
|
|
for e in iter {
|
|
//eprintln!("{:?}", e);
|
|
let e = e.and_then(|x| {
|
|
let path = x.path();
|
|
Ok(path.to_str().unwrap().to_string())
|
|
})?;
|
|
match Mail::from(&e) {
|
|
Some(e) => {r.push(e);},
|
|
None => {}
|
|
}
|
|
}
|
|
Ok(r)
|
|
*/
|
|
}
|
|
}
|
|
|
|
impl MaildirType {
|
|
pub fn new(path: &str) -> Self {
|
|
MaildirType {
|
|
path: path.to_string()
|
|
}
|
|
}
|
|
fn is_valid(path: &str) -> Result<()> {
|
|
let mut p = PathBuf::from(path);
|
|
for d in &["cur", "new", "tmp"] {
|
|
p.push(d);
|
|
if !p.is_dir() {
|
|
return Err(MeliError::new(format!("{} is not a valid maildir folder", path)));
|
|
}
|
|
p.pop();
|
|
}
|
|
Ok(())
|
|
}
|
|
pub fn get_multicore(&self, cores: usize) -> Result<Vec<Mail>> {
|
|
MaildirType::is_valid(&self.path)?;
|
|
let mut path = PathBuf::from(&self.path);
|
|
path.push("cur");
|
|
let iter = path.read_dir()?;
|
|
let count = path.read_dir()?.count();
|
|
let mut files: Vec<String> = Vec::with_capacity(count);
|
|
let mut r = Vec::with_capacity(count);
|
|
for e in iter {
|
|
//eprintln!("{:?}", e);
|
|
let e = e.and_then(|x| {
|
|
let path = x.path();
|
|
Ok(path.to_str().unwrap().to_string())
|
|
})?;
|
|
files.push(e);
|
|
/*
|
|
|
|
f.read_to_end(&mut buffer)?;
|
|
eprintln!("{:?}", String::from_utf8(buffer.clone()).unwrap());
|
|
let m = match Email::parse(&buffer) {
|
|
Ok((v, rest)) => match rest.len() {
|
|
0 => v,
|
|
_ =>
|
|
{ eprintln!("{:?}", String::from_utf8(rest.to_vec()).unwrap());
|
|
panic!("didn't parse"); },
|
|
},
|
|
Err(v) => panic!(v),
|
|
};
|
|
|
|
r.push(m);
|
|
*/
|
|
|
|
}
|
|
let mut threads = Vec::with_capacity(cores);
|
|
if !files.is_empty() {
|
|
crossbeam::scope(|scope| {
|
|
let chunk_size = if count / cores > 0 {
|
|
count / cores
|
|
} else {
|
|
count
|
|
};
|
|
for chunk in files.chunks(chunk_size) {
|
|
let s = scope.spawn(move || {
|
|
let mut local_r:Vec<Mail> = Vec::with_capacity(chunk.len());
|
|
for e in chunk {
|
|
if let Some(e) = Mail::from(e) {
|
|
local_r.push(e);
|
|
}
|
|
}
|
|
local_r
|
|
});
|
|
threads.push(s);
|
|
}
|
|
});
|
|
}
|
|
for t in threads {
|
|
let mut result = t.join();
|
|
r.append(&mut result);
|
|
}
|
|
Ok(r)
|
|
}
|
|
}
|