~iptq/garbage

deb48ee51144f372754514450e8ed3a75c8b15be — Michael Zhang 2 years ago
initial
10 files changed, 828 insertions(+), 0 deletions(-)

A .editorconfig
A .gitignore
A Cargo.lock
A Cargo.toml
A README.md
A src/errors.rs
A src/main.rs
A src/ops.rs
A src/trashdir.rs
A src/trashinfo.rs
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@@ 1,9 @@
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@@ 1,2 @@
/target
**/*.rs.bk

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"checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
"checksum walkdir 2.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "c7904a7e2bb3cdf0cf5e783f44204a85a37a93151738fa349f06680f59a98b45"
"checksum winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "f10e386af2b13e47c89e7236a7a14a086791a2b88ebad6df9bf42040195cf770"
"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
"checksum winapi-util 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7168bab6e1daee33b4557efd0e95d5ca70a03706d39fa5f3fe7a236f584b03c9"
"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
"checksum wincolor 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "561ed901ae465d6185fa7864d63fbd5720d0ef718366c9a4dc83cf6170d7e9ba"
"checksum xdg 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d089681aa106a86fade1b0128fb5daf07d5867a509ab036d99988dec80429a57"

A  => Cargo.toml +15 -0
@@ 1,15 @@
[package]
name = "trash"
version = "0.1.0"
authors = ["Michael Zhang <iptq@protonmail.com>"]
edition = "2018"

[dependencies]
chrono = "0.4"
env_logger = "0.6"
lazy_static = "1.0"
log = "0.4"
regex = "1.1"
structopt = "0.2"
walkdir = "2.2"
xdg = "2.2"

A  => README.md +25 -0
@@ 1,25 @@
trash-cli
=========

rust ver of trash-cli, basic functionality is in, code is probably shit

full free-desktop compliance when

Usage
-----

```
$ trash put [-r] file1 file2 ...

$ trash restore
[..interactive]

$ trash list
```

About
-----

Author: Michael Zhang

License: MIT

A  => src/errors.rs +32 -0
@@ 1,32 @@
#[derive(Debug)]
pub enum Error {
    Io(std::io::Error),
    WalkDir(walkdir::Error),
    BadTrashInfo(TrashInfoError),
    ParseDate(chrono::format::ParseError),
}

#[derive(Debug)]
pub enum TrashInfoError {
    MissingHeader,
    MissingPath,
    MissingDate,
}

impl From<std::io::Error> for Error {
    fn from(err: std::io::Error) -> Self {
        Error::Io(err)
    }
}

impl From<walkdir::Error> for Error {
    fn from(err: walkdir::Error) -> Self {
        Error::WalkDir(err)
    }
}

impl From<chrono::format::ParseError> for Error {
    fn from(err: chrono::format::ParseError) -> Self {
        Error::ParseDate(err)
    }
}

A  => src/main.rs +111 -0
@@ 1,111 @@
#[macro_use]
extern crate lazy_static;
#[macro_use]
extern crate log;

mod errors;
mod ops;
mod trashdir;
mod trashinfo;

use std::fs;
use std::io;
use std::path::PathBuf;

use structopt::StructOpt;
use xdg::BaseDirectories;

use crate::trashdir::TrashDir;

lazy_static! {
    static ref XDG: BaseDirectories = BaseDirectories::new().unwrap();
}

#[derive(StructOpt)]
enum Command {
    #[structopt(name = "empty")]
    Empty,

    #[structopt(name = "list")]
    List,

    #[structopt(name = "put")]
    Put {
        /// The target path to be trashed
        #[structopt(parse(from_os_str))]
        paths: Vec<PathBuf>,

        /// Trashes directories recursively
        #[structopt(long = "recursive", short = "r")]
        recursive: bool,
    },

    #[structopt(name = "restore")]
    Restore,
}

fn main() {
    env_logger::init();

    let cmd = Command::from_args();
    match cmd {
        Command::Empty => {
            println!("TODO");
        }
        Command::List => {
            let home_trash = TrashDir::get_home_trash();
            for info in home_trash.iter() {
                let info = match info {
                    Ok(info) => info,
                    Err(err) => {
                        warn!("failed to get file info: {:?}", err);
                        continue;
                    }
                };
                println!("{}\t{}", info.deletion_date, info.path.to_str().unwrap());
            }
        }
        Command::Put { paths, recursive } => {
            for path in paths {
                match crate::ops::put(path, recursive) {
                    Ok(_) => (),
                    Err(err) => error!("error: {:?}", err),
                }
            }
        }
        Command::Restore => {
            let home_trash = TrashDir::get_home_trash();
            let files = home_trash
                .iter()
                .filter_map(|entry| match entry {
                    Ok(info) => Some(info),
                    Err(err) => {
                        warn!("failed to get file info: {:?}", err);
                        None
                    }
                })
                .collect::<Vec<_>>();
            for (i, info) in files.iter().enumerate() {
                println!(
                    "[{}]\t{}\t{}",
                    i,
                    info.deletion_date,
                    info.path.to_str().unwrap()
                );
            }

            let stdin = io::stdin();
            let mut s = String::new();
            println!("which file to restore? [0..{}]", files.len());
            stdin.read_line(&mut s).unwrap();

            match s.trim_end().parse::<usize>() {
                Ok(i) if i < files.len() => {
                    let info = files.get(i).unwrap();
                    fs::rename(&info.deleted_path, &info.path);
                }
                _ => println!("Invalid number."),
            }
        }
    }
}

A  => src/ops.rs +43 -0
@@ 1,43 @@
use std::fs::{self, File};
use std::path::Path;

use chrono::Local;

use crate::errors::Error;
use crate::trashdir::TrashDir;
use crate::trashinfo::TrashInfo;

pub fn put(path: impl AsRef<Path>, recursive: bool) -> Result<(), Error> {
    let path = path.as_ref().canonicalize()?;
    if path.is_dir() && !recursive {
        error!("cannot trash directories without --recursive");
        return Ok(());
    }

    let now = Local::now();
    let elapsed = now.timestamp_millis();

    let home_trash = TrashDir::get_home_trash();
    let file_name = format!(
        "{}.{}.trashinfo",
        elapsed,
        path.file_name().unwrap().to_str().unwrap()
    );

    let trash_file_path = home_trash.files_dir()?.join(&file_name);
    let trash_info_path = home_trash.info_dir()?.join(&file_name);

    let trash_info = TrashInfo {
        path: path.clone(),
        deletion_date: now,
        deleted_path: trash_file_path.clone(),
    };
    {
        let trash_info_file = File::create(trash_info_path)?;
        trash_info.write(&trash_info_file)?;
    }

    fs::rename(path, trash_file_path)?;

    Ok(())
}

A  => src/trashdir.rs +73 -0
@@ 1,73 @@
use std::fs;
use std::path::PathBuf;

use walkdir::{DirEntry, WalkDir};

use crate::errors::Error;
use crate::trashinfo::TrashInfo;
use crate::XDG;

#[derive(Debug)]
pub struct TrashDir(PathBuf);

impl TrashDir {
    pub fn get_home_trash() -> Self {
        TrashDir(XDG.get_data_home().join("Trash"))
    }

    pub fn files_dir(&self) -> Result<PathBuf, Error> {
        let target = self.0.join("files");
        if !target.exists() {
            fs::create_dir_all(&target)?;
        }
        Ok(target)
    }

    pub fn info_dir(&self) -> Result<PathBuf, Error> {
        let target = self.0.join("info");
        if !target.exists() {
            fs::create_dir_all(&target)?;
        }
        Ok(target)
    }

    pub fn iter(&self) -> TrashDirIter {
        let iter = WalkDir::new(&self.0.join("info"))
        .contents_first(true)
            .into_iter()
            .filter_entry(|entry| {
                // warn!("path: {:?}", entry.path());
                match entry.path().extension() {
                    Some(x) => x == "trashinfo",
                    _ => false,
                }
            });
        TrashDirIter(Box::new(iter))
    }
}

pub struct TrashDirIter(Box<Iterator<Item = walkdir::Result<DirEntry>>>);

impl Iterator for TrashDirIter {
    type Item = Result<TrashInfo, Error>;

    fn next(&mut self) -> Option<Self::Item> {
        let entry = {
            let mut entry;
            loop {
                entry = match self.0.next() {
                    Some(Ok(entry)) => entry,
                    Some(Err(err)) => return Some(Err(Error::from(err))),
                    None => return None,
                };
                if entry.path().is_dir() {
                    continue;
                }
                break;
            }
            entry
        };

        Some(TrashInfo::from_file(entry.path()).map_err(Error::from))
    }
}

A  => src/trashinfo.rs +91 -0
@@ 1,91 @@
use std::fs::File;
use std::io::{self, BufRead, BufReader, Write};
use std::path::{Path, PathBuf};

use chrono::{DateTime, Local, TimeZone};
use regex::Regex;

use crate::errors::{Error, TrashInfoError};

lazy_static! {
    static ref KEY_VALUE_PATTERN: Regex = Regex::new(r"([A-Za-z]+)\s*=\s*(.*)").unwrap();
}

const DATE_FORMAT: &str = "%Y-%m-%dT%H:%M:%S";

#[derive(Debug)]
pub struct TrashInfo {
    pub path: PathBuf,
    pub deletion_date: DateTime<Local>,
    pub deleted_path: PathBuf,
}

impl TrashInfo {
    pub fn from_file(path: impl AsRef<Path>) -> Result<Self, Error> {
        let path = path.as_ref();
        let original_path = path.to_path_buf();
        let file = File::open(path)?;
        let reader = BufReader::new(file);

        let mut path = None;
        let mut deletion_date = None;

        for (i, line) in reader.lines().enumerate() {
            let line = line?;

            // first line must be "[Trash Info]"
            if i == 0 && line != "[Trash Info]" {
                return Err(Error::BadTrashInfo(TrashInfoError::MissingHeader));
            }

            // look for path and deletion date
            let captures = match KEY_VALUE_PATTERN.captures(&line) {
                Some(captures) => captures,
                None => continue,
            };

            // safe to unwrap because the parser confirmed their existence
            let key = captures.get(1).unwrap().as_str();
            let value = captures.get(2).unwrap().as_str();

            match key {
                "Path" => {
                    let value = PathBuf::from(value);
                    path = Some(value)
                }
                "DeletionDate" => {
                    let date = Local.datetime_from_str(value, DATE_FORMAT)?;
                    deletion_date = Some(date)
                }
                _ => continue,
            }
        }

        let path = match path {
            Some(path) => path,
            None => return Err(Error::BadTrashInfo(TrashInfoError::MissingPath)),
        };

        let deletion_date = match deletion_date {
            Some(deletion_date) => deletion_date,
            None => return Err(Error::BadTrashInfo(TrashInfoError::MissingDate)),
        };

        Ok(TrashInfo {
            path,
            deletion_date,
            deleted_path: original_path,
        })
    }

    pub fn write(&self, mut out: impl Write) -> Result<(), io::Error> {
        out.write(b"[Trash Info]\n")?;
        write!(out, "Path={}\n", self.path.to_str().unwrap())?;
        write!(
            out,
            "DeletionDate={}\n",
            self.deletion_date.format(DATE_FORMAT)
        )?;
        Ok(())
    }
}