initial commit

work
Avril 4 years ago
commit 6b7af42bd9
Signed by: flanchan
GPG Key ID: 284488987C31F630

2
.gitignore vendored

@ -0,0 +1,2 @@
/target
*~

428
Cargo.lock generated

@ -0,0 +1,428 @@
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@ -0,0 +1,23 @@
[package]
name = "videl"
version = "0.1.0"
authors = ["Avril <flanchan@cumallover.me>"]
edition = "2018"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[features]
default = ["threads"]
# Enable working on files in parallel
threads = ["tokio/rt-threaded"]
# Use base64 encoding of pathnames instead of SHA256. This can increase speed of database rebuilding, but can also cause files with large pathnames to fail.
fast_pathnames = ["base64"]
[dependencies]
tokio = {version = "0.2", features=["full"]}
base64 = {version = "0.12", optional = true}
cfg-if = "0.1.10"
sha2 = "0.9.1"

@ -0,0 +1,8 @@
# Versioning Delete
Moves files to /tmp/ instead of deleting, with versioning and undelete capability.
# Delete marker method
* Encode full path to `/tmp/videl`, and make as new directory `$dir`
* Save full path in `$dir/metadata`
* Move file to `$dir/$(get unix timestamp)`

@ -0,0 +1 @@
//! Handles building the database, and exposes data structures for the database and ways to interact with them

@ -0,0 +1,62 @@
//! Extensions
use std::{
fmt::{
Write as _,
},
};
pub struct HexSlice<'a>(&'a [u8]);
impl<'a> HexSlice<'a>
{
#[inline] pub fn new<T>(from: &'a T) -> Self
where T: AsRef<[u8]> + ?Sized + 'a
{
Self(from.as_ref())
}
pub fn to_hex_string(&self) -> String
{
let mut output = String::with_capacity(self.0.len()*2);
write!(output, "{}", self).unwrap();
output
}
}
impl std::fmt::Display for HexSlice<'_>
{
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result
{
for byte in self.0.iter()
{
write!(f, "{:02x}", byte)?;
}
Ok(())
}
}
pub trait HexSliceExt
{
fn as_hex(&self) -> HexSlice<'_>;
}
impl<T> HexSliceExt for T
where T: AsRef<[u8]>
{
#[inline] fn as_hex(&self) -> HexSlice<'_>
{
HexSlice(self.as_ref())
}
}
impl AsRef<[u8]> for HexSlice<'_>
{
fn as_ref(&self) -> &[u8]
{
self.0
}
}

@ -0,0 +1,29 @@
#![allow(dead_code)]
use cfg_if::cfg_if;
mod ext;
use ext::*;
mod metadata;
mod resolve;
mod database;
async fn begin() -> Result<i32, Box<dyn std::error::Error>>
{
Ok(0)
}
#[tokio::main]
async fn main() {
std::process::exit(match begin().await {
Ok(0) => return,
Err(err) => {
eprintln!("\nexited with error: {}", err);
1
},
Ok(v) => v
})
}

@ -0,0 +1,8 @@
//! Abstraction over the metadata file
//!
//! This module contains the data structures and functions to
//!* Create metadata files
//!* Load metadata files into memory
//!* Inspect and mutate metadata
//!* Validate metadata
//!* Save metadata files to disk

@ -0,0 +1,59 @@
//! Resolution
//!
//! Pathname and filename encodings and such
use super::*;
use std::{
path::{
Path,
},
io::{
self,
},
os::unix::ffi::OsStrExt as _, //idc about windows
marker::Unpin,
};
use tokio::{
prelude::*,
io::AsyncWrite,
};
#[cfg(not(feature="fast_pathnames"))]
use sha2::{
Sha256, Digest,
};
/// Encode a pathname to an output buffer
///
/// # Notes
/// This only gets the final part of the encoded pathname. You should prepend the parent afterwards.
pub async fn encode_pathname_to<P: AsRef<Path>, W: AsyncWrite+Unpin>(from: P, mut to: W) -> io::Result<usize>
{
let string = encode_pathname(from);
to.write_all(string.as_bytes()).await?;
Ok(string.len())
}
/// Encode a pathname to a string
///
/// # Notes
/// This only gets the final part of the encoded pathname. You should prepend the parent afterwards.
pub fn encode_pathname<P: AsRef<Path>>(from: P) -> String
{
cfg_if! {
if #[cfg(feature="fast_pathnames")] {
base64::encode(from.as_ref().as_os_str().as_bytes())
} else {
let mut hasher = Sha256::new();
hasher.update(from.as_ref().as_os_str().as_bytes());
hasher.finalize().as_hex().to_hex_string()
}
}
}
//TODO: `deocode_pathname`. Takes input pathname (the full encoded one), and either:
// - fast_pathnames: Decodes the final part into the pathname
// - not(fast_pathnames): Looks in `metadata` to find the correct pathname, and validates the hash
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