implemented parallel functionality! 0u0

This commit is contained in:
Lynne Megido 2021-02-05 22:45:51 +10:00
parent 775fb306ad
commit 2c4a8f6a3b
Signed by: lynnesbian
GPG key ID: F0A184B5213D9F90
4 changed files with 479 additions and 42 deletions

362
Cargo.lock generated
View file

@ -15,6 +15,26 @@ version = "0.5.2"
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@ -38,6 +58,40 @@ version = "1.2.1"
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@ -62,8 +116,9 @@ dependencies = [
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"termcolor", "termcolor",
"terminal_size",
"textwrap", "textwrap",
"unicode-width", "unicode-width",
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@ -82,6 +137,93 @@ dependencies = [
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@ -103,6 +245,12 @@ dependencies = [
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@ -116,19 +264,128 @@ dependencies = [
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@ -176,6 +433,12 @@ version = "2.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -226,6 +489,15 @@ version = "2.3.4"
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@ -253,6 +525,16 @@ dependencies = [
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] ]
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@ -265,6 +547,18 @@ version = "2.4.0"
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@ -289,6 +583,18 @@ dependencies = [
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] ]
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@ -307,6 +613,31 @@ dependencies = [
"proc-macro2", "proc-macro2",
] ]
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]
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@ -359,6 +690,18 @@ dependencies = [
"winapi-util", "winapi-util",
] ]
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@ -374,6 +717,12 @@ version = "1.1.0"
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@ -400,12 +749,23 @@ dependencies = [
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dependencies = [ dependencies = [
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] ]

View file

@ -8,11 +8,15 @@ license = "GPL-3.0-or-later"
[dependencies] [dependencies]
walkdir = "2.3.1" walkdir = "2.3.1"
#structopt = "0.3.21"
clap = "3.0.0-beta.2"
log = "0.4.14" log = "0.4.14"
env_logger = "0.8.2" env_logger = "0.8.2"
smartstring = "0.2.6" smartstring = "0.2.6"
# use git version while waiting on a release incorporating https://github.com/ebassi/xdg-mime-rs/commit/de5a6dd # use git version while waiting on a release incorporating https://github.com/ebassi/xdg-mime-rs/commit/de5a6dd
xdg-mime = {git = "https://github.com/ebassi/xdg-mime-rs", version = "0.3"} xdg-mime = {git = "https://github.com/ebassi/xdg-mime-rs", version = "0.3"}
mime_guess = "2.0.3" mime_guess = "2.0.3"
rayon = "1.5.0"
cached = "0.23.0"
[dependencies.clap]
version = "3.0.0-beta.2"
features = ["wrap_help"]

View file

@ -1,28 +1,36 @@
// use xdg_mime::SharedMimeInfo; use xdg_mime::SharedMimeInfo;
// use std::path::Path; use std::path::Path;
// use std::io; use std::io;
// use mime_guess::Mime; use mime_guess::Mime;
// use std::fs::File; use std::fs::File;
// use std::io::Read; use std::io::Read;
use smartstring::alias::String;
use cached::proc_macro::cached;
// pub fn mime_type(db: &SharedMimeInfo, filepath: &Path) -> io::Result<Option<Mime>, > { pub fn mime_type(db: &SharedMimeInfo, path: &Path) -> io::Result<Option<Mime>, > {
// // attempt to read up to the 256 bytes of the file // attempt to read up to the 256 bytes of the file
// let mut buffer = [0; 256]; let mut buffer = [0; 256];
// let mut file = File::open(filepath)?; let mut file = File::open(path)?;
//
// file.read(&mut buffer)?;
//
// Ok(db.get_mime_type_for_data(&buffer).map(|m| m.0))
// }
// pub fn get_ext_from_mime(mime: &Mime) -> Option<String> { // this can be ignored because it's perfectly okay if the file is less than 256 bytes long - we only care about the
// match mime_guess::get_mime_extensions(mime) // get a list of possible extensions for this mime type // first few bytes for the purpose of mime sniffing
// .map(|g| g[0]) { // take the first option in the list and return it as a string #[allow(clippy::unused_io_amount)]
// // jpeg files are given the primary extension "jpe", due to the extension list being stored in alphabetical order. file.read(&mut buffer)?;
// // to handle this particular case, swap "jpe" out for "jpg", and leave everything else the same, making sure we
// // convert the &strs to Strings. Ok(db.get_mime_type_for_data(&buffer).map(|m| m.0))
// Some("jpe") => Some(String::from("jpg")), }
// Some(ext) => Some(String::from(ext)),
// None => None #[cached]
// } // TODO: avoid cloning mime if possible, although i don't really see how it would be - maybe instead of passing the mime
// } // object, pass a hash of it?
pub fn mime_extension_lookup(mime: Mime) -> Option<Vec<String>> {
if mime == mime_guess::mime::IMAGE_JPEG {
// jpeg files are given the primary extension "jpe", due to the extension list being stored in alphabetical order.
// to handle this particular case, return a custom vector consisting of just "jpg" and "jpeg".
return Some(vec![String::from("jpg"), String::from("jpeg")]);
}
match mime_guess::get_mime_extensions(&mime) { // get a list of possible extensions for this mime type
Some(exts) => Some(exts.iter().map(|e| String::from(*e)).collect()),
None => None
}
}

View file

@ -17,12 +17,26 @@
mod parameters; mod parameters;
mod inspectors; mod inspectors;
use std::path::{Path}; use std::path::{Path, PathBuf};
use walkdir::{WalkDir, DirEntry}; use walkdir::{WalkDir, DirEntry};
use smartstring::alias::String; use smartstring::alias::String;
// use structopt::StructOpt;
use clap::Clap; use clap::Clap;
use log::{info}; use log::{debug, info, warn, error};
use rayon::prelude::*;
use mime_guess::Mime;
struct Findings {
file: PathBuf,
valid: bool,
mime: Mime,
}
impl Findings {
fn recommended_extension(&self) -> Option<String> {
inspectors::mime_extension_lookup(self.mime.clone())
.map(|extensions| extensions[0].to_owned())
}
}
// TODO: test if this actually works on a windows machine // TODO: test if this actually works on a windows machine
#[cfg(windows)] #[cfg(windows)]
@ -52,35 +66,86 @@ fn wanted_file(args: &parameters::Parameters, entry: &DirEntry) -> bool {
return true; return true;
} }
let ext = Path::new(entry.file_name()) // create a Path from the entry... let ext = extension_from_path(entry.path());
.extension() // get its extension...
.map(|e| String::from(e.to_string_lossy())); // and convert it from an OsStr to a String.
if ext.is_none() { return false } // don't scan files without extensions. TODO - this should be configurable if ext.is_none() { return false } // don't scan files without extensions. TODO - this should be configurable
if let Some(extensions) = &args.extensions { if let Some(extensions) = &args.extensions {
// if the user has specified a list of extensions to check against, make sure this file ends in one of them. // if the user has specified a list of extensions to check against, make sure this file ends in one of them.
// TODO - maybe use ascii_lowercase instead? return extensions.contains(&ext.unwrap().to_lowercase().into())
return extensions.contains(&ext.unwrap().to_ascii_lowercase().into())
} }
true true
} }
fn extension_from_path(path: &Path) -> Option<String> {
path.extension(). // Get the path's extension
map(|e| String::from(e.to_string_lossy())) // Convert from OsStr to String
}
fn main() { fn main() {
let args = parameters::Parameters::parse(); let args = parameters::Parameters::parse();
// env_logger::init(); env_logger::init();
let db = xdg_mime::SharedMimeInfo::new(); let db = xdg_mime::SharedMimeInfo::new();
println!("{:#?}", args); debug!("=====\nIterating directory: {:?}\n=====", args.dirs);
// println!("{:#?}", args.dirs);
println!("=====\nIterating directory: {:?}\n=====", args.dirs);
let stepper = WalkDir::new(&args.dirs).into_iter(); let stepper = WalkDir::new(&args.dirs).into_iter();
let entries: Vec<DirEntry> = stepper let entries: Vec<DirEntry> = stepper
.filter_entry(|e| wanted_file(&args, e)) // filter out unwanted files .filter_entry(|e| wanted_file(&args, e)) // filter out unwanted files
.filter_map(|e| e.ok()) // ignore anything that fails, e.g. files we don't have read access on .filter_map(|e| e.ok()) // ignore anything that fails, e.g. files we don't have read access on
.filter(|e| !e.file_type().is_dir()) // remove directories from the final list
.collect(); .collect();
info!("Found {} items to check", entries.len()); info!("Found {} items to check", entries.len());
// println!("{:#?}", entries); let results: Vec<Result<Findings, PathBuf>> = entries
.par_iter()
.map(|entry: &DirEntry | {
// try to determine mimetype for this entry
let result = inspectors::mime_type(&db, entry.path());
if let Err(error) = result {
// an error occurred while trying to read the file
error!("{}: {}", entry.path().to_string_lossy(), error);
return Err(entry.path().to_path_buf());
}
let result = result.unwrap();
if result.is_none() {
// the file was read successfully, but we were unable to determine its mimetype
warn!("Couldn't determine mimetype for {}", entry.path().to_string_lossy());
return Err(entry.path().to_path_buf());
}
let result = result.unwrap();
// set of known extensions for the given mimetype
let known_exts = inspectors::mime_extension_lookup(result.clone());
// file extension for this particular file
let entry_ext = extension_from_path(entry.path());
let valid = match known_exts {
// there is a known set of extensions for this mimetype, and the file has an extension
Some(e) if entry_ext.is_some() => e.contains(&entry_ext.unwrap().to_lowercase().into()),
// there is a known set of extensions for this mimetype, but the file has no extension
Some(_) => false,
// there is no known set of extensions for this mimetype -- assume it's correct
None => true
};
Ok(Findings {
file: entry.path().to_path_buf(),
valid, // make this a function
mime: result,
})
})
.collect();
for result in results {
match result {
Ok(r) => info!("{:#?}: {:#?} - {:?} - {:?}", r.file, r.mime, r.valid, r.recommended_extension()),
Err(f) => warn!("{:#?}: Error 0uo", f)
}
}
debug!("Done");
} }