505 lines
19 KiB
Rust
505 lines
19 KiB
Rust
use std::fs::{File, Metadata};
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use std::io::prelude::*;
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use std::path::PathBuf;
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use std::time::{Duration, SystemTime, UNIX_EPOCH};
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use std::{fs, thread};
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use crate::common::Common;
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use crate::common_directory::Directories;
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use crate::common_extensions::Extensions;
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use crate::common_items::ExcludedItems;
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use crate::common_messages::Messages;
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use crate::common_traits::*;
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use crossbeam_channel::Receiver;
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use rayon::prelude::*;
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use std::io::BufWriter;
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use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
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use std::sync::Arc;
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use std::thread::sleep;
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#[derive(Debug)]
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pub struct ProgressData {
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pub current_stage: u8,
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pub max_stage: u8,
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pub files_checked: usize,
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pub files_to_check: usize,
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}
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#[derive(Eq, PartialEq, Clone, Debug)]
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pub enum DeleteMethod {
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None,
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Delete,
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}
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#[derive(Clone)]
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pub struct FileEntry {
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pub path: PathBuf,
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pub size: u64,
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pub modified_date: u64,
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}
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/// Info struck with helpful information's about results
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#[derive(Default)]
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pub struct Info {
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pub number_of_zeroed_files: usize,
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pub number_of_removed_files: usize,
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pub number_of_failed_to_remove_files: usize,
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}
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impl Info {
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pub fn new() -> Self {
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Default::default()
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}
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}
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/// Struct with required information's to work
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pub struct ZeroedFiles {
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text_messages: Messages,
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information: Info,
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zeroed_files: Vec<FileEntry>,
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directories: Directories,
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allowed_extensions: Extensions,
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excluded_items: ExcludedItems,
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recursive_search: bool,
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delete_method: DeleteMethod,
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stopped_search: bool,
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minimal_file_size: u64,
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files_to_check: Vec<FileEntry>,
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}
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impl ZeroedFiles {
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pub fn new() -> Self {
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Self {
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text_messages: Messages::new(),
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information: Info::new(),
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recursive_search: true,
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allowed_extensions: Extensions::new(),
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directories: Directories::new(),
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excluded_items: ExcludedItems::new(),
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zeroed_files: vec![],
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delete_method: DeleteMethod::None,
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stopped_search: false,
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minimal_file_size: 1024,
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files_to_check: Vec::with_capacity(1024),
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}
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}
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pub fn find_zeroed_files(&mut self, stop_receiver: Option<&Receiver<()>>, progress_sender: Option<&futures::channel::mpsc::Sender<ProgressData>>) {
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self.directories.optimize_directories(self.recursive_search, &mut self.text_messages);
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if !self.check_files(stop_receiver, progress_sender) {
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self.stopped_search = true;
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return;
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}
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if !self.check_for_zeroed_files(stop_receiver, progress_sender) {
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self.stopped_search = true;
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return;
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}
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self.delete_files();
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self.debug_print();
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}
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pub fn get_stopped_search(&self) -> bool {
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self.stopped_search
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}
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pub const fn get_zeroed_files(&self) -> &Vec<FileEntry> {
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&self.zeroed_files
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}
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pub const fn get_text_messages(&self) -> &Messages {
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&self.text_messages
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}
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pub const fn get_information(&self) -> &Info {
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&self.information
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}
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pub fn set_delete_method(&mut self, delete_method: DeleteMethod) {
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self.delete_method = delete_method;
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}
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pub fn set_minimal_file_size(&mut self, minimal_file_size: u64) {
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self.minimal_file_size = match minimal_file_size {
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0 => 1,
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t => t,
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};
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}
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pub fn set_recursive_search(&mut self, recursive_search: bool) {
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self.recursive_search = recursive_search;
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}
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pub fn set_included_directory(&mut self, included_directory: Vec<PathBuf>) -> bool {
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self.directories.set_included_directory(included_directory, &mut self.text_messages)
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}
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pub fn set_excluded_directory(&mut self, excluded_directory: Vec<PathBuf>) {
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self.directories.set_excluded_directory(excluded_directory, &mut self.text_messages);
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}
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pub fn set_allowed_extensions(&mut self, allowed_extensions: String) {
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self.allowed_extensions.set_allowed_extensions(allowed_extensions, &mut self.text_messages);
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}
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pub fn set_excluded_items(&mut self, excluded_items: Vec<String>) {
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self.excluded_items.set_excluded_items(excluded_items, &mut self.text_messages);
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}
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/// Check files for files which have 0
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fn check_files(&mut self, stop_receiver: Option<&Receiver<()>>, progress_sender: Option<&futures::channel::mpsc::Sender<ProgressData>>) -> bool {
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let start_time: SystemTime = SystemTime::now();
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let mut folders_to_check: Vec<PathBuf> = Vec::with_capacity(1024 * 2); // This should be small enough too not see to big difference and big enough to store most of paths without needing to resize vector
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// Add root folders for finding
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for id in &self.directories.included_directories {
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folders_to_check.push(id.clone());
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}
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//// PROGRESS THREAD START
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const LOOP_DURATION: u32 = 200; //in ms
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let progress_thread_run = Arc::new(AtomicBool::new(true));
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let atomic_file_counter = Arc::new(AtomicUsize::new(0));
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let progress_thread_handle;
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if let Some(progress_sender) = progress_sender {
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let mut progress_send = progress_sender.clone();
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let progress_thread_run = progress_thread_run.clone();
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let atomic_file_counter = atomic_file_counter.clone();
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progress_thread_handle = thread::spawn(move || loop {
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progress_send
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.try_send(ProgressData {
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current_stage: 0,
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max_stage: 1,
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files_checked: atomic_file_counter.load(Ordering::Relaxed) as usize,
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files_to_check: 0,
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})
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.unwrap();
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if !progress_thread_run.load(Ordering::Relaxed) {
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break;
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}
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sleep(Duration::from_millis(LOOP_DURATION as u64));
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});
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} else {
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progress_thread_handle = thread::spawn(|| {});
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}
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//// PROGRESS THREAD END
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while !folders_to_check.is_empty() {
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if stop_receiver.is_some() && stop_receiver.unwrap().try_recv().is_ok() {
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// End thread which send info to gui
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progress_thread_run.store(false, Ordering::Relaxed);
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progress_thread_handle.join().unwrap();
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return false;
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}
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let current_folder = folders_to_check.pop().unwrap();
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// Read current dir, if permission are denied just go to next
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let read_dir = match fs::read_dir(¤t_folder) {
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Ok(t) => t,
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Err(_) => {
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self.text_messages.warnings.push(format!("Cannot open dir {}", current_folder.display()));
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continue;
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} // Permissions denied
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};
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// Check every sub folder/file/link etc.
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'dir: for entry in read_dir {
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let entry_data = match entry {
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Ok(t) => t,
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Err(_) => {
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self.text_messages.warnings.push(format!("Cannot read entry in dir {}", current_folder.display()));
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continue;
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} //Permissions denied
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};
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let metadata: Metadata = match entry_data.metadata() {
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Ok(t) => t,
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Err(_) => {
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self.text_messages.warnings.push(format!("Cannot read metadata in dir {}", current_folder.display()));
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continue;
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} //Permissions denied
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};
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if metadata.is_dir() {
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if !self.recursive_search {
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continue;
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}
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let next_folder = current_folder.join(entry_data.file_name());
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if self.directories.is_excluded(&next_folder) || self.excluded_items.is_excluded(&next_folder) {
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continue 'dir;
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}
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folders_to_check.push(next_folder);
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} else if metadata.is_file() {
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atomic_file_counter.fetch_add(1, Ordering::Relaxed);
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if metadata.len() == 0 || metadata.len() < self.minimal_file_size {
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continue 'dir;
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}
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let file_name_lowercase: String = match entry_data.file_name().into_string() {
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Ok(t) => t,
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Err(_) => continue,
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}
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.to_lowercase();
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// Checking allowed extensions
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if !self.allowed_extensions.file_extensions.is_empty() {
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let allowed = self.allowed_extensions.file_extensions.iter().any(|e| file_name_lowercase.ends_with((".".to_string() + e.to_lowercase().as_str()).as_str()));
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if !allowed {
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// Not an allowed extension, ignore it.
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continue 'dir;
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}
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}
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// Checking files
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let current_file_name = current_folder.join(entry_data.file_name());
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if self.excluded_items.is_excluded(¤t_file_name) {
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continue 'dir;
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}
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// Creating new file entry
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let fe: FileEntry = FileEntry {
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path: current_file_name.clone(),
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size: metadata.len(),
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modified_date: match metadata.modified() {
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Ok(t) => match t.duration_since(UNIX_EPOCH) {
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Ok(d) => d.as_secs(),
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Err(_) => {
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self.text_messages.warnings.push(format!("File {} seems to be modified before Unix Epoch.", current_file_name.display()));
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0
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}
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},
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Err(_) => {
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self.text_messages.warnings.push(format!("Unable to get modification date from file {}", current_file_name.display()));
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continue;
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} // Permissions Denied
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},
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};
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// Adding files to Vector
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self.files_to_check.push(fe);
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}
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}
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}
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// End thread which send info to gui
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progress_thread_run.store(false, Ordering::Relaxed);
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progress_thread_handle.join().unwrap();
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Common::print_time(start_time, SystemTime::now(), "check_files".to_string());
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true
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}
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/// Check files for files which have 0
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fn check_for_zeroed_files(&mut self, stop_receiver: Option<&Receiver<()>>, progress_sender: Option<&futures::channel::mpsc::Sender<ProgressData>>) -> bool {
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let start_time: SystemTime = SystemTime::now();
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//// PROGRESS THREAD START
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const LOOP_DURATION: u32 = 200; //in ms
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let progress_thread_run = Arc::new(AtomicBool::new(true));
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let atomic_file_counter = Arc::new(AtomicUsize::new(0));
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let progress_thread_handle;
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if let Some(progress_sender) = progress_sender {
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let mut progress_send = progress_sender.clone();
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let progress_thread_run = progress_thread_run.clone();
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let atomic_file_counter = atomic_file_counter.clone();
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let files_to_check = self.files_to_check.len();
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progress_thread_handle = thread::spawn(move || loop {
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progress_send
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.try_send(ProgressData {
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current_stage: 1,
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max_stage: 1,
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files_checked: atomic_file_counter.load(Ordering::Relaxed) as usize,
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files_to_check,
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})
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.unwrap();
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if !progress_thread_run.load(Ordering::Relaxed) {
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break;
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}
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sleep(Duration::from_millis(LOOP_DURATION as u64));
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});
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} else {
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progress_thread_handle = thread::spawn(|| {});
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}
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//// PROGRESS THREAD END
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self.zeroed_files = self
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.files_to_check
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.par_iter()
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.map(|file_entry| {
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atomic_file_counter.fetch_add(1, Ordering::Relaxed);
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if stop_receiver.is_some() && stop_receiver.unwrap().try_recv().is_ok() {
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// This will not break
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return None;
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}
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let file_entry = file_entry.clone();
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let mut n;
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let mut file_handler: File = match File::open(&file_entry.path) {
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Ok(t) => t,
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Err(_) => {
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return Some(None);
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}
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};
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// First search
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let mut buffer = [0u8; 64];
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n = match file_handler.read(&mut buffer) {
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Ok(t) => t,
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Err(_) => {
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return Some(None);
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}
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};
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for i in buffer[0..n].iter() {
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if *i != 0 {
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return Some(None);
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}
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}
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// Second search
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loop {
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let mut buffer = [0u8; 1024 * 32];
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n = match file_handler.read(&mut buffer) {
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Ok(t) => t,
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Err(_) => {
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return Some(None);
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}
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};
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for i in buffer[0..n].iter() {
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if *i != 0 {
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return Some(None);
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}
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}
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if n == 0 {
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break;
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}
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}
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Some(Some(file_entry))
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})
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.while_some()
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.filter(|file_entry| file_entry.is_some())
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.map(|file_entry| file_entry.unwrap())
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.collect::<Vec<_>>();
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// End thread which send info to gui
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progress_thread_run.store(false, Ordering::Relaxed);
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progress_thread_handle.join().unwrap();
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self.information.number_of_zeroed_files = self.zeroed_files.len();
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Common::print_time(start_time, SystemTime::now(), "search for zeroed_files".to_string());
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//Clean unused data
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self.files_to_check.clear();
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true
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}
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/// Function to delete files, from filed Vector
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fn delete_files(&mut self) {
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let start_time: SystemTime = SystemTime::now();
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match self.delete_method {
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DeleteMethod::Delete => {
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for file_entry in &self.zeroed_files {
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if fs::remove_file(file_entry.path.clone()).is_err() {
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self.text_messages.warnings.push(file_entry.path.display().to_string());
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}
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}
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}
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DeleteMethod::None => {
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//Just do nothing
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}
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}
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Common::print_time(start_time, SystemTime::now(), "delete_files".to_string());
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}
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}
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impl Default for ZeroedFiles {
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fn default() -> Self {
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Self::new()
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}
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}
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impl DebugPrint for ZeroedFiles {
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#[allow(dead_code)]
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#[allow(unreachable_code)]
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/// Debugging printing - only available on debug build
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fn debug_print(&self) {
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#[cfg(not(debug_assertions))]
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{
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return;
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}
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println!("---------------DEBUG PRINT---------------");
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println!("### Information's");
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println!("Errors size - {}", self.text_messages.errors.len());
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println!("Warnings size - {}", self.text_messages.warnings.len());
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println!("Messages size - {}", self.text_messages.messages.len());
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println!("Number of removed files - {}", self.information.number_of_removed_files);
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println!("Number of failed to remove files - {}", self.information.number_of_failed_to_remove_files);
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println!("### Other");
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println!("Zeroed list size - {}", self.zeroed_files.len());
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println!("Allowed extensions - {:?}", self.allowed_extensions.file_extensions);
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println!("Excluded items - {:?}", self.excluded_items.items);
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println!("Included directories - {:?}", self.directories.included_directories);
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println!("Excluded directories - {:?}", self.directories.excluded_directories);
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println!("Recursive search - {}", self.recursive_search.to_string());
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println!("Delete Method - {:?}", self.delete_method);
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println!("Minimal File Size - {:?}", self.minimal_file_size);
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println!("-----------------------------------------");
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}
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}
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impl SaveResults for ZeroedFiles {
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fn save_results_to_file(&mut self, file_name: &str) -> bool {
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let start_time: SystemTime = SystemTime::now();
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let file_name: String = match file_name {
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"" => "results.txt".to_string(),
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k => k.to_string(),
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};
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let file_handler = match File::create(&file_name) {
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Ok(t) => t,
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Err(_) => {
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self.text_messages.errors.push(format!("Failed to create file {}", file_name));
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return false;
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}
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};
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let mut writer = BufWriter::new(file_handler);
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if writeln!(
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writer,
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"Results of searching {:?} with excluded directories {:?} and excluded items {:?}",
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self.directories.included_directories, self.directories.excluded_directories, self.excluded_items.items
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)
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.is_err()
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{
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self.text_messages.errors.push(format!("Failed to save results to file {}", file_name));
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return false;
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}
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if !self.zeroed_files.is_empty() {
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writeln!(writer, "Found {} zeroed files.", self.information.number_of_zeroed_files).unwrap();
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for file_entry in self.zeroed_files.iter() {
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writeln!(writer, "{}", file_entry.path.display()).unwrap();
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}
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} else {
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write!(writer, "Not found any zeroed files.").unwrap();
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}
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Common::print_time(start_time, SystemTime::now(), "save_results_to_file".to_string());
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true
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}
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}
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impl PrintResults for ZeroedFiles {
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/// Print information's about duplicated entries
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/// Only needed for CLI
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fn print_results(&self) {
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let start_time: SystemTime = SystemTime::now();
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println!("Found {} zeroed files.\n", self.information.number_of_zeroed_files);
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for file_entry in self.zeroed_files.iter() {
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println!("{}", file_entry.path.display());
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}
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Common::print_time(start_time, SystemTime::now(), "print_entries".to_string());
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}
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}
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