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use humansize ::{ file_size_opts as options , FileSize } ;
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use std ::collections ::{ BTreeMap , HashMap } ;
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use std ::fs ;
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use std ::fs ::{ File , Metadata } ;
use std ::io ::prelude ::* ;
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use std ::time ::{ SystemTime , UNIX_EPOCH } ;
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use crate ::common ::Common ;
use crate ::common_directory ::Directories ;
use crate ::common_extensions ::Extensions ;
use crate ::common_items ::ExcludedItems ;
use crate ::common_messages ::Messages ;
use crate ::common_traits ::* ;
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#[ derive(PartialEq, Eq, Clone, Debug) ]
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pub enum CheckingMethod {
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None ,
Size ,
Hash ,
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}
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#[ derive(Eq, PartialEq, Clone, Debug) ]
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pub enum DeleteMethod {
None ,
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AllExceptNewest ,
AllExceptOldest ,
OneOldest ,
OneNewest ,
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}
#[ derive(Clone) ]
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pub struct FileEntry {
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pub path : String ,
pub size : u64 ,
pub created_date : SystemTime ,
pub modified_date : SystemTime ,
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}
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/// Info struck with helpful information's about results
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pub struct Info {
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pub number_of_checked_files : usize ,
pub number_of_checked_folders : usize ,
pub number_of_ignored_files : usize ,
pub number_of_ignored_things : usize ,
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pub number_of_groups_by_size : usize ,
pub number_of_duplicated_files_by_size : usize ,
pub number_of_groups_by_hash : usize ,
pub number_of_duplicated_files_by_hash : usize ,
pub lost_space_by_size : u64 ,
pub lost_space_by_hash : u64 ,
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pub bytes_read_when_hashing : u64 ,
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pub number_of_removed_files : usize ,
pub number_of_failed_to_remove_files : usize ,
pub gained_space : u64 ,
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}
impl Info {
pub fn new ( ) -> Info {
Info {
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number_of_checked_files : 0 ,
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number_of_ignored_files : 0 ,
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number_of_checked_folders : 0 ,
number_of_ignored_things : 0 ,
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number_of_groups_by_size : 0 ,
number_of_duplicated_files_by_size : 0 ,
number_of_groups_by_hash : 0 ,
number_of_duplicated_files_by_hash : 0 ,
lost_space_by_size : 0 ,
lost_space_by_hash : 0 ,
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bytes_read_when_hashing : 0 ,
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number_of_removed_files : 0 ,
number_of_failed_to_remove_files : 0 ,
gained_space : 0 ,
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}
}
}
impl Default for Info {
fn default ( ) -> Self {
Self ::new ( )
}
}
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/// Struct with required information's to work
pub struct DuplicateFinder {
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text_messages : Messages ,
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information : Info ,
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files_with_identical_size : BTreeMap < u64 , Vec < FileEntry > > ,
files_with_identical_hashes : BTreeMap < u64 , Vec < Vec < FileEntry > > > ,
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directories : Directories ,
allowed_extensions : Extensions ,
excluded_items : ExcludedItems ,
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recursive_search : bool ,
min_file_size : u64 ,
check_method : CheckingMethod ,
delete_method : DeleteMethod ,
}
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impl DuplicateFinder {
pub fn new ( ) -> DuplicateFinder {
DuplicateFinder {
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text_messages : Messages ::new ( ) ,
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information : Info ::new ( ) ,
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files_with_identical_size : Default ::default ( ) ,
files_with_identical_hashes : Default ::default ( ) ,
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recursive_search : true ,
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allowed_extensions : Extensions ::new ( ) ,
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check_method : CheckingMethod ::None ,
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delete_method : DeleteMethod ::None ,
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min_file_size : 1024 ,
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directories : Directories ::new ( ) ,
excluded_items : ExcludedItems ::new ( ) ,
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}
}
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/// Finding duplicates, save results to internal struct variables
pub fn find_duplicates ( & mut self ) {
self . directories . optimize_directories ( self . recursive_search , & mut self . text_messages ) ;
self . check_files_size ( ) ;
if self . check_method = = CheckingMethod ::Hash {
self . check_files_hash ( ) ;
}
self . delete_files ( ) ;
self . debug_print ( ) ;
}
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pub fn get_files_sorted_by_size ( & self ) -> & BTreeMap < u64 , Vec < FileEntry > > {
& self . files_with_identical_size
}
pub fn get_files_sorted_by_hash ( & self ) -> & BTreeMap < u64 , Vec < Vec < FileEntry > > > {
& self . files_with_identical_hashes
}
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pub fn get_text_messages ( & self ) -> & Messages {
& self . text_messages
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}
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pub fn get_information ( & self ) -> & Info {
& self . information
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}
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pub fn set_check_method ( & mut self , check_method : CheckingMethod ) {
self . check_method = check_method ;
}
pub fn set_delete_method ( & mut self , delete_method : DeleteMethod ) {
self . delete_method = delete_method ;
}
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pub fn set_min_file_size ( & mut self , min_size : u64 ) {
self . min_file_size = min_size ;
}
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pub fn set_recursive_search ( & mut self , recursive_search : bool ) {
self . recursive_search = recursive_search ;
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}
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pub fn set_included_directory ( & mut self , included_directory : String ) -> bool {
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 : String ) {
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 ) {
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 : String ) {
self . excluded_items . set_excluded_items ( excluded_items , & mut self . text_messages ) ;
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}
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/// Read file length and puts it to different boxes(each for different lengths)
/// If in box is only 1 result, then it is removed
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fn check_files_size ( & mut self ) {
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// TODO maybe add multithreading checking for file hash
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let start_time : SystemTime = SystemTime ::now ( ) ;
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let mut folders_to_check : Vec < String > = 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 . to_string ( ) ) ;
}
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self . information . number_of_checked_folders + = folders_to_check . len ( ) ;
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let mut current_folder : String ;
let mut next_folder : String ;
while ! folders_to_check . is_empty ( ) {
current_folder = folders_to_check . pop ( ) . unwrap ( ) ;
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let read_dir = match fs ::read_dir ( & current_folder ) {
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Ok ( t ) = > t ,
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Err ( _ ) = > {
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self . text_messages . warnings . push ( " Cannot open dir " . to_string ( ) + current_folder . as_str ( ) ) ;
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continue ;
} // Permissions denied
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} ;
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 ( " Cannot read entry in dir " . to_string ( ) + current_folder . as_str ( ) ) ;
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continue ;
} //Permissions denied
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} ;
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let metadata : Metadata = match entry_data . metadata ( ) {
Ok ( t ) = > t ,
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Err ( _ ) = > {
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self . text_messages . warnings . push ( " Cannot read metadata in dir " . to_string ( ) + current_folder . as_str ( ) ) ;
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continue ;
} //Permissions denied
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} ;
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if metadata . is_dir ( ) {
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self . information . number_of_checked_folders + = 1 ;
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// if entry_data.file_name().into_string().is_err() { // Probably this can be removed, if crash still will be happens, then uncomment this line
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// self.text_messages.warnings.push("Cannot read folder name in dir ".to_string() + current_folder.as_str());
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// continue; // Permissions denied
// }
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if ! self . recursive_search {
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continue ;
}
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let mut is_excluded_dir = false ;
next_folder = " " . to_owned ( ) + & current_folder + & entry_data . file_name ( ) . into_string ( ) . unwrap ( ) + " / " ;
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for ed in & self . directories . excluded_directories {
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if next_folder = = * ed {
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is_excluded_dir = true ;
break ;
}
}
if ! is_excluded_dir {
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let mut found_expression : bool = false ;
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for expression in & self . excluded_items . items {
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if Common ::regex_check ( expression , & next_folder ) {
found_expression = true ;
break ;
}
}
if found_expression {
break ;
}
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folders_to_check . push ( next_folder ) ;
}
} else if metadata . is_file ( ) {
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let mut have_valid_extension : bool ;
let file_name_lowercase : String = entry_data . file_name ( ) . into_string ( ) . unwrap ( ) . 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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have_valid_extension = false ;
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for i in & self . allowed_extensions . file_extensions {
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if file_name_lowercase . ends_with ( ( " . " . to_string ( ) + i . to_lowercase ( ) . as_str ( ) ) . as_str ( ) ) {
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have_valid_extension = true ;
break ;
}
}
} else {
have_valid_extension = true ;
}
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// Checking files
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if metadata . len ( ) > = self . min_file_size & & have_valid_extension {
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let current_file_name = " " . to_owned ( ) + & current_folder + & entry_data . file_name ( ) . into_string ( ) . unwrap ( ) ;
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// Checking expressions
let mut found_expression : bool = false ;
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for expression in & self . excluded_items . items {
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if Common ::regex_check ( expression , & current_file_name ) {
found_expression = true ;
break ;
}
}
if found_expression {
break ;
}
// 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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created_date : match metadata . created ( ) {
Ok ( t ) = > t ,
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Err ( _ ) = > {
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self . text_messages . warnings . push ( " Unable to get creation date from file " . to_string ( ) + current_file_name . as_str ( ) ) ;
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SystemTime ::now ( )
} // Permissions Denied
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} ,
modified_date : match metadata . modified ( ) {
Ok ( t ) = > t ,
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Err ( _ ) = > {
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self . text_messages . warnings . push ( " Unable to get modification date from file " . to_string ( ) + current_file_name . as_str ( ) ) ;
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SystemTime ::now ( )
} // Permissions Denied
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} ,
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} ;
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self . files_with_identical_size . entry ( metadata . len ( ) ) . or_insert_with ( Vec ::new ) ;
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self . files_with_identical_size . get_mut ( & metadata . len ( ) ) . unwrap ( ) . push ( fe ) ;
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self . information . number_of_checked_files + = 1 ;
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} else {
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self . information . number_of_ignored_files + = 1 ;
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}
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} else {
// Probably this is symbolic links so we are free to ignore this
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self . information . number_of_ignored_things + = 1 ;
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}
}
}
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// Remove files with unique size
let mut new_map : BTreeMap < u64 , Vec < FileEntry > > = Default ::default ( ) ;
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self . information . number_of_duplicated_files_by_size = 0 ;
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for ( size , vector ) in & self . files_with_identical_size {
if vector . len ( ) > 1 {
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self . information . number_of_duplicated_files_by_size + = vector . len ( ) - 1 ;
self . information . number_of_groups_by_size + = 1 ;
self . information . lost_space_by_size + = ( vector . len ( ) as u64 - 1 ) * size ;
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new_map . insert ( * size , vector . clone ( ) ) ;
}
}
self . files_with_identical_size = new_map ;
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Common ::print_time ( start_time , SystemTime ::now ( ) , " check_files_size " . to_string ( ) ) ;
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}
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/// The slowest checking type, which must be applied after checking for size
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fn check_files_hash ( & mut self ) {
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let start_time : SystemTime = SystemTime ::now ( ) ;
let mut file_handler : File ;
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let mut hashmap_with_hash : HashMap < String , Vec < FileEntry > > ;
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for entry in & self . files_with_identical_size {
hashmap_with_hash = Default ::default ( ) ;
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for file_entry in entry . 1. iter ( ) . enumerate ( ) {
file_handler = match File ::open ( & file_entry . 1. path ) {
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Ok ( t ) = > t ,
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Err ( _ ) = > {
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self . text_messages . warnings . push ( " Unable to check hash of file " . to_string ( ) + file_entry . 1. path . as_str ( ) ) ;
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continue ;
}
} ;
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let mut error_reading_file : bool = false ;
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let mut hasher : blake3 ::Hasher = blake3 ::Hasher ::new ( ) ;
let mut buffer = [ 0 u8 ; 16384 ] ;
loop {
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let n = match file_handler . read ( & mut buffer ) {
Ok ( t ) = > t ,
Err ( _ ) = > {
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self . text_messages . warnings . push ( " Error happened when checking hash of file " . to_string ( ) + file_entry . 1. path . as_str ( ) ) ;
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error_reading_file = true ;
break ;
}
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} ;
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if n = = 0 {
break ;
}
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self . information . bytes_read_when_hashing + = n as u64 ;
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hasher . update ( & buffer [ .. n ] ) ;
}
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if ! error_reading_file {
let hash_string : String = hasher . finalize ( ) . to_hex ( ) . to_string ( ) ;
hashmap_with_hash . entry ( hash_string . to_string ( ) ) . or_insert_with ( Vec ::new ) ;
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hashmap_with_hash . get_mut ( hash_string . as_str ( ) ) . unwrap ( ) . push ( file_entry . 1. to_owned ( ) ) ;
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}
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}
for hash_entry in hashmap_with_hash {
if hash_entry . 1. len ( ) > 1 {
self . files_with_identical_hashes . entry ( * entry . 0 ) . or_insert_with ( Vec ::new ) ;
self . files_with_identical_hashes . get_mut ( entry . 0 ) . unwrap ( ) . push ( hash_entry . 1 ) ;
}
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}
}
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for ( size , vector ) in & self . files_with_identical_hashes {
for vec_file_entry in vector {
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self . information . number_of_duplicated_files_by_hash + = vec_file_entry . len ( ) - 1 ;
self . information . number_of_groups_by_hash + = 1 ;
self . information . lost_space_by_hash + = ( vec_file_entry . len ( ) as u64 - 1 ) * size ;
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}
}
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Common ::print_time ( start_time , SystemTime ::now ( ) , " check_files_hash " . to_string ( ) ) ;
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}
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/// Function to delete files, from filed before BTreeMap
/// Using another function to delete files to avoid duplicates data
fn delete_files ( & mut self ) {
let start_time : SystemTime = SystemTime ::now ( ) ;
match self . check_method {
CheckingMethod ::Hash = > {
for entry in & self . files_with_identical_hashes {
for vector in entry . 1 {
let tuple : ( u64 , usize , usize ) = delete_files ( & vector , & self . delete_method , & mut self . text_messages . warnings ) ;
self . information . gained_space + = tuple . 0 ;
self . information . number_of_removed_files + = tuple . 1 ;
self . information . number_of_failed_to_remove_files + = tuple . 2 ;
}
}
}
CheckingMethod ::Size = > {
for entry in & self . files_with_identical_size {
let tuple : ( u64 , usize , usize ) = delete_files ( & entry . 1 , & self . delete_method , & mut self . text_messages . warnings ) ;
self . information . gained_space + = tuple . 0 ;
self . information . number_of_removed_files + = tuple . 1 ;
self . information . number_of_failed_to_remove_files + = tuple . 2 ;
}
}
CheckingMethod ::None = > {
//Just do nothing
panic! ( " Checking method should never be none. " ) ;
}
}
Common ::print_time ( start_time , SystemTime ::now ( ) , " delete_files " . to_string ( ) ) ;
}
}
impl Default for DuplicateFinder {
fn default ( ) -> Self {
Self ::new ( )
}
}
impl DebugPrint for DuplicateFinder {
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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)) ]
{
return ;
}
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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 ( ) ) ;
println! ( " Warnings size - {} " , self . text_messages . warnings . len ( ) ) ;
println! ( " Messages size - {} " , self . text_messages . messages . len ( ) ) ;
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println! ( " Number of checked files - {} " , self . information . number_of_checked_files ) ;
println! ( " Number of checked folders - {} " , self . information . number_of_checked_folders ) ;
println! ( " Number of ignored files - {} " , self . information . number_of_ignored_files ) ;
println! ( " Number of ignored things(like symbolic links) - {} " , self . information . number_of_ignored_things ) ;
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println! (
" Number of duplicated files by size(in groups) - {} ({}) " ,
self . information . number_of_duplicated_files_by_size , self . information . number_of_groups_by_size
) ;
println! (
" Number of duplicated files by hash(in groups) - {} ({}) " ,
self . information . number_of_duplicated_files_by_hash , self . information . number_of_groups_by_hash
) ;
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println! ( " Lost space by size - {} ( {} bytes) " , self . information . lost_space_by_size . file_size ( options ::BINARY ) . unwrap ( ) , self . information . lost_space_by_size ) ;
println! ( " Lost space by hash - {} ( {} bytes) " , self . information . lost_space_by_hash . file_size ( options ::BINARY ) . unwrap ( ) , self . information . lost_space_by_hash ) ;
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println! (
" Gained space by removing duplicated entries - {} ({} bytes) " ,
self . information . gained_space . file_size ( options ::BINARY ) . unwrap ( ) ,
self . information . gained_space
) ;
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println! (
" Bytes read when hashing - {} ({} bytes) " ,
self . information . bytes_read_when_hashing . file_size ( options ::BINARY ) . unwrap ( ) ,
self . information . bytes_read_when_hashing
) ;
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println! ( " Number of removed files - {} " , self . information . number_of_removed_files ) ;
println! ( " Number of failed to remove files - {} " , self . information . number_of_failed_to_remove_files ) ;
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println! ( " ### Other " ) ;
println! ( " Files list size - {} " , self . files_with_identical_size . len ( ) ) ;
println! ( " Hashed Files list size - {} " , self . files_with_identical_hashes . len ( ) ) ;
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println! ( " Allowed extensions - {:?} " , self . allowed_extensions . file_extensions ) ;
println! ( " Excluded items - {:?} " , self . excluded_items . items ) ;
println! ( " Included directories - {:?} " , self . directories . included_directories ) ;
println! ( " Excluded directories - {:?} " , self . directories . excluded_directories ) ;
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println! ( " Recursive search - {} " , self . recursive_search . to_string ( ) ) ;
println! ( " Minimum file size - {:?} " , self . min_file_size ) ;
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println! ( " Checking Method - {:?} " , self . check_method ) ;
println! ( " Delete Method - {:?} " , self . delete_method ) ;
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println! ( " ----------------------------------------- " ) ;
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}
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}
impl SaveResults for DuplicateFinder {
fn save_results_to_file ( & mut self , file_name : & str ) -> bool {
let start_time : SystemTime = SystemTime ::now ( ) ;
let file_name : String = match file_name {
" " = > " results.txt " . to_string ( ) ,
k = > k . to_string ( ) ,
} ;
let mut file = match File ::create ( & file_name ) {
Ok ( t ) = > t ,
Err ( _ ) = > {
self . text_messages . errors . push ( " Failed to create file " . to_string ( ) + file_name . as_str ( ) ) ;
return false ;
}
} ;
match file . write_all ( format! ( " Results of searching in {:?} \n " , self . directories . included_directories ) . as_bytes ( ) ) {
Ok ( _ ) = > ( ) ,
Err ( _ ) = > {
self . text_messages . errors . push ( " Failed to save results to file " . to_string ( ) + file_name . as_str ( ) ) ;
return false ;
}
}
if ! self . files_with_identical_size . is_empty ( ) {
file . write_all ( b " -------------------------------------------------Files with same size------------------------------------------------- \n " ) . unwrap ( ) ;
file . write_all (
( " Found " . to_string ( )
+ self . information . number_of_duplicated_files_by_size . to_string ( ) . as_str ( )
+ " duplicated files which in "
+ self . information . number_of_groups_by_size . to_string ( ) . as_str ( )
+ " groups which takes "
+ self . information . lost_space_by_size . file_size ( options ::BINARY ) . unwrap ( ) . as_str ( )
+ " . \n " )
. as_bytes ( ) ,
)
. unwrap ( ) ;
for ( size , files ) in self . files_with_identical_size . iter ( ) . rev ( ) {
file . write_all ( b " \n ---- Size " ) . unwrap ( ) ;
file . write_all ( size . file_size ( options ::BINARY ) . unwrap ( ) . as_bytes ( ) ) . unwrap ( ) ;
file . write_all ( ( " ( " . to_string ( ) + size . to_string ( ) . as_str ( ) + " ) " ) . as_bytes ( ) ) . unwrap ( ) ;
file . write_all ( ( " - " . to_string ( ) + files . len ( ) . to_string ( ) . as_str ( ) + " files " ) . as_bytes ( ) ) . unwrap ( ) ;
file . write_all ( b " \n " ) . unwrap ( ) ;
for file_entry in files {
file . write_all ( ( file_entry . path . clone ( ) + " \n " ) . as_bytes ( ) ) . unwrap ( ) ;
}
}
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if ! self . files_with_identical_hashes . is_empty ( ) {
file . write_all ( b " -------------------------------------------------Files with same hashes------------------------------------------------- \n " ) . unwrap ( ) ;
file . write_all (
( " Found " . to_string ( )
+ self . information . number_of_duplicated_files_by_hash . to_string ( ) . as_str ( )
+ " duplicated files which in "
+ self . information . number_of_groups_by_hash . to_string ( ) . as_str ( )
+ " groups which takes "
+ self . information . lost_space_by_hash . file_size ( options ::BINARY ) . unwrap ( ) . as_str ( )
+ " . \n " )
. as_bytes ( ) ,
)
. unwrap ( ) ;
for ( size , files ) in self . files_with_identical_hashes . iter ( ) . rev ( ) {
for vector in files {
file . write_all ( b " \n ---- Size " ) . unwrap ( ) ;
file . write_all ( size . file_size ( options ::BINARY ) . unwrap ( ) . as_bytes ( ) ) . unwrap ( ) ;
file . write_all ( ( " ( " . to_string ( ) + size . to_string ( ) . as_str ( ) + " ) " ) . as_bytes ( ) ) . unwrap ( ) ;
file . write_all ( ( " - " . to_string ( ) + vector . len ( ) . to_string ( ) . as_str ( ) + " files " ) . as_bytes ( ) ) . unwrap ( ) ;
file . write_all ( b " \n " ) . unwrap ( ) ;
for file_entry in vector {
file . write_all ( ( file_entry . path . clone ( ) + " \n " ) . as_bytes ( ) ) . unwrap ( ) ;
}
}
}
}
} else {
file . write_all ( b " Not found any empty folders. " ) . unwrap ( ) ;
}
Common ::print_time ( start_time , SystemTime ::now ( ) , " save_results_to_file " . to_string ( ) ) ;
true
}
}
impl PrintResults for DuplicateFinder {
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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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let mut number_of_files : u64 = 0 ;
let mut number_of_groups : u64 = 0 ;
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match self . check_method {
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CheckingMethod ::Hash = > {
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for ( _size , vector ) in self . files_with_identical_hashes . iter ( ) {
for j in vector {
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number_of_files + = j . len ( ) as u64 ;
number_of_groups + = 1 ;
}
}
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println! (
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" Found {} duplicated files in {} groups with same content which took {}: " ,
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number_of_files ,
number_of_groups ,
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self . information . lost_space_by_size . file_size ( options ::BINARY ) . unwrap ( )
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) ;
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for ( size , vector ) in self . files_with_identical_hashes . iter ( ) . rev ( ) {
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for j in vector {
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println! ( " Size - {} ( {} ) - {} files " , size . file_size ( options ::BINARY ) . unwrap ( ) , size , j . len ( ) ) ;
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for k in j {
println! ( " {} " , k . path ) ;
}
println! ( " ---- " ) ;
}
println! ( ) ;
}
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}
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CheckingMethod ::Size = > {
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for i in & self . files_with_identical_size {
number_of_files + = i . 1. len ( ) as u64 ;
number_of_groups + = 1 ;
}
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println! (
" Found {} files in {} groups with same size(may have different content) which took {}: " ,
number_of_files ,
number_of_groups ,
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self . information . lost_space_by_size . file_size ( options ::BINARY ) . unwrap ( )
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) ;
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for ( size , vector ) in & self . files_with_identical_size {
println! ( " Size - {} ( {} ) - {} files " , size . file_size ( options ::BINARY ) . unwrap ( ) , size , vector . len ( ) ) ;
for j in vector {
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println! ( " {} " , j . path ) ;
}
println! ( ) ;
}
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}
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CheckingMethod ::None = > {
panic! ( " Checking Method shouldn't be ever set to None " ) ;
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}
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}
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Common ::print_time ( start_time , SystemTime ::now ( ) , " print_duplicated_entries " . to_string ( ) ) ;
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}
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}
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/// Functions to remove slice(vector) of files with provided method
/// Returns size of removed elements, number of deleted and failed to delete files and modified warning list
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fn delete_files ( vector : & [ FileEntry ] , delete_method : & DeleteMethod , warnings : & mut Vec < String > ) -> ( u64 , usize , usize ) {
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assert! ( vector . len ( ) > 1 , " Vector length must be bigger than 1(This should be done in previous steps). " ) ;
let mut q_index : usize = 0 ;
let mut q_time : u64 = 0 ;
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let mut gained_space : u64 = 0 ;
let mut removed_files : usize = 0 ;
let mut failed_to_remove_files : usize = 0 ;
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match delete_method {
DeleteMethod ::OneOldest = > {
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for ( index , file ) in vector . iter ( ) . enumerate ( ) {
let time_since_epoch = file . created_date . duration_since ( UNIX_EPOCH ) . expect ( " Invalid file date " ) . as_secs ( ) ;
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if q_time = = 0 | | q_time > time_since_epoch {
q_time = time_since_epoch ;
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q_index = index ;
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}
}
match fs ::remove_file ( vector [ q_index ] . path . clone ( ) ) {
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Ok ( _ ) = > {
removed_files + = 1 ;
gained_space + = vector [ q_index ] . size ;
}
Err ( _ ) = > {
failed_to_remove_files + = 1 ;
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warnings . push ( " Failed to delete " . to_string ( ) + vector [ q_index ] . path . as_str ( ) ) ;
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}
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} ;
}
DeleteMethod ::OneNewest = > {
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for ( index , file ) in vector . iter ( ) . enumerate ( ) {
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let time_since_epoch = file . created_date . duration_since ( UNIX_EPOCH ) . expect ( " Invalid file date " ) . as_secs ( ) ;
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if q_time = = 0 | | q_time < time_since_epoch {
q_time = time_since_epoch ;
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q_index = index ;
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}
}
match fs ::remove_file ( vector [ q_index ] . path . clone ( ) ) {
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Ok ( _ ) = > {
removed_files + = 1 ;
gained_space + = vector [ q_index ] . size ;
}
Err ( _ ) = > {
failed_to_remove_files + = 1 ;
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warnings . push ( " Failed to delete " . to_string ( ) + vector [ q_index ] . path . as_str ( ) ) ;
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}
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} ;
}
DeleteMethod ::AllExceptOldest = > {
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for ( index , file ) in vector . iter ( ) . enumerate ( ) {
let time_since_epoch = file . created_date . duration_since ( UNIX_EPOCH ) . expect ( " Invalid file date " ) . as_secs ( ) ;
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if q_time = = 0 | | q_time > time_since_epoch {
q_time = time_since_epoch ;
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q_index = index ;
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}
}
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for ( index , file ) in vector . iter ( ) . enumerate ( ) {
if q_index ! = index {
match fs ::remove_file ( file . path . clone ( ) ) {
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Ok ( _ ) = > {
removed_files + = 1 ;
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gained_space + = file . size ;
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}
Err ( _ ) = > {
failed_to_remove_files + = 1 ;
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warnings . push ( " Failed to delete " . to_string ( ) + file . path . as_str ( ) ) ;
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}
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} ;
}
}
}
DeleteMethod ::AllExceptNewest = > {
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for ( index , file ) in vector . iter ( ) . enumerate ( ) {
let time_since_epoch = file . created_date . duration_since ( UNIX_EPOCH ) . expect ( " Invalid file date " ) . as_secs ( ) ;
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if q_time = = 0 | | q_time < time_since_epoch {
q_time = time_since_epoch ;
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q_index = index ;
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}
}
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for ( index , file ) in vector . iter ( ) . enumerate ( ) {
if q_index ! = index {
match fs ::remove_file ( file . path . clone ( ) ) {
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Ok ( _ ) = > {
removed_files + = 1 ;
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gained_space + = file . size ;
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}
Err ( _ ) = > {
failed_to_remove_files + = 1 ;
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warnings . push ( " Failed to delete " . to_string ( ) + file . path . as_str ( ) ) ;
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}
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} ;
}
}
}
DeleteMethod ::None = > {
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// Just don't remove files
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}
} ;
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( gained_space , removed_files , failed_to_remove_files )
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}