File size distribution: Difference between revisions
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filteredGroups n = filter ((>0) . snd ) . frequencyGroups n . sort . fileSizes</lang> |
filteredGroups n = filter ((>0) . snd ) . frequencyGroups n . sort . fileSizes</lang> |
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{{out}} |
{{out}} |
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<pre>$filedist . 10 |
<pre>$ filedist . 10 |
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Total files: 431815 |
Total files: 431815 |
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Total folders: 65549 |
Total folders: 65549 |
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Revision as of 18:42, 19 June 2020
You are encouraged to solve this task according to the task description, using any language you may know.
- Task
Beginning from the current directory, or optionally from a directory specified as a command-line argument, determine how many files there are of various sizes in a directory hierarchy.
My suggestion is to sort by logarithmn of file size, since a few bytes here or there, or even a factor of two or three, may not be that significant.
Don't forget that empty files may exist, to serve as a marker.
Is your file system predominantly devoted to a large number of smaller files, or a smaller number of huge files?
C
The platform independent way to get the file size in C involves opening every file and reading the size. The implementation below works for Windows and utilizes command scripts to get size information quickly even for a large number of files, recursively traversing a large number of directories. Both textual and graphical ( ASCII ) outputs are shown. The same can be done for Linux by a combination of the find, ls and stat commands and my plan was to make it work on both OS types, but I don't have access to a Linux system right now. This would also mean either abandoning scaling the graphical output in order to fit the console buffer or porting that as well, thus including windows.h selectively.
Windows
<lang C>
- include<windows.h>
- include<string.h>
- include<stdio.h>
- define MAXORDER 25
int main(int argC, char* argV[]) { char str[MAXORDER],commandString[1000],*startPath; long int* fileSizeLog = (long int*)calloc(sizeof(long int),MAXORDER),max; int i,j,len; double scale; FILE* fp;
if(argC==1) printf("Usage : %s <followed by directory to start search from(. for current dir), followed by \n optional parameters (T or G) to show text or graph output>",argV[0]); else{ if(strchr(argV[1],' ')!=NULL){ len = strlen(argV[1]); startPath = (char*)malloc((len+2)*sizeof(char)); startPath[0] = '\"'; startPath[len+1]='\"'; strncpy(startPath+1,argV[1],len); startPath[len+2] = argV[1][len]; sprintf(commandString,"forfiles /p %s /s /c \"cmd /c echo @fsize\" 2>&1",startPath); }
else if(strlen(argV[1])==1 && argV[1][0]=='.') strcpy(commandString,"forfiles /s /c \"cmd /c echo @fsize\" 2>&1");
else sprintf(commandString,"forfiles /p %s /s /c \"cmd /c echo @fsize\" 2>&1",argV[1]);
fp = popen(commandString,"r");
while(fgets(str,100,fp)!=NULL){ if(str[0]=='0') fileSizeLog[0]++; else fileSizeLog[strlen(str)]++; }
if(argC==2 || (argC==3 && (argV[2][0]=='t'||argV[2][0]=='T'))){ for(i=0;i<MAXORDER;i++){ printf("\nSize Order < 10^%2d bytes : %Ld",i,fileSizeLog[i]); } }
else if(argC==3 && (argV[2][0]=='g'||argV[2][0]=='G')){ CONSOLE_SCREEN_BUFFER_INFO csbi; int val = GetConsoleScreenBufferInfo(GetStdHandle( STD_OUTPUT_HANDLE ),&csbi); if(val) {
max = fileSizeLog[0];
for(i=1;i<MAXORDER;i++) (fileSizeLog[i]>max)?max=fileSizeLog[i]:max;
(max < csbi.dwSize.X)?(scale=1):(scale=(1.0*(csbi.dwSize.X-50))/max);
for(i=0;i<MAXORDER;i++){ printf("\nSize Order < 10^%2d bytes |",i); for(j=0;j<(int)(scale*fileSizeLog[i]);j++) printf("%c",219); printf("%Ld",fileSizeLog[i]); } }
} return 0; } } </lang> Invocation and textual output :
C:\My Projects\threeJS>fileSize.exe "C:\My Projects" t Size Order < 10^ 0 bytes : 1770 Size Order < 10^ 1 bytes : 1 Size Order < 10^ 2 bytes : 20 Size Order < 10^ 3 bytes : 219 Size Order < 10^ 4 bytes : 1793 Size Order < 10^ 5 bytes : 1832 Size Order < 10^ 6 bytes : 631 Size Order < 10^ 7 bytes : 124 Size Order < 10^ 8 bytes : 26 Size Order < 10^ 9 bytes : 0 Size Order < 10^10 bytes : 0 Size Order < 10^11 bytes : 0 Size Order < 10^12 bytes : 0 Size Order < 10^13 bytes : 0 Size Order < 10^14 bytes : 0 Size Order < 10^15 bytes : 0 Size Order < 10^16 bytes : 0 Size Order < 10^17 bytes : 0 Size Order < 10^18 bytes : 0 Size Order < 10^19 bytes : 0 Size Order < 10^20 bytes : 0 Size Order < 10^21 bytes : 0 Size Order < 10^22 bytes : 0 Size Order < 10^23 bytes : 0 Size Order < 10^24 bytes : 0
Invocation and graphical output :
C:\My Projects\threeJS>fileSize.exe "C:\My Projects" g Size Order < 10^ 0 bytes |█████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████1770 Size Order < 10^ 1 bytes |1 Size Order < 10^ 2 bytes |██20 Size Order < 10^ 3 bytes |█████████████████████████████219 Size Order < 10^ 4 bytes |████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████1793 Size Order < 10^ 5 bytes |██████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████1832 Size Order < 10^ 6 bytes |██████████████████████████████████████████████████████████████████████████████████████631 Size Order < 10^ 7 bytes |████████████████124 Size Order < 10^ 8 bytes |███26 Size Order < 10^ 9 bytes |0 Size Order < 10^10 bytes |0 Size Order < 10^11 bytes |0 Size Order < 10^12 bytes |0 Size Order < 10^13 bytes |0 Size Order < 10^14 bytes |0 Size Order < 10^15 bytes |0 Size Order < 10^16 bytes |0 Size Order < 10^17 bytes |0 Size Order < 10^18 bytes |0 Size Order < 10^19 bytes |0 Size Order < 10^20 bytes |0 Size Order < 10^21 bytes |0 Size Order < 10^22 bytes |0 Size Order < 10^23 bytes |0 Size Order < 10^24 bytes |0
Note that it is possible to track files up to 10^24 (Yottabyte) in size with this implementation, but if you have a file that large, you shouldn't be needing such programs. :)
POSIX
This works on macOS 10.15. It should be OK for Linux as well. <lang c>#include <ftw.h>
- include <locale.h>
- include <stdint.h>
- include <stdio.h>
- include <stdlib.h>
static const uintmax_t sizes[] = {
0, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000, 10000000000
}; static const size_t nsizes = sizeof(sizes)/sizeof(sizes[0]); static uintmax_t count[nsizes + 1] = { 0 }; static uintmax_t files = 0; static uintmax_t total_size = 0;
static int callback(const char* file, const struct stat* sp, int flag) {
if (flag == FTW_F) {
uintmax_t file_size = sp->st_size;
++files;
total_size += file_size;
size_t index = 0;
for (; index <= nsizes && sizes[index] < file_size; ++index);
++count[index];
} else if (flag == FTW_DNR) {
fprintf(stderr, "Cannot read directory %s.\n", file);
}
return 0;
}
int main(int argc, char** argv) {
setlocale(LC_ALL, "");
const char* directory = argc > 1 ? argv[1] : ".";
if (ftw(directory, callback, 512) != 0) {
perror(directory);
return EXIT_FAILURE;
}
printf("File size distribution for '%s':\n", directory);
for (size_t i = 0; i <= nsizes; ++i) {
if (i == nsizes)
printf("> %'lu", sizes[i - 1]);
else
printf("%'16lu", sizes[i]);
printf(" bytes: %'lu\n", count[i]);
}
printf("Number of files: %'lu\n", files);
printf("Total file size: %'lu\n", total_size);
return EXIT_SUCCESS;
}</lang>
- Output:
File size distribution for '.':
0 bytes: 0
1,000 bytes: 3
10,000 bytes: 111
100,000 bytes: 2,457
1,000,000 bytes: 2,645
10,000,000 bytes: 2,483
100,000,000 bytes: 172
1,000,000,000 bytes: 3
10,000,000,000 bytes: 0
> 10,000,000,000 bytes: 0
Number of files: 7,874
Total file size: 11,963,566,673
C++
<lang cpp>#include <algorithm>
- include <array>
- include <filesystem>
- include <iomanip>
- include <iostream>
void file_size_distribution(const std::filesystem::path& directory) {
constexpr size_t n = 9;
constexpr std::array<std::uintmax_t, n> sizes = { 0, 1000, 10000,
100000, 1000000, 10000000, 100000000, 1000000000, 10000000000 };
std::array<size_t, n + 1> count = { 0 };
size_t files = 0;
std::uintmax_t total_size = 0;
std::filesystem::recursive_directory_iterator iter(directory);
for (const auto& dir_entry : iter) {
if (dir_entry.is_regular_file() && !dir_entry.is_symlink()) {
std::uintmax_t file_size = dir_entry.file_size();
total_size += file_size;
auto i = std::lower_bound(sizes.begin(), sizes.end(), file_size);
size_t index = std::distance(sizes.begin(), i);
++count[index];
++files;
}
}
std::cout << "File size distribution for " << directory << ":\n";
for (size_t i = 0; i <= n; ++i) {
if (i == n)
std::cout << "> " << sizes[i - 1];
else
std::cout << std::setw(16) << sizes[i];
std::cout << " bytes: " << count[i] << '\n';
}
std::cout << "Number of files: " << files << '\n';
std::cout << "Total file size: " << total_size << " bytes\n";
}
int main(int argc, char** argv) {
std::cout.imbue(std::locale(""));
try {
const char* directory(argc > 1 ? argv[1] : ".");
std::filesystem::path path(directory);
if (!is_directory(path)) {
std::cerr << directory << " is not a directory.\n";
return EXIT_FAILURE;
}
file_size_distribution(path);
} catch (const std::exception& ex) {
std::cerr << ex.what() << '\n';
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}</lang>
- Output:
File size distribution for ".":
0 bytes: 0
1,000 bytes: 3
10,000 bytes: 111
100,000 bytes: 2,457
1,000,000 bytes: 2,645
10,000,000 bytes: 2,483
100,000,000 bytes: 172
1,000,000,000 bytes: 3
10,000,000,000 bytes: 0
> 10,000,000,000 bytes: 0
Number of files: 7,874
Total file size: 11,963,566,673 bytes
Go
<lang go>package main
import (
"fmt" "log" "math" "os" "path/filepath"
)
func commatize(n int64) string {
s := fmt.Sprintf("%d", n)
if n < 0 {
s = s[1:]
}
le := len(s)
for i := le - 3; i >= 1; i -= 3 {
s = s[0:i] + "," + s[i:]
}
if n >= 0 {
return s
}
return "-" + s
}
func fileSizeDistribution(root string) {
var sizes [12]int
files := 0
directories := 0
totalSize := int64(0)
walkFunc := func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
files++
if info.IsDir() {
directories++
}
size := info.Size()
if size == 0 {
sizes[0]++
return nil
}
totalSize += size
logSize := math.Log10(float64(size))
index := int(math.Floor(logSize))
sizes[index+1]++
return nil
}
err := filepath.Walk(root, walkFunc)
if err != nil {
log.Fatal(err)
}
fmt.Printf("File size distribution for '%s' :-\n\n", root)
for i := 0; i < len(sizes); i++ {
if i == 0 {
fmt.Print(" ")
} else {
fmt.Print("+ ")
}
fmt.Printf("Files less than 10 ^ %-2d bytes : %5d\n", i, sizes[i])
}
fmt.Println(" -----")
fmt.Printf("= Total number of files : %5d\n", files)
fmt.Printf(" including directories : %5d\n", directories)
c := commatize(totalSize)
fmt.Println("\n Total size of files :", c, "bytes")
}
func main() {
fileSizeDistribution("./")
}</lang>
- Output:
File size distribution for './' :-
Files less than 10 ^ 0 bytes : 0
+ Files less than 10 ^ 1 bytes : 0
+ Files less than 10 ^ 2 bytes : 8
+ Files less than 10 ^ 3 bytes : 98
+ Files less than 10 ^ 4 bytes : 163
+ Files less than 10 ^ 5 bytes : 18
+ Files less than 10 ^ 6 bytes : 8
+ Files less than 10 ^ 7 bytes : 18
+ Files less than 10 ^ 8 bytes : 1
+ Files less than 10 ^ 9 bytes : 0
+ Files less than 10 ^ 10 bytes : 0
+ Files less than 10 ^ 11 bytes : 0
-----
= Total number of files : 314
including directories : 7
Total size of files : 74,205,408 bytes
Haskell
Uses grouped frequency distribution. Program arguments include directory and frequency distribution group size. Distribution groups of 0 are removed. <lang haskell>{-# LANGUAGE TupleSections #-}
import Control.Monad (filterM, join) import Data.Char (isDigit) import Data.List (sort, genericLength, genericTake) import System.Directory (getDirectoryContents, doesFileExist
, canonicalizePath, doesDirectoryExist)
import System.Environment (getArgs) import System.FilePath.Posix (pathSeparator, (</>)) import System.IO (hFileSize, withFile, IOMode(ReadMode), FilePath) import Text.Printf (printf)
data Item = File FilePath Integer
| Folder FilePath
deriving (Show)
frequencyGroups :: (Integral a) => Int -> [a] -> [((a,a), a)] frequencyGroups totalGroups xs = placeGroups xs groupMinMax
where range = maximum xs - minimum xs groupSize = succ $ ceiling $ realToFrac range / realToFrac totalGroups groups = genericTake (succ totalGroups) (iterate (+groupSize) 0) groupMinMax = (,0) <$> zip groups (pred <$> tail groups)
placeGroups [] gs = gs
placeGroups (d:ds) gs = placeGroups ds $
fmap (\g@((min,max), count) -> if d >= min && d <= max
then ((min, max), succ count)
else g) gs
fileSizes :: [Item] -> [Integer] fileSizes = foldr f []
where f (File _ n) acc = n : acc f _ acc = acc
totalBytes :: [Item] -> Integer totalBytes = sum . fileSizes
displaySize :: Integer -> String displaySize n
| n <= 2^10 = show n <> "B" | n >= 2^10 && n <= 2^20 = f "KB" $ 2^10 | n >= 2^20 && n <= 2^30 = f "MB" $ 2^20 | n >= 2^30 && n <= 2^40 = f "GB" $ 2^30 | n >= 2^40 && n <= 2^50 = f "TB" $ 2^40 | otherwise = "Too large!" where f suffix = (<> suffix) . show . round . (realToFrac n /)
collectItems :: FilePath -> IO [Item] collectItems p = do
contents <- fmap (p </>) <$> getDirectoryContents p files <- filterM doesFileExist contents folders <- drop 2 <$> filterM doesDirectoryExist contents a <- mapM (\f -> File f <$> withFile f ReadMode hFileSize) files b <- mapM collectItems folders pure $ a <> join b <> fmap Folder folders
displayFrequency :: ((Integer, Integer), Integer) -> IO () displayFrequency ((min, max), count) =
printf "%5s <-> %5s = %d\n" (displaySize min) (displaySize max) count
parseArgs :: [String] -> Either String (FilePath, Int) parseArgs (x:y:xs)
| all isDigit y = Right (x, read y) | otherwise = Left "Invalid frequency group size"
parseArgs (x:xs) = Right (x, 4) parseArgs _ = Right (".", 4)
main :: IO () main = do
args <- getArgs
case parseArgs args of
Left errorMessage -> putStrLn errorMessage
Right (path, groupSize) -> do
items <- collectItems path
let (fileCount, folderCount) = counts items
printf "Total files: %d\n" fileCount
printf "Total folders: %d\n" folderCount
printf "Total size: %s\n" $ displaySize $ totalBytes items
putStrLn "\nDistribution:"
mapM_ displayFrequency $ filteredGroups groupSize items
where
counts :: [Item] -> (Int, Int)
counts =
foldr (\x (a, b) -> case x of File _ _ -> (succ a, b)
Folder _ -> (a, succ b)
) (0, 0)
filteredGroups n = filter ((>0) . snd ) . frequencyGroups n . sort . fileSizes</lang>
- Output:
$ filedist . 10 Total files: 431815 Total folders: 65549 Total size: 6GB Distribution: 0B <-> 39MB = 431799 39MB <-> 78MB = 6 78MB <-> 118MB = 3 118MB <-> 157MB = 5 157MB <-> 196MB = 1 353MB <-> 392MB = 1
Julia
<lang julia>using Humanize
function sizelist(path::AbstractString)
rst = Vector{Int}(0)
for (root, dirs, files) in walkdir(path)
files = joinpath.(root, files)
tmp = collect(filesize(f) for f in files if !islink(f))
append!(rst, tmp)
end
return rst
end
byclass(y, classes) = Dict{eltype(classes),Int}(c => count(c[1] .≤ y .< c[2]) for c in classes)
function main(path::AbstractString)
s = sizelist(path) cls = append!([(0, 1)], collect((10 ^ (i-1), 10 ^ i) for i in 1:9)) f = byclass(s, cls)
println("filesizes: ")
for c in cls
@printf(" - between %8s and %8s bytes: %3i\n", datasize(c[1]), datasize(c[2]), f[c])
end
println("\n-> total: $(datasize(sum(s))) bytes and $(length(s)) files")
end
main(".")</lang>
- Output:
filesizes: - between 0.0 B and 1.0 B bytes: 0 - between 1.0 B and 10.0 B bytes: 1 - between 10.0 B and 100.0 B bytes: 44 - between 100.0 B and 1.0 kB bytes: 1068 - between 1.0 kB and 10.0 kB bytes: 250 - between 10.0 kB and 100.0 kB bytes: 7 - between 100.0 kB and 1.0 MB bytes: 4 - between 1.0 MB and 10.0 MB bytes: 2 - between 10.0 MB and 100.0 MB bytes: 0 - between 100.0 MB and 1.0 GB bytes: 0 -> total: 7.3 MB bytes and 1376 files
Kotlin
<lang scala>// version 1.2.10
import java.io.File import kotlin.math.log10 import kotlin.math.floor
fun fileSizeDistribution(path: String) {
val sizes = IntArray(12)
val p = File(path)
val files = p.walk()
var accessible = 0
var notAccessible = 0
var totalSize = 0L
for (file in files) {
try {
if (file.isFile()) {
val len = file.length()
accessible++
if (len == 0L) {
sizes[0]++
continue
}
totalSize += len
val logLen = log10(len.toDouble())
val index = floor(logLen).toInt()
sizes[index + 1]++
}
}
catch (se: SecurityException) {
notAccessible++
}
}
println("File size distribution for '$path' :-\n")
for (i in 0 until sizes.size) {
print(if (i == 0) " " else "+ ")
print("Files less than 10 ^ ${"%-2d".format(i)} bytes : ")
println("%5d".format(sizes[i]))
}
println(" -----")
println("= Number of accessible files : ${"%5d".format(accessible)}")
println("\n Total size in bytes : $totalSize")
println("\n Number of inaccessible files : ${"%5d".format(notAccessible)}")
}
fun main(args: Array<String>) {
fileSizeDistribution("./") // current directory
}</lang>
- Output:
File size distribution for './' :-
Files less than 10 ^ 0 bytes : 2
+ Files less than 10 ^ 1 bytes : 0
+ Files less than 10 ^ 2 bytes : 46
+ Files less than 10 ^ 3 bytes : 380
+ Files less than 10 ^ 4 bytes : 558
+ Files less than 10 ^ 5 bytes : 19
+ Files less than 10 ^ 6 bytes : 6
+ Files less than 10 ^ 7 bytes : 5
+ Files less than 10 ^ 8 bytes : 0
+ Files less than 10 ^ 9 bytes : 0
+ Files less than 10 ^ 10 bytes : 0
+ Files less than 10 ^ 11 bytes : 0
-----
= Number of accessible files : 1016
Total size in bytes : 14459732
Number of inaccessible files : 0
Perl
<lang perl>use File::Find; use List::Util qw(max);
my %fsize; $dir = shift || '.'; find(\&fsize, $dir);
$max = max($max,$fsize{$_}) for keys %fsize; $total += $size while (undef,$size) = each %fsize;
print "File size distribution in bytes for directory: $dir\n"; for (0 .. max(keys %fsize)) {
printf "# files @ %4sb %8s: %s\n", $_ ? '10e'.($_-1) : 0, $fsize{$_} // 0,
histogram( $max, $fsize{$_} // 0, 80);
} print "$total total files.\n";
sub histogram {
my($max, $value, $width) = @_; my @blocks = qw<| ▏ ▎ ▍ ▌ ▋ ▊ ▉ █>; my $scaled = int $value * $width / $max; my $end = $scaled % 8; my $bar = int $scaled / 8; my $B = $blocks[8] x ($bar * 8) . ($end ? $blocks[$end] : );
}
sub fsize { $fsize{ log10( (lstat($_))[7] ) }++ } sub log10 { my($s) = @_; $s ? int log($s)/log(10) : 0 }</lang>
- Output:
File size distribution in bytes for directory: . # files @ 0b 5: # files @ 10e0b 46455: ████████████████████████████████████████████████████████████████████████████████ # files @ 10e1b 26146: ████████████████████████████████████████▋ # files @ 10e2b 3993: ▊ # files @ 10e3b 1222: ▎ # files @ 10e4b 19: # files @ 10e5b 3: 77843 total files.
Phix
Works on Windows and Linux. Uses "proper" sizes, ie 1MB==1024KB. Can be quite slow at first, but is pretty fast on the second and subsequent runs, that is once the OS has cached its (low-level) directory reads. <lang Phix>sequence sizes = {1},
res = {0}
atom t1 = time()+1
function store_res(string filepath, sequence dir_entry)
if not find('d', dir_entry[D_ATTRIBUTES]) then
atom size = dir_entry[D_SIZE]
integer sdx = 1
while size>sizes[sdx] do
if sdx=length(sizes) then
sizes &= sizes[$]*iff(mod(length(sizes),3)?10:10.24)
res &= 0
end if
sdx += 1
end while
res[sdx] += 1
if time()>t1 then
printf(1,"%,d files found\r",sum(res))
t1 = time()+1
end if
end if
return 0 -- keep going
end function integer exit_code = walk_dir(".", routine_id("store_res"), true)
printf(1,"%,d files found\n",sum(res)) integer w = max(res) include builtins/pfile.e for i=1 to length(res) do
integer ri = res[i]
string s = file_size_k(sizes[i], 5),
p = repeat('*',floor(60*ri/w))
printf(1,"files < %s: %s%,d\n",{s,p,ri})
end for</lang>
- Output:
112,160 files found files < 1: 333 files < 10: *911 files < 100: ******4,731 files < 1KB: ********************************24,332 files < 10KB: ************************************************************45,379 files < 100KB: *********************************25,299 files < 1MB: *************10,141 files < 10MB: *933 files < 100MB: 91 files < 1GB: 8 files < 10GB: 2
Python
The distribution is stored in a collections.Counter object (like a dictionary with automatic 0 value when a key is not found, useful when incrementing). Anything could be done with this object, here the number of files is printed for increasing sizes. No check is made during the directory walk: usually, safeguards would be needed or the program will fail on any unreadable file or directory (depending on rights, or too deep paths, for instance). Here links are skipped, so it should avoid cycles.
<lang python>import sys, os from collections import Counter
def dodir(path):
global h
for name in os.listdir(path):
p = os.path.join(path, name)
if os.path.islink(p):
pass
elif os.path.isfile(p):
h[os.stat(p).st_size] += 1
elif os.path.isdir(p):
dodir(p)
else:
pass
def main(arg):
global h
h = Counter()
for dir in arg:
dodir(dir)
s = n = 0
for k, v in sorted(h.items()):
print("Size %d -> %d file(s)" % (k, v))
n += v
s += k * v
print("Total %d bytes for %d files" % (s, n))
main(sys.argv[1:])</lang>
Racket
<lang racket>#lang racket
(define (file-size-distribution (d (current-directory)) #:size-group-function (sgf values))
(for/fold ((rv (hash)) (Σ 0) (n 0)) ((f (in-directory d)) #:when (file-exists? f)) (define sz (file-size f)) (values (hash-update rv (sgf sz) add1 0) (+ Σ sz) (add1 n))))
(define (log10-or-so x) (if (zero? x) #f (round (/ (log x) (log 10)))))
(define number-maybe-<
(match-lambda** [(#f #f) #f]
[(#f _) #t]
[(_ #f) #f]
[(a b) (< a b)]))
(define ...s? (match-lambda** [(one 1) one] [(one n) (string-append one "s")]))
(define ((report-fsd f) fsd Σ n)
(for/list ((k (in-list (sort (hash-keys fsd) number-maybe-<))))
(printf "~a(size): ~a -> ~a ~a~%"
(object-name f)
k
(hash-ref fsd k) (...s? "file" (hash-ref fsd k))))
(printf "Total: ~a ~a in ~a ~a~%" Σ (...s? "byte" Σ) n (...s? "file" n)))
(module+ test
(call-with-values (λ () (file-size-distribution #:size-group-function log10-or-so))
(report-fsd log10-or-so)))</lang>
- Output:
log10-or-so(size): #f -> 3 files log10-or-so(size): 0 -> 4 files log10-or-so(size): 1.0 -> 39 files log10-or-so(size): 2.0 -> 57 files log10-or-so(size): 3.0 -> 406 files log10-or-so(size): 4.0 -> 198 files log10-or-so(size): 5.0 -> 20 files log10-or-so(size): 6.0 -> 6 files Total: 10210127 bytes in 733 files
Raku
(formerly Perl 6)
By default, process the current and all readable sub-directories, or, pass in a directory path at the command line.
<lang perl6>sub MAIN($dir = '.') {
sub log10 (Int $s) { $s ?? $s.log(10).Int !! 0 }
my %fsize;
my @dirs = $dir.IO;
while @dirs {
for @dirs.pop.dir -> $path {
%fsize{$path.s.&log10}++ if $path.f;
@dirs.push: $path if $path.d and $path.r
}
}
my $max = %fsize.values.max;
my $bar-size = 80;
say "File size distribution in bytes for directory: $dir\n";
for 0 .. %fsize.keys.max {
say sprintf( "# Files @ %5sb %8s: ", $_ ?? "10e{$_-1}" !! 0, %fsize{$_} // 0 ),
histogram( $max, %fsize{$_} // 0, $bar-size )
}
say %fsize.values.sum, ' total files.';
}
sub histogram ($max, $value, $width = 60) {
my @blocks = <| ▏ ▎ ▍ ▌ ▋ ▊ ▉ █>; my $scaled = ($value * $width / $max).Int; my ($end, $bar) = $scaled.polymod(8); (@blocks[8] x $bar * 8) ~ (@blocks[$end] if $end) ~ "\n"
}</lang>
- Output:
File size distribution in bytes for directory: /home # Files @ 0b 989: ▏ # Files @ 10e0b 6655: ████████ # Files @ 10e1b 31776: ████████████████████████████████████████ # Files @ 10e2b 63165: ████████████████████████████████████████████████████████████████████████████████ # Files @ 10e3b 19874: ████████████████████████▏ # Files @ 10e4b 7730: ████████▏ # Files @ 10e5b 3418: ▌ # Files @ 10e6b 1378: ▏ # Files @ 10e7b 199: # Files @ 10e8b 45: 135229 total files.
REXX
This REXX version works for Microsoft Windows using the dir subcommand; extra code was added for
older versions of Windows that used suffixes to express big numbers (the size of a file), and also versions
that used a mixed case for showing the output text.
Also, some Windows versions of the dir command insert commas into numbers, so code was added to elide them. <lang rexx>/*REXX program displays a histogram of filesize distribution of a directory structure(s)*/ numeric digits 30 /*ensure enough decimal digits for a #.*/ parse arg ds . /*obtain optional argument from the CL.*/ parse source . . path . /* " the path of this REXX program.*/ fID= substr(path, 1 + lastpos('\', path) ) /* " the filename and the filetype.*/ parse var fID fn '.' /* " just the pure filename of pgm.*/ sw=max(79, linesize() - 1) /* " terminal width (linesize) - 1.*/
work= fn".OUT" /*filename for workfile output of DIR.*/
'DIR' ds '/s /-c /a-d >' work /*do (DOS) DIR cmd for a data structure*/ call linein 0, 1 /*open output file, point to 1st record*/ maxL= 0; @.= 00; g= 0 /*max len size; log array; # good recs.*/ $=0 /*$: total bytes used by files found. */
do while lines(work)\==0; _= linein(work) /*process the data in the DIR work file*/
if left(_, 1)==' ' then iterate /*Is the record not legitimate? Skip. */
parse upper var _ . . sz . /*uppercase the suffix (if any). */
sz= space( translate(sz, , ','), 0) /*remove any commas if present in the #*/
if \datatype(sz,'W') then do; #= left(sz, length(sz) - 1) /*SZ has a suffix?*/
if \datatype(#,'N') then iterate /*Meat ¬ numeric? */
sz= # * 1024 ** pos( right(sz, 1), 'KMGTPEZYXWVU') / 1
end /* [↑] use suffix*/
$= $ + sz /*keep a running total for the filesize*/
if sz==0 then L= 0 /*handle special case for an empty file*/
else L= length(sz) /*obtain the length of filesize number.*/
g= g + 1 /*bump the counter of # of good records*/
maxL= max(L, maxL) /*get max length filesize for alignment*/
@.L= @.L + 1 /*bump counter of record size category.*/
end /*j*/ /* [↑] categories: split by log ten.*/
if g==0 then do; say 'file not found: ' ds; exit 13; end /*no good records*/ say ' record size range count ' hdr= '══════════════════ ══════════ '; say hdr; Lhdr=length(hdr) mC=0 /*mC: the maximum count for any range.*/
do t=1 to 2 /*T==1 is used to find the max count.*/
do k=0 to maxL; mC= max(mC, @.k); if t==1 then iterate /*1st pass? */
if k==0 then y= center('zero', length( word(hdr, 1) ) )
else y= '10^'left(k-1,2) "──► 10^"left(k,2) '-1'
say y || right( commas(@.k), 11) copies('─', max(1, (@.k / mC * sw % 1) - LHdr) )
end /*k*/
end /*y*/
say trace off; 'ERASE' work /*perform clean─up (erase a work file).*/ say commas(g) ' files detected, ' commas($) " total bytes." exit /*stick a fork in it, we're all done. */ /*──────────────────────────────────────────────────────────────────────────────────────*/ commas: parse arg _; do j#=length(_)-3 to 1 by -3; _=insert(',', _, j#); end; return _</lang> This REXX program makes use of LINESIZE REXX program (or BIF) which is used to determine the screen width (or linesize) of the terminal (console) so as to maximize the width of the histogram.
The LINESIZE.REX REXX program is included here ──► LINESIZE.REX.
- output when using the default input: (which in this case was the C: homedrive, a Windows/XP system.)
record size range count
══════════════════ ══════════
zero 7,611 ─────────
10^0 ──► 10^1 -1 201 ─
10^1 ──► 10^2 -1 884 ─
10^2 ──► 10^3 -1 4,893 ─
10^3 ──► 10^4 -1 18,344 ─────────────────────────────────────────────────────────────────
10^4 ──► 10^5 -1 13,853 ─────────────────────────────────────────
10^5 ──► 10^6 -1 5,235 ─
10^6 ──► 10^7 -1 968 ─
10^7 ──► 10^8 -1 151 ─
10^8 ──► 10^9 -1 3 ─
10^9 ──► 10^10 -1 1 ─
52,144 files detected, 12,519,430,837 total bytes.
- output when using the default input: (which in this case was the C: homedrive, a Windows 7 system.)
record size range count
══════════════════ ══════════
zero 160 ─
10^0 ──► 10^1 ─1 123 ─
10^1 ──► 10^2 ─1 2,254 ─
10^2 ──► 10^3 ─1 22,752 ─────────
10^3 ──► 10^4 ─1 54,519 ─────────────────────────────────────────────────────────────────
10^4 ──► 10^5 ─1 36,810 ──────────────────────────────────
10^5 ──► 10^6 ─1 17,491 ─
10^6 ──► 10^7 ─1 9,659 ─
10^7 ──► 10^8 ─1 548 ─
10^8 ──► 10^9 ─1 144 ─
10^9 ──► 10^10 ─1 8 ─
10^10 ──► 10^11 ─1 1 ─
144,469 files detected, 118,733,891,020 total bytes.
- output when using the (my) K: drive:
record size range count
══════════════════ ══════════
zero 28 ─
10^0 ──► 10^1 -1 132 ─
10^1 ──► 10^2 -1 812 ─
10^2 ──► 10^3 -1 3,810 ───────────────────────
10^3 ──► 10^4 -1 5,901 ────────────────────────────────────────────────────
10^4 ──► 10^5 -1 6,828 ─────────────────────────────────────────────────────────────────
10^5 ──► 10^6 -1 2,409 ───
10^6 ──► 10^7 -1 231 ─
10^7 ──► 10^8 -1 5 ─
20,156 files detected, 1,569,799,557 total bytes.
Rust
Will search and report on the directory the .exe is in if target is otherwise unspecified.
<lang rust> use std::error::Error; use std::marker::PhantomData; use std::path::{Path, PathBuf}; use std::{env, fmt, io, time}; use walkdir::{DirEntry, WalkDir};
fn main() -> Result<(), Box<dyn Error>> {
let start = time::Instant::now(); let args: Vec<String> = env::args().collect();
let root = parse_path(&args).expect("not a valid path");
let dir = WalkDir::new(&root);
let (files, dirs): (Vec<PathBuf>, Vec<PathBuf>) = {
let pool = pool(dir).expect("unable to retrieve entries from WalkDir");
partition_from(pool).expect("unable to partition files from directories")
};
let (fs_count, dr_count) = (files.len(), dirs.len()); let (file_counter, total_size) = file_count(files);
{
println!("++ File size distribution for : {} ++\n", &root.display());
println!("Files @ 0B : {:4}", file_counter[0]);
println!("Files > 1B - 1,023B : {:4}", file_counter[1]);
println!("Files > 1KB - 1,023KB : {:4}", file_counter[2]);
println!("Files > 1MB - 1,023MB : {:4}", file_counter[3]);
println!("Files > 1GB - 1,023GB : {:4}", file_counter[4]);
println!("Files > 1TB+ : {:4}\n", file_counter[5]);
println!("Files encountered: {}", fs_count);
println!("Directories traversed: {}", dr_count);
println!(
"Total size of all files: {}\n",
Filesize::<Kilobytes>::from(total_size)
);
}
let end = time::Instant::now();
println!("Run time: {:?}\n", end.duration_since(start));
Ok(())
}
fn parse_path(args: &[String]) -> Result<&Path, io::Error> {
// If there's no `args` entered, the executable will search it's own path.
match args.len() {
1 => Ok(Path::new(&args[0])),
_ => Ok(Path::new(&args[1])),
}
}
fn pool(dir: WalkDir) -> Result<Vec<DirEntry>, Box<dyn Error>> {
// Check each item for errors and drop possible invalid `DirEntry`s Ok(dir.into_iter().filter_map(|e| e.ok()).collect())
}
fn partition_from(pool: Vec<DirEntry>) -> Result<(Vec<PathBuf>, Vec<PathBuf>), Box<dyn Error>> {
// Read `Path` from `DirEntry`, checking if `Path` is a file or directory.
Ok(pool
.into_iter()
.map(|e| e.into_path())
.partition(|path| path.is_file()))
}
fn file_count(files: Vec<PathBuf>) -> ([u64; 6], u64) {
let mut counter: [u64; 6] = [0; 6];
for file in &files {
match Filesize::<Bytes>::from(file).bytes {
0 => counter[0] += 1, // Empty file
1..=1_023 => counter[1] += 1, // 1 byte to 0.99KB
1_024..=1_048_575 => counter[2] += 1, // 1 kilo to 0.99MB
1_048_576..=1_073_741_823 => counter[3] += 1, // 1 mega to 0.99GB
1_073_741_824..=1_099_511_627_775 => counter[4] += 1, // 1 giga to 0.99TB
1_099_511_627_776..=std::u64::MAX => counter[5] += 1, // 1 terabyte or larger
}
}
let total_file_size = files
.iter()
.fold(0, |acc, file| acc + Filesize::<Bytes>::from(file).bytes);
(counter, total_file_size)
}
trait SizeUnit: Copy {
fn singular_name() -> String; fn num_byte_in_unit() -> u64;
}
- [derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug)]
struct Bytes; impl SizeUnit for Bytes {
fn singular_name() -> String {
"B".to_string()
}
fn num_byte_in_unit() -> u64 {
1
}
}
- [derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug)]
struct Kilobytes; impl SizeUnit for Kilobytes {
fn singular_name() -> String {
"KB".to_string()
}
fn num_byte_in_unit() -> u64 {
1_024
}
}
- [derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug)]
struct Filesize<T: SizeUnit> {
bytes: u64, unit: PhantomData<T>,
}
impl<T> From<u64> for Filesize<T> where
T: SizeUnit,
{
fn from(n: u64) -> Self {
Filesize {
bytes: n * T::num_byte_in_unit(),
unit: PhantomData,
}
}
}
impl<T> From<Filesize<T>> for u64 where
T: SizeUnit,
{
fn from(fsz: Filesize<T>) -> u64 {
((fsz.bytes as f64) / (T::num_byte_in_unit() as f64)) as u64
}
}
impl<T> fmt::Display for Filesize<T> where
T: SizeUnit,
{
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
// convert value in associated units to float
let size_val = ((self.bytes as f64) / (T::num_byte_in_unit() as f64)) as u64;
// plural?
let name_plural = match size_val {
1 => "",
_ => "s",
};
write!(
f,
"{} {}{}",
(self.bytes as f64) / (T::num_byte_in_unit() as f64),
T::singular_name(),
name_plural
)
}
}
// Can be expanded for From<File>, or any type that has an alias for Metadata impl<T> From<&PathBuf> for Filesize<T> where
T: SizeUnit,
{
fn from(f: &PathBuf) -> Self {
Filesize {
bytes: f
.metadata()
.expect("error with metadata from pathbuf into filesize")
.len(),
unit: PhantomData,
}
}
} </lang>
- Output:
++ File size distribution for : .\Documents ++ Files @ 0B : 956 Files > 1B - 1,023B : 3724 Files > 1KB - 1,023KB : 4511 Files > 1MB - 1,023MB : 930 Files > 1GB - 1,023GB : 0 Files > 1TB+ : 0 Files encountered: 10121 Directories traversed: 2057 Total size of all files: 5264133277 KBs Run time: 1.5671626s
Sidef
<lang ruby>func traverse(Block callback, Dir dir) {
dir.open(\var dir_h) || return nil
for entry in (dir_h.entries) {
if (entry.kind_of(Dir)) {
traverse(callback, entry)
} else {
callback(entry)
}
}
} var dir = (ARGV ? Dir(ARGV[0]) : Dir.cwd)
var group = Hash() var files_num = 0 var total_size = 0
traverse({ |file|
group{file.size+1 -> log10.round} := 0 += 1
total_size += file.size
files_num += 1
}, dir)
for k,v in (group.sort_by { |k,_| Num(k) }) {
say "log10(size) ~~ #{k} -> #{v} files"
}
say "Total: #{total_size} bytes in #{files_num} files"</lang>
- Output:
$ sidef script.sf /usr/bin log10(size) ~~ 1 -> 4 files log10(size) ~~ 2 -> 70 files log10(size) ~~ 3 -> 246 files log10(size) ~~ 4 -> 1337 files log10(size) ~~ 5 -> 815 files log10(size) ~~ 6 -> 167 files log10(size) ~~ 7 -> 9 files log10(size) ~~ 8 -> 2 files Total: 370026462 bytes in 2650 files
zkl
<lang zkl>pipe:=Thread.Pipe();
// hoover all files in tree, don't return directories
fcn(pipe,dir){ File.globular(dir,"*",True,8,pipe); } .launch(pipe,vm.arglist[0]); // thread
dist,N,SZ,maxd:=List.createLong(50,0),0,0,0; foreach fnm in (pipe){
sz,szd:=File.len(fnm), sz.numDigits; dist[szd]+=1; N+=1; SZ+=sz; maxd=maxd.max(szd);
} println("Found %d files, %,d bytes, %,d mean.".fmt(N,SZ,SZ/N)); scale:=50.0/(0.0).max(dist); szchrs,idx,comma:=",nnn"*20, -1, Walker.cycle(0,0,1).next; println("%15s %s (* = %.2f)".fmt("File size","Number of files",1.0/scale)); foreach sz,cnt in ([0..].zip(dist[0,maxd])){
println("%15s : %s".fmt(szchrs[idx,*], "*"*(scale*cnt).round().toInt()));
idx-=1 + comma();
}</lang>
- Output:
$ zkl flSzDist.zkl ..
Found 1832 files, 108,667,806 bytes, 59,316 mean.
File size Number of files (* = 13.44)
n : *
nn : ***
nnn : ********
n,nnn : **********************************
nn,nnn : **************************************************
nnn,nnn : ********************************
n,nnn,nnn : *******
$ zkl flSzDist.zkl /media/Tunes/
Found 4320 files, 67,627,849,052 bytes, 15,654,594 mean.
File size Number of files (* = 69.84)
n :
nn :
nnn :
n,nnn : *
nn,nnn :
nnn,nnn :
n,nnn,nnn : *
nn,nnn,nnn : **************************************************
nnn,nnn,nnn : ********
n,nnn,nnn,nnn : *