1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
// Copyright 2024 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#define _CRT_SECURE_NO_WARNINGS
#include <boost/hash2/md5.hpp>
#include <array>
#include <string>
#include <cerrno>
#include <cstdio>
static void md5sum( std::FILE* f, char const* fn )
{
boost::hash2::md5_128 hash;
int const N = 4096;
unsigned char buffer[ N ];
for( ;; )
{
std::size_t n = std::fread( buffer, 1, N, f );
if( std::ferror( f ) )
{
std::fprintf( stderr, "'%s': read error: %s\n", fn, std::strerror( errno ) );
return;
}
if( n == 0 ) break;
hash.update( buffer, n );
}
std::string digest = to_string( hash.result() );
std::printf( "%s *%s\n", digest.c_str(), fn );
}
int main( int argc, char const* argv[] )
{
for( int i = 1; i < argc; ++i )
{
std::FILE* f = std::fopen( argv[i], "rb" );
if( f == 0 )
{
std::fprintf( stderr, "'%s': open error: %s\n", argv[i], std::strerror( errno ) );
continue;
}
md5sum( f, argv[i] );
std::fclose( f );
}
}
|
