about summary refs log tree commit diff
path: root/src/libnix/hash.hh
blob: 0062f987c021d400ee8af6c6cf6005b70396ad15 (plain) (blame)
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
#ifndef __HASH_H
#define __HASH_H

#include <string>

#include "util.hh"

using namespace std;


struct Hash
{
    static const unsigned int hashSize = 16;
    unsigned char hash[hashSize];

    /* Create a zeroed hash object. */
    Hash();

    /* Check whether two hash are equal. */
    bool operator == (const Hash & h2) const;

    /* Check whether two hash are not equal. */
    bool operator != (const Hash & h2) const;

    /* For sorting. */
    bool operator < (const Hash & h) const;

    /* Convert a hash code into a hexadecimal representation. */
    operator string() const;
};


/* Parse a hexadecimal representation of a hash code. */
Hash parseHash(const string & s);

/* Verify that the given string is a valid hash code. */
bool isHash(const string & s);

/* Compute the hash of the given string. */
Hash hashString(const string & s);

/* Compute the hash of the given file. */
Hash hashFile(const Path & path);

/* Compute the hash of the given path.  The hash is defined as
   md5(dump(path)).
*/
Hash hashPath(const Path & path);


#endif /* !__HASH_H */