9530cc3170
* Start cleaning up unique store path generation (they weren't always
unique; in particular the suffix ("-aterm-2.2", "-builder.sh") was
not part of the hash, therefore changes to the suffix would cause
multiple store objects with the same hash).
62 lines
1.3 KiB
C++
62 lines
1.3 KiB
C++
#ifndef __HASH_H
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#define __HASH_H
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#include <string>
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#include "util.hh"
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using namespace std;
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typedef enum { htMD5, htSHA1, htSHA256 } HashType;
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const int md5HashSize = 16;
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const int sha1HashSize = 20;
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const int sha256HashSize = 32;
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struct Hash
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{
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static const unsigned int maxHashSize = 32;
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unsigned int hashSize;
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unsigned char hash[maxHashSize];
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HashType type;
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/* Create a zeroed hash object. */
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Hash(HashType type);
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/* Check whether two hash are equal. */
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bool operator == (const Hash & h2) const;
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/* Check whether two hash are not equal. */
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bool operator != (const Hash & h2) const;
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/* For sorting. */
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bool operator < (const Hash & h) const;
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/* Convert a hash code into a hexadecimal representation. */
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operator string() const;
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};
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/* Parse a hexadecimal representation of a hash code. */
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Hash parseHash(const string & s);
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/* Verify that the given string is a valid hash code. */
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bool isHash(const string & s);
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/* Compute the hash of the given string. */
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Hash hashString(const string & s, HashType ht);
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/* Compute the hash of the given file. */
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Hash hashFile(const Path & path, HashType ht);
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/* Compute the hash of the given path. The hash is defined as
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md5(dump(path)). */
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Hash hashPath(const Path & path, HashType ht);
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#endif /* !__HASH_H */
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