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#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;
};
class BadRefError : public Error
{
public:
BadRefError(string _err) : Error(_err) { };
};
/* 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 string & fileName);
/* Compute the hash of the given path. The hash is defined as
md5(dump(path)).
*/
Hash hashPath(const string & path);
#endif /* !__HASH_H */
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