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#ifndef __VALUES_H
#define __VALUES_H
#include <string>
#include "hash.hh"
using namespace std;
/* Copy a path recursively. */
void copyPath(string src, string dst);
/* Register a substitute. */
void registerSubstitute(const Hash & srcHash, const Hash & subHash);
/* Register a path keyed on its hash. */
Hash registerPath(const string & path, Hash hash = Hash());
/* Return a path whose contents have the given hash. If target is
not empty, ensure that such a path is realised in target (if
necessary by copying from another location). If prefix is not
empty, only return a path that is an descendent of prefix.
If no path with the given hash is known to exist in the file
system,
*/
string expandHash(const Hash & hash, const string & target = "",
const string & prefix = "/");
/* Copy a file to the nixStore directory and register it in dbRefs.
Return the hash code of the value. */
void addToStore(string srcPath, string & dstPath, Hash & hash);
/* Delete a value from the nixStore directory. */
void deleteFromStore(const string & path);
#endif /* !__VALUES_H */
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