lix/src/store.hh
Eelco Dolstra f5b6fa5256 * Basic work on allowing derive expressions to build multiple paths.
This is not entirely trivial since this introduces the possibility
  of mutual recursion.
* Made normal forms self-contained.
* Use unique ids, not content hashes, for content referencing.
2003-07-15 16:28:54 +00:00

40 lines
1 KiB
C++

#ifndef __STORE_H
#define __STORE_H
#include <string>
#include "hash.hh"
using namespace std;
typedef Hash FSId;
/* Copy a path recursively. */
void copyPath(string src, string dst);
/* Register a substitute. */
void registerSubstitute(const FSId & srcId, const FSId & subId);
/* Register a path keyed on its id. */
void registerPath(const string & path, const FSId & id);
/* 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. */
string expandId(const FSId & id, 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, FSId & id,
bool deterministicName = false);
/* Delete a value from the nixStore directory. */
void deleteFromStore(const string & path);
#endif /* !__STORE_H */