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* deletePath() now removes the path from the hash2paths mapping.

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This commit is contained in:
Eelco Dolstra 2003-07-08 09:54:47 +00:00
parent ab644ad10b
commit 0b38b43bab
1 changed files with 22 additions and 1 deletions
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23
src/store.cc
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@ -105,6 +105,25 @@ Hash registerPath(const string & _path, Hash hash)
}
void unregisterPath(const string & _path)
{
string path(canonPath(_path));
Hash hash = hashPath(path);
Strings paths, paths2;
queryListDB(nixDB, dbHash2Paths, hash, paths); /* non-existence = ok */
bool changed = false;
for (Strings::iterator it = paths.begin();
it != paths.end(); it++)
if (*it != path) paths2.push_back(*it); else changed = true;
if (changed)
setListDB(nixDB, dbHash2Paths, hash, paths2);
}
bool isInPrefix(const string & path, const string & _prefix)
{
string prefix = canonPath(_prefix + "/");
@ -171,6 +190,8 @@ void deleteFromStore(const string & path)
string prefix = nixStore + "/";
if (string(path, 0, prefix.size()) != prefix)
throw Error(format("path %1% is not in the store") % path);
unregisterPath(path);
deletePath(path);
// delDB(nixDB, dbHash2Paths, hash);
}