// -*- mode: cpp; mode: fold -*- // Description /*{{{*/ // $Id: cachefile.cc,v 1.4 1999/06/24 04:06:30 jgg Exp $ /* ###################################################################### CacheFile - Simple wrapper class for opening, generating and whatnot This class implements a simple 2 line mechanism to open various sorts of caches. It can operate as root, as not root, show progress and so on, it transparently handles everything necessary. ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ #ifdef __GNUG__ #pragma implementation "apt-pkg/cachefile.h" #endif #include <apt-pkg/cachefile.h> #include <apt-pkg/error.h> #include <apt-pkg/sourcelist.h> #include <apt-pkg/pkgcachegen.h> #include <apt-pkg/configuration.h> /*}}}*/ // CacheFile::CacheFile - Constructor /*{{{*/ // --------------------------------------------------------------------- /* */ pkgCacheFile::pkgCacheFile() : Map(0), Cache(0), Lock(0) { } /*}}}*/ // CacheFile::~CacheFile - Destructor /*{{{*/ // --------------------------------------------------------------------- /* */ pkgCacheFile::~pkgCacheFile() { delete Cache; delete Map; delete Lock; } /*}}}*/ // CacheFile::Open - Open the cache files, creating if necessary /*{{{*/ // --------------------------------------------------------------------- /* */ bool pkgCacheFile::Open(OpProgress &Progress,bool WithLock) { if (WithLock == true) Lock = new pkgDpkgLock; if (_error->PendingError() == true) return false; // Read the source list pkgSourceList List; if (List.ReadMainList() == false) return _error->Error("The list of sources could not be read."); /* Build all of the caches, using the cache files if we are locking (ie as root) */ if (WithLock == true) { pkgMakeStatusCache(List,Progress); Progress.Done(); if (_error->PendingError() == true) return _error->Error("The package lists or status file could not be parsed or opened."); if (_error->empty() == false) _error->Warning("You may want to run apt-get update to correct these missing files"); // Open the cache file FileFd File(_config->FindFile("Dir::Cache::pkgcache"),FileFd::ReadOnly); if (_error->PendingError() == true) return false; Map = new MMap(File,MMap::Public | MMap::ReadOnly); if (_error->PendingError() == true) return false; } else { Map = pkgMakeStatusCacheMem(List,Progress); Progress.Done(); if (Map == 0) return false; } // Create the dependency cache Cache = new pkgDepCache(*Map,Progress); Progress.Done(); if (_error->PendingError() == true) return false; return true; } /*}}}*/