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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: cachefile.cc,v 1.8 2002/04/27 04:28:04 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 /*{{{*/
#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>
#include <apt-pkg/policy.h>
#include <apt-pkg/pkgsystem.h>
#include <apt-pkg/acquire-item.h>
#include <apt-pkg/fileutl.h>
#include <apti18n.h>
/*}}}*/
// CacheFile::CacheFile - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgCacheFile::pkgCacheFile() : Map(0), Cache(0), DCache(0), Policy(0)
{
}
/*}}}*/
// CacheFile::~CacheFile - Destructor /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgCacheFile::~pkgCacheFile()
{
delete DCache;
delete Policy;
delete Cache;
delete Map;
_system->UnLock(true);
}
/*}}}*/
// CacheFile::BuildCaches - Open and build the cache files /*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgCacheFile::BuildCaches(OpProgress &Progress,bool WithLock)
{
const bool ErrorWasEmpty = _error->empty();
if (WithLock == true)
if (_system->Lock() == false)
return false;
if (_config->FindB("Debug::NoLocking",false) == true)
WithLock = false;
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."));
// Read the caches
bool Res = pkgMakeStatusCache(List,Progress,&Map,!WithLock);
Progress.Done();
if (Res == false)
return _error->Error(_("The package lists or status file could not be parsed or opened."));
/* This sux, remove it someday */
if (ErrorWasEmpty == true && _error->empty() == false)
_error->Warning(_("You may want to run apt-get update to correct these problems"));
Cache = new pkgCache(Map);
if (_error->PendingError() == true)
return false;
return true;
}
/*}}}*/
// CacheFile::Open - Open the cache files, creating if necessary /*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgCacheFile::Open(OpProgress &Progress,bool WithLock)
{
if (BuildCaches(Progress,WithLock) == false)
return false;
// The policy engine
Policy = new pkgPolicy(Cache);
if (_error->PendingError() == true)
return false;
if (ReadPinFile(*Policy) == false || ReadPinDir(*Policy) == false)
return false;
// Create the dependency cache
DCache = new pkgDepCache(Cache,Policy);
if (_error->PendingError() == true)
return false;
DCache->Init(&Progress);
Progress.Done();
if (_error->PendingError() == true)
return false;
return true;
}
/*}}}*/
// CacheFile::Close - close the cache files /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgCacheFile::Close()
{
delete DCache;
delete Policy;
delete Cache;
delete Map;
_system->UnLock(true);
Map = 0;
DCache = 0;
Policy = 0;
Cache = 0;
}
/*}}}*/
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