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/* rpackagecache.cc - package cache wrapper
*
* Copyright (c) 2000-2003 Conectiva S/A
*
* Author: Alfredo K. Kojima <kojima@conectiva.com.br>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include "config.h"
#include "rpackagecache.h"
#include "rconfiguration.h"
#include "i18n.h"
#include <assert.h>
#include <algorithm>
#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>
bool RPackageCache::open(OpProgress &progress, bool locking)
{
if(locking)
lock();
if (_error->PendingError())
return false;
// delete any old structures
if(_dcache)
delete _dcache;
if(_policy)
delete _policy;
if(_cache)
delete _cache;
if(_map)
delete _map;
// Read the source list
//pkgSourceList list;
assert(_list != NULL);
if (!_list->ReadMainList())
return _error->Error(_("The list of sources could not be read.\n"
"Go to the repository dialog to correct the problem."));
if(locking)
pkgMakeStatusCache(*_list, progress);
else
pkgMakeStatusCache(*_list, progress, 0, true);
if (_error->PendingError())
return _error->
Error(_
("The package lists or status file could not be parsed or opened."));
// Open the cache file
FileFd File;
File.Open(_config->FindFile("Dir::Cache::pkgcache"), FileFd::ReadOnly);
if (_error->PendingError())
return false;
_map = new MMap(File, MMap::Public | MMap::ReadOnly);
if (_error->PendingError())
return false;
// Create the dependency cache
_cache = new pkgCache(_map);
if (_error->PendingError())
return false;
_policy = new pkgPolicy(_cache);
if (_error->PendingError() == true)
return false;
if (ReadPinFile(*_policy) == false)
return false;
if (ReadPinFile(*_policy, RStateDir() + "/preferences") == false)
return false;
_dcache = new pkgDepCache(_cache, _policy);
_dcache->Init(&progress);
//progress.Done();
if (_error->PendingError())
return false;
// Check that the system is OK
if (_dcache->DelCount() != 0 || _dcache->InstCount() != 0)
return _error->Error(_("Internal Error, non-zero counts"));
return true;
}
vector<string> RPackageCache::getPolicyArchives(bool filenames_only=false)
{
//std::cout << "RPackageCache::getPolicyComponents() " << std::endl;
vector<string> archives;
for (pkgCache::PkgFileIterator F = _cache->FileBegin(); F.end() == false;
F++) {
pkgIndexFile *Indx;
_list->FindIndex(F, Indx);
_system->FindIndex(F, Indx);
if(filenames_only) {
if(F.FileName())
archives.push_back(F.FileName());
} else {
if (!F.RelStr().empty()) {
//printf("Archive: %s, Origin: %s, Component: %s, Filename: %s\n",
// F.Archive(), F.Origin(), F.Component(), F.FileName());
if (F.Archive() != NULL) {
if (find(archives.begin(), archives.end(), F.Archive())
== archives.end()) {
archives.push_back(F.Archive());
}
}
}
}
}
return archives;
}
bool RPackageCache::lock()
{
if (_locked)
return true;
_system->Lock();
_locked = true;
//FIXME: should depend on the result of _system->lock()
return true;
}
void RPackageCache::releaseLock()
{
if (!_locked)
return;
_system->UnLock();
_locked = false;
}
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