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/*******************************************************/
/* CUDF solver: cudf_reduction.c */
/* Implementation of problem reductions */
/* (c) Claude Michel I3S (UNSA-CNRS) 2009,2010,2011 */
/*******************************************************/
#include <cudf_reductions.h>
#include <list>
vector<CUDFPropertiesIterator> process_properties; // set of property to process
// Add the virtual package of a vpkglist to the reduced problem
void add_vpkgs_from_vpkglist(list<CUDFVirtualPackage *> &lvpkg, CUDFVpkgList *vpkglist) {
for (CUDFVpkgListIterator ivpkg = vpkglist->begin(); ivpkg != vpkglist->end(); ivpkg++) {
CUDFVirtualPackage *vpkg = (*ivpkg)->virtual_package;
if ((vpkg != (CUDFVirtualPackage *)NULL) && (! vpkg->in_reduced)) lvpkg.push_back(vpkg);
}
}
// Process a vpkgformula (from a depends) adding the related virtual packages to the new problem
void add_vpkgs_from_vpkgformula(list<CUDFVirtualPackage *> &lvpkg, CUDFVpkgFormula *vpkgf) {
for (CUDFVpkgFormulaIterator anddeps = vpkgf->begin(); anddeps != vpkgf->end(); anddeps++)
add_vpkgs_from_vpkglist(lvpkg, *anddeps);
}
// Add a package to the reduced problem
void process_package(CUDFproblem *new_pb, list<CUDFVirtualPackage *> &lvpkg, CUDFVersionedPackage *pkg) {
if (! pkg->in_reduced) {
pkg->in_reduced = true;
new_pb->all_packages->push_back(pkg);
if (pkg->installed)
new_pb->installed_packages->push_back(pkg);
else
new_pb->uninstalled_packages->push_back(pkg);
if (! pkg->virtual_package->in_reduced) lvpkg.push_back(pkg->virtual_package);
if (pkg->depends != (CUDFVpkgFormula *)NULL) add_vpkgs_from_vpkgformula(lvpkg, pkg->depends);
// process properties
for (vector<CUDFPropertiesIterator>::iterator prop = process_properties.begin(); prop != process_properties.end(); prop++)
for (CUDFPropertyValueListIterator propval = pkg->properties.begin(); propval != pkg->properties.end(); propval++)
if ((*propval)->property == (*prop)->second)
switch((*prop)->second->type_id) {
case pt_vpkg:
case pt_veqpkg:
{
CUDFVirtualPackage *vpkg = (*propval)->vpkg->virtual_package;
if (! vpkg->in_reduced) lvpkg.push_back(vpkg);
}
break;
case pt_vpkglist:
case pt_veqpkglist:
add_vpkgs_from_vpkglist(lvpkg, (*propval)->vpkglist);
break;
case pt_vpkgformula:
add_vpkgs_from_vpkgformula(lvpkg, (*propval)->vpkgformula);
break;
default:
break;
}
}
}
// process the virtual package vpkg adding its packages to the reduced problem
void process_vpackage(CUDFproblem *new_pb, list<CUDFVirtualPackage *> &lvpkg, CUDFVirtualPackage *vpkg) {
if (! vpkg->in_reduced) {
vpkg->in_reduced = true;
new_pb->all_virtual_packages->push_back(vpkg);
if (vpkg->all_versions.size() > 0) // all versions
for (CUDFVersionedPackageSetIterator ipkg = vpkg->all_versions.begin(); ipkg != vpkg->all_versions.end(); ipkg++)
process_package(new_pb, lvpkg, (*ipkg));
if (vpkg->providers.size() > 0) // providers
for (CUDFProviderListIterator ipkg = vpkg->providers.begin(); ipkg != vpkg->providers.end(); ipkg++)
process_package(new_pb, lvpkg, (*ipkg));
if (vpkg->versioned_providers.size() > 0) // versioned providers
for (CUDFVersionedProviderListIterator ipkg = vpkg->versioned_providers.begin(); ipkg != vpkg->versioned_providers.end(); ipkg++)
for (CUDFProviderListIterator kpkg = ipkg->second.begin(); kpkg != ipkg->second.end(); kpkg++)
process_package(new_pb, lvpkg, (*kpkg));
}
}
// Do compute a reduced version of the problem
CUDFproblem *compute_reduced_CUDF(CUDFproblem *problem) {
list<CUDFVirtualPackage *> lvpkg;
CUDFproblem *new_pb = new CUDFproblem();
if (verbosity > 0)
PRINT_OUT("Initial size: %" CUDFsizet"u packages (%" CUDFsizet"u installed, %" CUDFsizet"u uninstalled), %" CUDFsizet"u virtual packages\n",
problem->all_packages->size(), problem->installed_packages->size(), problem->uninstalled_packages->size(),
problem->all_virtual_packages->size());
new_pb->properties = problem->properties;
new_pb->all_packages = new CUDFVersionedPackageList();
new_pb->installed_packages = new CUDFVersionedPackageList();;
new_pb->uninstalled_packages = new CUDFVersionedPackageList();;
new_pb->all_virtual_packages = new CUDFVirtualPackageList();
new_pb->install = problem->install;
new_pb->remove = problem->remove;
new_pb->upgrade = problem->upgrade;
for (CUDFVersionedPackageListIterator ipkg = problem->all_packages->begin(); ipkg != problem->all_packages->end(); ipkg++)
(*ipkg)->in_reduced = false;
for (CUDFVirtualPackageListIterator ipkg = problem->all_virtual_packages->begin(); ipkg != problem->all_virtual_packages->end(); ipkg++)
(*ipkg)->in_reduced = false;
// process all virtual packages of installed versioned packages
for (CUDFVersionedPackageListIterator ipkg = problem->installed_packages->begin(); ipkg != problem->installed_packages->end(); ipkg++)
process_vpackage(new_pb, lvpkg, (*ipkg)->virtual_package);
// add virtual packages from install request
if (problem->install != (CUDFVpkgList *)NULL) add_vpkgs_from_vpkglist(lvpkg, problem->install);
// add virtual packages from upgrade request
if (problem->upgrade != (CUDFVpkgList *)NULL) add_vpkgs_from_vpkglist(lvpkg, problem->upgrade);
// add virtual packages from remove request (the remove might act only on a subset of the version ...)
// the problem only arise when the related packages are not installed in the initial configuration
if (problem->remove != (CUDFVpkgList *)NULL) add_vpkgs_from_vpkglist(lvpkg, problem->remove);
// process pending virtual packages
for (list<CUDFVirtualPackage *>::iterator ivpkg = lvpkg.begin(); ivpkg != lvpkg.end(); ivpkg++)
process_vpackage(new_pb, lvpkg, (*ivpkg));
if (verbosity > 0)
PRINT_OUT("Final size: %" CUDFsizet"u packages (%" CUDFsizet"u installed, %" CUDFsizet"u uninstalled), %" CUDFsizet"u virtual packages\n",
new_pb->all_packages->size(), new_pb->installed_packages->size(), new_pb->uninstalled_packages->size(),
new_pb->all_virtual_packages->size());
// Recompute ranks
{
int rank = 0;
for (CUDFVersionedPackageListIterator ipkg = new_pb->all_packages->begin(); ipkg != new_pb->all_packages->end(); ipkg++, rank++)
(*ipkg)->rank = rank;
rank = 0;
for (CUDFVirtualPackageListIterator ivpkg = new_pb->all_virtual_packages->begin();
ivpkg != new_pb->all_virtual_packages->end(); ivpkg++, rank++)
(*ivpkg)->rank = rank;
}
return new_pb;
}
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