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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
/* ######################################################################
Simple wrapper around a std::set to provide a similar interface to
a set of cache structures as to the complete set of all structures
in the pkgCache. Currently only Package is supported.
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
#include <apt-pkg/aptconfiguration.h>
#include <apt-pkg/error.h>
#include <apt-pkg/cacheset.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/versionmatch.h>
#include <apti18n.h>
#include <vector>
#include <regex.h>
/*}}}*/
namespace APT {
// FromRegEx - Return all packages in the cache matching a pattern /*{{{*/
PackageSet PackageSet::FromRegEx(pkgCacheFile &Cache, std::string pattern, std::ostream &out) {
PackageSet pkgset;
std::string arch = "native";
static const char * const isregex = ".?+*|[^$";
if (pattern.find_first_of(isregex) == std::string::npos)
return pkgset;
size_t archfound = pattern.find_last_of(':');
if (archfound != std::string::npos) {
arch = pattern.substr(archfound+1);
if (arch.find_first_of(isregex) == std::string::npos)
pattern.erase(archfound);
else
arch = "native";
}
regex_t Pattern;
int Res;
if ((Res = regcomp(&Pattern, pattern.c_str() , REG_EXTENDED | REG_ICASE | REG_NOSUB)) != 0) {
char Error[300];
regerror(Res, &Pattern, Error, sizeof(Error));
_error->Error(_("Regex compilation error - %s"), Error);
return pkgset;
}
for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp)
{
if (regexec(&Pattern, Grp.Name(), 0, 0, 0) != 0)
continue;
pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
if (Pkg.end() == true) {
if (archfound == std::string::npos) {
std::vector<std::string> archs = APT::Configuration::getArchitectures();
for (std::vector<std::string>::const_iterator a = archs.begin();
a != archs.end() && Pkg.end() != true; ++a)
Pkg = Grp.FindPkg(*a);
}
if (Pkg.end() == true)
continue;
}
ioprintf(out, _("Note, selecting %s for regex '%s'\n"),
Pkg.FullName(true).c_str(), pattern.c_str());
pkgset.insert(Pkg);
}
regfree(&Pattern);
return pkgset;
}
/*}}}*/
// FromCommandLine - Return all packages specified on commandline /*{{{*/
PackageSet PackageSet::FromCommandLine(pkgCacheFile &Cache, const char **cmdline, std::ostream &out) {
PackageSet pkgset;
for (const char **I = cmdline; *I != 0; ++I) {
PackageSet pset = FromString(Cache, *I, out);
pkgset.insert(pset.begin(), pset.end());
}
return pkgset;
}
/*}}}*/
// FromString - Return all packages matching a specific string /*{{{*/
PackageSet PackageSet::FromString(pkgCacheFile &Cache, const char * const str, std::ostream &out) {
pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(str);
if (Grp.end() == false) {
pkgCache::PkgIterator Pkg = Grp.FindPreferredPkg();
PackageSet pkgset;
pkgset.insert(Pkg);
return pkgset;
}
PackageSet regex = FromRegEx(Cache, str, out);
if (regex.empty() == true)
_error->Warning(_("Unable to locate package %s"), str);
return regex;
}
/*}}}*/
// FromCommandLine - Return all versions specified on commandline /*{{{*/
APT::VersionSet VersionSet::FromCommandLine(pkgCacheFile &Cache, const char **cmdline,
APT::VersionSet::Version const &fallback, std::ostream &out) {
VersionSet verset;
for (const char **I = cmdline; *I != 0; ++I) {
std::string pkg = *I;
std::string ver;
bool verIsRel = false;
size_t const vertag = pkg.find_last_of("/=");
if (vertag != string::npos) {
ver = pkg.substr(vertag+1);
verIsRel = (pkg[vertag] == '/');
pkg.erase(vertag);
}
PackageSet pkgset = PackageSet::FromString(Cache, pkg.c_str(), out);
for (PackageSet::const_iterator P = pkgset.begin();
P != pkgset.end(); ++P) {
if (vertag != string::npos) {
pkgVersionMatch Match(ver, (verIsRel == true ? pkgVersionMatch::Release :
pkgVersionMatch::Version));
pkgCache::VerIterator V = Match.Find(P);
if (V.end() == true) {
if (verIsRel == true)
_error->Error(_("Release '%s' for '%s' was not found"),
ver.c_str(), P.FullName(true).c_str());
else
_error->Error(_("Version '%s' for '%s' was not found"),
ver.c_str(), P.FullName(true).c_str());
continue;
}
if (strcmp(ver.c_str(), V.VerStr()) != 0)
ioprintf(out, _("Selected version %s (%s) for %s\n"),
V.VerStr(), V.RelStr().c_str(), P.FullName(true).c_str());
verset.insert(V);
} else {
pkgCache::VerIterator V;
switch(fallback) {
case VersionSet::ALL:
for (V = P.VersionList(); V.end() != true; ++V)
verset.insert(V);
break;
case VersionSet::CANDANDINST:
verset.insert(getInstalledVer(Cache, P));
verset.insert(getCandidateVer(Cache, P));
break;
case VersionSet::CANDIDATE:
verset.insert(getCandidateVer(Cache, P));
break;
case VersionSet::INSTALLED:
verset.insert(getInstalledVer(Cache, P));
break;
case VersionSet::CANDINST:
V = getCandidateVer(Cache, P, true);
if (V.end() == true)
V = getInstalledVer(Cache, P, true);
if (V.end() == false)
verset.insert(V);
else
_error->Error(_("Can't select installed nor candidate version from package %s as it has neither of them"), P.FullName(true).c_str());
break;
case VersionSet::INSTCAND:
V = getInstalledVer(Cache, P, true);
if (V.end() == true)
V = getCandidateVer(Cache, P, true);
if (V.end() == false)
verset.insert(V);
else
_error->Error(_("Can't select installed nor candidate version from package %s as it has neither of them"), P.FullName(true).c_str());
break;
case VersionSet::NEWEST:
if (P->VersionList != 0)
verset.insert(P.VersionList());
else
_error->Error(_("Can't select newest version from package %s as it is purely virtual"), P.FullName(true).c_str());
break;
}
}
}
}
return verset;
}
/*}}}*/
// getCandidateVer - Returns the candidate version of the given package /*{{{*/
pkgCache::VerIterator VersionSet::getCandidateVer(pkgCacheFile &Cache,
pkgCache::PkgIterator const &Pkg, bool const &AllowError) {
if (unlikely(Cache.BuildDepCache() == false))
return pkgCache::VerIterator(*Cache);
pkgCache::VerIterator Cand = Cache[Pkg].InstVerIter(Cache);
if (AllowError == false && Cand.end() == true)
_error->Error(_("Can't select candidate version from package %s as it has no candidate"), Pkg.FullName(true).c_str());
return Cand;
}
/*}}}*/
// getInstalledVer - Returns the installed version of the given package /*{{{*/
pkgCache::VerIterator VersionSet::getInstalledVer(pkgCacheFile &Cache,
pkgCache::PkgIterator const &Pkg, bool const &AllowError) {
if (AllowError == false && Pkg->CurrentVer == 0)
_error->Error(_("Can't select installed version from package %s as it is not installed"), Pkg.FullName(true).c_str());
return Pkg.CurrentVer();
}
/*}}}*/
}
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