diff options
Diffstat (limited to 'apt-pkg/cacheset.cc')
| -rw-r--r-- | apt-pkg/cacheset.cc | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/apt-pkg/cacheset.cc b/apt-pkg/cacheset.cc new file mode 100644 index 000000000..43ade4b4e --- /dev/null +++ b/apt-pkg/cacheset.cc @@ -0,0 +1,280 @@ +// -*- 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; +} + /*}}}*/ +// GroupedFromCommandLine - Return all versions specified on commandline/*{{{*/ +std::map<unsigned short, PackageSet> PackageSet::GroupedFromCommandLine( + pkgCacheFile &Cache, const char **cmdline, + std::list<PackageSet::Modifier> const &mods, + unsigned short const &fallback, std::ostream &out) { + std::map<unsigned short, PackageSet> pkgsets; + for (const char **I = cmdline; *I != 0; ++I) { + unsigned short modID = fallback; + std::string str = *I; + for (std::list<PackageSet::Modifier>::const_iterator mod = mods.begin(); + mod != mods.end(); ++mod) { + size_t const alength = strlen(mod->Alias); + switch(mod->Pos) { + case PackageSet::Modifier::POSTFIX: + if (str.compare(str.length() - alength, alength, + mod->Alias, 0, alength) != 0) + continue; + str.erase(str.length() - alength); + modID = mod->ID; + break; + case PackageSet::Modifier::PREFIX: + continue; + case PackageSet::Modifier::NONE: + continue; + } + break; + } + PackageSet pset = PackageSet::FromString(Cache, str, out); + pkgsets[modID].insert(pset.begin(), pset.end()); + } + return pkgsets; +} + /*}}}*/ +// 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, std::string const &str, std::ostream &out) { + std::string pkg = str; + size_t archfound = pkg.find_last_of(':'); + std::string arch; + if (archfound != std::string::npos) { + arch = pkg.substr(archfound+1); + pkg.erase(archfound); + } + + pkgCache::PkgIterator Pkg; + if (arch.empty() == true) { + pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg); + if (Grp.end() == false) + Pkg = Grp.FindPreferredPkg(); + } else + Pkg = Cache.GetPkgCache()->FindPkg(pkg, arch); + + if (Pkg.end() == false) { + 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.c_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) { + AddSelectedVersion(Cache, verset, P, fallback); + continue; + } + pkgCache::VerIterator V; + if (ver == "installed") + V = getInstalledVer(Cache, P); + else if (ver == "candidate") + V = getCandidateVer(Cache, P); + else { + pkgVersionMatch Match(ver, (verIsRel == true ? pkgVersionMatch::Release : + pkgVersionMatch::Version)); + 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 (V.end() == true) + continue; + if (ver == V.VerStr()) + ioprintf(out, _("Selected version '%s' (%s) for '%s'\n"), + V.VerStr(), V.RelStr().c_str(), P.FullName(true).c_str()); + verset.insert(V); + } + } + return verset; +} + /*}}}*/ +// AddSelectedVersion - add version from package based on fallback /*{{{*/ +bool VersionSet::AddSelectedVersion(pkgCacheFile &Cache, VersionSet &verset, + pkgCache::PkgIterator const &P, VersionSet::Version const &fallback, + bool const &AllowError) { + pkgCache::VerIterator V; + switch(fallback) { + case VersionSet::ALL: + if (P->VersionList != 0) + for (V = P.VersionList(); V.end() != true; ++V) + verset.insert(V); + else if (AllowError == false) + return _error->Error(_("Can't select versions from package '%s' as it purely virtual"), P.FullName(true).c_str()); + else + return false; + break; + case VersionSet::CANDANDINST: + verset.insert(getInstalledVer(Cache, P, AllowError)); + verset.insert(getCandidateVer(Cache, P, AllowError)); + break; + case VersionSet::CANDIDATE: + verset.insert(getCandidateVer(Cache, P, AllowError)); + break; + case VersionSet::INSTALLED: + verset.insert(getInstalledVer(Cache, P, AllowError)); + 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 if (AllowError == false) + return _error->Error(_("Can't select installed nor candidate version from package '%s' as it has neither of them"), P.FullName(true).c_str()); + else + return false; + 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 if (AllowError == false) + return _error->Error(_("Can't select installed nor candidate version from package '%s' as it has neither of them"), P.FullName(true).c_str()); + else + return false; + break; + case VersionSet::NEWEST: + if (P->VersionList != 0) + verset.insert(P.VersionList()); + else if (AllowError == false) + return _error->Error(_("Can't select newest version from package '%s' as it is purely virtual"), P.FullName(true).c_str()); + else + return false; + break; + } + return true; +} + /*}}}*/ +// 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].CandidateVerIter(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(); +} + /*}}}*/ +} |