X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/e74ff795d39894268c737c4b1864869dadb74ed1..864a3375f7bf0b3772f4f2ae212b802f6cab5ff9:/apt-pkg/pkgcache.cc diff --git a/apt-pkg/pkgcache.cc b/apt-pkg/pkgcache.cc index 1de33ff9b..5088712a2 100644 --- a/apt-pkg/pkgcache.cc +++ b/apt-pkg/pkgcache.cc @@ -8,7 +8,7 @@ Please see doc/apt-pkg/cache.sgml for a more detailed description of this format. Also be sure to keep that file up-to-date!! - This is the general utility functions for cache managment. They provide + This is the general utility functions for cache management. They provide a complete set of accessor functions for the cache. The cacheiterators header contains the STL-like iterators that can be used to easially navigate the cache as well as seemlessly dereference the mmap'd @@ -29,12 +29,15 @@ #include #include #include +#include #include +#include +#include +#include +#include #include #include -#include -#include #include /*}}}*/ @@ -51,8 +54,12 @@ pkgCache::Header::Header() /* Whenever the structures change the major version should be bumped, whenever the generator changes the minor version should be bumped. */ - MajorVersion = 8; - MinorVersion = 0; + MajorVersion = 9; +#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13) + MinorVersion = 2; +#else + MinorVersion = 1; +#endif Dirty = false; HeaderSz = sizeof(pkgCache::Header); @@ -182,18 +189,17 @@ unsigned long pkgCache::sHash(const string &Str) const { unsigned long Hash = 0; for (string::const_iterator I = Str.begin(); I != Str.end(); ++I) - Hash = 5*Hash + tolower_ascii(*I); + Hash = 41 * Hash + tolower_ascii(*I); return Hash % _count(HeaderP->PkgHashTable); } unsigned long pkgCache::sHash(const char *Str) const { - unsigned long Hash = 0; - for (const char *I = Str; *I != 0; ++I) - Hash = 5*Hash + tolower_ascii(*I); + unsigned long Hash = tolower_ascii(*Str); + for (const char *I = Str + 1; *I != 0; ++I) + Hash = 41 * Hash + tolower_ascii(*I); return Hash % _count(HeaderP->PkgHashTable); } - /*}}}*/ // Cache::SingleArchFindPkg - Locate a package by name /*{{{*/ // --------------------------------------------------------------------- @@ -206,9 +212,14 @@ pkgCache::PkgIterator pkgCache::SingleArchFindPkg(const string &Name) Package *Pkg = PkgP + HeaderP->PkgHashTable[Hash(Name)]; for (; Pkg != PkgP; Pkg = PkgP + Pkg->NextPackage) { - if (Pkg->Name != 0 && StrP[Pkg->Name] == Name[0] && - stringcasecmp(Name,StrP + Pkg->Name) == 0) - return PkgIterator(*this,Pkg); + if (unlikely(Pkg->Name == 0)) + continue; + + int const cmp = strcasecmp(Name.c_str(), StrP + Pkg->Name); + if (cmp == 0) + return PkgIterator(*this, Pkg); + else if (cmp < 0) + break; } return PkgIterator(*this,0); } @@ -265,9 +276,14 @@ pkgCache::GrpIterator pkgCache::FindGrp(const string &Name) { // Look at the hash bucket for the group Group *Grp = GrpP + HeaderP->GrpHashTable[sHash(Name)]; for (; Grp != GrpP; Grp = GrpP + Grp->Next) { - if (Grp->Name != 0 && StrP[Grp->Name] == Name[0] && - stringcasecmp(Name, StrP + Grp->Name) == 0) + if (unlikely(Grp->Name == 0)) + continue; + + int const cmp = strcasecmp(Name.c_str(), StrP + Grp->Name); + if (cmp == 0) return GrpIterator(*this, Grp); + else if (cmp < 0) + break; } return GrpIterator(*this,0); @@ -279,22 +295,22 @@ pkgCache::GrpIterator pkgCache::FindGrp(const string &Name) { type in the weird debian style.. */ const char *pkgCache::CompTypeDeb(unsigned char Comp) { - const char *Ops[] = {"","<=",">=","<<",">>","=","!="}; - if ((unsigned)(Comp & 0xF) < 7) - return Ops[Comp & 0xF]; - return ""; + const char * const Ops[] = {"","<=",">=","<<",">>","=","!="}; + if (unlikely((unsigned)(Comp & 0xF) >= sizeof(Ops)/sizeof(Ops[0]))) + return ""; + return Ops[Comp & 0xF]; } /*}}}*/ // Cache::CompType - Return a string describing the compare type /*{{{*/ // --------------------------------------------------------------------- -/* This returns a string representation of the dependency compare +/* This returns a string representation of the dependency compare type */ const char *pkgCache::CompType(unsigned char Comp) { - const char *Ops[] = {"","<=",">=","<",">","=","!="}; - if ((unsigned)(Comp & 0xF) < 7) - return Ops[Comp & 0xF]; - return ""; + const char * const Ops[] = {"","<=",">=","<",">","=","!="}; + if (unlikely((unsigned)(Comp & 0xF) >= sizeof(Ops)/sizeof(Ops[0]))) + return ""; + return Ops[Comp & 0xF]; } /*}}}*/ // Cache::DepType - Return a string describing the dep type /*{{{*/ @@ -405,7 +421,7 @@ pkgCache::PkgIterator pkgCache::GrpIterator::NextPkg(pkgCache::PkgIterator const // GrpIterator::operator ++ - Postfix incr /*{{{*/ // --------------------------------------------------------------------- /* This will advance to the next logical group in the hash table. */ -void pkgCache::GrpIterator::operator ++(int) +void pkgCache::GrpIterator::operator ++(int) { // Follow the current links if (S != Owner->GrpP) @@ -417,12 +433,12 @@ void pkgCache::GrpIterator::operator ++(int) HashIndex++; S = Owner->GrpP + Owner->HeaderP->GrpHashTable[HashIndex]; } -}; +} /*}}}*/ // PkgIterator::operator ++ - Postfix incr /*{{{*/ // --------------------------------------------------------------------- /* This will advance to the next logical package in the hash table. */ -void pkgCache::PkgIterator::operator ++(int) +void pkgCache::PkgIterator::operator ++(int) { // Follow the current links if (S != Owner->PkgP) @@ -434,7 +450,7 @@ void pkgCache::PkgIterator::operator ++(int) HashIndex++; S = Owner->PkgP + Owner->HeaderP->PkgHashTable[HashIndex]; } -}; +} /*}}}*/ // PkgIterator::State - Check the State of the package /*{{{*/ // --------------------------------------------------------------------- @@ -466,31 +482,31 @@ pkgCache::PkgIterator::OkState pkgCache::PkgIterator::State() const // --------------------------------------------------------------------- /* Return string representing of the candidate version. */ const char * -pkgCache::PkgIterator::CandVersion() const +pkgCache::PkgIterator::CandVersion() const { //TargetVer is empty, so don't use it. VerIterator version = pkgPolicy(Owner).GetCandidateVer(*this); if (version.IsGood()) return version.VerStr(); return 0; -}; +} /*}}}*/ // PkgIterator::CurVersion - Returns the current version string /*{{{*/ // --------------------------------------------------------------------- /* Return string representing of the current version. */ const char * -pkgCache::PkgIterator::CurVersion() const +pkgCache::PkgIterator::CurVersion() const { VerIterator version = CurrentVer(); if (version.IsGood()) return CurrentVer().VerStr(); return 0; -}; +} /*}}}*/ // ostream operator to handle string representation of a package /*{{{*/ // --------------------------------------------------------------------- /* Output name < cur.rent.version -> candid.ate.version | new.est.version > (section) - Note that the characters <|>() are all literal above. Versions will be ommited + Note that the characters <|>() are all literal above. Versions will be omitted if they provide no new information (e.g. there is no newer version than candidate) If no version and/or section can be found "none" is used. */ std::ostream& @@ -625,8 +641,7 @@ pkgCache::Version **pkgCache::DepIterator::AllTargets() const { if (IsIgnorable(I.ParentPkg()) == true) continue; - - if (Owner->VS->CheckDep(I.VerStr(),S->CompareOp,TargetVer()) == false) + if (IsSatisfied(I) == false) continue; Size++; @@ -639,8 +654,7 @@ pkgCache::Version **pkgCache::DepIterator::AllTargets() const { if (IsIgnorable(I) == true) continue; - - if (Owner->VS->CheckDep(I.ProvideVersion(),S->CompareOp,TargetVer()) == false) + if (IsSatisfied(I) == false) continue; Size++; @@ -688,7 +702,7 @@ void pkgCache::DepIterator::GlobOr(DepIterator &Start,DepIterator &End) // --------------------------------------------------------------------- /* Deps like self-conflicts should be ignored as well as implicit conflicts on virtual packages. */ -bool pkgCache::DepIterator::IsIgnorable(PkgIterator const &Pkg) const +bool pkgCache::DepIterator::IsIgnorable(PkgIterator const &/*Pkg*/) const { if (IsNegative() == false) return false; @@ -748,6 +762,16 @@ bool pkgCache::DepIterator::IsMultiArchImplicit() const return false; } /*}}}*/ +// DepIterator::IsSatisfied - check if a version satisfied the dependency /*{{{*/ +bool pkgCache::DepIterator::IsSatisfied(VerIterator const &Ver) const +{ + return Owner->VS->CheckDep(Ver.VerStr(),S->CompareOp,TargetVer()); +} +bool pkgCache::DepIterator::IsSatisfied(PrvIterator const &Prv) const +{ + return Owner->VS->CheckDep(Prv.ProvideVersion(),S->CompareOp,TargetVer()); +} + /*}}}*/ // ostream operator to handle string representation of a dependecy /*{{{*/ // --------------------------------------------------------------------- /* */ @@ -907,6 +931,18 @@ string pkgCache::VerIterator::RelStr() const return Res; } /*}}}*/ +// VerIterator::MultiArchType - string representing MultiArch flag /*{{{*/ +const char * pkgCache::VerIterator::MultiArchType() const +{ + if ((S->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same) + return "same"; + else if ((S->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign) + return "foreign"; + else if ((S->MultiArch & pkgCache::Version::Allowed) == pkgCache::Version::Allowed) + return "allowed"; + return "none"; +} + /*}}}*/ // PkgFileIterator::IsOk - Checks if the cache is in sync with the file /*{{{*/ // --------------------------------------------------------------------- /* This stats the file and compares its stats with the ones that were @@ -949,7 +985,7 @@ string pkgCache::PkgFileIterator::RelStr() /*}}}*/ // VerIterator::TranslatedDescription - Return the a DescIter for locale/*{{{*/ // --------------------------------------------------------------------- -/* return a DescIter for the current locale or the default if none is +/* return a DescIter for the current locale or the default if none is * found */ pkgCache::DescIterator pkgCache::VerIterator::TranslatedDescription() const @@ -983,7 +1019,7 @@ pkgCache::DescIterator pkgCache::VerIterator::TranslatedDescription() const if (strcmp(Desc.LanguageCode(), "") == 0) return Desc; return DescriptionList(); -}; +} /*}}}*/ // PrvIterator::IsMultiArchImplicit - added by the cache generation /*{{{*/