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
#include <apt-pkg/strutl.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/aptconfiguration.h>
+#include <apt-pkg/mmap.h>
#include <apt-pkg/macros.h>
+#include <stddef.h>
+#include <string.h>
+#include <ostream>
+#include <vector>
#include <string>
#include <sys/stat.h>
-#include <unistd.h>
-#include <ctype.h>
#include <apti18n.h>
/*}}}*/
/* Whenever the structures change the major version should be bumped,
whenever the generator changes the minor version should be bumped. */
- MajorVersion = 8;
+ MajorVersion = 10;
MinorVersion = 0;
Dirty = false;
StringList = 0;
VerSysName = 0;
Architecture = 0;
- memset(PkgHashTable,0,sizeof(PkgHashTable));
- memset(GrpHashTable,0,sizeof(GrpHashTable));
+ HashTableSize = _config->FindI("APT::Cache-HashTableSize", 10 * 1048);
memset(Pools,0,sizeof(Pools));
CacheFileSize = 0;
if (Map.Size() < HeaderP->CacheFileSize)
return _error->Error(_("The package cache file is corrupted, it is too small"));
+ if (HeaderP->VerSysName == 0 || HeaderP->Architecture == 0 || HeaderP->Architectures == 0)
+ return _error->Error(_("The package cache file is corrupted"));
+
// Locate our VS..
- if (HeaderP->VerSysName == 0 ||
- (VS = pkgVersioningSystem::GetVS(StrP + HeaderP->VerSysName)) == 0)
+ if ((VS = pkgVersioningSystem::GetVS(StrP + HeaderP->VerSysName)) == 0)
return _error->Error(_("This APT does not support the versioning system '%s'"),StrP + HeaderP->VerSysName);
- // Chcek the arhcitecture
- if (HeaderP->Architecture == 0 ||
- _config->Find("APT::Architecture") != StrP + HeaderP->Architecture)
- return _error->Error(_("The package cache was built for a different architecture"));
+ // Check the architecture
+ std::vector<std::string> archs = APT::Configuration::getArchitectures();
+ std::vector<std::string>::const_iterator a = archs.begin();
+ std::string list = *a;
+ for (++a; a != archs.end(); ++a)
+ list.append(",").append(*a);
+ if (_config->Find("APT::Architecture") != StrP + HeaderP->Architecture ||
+ list != StrP + HeaderP->Architectures)
+ return _error->Error(_("The package cache was built for different architectures: %s vs %s"), StrP + HeaderP->Architectures, list.c_str());
+
return true;
}
/*}}}*/
/* This is used to generate the hash entries for the HashTable. With my
package list from bo this function gets 94% table usage on a 512 item
table (480 used items) */
-unsigned long pkgCache::sHash(const string &Str) const
+map_id_t 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);
- return Hash % _count(HeaderP->PkgHashTable);
+ Hash = 41 * Hash + tolower_ascii(*I);
+ return Hash % HeaderP->HashTableSize;
}
-unsigned long pkgCache::sHash(const char *Str) const
+map_id_t pkgCache::sHash(const char *Str) const
{
- unsigned long Hash = 0;
- for (const char *I = Str; *I != 0; ++I)
- Hash = 5*Hash + tolower_ascii(*I);
- return Hash % _count(HeaderP->PkgHashTable);
+ unsigned long Hash = tolower_ascii(*Str);
+ for (const char *I = Str + 1; *I != 0; ++I)
+ Hash = 41 * Hash + tolower_ascii(*I);
+ return Hash % HeaderP->HashTableSize;
}
-
/*}}}*/
// Cache::SingleArchFindPkg - Locate a package by name /*{{{*/
// ---------------------------------------------------------------------
pkgCache::PkgIterator pkgCache::SingleArchFindPkg(const string &Name)
{
// Look at the hash bucket
- Package *Pkg = PkgP + HeaderP->PkgHashTable[Hash(Name)];
- for (; Pkg != PkgP; Pkg = PkgP + Pkg->NextPackage)
+ Package *Pkg = PkgP + HeaderP->PkgHashTable()[Hash(Name)];
+ for (; Pkg != PkgP; Pkg = PkgP + Pkg->Next)
{
- 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);
}
return GrpIterator(*this,0);
// Look at the hash bucket for the group
- Group *Grp = GrpP + HeaderP->GrpHashTable[sHash(Name)];
+ 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);
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 /*{{{*/
(= different packages with same calculated hash),
so we need to check the name also */
for (pkgCache::Package *Pkg = PackageList(); Pkg != Owner->PkgP;
- Pkg = Owner->PkgP + Pkg->NextPackage) {
+ Pkg = Owner->PkgP + Pkg->Next) {
if (S->Name == Pkg->Name &&
stringcasecmp(Arch, Owner->StrP + Pkg->Arch) == 0)
return PkgIterator(*Owner, Pkg);
if (S->LastPackage == LastPkg.Index())
return PkgIterator(*Owner, 0);
- return PkgIterator(*Owner, Owner->PkgP + LastPkg->NextPackage);
+ return PkgIterator(*Owner, Owner->PkgP + LastPkg->Next);
}
/*}}}*/
// 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)
S = Owner->GrpP + S->Next;
// Follow the hash table
- while (S == Owner->GrpP && (HashIndex+1) < (signed)_count(Owner->HeaderP->GrpHashTable))
+ while (S == Owner->GrpP && (HashIndex+1) < (signed)Owner->HeaderP->HashTableSize)
{
HashIndex++;
- S = Owner->GrpP + Owner->HeaderP->GrpHashTable[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)
- S = Owner->PkgP + S->NextPackage;
+ S = Owner->PkgP + S->Next;
// Follow the hash table
- while (S == Owner->PkgP && (HashIndex+1) < (signed)_count(Owner->HeaderP->PkgHashTable))
+ while (S == Owner->PkgP && (HashIndex+1) < (signed)Owner->HeaderP->HashTableSize)
{
HashIndex++;
- S = Owner->PkgP + Owner->HeaderP->PkgHashTable[HashIndex];
+ S = Owner->PkgP + Owner->HeaderP->PkgHashTable()[HashIndex];
}
-};
+}
/*}}}*/
// PkgIterator::State - Check the State of the package /*{{{*/
// ---------------------------------------------------------------------
// ---------------------------------------------------------------------
/* 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&
{
if (IsIgnorable(I.ParentPkg()) == true)
continue;
-
- if (Owner->VS->CheckDep(I.VerStr(),S->CompareOp,TargetVer()) == false)
+ if (IsSatisfied(I) == false)
continue;
Size++;
{
if (IsIgnorable(I) == true)
continue;
-
- if (Owner->VS->CheckDep(I.ProvideVersion(),S->CompareOp,TargetVer()) == false)
+ if (IsSatisfied(I) == false)
continue;
Size++;
// ---------------------------------------------------------------------
/* 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;
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 /*{{{*/
// ---------------------------------------------------------------------
/* */
// VerIterator::Downloadable - Checks if the version is downloadable /*{{{*/
// ---------------------------------------------------------------------
/* */
-bool pkgCache::VerIterator::Downloadable() const
+APT_PURE bool pkgCache::VerIterator::Downloadable() const
{
VerFileIterator Files = FileList();
for (; Files.end() == false; ++Files)
// ---------------------------------------------------------------------
/* This checks to see if any of the versions files are not NotAutomatic.
True if this version is selectable for automatic installation. */
-bool pkgCache::VerIterator::Automatic() const
+APT_PURE bool pkgCache::VerIterator::Automatic() const
{
VerFileIterator Files = FileList();
for (; Files.end() == false; ++Files)
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
/*}}}*/
// 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
if (strcmp(Desc.LanguageCode(), "") == 0)
return Desc;
return DescriptionList();
-};
+}
/*}}}*/
// PrvIterator::IsMultiArchImplicit - added by the cache generation /*{{{*/
projects / apt.git / blobdiff