#include <time.h>
#include <stdint.h>
+#ifdef APT_PKG_EXPOSE_STRING_VIEW
+#include <apt-pkg/string_view.h>
+#endif
+
#ifndef APT_8_CLEANER_HEADERS
using std::string;
#endif
+// size of (potentially big) files like debs or the install size of them
+typedef uint64_t map_filesize_t;
// storing file sizes of indexes, which are way below 4 GB for now
-typedef uint32_t map_filesize_t;
+typedef uint32_t map_filesize_small_t;
// each package/group/dependency gets an id
typedef uint32_t map_id_t;
// some files get an id, too, but in far less absolute numbers
typedef uint32_t map_pointer_t;
// same as the previous, but documented to be to a string item
typedef map_pointer_t map_stringitem_t;
+// we have only a small amount of flags for each item
+typedef uint8_t map_flags_t;
+typedef uint8_t map_number_t;
class pkgVersioningSystem;
class pkgCache /*{{{*/
struct Header;
struct Group;
struct Package;
+ struct ReleaseFile;
struct PackageFile;
struct Version;
struct Description;
struct Provides;
struct Dependency;
+ struct DependencyData;
struct StringItem;
struct VerFile;
struct DescFile;
class DescIterator;
class DepIterator;
class PrvIterator;
+ class RlsFileIterator;
class PkgFileIterator;
class VerFileIterator;
class DescFileIterator;
The lower 4 bits are used to indicate what operator is being specified and
the upper 4 bits are flags. OR indicates that the next package is
or'd with the current package. */
- enum DepCompareOp {Or=0x10,NoOp=0,LessEq=0x1,GreaterEq=0x2,Less=0x3,
- Greater=0x4,Equals=0x5,NotEquals=0x6};
+ enum DepCompareOp {NoOp=0,LessEq=0x1,GreaterEq=0x2,Less=0x3,
+ Greater=0x4,Equals=0x5,NotEquals=0x6,
+ Or=0x10, /*!< or'ed with the next dependency */
+ MultiArchImplicit=0x20, /*!< generated internally, not spelled out in the index */
+ ArchSpecific=0x40 /*!< was decorated with an explicit architecture in index */
+ };
};
struct State
struct Flag
{
enum PkgFlags {Auto=(1<<0),Essential=(1<<3),Important=(1<<4)};
- enum PkgFFlags {NotSource=(1<<0),NotAutomatic=(1<<1),ButAutomaticUpgrades=(1<<2)};
+ enum PkgFFlags {
+ NotSource=(1<<0), /*!< packages can't be fetched from here, e.g. dpkg/status file */
+ LocalSource=(1<<1), /*!< local sources can't and will not be verified by hashes */
+ NoPackages=(1<<2), /*!< the file includes no package records itself, but additions like Translations */
+ };
+ enum ReleaseFileFlags {
+ NotAutomatic=(1<<0), /*!< archive has a default pin of 1 */
+ ButAutomaticUpgrades=(1<<1), /*!< (together with the previous) archive has a default pin of 100 */
+ };
+ enum ProvidesFlags {
+ MultiArchImplicit=pkgCache::Dep::MultiArchImplicit, /*!< generated internally, not spelled out in the index */
+ ArchSpecific=pkgCache::Dep::ArchSpecific /*!< was decorated with an explicit architecture in index */
+ };
};
protected:
// Memory mapped cache file
std::string CacheFile;
MMap ⤅
-
+#ifdef APT_PKG_EXPOSE_STRING_VIEW
+ APT_HIDDEN map_id_t sHash(APT::StringView S) const APT_PURE;
+#endif
map_id_t sHash(const std::string &S) const APT_PURE;
map_id_t sHash(const char *S) const APT_PURE;
Package *PkgP;
VerFile *VerFileP;
DescFile *DescFileP;
+ ReleaseFile *RlsFileP;
PackageFile *PkgFileP;
Version *VerP;
Description *DescP;
Provides *ProvideP;
Dependency *DepP;
- StringItem *StringItemP;
+ DependencyData *DepDataP;
+ APT_DEPRECATED_MSG("Not used anymore in cache generation and without a replacement") StringItem *StringItemP;
char *StrP;
virtual bool ReMap(bool const &Errorchecks = true);
inline void *DataEnd() {return ((unsigned char *)Map.Data()) + Map.Size();}
// String hashing function (512 range)
+#ifdef APT_PKG_EXPOSE_STRING_VIEW
+ APT_HIDDEN inline map_id_t Hash(APT::StringView S) const {return sHash(S);}
+#endif
inline map_id_t Hash(const std::string &S) const {return sHash(S);}
inline map_id_t Hash(const char *S) const {return sHash(S);}
+ APT_HIDDEN uint32_t CacheHash();
+
// Useful transformation things
- const char *Priority(unsigned char Priority);
+ static const char *Priority(unsigned char Priority);
// Accessors
+#ifdef APT_PKG_EXPOSE_STRING_VIEW
+ APT_HIDDEN GrpIterator FindGrp(APT::StringView Name);
+ APT_HIDDEN PkgIterator FindPkg(APT::StringView Name);
+ APT_HIDDEN PkgIterator FindPkg(APT::StringView Name, APT::StringView Arch);
+#endif
+
+#ifdef APT_PKG_EXPOSE_STRING_VIEW
+ APT::StringView ViewString(map_stringitem_t idx) const
+ {
+ char *name = StrP + idx;
+ uint16_t len = *reinterpret_cast<const uint16_t*>(name - sizeof(uint16_t));
+ return APT::StringView(name, len);
+ }
+#endif
+
+
GrpIterator FindGrp(const std::string &Name);
PkgIterator FindPkg(const std::string &Name);
PkgIterator FindPkg(const std::string &Name, const std::string &Arch);
inline PkgIterator PkgEnd();
inline PkgFileIterator FileBegin();
inline PkgFileIterator FileEnd();
+ inline RlsFileIterator RlsFileBegin();
+ inline RlsFileIterator RlsFileEnd();
inline bool MultiArchCache() const { return MultiArchEnabled; }
inline char const * NativeArch();
static const char *CompTypeDeb(unsigned char Comp) APT_CONST;
static const char *CompType(unsigned char Comp) APT_CONST;
static const char *DepType(unsigned char Dep);
-
+
pkgCache(MMap *Map,bool DoMap = true);
- virtual ~pkgCache() {}
+ virtual ~pkgCache();
private:
+ void * const d;
bool MultiArchEnabled;
- PkgIterator SingleArchFindPkg(const std::string &Name);
};
/*}}}*/
// Header structure /*{{{*/
This must contain the hex value 0x98FE76DC which is designed to
verify that the system loading the image has the same byte order
and byte size as the system saving the image */
- unsigned long Signature;
+ uint32_t Signature;
/** These contain the version of the cache file */
- short MajorVersion;
- short MinorVersion;
+ map_number_t MajorVersion;
+ map_number_t MinorVersion;
/** \brief indicates if the cache should be erased
Dirty is true if the cache file was opened for reading, the client
If any of the size values do not exactly match what the client expects
then the client should refuse the load the file. */
- unsigned short HeaderSz;
- unsigned short GroupSz;
- unsigned short PackageSz;
- unsigned short PackageFileSz;
- unsigned short VersionSz;
- unsigned short DescriptionSz;
- unsigned short DependencySz;
- unsigned short ProvidesSz;
- unsigned short VerFileSz;
- unsigned short DescFileSz;
+ uint16_t HeaderSz;
+ map_number_t GroupSz;
+ map_number_t PackageSz;
+ map_number_t ReleaseFileSz;
+ map_number_t PackageFileSz;
+ map_number_t VersionSz;
+ map_number_t DescriptionSz;
+ map_number_t DependencySz;
+ map_number_t DependencyDataSz;
+ map_number_t ProvidesSz;
+ map_number_t VerFileSz;
+ map_number_t DescFileSz;
/** \brief Structure counts
map_id_t VersionCount;
map_id_t DescriptionCount;
map_id_t DependsCount;
+ map_id_t DependsDataCount;
+ map_fileid_t ReleaseFileCount;
map_fileid_t PackageFileCount;
map_fileid_t VerFileCount;
map_fileid_t DescFileCount;
The PackageFile structures are singly linked lists that represent
all package files that have been merged into the cache. */
map_pointer_t FileList;
- /** \brief index of the first StringItem structure
+ /** \brief index of the first ReleaseFile structure */
+ map_pointer_t RlsFileList;
- The cache contains a list of all the unique strings (StringItems).
- The parser reads this list into memory so it can match strings
- against it.*/
- map_pointer_t StringList;
/** \brief String representing the version system used */
map_pointer_t VerSysName;
/** \brief native architecture the cache was built against */
the same number of pools as there are structure types. The generator
stores this information so future additions can make use of any unused pool
blocks. */
- DynamicMMap::Pool Pools[9];
+ DynamicMMap::Pool Pools[12];
/** \brief hash tables providing rapid group/package name lookup
In the PkgHashTable is it possible that multiple packages have the same name -
these packages are stored as a sequence in the list.
The size of both tables is the same. */
- unsigned int HashTableSize;
- map_pointer_t * PkgHashTable() const { return (map_pointer_t*) (this + 1); }
- map_pointer_t * GrpHashTable() const { return PkgHashTable() + HashTableSize; }
+ uint32_t HashTableSize;
+ uint32_t GetHashTableSize() const { return HashTableSize; }
+ void SetHashTableSize(unsigned int const sz) { HashTableSize = sz; }
+ map_pointer_t GetArchitectures() const { return Architectures; }
+ void SetArchitectures(map_pointer_t const idx) { Architectures = idx; }
+ map_pointer_t * PkgHashTableP() const { return (map_pointer_t*) (this + 1); }
+ map_pointer_t * GrpHashTableP() const { return PkgHashTableP() + GetHashTableSize(); }
- /** \brief Size of the complete cache file */
- unsigned long long CacheFileSize;
+ /** \brief Hash of the file (TODO: Rename) */
+ map_filesize_small_t CacheFileSize;
bool CheckSizes(Header &Against) const APT_PURE;
Header();
*/
struct pkgCache::Package
{
- /** \brief Name of the package */
- map_stringitem_t Name;
+ /** \brief Name of the package
+ * Note that the access method Name() will remain. It is just this data member
+ * deprecated as this information is already stored and available via the
+ * associated Group – so it is wasting precious binary cache space */
+ APT_DEPRECATED_MSG("Use the .Name() method instead of accessing the member directly") map_stringitem_t Name;
/** \brief Architecture of the package */
map_stringitem_t Arch;
/** \brief Base of a singly linked list of versions
// Linked list
/** \brief Link to the next package in the same bucket */
- map_pointer_t Next; // Package
+ map_pointer_t NextPackage; // Package
/** \brief List of all dependencies on this package */
map_pointer_t RevDepends; // Dependency
/** \brief List of all "packages" this package provide */
// Install/Remove/Purge etc
/** \brief state that the user wishes the package to be in */
- unsigned char SelectedState; // What
+ map_number_t SelectedState; // What
/** \brief installation state of the package
This should be "ok" but in case the installation failed
it will be different.
*/
- unsigned char InstState; // Flags
+ map_number_t InstState; // Flags
/** \brief indicates if the package is installed */
- unsigned char CurrentState; // State
+ map_number_t CurrentState; // State
/** \brief unique sequel ID
this to track which packages have been emitted already. */
map_id_t ID;
/** \brief some useful indicators of the package's state */
- unsigned long Flags;
+ map_flags_t Flags;
};
/*}}}*/
-// Package File structure /*{{{*/
-/** \brief stores information about the files used to generate the cache
+// Release File structure /*{{{*/
+/** \brief stores information about the release files used to generate the cache
- Package files are referenced by Version structures to be able to know
- after the generation still from which Packages file includes this Version
- as we need this information later on e.g. for pinning. */
-struct pkgCache::PackageFile
+ PackageFiles reference ReleaseFiles as we need to keep record of which
+ version belongs to which release e.g. for pinning. */
+struct pkgCache::ReleaseFile
{
- /** \brief physical disk file that this PackageFile represents */
- map_pointer_t FileName; // StringItem
+ /** \brief physical disk file that this ReleaseFile represents */
+ map_stringitem_t FileName;
/** \brief the release information
Please see the files document for a description of what the
release information means. */
map_stringitem_t Archive;
map_stringitem_t Codename;
- map_stringitem_t Component;
map_stringitem_t Version;
map_stringitem_t Origin;
map_stringitem_t Label;
- map_stringitem_t Architecture;
/** \brief The site the index file was fetched from */
map_stringitem_t Site;
+
+ /** \brief Size of the file
+
+ Used together with the modification time as a
+ simple check to ensure that the Packages
+ file has not been altered since Cache generation. */
+ map_filesize_t Size;
+ /** \brief Modification time for the file */
+ time_t mtime;
+
+ /** @TODO document PackageFile::Flags */
+ map_flags_t Flags;
+
+ // Linked list
+ /** \brief Link to the next ReleaseFile in the Cache */
+ map_pointer_t NextFile;
+ /** \brief unique sequel ID */
+ map_fileid_t ID;
+};
+ /*}}}*/
+// Package File structure /*{{{*/
+/** \brief stores information about the files used to generate the cache
+
+ Package files are referenced by Version structures to be able to know
+ after the generation still from which Packages file includes this Version
+ as we need this information later on e.g. for pinning. */
+struct pkgCache::PackageFile
+{
+ /** \brief physical disk file that this PackageFile represents */
+ map_stringitem_t FileName;
+ /** \brief the release information */
+ map_pointer_t Release;
+
+ map_stringitem_t Component;
+ map_stringitem_t Architecture;
+
/** \brief indicates what sort of index file this is
@TODO enumerate at least the possible indexes */
time_t mtime;
/** @TODO document PackageFile::Flags */
- unsigned long Flags;
+ map_flags_t Flags;
// Linked list
/** \brief Link to the next PackageFile in the Cache */
The version list is always sorted from highest version to lowest
version by the generator. Equal version numbers are either merged
or handled as separate versions based on the Hash value. */
+APT_IGNORE_DEPRECATED_PUSH
struct pkgCache::Version
{
/** \brief complete version string */
map_stringitem_t VerStr;
/** \brief section this version is filled in */
map_stringitem_t Section;
+ /** \brief source package name this version comes from
+ Always contains the name, even if it is the same as the binary name */
+ map_stringitem_t SourcePkgName;
+ /** \brief source version this version comes from
+ Always contains the version string, even if it is the same as the binary version */
+ map_stringitem_t SourceVerStr;
/** \brief Multi-Arch capabilities of a package version */
- enum VerMultiArch { None = 0, /*!< is the default and doesn't trigger special behaviour */
+ enum VerMultiArch { No = 0, /*!< is the default and doesn't trigger special behaviour */
All = (1<<0), /*!< will cause that Ver.Arch() will report "all" */
Foreign = (1<<1), /*!< can satisfy dependencies in another architecture */
Same = (1<<2), /*!< can be co-installed with itself from other architectures */
Allowed = (1<<3), /*!< other packages are allowed to depend on thispkg:any */
AllForeign = All | Foreign,
AllAllowed = All | Allowed };
+
+ /** \brief deprecated variant of No */
+ static const APT_DEPRECATED_MSG("The default value of the Multi-Arch field is no, not none") VerMultiArch None = No;
+
/** \brief stores the MultiArch capabilities of this version
Flags used are defined in pkgCache::Version::VerMultiArch
*/
- unsigned char MultiArch;
+ map_number_t MultiArch;
/** \brief references all the PackageFile's that this version came from
/** \brief archive size for this version
For Debian this is the size of the .deb file. */
- uint64_t Size; // These are the .deb size
+ map_filesize_t Size; // These are the .deb size
/** \brief uncompressed size for this version */
- uint64_t InstalledSize;
+ map_filesize_t InstalledSize;
/** \brief characteristic value representing this version
No two packages in existence should have the same VerStr
/** \brief unique sequel ID */
map_id_t ID;
/** \brief parsed priority value */
- unsigned char Priority;
+ map_number_t Priority;
};
+APT_IGNORE_DEPRECATED_POP
/*}}}*/
// Description structure /*{{{*/
/** \brief datamember of a linked list of available description for a version */
The base of the linked list is pkgCache::Version::DependsList.
All forms of dependencies are recorded here including Depends,
Recommends, Suggests, Enhances, Conflicts, Replaces and Breaks. */
-struct pkgCache::Dependency
+struct pkgCache::DependencyData
{
/** \brief string of the version the dependency is applied against */
- map_stringitem_t Version; // StringItem
+ map_stringitem_t Version;
/** \brief index of the package this depends applies to
The generator will - if the package does not already exist -
create a blank (no version records) package. */
map_pointer_t Package; // Package
- /** \brief next dependency of this version */
- map_pointer_t NextDepends; // Dependency
- /** \brief next reverse dependency of this package */
- map_pointer_t NextRevDepends; // Dependency
- /** \brief version of the package which has the reverse depends */
- map_pointer_t ParentVer; // Version
- /** \brief unique sequel ID */
- map_id_t ID;
/** \brief Dependency type - Depends, Recommends, Conflicts, etc */
- unsigned char Type;
+ map_number_t Type;
/** \brief comparison operator specified on the depends line
If the high bit is set then it is a logical OR with the previous record. */
- unsigned char CompareOp;
+ map_flags_t CompareOp;
+
+ map_pointer_t NextData;
+};
+struct pkgCache::Dependency
+{
+ map_pointer_t DependencyData; // DependencyData
+ /** \brief version of the package which has the depends */
+ map_pointer_t ParentVer; // Version
+ /** \brief next reverse dependency of this package */
+ map_pointer_t NextRevDepends; // Dependency
+ /** \brief next dependency of this version */
+ map_pointer_t NextDepends; // Dependency
+
+ /** \brief unique sequel ID */
+ map_id_t ID;
};
/*}}}*/
// Provides structure /*{{{*/
/** \brief version in the provides line (if any)
This version allows dependencies to depend on specific versions of a
- Provides, as well as allowing Provides to override existing packages.
- This is experimental. Note that Debian doesn't allow versioned provides */
+ Provides, as well as allowing Provides to override existing packages. */
map_stringitem_t ProvideVersion;
+ map_flags_t Flags;
/** \brief next provides (based of package) */
map_pointer_t NextProvides; // Provides
/** \brief next provides (based of version) */
map_pointer_t NextPkgProv; // Provides
};
/*}}}*/
-// StringItem structure /*{{{*/
-/** \brief used for generating single instances of strings
-
- Some things like Section Name are are useful to have as unique tags.
- It is part of a linked list based at pkgCache::Header::StringList
-
- All strings are simply inlined any place in the file that is natural
- for the writer. The client should make no assumptions about the positioning
- of strings. All StringItems should be null-terminated. */
-struct pkgCache::StringItem
+// UNUSED StringItem structure /*{{{*/
+struct APT_DEPRECATED_MSG("No longer used in cache generation without a replacement") pkgCache::StringItem
{
/** \brief string this refers to */
- map_stringitem_t String;
+ map_ptrloc String; // StringItem
/** \brief Next link in the chain */
- map_stringitem_t NextItem;
+ map_ptrloc NextItem; // StringItem
};
/*}}}*/
-
inline char const * pkgCache::NativeArch()
{ return StrP + HeaderP->Architecture; }
{return PkgFileIterator(*this,PkgFileP + HeaderP->FileList);}
inline pkgCache::PkgFileIterator pkgCache::FileEnd()
{return PkgFileIterator(*this,PkgFileP);}
+inline pkgCache::RlsFileIterator pkgCache::RlsFileBegin()
+ {return RlsFileIterator(*this,RlsFileP + HeaderP->RlsFileList);}
+inline pkgCache::RlsFileIterator pkgCache::RlsFileEnd()
+ {return RlsFileIterator(*this,RlsFileP);}
+
// Oh I wish for Real Name Space Support
class pkgCache::Namespace /*{{{*/
typedef pkgCache::DescIterator DescIterator;
typedef pkgCache::DepIterator DepIterator;
typedef pkgCache::PrvIterator PrvIterator;
+ typedef pkgCache::RlsFileIterator RlsFileIterator;
typedef pkgCache::PkgFileIterator PkgFileIterator;
typedef pkgCache::VerFileIterator VerFileIterator;
typedef pkgCache::Version Version;
projects / apt.git / blobdiff