support compression and by-hash for .diff/Index files

[apt.git] / apt-pkg / pkgcachegen.h

diff --git a/apt-pkg/pkgcachegen.h b/apt-pkg/pkgcachegen.h
index d275c1e4290ee9f22b0558fae9871cb16146c827..228b9f71dab392eae854964bf8cd293230761e8f 100644 (file)
--- a/apt-pkg/pkgcachegen.h
+++ b/apt-pkg/pkgcachegen.h
@@ -1,6 +1,5 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/

-// $Id: pkgcachegen.h,v 1.19 2002/07/08 03:13:30 jgg Exp $

 /* ######################################################################
    
    Package Cache Generator - Generator for the cache structure.
 /* ######################################################################
    
    Package Cache Generator - Generator for the cache structure.


@@ -27,37 +26,78 @@
 
 #include <vector>
 #include <string>
 
 #include <vector>
 #include <string>

+#if __cplusplus >= 201103L
+#include <unordered_set>
+#endif
+#ifdef APT_PKG_EXPOSE_STRING_VIEW
+#include <apt-pkg/string_view.h>
+#endif

 
 class FileFd;
 class pkgSourceList;
 class OpProgress;
 class pkgIndexFile;
 
 class FileFd;
 class pkgSourceList;
 class OpProgress;
 class pkgIndexFile;

+class pkgCacheListParser;

 
 

-class pkgCacheGenerator                                                        /*{{{*/
+class APT_HIDDEN pkgCacheGenerator                                     /*{{{*/

 {
 {

-   private:
+   APT_HIDDEN map_stringitem_t WriteStringInMap(std::string const &String) { return WriteStringInMap(String.c_str()); };
+   APT_HIDDEN map_stringitem_t WriteStringInMap(const char *String);
+   APT_HIDDEN map_stringitem_t WriteStringInMap(const char *String, const unsigned long &Len);
+   APT_HIDDEN map_pointer_t AllocateInMap(const unsigned long &size);
+
+   // Dirty hack for public users that do not use C++11 yet
+#if __cplusplus >= 201103L
+   struct string_pointer {
+      const char *data_;
+      size_t size;
+      pkgCacheGenerator *generator;
+      map_stringitem_t item;
+
+      const char *data() const {
+        return data_ != nullptr ? data_ : static_cast<char*>(generator->Map.Data()) + item;
+      }
+
+      bool operator ==(string_pointer const &other) const {
+        return size == other.size && memcmp(data(), other.data(), size) == 0;
+      }
+   };
+   struct hash {
+      uint32_t operator()(string_pointer const &that) const {
+        uint32_t Hash = 5381;
+        const char * const end = that.data() + that.size;
+        for (const char *I = that.data(); I != end; ++I)
+           Hash = 33 * Hash + *I;
+        return Hash;
+      }
+   };
+
+   std::unordered_set<string_pointer, hash> strMixed;
+   std::unordered_set<string_pointer, hash> strPkgNames;
+   std::unordered_set<string_pointer, hash> strVersions;
+   std::unordered_set<string_pointer, hash> strSections;
+#endif

 
 

-   pkgCache::StringItem *UniqHash[26];
-   APT_HIDDEN map_ptrloc WriteStringInMap(std::string const &String) { return WriteStringInMap(String.c_str()); };
-   APT_HIDDEN map_ptrloc WriteStringInMap(const char *String);
-   APT_HIDDEN map_ptrloc WriteStringInMap(const char *String, const unsigned long &Len);
-   APT_HIDDEN map_ptrloc AllocateInMap(const unsigned long &size);
+   friend class pkgCacheListParser;
+   typedef pkgCacheListParser ListParser;

 
    public:
 
    public:

-   
-   class ListParser;
-   friend class ListParser;

 
    template<typename Iter> class Dynamic {
       public:
       static std::vector<Iter*> toReMap;
 
    template<typename Iter> class Dynamic {
       public:
       static std::vector<Iter*> toReMap;

-      Dynamic(Iter &I) {
+      explicit Dynamic(Iter &I) {

         toReMap.push_back(&I);
       }
 
       ~Dynamic() {
         toReMap.pop_back();
       }
         toReMap.push_back(&I);
       }
 
       ~Dynamic() {
         toReMap.pop_back();
       }

+
+#if __cplusplus >= 201103L
+      Dynamic(const Dynamic&) = delete;
+      void operator=(const Dynamic&) = delete;
+#endif

    };
 
    protected:
    };
 
    protected:


@@ -65,105 +105,117 @@ class pkgCacheGenerator                                                  /*{{{*/
    DynamicMMap &Map;
    pkgCache Cache;
    OpProgress *Progress;
    DynamicMMap &Map;
    pkgCache Cache;
    OpProgress *Progress;

-   
+
+   std::string RlsFileName;
+   pkgCache::ReleaseFile *CurrentRlsFile;

    std::string PkgFileName;
    pkgCache::PackageFile *CurrentFile;
 
    std::string PkgFileName;
    pkgCache::PackageFile *CurrentFile;
 

-   // Flag file dependencies
-   bool FoundFileDeps;
-   
-   bool NewGroup(pkgCache::GrpIterator &Grp,const std::string &Name);
-   bool NewPackage(pkgCache::PkgIterator &Pkg,const std::string &Name, const std::string &Arch);
+#ifdef APT_PKG_EXPOSE_STRING_VIEW
+   bool NewGroup(pkgCache::GrpIterator &Grp, APT::StringView Name);
+   bool NewPackage(pkgCache::PkgIterator &Pkg, APT::StringView Name, APT::StringView Arch);
+   map_pointer_t NewVersion(pkgCache::VerIterator &Ver, APT::StringView const &VerStr,
+                           map_pointer_t const ParentPkg, unsigned short const Hash,
+                           map_pointer_t const Next);
+#endif

    bool NewFileVer(pkgCache::VerIterator &Ver,ListParser &List);
    bool NewFileDesc(pkgCache::DescIterator &Desc,ListParser &List);
    bool NewDepends(pkgCache::PkgIterator &Pkg, pkgCache::VerIterator &Ver,
    bool NewFileVer(pkgCache::VerIterator &Ver,ListParser &List);
    bool NewFileDesc(pkgCache::DescIterator &Desc,ListParser &List);
    bool NewDepends(pkgCache::PkgIterator &Pkg, pkgCache::VerIterator &Ver,

-                  std::string const &Version, unsigned int const &Op,
-                  unsigned int const &Type, map_ptrloc* &OldDepLast);
-   bool NewDepends(pkgCache::PkgIterator &Pkg, pkgCache::VerIterator &Ver,
-                  map_ptrloc const Version, unsigned int const &Op,
-                  unsigned int const &Type, map_ptrloc* &OldDepLast);
-   unsigned long NewVersion(pkgCache::VerIterator &Ver,const std::string &VerStr,unsigned long Next) APT_DEPRECATED
-   { return NewVersion(Ver, VerStr, 0, 0, Next); }
-   unsigned long NewVersion(pkgCache::VerIterator &Ver,const std::string &VerStr,
-                           map_ptrloc const ParentPkg, unsigned long const Hash,
-                           unsigned long Next);
-   map_ptrloc NewDescription(pkgCache::DescIterator &Desc,const std::string &Lang,const MD5SumValue &md5sum,map_ptrloc Next);
+                  map_pointer_t const Version, uint8_t const Op,
+                  uint8_t const Type, map_pointer_t* &OldDepLast);
+   map_pointer_t NewDescription(pkgCache::DescIterator &Desc,const std::string &Lang,const MD5SumValue &md5sum,map_stringitem_t const idxmd5str);
+   bool NewProvides(pkgCache::VerIterator &Ver, pkgCache::PkgIterator &Pkg,
+                   map_stringitem_t const ProvidesVersion, uint8_t const Flags);

 
    public:
 
 
    public:
 

-   unsigned long WriteUniqString(const char *S,unsigned int Size);
-   inline unsigned long WriteUniqString(const std::string &S) {return WriteUniqString(S.c_str(),S.length());};
+   enum StringType { MIXED, PKGNAME, VERSIONNUMBER, SECTION };
+   map_stringitem_t StoreString(StringType const type, const char * S, unsigned int const Size);
+
+#ifdef APT_PKG_EXPOSE_STRING_VIEW
+   inline map_stringitem_t StoreString(enum StringType const type, APT::StringView S) {return StoreString(type, S.data(),S.length());};
+#endif

 
    void DropProgress() {Progress = 0;};
 
    void DropProgress() {Progress = 0;};

-   bool SelectFile(const std::string &File,const std::string &Site,pkgIndexFile const &Index,
-                  unsigned long Flags = 0);
+   bool SelectFile(const std::string &File,pkgIndexFile const &Index, std::string const &Architecture, std::string const &Component, unsigned long Flags = 0);
+   bool SelectReleaseFile(const std::string &File, const std::string &Site, unsigned long Flags = 0);

    bool MergeList(ListParser &List,pkgCache::VerIterator *Ver = 0);
    inline pkgCache &GetCache() {return Cache;};
    bool MergeList(ListParser &List,pkgCache::VerIterator *Ver = 0);
    inline pkgCache &GetCache() {return Cache;};

-   inline pkgCache::PkgFileIterator GetCurFile() 
+   inline pkgCache::PkgFileIterator GetCurFile()

          {return pkgCache::PkgFileIterator(Cache,CurrentFile);};
          {return pkgCache::PkgFileIterator(Cache,CurrentFile);};

+   inline pkgCache::RlsFileIterator GetCurRlsFile()
+         {return pkgCache::RlsFileIterator(Cache,CurrentRlsFile);};

 
 

-   bool HasFileDeps() {return FoundFileDeps;};
-   bool MergeFileProvides(ListParser &List);
-   bool FinishCache(OpProgress *Progress) APT_DEPRECATED APT_CONST;
-
-   static bool MakeStatusCache(pkgSourceList &List,OpProgress *Progress,
+   APT_PUBLIC static bool MakeStatusCache(pkgSourceList &List,OpProgress *Progress,

                        MMap **OutMap = 0,bool AllowMem = false);
                        MMap **OutMap = 0,bool AllowMem = false);

-   static bool MakeOnlyStatusCache(OpProgress *Progress,DynamicMMap **OutMap);
-   static DynamicMMap* CreateDynamicMMap(FileFd *CacheF, unsigned long Flags = 0);
+   APT_HIDDEN static bool MakeStatusCache(pkgSourceList &List,OpProgress *Progress,
+                       MMap **OutMap,pkgCache **OutCache, bool AllowMem = false);
+   APT_PUBLIC static bool MakeOnlyStatusCache(OpProgress *Progress,DynamicMMap **OutMap);

 
 

-   void ReMap(void const * const oldMap, void const * const newMap);
+   void ReMap(void const * const oldMap, void const * const newMap, size_t oldSize);
+   bool Start();

 
    pkgCacheGenerator(DynamicMMap *Map,OpProgress *Progress);
 
    pkgCacheGenerator(DynamicMMap *Map,OpProgress *Progress);

-   ~pkgCacheGenerator();
+   virtual ~pkgCacheGenerator();

 
    private:
 
    private:

+   void * const d;

    APT_HIDDEN bool MergeListGroup(ListParser &List, std::string const &GrpName);
    APT_HIDDEN bool MergeListPackage(ListParser &List, pkgCache::PkgIterator &Pkg);
    APT_HIDDEN bool MergeListGroup(ListParser &List, std::string const &GrpName);
    APT_HIDDEN bool MergeListPackage(ListParser &List, pkgCache::PkgIterator &Pkg);

+#ifdef APT_PKG_EXPOSE_STRING_VIEW

    APT_HIDDEN bool MergeListVersion(ListParser &List, pkgCache::PkgIterator &Pkg,
    APT_HIDDEN bool MergeListVersion(ListParser &List, pkgCache::PkgIterator &Pkg,

-                        std::string const &Version, pkgCache::VerIterator* &OutVer);
+                        APT::StringView const &Version, pkgCache::VerIterator* &OutVer);
+#endif

 
    APT_HIDDEN bool AddImplicitDepends(pkgCache::GrpIterator &G, pkgCache::PkgIterator &P,
                           pkgCache::VerIterator &V);
    APT_HIDDEN bool AddImplicitDepends(pkgCache::VerIterator &V, pkgCache::PkgIterator &D);
 
    APT_HIDDEN bool AddNewDescription(ListParser &List, pkgCache::VerIterator &Ver,
 
    APT_HIDDEN bool AddImplicitDepends(pkgCache::GrpIterator &G, pkgCache::PkgIterator &P,
                           pkgCache::VerIterator &V);
    APT_HIDDEN bool AddImplicitDepends(pkgCache::VerIterator &V, pkgCache::PkgIterator &D);
 
    APT_HIDDEN bool AddNewDescription(ListParser &List, pkgCache::VerIterator &Ver,

-        std::string const &lang, MD5SumValue const &CurMd5, map_ptrloc &md5idx);
+        std::string const &lang, MD5SumValue const &CurMd5, map_stringitem_t &md5idx);

 };
                                                                        /*}}}*/
 // This is the abstract package list parser class.                     /*{{{*/
 };
                                                                        /*}}}*/
 // This is the abstract package list parser class.                     /*{{{*/

-class pkgCacheGenerator::ListParser
+class APT_HIDDEN pkgCacheListParser

 {
    pkgCacheGenerator *Owner;
    friend class pkgCacheGenerator;
 {
    pkgCacheGenerator *Owner;
    friend class pkgCacheGenerator;

-   
+

    // Some cache items
    pkgCache::VerIterator OldDepVer;
    // Some cache items
    pkgCache::VerIterator OldDepVer;

-   map_ptrloc *OldDepLast;
+   map_pointer_t *OldDepLast;
+
+   void * const d;

 
 

-   // Flag file dependencies
-   bool FoundFileDeps;
-      

    protected:
 
    protected:
 

-   inline unsigned long WriteUniqString(std::string S) {return Owner->WriteUniqString(S);};
-   inline unsigned long WriteUniqString(const char *S,unsigned int Size) {return Owner->WriteUniqString(S,Size);};
-   inline unsigned long WriteString(const std::string &S) {return Owner->WriteStringInMap(S);};
-   inline unsigned long WriteString(const char *S,unsigned int Size) {return Owner->WriteStringInMap(S,Size);};
-   bool NewDepends(pkgCache::VerIterator &Ver,const std::string &Package, const std::string &Arch,
-                  const std::string &Version,unsigned int Op,
-                  unsigned int Type);
-   bool NewProvides(pkgCache::VerIterator &Ver,const std::string &PkgName,
-                   const std::string &PkgArch, const std::string &Version);
-   
+   inline map_stringitem_t StoreString(pkgCacheGenerator::StringType const type, const char *S,unsigned int Size) {return Owner->StoreString(type, S, Size);};
+#ifdef APT_PKG_EXPOSE_STRING_VIEW
+   inline map_stringitem_t StoreString(pkgCacheGenerator::StringType const type, APT::StringView S) {return Owner->StoreString(type, S);};
+#endif
+
+   inline map_stringitem_t WriteString(const std::string &S) {return Owner->WriteStringInMap(S);};
+   inline map_stringitem_t WriteString(const char *S,unsigned int Size) {return Owner->WriteStringInMap(S,Size);};
+#ifdef APT_PKG_EXPOSE_STRING_VIEW
+   bool NewDepends(pkgCache::VerIterator &Ver,APT::StringView Package, APT::StringView Arch,
+                  APT::StringView Version,uint8_t const Op,
+                  uint8_t const Type);
+   bool NewProvides(pkgCache::VerIterator &Ver,APT::StringView PkgName,
+                   APT::StringView PkgArch, APT::StringView Version,
+                   uint8_t const Flags);
+   bool NewProvidesAllArch(pkgCache::VerIterator &Ver, APT::StringView Package,
+                          APT::StringView Version, uint8_t const Flags);
+#endif

    public:
    
    // These all operate against the current section
    virtual std::string Package() = 0;
    public:
    
    // These all operate against the current section
    virtual std::string Package() = 0;

-   virtual std::string Architecture() = 0;

    virtual bool ArchitectureAll() = 0;
    virtual bool ArchitectureAll() = 0;

-   virtual std::string Version() = 0;
+#ifdef APT_PKG_EXPOSE_STRING_VIEW
+   virtual APT::StringView Architecture() = 0;
+   virtual APT::StringView Version() = 0;
+#endif

    virtual bool NewVersion(pkgCache::VerIterator &Ver) = 0;
    virtual bool NewVersion(pkgCache::VerIterator &Ver) = 0;

-   virtual std::string Description(std::string const &lang) = 0;

    virtual std::vector<std::string> AvailableDescriptionLanguages() = 0;
    virtual MD5SumValue Description_md5() = 0;
    virtual unsigned short VersionHash() = 0;
    virtual std::vector<std::string> AvailableDescriptionLanguages() = 0;
    virtual MD5SumValue Description_md5() = 0;
    virtual unsigned short VersionHash() = 0;


@@ -172,28 +224,24 @@ class pkgCacheGenerator::ListParser
     * \param Hash of the currently parsed version
     * \param Ver to compare with
     */
     * \param Hash of the currently parsed version
     * \param Ver to compare with
     */

-#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
-   virtual
-#endif
-      APT_PURE bool SameVersion(unsigned short const Hash, pkgCache::VerIterator const &Ver);
+   virtual bool SameVersion(unsigned short const Hash, pkgCache::VerIterator const &Ver);

    virtual bool UsePackage(pkgCache::PkgIterator &Pkg,
                           pkgCache::VerIterator &Ver) = 0;
    virtual bool UsePackage(pkgCache::PkgIterator &Pkg,
                           pkgCache::VerIterator &Ver) = 0;

-   virtual unsigned long Offset() = 0;
-   virtual unsigned long Size() = 0;
+   virtual map_filesize_t Offset() = 0;
+   virtual map_filesize_t Size() = 0;

    
    virtual bool Step() = 0;
    
    
    virtual bool Step() = 0;
    

-   inline bool HasFileDeps() {return FoundFileDeps;};

    virtual bool CollectFileProvides(pkgCache &/*Cache*/,
                                    pkgCache::VerIterator &/*Ver*/) {return true;};
 
    virtual bool CollectFileProvides(pkgCache &/*Cache*/,
                                    pkgCache::VerIterator &/*Ver*/) {return true;};
 

-   ListParser() : FoundFileDeps(false) {};
-   virtual ~ListParser() {};
+   pkgCacheListParser();
+   virtual ~pkgCacheListParser();

 };
                                                                        /*}}}*/
 
 };
                                                                        /*}}}*/
 

-bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
+APT_DEPRECATED_MSG("Use pkgCacheGenerator::MakeStatusCache instead") bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,

                        MMap **OutMap = 0,bool AllowMem = false);
                        MMap **OutMap = 0,bool AllowMem = false);

-bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap);
+APT_DEPRECATED_MSG("Use pkgCacheGenerator::MakeOnlyStatusCache instead") bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap);

 
 #endif
 
 #endif