X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/207825063be51d68768e242f06b26ee6fccd3aaf..bda94cb8432b3905f5757e92573fd16e73cb183f:/apt-pkg/tagfile.h diff --git a/apt-pkg/tagfile.h b/apt-pkg/tagfile.h index 70381ad13..61491aa04 100644 --- a/apt-pkg/tagfile.h +++ b/apt-pkg/tagfile.h @@ -20,9 +20,6 @@ #ifndef PKGLIB_TAGFILE_H #define PKGLIB_TAGFILE_H -#ifdef __GNUG__ -#pragma interface "apt-pkg/tagfile.h" -#endif #include <apt-pkg/fileutl.h> #include <stdio.h> @@ -30,14 +27,27 @@ class pkgTagSection { const char *Section; - const char *Stop; // We have a limit of 256 tags per section. - unsigned short Indexes[256]; - unsigned short AlphaIndexes[0x100]; + unsigned int Indexes[256]; + unsigned int AlphaIndexes[0x100]; unsigned int TagCount; - + + /* This very simple hash function for the last 8 letters gives + very good performance on the debian package files */ + inline static unsigned long AlphaHash(const char *Text, const char *End = 0) + { + unsigned long Res = 0; + for (; Text != End && *Text != ':' && *Text != 0; Text++) + Res = ((unsigned long)(*Text) & 0xDF) ^ (Res << 1); + return Res & 0xFF; + } + + + protected: + const char *Stop; + public: inline bool operator ==(const pkgTagSection &rhs) {return Section == rhs.Section;}; @@ -47,13 +57,19 @@ class pkgTagSection bool Find(const char *Tag,unsigned &Pos) const; string FindS(const char *Tag) const; signed int FindI(const char *Tag,signed long Default = 0) const ; + unsigned long long FindULL(const char *Tag, unsigned long long const &Default = 0) const; bool FindFlag(const char *Tag,unsigned long &Flags, unsigned long Flag) const; + bool static const FindFlag(unsigned long &Flags, unsigned long Flag, + const char* Start, const char* Stop); bool Scan(const char *Start,unsigned long MaxLength); inline unsigned long size() const {return Stop - Section;}; void Trim(); + virtual void TrimRecord(bool BeforeRecord, const char* &End); inline unsigned int Count() const {return TagCount;}; + inline bool Exists(const char* const Tag) {return AlphaIndexes[AlphaHash(Tag)] != 0;} + inline void Get(const char *&Start,const char *&Stop,unsigned int I) const {Start = Section + Indexes[I]; Stop = Section + Indexes[I+1];}