#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>
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;};
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 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];}
bool Done;
unsigned long iOffset;
unsigned long Size;
-
+
bool Fill();
-
+ bool Resize();
+
public:
bool Step(pkgTagSection &Section);
inline unsigned long Offset() {return iOffset;};
bool Jump(pkgTagSection &Tag,unsigned long Offset);
- pkgTagFile(FileFd *F,unsigned long Size = 128*1024);
+ pkgTagFile(FileFd *F,unsigned long Size = 32*1024);
~pkgTagFile();
};