// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: tagfile.h,v 1.1 1998/07/02 02:58:13 jgg Exp $
+// $Id: tagfile.h,v 1.12 1998/12/07 07:26:23 jgg Exp $
/* ######################################################################
Fast scanner for RFC-822 type header information
This parser handles Debian package files (and others). Their form is
RFC-822 type header fields in groups seperated by a blank line.
- The parser reads the and provides methods to step linearly
+ The parser reads the file and provides methods to step linearly
over it or to jump to a pre-recorded start point and read that record.
A second class is used to perform pre-parsing of the record. It works
#ifndef PKGLIB_TAGFILE_H
#define PKGLIB_TAGFILE_H
-#include <pkglib/fileutl.h>
+#ifdef __GNUG__
+#pragma interface "apt-pkg/tagfile.h"
+#endif
+
+#include <apt-pkg/fileutl.h>
class pkgTagSection
{
// We have a limit of 256 tags per section.
unsigned short Indexes[256];
+ unsigned short AlphaIndexes[26 + 26*26];
+
unsigned int TagCount;
public:
inline bool operator !=(const pkgTagSection &rhs) {return Section != rhs.Section;};
bool Find(const char *Tag,const char *&Start, const char *&End);
+ string FindS(const char *Tag);
+ unsigned int FindI(const char *Tag);
bool Scan(const char *Start,unsigned long MaxLength);
- inline unsigned long Length() {return Stop - Section;};
+ inline unsigned long size() {return Stop - Section;};
+ inline unsigned int Count() {return TagCount;};
+ inline void Get(const char *&Start,const char *&Stop,unsigned int I)
+ {Start = Section + Indexes[I]; Stop = Section + Indexes[I+1];}
+
+ inline void GetSection(const char *&Start,const char *&Stop)
+ {
+ Start = Section;
+ Stop = this->Stop;
+ };
+
pkgTagSection() : Section(0), Stop(0) {};
};
class pkgTagFile
{
- File Fd;
+ FileFd &Fd;
char *Buffer;
char *Start;
char *End;
unsigned long Left;
+ unsigned long iOffset;
+ unsigned long Size;
bool Fill();
public:
bool Step(pkgTagSection &Section);
+ inline unsigned long Offset() {return iOffset;};
+ bool Jump(pkgTagSection &Tag,unsigned long Offset);
- pkgTagFile(File &F);
+ pkgTagFile(FileFd &F,unsigned long Size = 32*1024);
};
#endif