apt-pkg/deb/deblistparser.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: deblistparser.h,v 1.9 2001/02/20 07:03:17 jgg Exp $
   4 /* ######################################################################
   5
   6    Debian Package List Parser - This implements the abstract parser
   7    interface for Debian package files
   8
   9    ##################################################################### */
  10                                                                         /*}}}*/
  11 #ifndef PKGLIB_DEBLISTPARSER_H
  12 #define PKGLIB_DEBLISTPARSER_H
  13
  14 #include <apt-pkg/pkgcachegen.h>
  15 #include <apt-pkg/tagfile.h>
  16
  17 class debListParser : public pkgCacheGenerator::ListParser
  18 {
  19    public:
  20
  21    // Parser Helper
  22    struct WordList
  23    {
  24       const char *Str;
  25       unsigned char Val;
  26    };
  27
  28    private:
  29
  30    pkgTagFile Tags;
  31    pkgTagSection Section;
  32    unsigned long iOffset;
  33    string Arch;
  34
  35    unsigned long UniqFindTagWrite(const char *Tag);
  36    bool ParseStatus(pkgCache::PkgIterator Pkg,pkgCache::VerIterator Ver);
  37    bool ParseDepends(pkgCache::VerIterator Ver,const char *Tag,
  38                      unsigned int Type);
  39    bool ParseProvides(pkgCache::VerIterator Ver);
  40    static bool GrabWord(string Word,WordList *List,unsigned char &Out);
  41
  42    public:
  43
  44    static unsigned char GetPrio(string Str);
  45
  46    // These all operate against the current section
  47    virtual string Package();
  48    virtual string Version();
  49    virtual bool NewVersion(pkgCache::VerIterator Ver);
  50    virtual unsigned short VersionHash();
  51    virtual bool UsePackage(pkgCache::PkgIterator Pkg,
  52                            pkgCache::VerIterator Ver);
  53    virtual unsigned long Offset() {return iOffset;};
  54    virtual unsigned long Size() {return Section.size();};
  55
  56    virtual bool Step();
  57
  58    bool LoadReleaseInfo(pkgCache::PkgFileIterator FileI,FileFd &File,
  59                         string section);
  60
  61    static const char *ParseDepends(const char *Start,const char *Stop,
  62                             string &Package,string &Ver,unsigned int &Op,
  63                             bool ParseArchFlags = false);
  64    static const char *ConvertRelation(const char *I,unsigned int &Op);
  65
  66    debListParser(FileFd *File);
  67 };
  68
  69 #endif