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/indexfile.h>
  16 #include <apt-pkg/tagfile.h>
  17
  18 class debListParser : public pkgCacheGenerator::ListParser
  19 {
  20    public:
  21
  22    // Parser Helper
  23    struct WordList
  24    {
  25       const char *Str;
  26       unsigned char Val;
  27    };
  28
  29    private:
  30
  31    pkgTagFile Tags;
  32    pkgTagSection Section;
  33    unsigned long iOffset;
  34    string Arch;
  35
  36    unsigned long FindTagWrite(const char *Tag);
  37    unsigned long UniqFindTagWrite(const char *Tag);
  38    bool ParseStatus(pkgCache::PkgIterator Pkg,pkgCache::VerIterator Ver);
  39    bool ParseDepends(pkgCache::VerIterator Ver,const char *Tag,
  40                      unsigned int Type);
  41    bool ParseProvides(pkgCache::VerIterator Ver);
  42    bool ParseTag(pkgCache::PkgIterator Pkg);
  43    static bool GrabWord(string Word,WordList *List,unsigned char &Out);
  44    static bool GrabWord(const srkString &Word,WordList *List,unsigned char &Out);
  45
  46    public:
  47
  48    srkString Find(const char *Tag) {
  49       srkString S;
  50       const char *Stop;
  51       if (Section.Find(Tag, S.Start, Stop))
  52          S.Size = Stop - S.Start;
  53       else {
  54          S.Start = NULL;
  55          S.Size = 0;
  56       }
  57       return S;
  58    }
  59
  60    static unsigned char GetPrio(string Str);
  61
  62    // These all operate against the current section
  63    virtual string Package();
  64    virtual string Version();
  65    virtual bool NewVersion(pkgCache::VerIterator Ver);
  66    virtual string Description();
  67    void Description(srkString &Str);
  68    virtual string DescriptionLanguage();
  69    virtual MD5SumValue Description_md5();
  70    virtual unsigned short VersionHash();
  71    virtual bool UsePackage(pkgCache::PkgIterator Pkg,
  72                            pkgCache::VerIterator Ver);
  73    virtual unsigned long Offset() {return iOffset;};
  74    virtual unsigned long Size() {return Section.size();};
  75
  76    virtual bool Step();
  77
  78    bool LoadReleaseInfo(pkgCache::PkgFileIterator FileI,FileFd &File,
  79                         string section);
  80
  81    static const char *ParseDepends(const char *Start,const char *Stop,
  82                             string &Package,string &Ver,unsigned int &Op,
  83                             bool ParseArchFlags = false);
  84    static const char *ParseDepends(const char *Start,const char *Stop,
  85                             srkString &Package,srkString &Ver,unsigned int &Op,
  86                             bool ParseArchFlags = false);
  87    static const char *ConvertRelation(const char *I,unsigned int &Op);
  88
  89    debListParser(FileFd *File);
  90 };
  91
  92 #endif