apt-pkg/version.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: version.h,v 1.8 2001/05/27 05:55:27 jgg Exp $
   4 /* ######################################################################
   5
   6    Version - Versioning system..
   7
   8    The versioning system represents how versions are compared, represented
   9    and how dependencies are evaluated. As a general rule versioning
  10    systems are not compatible unless specifically allowed by the
  11    TestCompatibility query.
  12
  13    The versions are stored in a global list of versions, but that is just
  14    so that they can be queried when someone does 'apt-get -v'.
  15    pkgSystem provides the proper means to access the VS for the active
  16    system.
  17
  18    ##################################################################### */
  19                                                                         /*}}}*/
  20 #ifndef PKGLIB_VERSION_H
  21 #define PKGLIB_VERSION_H
  22
  23
  24 #include <apt-pkg/strutl.h>
  25 #include <string>
  26
  27 using std::string;
  28
  29 class pkgVersioningSystem
  30 {
  31    public:
  32    // Global list of VS's
  33    static pkgVersioningSystem **GlobalList;
  34    static unsigned long GlobalListLen;
  35    static pkgVersioningSystem *GetVS(const char *Label);
  36
  37    const char *Label;
  38
  39    // Compare versions..
  40    virtual int DoCmpVersion(const char *A,const char *Aend,
  41                           const char *B,const char *Bend) = 0;
  42
  43    virtual bool CheckDep(const char *PkgVer,int Op,const char *DepVer) = 0;
  44    virtual int DoCmpReleaseVer(const char *A,const char *Aend,
  45                                const char *B,const char *Bend) = 0;
  46    virtual string UpstreamVersion(const char *A) = 0;
  47
  48    // See if the given VS is compatible with this one..
  49    virtual bool TestCompatibility(pkgVersioningSystem const &Against)
  50                 {return this == &Against;};
  51
  52    // Shortcuts
  53    APT_MKSTRCMP(CmpVersion,DoCmpVersion);
  54    APT_MKSTRCMP(CmpReleaseVer,DoCmpReleaseVer);
  55
  56    pkgVersioningSystem();
  57    virtual ~pkgVersioningSystem() {};
  58 };
  59
  60 #ifdef APT_COMPATIBILITY
  61 #include <apt-pkg/debversion.h>
  62 #endif
  63
  64 #endif