apt-pkg/pkgsystem.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: pkgsystem.cc,v 1.3 2004/02/27 00:43:16 mdz Exp $
   4 /* ######################################################################
   5
   6    System - Abstraction for running on different systems.
   7
   8    Basic general structure..
   9
  10    ##################################################################### */
  11                                                                         /*}}}*/
  12 // Include Files                                                        /*{{{*/
  13 #include<config.h>
  14
  15 #include <apt-pkg/debsystem.h>
  16 #include <apt-pkg/pkgsystem.h>
  17 #include <apt-pkg/macros.h>
  18
  19 #include <cassert>
  20 #include <cstring>
  21                                                                         /*}}}*/
  22
  23 pkgSystem *_system = 0;
  24 static pkgSystem *SysList[10];
  25 pkgSystem **pkgSystem::GlobalList = SysList;
  26 unsigned long pkgSystem::GlobalListLen = 0;
  27
  28 // System::pkgSystem - Constructor                                      /*{{{*/
  29 // ---------------------------------------------------------------------
  30 /* Add it to the global list.. */
  31 pkgSystem::pkgSystem(char const * const label, pkgVersioningSystem * const vs) :
  32    Label(label), VS(vs), d(NULL)
  33 {
  34    assert(GlobalListLen < sizeof(SysList)/sizeof(*SysList));
  35    SysList[GlobalListLen] = this;
  36    ++GlobalListLen;
  37 }
  38                                                                         /*}}}*/
  39 // System::GetSystem - Get the named system                             /*{{{*/
  40 // ---------------------------------------------------------------------
  41 /* */
  42 APT_PURE pkgSystem *pkgSystem::GetSystem(const char *Label)
  43 {
  44    for (unsigned I = 0; I != GlobalListLen; I++)
  45       if (strcmp(SysList[I]->Label,Label) == 0)
  46          return SysList[I];
  47    return 0;
  48 }
  49                                                                         /*}}}*/
  50 bool pkgSystem::MultiArchSupported() const                              /*{{{*/
  51 {
  52    debSystem const * const deb = dynamic_cast<debSystem const *>(this);
  53    if (deb != NULL)
  54       return deb->SupportsMultiArch();
  55    return true;
  56 }
  57                                                                         /*}}}*/
  58 std::vector<std::string> pkgSystem::ArchitecturesSupported() const      /*{{{*/
  59 {
  60    debSystem const * const deb = dynamic_cast<debSystem const *>(this);
  61    if (deb != NULL)
  62       return deb->SupportedArchitectures();
  63    return {};
  64 }
  65                                                                         /*}}}*/
  66
  67 pkgSystem::~pkgSystem() {}