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/pkgsystem.h>
  16 #include <apt-pkg/policy.h>
  17 #include <cassert>
  18 #include <cstring>
  19                                                                         /*}}}*/
  20
  21 pkgSystem *_system = 0;
  22 static pkgSystem *SysList[10];
  23 pkgSystem **pkgSystem::GlobalList = SysList;
  24 unsigned long pkgSystem::GlobalListLen = 0;
  25
  26 // System::pkgSystem - Constructor                                      /*{{{*/
  27 // ---------------------------------------------------------------------
  28 /* Add it to the global list.. */
  29 pkgSystem::pkgSystem() : Label(NULL), VS(NULL)
  30 {
  31    assert(GlobalListLen < sizeof(SysList)/sizeof(*SysList));
  32    SysList[GlobalListLen] = this;
  33    ++GlobalListLen;
  34 }
  35                                                                         /*}}}*/
  36 // System::GetSystem - Get the named system                             /*{{{*/
  37 // ---------------------------------------------------------------------
  38 /* */
  39 pkgSystem *pkgSystem::GetSystem(const char *Label)
  40 {
  41    for (unsigned I = 0; I != GlobalListLen; I++)
  42       if (strcmp(SysList[I]->Label,Label) == 0)
  43          return SysList[I];
  44    return 0;
  45 }
  46                                                                         /*}}}*/