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 #ifdef __GNUG__
  14 #pragma implementation "apt-pkg/pkgsystem.h"
  15 #endif
  16
  17 #include <apt-pkg/pkgsystem.h>
  18 #include <apt-pkg/policy.h>
  19 #include <cassert>
  20                                                                         /*}}}*/
  21
  22 pkgSystem *_system = 0;
  23 static pkgSystem *SysList[10];
  24 pkgSystem **pkgSystem::GlobalList = SysList;
  25 unsigned long pkgSystem::GlobalListLen = 0;
  26
  27 // System::pkgSystem - Constructor                                      /*{{{*/
  28 // ---------------------------------------------------------------------
  29 /* Add it to the global list.. */
  30 pkgSystem::pkgSystem()
  31 {
  32    assert(GlobalListLen < sizeof(SysList)/sizeof(*SysList));
  33    SysList[GlobalListLen] = this;
  34    GlobalListLen++;
  35 }
  36                                                                         /*}}}*/
  37 // System::GetSystem - Get the named system                             /*{{{*/
  38 // ---------------------------------------------------------------------
  39 /* */
  40 pkgSystem *pkgSystem::GetSystem(const char *Label)
  41 {
  42    for (unsigned I = 0; I != GlobalListLen; I++)
  43       if (strcmp(SysList[I]->Label,Label) == 0)
  44          return SysList[I];
  45    return 0;
  46 }
  47                                                                         /*}}}*/