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/macros.h>
  17
  18 #include <cassert>
  19 #include <cstring>
  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(char const * const label, pkgVersioningSystem * const vs) :
  31    Label(label), VS(vs), d(NULL)
  32 {
  33    assert(GlobalListLen < sizeof(SysList)/sizeof(*SysList));
  34    SysList[GlobalListLen] = this;
  35    ++GlobalListLen;
  36 }
  37                                                                         /*}}}*/
  38 // System::GetSystem - Get the named system                             /*{{{*/
  39 // ---------------------------------------------------------------------
  40 /* */
  41 APT_PURE pkgSystem *pkgSystem::GetSystem(const char *Label)
  42 {
  43    for (unsigned I = 0; I != GlobalListLen; I++)
  44       if (strcmp(SysList[I]->Label,Label) == 0)
  45          return SysList[I];
  46    return 0;
  47 }
  48                                                                         /*}}}*/
  49
  50 pkgSystem::~pkgSystem() {}