apt-pkg/pkgrecords.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: pkgrecords.cc,v 1.8 2003/09/02 04:52:16 mdz Exp $
   4 /* ######################################################################
   5
   6    Package Records - Allows access to complete package description records
   7                      directly from the file.
   8
   9    ##################################################################### */
  10                                                                         /*}}}*/
  11 // Include Files                                                        /*{{{*/
  12 #ifdef __GNUG__
  13 #pragma implementation "apt-pkg/pkgrecords.h"
  14 #endif
  15 #include <apt-pkg/pkgrecords.h>
  16 #include <apt-pkg/indexfile.h>
  17 #include <apt-pkg/error.h>
  18 #include <apt-pkg/configuration.h>
  19
  20 #include <apti18n.h>
  21                                                                         /*}}}*/
  22
  23 // Records::pkgRecords - Constructor                                    /*{{{*/
  24 // ---------------------------------------------------------------------
  25 /* This will create the necessary structures to access the status files */
  26 pkgRecords::pkgRecords(pkgCache &Cache) : Cache(Cache),
  27   Files(Cache.HeaderP->PackageFileCount)
  28 {
  29    for (pkgCache::PkgFileIterator I = Cache.FileBegin();
  30         I.end() == false; I++)
  31    {
  32       const pkgIndexFile::Type *Type = pkgIndexFile::Type::GetType(I.IndexType());
  33       if (Type == 0)
  34       {
  35          _error->Error(_("Index file type '%s' is not supported"),I.IndexType());
  36          return;
  37       }
  38
  39       Files[I->ID] = Type->CreatePkgParser(I);
  40       if (Files[I->ID] == 0)
  41          return;
  42    }
  43 }
  44                                                                         /*}}}*/
  45 // Records::~pkgRecords - Destructor                                    /*{{{*/
  46 // ---------------------------------------------------------------------
  47 /* */
  48 pkgRecords::~pkgRecords()
  49 {
  50    for ( vector<Parser*>::iterator it = Files.begin();
  51      it != Files.end();
  52      ++it)
  53    {
  54       delete *it;
  55    }
  56
  57 }
  58                                                                         /*}}}*/
  59 // Records::Lookup - Get a parser for the package version file          /*{{{*/
  60 // ---------------------------------------------------------------------
  61 /* */
  62 pkgRecords::Parser &pkgRecords::Lookup(pkgCache::VerFileIterator const &Ver)
  63 {
  64    Files[Ver.File()->ID]->Jump(Ver);
  65    return *Files[Ver.File()->ID];
  66 }
  67                                                                         /*}}}*/
  68 // Records::Lookup - Get a parser for the package description file      /*{{{*/
  69 // ---------------------------------------------------------------------
  70 /* */
  71 pkgRecords::Parser &pkgRecords::Lookup(pkgCache::DescFileIterator const &Desc)
  72 {
  73    Files[Desc.File()->ID]->Jump(Desc);
  74    return *Files[Desc.File()->ID];
  75 }
  76                                                                         /*}}}*/