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 #include<config.h>
  13
  14 #include <apt-pkg/pkgrecords.h>
  15 #include <apt-pkg/indexfile.h>
  16 #include <apt-pkg/error.h>
  17 #include <apt-pkg/configuration.h>
  18
  19 #include <apti18n.h>
  20                                                                         /*}}}*/
  21
  22 // Records::pkgRecords - Constructor                                    /*{{{*/
  23 // ---------------------------------------------------------------------
  24 /* This will create the necessary structures to access the status files */
  25 pkgRecords::pkgRecords(pkgCache &Cache) : Cache(Cache),
  26   Files(Cache.HeaderP->PackageFileCount)
  27 {
  28    for (pkgCache::PkgFileIterator I = Cache.FileBegin();
  29         I.end() == false; ++I)
  30    {
  31       const pkgIndexFile::Type *Type = pkgIndexFile::Type::GetType(I.IndexType());
  32       if (Type == 0)
  33       {
  34          _error->Error(_("Index file type '%s' is not supported"),I.IndexType());
  35          return;
  36       }
  37
  38       Files[I->ID] = Type->CreatePkgParser(I);
  39       if (Files[I->ID] == 0)
  40          return;
  41    }
  42 }
  43                                                                         /*}}}*/
  44 // Records::~pkgRecords - Destructor                                    /*{{{*/
  45 // ---------------------------------------------------------------------
  46 /* */
  47 pkgRecords::~pkgRecords()
  48 {
  49    for ( std::vector<Parser*>::iterator it = Files.begin();
  50      it != Files.end();
  51      ++it)
  52    {
  53       delete *it;
  54    }
  55 }
  56                                                                         /*}}}*/
  57 // Records::Lookup - Get a parser for the package version file          /*{{{*/
  58 // ---------------------------------------------------------------------
  59 /* */
  60 pkgRecords::Parser &pkgRecords::Lookup(pkgCache::VerFileIterator const &Ver)
  61 {
  62    Files[Ver.File()->ID]->Jump(Ver);
  63    return *Files[Ver.File()->ID];
  64 }
  65                                                                         /*}}}*/
  66 // Records::Lookup - Get a parser for the package description file      /*{{{*/
  67 // ---------------------------------------------------------------------
  68 /* */
  69 pkgRecords::Parser &pkgRecords::Lookup(pkgCache::DescFileIterator const &Desc)
  70 {
  71    Files[Desc.File()->ID]->Jump(Desc);
  72    return *Files[Desc.File()->ID];
  73 }
  74                                                                         /*}}}*/