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