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/pkgcache.h>
  18 #include <apt-pkg/cacheiterators.h>
  19
  20 #include <stddef.h>
  21 #include <vector>
  22
  23 #include <apti18n.h>
  24                                                                         /*}}}*/
  25
  26 // Records::pkgRecords - Constructor                                    /*{{{*/
  27 // ---------------------------------------------------------------------
  28 /* This will create the necessary structures to access the status files */
  29 pkgRecords::pkgRecords(pkgCache &aCache) : d(NULL), Cache(aCache),
  30   Files(Cache.HeaderP->PackageFileCount)
  31 {
  32    for (pkgCache::PkgFileIterator I = Cache.FileBegin();
  33         I.end() == false; ++I)
  34    {
  35       const pkgIndexFile::Type *Type = pkgIndexFile::Type::GetType(I.IndexType());
  36       if (Type == 0)
  37       {
  38          _error->Error(_("Index file type '%s' is not supported"),I.IndexType());
  39          return;
  40       }
  41
  42       Files[I->ID] = Type->CreatePkgParser(I);
  43       if (Files[I->ID] == 0)
  44          return;
  45    }
  46 }
  47                                                                         /*}}}*/
  48 // Records::~pkgRecords - Destructor                                    /*{{{*/
  49 // ---------------------------------------------------------------------
  50 /* */
  51 pkgRecords::~pkgRecords()
  52 {
  53    for ( std::vector<Parser*>::iterator it = Files.begin();
  54      it != Files.end();
  55      ++it)
  56    {
  57       delete *it;
  58    }
  59 }
  60                                                                         /*}}}*/
  61 // Records::Lookup - Get a parser for the package version file          /*{{{*/
  62 // ---------------------------------------------------------------------
  63 /* */
  64 pkgRecords::Parser &pkgRecords::Lookup(pkgCache::VerFileIterator const &Ver)
  65 {
  66    Files[Ver.File()->ID]->Jump(Ver);
  67    return *Files[Ver.File()->ID];
  68 }
  69                                                                         /*}}}*/
  70 // Records::Lookup - Get a parser for the package description file      /*{{{*/
  71 // ---------------------------------------------------------------------
  72 /* */
  73 pkgRecords::Parser &pkgRecords::Lookup(pkgCache::DescFileIterator const &Desc)
  74 {
  75    Files[Desc.File()->ID]->Jump(Desc);
  76    return *Files[Desc.File()->ID];
  77 }
  78                                                                         /*}}}*/
  79
  80 pkgRecords::Parser::Parser() : d(NULL) {}
  81 pkgRecords::Parser::~Parser() {}