apt-pkg/pkgrecords.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: pkgrecords.cc,v 1.4 1998/11/13 04:23:34 jgg 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/debrecords.h>
  17 #include <apt-pkg/error.h>
  18 #include <apt-pkg/configuration.h>
  19                                                                         /*}}}*/
  20
  21 // Records::pkgRecords - Constructor                                    /*{{{*/
  22 // ---------------------------------------------------------------------
  23 /* This will create the necessary structures to access the status files */
  24 pkgRecords::pkgRecords(pkgCache &Cache) : Cache(Cache), Files(0)
  25 {
  26    Files = new PkgFile[Cache.HeaderP->PackageFileCount];
  27    for (pkgCache::PkgFileIterator I = Cache.FileBegin();
  28         I.end() == false; I++)
  29    {
  30       // We can not initialize if the cache is out of sync.
  31       if (I.IsOk() == false)
  32       {
  33          _error->Error("Package file %s is out of sync.",I.FileName());
  34          return;
  35       }
  36
  37       // Create the file
  38       Files[I->ID].File = new FileFd(I.FileName(),FileFd::ReadOnly);
  39       if (_error->PendingError() == true)
  40          return;
  41
  42       // Create the parser
  43       Files[I->ID].Parse = new debRecordParser(*Files[I->ID].File);
  44       if (_error->PendingError() == true)
  45          return;
  46    }
  47 }
  48                                                                         /*}}}*/
  49 // Records::~pkgRecords - Destructor                                    /*{{{*/
  50 // ---------------------------------------------------------------------
  51 /* */
  52 pkgRecords::~pkgRecords()
  53 {
  54    delete [] Files;
  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    PkgFile &File = Files[Ver.File()->ID];
  63    File.Parse->Jump(Ver);
  64
  65    return *File.Parse;
  66 }
  67                                                                         /*}}}*/
  68 // Records::Pkgfile::~PkgFile - Destructor                              /*{{{*/
  69 // ---------------------------------------------------------------------
  70 /* */
  71 pkgRecords::PkgFile::~PkgFile()
  72 {
  73    delete Parse;
  74    delete File;
  75 }
  76                                                                         /*}}}*/