apt-pkg/edsp/edspindexfile.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 /* ######################################################################
   4    The scenario file is designed to work as an intermediate file between
   5    APT and the resolver. Its on propose very similar to a dpkg status file
   6    ##################################################################### */
   7                                                                         /*}}}*/
   8 // Include Files                                                        /*{{{*/
   9 #include <config.h>
  10
  11 #include <apt-pkg/edspindexfile.h>
  12 #include <apt-pkg/edsplistparser.h>
  13 #include <apt-pkg/error.h>
  14 #include <apt-pkg/fileutl.h>
  15 #include <apt-pkg/progress.h>
  16 #include <apt-pkg/debindexfile.h>
  17 #include <apt-pkg/indexfile.h>
  18 #include <apt-pkg/mmap.h>
  19 #include <apt-pkg/pkgcache.h>
  20 #include <apt-pkg/cacheiterators.h>
  21 #include <apt-pkg/pkgcachegen.h>
  22 #include <apt-pkg/pkgrecords.h>
  23
  24 #include <stddef.h>
  25 #include <unistd.h>
  26 #include <string>
  27                                                                         /*}}}*/
  28
  29 // edspIndex::edspIndex - Constructor                                   /*{{{*/
  30 // ---------------------------------------------------------------------
  31 /* */
  32 edspIndex::edspIndex(std::string File) : debStatusIndex(File)
  33 {
  34 }
  35                                                                         /*}}}*/
  36 // StatusIndex::Merge - Load the index file into a cache                /*{{{*/
  37 bool edspIndex::Merge(pkgCacheGenerator &Gen,OpProgress *Prog) const
  38 {
  39    FileFd Pkg;
  40    if (File != "stdin")
  41       Pkg.Open(File, FileFd::ReadOnly);
  42    else
  43       Pkg.OpenDescriptor(STDIN_FILENO, FileFd::ReadOnly);
  44    if (_error->PendingError() == true)
  45       return false;
  46    edspListParser Parser(&Pkg);
  47    if (_error->PendingError() == true)
  48       return false;
  49
  50    if (Prog != NULL)
  51       Prog->SubProgress(0,File);
  52    if (Gen.SelectFile(File,std::string(),*this) == false)
  53       return _error->Error("Problem with SelectFile %s",File.c_str());
  54
  55    // Store the IMS information
  56    pkgCache::PkgFileIterator CFile = Gen.GetCurFile();
  57    CFile->Size = Pkg.FileSize();
  58    CFile->mtime = Pkg.ModificationTime();
  59    map_ptrloc const storage = Gen.WriteUniqString("edsp::scenario");
  60    CFile->Archive = storage;
  61
  62    if (Gen.MergeList(Parser) == false)
  63       return _error->Error("Problem with MergeList %s",File.c_str());
  64    return true;
  65 }
  66                                                                         /*}}}*/
  67 // Index File types for APT                                             /*{{{*/
  68 class edspIFType: public pkgIndexFile::Type
  69 {
  70    public:
  71    virtual pkgRecords::Parser *CreatePkgParser(pkgCache::PkgFileIterator) const
  72    {
  73       // we don't have a record parser for this type as the file is not presistent
  74       return NULL;
  75    };
  76    edspIFType() {Label = "EDSP scenario file";};
  77 };
  78 static edspIFType _apt_Universe;
  79
  80 const pkgIndexFile::Type *edspIndex::GetType() const
  81 {
  82    return &_apt_Universe;
  83 }
  84                                                                         /*}}}*/