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/indexfile.h>
  16 #include <apt-pkg/pkgcache.h>
  17 #include <apt-pkg/pkgrecords.h>
  18
  19 #include <stddef.h>
  20 #include <unistd.h>
  21 #include <string>
  22                                                                         /*}}}*/
  23
  24 // EDSP Index                                                           /*{{{*/
  25 edspIndex::edspIndex(std::string const &File) : pkgDebianIndexRealFile(File, true), d(NULL)
  26 {
  27 }
  28 std::string edspIndex::GetComponent() const
  29 {
  30    return "edsp";
  31 }
  32 std::string edspIndex::GetArchitecture() const
  33 {
  34    return std::string();
  35 }
  36 bool edspIndex::HasPackages() const
  37 {
  38    return true;
  39 }
  40 bool edspIndex::Exists() const
  41 {
  42    return true;
  43 }
  44 uint8_t edspIndex::GetIndexFlags() const
  45 {
  46    return 0;
  47 }
  48 bool edspIndex::OpenListFile(FileFd &Pkg, std::string const &FileName)
  49 {
  50    if (FileName.empty() == false && FileName != "stdin")
  51       return pkgDebianIndexRealFile::OpenListFile(Pkg, FileName);
  52    if (Pkg.OpenDescriptor(STDIN_FILENO, FileFd::ReadOnly) == false)
  53       return _error->Error("Problem opening %s",FileName.c_str());
  54    return true;
  55 }
  56 pkgCacheListParser * edspIndex::CreateListParser(FileFd &Pkg)
  57 {
  58    if (Pkg.IsOpen() == false)
  59       return NULL;
  60    _error->PushToStack();
  61    pkgCacheListParser * const Parser = new edspListParser(&Pkg);
  62    bool const newError = _error->PendingError();
  63    _error->MergeWithStack();
  64    return newError ? NULL : Parser;
  65 }
  66                                                                         /*}}}*/
  67
  68 // Index File types for APT                                             /*{{{*/
  69 class APT_HIDDEN edspIFType: public pkgIndexFile::Type
  70 {
  71    public:
  72    virtual pkgRecords::Parser *CreatePkgParser(pkgCache::PkgFileIterator const &) const APT_OVERRIDE
  73    {
  74       // we don't have a record parser for this type as the file is not presistent
  75       return NULL;
  76    };
  77    edspIFType() {Label = "EDSP scenario file";};
  78 };
  79 APT_HIDDEN edspIFType _apt_Edsp;
  80
  81 const pkgIndexFile::Type *edspIndex::GetType() const
  82 {
  83    return &_apt_Edsp;
  84 }
  85                                                                         /*}}}*/
  86
  87 edspIndex::~edspIndex() {}