apt-private/private-show.cc

   1 // Includes                                                             /*{{{*/
   2 #include <config.h>
   3
   4 #include <apt-pkg/cachefile.h>
   5 #include <apt-pkg/cacheset.h>
   6 #include <apt-pkg/cmndline.h>
   7 #include <apt-pkg/error.h>
   8 #include <apt-pkg/fileutl.h>
   9 #include <apt-pkg/indexfile.h>
  10 #include <apt-pkg/pkgrecords.h>
  11 #include <apt-pkg/pkgsystem.h>
  12 #include <apt-pkg/sourcelist.h>
  13 #include <apt-pkg/strutl.h>
  14 #include <apt-pkg/tagfile.h>
  15 #include <apt-pkg/cacheiterators.h>
  16 #include <apt-pkg/configuration.h>
  17 #include <apt-pkg/depcache.h>
  18 #include <apt-pkg/macros.h>
  19 #include <apt-pkg/pkgcache.h>
  20
  21 #include <apt-private/private-cacheset.h>
  22 #include <apt-private/private-output.h>
  23 #include <apt-private/private-show.h>
  24
  25 #include <stdio.h>
  26 #include <ostream>
  27 #include <string>
  28
  29 #include <apti18n.h>
  30                                                                         /*}}}*/
  31
  32 namespace APT {
  33    namespace Cmd {
  34
  35 // DisplayRecord - Displays the complete record for the package         /*{{{*/
  36 // ---------------------------------------------------------------------
  37 static bool DisplayRecord(pkgCacheFile &CacheFile, pkgCache::VerIterator V,
  38                    std::ostream &out)
  39 {
  40    pkgCache *Cache = CacheFile.GetPkgCache();
  41    if (unlikely(Cache == NULL))
  42       return false;
  43    pkgDepCache *depCache = CacheFile.GetDepCache();
  44    if (unlikely(depCache == NULL))
  45       return false;
  46
  47    // Find an appropriate file
  48    pkgCache::VerFileIterator Vf = V.FileList();
  49    for (; Vf.end() == false; ++Vf)
  50       if ((Vf.File()->Flags & pkgCache::Flag::NotSource) == 0)
  51          break;
  52    if (Vf.end() == true)
  53       Vf = V.FileList();
  54
  55    // Check and load the package list file
  56    pkgCache::PkgFileIterator I = Vf.File();
  57    if (I.IsOk() == false)
  58       return _error->Error(_("Package file %s is out of sync."),I.FileName());
  59
  60    // find matching sources.list metaindex
  61    pkgSourceList *SrcList = CacheFile.GetSourceList();
  62    pkgIndexFile *Index;
  63    if (SrcList->FindIndex(I, Index) == false &&
  64        _system->FindIndex(I, Index) == false)
  65       return _error->Error("Can not find indexfile for Package %s (%s)",
  66                            V.ParentPkg().Name(), V.VerStr());
  67    std::string source_index_file = Index->Describe(true);
  68
  69    // Read the record
  70    FileFd PkgF;
  71    if (PkgF.Open(I.FileName(), FileFd::ReadOnly, FileFd::Extension) == false)
  72       return false;
  73    pkgTagSection Tags;
  74    pkgTagFile TagF(&PkgF);
  75
  76    if (TagF.Jump(Tags, V.FileList()->Offset) == false)
  77       return _error->Error("Internal Error, Unable to parse a package record");
  78
  79    // make size nice
  80    std::string installed_size;
  81    if (Tags.FindI("Installed-Size") > 0)
  82       strprintf(installed_size, "%sB", SizeToStr(Tags.FindI("Installed-Size")*1024).c_str());
  83    else
  84       installed_size = _("unknown");
  85    std::string package_size;
  86    if (Tags.FindI("Size") > 0)
  87       strprintf(package_size, "%sB", SizeToStr(Tags.FindI("Size")).c_str());
  88    else
  89       package_size = _("unknown");
  90
  91    pkgDepCache::StateCache &state = (*depCache)[V.ParentPkg()];
  92    bool is_installed = V.ParentPkg().CurrentVer() == V;
  93    const char *manual_installed;
  94    if (is_installed)
  95       manual_installed = !(state.Flags & pkgCache::Flag::Auto) ? "yes" : "no";
  96    else
  97       manual_installed = 0;
  98
  99    // FIXME: add verbose that does not do the removal of the tags?
 100    TFRewriteData RW[] = {
 101       // delete, apt-cache show has this info and most users do not care
 102       {"MD5sum", NULL, NULL},
 103       {"SHA1", NULL, NULL},
 104       {"SHA256", NULL, NULL},
 105       {"Filename", NULL, NULL},
 106       {"Multi-Arch", NULL, NULL},
 107       {"Architecture", NULL, NULL},
 108       {"Conffiles", NULL, NULL},
 109       // we use the translated description
 110       {"Description", NULL, NULL},
 111       {"Description-md5", NULL, NULL},
 112       // improve
 113       {"Installed-Size", installed_size.c_str(), NULL},
 114       {"Size", package_size.c_str(), "Download-Size"},
 115       // add
 116       {"APT-Manual-Installed", manual_installed, NULL},
 117       {"APT-Sources", source_index_file.c_str(), NULL},
 118       {NULL, NULL, NULL}
 119    };
 120
 121    if(TFRewrite(stdout, Tags, NULL, RW) == false)
 122       return _error->Error("Internal Error, Unable to parse a package record");
 123
 124    // write the description
 125    pkgRecords Recs(*Cache);
 126    // FIXME: show (optionally) all available translations(?)
 127    pkgCache::DescIterator Desc = V.TranslatedDescription();
 128    if (Desc.end() == false)
 129    {
 130       pkgRecords::Parser &P = Recs.Lookup(Desc.FileList());
 131       out << "Description: " << P.LongDesc();
 132    }
 133
 134    // write a final newline (after the description)
 135    out << std::endl << std::endl;
 136
 137    return true;
 138 }
 139                                                                         /*}}}*/
 140 bool ShowPackage(CommandLine &CmdL)                                     /*{{{*/
 141 {
 142    pkgCacheFile CacheFile;
 143    CacheSetHelperVirtuals helper(true, GlobalError::NOTICE);
 144    APT::CacheSetHelper::VerSelector const select = _config->FindB("APT::Cache::AllVersions", false) ?
 145                         APT::CacheSetHelper::ALL : APT::CacheSetHelper::CANDIDATE;
 146    APT::VersionList const verset = APT::VersionList::FromCommandLine(CacheFile, CmdL.FileList + 1, select, helper);
 147    for (APT::VersionList::const_iterator Ver = verset.begin(); Ver != verset.end(); ++Ver)
 148       if (DisplayRecord(CacheFile, Ver, c1out) == false)
 149          return false;
 150
 151    if (select == APT::CacheSetHelper::CANDIDATE)
 152    {
 153       APT::VersionList const verset_all = APT::VersionList::FromCommandLine(CacheFile, CmdL.FileList + 1, APT::CacheSetHelper::ALL, helper);
 154       int const records = verset_all.size() - verset.size();
 155       if (records > 0)
 156          _error->Notice(P_("There is %i additional record. Please use the '-a' switch to see it", "There are %i additional records. Please use the '-a' switch to see them.", records), records);
 157    }
 158
 159    for (APT::PackageSet::const_iterator Pkg = helper.virtualPkgs.begin();
 160         Pkg != helper.virtualPkgs.end(); ++Pkg)
 161    {
 162        c1out << "Package: " << Pkg.FullName(true) << std::endl;
 163        c1out << "State: " << _("not a real package (virtual)") << std::endl;
 164        // FIXME: show providers, see private-cacheset.h
 165        //        CacheSetHelperAPTGet::showVirtualPackageErrors()
 166    }
 167
 168    if (verset.empty() == true)
 169    {
 170       if (helper.virtualPkgs.empty() == true)
 171         return _error->Error(_("No packages found"));
 172       else
 173         _error->Notice(_("No packages found"));
 174    }
 175
 176    return true;
 177 }
 178                                                                         /*}}}*/
 179 } // namespace Cmd
 180 } // namespace APT