-// DisplayRecord - Displays the complete record for the package /*{{{*/
-// ---------------------------------------------------------------------
-/* This displays the package record from the proper package index file.
- It is not used by DumpAvail for performance reasons. */
-bool DisplayRecord(pkgCacheFile &CacheFile, pkgCache::VerIterator V)
-{
- pkgCache *Cache = CacheFile.GetPkgCache();
- if (unlikely(Cache == NULL))
- return false;
-
- // Find an appropriate file
- pkgCache::VerFileIterator Vf = V.FileList();
- for (; Vf.end() == false; ++Vf)
- if ((Vf.File()->Flags & pkgCache::Flag::NotSource) == 0)
- break;
- if (Vf.end() == true)
- Vf = V.FileList();
-
- // Check and load the package list file
- pkgCache::PkgFileIterator I = Vf.File();
- if (I.IsOk() == false)
- return _error->Error(_("Package file %s is out of sync."),I.FileName());
-
- FileFd PkgF;
- if (PkgF.Open(I.FileName(), FileFd::ReadOnly, FileFd::Extension) == false)
- return false;
-
- // Read the record
- unsigned char *Buffer = new unsigned char[Cache->HeaderP->MaxVerFileSize+1];
- Buffer[V.FileList()->Size] = '\n';
- if (PkgF.Seek(V.FileList()->Offset) == false ||
- PkgF.Read(Buffer,V.FileList()->Size) == false)
- {
- delete [] Buffer;
- return false;
- }
-
- // Get a pointer to start of Description field
- const unsigned char *DescP = (unsigned char*)strstr((char*)Buffer, "Description:");
-
- // Write all but Description
- if (fwrite(Buffer,1,DescP - Buffer,stdout) < (size_t)(DescP - Buffer))
- {
- delete [] Buffer;
- return false;
- }
-
- // Show the right description
- pkgRecords Recs(*Cache);
- pkgCache::DescIterator Desc = V.TranslatedDescription();
- pkgRecords::Parser &P = Recs.Lookup(Desc.FileList());
- cout << "Description" << ( (strcmp(Desc.LanguageCode(),"") != 0) ? "-" : "" ) << Desc.LanguageCode() << ": " << P.LongDesc();
-
- // Find the first field after the description (if there is any)
- for(DescP++;DescP != &Buffer[V.FileList()->Size];DescP++)
- {
- if(*DescP == '\n' && *(DescP+1) != ' ')
- {
- // write the rest of the buffer
- const unsigned char *end=&Buffer[V.FileList()->Size];
- if (fwrite(DescP,1,end-DescP,stdout) < (size_t)(end-DescP))
- {
- delete [] Buffer;
- return false;
- }
-
- break;
- }
- }
- // write a final newline (after the description)
- cout<<endl;
- delete [] Buffer;
-
- return true;
-}
- /*}}}*/
-
-struct ExDescFile
-{
- pkgCache::DescFile *Df;
- bool NameMatch;
-};
-
-// Search - Perform a search /*{{{*/
-// ---------------------------------------------------------------------
-/* This searches the package names and package descriptions for a pattern */
-bool Search(CommandLine &CmdL)
-{
- bool const ShowFull = _config->FindB("APT::Cache::ShowFull",false);
- bool const NamesOnly = _config->FindB("APT::Cache::NamesOnly",false);
- unsigned int const NumPatterns = CmdL.FileSize() -1;
-
- pkgCacheFile CacheFile;
- pkgCache *Cache = CacheFile.GetPkgCache();
- pkgDepCache::Policy *Plcy = CacheFile.GetPolicy();
- if (unlikely(Cache == NULL || Plcy == NULL))
- return false;
-
- // Make sure there is at least one argument
- if (NumPatterns < 1)
- return _error->Error(_("You must give at least one search pattern"));
-
- // Compile the regex pattern
- regex_t *Patterns = new regex_t[NumPatterns];
- memset(Patterns,0,sizeof(*Patterns)*NumPatterns);
- for (unsigned I = 0; I != NumPatterns; I++)
- {
- if (regcomp(&Patterns[I],CmdL.FileList[I+1],REG_EXTENDED | REG_ICASE |
- REG_NOSUB) != 0)
- {
- for (; I != 0; I--)
- regfree(&Patterns[I]);
- return _error->Error("Regex compilation error");
- }
- }
-
- if (_error->PendingError() == true)
- {
- for (unsigned I = 0; I != NumPatterns; I++)
- regfree(&Patterns[I]);
- return false;
- }
-
- ExDescFile *DFList = new ExDescFile[Cache->HeaderP->GroupCount+1];
- memset(DFList,0,sizeof(*DFList)*Cache->HeaderP->GroupCount+1);
-
- // Map versions that we want to write out onto the VerList array.
- for (pkgCache::GrpIterator G = Cache->GrpBegin(); G.end() == false; ++G)
- {
- if (DFList[G->ID].NameMatch == true)
- continue;
-
- DFList[G->ID].NameMatch = true;
- for (unsigned I = 0; I != NumPatterns; I++)
- {
- if (regexec(&Patterns[I],G.Name(),0,0,0) == 0)
- continue;
- DFList[G->ID].NameMatch = false;
- break;
- }
-
- // Doing names only, drop any that dont match..
- if (NamesOnly == true && DFList[G->ID].NameMatch == false)
- continue;
-
- // Find the proper version to use
- pkgCache::PkgIterator P = G.FindPreferredPkg();
- if (P.end() == true)
- continue;
- pkgCache::VerIterator V = Plcy->GetCandidateVer(P);
- if (V.end() == false)
- DFList[G->ID].Df = V.TranslatedDescription().FileList();
-
- if (DFList[G->ID].NameMatch == false)
- continue;
-
- // Include all the packages that provide matching names too
- for (pkgCache::PrvIterator Prv = P.ProvidesList() ; Prv.end() == false; ++Prv)
- {
- pkgCache::VerIterator V = Plcy->GetCandidateVer(Prv.OwnerPkg());
- if (V.end() == true)
- continue;
-
- unsigned long id = Prv.OwnerPkg().Group()->ID;
- DFList[id].Df = V.TranslatedDescription().FileList();
- DFList[id].NameMatch = true;
- }
- }
-
- LocalitySort(&DFList->Df,Cache->HeaderP->GroupCount,sizeof(*DFList));
-
- // Create the text record parser
- pkgRecords Recs(*Cache);
- // Iterate over all the version records and check them
- for (ExDescFile *J = DFList; J->Df != 0; J++)
- {
- pkgRecords::Parser &P = Recs.Lookup(pkgCache::DescFileIterator(*Cache,J->Df));
-
- if (J->NameMatch == false && NamesOnly == false)
- {
- string const LongDesc = P.LongDesc();
- J->NameMatch = true;
- for (unsigned I = 0; I != NumPatterns; I++)
- {
- if (regexec(&Patterns[I],LongDesc.c_str(),0,0,0) == 0)
- continue;
- J->NameMatch = false;
- break;
- }
- }
-
- if (J->NameMatch == true)
- {
- if (ShowFull == true)
- {
- const char *Start;
- const char *End;
- P.GetRec(Start,End);
- fwrite(Start,End-Start,1,stdout);
- putc('\n',stdout);
- }
- else
- printf("%s - %s\n",P.Name().c_str(),P.ShortDesc().c_str());
- }
- }
-
- delete [] DFList;
- for (unsigned I = 0; I != NumPatterns; I++)
- regfree(&Patterns[I]);
- if (ferror(stdout))
- return _error->Error("Write to stdout failed");
- return true;
-}
- /*}}}*/
projects / apt.git / blobdiff