apt-pkg/srcrecords.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: srcrecords.cc,v 1.7.2.2 2003/12/26 16:27:34 mdz Exp $
   4 /* ######################################################################
   5
   6    Source Package Records - Allows access to source package records
   7
   8    Parses and allows access to the list of source records and searching by
   9    source name on that list.
  10
  11    ##################################################################### */
  12                                                                         /*}}}*/
  13 // Include Files                                                        /*{{{*/
  14 #include <apt-pkg/srcrecords.h>
  15 #include <apt-pkg/error.h>
  16 #include <apt-pkg/sourcelist.h>
  17 #include <apt-pkg/strutl.h>
  18
  19 #include <apti18n.h>
  20                                                                         /*}}}*/
  21
  22 // SrcRecords::pkgSrcRecords - Constructor                              /*{{{*/
  23 // ---------------------------------------------------------------------
  24 /* Open all the source index files */
  25 pkgSrcRecords::pkgSrcRecords(pkgSourceList &List) : Files(0), Current(0)
  26 {
  27    for (pkgSourceList::const_iterator I = List.begin(); I != List.end(); I++)
  28    {
  29       vector<pkgIndexFile *> *Indexes = (*I)->GetIndexFiles();
  30       for (vector<pkgIndexFile *>::const_iterator J = Indexes->begin();
  31            J != Indexes->end(); J++)
  32       {
  33          Parser* P = (*J)->CreateSrcParser();
  34          if (_error->PendingError() == true)
  35             return;
  36          if (P != 0)
  37             Files.push_back(P);
  38       }
  39    }
  40
  41    // Doesn't work without any source index files
  42    if (Files.size() == 0)
  43    {
  44       _error->Error(_("You must put some 'source' URIs"
  45                     " in your sources.list"));
  46       return;
  47    }
  48
  49    Restart();
  50 }
  51                                                                         /*}}}*/
  52 // SrcRecords::~pkgSrcRecords - Destructor                              /*{{{*/
  53 // ---------------------------------------------------------------------
  54 /* */
  55 pkgSrcRecords::~pkgSrcRecords()
  56 {
  57    // Blow away all the parser objects
  58    for(vector<Parser*>::iterator I = Files.begin(); I != Files.end(); ++I)
  59       delete *I;
  60 }
  61                                                                         /*}}}*/
  62 // SrcRecords::Restart - Restart the search                             /*{{{*/
  63 // ---------------------------------------------------------------------
  64 /* Return all of the parsers to their starting position */
  65 bool pkgSrcRecords::Restart()
  66 {
  67    Current = Files.begin();
  68    for (vector<Parser*>::iterator I = Files.begin();
  69         I != Files.end(); I++)
  70       (*I)->Restart();
  71
  72    return true;
  73 }
  74                                                                         /*}}}*/
  75 // SrcRecords::Find - Find the first source package with the given name /*{{{*/
  76 // ---------------------------------------------------------------------
  77 /* This searches on both source package names and output binary names and
  78    returns the first found. A 'cursor' like system is used to allow this
  79    function to be called multiple times to get successive entries */
  80 pkgSrcRecords::Parser *pkgSrcRecords::Find(const char *Package,bool SrcOnly)
  81 {
  82    if (Current == Files.end())
  83       return 0;
  84
  85    while (true)
  86    {
  87       // Step to the next record, possibly switching files
  88       while ((*Current)->Step() == false)
  89       {
  90          if (_error->PendingError() == true)
  91             return 0;
  92          Current++;
  93          if (Current == Files.end())
  94             return 0;
  95       }
  96
  97       // IO error somehow
  98       if (_error->PendingError() == true)
  99          return 0;
 100
 101       // Source name hit
 102       if ((*Current)->Package() == Package)
 103          return *Current;
 104
 105       if (SrcOnly == true)
 106          continue;
 107
 108       // Check for a binary hit
 109       const char **I = (*Current)->Binaries();
 110       for (; I != 0 && *I != 0; I++)
 111          if (strcmp(Package,*I) == 0)
 112             return *Current;
 113    }
 114 }
 115                                                                         /*}}}*/
 116 // Parser::BuildDepType - Convert a build dep to a string               /*{{{*/
 117 // ---------------------------------------------------------------------
 118 /* */
 119 const char *pkgSrcRecords::Parser::BuildDepType(unsigned char Type)
 120 {
 121    const char *fields[] = {"Build-Depends",
 122                            "Build-Depends-Indep",
 123                            "Build-Conflicts",
 124                            "Build-Conflicts-Indep"};
 125    if (Type < 4)
 126       return fields[Type];
 127    else
 128       return "";
 129 }
 130                                                                         /*}}}*/
 131
 132