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<config.h>
  15
  16 #include <apt-pkg/srcrecords.h>
  17 #include <apt-pkg/error.h>
  18 #include <apt-pkg/sourcelist.h>
  19 #include <apt-pkg/strutl.h>
  20
  21 #include <apti18n.h>
  22                                                                         /*}}}*/
  23
  24 // SrcRecords::pkgSrcRecords - Constructor                              /*{{{*/
  25 // ---------------------------------------------------------------------
  26 /* Open all the source index files */
  27 pkgSrcRecords::pkgSrcRecords(pkgSourceList &List) : Files(0), Current(0)
  28 {
  29    for (pkgSourceList::const_iterator I = List.begin(); I != List.end(); ++I)
  30    {
  31       vector<pkgIndexFile *> *Indexes = (*I)->GetIndexFiles();
  32       for (vector<pkgIndexFile *>::const_iterator J = Indexes->begin();
  33            J != Indexes->end(); ++J)
  34       {
  35          Parser* P = (*J)->CreateSrcParser();
  36          if (_error->PendingError() == true)
  37             return;
  38          if (P != 0)
  39             Files.push_back(P);
  40       }
  41    }
  42
  43    // Doesn't work without any source index files
  44    if (Files.size() == 0)
  45    {
  46       _error->Error(_("You must put some 'source' URIs"
  47                     " in your sources.list"));
  48       return;
  49    }
  50
  51    Restart();
  52 }
  53                                                                         /*}}}*/
  54 // SrcRecords::~pkgSrcRecords - Destructor                              /*{{{*/
  55 // ---------------------------------------------------------------------
  56 /* */
  57 pkgSrcRecords::~pkgSrcRecords()
  58 {
  59    // Blow away all the parser objects
  60    for(vector<Parser*>::iterator I = Files.begin(); I != Files.end(); ++I)
  61       delete *I;
  62 }
  63                                                                         /*}}}*/
  64 // SrcRecords::Restart - Restart the search                             /*{{{*/
  65 // ---------------------------------------------------------------------
  66 /* Return all of the parsers to their starting position */
  67 bool pkgSrcRecords::Restart()
  68 {
  69    Current = Files.begin();
  70    for (vector<Parser*>::iterator I = Files.begin();
  71         I != Files.end(); ++I)
  72       (*I)->Restart();
  73
  74    return true;
  75 }
  76                                                                         /*}}}*/
  77 // SrcRecords::Find - Find the first source package with the given name /*{{{*/
  78 // ---------------------------------------------------------------------
  79 /* This searches on both source package names and output binary names and
  80    returns the first found. A 'cursor' like system is used to allow this
  81    function to be called multiple times to get successive entries */
  82 pkgSrcRecords::Parser *pkgSrcRecords::Find(const char *Package,bool const &SrcOnly)
  83 {
  84    if (Current == Files.end())
  85       return 0;
  86
  87    while (true)
  88    {
  89       // Step to the next record, possibly switching files
  90       while ((*Current)->Step() == false)
  91       {
  92          if (_error->PendingError() == true)
  93             return 0;
  94          ++Current;
  95          if (Current == Files.end())
  96             return 0;
  97       }
  98
  99       // IO error somehow
 100       if (_error->PendingError() == true)
 101          return 0;
 102
 103       // Source name hit
 104       if ((*Current)->Package() == Package)
 105          return *Current;
 106
 107       if (SrcOnly == true)
 108          continue;
 109
 110       // Check for a binary hit
 111       const char **I = (*Current)->Binaries();
 112       for (; I != 0 && *I != 0; ++I)
 113          if (strcmp(Package,*I) == 0)
 114             return *Current;
 115    }
 116 }
 117                                                                         /*}}}*/
 118 // Parser::BuildDepType - Convert a build dep to a string               /*{{{*/
 119 // ---------------------------------------------------------------------
 120 /* */
 121 const char *pkgSrcRecords::Parser::BuildDepType(unsigned char const &Type)
 122 {
 123    const char *fields[] = {"Build-Depends",
 124                            "Build-Depends-Indep",
 125                            "Build-Conflicts",
 126                            "Build-Conflicts-Indep"};
 127    if (Type < 4)
 128       return fields[Type];
 129    else
 130       return "";
 131 }
 132                                                                         /*}}}*/
 133
 134