apt-pkg/sourcelist.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: sourcelist.cc,v 1.4 1998/07/19 04:22:04 jgg Exp $
   4 /* ######################################################################
   5
   6    List of Sources
   7
   8    ##################################################################### */
   9                                                                         /*}}}*/
  10 // Include Files                                                        /*{{{*/
  11 #ifdef __GNUG__
  12 #pragma implementation "apt-pkg/sourcelist.h"
  13 #endif
  14
  15 #include <apt-pkg/sourcelist.h>
  16 #include <apt-pkg/error.h>
  17 #include <apt-pkg/fileutl.h>
  18 #include <apt-pkg/configuration.h>
  19 #include <strutl.h>
  20
  21 #include <fstream.h>
  22 #include <stdio.h>
  23 #include <unistd.h>
  24 #include <sys/stat.h>
  25                                                                         /*}}}*/
  26
  27 // SourceList::pkgSourceList - Constructors                             /*{{{*/
  28 // ---------------------------------------------------------------------
  29 /* */
  30 pkgSourceList::pkgSourceList()
  31 {
  32 }
  33
  34 pkgSourceList::pkgSourceList(string File)
  35 {
  36    Read(File);
  37 }
  38                                                                         /*}}}*/
  39 // SourceList::ReadMainList - Read the main source list from etc        /*{{{*/
  40 // ---------------------------------------------------------------------
  41 /* */
  42 bool pkgSourceList::ReadMainList()
  43 {
  44    return Read(_config->Find("APT::Etc:sourcelist"));
  45 }
  46                                                                         /*}}}*/
  47 // SourceList::Read - Parse the sourcelist file                         /*{{{*/
  48 // ---------------------------------------------------------------------
  49 /* */
  50 bool pkgSourceList::Read(string File)
  51 {
  52    // Open the stream for reading
  53    ifstream F(File.c_str(),ios::in | ios::nocreate);
  54    if (!F != 0)
  55       return _error->Errno("ifstream::ifstream","Opening %s",File.c_str());
  56
  57    List.erase(List.begin(),List.end());
  58    char Buffer[300];
  59
  60    int CurLine = 0;
  61    while (F.eof() == false)
  62    {
  63       F.getline(Buffer,sizeof(Buffer));
  64       CurLine++;
  65       _strtabexpand(Buffer,sizeof(Buffer));
  66       _strstrip(Buffer);
  67
  68       // Comment or blank
  69       if (Buffer[0] == '#' || Buffer[0] == 0)
  70          continue;
  71
  72       // Grok it
  73       string Type;
  74       string URI;
  75       Item Itm;
  76       char *C = Buffer;
  77       if (ParseQuoteWord(C,Type) == false)
  78          return _error->Error("Malformed line %u in source list %s (type)",CurLine,File.c_str());
  79       if (ParseQuoteWord(C,URI) == false)
  80          return _error->Error("Malformed line %u in source list %s (URI)",CurLine,File.c_str());
  81       if (ParseQuoteWord(C,Itm.Dist) == false)
  82          return _error->Error("Malformed line %u in source list %s (dist)",CurLine,File.c_str());
  83       if (Itm.SetType(Type) == false)
  84          return _error->Error("Malformed line %u in source list %s (type parse)",CurLine,File.c_str());
  85       if (Itm.SetURI(URI) == false)
  86          return _error->Error("Malformed line %u in source list %s (URI parse)",CurLine,File.c_str());
  87
  88       // Check for an absolute dists specification.
  89       if (Itm.Dist.empty() == false && Itm.Dist[Itm.Dist.size() - 1] == '/')
  90       {
  91          if (ParseQuoteWord(C,Itm.Section) == true)
  92             return _error->Error("Malformed line %u in source list %s (Absolute dist)",CurLine,File.c_str());
  93          Itm.Dist = SubstVar(Itm.Dist,"$(ARCH)",_config->Find("APT::Architecture"));
  94          List.push_back(Itm);
  95          continue;
  96       }
  97
  98       // Grab the rest of the dists
  99       if (ParseQuoteWord(C,Itm.Section) == false)
 100             return _error->Error("Malformed line %u in source list %s (dist parse)",CurLine,File.c_str());
 101
 102       do
 103       {
 104          List.push_back(Itm);
 105       }
 106       while (ParseQuoteWord(C,Itm.Section) == true);
 107    }
 108    return true;
 109 }
 110                                                                         /*}}}*/
 111 // SourceList::Item << - Writes the item to a stream                    /*{{{*/
 112 // ---------------------------------------------------------------------
 113 /* This is not suitable for rebuilding the sourcelist file but it good for
 114    debugging. */
 115 ostream &operator <<(ostream &O,pkgSourceList::Item &Itm)
 116 {
 117    O << Itm.Type << ' ' << Itm.URI << ' ' << Itm.Dist << ' ' << Itm.Section;
 118    return O;
 119 }
 120                                                                         /*}}}*/
 121 // SourceList::Item::SetType - Sets the distribution type               /*{{{*/
 122 // ---------------------------------------------------------------------
 123 /* */
 124 bool pkgSourceList::Item::SetType(string S)
 125 {
 126    if (S == "deb")
 127    {
 128       Type = Deb;
 129       return true;
 130    }
 131
 132    return true;
 133 }
 134                                                                         /*}}}*/
 135 // SourceList::Item::SetURI - Set the URI                               /*{{{*/
 136 // ---------------------------------------------------------------------
 137 /* For simplicity we strip the scheme off the uri */
 138 bool pkgSourceList::Item::SetURI(string S)
 139 {
 140    if (S.empty() == true)
 141       return false;
 142
 143    if (S.find(':') == string::npos)
 144       return false;
 145
 146    S = SubstVar(S,"$(ARCH)",_config->Find("APT::Architecture"));
 147
 148    // Make sure that the URN is / postfixed
 149    URI = S;
 150    if (URI[URI.size() - 1] != '/')
 151       URI += '/';
 152
 153    return true;
 154 }
 155                                                                         /*}}}*/
 156 // SourceList::Item::PackagesURI - Returns a URI to the packages file   /*{{{*/
 157 // ---------------------------------------------------------------------
 158 /* */
 159 string pkgSourceList::Item::PackagesURI() const
 160 {
 161    string Res;
 162    switch (Type)
 163    {
 164       case Deb:
 165       if (Dist[Dist.size() - 1] == '/')
 166          Res = URI + Dist;
 167       else
 168          Res = URI + "dists/" + Dist + '/' + Section +
 169          "/binary-" + _config->Find("APT::Architecture") + '/';
 170
 171       Res += "Packages";
 172       break;
 173    };
 174    return Res;
 175 }
 176                                                                         /*}}}*/
 177 // SourceList::Item::PackagesInfo - Shorter version of the URI          /*{{{*/
 178 // ---------------------------------------------------------------------
 179 /* This is a shorter version that is designed to be < 60 chars or so */
 180 string pkgSourceList::Item::PackagesInfo() const
 181 {
 182    string Res;
 183    switch (Type)
 184    {
 185       case Deb:
 186       Res += SiteOnly(URI) + ' ';
 187       if (Dist[Dist.size() - 1] == '/')
 188          Res += Dist;
 189       else
 190          Res += Dist + '/' + Section;
 191
 192       Res += " Packages";
 193       break;
 194    };
 195    return Res;
 196 }
 197                                                                         /*}}}*/
 198 // SourceList::Item::ArchiveInfo - Shorter version of the archive spec  /*{{{*/
 199 // ---------------------------------------------------------------------
 200 /* This is a shorter version that is designed to be < 60 chars or so */
 201 string pkgSourceList::Item::ArchiveInfo(pkgCache::VerIterator Ver) const
 202 {
 203    string Res;
 204    switch (Type)
 205    {
 206       case Deb:
 207       Res += SiteOnly(URI) + ' ';
 208       if (Dist[Dist.size() - 1] == '/')
 209          Res += Dist;
 210       else
 211          Res += Dist + '/' + Section;
 212
 213       Res += " ";
 214       Res += Ver.ParentPkg().Name();
 215       break;
 216    };
 217    return Res;
 218 }
 219                                                                         /*}}}*/
 220 // SourceList::Item::ArchiveURI - Returns a URI to the given archive    /*{{{*/
 221 // ---------------------------------------------------------------------
 222 /* */
 223 string pkgSourceList::Item::ArchiveURI(string File) const
 224 {
 225    string Res;
 226    switch (Type)
 227    {
 228       case Deb:
 229       Res = URI + File;
 230       break;
 231    };
 232    return Res;
 233 }
 234                                                                         /*}}}*/
 235 // SourceList::Item::SiteOnly - Strip off the path part of a URI        /*{{{*/
 236 // ---------------------------------------------------------------------
 237 /* */
 238 string pkgSourceList::Item::SiteOnly(string URI) const
 239 {
 240    unsigned int Pos = URI.find(':');
 241    if (Pos == string::npos || Pos + 3 > URI.length())
 242       return URI;
 243    if (URI[Pos + 1] != '/' || URI[Pos + 2] != '/')
 244       return URI;
 245
 246    Pos = URI.find('/',Pos + 3);
 247    if (Pos == string::npos)
 248       return URI;
 249    return string(URI,0,Pos);
 250 }
 251                                                                         /*}}}*/