apt-pkg/deb/debrecords.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: debrecords.cc,v 1.10 2001/03/13 06:51:46 jgg Exp $
   4 /* ######################################################################
   5
   6    Debian Package Records - Parser for debian package records
   7
   8    ##################################################################### */
   9                                                                         /*}}}*/
  10 // Include Files                                                        /*{{{*/
  11 #include <config.h>
  12
  13 #include <apt-pkg/debrecords.h>
  14 #include <apt-pkg/strutl.h>
  15 #include <apt-pkg/error.h>
  16 #include <apt-pkg/aptconfiguration.h>
  17 #include <apt-pkg/fileutl.h>
  18
  19 #include <langinfo.h>
  20                                                                         /*}}}*/
  21
  22 using std::string;
  23
  24 // RecordParser::debRecordParser - Constructor                          /*{{{*/
  25 // ---------------------------------------------------------------------
  26 /* */
  27 debRecordParser::debRecordParser(string FileName,pkgCache &Cache) :
  28                   File(FileName,FileFd::ReadOnly, FileFd::Extension),
  29                   Tags(&File, std::max(Cache.Head().MaxVerFileSize,
  30                                        Cache.Head().MaxDescFileSize) + 200)
  31 {
  32 }
  33                                                                         /*}}}*/
  34 // RecordParser::Jump - Jump to a specific record                       /*{{{*/
  35 // ---------------------------------------------------------------------
  36 /* */
  37 bool debRecordParser::Jump(pkgCache::VerFileIterator const &Ver)
  38 {
  39    return Tags.Jump(Section,Ver->Offset);
  40 }
  41 bool debRecordParser::Jump(pkgCache::DescFileIterator const &Desc)
  42 {
  43    return Tags.Jump(Section,Desc->Offset);
  44 }
  45                                                                         /*}}}*/
  46 // RecordParser::FileName - Return the archive filename on the site     /*{{{*/
  47 // ---------------------------------------------------------------------
  48 /* */
  49 string debRecordParser::FileName()
  50 {
  51    return Section.FindS("Filename");
  52 }
  53                                                                         /*}}}*/
  54 // RecordParser::Name - Return the package name                         /*{{{*/
  55 // ---------------------------------------------------------------------
  56 /* */
  57 string debRecordParser::Name()
  58 {
  59    return Section.FindS("Package");
  60 }
  61                                                                         /*}}}*/
  62 // RecordParser::Homepage - Return the package homepage                 /*{{{*/
  63 // ---------------------------------------------------------------------
  64 /* */
  65 string debRecordParser::Homepage()
  66 {
  67    return Section.FindS("Homepage");
  68 }
  69                                                                         /*}}}*/
  70 // RecordParser::MD5Hash - Return the archive hash                      /*{{{*/
  71 // ---------------------------------------------------------------------
  72 /* */
  73 string debRecordParser::MD5Hash()
  74 {
  75    return Section.FindS("MD5Sum");
  76 }
  77                                                                         /*}}}*/
  78 // RecordParser::SHA1Hash - Return the archive hash                     /*{{{*/
  79 // ---------------------------------------------------------------------
  80 /* */
  81 string debRecordParser::SHA1Hash()
  82 {
  83    return Section.FindS("SHA1");
  84 }
  85                                                                         /*}}}*/
  86 // RecordParser::SHA256Hash - Return the archive hash                   /*{{{*/
  87 // ---------------------------------------------------------------------
  88 /* */
  89 string debRecordParser::SHA256Hash()
  90 {
  91    return Section.FindS("SHA256");
  92 }
  93                                                                         /*}}}*/
  94 // RecordParser::SHA512Hash - Return the archive hash                   /*{{{*/
  95 // ---------------------------------------------------------------------
  96 /* */
  97 string debRecordParser::SHA512Hash()
  98 {
  99    return Section.FindS("SHA512");
 100 }
 101                                                                         /*}}}*/
 102 // RecordParser::Maintainer - Return the maintainer email               /*{{{*/
 103 // ---------------------------------------------------------------------
 104 /* */
 105 string debRecordParser::Maintainer()
 106 {
 107    return Section.FindS("Maintainer");
 108 }
 109                                                                         /*}}}*/
 110 // RecordParser::RecordField - Return the value of an arbitrary field       /*{{*/
 111 // ---------------------------------------------------------------------
 112 /* */
 113 string debRecordParser::RecordField(const char *fieldName)
 114 {
 115    return Section.FindS(fieldName);
 116 }
 117
 118                                                                         /*}}}*/
 119 // RecordParser::ShortDesc - Return a 1 line description                /*{{{*/
 120 // ---------------------------------------------------------------------
 121 /* */
 122 string debRecordParser::ShortDesc()
 123 {
 124    string Res = LongDesc();
 125    string::size_type Pos = Res.find('\n');
 126    if (Pos == string::npos)
 127       return Res;
 128    return string(Res,0,Pos);
 129 }
 130                                                                         /*}}}*/
 131 // RecordParser::LongDesc - Return a longer description                 /*{{{*/
 132 // ---------------------------------------------------------------------
 133 /* */
 134 string debRecordParser::LongDesc()
 135 {
 136   string orig, dest;
 137
 138   if (!Section.FindS("Description").empty())
 139      orig = Section.FindS("Description").c_str();
 140   else
 141   {
 142      std::vector<string> const lang = APT::Configuration::getLanguages();
 143      for (std::vector<string>::const_iterator l = lang.begin();
 144           orig.empty() && l != lang.end(); ++l)
 145         orig = Section.FindS(string("Description-").append(*l).c_str());
 146   }
 147
 148   char const * const codeset = nl_langinfo(CODESET);
 149   if (strcmp(codeset,"UTF-8") != 0) {
 150      UTF8ToCodeset(codeset, orig, &dest);
 151      orig = dest;
 152    }
 153
 154    return orig;
 155 }
 156                                                                         /*}}}*/
 157
 158 static const char *SourceVerSeparators = " ()";
 159
 160 // RecordParser::SourcePkg - Return the source package name if any      /*{{{*/
 161 // ---------------------------------------------------------------------
 162 /* */
 163 string debRecordParser::SourcePkg()
 164 {
 165    string Res = Section.FindS("Source");
 166    string::size_type Pos = Res.find_first_of(SourceVerSeparators);
 167    if (Pos == string::npos)
 168       return Res;
 169    return string(Res,0,Pos);
 170 }
 171                                                                         /*}}}*/
 172 // RecordParser::SourceVer - Return the source version number if present        /*{{{*/
 173 // ---------------------------------------------------------------------
 174 /* */
 175 string debRecordParser::SourceVer()
 176 {
 177    string Pkg = Section.FindS("Source");
 178    string::size_type Pos = Pkg.find_first_of(SourceVerSeparators);
 179    if (Pos == string::npos)
 180       return "";
 181
 182    string::size_type VerStart = Pkg.find_first_not_of(SourceVerSeparators, Pos);
 183    if(VerStart == string::npos)
 184      return "";
 185
 186    string::size_type VerEnd = Pkg.find_first_of(SourceVerSeparators, VerStart);
 187    if(VerEnd == string::npos)
 188      // Corresponds to the case of, e.g., "foo (1.2" without a closing
 189      // paren.  Be liberal and guess what it means.
 190      return string(Pkg, VerStart);
 191    else
 192      return string(Pkg, VerStart, VerEnd - VerStart);
 193 }
 194                                                                         /*}}}*/
 195 // RecordParser::GetRec - Return the whole record                       /*{{{*/
 196 // ---------------------------------------------------------------------
 197 /* */
 198 void debRecordParser::GetRec(const char *&Start,const char *&Stop)
 199 {
 200    Section.GetSection(Start,Stop);
 201 }
 202                                                                         /*}}}*/