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/aptconfiguration.h>
  16 #include <apt-pkg/fileutl.h>
  17 #include <apt-pkg/cacheiterators.h>
  18 #include <apt-pkg/pkgcache.h>
  19 #include <apt-pkg/tagfile.h>
  20
  21 #include <string.h>
  22 #include <algorithm>
  23 #include <string>
  24 #include <vector>
  25 #include <langinfo.h>
  26                                                                         /*}}}*/
  27
  28 using std::string;
  29
  30 // RecordParser::debRecordParser - Constructor                          /*{{{*/
  31 // ---------------------------------------------------------------------
  32 /* */
  33 debRecordParser::debRecordParser(string FileName,pkgCache &Cache) :
  34                   File(FileName,FileFd::ReadOnly, FileFd::Extension),
  35                   Tags(&File, std::max(Cache.Head().MaxVerFileSize,
  36                                        Cache.Head().MaxDescFileSize) + 200)
  37 {
  38 }
  39                                                                         /*}}}*/
  40 // RecordParser::Jump - Jump to a specific record                       /*{{{*/
  41 // ---------------------------------------------------------------------
  42 /* */
  43 bool debRecordParser::Jump(pkgCache::VerFileIterator const &Ver)
  44 {
  45    return Tags.Jump(Section,Ver->Offset);
  46 }
  47 bool debRecordParser::Jump(pkgCache::DescFileIterator const &Desc)
  48 {
  49    return Tags.Jump(Section,Desc->Offset);
  50 }
  51                                                                         /*}}}*/
  52 // RecordParser::FileName - Return the archive filename on the site     /*{{{*/
  53 // ---------------------------------------------------------------------
  54 /* */
  55 string debRecordParser::FileName()
  56 {
  57    return Section.FindS("Filename");
  58 }
  59                                                                         /*}}}*/
  60 // RecordParser::Name - Return the package name                         /*{{{*/
  61 // ---------------------------------------------------------------------
  62 /* */
  63 string debRecordParser::Name()
  64 {
  65    return Section.FindS("Package");
  66 }
  67                                                                         /*}}}*/
  68 // RecordParser::Homepage - Return the package homepage                 /*{{{*/
  69 // ---------------------------------------------------------------------
  70 /* */
  71 string debRecordParser::Homepage()
  72 {
  73    return Section.FindS("Homepage");
  74 }
  75                                                                         /*}}}*/
  76 // RecordParser::MD5Hash - Return the archive hash                      /*{{{*/
  77 // ---------------------------------------------------------------------
  78 /* */
  79 string debRecordParser::MD5Hash()
  80 {
  81    return Section.FindS("MD5Sum");
  82 }
  83                                                                         /*}}}*/
  84 // RecordParser::SHA1Hash - Return the archive hash                     /*{{{*/
  85 // ---------------------------------------------------------------------
  86 /* */
  87 string debRecordParser::SHA1Hash()
  88 {
  89    return Section.FindS("SHA1");
  90 }
  91                                                                         /*}}}*/
  92 // RecordParser::SHA256Hash - Return the archive hash                   /*{{{*/
  93 // ---------------------------------------------------------------------
  94 /* */
  95 string debRecordParser::SHA256Hash()
  96 {
  97    return Section.FindS("SHA256");
  98 }
  99                                                                         /*}}}*/
 100 // RecordParser::SHA512Hash - Return the archive hash                   /*{{{*/
 101 // ---------------------------------------------------------------------
 102 /* */
 103 string debRecordParser::SHA512Hash()
 104 {
 105    return Section.FindS("SHA512");
 106 }
 107                                                                         /*}}}*/
 108 // RecordParser::Maintainer - Return the maintainer email               /*{{{*/
 109 // ---------------------------------------------------------------------
 110 /* */
 111 string debRecordParser::Maintainer()
 112 {
 113    return Section.FindS("Maintainer");
 114 }
 115                                                                         /*}}}*/
 116 // RecordParser::RecordField - Return the value of an arbitrary field       /*{{*/
 117 // ---------------------------------------------------------------------
 118 /* */
 119 string debRecordParser::RecordField(const char *fieldName)
 120 {
 121    return Section.FindS(fieldName);
 122 }
 123
 124                                                                         /*}}}*/
 125 // RecordParser::ShortDesc - Return a 1 line description                /*{{{*/
 126 // ---------------------------------------------------------------------
 127 /* */
 128 string debRecordParser::ShortDesc()
 129 {
 130    string Res = LongDesc();
 131    string::size_type Pos = Res.find('\n');
 132    if (Pos == string::npos)
 133       return Res;
 134    return string(Res,0,Pos);
 135 }
 136                                                                         /*}}}*/
 137 // RecordParser::LongDesc - Return a longer description                 /*{{{*/
 138 // ---------------------------------------------------------------------
 139 /* */
 140 string debRecordParser::LongDesc()
 141 {
 142   string orig, dest;
 143
 144   if (!Section.FindS("Description").empty())
 145      orig = Section.FindS("Description").c_str();
 146   else
 147   {
 148      std::vector<string> const lang = APT::Configuration::getLanguages();
 149      for (std::vector<string>::const_iterator l = lang.begin();
 150           orig.empty() && l != lang.end(); ++l)
 151         orig = Section.FindS(string("Description-").append(*l).c_str());
 152   }
 153
 154   char const * const codeset = nl_langinfo(CODESET);
 155   if (strcmp(codeset,"UTF-8") != 0) {
 156      UTF8ToCodeset(codeset, orig, &dest);
 157      orig = dest;
 158    }
 159
 160    return orig;
 161 }
 162                                                                         /*}}}*/
 163
 164 static const char *SourceVerSeparators = " ()";
 165
 166 // RecordParser::SourcePkg - Return the source package name if any      /*{{{*/
 167 // ---------------------------------------------------------------------
 168 /* */
 169 string debRecordParser::SourcePkg()
 170 {
 171    string Res = Section.FindS("Source");
 172    string::size_type Pos = Res.find_first_of(SourceVerSeparators);
 173    if (Pos == string::npos)
 174       return Res;
 175    return string(Res,0,Pos);
 176 }
 177                                                                         /*}}}*/
 178 // RecordParser::SourceVer - Return the source version number if present        /*{{{*/
 179 // ---------------------------------------------------------------------
 180 /* */
 181 string debRecordParser::SourceVer()
 182 {
 183    string Pkg = Section.FindS("Source");
 184    string::size_type Pos = Pkg.find_first_of(SourceVerSeparators);
 185    if (Pos == string::npos)
 186       return "";
 187
 188    string::size_type VerStart = Pkg.find_first_not_of(SourceVerSeparators, Pos);
 189    if(VerStart == string::npos)
 190      return "";
 191
 192    string::size_type VerEnd = Pkg.find_first_of(SourceVerSeparators, VerStart);
 193    if(VerEnd == string::npos)
 194      // Corresponds to the case of, e.g., "foo (1.2" without a closing
 195      // paren.  Be liberal and guess what it means.
 196      return string(Pkg, VerStart);
 197    else
 198      return string(Pkg, VerStart, VerEnd - VerStart);
 199 }
 200                                                                         /*}}}*/
 201 // RecordParser::GetRec - Return the whole record                       /*{{{*/
 202 // ---------------------------------------------------------------------
 203 /* */
 204 void debRecordParser::GetRec(const char *&Start,const char *&Stop)
 205 {
 206    Section.GetSection(Start,Stop);
 207 }
 208                                                                         /*}}}*/