src/lyxtextclasslist.C

   1 /**
   2  * \file lyxtextclasslist.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author John Levon
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "lyxtextclasslist.h"
  15 #include "lyxtextclass.h"
  16 #include "debug.h"
  17 #include "lyxlex.h"
  18
  19 #include "support/filetools.h"
  20
  21 #include <boost/bind.hpp>
  22
  23 using lyx::textclass_type;
  24
  25 using lyx::support::LibFileSearch;
  26 using lyx::support::MakeDisplayPath;
  27
  28 using boost::bind;
  29
  30 #ifndef CXX_GLOBAL_CSTD
  31 using std::exit;
  32 #endif
  33
  34 using std::endl;
  35 using std::equal_to;
  36 using std::find_if;
  37 using std::make_pair;
  38 using std::sort;
  39 using std::string;
  40 using std::pair;
  41
  42
  43 // Gets textclass number from name
  44 pair<bool, textclass_type> const
  45 LyXTextClassList::NumberOfClass(string const & textclass) const
  46 {
  47         ClassList::const_iterator cit =
  48                 find_if(classlist_.begin(), classlist_.end(),
  49                         bind(equal_to<string>(),
  50                              bind(&LyXTextClass::name, _1),
  51                              textclass));
  52
  53         return cit != classlist_.end() ?
  54                 make_pair(true, textclass_type(cit - classlist_.begin())) :
  55                 make_pair(false, textclass_type(0));
  56 }
  57
  58
  59 // Gets a textclass structure from number
  60 LyXTextClass const &
  61 LyXTextClassList::operator[](textclass_type textclass) const
  62 {
  63         classlist_[textclass].load();
  64         if (textclass < classlist_.size())
  65                 return classlist_[textclass];
  66         else
  67                 return classlist_[0];
  68 }
  69
  70
  71 // used when sorting the textclass list.
  72 class less_textclass_avail_desc
  73         : public std::binary_function<LyXTextClass, LyXTextClass, int>
  74 {
  75 public:
  76         int operator()(LyXTextClass const & tc1,
  77                        LyXTextClass const & tc2) const
  78         {
  79                 // Ordering criteria:
  80                 //   1. Availability of text class
  81                 //   2. Description (lexicographic)
  82
  83                 return (tc1.isTeXClassAvailable() && !tc2.isTeXClassAvailable()) ||
  84                         (tc1.isTeXClassAvailable() == tc2.isTeXClassAvailable() &&
  85                          tc1.description() < tc2.description());
  86         }
  87 };
  88
  89
  90 // Reads LyX textclass definitions according to textclass config file
  91 bool LyXTextClassList::Read()
  92 {
  93         LyXLex lex(0, 0);
  94         string real_file = LibFileSearch("", "textclass.lst");
  95         lyxerr[Debug::TCLASS] << "Reading textclasses from `"
  96                               << real_file << '\'' << endl;
  97
  98         if (real_file.empty()) {
  99                 lyxerr << "LyXTextClassList::Read: unable to find "
 100                         "textclass file  `" << MakeDisplayPath(real_file, 1000)
 101                        << "'. Exiting." << endl;
 102                 return false;
 103                 // This causes LyX to end... Not a desirable behaviour. Lgb
 104                 // What do you propose? That the user gets a file dialog
 105                 // and is allowed to hunt for the file? (Asger)
 106                 // more that we have a layout for minimal.cls statically
 107                 // compiled in... (Lgb)
 108         }
 109
 110         if (!lex.setFile(real_file)) {
 111                 lyxerr << "LyXTextClassList::Read: "
 112                         "lyxlex was not able to set file: "
 113                        << real_file << endl;
 114         }
 115
 116         if (!lex.isOK()) {
 117                 lyxerr << "LyXTextClassList::Read: unable to open "
 118                         "textclass file  `" << MakeDisplayPath(real_file, 1000)
 119                        << "'\nCheck your installation. LyX can't continue."
 120                        << endl;
 121                 return false;
 122         }
 123
 124         bool finished = false;
 125         // Parse config-file
 126         lyxerr[Debug::TCLASS] << "Starting parsing of textclass.lst" << endl;
 127         while (lex.isOK() && !finished) {
 128                 lyxerr[Debug::TCLASS] << "\tline by line" << endl;
 129                 switch (lex.lex()) {
 130                 case LyXLex::LEX_FEOF:
 131                         finished = true;
 132                         break;
 133                 default:
 134                         string const fname = lex.getString();
 135                         lyxerr[Debug::TCLASS] << "Fname: " << fname << endl;
 136                         if (lex.next()) {
 137                                 string const clname = lex.getString();
 138                                 lyxerr[Debug::TCLASS] << "Clname: " << clname << endl;
 139                                 if (lex.next()) {
 140                                         string const desc = lex.getString();
 141                                         lyxerr[Debug::TCLASS] << "Desc: " << desc << endl;
 142                                         if (lex.next()) {
 143                                                 bool avail = lex.getBool();
 144                                                 lyxerr[Debug::TCLASS] << "Avail: " << avail << endl;
 145                                                 // This code is run when we have
 146                                                 // fname, clname, desc, and avail
 147                                                 LyXTextClass tmpl(fname, clname, desc, avail);
 148                                                 if (lyxerr.debugging(Debug::TCLASS)) {
 149                                                         tmpl.load();
 150                                                 }
 151                                                 classlist_.push_back(tmpl);
 152                                         }
 153                                 }
 154                         }
 155                 }
 156         }
 157         lyxerr[Debug::TCLASS] << "End of parsing of textclass.lst" << endl;
 158
 159         if (classlist_.empty()) {
 160                 lyxerr << "LyXTextClassList::Read: no textclasses found!"
 161                        << endl;
 162                 return false;
 163         }
 164         // Ok everything loaded ok, now sort the list.
 165         sort(classlist_.begin(), classlist_.end(), less_textclass_avail_desc());
 166         return true;
 167 }
 168
 169
 170 // Global variable: textclass table.
 171 LyXTextClassList textclasslist;
 172
 173
 174 // Reads the style files
 175 void LyXSetStyle()
 176 {
 177         lyxerr[Debug::TCLASS] << "LyXSetStyle: parsing configuration..." << endl;
 178
 179         if (!textclasslist.Read()) {
 180                 lyxerr[Debug::TCLASS] << "LyXSetStyle: an error occured "
 181                         "during parsing.\n             Exiting." << endl;
 182                 exit(1);
 183         }
 184
 185         lyxerr[Debug::TCLASS] << "LyXSetStyle: configuration parsed." << endl;
 186 }