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 struct less_textclass_avail_desc
  73         : public std::binary_function<LyXTextClass, LyXTextClass, int>
  74 {
  75         int operator()(LyXTextClass const & tc1,
  76                        LyXTextClass const & tc2) const
  77         {
  78                 // Ordering criteria:
  79                 //   1. Availability of text class
  80                 //   2. Description (lexicographic)
  81
  82                 return (tc1.isTeXClassAvailable() && !tc2.isTeXClassAvailable()) ||
  83                         (tc1.isTeXClassAvailable() == tc2.isTeXClassAvailable() &&
  84                          tc1.description() < tc2.description());
  85         }
  86 };
  87
  88
  89 // Reads LyX textclass definitions according to textclass config file
  90 bool LyXTextClassList::Read()
  91 {
  92         LyXLex lex(0, 0);
  93         string real_file = LibFileSearch("", "textclass.lst");
  94         lyxerr[Debug::TCLASS] << "Reading textclasses from `"
  95                               << real_file << '\'' << endl;
  96
  97         if (real_file.empty()) {
  98                 lyxerr << "LyXTextClassList::Read: unable to find "
  99                         "textclass file  `" << MakeDisplayPath(real_file, 1000)
 100                        << "'. Exiting." << endl;
 101                 return false;
 102                 // This causes LyX to end... Not a desirable behaviour. Lgb
 103                 // What do you propose? That the user gets a file dialog
 104                 // and is allowed to hunt for the file? (Asger)
 105                 // more that we have a layout for minimal.cls statically
 106                 // compiled in... (Lgb)
 107         }
 108
 109         if (!lex.setFile(real_file)) {
 110                 lyxerr << "LyXTextClassList::Read: "
 111                         "lyxlex was not able to set file: "
 112                        << real_file << endl;
 113         }
 114
 115         if (!lex.isOK()) {
 116                 lyxerr << "LyXTextClassList::Read: unable to open "
 117                         "textclass file  `" << MakeDisplayPath(real_file, 1000)
 118                        << "'\nCheck your installation. LyX can't continue."
 119                        << endl;
 120                 return false;
 121         }
 122
 123         bool finished = false;
 124         // Parse config-file
 125         lyxerr[Debug::TCLASS] << "Starting parsing of textclass.lst" << endl;
 126         while (lex.isOK() && !finished) {
 127                 lyxerr[Debug::TCLASS] << "\tline by line" << endl;
 128                 switch (lex.lex()) {
 129                 case LyXLex::LEX_FEOF:
 130                         finished = true;
 131                         break;
 132                 default:
 133                         string const fname = lex.getString();
 134                         lyxerr[Debug::TCLASS] << "Fname: " << fname << endl;
 135                         if (lex.next()) {
 136                                 string const clname = lex.getString();
 137                                 lyxerr[Debug::TCLASS] << "Clname: " << clname << endl;
 138                                 if (lex.next()) {
 139                                         string const desc = lex.getString();
 140                                         lyxerr[Debug::TCLASS] << "Desc: " << desc << endl;
 141                                         if (lex.next()) {
 142                                                 bool avail = lex.getBool();
 143                                                 lyxerr[Debug::TCLASS] << "Avail: " << avail << endl;
 144                                                 // This code is run when we have
 145                                                 // fname, clname, desc, and avail
 146                                                 LyXTextClass tmpl(fname, clname, desc, avail);
 147                                                 if (lyxerr.debugging(Debug::TCLASS)) {
 148                                                         tmpl.load();
 149                                                 }
 150                                                 classlist_.push_back(tmpl);
 151                                         }
 152                                 }
 153                         }
 154                 }
 155         }
 156         lyxerr[Debug::TCLASS] << "End of parsing of textclass.lst" << endl;
 157
 158         if (classlist_.empty()) {
 159                 lyxerr << "LyXTextClassList::Read: no textclasses found!"
 160                        << endl;
 161                 return false;
 162         }
 163         // Ok everything loaded ok, now sort the list.
 164         sort(classlist_.begin(), classlist_.end(), less_textclass_avail_desc());
 165         return true;
 166 }
 167
 168
 169 // Global variable: textclass table.
 170 LyXTextClassList textclasslist;
 171
 172
 173 // Reads the style files
 174 void LyXSetStyle()
 175 {
 176         lyxerr[Debug::TCLASS] << "LyXSetStyle: parsing configuration..." << endl;
 177
 178         if (!textclasslist.Read()) {
 179                 lyxerr[Debug::TCLASS] << "LyXSetStyle: an error occured "
 180                         "during parsing.\n             Exiting." << endl;
 181                 exit(1);
 182         }
 183
 184         lyxerr[Debug::TCLASS] << "LyXSetStyle: configuration parsed." << endl;
 185 }