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