src/CmdDef.cpp

   1 /**
   2  * \file CmdDef.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Bernhard Roider
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "CmdDef.h"
  14
  15 #include "LyXAction.h"
  16 #include "Lexer.h"
  17
  18 #include "support/debug.h"
  19 #include "support/FileName.h"
  20 #include "support/filetools.h"
  21 #include "support/lstrings.h"
  22
  23 #include <ostream>
  24 #include <string>
  25
  26 using namespace std;
  27 using namespace lyx::support;
  28
  29 namespace lyx {
  30
  31 namespace {
  32
  33 enum CmdDefTags {
  34         BN_DEFFILE,
  35         BN_DEFINE
  36 };
  37
  38 LexerKeyword cmdDefTags[] = {
  39         { "\\def_file", BN_DEFFILE },
  40         { "\\define", BN_DEFINE }
  41 };
  42
  43 }
  44
  45
  46 bool CmdDef::read(string const & def_file)
  47 {
  48         Lexer lexrc(cmdDefTags);
  49         if (lyxerr.debugging(Debug::PARSER))
  50                 lexrc.printTable(lyxerr);
  51
  52         FileName const tmp(i18nLibFileSearch("commands", def_file, "def"));
  53         lexrc.setFile(tmp);
  54         if (!lexrc.isOK()) {
  55                 lyxerr << "CmdDef::read: cannot open def file:"
  56                        << tmp << endl;
  57                 return false;
  58         }
  59
  60         bool error = false;
  61         while (lexrc.isOK()) {
  62                 switch (lexrc.lex()) {
  63                 case Lexer::LEX_UNDEF:
  64                         lexrc.printError("Unknown tag `$$Token'");
  65                         error = true;
  66                         continue;
  67                 case Lexer::LEX_FEOF:
  68                         continue;
  69                 case BN_DEFINE:
  70                 {
  71                         string name, def;
  72
  73                         if (lexrc.next()) {
  74                                 name = lexrc.getString();
  75                         } else {
  76                                 lexrc.printError("BN_DEFINE: Missing command name");
  77                                 error = true;
  78                                 break;
  79                         }
  80
  81                         if (lexrc.next(true)) {
  82                                 def = lexrc.getString();
  83                         } else {
  84                                 lexrc.printError("BN_DEFINE: missing command definition");
  85                                 error = true;
  86                                 break;
  87                         }
  88
  89                         newCmdDefResult e = newCmdDef(name, def);
  90                         switch (e) {
  91                         case CmdDefNameEmpty:
  92                                 lexrc.printError("BN_DEFINE: Command name is empty");
  93                                 error = true;
  94                                 break;
  95                         case CmdDefExists:
  96                                 lexrc.printError("BN_DEFINE: Command `" + name + "' already defined");
  97                                 error = true;
  98                                 break;
  99                         case CmdDefInvalid:
 100                                 lexrc.printError("BN_DEFINE: Command definition for `" + name + "' is not valid");
 101                                 error = true;
 102                                 break;
 103                         case CmdDefOk:
 104                                 break;
 105                         }
 106
 107                         break;
 108                 }
 109                 case BN_DEFFILE:
 110                         if (lexrc.next()) {
 111                                 string const tmp(lexrc.getString());
 112                                 error |= !read(tmp);
 113                         } else {
 114                                 lexrc.printError("BN_DEFFILE: Missing file name");
 115                                 error = true;
 116                                 break;
 117
 118                         }
 119                         break;
 120                 }
 121         }
 122
 123         if (error)
 124                 lyxerr << "CmdDef::read: error while reading def file:"
 125                        << tmp << endl;
 126         return !error;
 127 }
 128
 129
 130 bool CmdDef::lock(string const & name, FuncRequest & func)
 131 {
 132         if (cmdDefMap.empty()) {
 133                 func = FuncRequest::unknown;
 134                 return false;
 135         }
 136
 137         string const name2 = trim(name);
 138
 139         if (lockSet.find(name2) != lockSet.end()) {
 140                 func = FuncRequest::noaction;
 141                 return false;
 142         }
 143
 144         CmdDefMap::const_iterator pos = cmdDefMap.find(name2);
 145
 146         if (pos == cmdDefMap.end()) {
 147                 func = FuncRequest::unknown;
 148                 return false;
 149         }
 150
 151         lockSet.insert(name2);
 152         func = pos->second;
 153         return true;
 154 }
 155
 156
 157 void CmdDef::release(string const & name)
 158 {
 159         string const name2 = trim(name);
 160
 161         lockSet.erase(name2);
 162 }
 163
 164 CmdDef::newCmdDefResult CmdDef::newCmdDef(string const & name,
 165                                                                                   string const & def)
 166 {
 167         string const name2 = trim(name);
 168
 169         if (name2.empty())
 170                 return CmdDefNameEmpty;
 171
 172         if (cmdDefMap.find(name) != cmdDefMap.end())
 173                 return CmdDefExists;
 174
 175         FuncRequest     func = lyxaction.lookupFunc(def);
 176         if (func.action == LFUN_NOACTION ||
 177                 func.action == LFUN_UNKNOWN_ACTION) {
 178                         return CmdDefInvalid;
 179         }
 180
 181         cmdDefMap[name2] = func;
 182
 183         return CmdDefOk;
 184 }
 185
 186
 187 } // namespace lyx