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 <string>
  24
  25 using namespace std;
  26 using namespace lyx::support;
  27
  28 namespace lyx {
  29
  30 bool CmdDef::read(string const & def_file)
  31 {
  32         enum {
  33                 BN_DEFFILE,
  34                 BN_DEFINE
  35         };
  36
  37         LexerKeyword cmdDefTags[] = {
  38                 { "\\def_file", BN_DEFFILE },
  39                 { "\\define", BN_DEFINE }
  40         };
  41
  42         Lexer lex(cmdDefTags);
  43         FileName const tmp(i18nLibFileSearch("commands", def_file, "def"));
  44         lex.setContext("CmdDef::read");
  45         lex.setFile(tmp);
  46         if (!lex.isOK()) {
  47                 LYXERR0( "CmdDef::read: cannot open def file:" << tmp);
  48                 return false;
  49         }
  50
  51         bool error = false;
  52         while (lex.isOK()) {
  53                 switch (lex.lex()) {
  54                 case Lexer::LEX_UNDEF:
  55                         lex.printError("Unknown tag");
  56                         error = true;
  57                         continue;
  58                 case Lexer::LEX_FEOF:
  59                         continue;
  60                 case BN_DEFINE:
  61                 {
  62                         string name, def;
  63
  64                         if (lex.next()) {
  65                                 name = lex.getString();
  66                         } else {
  67                                 lex.printError("BN_DEFINE: Missing command name");
  68                                 error = true;
  69                                 break;
  70                         }
  71
  72                         if (lex.next(true)) {
  73                                 def = lex.getString();
  74                         } else {
  75                                 lex.printError("BN_DEFINE: missing command definition");
  76                                 error = true;
  77                                 break;
  78                         }
  79
  80                         newCmdDefResult e = newCmdDef(name, def);
  81                         switch (e) {
  82                         case CmdDefNameEmpty:
  83                                 lex.printError("BN_DEFINE: Command name is empty");
  84                                 error = true;
  85                                 break;
  86                         case CmdDefExists:
  87                                 lex.printError("BN_DEFINE: Command `" + name + "' already defined");
  88                                 error = true;
  89                                 break;
  90                         case CmdDefInvalid:
  91                                 lex.printError("BN_DEFINE: Command definition for `" + name + "' is not valid");
  92                                 error = true;
  93                                 break;
  94                         case CmdDefOk:
  95                                 break;
  96                         }
  97
  98                         break;
  99                 }
 100                 case BN_DEFFILE:
 101                         if (lex.next()) {
 102                                 string const tmp = lex.getString();
 103                                 error |= !read(tmp);
 104                         } else {
 105                                 lex.printError("BN_DEFFILE: Missing file name");
 106                                 error = true;
 107                                 break;
 108
 109                         }
 110                         break;
 111                 }
 112         }
 113
 114         if (error)
 115                 LYXERR0("CmdDef::read: error while reading def file:" << tmp);
 116         return !error;
 117 }
 118
 119
 120 bool CmdDef::lock(string const & name, FuncRequest & func)
 121 {
 122         if (cmdDefMap.empty()) {
 123                 func = FuncRequest::unknown;
 124                 return false;
 125         }
 126
 127         string const name2 = trim(name);
 128
 129         if (lockSet.find(name2) != lockSet.end()) {
 130                 func = FuncRequest::noaction;
 131                 return false;
 132         }
 133
 134         CmdDefMap::const_iterator pos = cmdDefMap.find(name2);
 135
 136         if (pos == cmdDefMap.end()) {
 137                 func = FuncRequest::unknown;
 138                 return false;
 139         }
 140
 141         lockSet.insert(name2);
 142         func = pos->second;
 143         return true;
 144 }
 145
 146
 147 void CmdDef::release(string const & name)
 148 {
 149         string const name2 = trim(name);
 150         lockSet.erase(name2);
 151 }
 152
 153
 154 CmdDef::newCmdDefResult CmdDef::newCmdDef(string const & name,
 155                                           string const & def)
 156 {
 157         string const name2 = trim(name);
 158
 159         if (name2.empty())
 160                 return CmdDefNameEmpty;
 161
 162         if (cmdDefMap.find(name) != cmdDefMap.end())
 163                 return CmdDefExists;
 164
 165         FuncRequest     func = lyxaction.lookupFunc(def);
 166         if (func.action() == LFUN_NOACTION
 167                 || func.action() == LFUN_UNKNOWN_ACTION) {
 168                         return CmdDefInvalid;
 169         }
 170
 171         cmdDefMap[name2] = func;
 172
 173         return CmdDefOk;
 174 }
 175
 176
 177 } // namespace lyx