src/lastfiles.C

   1 /* This file is part of
   2 * ======================================================
   3 *
   4 *           LyX, The Document Processor
   5 *
   6 *           Copyright (C) 1995 Matthias Ettrich
   7 *           Copyright (C) 1995-1998 The LyX Team.
   8 *
   9 *======================================================*/
  10
  11 #include <config.h>
  12
  13
  14 #ifdef __GNUG__
  15 #pragma implementation
  16 #endif
  17
  18 //#include "definitions.h"
  19 #include "lyxlex.h"
  20 #include "FileInfo.h"
  21 #include "lastfiles.h"
  22 #include "filetools.h"
  23 #include "error.h"
  24
  25 //      $Id: lastfiles.C,v 1.1 1999/09/27 18:44:37 larsbj Exp $
  26
  27 #if !defined(lint) && !defined(WITH_WARNINGS)
  28 static char vcid[] = "$Id: lastfiles.C,v 1.1 1999/09/27 18:44:37 larsbj Exp $";
  29 #endif /* lint */
  30
  31 LastFiles::LastFiles(LString const & filename, bool st, char num)
  32         : dostat(st)
  33 {
  34         setNumberOfFiles(num);
  35         files = new LString[num_files];
  36         readFile(filename);
  37 }
  38
  39
  40 LastFiles::~LastFiles()
  41 {
  42         delete[] files;
  43 }
  44
  45
  46 void LastFiles::setNumberOfFiles(char no)
  47 {
  48         if (1 <= no && no <= ABSOLUTEMAXLASTFILES)
  49                 num_files = no;
  50         else {
  51                 lyxerr.print(LString("LyX: lastfiles: too many files\n"
  52                         "\tdefault (=") + int(DEFAULTFILES) + ") used.");
  53                 num_files = DEFAULTFILES;
  54         }
  55 }
  56
  57
  58 void LastFiles::readFile(LString const & filename)
  59 {
  60         // we will not complain if we can't find filename nor will
  61         // we issue a warning. Lgb.
  62         LyXLex lex(NULL, 0); /* LyXLex should be changed
  63                               * to allow constructor with
  64                               * no parameters. */
  65         bool error = false;
  66
  67         lex.setFile(filename);
  68
  69         if (!lex.IsOK()) return;
  70
  71         LString tmp;
  72         FileInfo fileInfo;
  73         int i = 0;
  74
  75         while (lex.IsOK() && !error && i < num_files) {
  76                 switch(lex.lex()) {
  77                 case LyXLex::LEX_FEOF:
  78                         error = true;
  79                         break;
  80                 default:
  81                         tmp = lex.GetString();
  82                         // Check if the file exist
  83                         if (dostat) {
  84                                 if (!(fileInfo.newFile(tmp).exist() &&
  85                                       fileInfo.isRegular()))
  86                                         break; // the file does not exist
  87                         }
  88                         files[i] = tmp;
  89                         i++;
  90                         break;
  91                 }
  92         }
  93 }
  94
  95
  96 void LastFiles::writeFile(LString const & filename) const
  97 {
  98         FilePtr fd(filename, FilePtr::write);
  99         if (fd()) {
 100                 for (int i = 0; i < num_files; i++) {
 101                         if (!files[i].empty())
 102                                 fprintf(fd, "\"%s\"\n", files[i].c_str());
 103                 }
 104         } else
 105                 lyxerr.print("LyX: Warning: unable to save LastFiles: "
 106                               + filename);
 107 }
 108
 109
 110 void LastFiles::newFile(LString const & file)
 111 {
 112         int n;
 113         // Find this file in list. If not in list, point to last entry
 114         for(n = 0; n < (num_files - 1); n++)
 115                 if(files[n] == file) break;
 116
 117         for(int i = n; i >= 1; i--)
 118                 files[i] = files[i - 1];
 119         files[0] = file;
 120 }