src/session.C

   1 /**
   2  * \file session.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 Bo Peng
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "session.h"
  15 #include "debug.h"
  16 #include "support/package.h"
  17 #include "support/filetools.h"
  18
  19 #include <boost/filesystem/operations.hpp>
  20
  21 #include <fstream>
  22 #include <sstream>
  23 #include <algorithm>
  24 #include <iterator>
  25
  26 using lyx::support::absolutePath;
  27 using lyx::support::addName;
  28 using lyx::support::FileName;
  29 using lyx::support::package;
  30
  31 namespace fs = boost::filesystem;
  32
  33 using std::vector;
  34 using std::getline;
  35 using std::string;
  36 using std::ifstream;
  37 using std::ofstream;
  38 using std::istream;
  39 using std::ostream;
  40 using std::endl;
  41 using std::istringstream;
  42 using std::copy;
  43 using std::find;
  44 using std::ostream_iterator;
  45
  46 namespace {
  47
  48 string const sec_lastfiles = "[recent files]";
  49 string const sec_lastfilepos = "[cursor positions]";
  50 string const sec_lastopened = "[last opened files]";
  51 string const sec_bookmarks = "[bookmarks]";
  52 string const sec_session = "[session info]";
  53 string const sec_toolbars = "[toolbars]";
  54
  55 } // anon namespace
  56
  57
  58 namespace lyx {
  59
  60 LastFilesSection::LastFilesSection(unsigned int num) :
  61         default_num_last_files(4),
  62         absolute_max_last_files(100)
  63 {
  64         setNumberOfLastFiles(num);
  65 }
  66
  67
  68 void LastFilesSection::read(istream & is)
  69 {
  70         string tmp;
  71         do {
  72                 char c = is.peek();
  73                 if (c == '[')
  74                         break;
  75                 getline(is, tmp);
  76                 if (tmp == "" || tmp[0] == '#' || tmp[0] == ' ' || !absolutePath(tmp))
  77                         continue;
  78
  79                 // read lastfiles
  80                 FileName const file(tmp);
  81                 if (fs::exists(file.toFilesystemEncoding()) &&
  82                     !fs::is_directory(file.toFilesystemEncoding()) &&
  83                     lastfiles.size() < num_lastfiles)
  84                         lastfiles.push_back(file);
  85                 else
  86                         LYXERR(Debug::INIT) << "LyX: Warning: Ignore last file: " << tmp << endl;
  87         } while (is.good());
  88 }
  89
  90
  91 void LastFilesSection::write(ostream & os) const
  92 {
  93         os << '\n' << sec_lastfiles << '\n';
  94         copy(lastfiles.begin(), lastfiles.end(),
  95              ostream_iterator<FileName>(os, "\n"));
  96 }
  97
  98
  99 void LastFilesSection::add(FileName const & file)
 100 {
 101         // If file already exist, delete it and reinsert at front.
 102         LastFiles::iterator it = find(lastfiles.begin(), lastfiles.end(), file);
 103         if (it != lastfiles.end())
 104                 lastfiles.erase(it);
 105         lastfiles.push_front(file);
 106         if (lastfiles.size() > num_lastfiles)
 107                 lastfiles.pop_back();
 108 }
 109
 110
 111 void LastFilesSection::setNumberOfLastFiles(unsigned int no)
 112 {
 113         if (0 < no && no <= absolute_max_last_files)
 114                 num_lastfiles = no;
 115         else {
 116                 LYXERR(Debug::INIT) << "LyX: session: too many last files\n"
 117                        << "\tdefault (=" << default_num_last_files
 118                        << ") used." << endl;
 119                 num_lastfiles = default_num_last_files;
 120         }
 121 }
 122
 123
 124 void LastOpenedSection::read(istream & is)
 125 {
 126         string tmp;
 127         do {
 128                 char c = is.peek();
 129                 if (c == '[')
 130                         break;
 131                 getline(is, tmp);
 132                 if (tmp == "" || tmp[0] == '#' || tmp[0] == ' ' || !absolutePath(tmp))
 133                         continue;
 134
 135                 FileName const file(tmp);
 136                 if (fs::exists(file.toFilesystemEncoding()) &&
 137                     !fs::is_directory(file.toFilesystemEncoding()))
 138                         lastopened.push_back(file);
 139                 else
 140                         LYXERR(Debug::INIT) << "LyX: Warning: Ignore last opened file: " << tmp << endl;
 141         } while (is.good());
 142 }
 143
 144
 145 void LastOpenedSection::write(ostream & os) const
 146 {
 147         os << '\n' << sec_lastopened << '\n';
 148         copy(lastopened.begin(), lastopened.end(),
 149              ostream_iterator<FileName>(os, "\n"));
 150 }
 151
 152
 153 void LastOpenedSection::add(FileName const & file)
 154 {
 155         lastopened.push_back(file);
 156 }
 157
 158
 159 void LastOpenedSection::clear()
 160 {
 161         lastopened.clear();
 162 }
 163
 164
 165 void LastFilePosSection::read(istream & is)
 166 {
 167         string tmp;
 168         do {
 169                 char c = is.peek();
 170                 if (c == '[')
 171                         break;
 172                 getline(is, tmp);
 173                 if (tmp == "" || tmp[0] == '#' || tmp[0] == ' ')
 174                         continue;
 175
 176                 try {
 177                         // read lastfilepos
 178                         // pos, file\n
 179                         pit_type pit;
 180                         pos_type pos;
 181                         string fname;
 182                         istringstream itmp(tmp);
 183                         itmp >> pit;
 184                         itmp.ignore(2);  // ignore ", "
 185                         itmp >> pos;
 186                         itmp.ignore(2);  // ignore ", "
 187                         getline(itmp, fname);
 188                         if (!absolutePath(fname))
 189                                 continue;
 190                         FileName const file(fname);
 191                         if (fs::exists(file.toFilesystemEncoding()) &&
 192                             !fs::is_directory(file.toFilesystemEncoding()) &&
 193                             lastfilepos.size() < num_lastfilepos)
 194                                 lastfilepos[file] = boost::tie(pit, pos);
 195                         else
 196                                 LYXERR(Debug::INIT) << "LyX: Warning: Ignore pos of last file: " << fname << endl;
 197                 } catch (...) {
 198                         LYXERR(Debug::INIT) << "LyX: Warning: unknown pos of last file: " << tmp << endl;
 199                 }
 200         } while (is.good());
 201 }
 202
 203
 204 void LastFilePosSection::write(ostream & os) const
 205 {
 206         os << '\n' << sec_lastfilepos << '\n';
 207         for (FilePosMap::const_iterator file = lastfilepos.begin();
 208                 file != lastfilepos.end(); ++file) {
 209                 os << file->second.get<0>() << ", "
 210                     << file->second.get<1>() << ", "
 211                     << file->first << '\n';
 212         }
 213 }
 214
 215
 216 void LastFilePosSection::save(FileName const & fname, FilePos pos)
 217 {
 218         lastfilepos[fname] = pos;
 219 }
 220
 221
 222 LastFilePosSection::FilePos LastFilePosSection::load(FileName const & fname) const
 223 {
 224         FilePosMap::const_iterator entry = lastfilepos.find(fname);
 225         // Has position information, return it.
 226         if (entry != lastfilepos.end())
 227                 return entry->second;
 228         // Not found, return the first paragraph
 229         else
 230                 return 0;
 231 }
 232
 233
 234 void BookmarksSection::clear()
 235 {
 236         // keep bookmark[0], the temporary one
 237         bookmarks.resize(1);
 238         bookmarks.resize(max_bookmarks + 1);
 239 }
 240
 241
 242 void BookmarksSection::read(istream & is)
 243 {
 244         string tmp;
 245         do {
 246                 char c = is.peek();
 247                 if (c == '[')
 248                         break;
 249                 getline(is, tmp);
 250                 if (tmp == "" || tmp[0] == '#' || tmp[0] == ' ')
 251                         continue;
 252
 253                 try {
 254                         // read bookmarks
 255                         // idx, pit, pos, file\n
 256                         unsigned int idx;
 257                         pit_type pit;
 258                         pos_type pos;
 259                         string fname;
 260                         istringstream itmp(tmp);
 261                         itmp >> idx;
 262                         itmp.ignore(2);  // ignore ", "
 263                         itmp >> pit;
 264                         itmp.ignore(2);  // ignore ", "
 265                         itmp >> pos;
 266                         itmp.ignore(2);  // ignore ", "
 267                         getline(itmp, fname);
 268                         if (!absolutePath(fname))
 269                                 continue;
 270                         FileName const file(fname);
 271                         // only load valid bookmarks
 272                         if (fs::exists(file.toFilesystemEncoding()) &&
 273                             !fs::is_directory(file.toFilesystemEncoding()) &&
 274                             idx <= max_bookmarks)
 275                                 bookmarks[idx] = Bookmark(file, pit, 0, pos);
 276                         else
 277                                 LYXERR(Debug::INIT) << "LyX: Warning: Ignore bookmark of file: " << fname << endl;
 278                 } catch (...) {
 279                         LYXERR(Debug::INIT) << "LyX: Warning: unknown Bookmark info: " << tmp << endl;
 280                 }
 281         } while (is.good());
 282 }
 283
 284
 285 void BookmarksSection::write(ostream & os) const
 286 {
 287         os << '\n' << sec_bookmarks << '\n';
 288         for (size_t i = 1; i <= max_bookmarks; ++i) {
 289                 if (isValid(i))
 290                         os << i << ", "
 291                            << bookmarks[i].par_pit << ", "
 292                            << bookmarks[i].par_pos << ", "
 293                            << bookmarks[i].filename << '\n';
 294         }
 295 }
 296
 297
 298 void BookmarksSection::save(FileName const & fname, pit_type par_pit, int par_id, pos_type par_pos, unsigned int idx)
 299 {
 300         // silently ignore bookmarks when idx is out of range
 301         if (idx <= max_bookmarks)
 302                 bookmarks[idx] = Bookmark(fname, par_pit, par_id, par_pos);
 303 }
 304
 305
 306 bool BookmarksSection::isValid(unsigned int i) const
 307 {
 308         return i <= max_bookmarks && !bookmarks[i].filename.empty();
 309 }
 310
 311
 312 BookmarksSection::Bookmark const & BookmarksSection::bookmark(unsigned int i) const
 313 {
 314         return bookmarks[i];
 315 }
 316
 317
 318 void ToolbarSection::read(istream & is)
 319 {
 320         string tmp;
 321         do {
 322                 char c = is.peek();
 323                 if (c == '[')
 324                         break;
 325                 getline(is, tmp);
 326                 if (tmp == "" || tmp[0] == '#' || tmp[0] == ' ')
 327                         continue;
 328
 329                 try {
 330                         // Read session info, saved as key/value pairs
 331                         // would better yell if pos returns npos
 332                         string::size_type pos = tmp.find_first_of(" = ");
 333                         // silently ignore lines without " = "
 334                         if (pos != string::npos) {
 335                                 string key = tmp.substr(0, pos);
 336                                 int state;
 337                                 int location;
 338                                 int posx;
 339                                 int posy;
 340                                 istringstream value(tmp.substr(pos + 3));
 341                                 value >> state;
 342                                 value >> location;
 343                                 value >> posx;
 344                                 value >> posy;
 345                                 toolbars.push_back(boost::make_tuple(key, ToolbarInfo(state, location, posx, posy)));
 346                         } else
 347                                 LYXERR(Debug::INIT) << "LyX: Warning: Ignore toolbar info: " << tmp << endl;
 348                 } catch (...) {
 349                         LYXERR(Debug::INIT) << "LyX: Warning: unknown Toolbar info: " << tmp << endl;
 350                 }
 351         } while (is.good());
 352         // sort the toolbars by location, line and position
 353         std::sort(toolbars.begin(), toolbars.end());
 354 }
 355
 356
 357 void ToolbarSection::write(ostream & os) const
 358 {
 359         os << '\n' << sec_toolbars << '\n';
 360         for (ToolbarList::const_iterator tb = toolbars.begin();
 361                 tb != toolbars.end(); ++tb) {
 362                 os << tb->get<0>() << " = "
 363                   << static_cast<int>(tb->get<1>().state) << " "
 364                   << static_cast<int>(tb->get<1>().location) << " "
 365                   << tb->get<1>().posx << " "
 366                   << tb->get<1>().posy << '\n';
 367         }
 368 }
 369
 370
 371 ToolbarSection::ToolbarInfo & ToolbarSection::load(string const & name)
 372 {
 373         for (ToolbarList::iterator tb = toolbars.begin();
 374                 tb != toolbars.end(); ++tb)
 375                 if (tb->get<0>() == name)
 376                         return tb->get<1>();
 377         // add a new item
 378         toolbars.push_back(boost::make_tuple(name, ToolbarSection::ToolbarInfo()));
 379         return toolbars.back().get<1>();
 380 }
 381
 382
 383 bool operator<(ToolbarSection::ToolbarItem const & a, ToolbarSection::ToolbarItem const & b)
 384 {
 385         ToolbarSection::ToolbarInfo lhs = a.get<1>();
 386         ToolbarSection::ToolbarInfo rhs = b.get<1>();
 387         // on if before off
 388         if (lhs.state != rhs.state)
 389                 return static_cast<int>(lhs.state) < static_cast<int>(rhs.state);
 390         // order of dock does not really matter
 391         if (lhs.location != rhs.location)
 392                 return static_cast<int>(lhs.location) < static_cast<int>(rhs.location);
 393         // if the same dock, the order depends on position
 394         if (lhs.location == ToolbarSection::ToolbarInfo::TOP ||
 395                 lhs.location == ToolbarSection::ToolbarInfo::BOTTOM)
 396                 return lhs.posy < rhs.posy || (lhs.posy == rhs.posy && lhs.posx < rhs.posx);
 397         else if (lhs.location == ToolbarSection::ToolbarInfo::LEFT ||
 398                 lhs.location == ToolbarSection::ToolbarInfo::RIGHT)
 399                 return lhs.posx < rhs.posx || (lhs.posx == rhs.posx && lhs.posy < rhs.posy);
 400         else
 401                 return true;
 402 }
 403
 404
 405 void SessionInfoSection::read(istream & is)
 406 {
 407         string tmp;
 408         do {
 409                 char c = is.peek();
 410                 if (c == '[')
 411                         break;
 412                 getline(is, tmp);
 413                 if (tmp == "" || tmp[0] == '#' || tmp[0] == ' ')
 414                         continue;
 415
 416                 try {
 417                         // Read session info, saved as key/value pairs
 418                         // would better yell if pos returns npos
 419                         string::size_type pos = tmp.find_first_of(" = ");
 420                         // silently ignore lines without " = "
 421                         if (pos != string::npos) {
 422                                 string key = tmp.substr(0, pos);
 423                                 string value = tmp.substr(pos + 3);
 424                                 sessioninfo[key] = value;
 425                         } else
 426                                 LYXERR(Debug::INIT) << "LyX: Warning: Ignore session info: " << tmp << endl;
 427                 } catch (...) {
 428                         LYXERR(Debug::INIT) << "LyX: Warning: unknown Session info: " << tmp << endl;
 429                 }
 430         } while (is.good());
 431 }
 432
 433
 434 void SessionInfoSection::write(ostream & os) const
 435 {
 436         os << '\n' << sec_session << '\n';
 437         for (MiscInfo::const_iterator val = sessioninfo.begin();
 438                 val != sessioninfo.end(); ++val) {
 439                 os << val->first << " = " << val->second << '\n';
 440         }
 441 }
 442
 443
 444 void SessionInfoSection::save(string const & key, string const & value)
 445 {
 446         sessioninfo[key] = value;
 447 }
 448
 449
 450 string const SessionInfoSection::load(string const & key, bool release)
 451 {
 452         MiscInfo::const_iterator pos = sessioninfo.find(key);
 453         string value;
 454         if (pos != sessioninfo.end())
 455                 value = pos->second;
 456         if (release)
 457                 sessioninfo.erase(key);
 458         return value;
 459 }
 460
 461
 462 Session::Session(unsigned int num) :
 463         last_files(num)
 464 {
 465         // locate the session file
 466         // note that the session file name 'session' is hard-coded
 467         session_file = FileName(addName(package().user_support().absFilename(), "session"));
 468         //
 469         readFile();
 470 }
 471
 472
 473 void Session::readFile()
 474 {
 475         // we will not complain if we can't find session_file nor will
 476         // we issue a warning. (Lgb)
 477         ifstream is(session_file.toFilesystemEncoding().c_str());
 478         string tmp;
 479
 480         while (getline(is, tmp)) {
 481                 // Ignore comments, empty line or line stats with ' '
 482                 if (tmp == "" || tmp[0] == '#' || tmp[0] == ' ')
 483                         continue;
 484
 485                 // Determine section id
 486                 if (tmp == sec_lastfiles)
 487                         lastFiles().read(is);
 488                 else if (tmp == sec_lastopened)
 489                         lastOpened().read(is);
 490                 else if (tmp == sec_lastfilepos)
 491                         lastFilePos().read(is);
 492                 else if (tmp == sec_bookmarks)
 493                         bookmarks().read(is);
 494                 else if (tmp == sec_toolbars)
 495                         toolbars().read(is);
 496                 else if (tmp == sec_session)
 497                         sessionInfo().read(is);
 498                 else
 499                         LYXERR(Debug::INIT) << "LyX: Warning: unknown Session section: " << tmp << endl;
 500         }
 501 }
 502
 503
 504 void Session::writeFile() const
 505 {
 506         ofstream os(session_file.toFilesystemEncoding().c_str());
 507         if (os) {
 508                 os << "## Automatically generated lyx session file \n"
 509                     << "## Editing this file manually may cause lyx to crash.\n";
 510
 511                 lastFiles().write(os);
 512                 lastOpened().write(os);
 513                 lastFilePos().write(os);
 514                 bookmarks().write(os);
 515                 toolbars().write(os);
 516                 sessionInfo().write(os);
 517         } else
 518                 LYXERR(Debug::INIT) << "LyX: Warning: unable to save Session: "
 519                        << session_file << endl;
 520 }
 521
 522 }