src/bufferlist.C

   1 /**
   2  * \file bufferlist.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  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "bufferlist.h"
  14
  15 #include "author.h"
  16 #include "buffer.h"
  17 #include "bufferparams.h"
  18 #include "debug.h"
  19 #include "gettext.h"
  20 #include "session.h"
  21 #include "lyx_cb.h"
  22 #include "lyx_main.h"
  23 #include "output_latex.h"
  24 #include "paragraph.h"
  25 #include "ParagraphList.h"
  26
  27 #include "frontends/Alert.h"
  28
  29 #include "support/filetools.h"
  30 #include "support/package.h"
  31
  32 #include <boost/bind.hpp>
  33
  34 #include <algorithm>
  35 #include <functional>
  36
  37 using lyx::support::addName;
  38 using lyx::support::bformat;
  39 using lyx::support::makeAbsPath;
  40 using lyx::support::makeDisplayPath;
  41 using lyx::support::onlyFilename;
  42 using lyx::support::removeAutosaveFile;
  43 using lyx::support::package;
  44 using lyx::support::prefixIs;
  45
  46 using boost::bind;
  47
  48 using std::auto_ptr;
  49 using std::endl;
  50 using std::equal_to;
  51 using std::find;
  52 using std::find_if;
  53 using std::for_each;
  54 using std::string;
  55 using std::vector;
  56 using std::back_inserter;
  57 using std::transform;
  58
  59
  60 BufferList::BufferList()
  61 {}
  62
  63
  64 bool BufferList::empty() const
  65 {
  66         return bstore.empty();
  67 }
  68
  69
  70 bool BufferList::quitWriteBuffer(Buffer * buf)
  71 {
  72         BOOST_ASSERT(buf);
  73
  74         string file;
  75         if (buf->isUnnamed())
  76                 file = onlyFilename(buf->fileName());
  77         else
  78                 file = makeDisplayPath(buf->fileName(), 30);
  79
  80         string const text =
  81                 bformat(_("The document %1$s has unsaved changes.\n\n"
  82                           "Do you want to save the document or discard the changes?"), file);
  83         int const ret = Alert::prompt(_("Save changed document?"),
  84                 text, 0, 2, _("&Save"), _("&Discard"), _("&Cancel"));
  85
  86         if (ret == 0) {
  87                 // FIXME: WriteAs can be asynch !
  88                 // but not right now...maybe we should remove that
  89
  90                 bool succeeded;
  91
  92                 if (buf->isUnnamed())
  93                         succeeded = WriteAs(buf);
  94                 else
  95                         succeeded = MenuWrite(buf);
  96
  97                 if (!succeeded)
  98                         return false;
  99         } else if (ret == 1) {
 100                 // if we crash after this we could
 101                 // have no autosave file but I guess
 102                 // this is really inprobable (Jug)
 103                 if (buf->isUnnamed())
 104                         removeAutosaveFile(buf->fileName());
 105
 106         } else {
 107                 return false;
 108         }
 109
 110         return true;
 111 }
 112
 113
 114 bool BufferList::quitWriteAll()
 115 {
 116         BufferStorage::iterator it = bstore.begin();
 117         BufferStorage::iterator end = bstore.end();
 118         for (; it != end; ++it) {
 119                 if ((*it)->isClean())
 120                         continue;
 121
 122                 if (!quitWriteBuffer(*it))
 123                         return false;
 124         }
 125
 126         return true;
 127 }
 128
 129
 130 void BufferList::release(Buffer * buf)
 131 {
 132         BOOST_ASSERT(buf);
 133         BufferStorage::iterator const it =
 134                 find(bstore.begin(), bstore.end(), buf);
 135         if (it != bstore.end()) {
 136                 Buffer * tmp = (*it);
 137                 BOOST_ASSERT(tmp);
 138                 bstore.erase(it);
 139                 delete tmp;
 140         }
 141 }
 142
 143
 144 Buffer * BufferList::newBuffer(string const & s, bool const ronly)
 145 {
 146         auto_ptr<Buffer> tmpbuf(new Buffer(s, ronly));
 147         tmpbuf->params().useClassDefaults();
 148         lyxerr[Debug::INFO] << "Assigning to buffer "
 149                             << bstore.size() << endl;
 150         bstore.push_back(tmpbuf.get());
 151         return tmpbuf.release();
 152 }
 153
 154
 155 void BufferList::closeAll()
 156 {
 157         while (!bstore.empty()) {
 158                 close(bstore.front(), false);
 159         }
 160 }
 161
 162
 163 bool BufferList::close(Buffer * buf, bool const ask)
 164 {
 165         BOOST_ASSERT(buf);
 166
 167         // FIXME: is the quitting check still necessary ?
 168         if (!ask || buf->isClean() || quitting || buf->paragraphs().empty()) {
 169                 release(buf);
 170                 return true;
 171         }
 172
 173         string fname;
 174         if (buf->isUnnamed())
 175                 fname = onlyFilename(buf->fileName());
 176         else
 177                 fname = makeDisplayPath(buf->fileName(), 30);
 178
 179         string const text =
 180                 bformat(_("The document %1$s has unsaved changes.\n\n"
 181                           "Do you want to save the document or discard the changes?"), fname);
 182         int const ret = Alert::prompt(_("Save changed document?"),
 183                 text, 0, 2, _("&Save"), _("&Discard"), _("&Cancel"));
 184
 185         if (ret == 0) {
 186                 if (buf->isUnnamed()) {
 187                         if (!WriteAs(buf))
 188                                 return false;
 189                 } else if (buf->save()) {
 190                         LyX::ref().session().addLastFile(buf->fileName());
 191                 } else {
 192                         return false;
 193                 }
 194         } else if (ret == 2) {
 195                 return false;
 196         }
 197
 198         if (buf->isUnnamed()) {
 199                 removeAutosaveFile(buf->fileName());
 200         }
 201
 202         release(buf);
 203         return true;
 204 }
 205
 206
 207 vector<string> const BufferList::getFileNames() const
 208 {
 209         vector<string> nvec;
 210         transform(bstore.begin(), bstore.end(),
 211                   back_inserter(nvec),
 212                   boost::bind(&Buffer::fileName, _1));
 213         return nvec;
 214 }
 215
 216
 217 Buffer * BufferList::first()
 218 {
 219         if (bstore.empty())
 220                 return 0;
 221         return bstore.front();
 222 }
 223
 224
 225 Buffer * BufferList::getBuffer(unsigned int const choice)
 226 {
 227         if (choice >= bstore.size())
 228                 return 0;
 229         return bstore[choice];
 230 }
 231
 232
 233 Buffer * BufferList::next(Buffer const * buf) const
 234 {
 235         BOOST_ASSERT(buf);
 236
 237         if (bstore.empty())
 238                 return 0;
 239         BufferStorage::const_iterator it = find(bstore.begin(),
 240                                                 bstore.end(), buf);
 241         BOOST_ASSERT(it != bstore.end());
 242         ++it;
 243         if (it == bstore.end())
 244                 return bstore.front();
 245         else
 246                 return *it;
 247 }
 248
 249
 250 Buffer * BufferList::previous(Buffer const * buf) const
 251 {
 252         BOOST_ASSERT(buf);
 253
 254         if (bstore.empty())
 255                 return 0;
 256         BufferStorage::const_iterator it = find(bstore.begin(),
 257                                                 bstore.end(), buf);
 258         BOOST_ASSERT(it != bstore.end());
 259         if (it == bstore.begin())
 260                 return bstore.back();
 261         else
 262                 return *(it - 1);
 263 }
 264
 265
 266 void BufferList::updateIncludedTeXfiles(string const & mastertmpdir,
 267                                         OutputParams const & runparams)
 268 {
 269         BufferStorage::iterator it = bstore.begin();
 270         BufferStorage::iterator end = bstore.end();
 271         for (; it != end; ++it) {
 272                 if (!(*it)->isDepClean(mastertmpdir)) {
 273                         string writefile = mastertmpdir;
 274                         writefile += '/';
 275                         writefile += (*it)->getLatexName();
 276                         (*it)->makeLaTeXFile(writefile, mastertmpdir,
 277                                              runparams, false);
 278                         (*it)->markDepClean(mastertmpdir);
 279                 }
 280         }
 281 }
 282
 283
 284 void BufferList::emergencyWriteAll()
 285 {
 286         for_each(bstore.begin(), bstore.end(),
 287                  bind(&BufferList::emergencyWrite, this, _1));
 288 }
 289
 290
 291 void BufferList::emergencyWrite(Buffer * buf)
 292 {
 293         // Use ::assert to avoid a loop, BOOST_ASSERT ends up calling ::assert
 294         // compare with 0 to avoid pointer/interger comparison
 295         assert(buf != 0);
 296
 297         // No need to save if the buffer has not changed.
 298         if (buf->isClean())
 299                 return;
 300
 301         string const doc = buf->isUnnamed()
 302                 ? onlyFilename(buf->fileName()) : buf->fileName();
 303
 304         lyxerr << bformat(_("LyX: Attempting to save document %1$s"), doc) << endl;
 305
 306         // We try to save three places:
 307         // 1) Same place as document. Unless it is an unnamed doc.
 308         if (!buf->isUnnamed()) {
 309                 string s = buf->fileName();
 310                 s += ".emergency";
 311                 lyxerr << "  " << s << endl;
 312                 if (buf->writeFile(s)) {
 313                         buf->markClean();
 314                         lyxerr << _("  Save seems successful. Phew.") << endl;
 315                         return;
 316                 } else {
 317                         lyxerr << _("  Save failed! Trying...") << endl;
 318                 }
 319         }
 320
 321         // 2) In HOME directory.
 322         string s = addName(package().home_dir(), buf->fileName());
 323         s += ".emergency";
 324         lyxerr << ' ' << s << endl;
 325         if (buf->writeFile(s)) {
 326                 buf->markClean();
 327                 lyxerr << _("  Save seems successful. Phew.") << endl;
 328                 return;
 329         }
 330
 331         lyxerr << _("  Save failed! Trying...") << endl;
 332
 333         // 3) In "/tmp" directory.
 334         // MakeAbsPath to prepend the current
 335         // drive letter on OS/2
 336         s = addName(package().temp_dir(), buf->fileName());
 337         s += ".emergency";
 338         lyxerr << ' ' << s << endl;
 339         if (buf->writeFile(s)) {
 340                 buf->markClean();
 341                 lyxerr << _("  Save seems successful. Phew.") << endl;
 342                 return;
 343         }
 344         lyxerr << _("  Save failed! Bummer. Document is lost.") << endl;
 345 }
 346
 347
 348 bool BufferList::exists(string const & s) const
 349 {
 350         return find_if(bstore.begin(), bstore.end(),
 351                        bind(equal_to<string>(),
 352                             bind(&Buffer::fileName, _1),
 353                             s))
 354                 != bstore.end();
 355 }
 356
 357
 358 bool BufferList::isLoaded(Buffer const * b) const
 359 {
 360         BOOST_ASSERT(b);
 361         BufferStorage::const_iterator cit =
 362                 find(bstore.begin(), bstore.end(), b);
 363         return cit != bstore.end();
 364 }
 365
 366
 367 Buffer * BufferList::getBuffer(string const & s)
 368 {
 369         BufferStorage::iterator it =
 370                 find_if(bstore.begin(), bstore.end(),
 371                         bind(equal_to<string>(),
 372                              bind(&Buffer::fileName, _1),
 373                              s));
 374
 375         return it != bstore.end() ? (*it) : 0;
 376 }
 377
 378
 379 Buffer * BufferList::getBufferFromTmp(string const & s)
 380 {
 381         BufferStorage::iterator it = bstore.begin();
 382         BufferStorage::iterator end = bstore.end();
 383         for (; it < end; ++it)
 384                 if (prefixIs(s, (*it)->temppath()))
 385                         return *it;
 386         return 0;
 387 }
 388
 389
 390 void BufferList::setCurrentAuthor(string const & name, string const & email)
 391 {
 392         BufferStorage::iterator it = bstore.begin();
 393         BufferStorage::iterator end = bstore.end();
 394         for (; it != end; ++it) {
 395                 (*it)->params().authors().record(0, Author(name, email));
 396         }
 397 }