src/buffer_funcs.cpp

   1 /**
   2  * \file buffer_funcs.cpp
   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 Alfredo Braunstein
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  *
  11  */
  12
  13 #include <config.h>
  14
  15 #include "buffer_funcs.h"
  16 #include "Buffer.h"
  17 #include "BufferList.h"
  18 #include "BufferParams.h"
  19 #include "DocIterator.h"
  20 #include "Counters.h"
  21 #include "ErrorList.h"
  22 #include "Floating.h"
  23 #include "FloatList.h"
  24 #include "InsetList.h"
  25 #include "Language.h"
  26 #include "LaTeX.h"
  27 #include "Layout.h"
  28 #include "LyX.h"
  29 #include "TextClass.h"
  30 #include "Paragraph.h"
  31 #include "ParagraphList.h"
  32 #include "ParagraphParameters.h"
  33 #include "ParIterator.h"
  34 #include "TexRow.h"
  35 #include "Text.h"
  36 #include "TocBackend.h"
  37
  38 #include "frontends/alert.h"
  39
  40 #include "insets/InsetBibitem.h"
  41 #include "insets/InsetInclude.h"
  42
  43 #include "support/lassert.h"
  44 #include "support/convert.h"
  45 #include "support/debug.h"
  46 #include "support/filetools.h"
  47 #include "support/gettext.h"
  48 #include "support/lstrings.h"
  49 #include "support/textutils.h"
  50
  51 using namespace std;
  52 using namespace lyx::support;
  53
  54 namespace lyx {
  55
  56 namespace Alert = frontend::Alert;
  57
  58
  59 Buffer * checkAndLoadLyXFile(FileName const & filename, bool const acceptDirty)
  60 {
  61         // File already open?
  62         Buffer * checkBuffer = theBufferList().getBuffer(filename);
  63         if (checkBuffer) {
  64                 // sometimes (when setting the master buffer from a child)
  65                 // we accept a dirty buffer right away (otherwise we'd get
  66                 // an infinite loop (bug 5514)
  67                 if (checkBuffer->isClean() || acceptDirty)
  68                         return checkBuffer;
  69                 docstring const file = makeDisplayPath(filename.absFilename(), 20);
  70                 docstring text = bformat(_(
  71                                 "The document %1$s is already loaded and has unsaved changes.\n"
  72                                 "Do you want to abandon your changes and reload the version on disk?"), file);
  73                 if (Alert::prompt(_("Reload saved document?"),
  74                                 text, 0, 1,  _("&Reload"), _("&Keep Changes")))
  75                         return checkBuffer;
  76
  77                 // FIXME: should be LFUN_REVERT
  78                 theBufferList().release(checkBuffer);
  79                 // Load it again.
  80                 return checkAndLoadLyXFile(filename);
  81         }
  82
  83         if (filename.exists()) {
  84                 if (!filename.isReadableFile()) {
  85                         docstring text = bformat(_("The file %1$s exists but is not "
  86                                 "readable by the current user."),
  87                                 from_utf8(filename.absFilename()));
  88                         Alert::error(_("File not readable!"), text);
  89                         return 0;
  90                 }
  91                 Buffer * b = theBufferList().newBuffer(filename.absFilename());
  92                 if (!b) {
  93                         // Buffer creation is not possible.
  94                         return 0;
  95                 }
  96                 if (!b->loadLyXFile(filename)) {
  97                         theBufferList().release(b);
  98                         return 0;
  99                 }
 100                 return b;
 101         }
 102
 103         docstring text = bformat(_("The document %1$s does not yet "
 104                 "exist.\n\nDo you want to create a new document?"),
 105                 from_utf8(filename.absFilename()));
 106         if (!Alert::prompt(_("Create new document?"),
 107                         text, 0, 1, _("&Create"), _("Cancel")))
 108                 return newFile(filename.absFilename(), string(), true);
 109
 110         return 0;
 111 }
 112
 113
 114 // FIXME newFile() should probably be a member method of Application...
 115 Buffer * newFile(string const & filename, string const & templatename,
 116                  bool const isNamed)
 117 {
 118         // get a free buffer
 119         Buffer * b = theBufferList().newBuffer(filename);
 120         if (!b)
 121                 // Buffer creation is not possible.
 122                 return 0;
 123
 124         FileName tname;
 125         // use defaults.lyx as a default template if it exists.
 126         if (templatename.empty())
 127                 tname = libFileSearch("templates", "defaults.lyx");
 128         else
 129                 tname = makeAbsPath(templatename);
 130
 131         if (!tname.empty()) {
 132                 if (!b->readFile(tname)) {
 133                         docstring const file = makeDisplayPath(tname.absFilename(), 50);
 134                         docstring const text  = bformat(
 135                                 _("The specified document template\n%1$s\ncould not be read."),
 136                                 file);
 137                         Alert::error(_("Could not read template"), text);
 138                         theBufferList().release(b);
 139                         return 0;
 140                 }
 141         }
 142
 143         if (!isNamed) {
 144                 b->setUnnamed();
 145                 b->setFileName(filename);
 146         }
 147
 148         b->setReadonly(false);
 149         b->setFullyLoaded(true);
 150
 151         return b;
 152 }
 153
 154
 155 Buffer * newUnnamedFile(FileName const & path, string const & prefix,
 156                                                 string const & templatename)
 157 {
 158         static map<string, int> file_number;
 159
 160         FileName filename;
 161
 162         do {
 163                 filename.set(path,
 164                         prefix + convert<string>(++file_number[prefix]) + ".lyx");
 165         }
 166         while (theBufferList().exists(filename) || filename.isReadableFile());
 167
 168         return newFile(filename.absFilename(), templatename, false);
 169 }
 170
 171
 172 /*
 173  * FIXME : merge with countChars. The structures of the two functions
 174  * are similar but, unfortunately, they seem to have a different
 175  * notion of what to count. Since nobody ever complained about that,
 176  * this proves (again) that any number beats no number ! (JMarc)
 177  */
 178 int countWords(DocIterator const & from, DocIterator const & to)
 179 {
 180         int count = 0;
 181         bool inword = false;
 182         for (DocIterator dit = from ; dit != to ; ) {
 183                 if (!dit.inTexted()) {
 184                         dit.forwardPos();
 185                         continue;
 186                 }
 187
 188                 Paragraph const & par = dit.paragraph();
 189                 pos_type const pos = dit.pos();
 190
 191                 // Copied and adapted from isWordSeparator() in Paragraph
 192                 if (pos != dit.lastpos() && !par.isDeleted(pos)) {
 193                         Inset const * ins = par.getInset(pos);
 194                         if (ins && !ins->producesOutput()) {
 195                                 //skip this inset
 196                                 ++dit.top().pos();
 197                                 continue;
 198                         }
 199                         if (par.isWordSeparator(pos))
 200                                 inword = false;
 201                         else if (!inword) {
 202                                 ++count;
 203                                 inword = true;
 204                         }
 205                 }
 206                 dit.forwardPos();
 207         }
 208
 209         return count;
 210 }
 211
 212
 213 int countChars(DocIterator const & from, DocIterator const & to,
 214                bool with_blanks)
 215 {
 216         int chars = 0;
 217         int blanks = 0;
 218         for (DocIterator dit = from ; dit != to ; ) {
 219                 if (!dit.inTexted()) {
 220                         dit.forwardPos();
 221                         continue;
 222                 }
 223
 224                 Paragraph const & par = dit.paragraph();
 225                 pos_type const pos = dit.pos();
 226
 227                 if (pos != dit.lastpos() && !par.isDeleted(pos)) {
 228                         if (Inset const * ins = par.getInset(pos)) {
 229                                 if (!ins->producesOutput()) {
 230                                         //skip this inset
 231                                         ++dit.top().pos();
 232                                         continue;
 233                                 }
 234                                 if (ins->isLetter())
 235                                         ++chars;
 236                                 else if (with_blanks && ins->isSpace())
 237                                         ++blanks;
 238                         } else {
 239                                 char_type const c = par.getChar(pos);
 240                                 if (isPrintableNonspace(c))
 241                                         ++chars;
 242                                 else if (isSpace(c) && with_blanks)
 243                                         ++blanks;
 244                         }
 245                 }
 246                 dit.forwardPos();
 247         }
 248
 249         return chars + blanks;
 250 }
 251
 252
 253 Buffer * loadIfNeeded(FileName const & fname)
 254 {
 255         Buffer * buffer = theBufferList().getBuffer(fname);
 256         if (!buffer) {
 257                 if (!fname.exists())
 258                         return 0;
 259
 260                 buffer = theBufferList().newBuffer(fname.absFilename());
 261                 if (!buffer)
 262                         // Buffer creation is not possible.
 263                         return 0;
 264
 265                 if (!buffer->loadLyXFile(fname)) {
 266                         //close the buffer we just opened
 267                         theBufferList().release(buffer);
 268                         return 0;
 269                 }
 270         }
 271         return buffer;
 272 }
 273
 274
 275 } // namespace lyx