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