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)
  61 {
  62         // File already open?
  63         Buffer * checkBuffer = theBufferList().getBuffer(filename);
  64         if (checkBuffer) {
  65                 if (checkBuffer->isClean())
  66                         return checkBuffer;
  67                 docstring const file = makeDisplayPath(filename.absFilename(), 20);
  68                 docstring text = bformat(_(
  69                                 "The document %1$s is already loaded and has unsaved changes.\n"
  70                                 "Do you want to abandon your changes and reload the version on disk?"), file);
  71                 if (Alert::prompt(_("Reload saved document?"),
  72                                 text, 0, 1,  _("&Reload"), _("&Keep Changes")))
  73                         return checkBuffer;
  74
  75                 // FIXME: should be LFUN_REVERT
  76                 theBufferList().release(checkBuffer);
  77                 // Load it again.
  78                 return checkAndLoadLyXFile(filename);
  79         }
  80
  81         if (filename.exists()) {
  82                 if (!filename.isReadableFile()) {
  83                         docstring text = bformat(_("The file %1$s exists but is not "
  84                                 "readable by the current user."),
  85                                 from_utf8(filename.absFilename()));
  86                         Alert::error(_("File not readable!"), text);
  87                         return 0;
  88                 }
  89                 Buffer * b = theBufferList().newBuffer(filename.absFilename());
  90                 if (!b) {
  91                         // Buffer creation is not possible.
  92                         return 0;
  93                 }
  94                 if (!b->loadLyXFile(filename)) {
  95                         theBufferList().release(b);
  96                         return 0;
  97                 }
  98                 return b;
  99         }
 100
 101         docstring text = bformat(_("The document %1$s does not yet "
 102                 "exist.\n\nDo you want to create a new document?"),
 103                 from_utf8(filename.absFilename()));
 104         if (!Alert::prompt(_("Create new document?"),
 105                         text, 0, 1, _("&Create"), _("Cancel")))
 106                 return newFile(filename.absFilename(), string(), true);
 107
 108         return 0;
 109 }
 110
 111
 112 // FIXME newFile() should probably be a member method of Application...
 113 Buffer * newFile(string const & filename, string const & templatename,
 114                  bool const isNamed)
 115 {
 116         // get a free buffer
 117         Buffer * b = theBufferList().newBuffer(filename);
 118         if (!b)
 119                 // Buffer creation is not possible.
 120                 return 0;
 121
 122         FileName tname;
 123         // use defaults.lyx as a default template if it exists.
 124         if (templatename.empty())
 125                 tname = libFileSearch("templates", "defaults.lyx");
 126         else
 127                 tname = makeAbsPath(templatename);
 128
 129         if (!tname.empty()) {
 130                 if (!b->readFile(tname)) {
 131                         docstring const file = makeDisplayPath(tname.absFilename(), 50);
 132                         docstring const text  = bformat(
 133                                 _("The specified document template\n%1$s\ncould not be read."),
 134                                 file);
 135                         Alert::error(_("Could not read template"), text);
 136                         theBufferList().release(b);
 137                         return 0;
 138                 }
 139         }
 140
 141         if (!isNamed) {
 142                 b->setUnnamed();
 143                 b->setFileName(filename);
 144         }
 145
 146         b->setReadonly(false);
 147         b->setFullyLoaded(true);
 148
 149         return b;
 150 }
 151
 152
 153 Buffer * newUnnamedFile(string const & templatename, FileName const & path)
 154 {
 155         static int newfile_number;
 156
 157         FileName filename(path,
 158                 "newfile" + convert<string>(++newfile_number) + ".lyx");
 159         while (theBufferList().exists(filename)
 160                 || filename.isReadableFile()) {
 161                 ++newfile_number;
 162                 filename.set(path,
 163                         "newfile" +     convert<string>(newfile_number) + ".lyx");
 164         }
 165         return newFile(filename.absFilename(), templatename, false);
 166 }
 167
 168
 169 int countWords(DocIterator const & from, DocIterator const & to)
 170 {
 171         int count = 0;
 172         bool inword = false;
 173         for (DocIterator dit = from ; dit != to ; dit.forwardPos()) {
 174                 // Copied and adapted from isLetter() in ControlSpellChecker
 175                 if (dit.inTexted()
 176                     && dit.pos() != dit.lastpos()
 177                     && dit.paragraph().isLetter(dit.pos())
 178                     && !dit.paragraph().isDeleted(dit.pos())) {
 179                         if (!inword) {
 180                                 ++count;
 181                                 inword = true;
 182                         }
 183                 } else if (inword)
 184                         inword = false;
 185         }
 186
 187         return count;
 188 }
 189
 190
 191 int countChars(DocIterator const & from, DocIterator const & to, bool with_blanks)
 192 {
 193         int chars = 0;
 194         int blanks = 0;
 195         for (DocIterator dit = from ; dit != to ; dit.forwardPos()) {
 196
 197                 if (!dit.inTexted()) continue;
 198                 Paragraph const & par = dit.paragraph();
 199                 pos_type const pos = dit.pos();
 200
 201                 if (pos != dit.lastpos() && !par.isDeleted(pos)) {
 202                         if (Inset const * ins = par.getInset(pos)) {
 203                                 if (ins->isLetter())
 204                                         ++chars;
 205                                 else if (with_blanks && ins->isSpace())
 206                                         ++blanks;
 207                         } else {
 208                                 char_type const c = par.getChar(pos);
 209                                 if (isPrintableNonspace(c))
 210                                         ++chars;
 211                                 else if (isSpace(c) && with_blanks)
 212                                         ++blanks;
 213                         }
 214                 }
 215         }
 216
 217         return chars + blanks;
 218 }
 219
 220 } // namespace lyx